CN114079552B - Method, device, terminal and equipment for generating random access leader sequence - Google Patents

Method, device, terminal and equipment for generating random access leader sequence Download PDF

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CN114079552B
CN114079552B CN202010830768.7A CN202010830768A CN114079552B CN 114079552 B CN114079552 B CN 114079552B CN 202010830768 A CN202010830768 A CN 202010830768A CN 114079552 B CN114079552 B CN 114079552B
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sequence
preamble
pseudo
initial value
random
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CN114079552A (en
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王爱玲
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use 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
    • H04L5/0078—Timing of allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

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Abstract

本发明的实施例提供一种随机接入前导序列的生成方法、装置、终端及设备，随机接入前导序列的生成方法包括：根据前导码的索引，确定用于生成前导序列的伪随机序列初始值；根据所述初始值以及伪随机序列生成方式，生成前导序列。本发明的方案可以提升前导序列的检测性能。

Figure 202010830768

Embodiments of the present invention provide a method, device, terminal, and device for generating a random access preamble. The method for generating a random access preamble includes: determining the initial pseudo-random sequence used to generate the preamble according to the index of the preamble value; generate a leading sequence according to the initial value and the pseudo-random sequence generation method. The solution of the present invention can improve the detection performance of the preamble.

Figure 202010830768

Description

Method, device, terminal and equipment for generating random access leader sequence
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a terminal, and a device for generating a random access preamble sequence.
Background
The satellite and the ground communication are fused to form a sea, land, air, space and ground integrated three-dimensional network, so that seamless coverage of the global network can be realized. However, the high propagation delay and the large doppler shift due to the high orbit position of the satellite and the fast moving speed of the non-geosynchronous satellite bring great challenges to the uplink synchronization of the random access process between the terminal and the base station and the design of the timer.
In the existing 4-step random access process, a terminal sends an uplink signal containing a leader sequence on a physical random access channel for a base station to perform timing advance estimation, wherein uplink TA compensation when the terminal sends a leader is zero, and the base station does not need to perform TA compensation when receiving and detecting the leader sequence.
Two enhancement schemes are discussed in non-ground network research, one scheme is that a terminal automatically acquires a TA value according to the position of a user and ephemeris information, and all TA is compensated when a preamble sequence is sent or a base station compensates a public TA based on a ground reference position when a base station detects preamble; the other is that the terminal compensates a public TA based on a ground reference position, the base station side indicates the terminal to perform terminal-specific TA adjustment in the random access response, and the TA indication range in the RAR needs to be expanded. In addition, for the downlink frequency compensation, the public frequency offset pre-compensation dedicated to the wave beam is carried out on the network side. For uplink frequency compensation, common frequency offset dedicated for wave beams is compensated at the network side.
In a non-terrestrial network solution of satellite communication and 5G convergence, a bent pipe mode is mainly considered, the implementation complexity is simpler than that of an on-satellite regeneration mode, and in order to further simplify the design scheme and speed up the standardization process, it is assumed that all UEs have GNSS positioning capability. Although partial frequency offset pre-compensation can be performed on the network side or the terminal side based on ephemeris and user location information, synchronous access is still a difficult problem to be solved for a large number of low-grade internet-of-things terminals without positioning (or without time-frequency offset pre-compensation) capability.
The 6G-oriented satellite-ground fusion application scene is wider, and no matter whether the user terminal with the GNSS positioning capability exists, the user terminal needs to be considered in a research range, so that a time-frequency synchronization enhancement scheme under the condition that the user does not have the positioning capability or can not ensure the positioning precision, namely the random access process does not carry out TA compensation or frequency offset compensation, and the time-frequency synchronization enhancement scheme comprises the design of a preamble sequence enhancement scheme and the like.
Disclosure of Invention
The invention provides a method, a device, a terminal and equipment for generating a random access leader sequence. The detection performance of the leader sequence can be improved.
To solve the above technical problem, an embodiment of the present invention provides the following solutions:
a method for generating a random access preamble sequence is applied to a terminal, and the method comprises the following steps:
determining a pseudo-random sequence initial value for generating a preamble sequence according to the index of the preamble;
and generating a leader sequence according to the initial value and the pseudo-random sequence generation mode.
Optionally, determining a pseudo random sequence initial value for generating the preamble according to the index of the preamble includes:
selecting an index of the preamble;
and determining a pseudo-random sequence initial value for generating the preamble according to the index of the selected preamble.
Optionally, selecting an index of the preamble includes:
the index of the preamble is selected based on the size of the packet and/or the path loss at random access.
Optionally, determining a pseudo random sequence initial value for generating a preamble according to the index of the selected preamble includes:
according to the formula:
Figure BDA0002637884420000021
generating a pseudo-random sequence initial value of the lead code;
wherein, C init Is the initial value of the pseudo-random sequence of the preamble,
Figure BDA0002637884420000022
is the number of time slots in a radio frame, is greater or less>
Figure BDA0002637884420000023
Is the number of symbols in a time slot, is combined>
Figure BDA0002637884420000024
A physical cell ID of the serving cell, p-ID is an index of the selected lead code, and the value range is that p is more than or equal to 0 - And id is less than or equal to P, P is the number of available lead codes on each time-frequency resource information, and offset is a cyclic shift offset value.
Optionally, the number of slots in the radio frame, the number of symbols in a slot, the physical cell ID of the serving cell, the number of preambles available on each time-frequency resource information, and the cyclic shift offset value are configured through a system message or according to a protocol convention.
Optionally, generating a preamble sequence according to the initial value and a pseudo random sequence generation manner includes:
and generating a leader sequence according to the initial value and the m sequence generation mode.
Optionally, according to the formula:
Figure BDA0002637884420000031
generating a leader sequence;
wherein c (n) is generated according to the following formula:
c(n)＝(x 1 (n+N C )+x 2 (n+N C ))mod2
x 1 (n+31)＝(x 1 (n+3)+x 1 (n))mod2
x 2 (n+31)＝(x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n))mod2
wherein n =0,1 PN -1，M PN Is the sequence length, N c ＝1600，x 1 (n) has an initial value of x 1 (0)＝1,x 1 (n)＝0,n＝1,2,...,30，x 2 The value of (n) is represented by C init And (4) determining.
Optionally, the method for generating a random access preamble sequence further includes:
and transmitting the leader sequence.
The embodiment of the invention also provides a method for receiving the random access leader sequence, which is applied to network side equipment and comprises the following steps:
sending random access configuration information to a terminal;
receiving a leader sequence generated and sent by a terminal, wherein the leader sequence is a pseudo-random sequence initial value used for generating the leader sequence according to the index of a lead code; and generating according to the initial value and a pseudo-random sequence generation mode.
Optionally, the configuration information includes at least one of:
system parameter information;
one or more time-frequency resource configuration information for random access transmission;
the number of available preamble sequences P per time-frequency resource information.
The embodiment of the invention also provides a device for generating the random access preamble sequence, which is applied to a terminal, and the device comprises:
the processing module is used for determining a pseudo-random sequence initial value for generating a preamble sequence according to the index of the preamble; and generating a leader sequence according to the initial value and the pseudo-random sequence generation mode.
An embodiment of the present invention further provides a terminal, including:
a processor, configured to determine a pseudo-random sequence initial value for generating a preamble sequence according to an index of the preamble; and generating a leader sequence according to the initial value and the pseudo-random sequence generation mode.
The embodiment of the present invention further provides a receiving apparatus for random access preamble sequence, which is applied to a network side device, and the apparatus includes:
the receiving and sending module is used for sending random access configuration information to the terminal; receiving a leader sequence generated and sent by a terminal, wherein the leader sequence is a pseudo-random sequence initial value used for generating the leader sequence according to the index of a lead code; and generating according to the initial value and a pseudo-random sequence generation mode.
An embodiment of the present invention further provides a network side device, including:
a transceiver for transmitting random access configuration information to a terminal; receiving a leader sequence generated and sent by a terminal, wherein the leader sequence is a pseudo-random sequence initial value used for generating the leader sequence according to the index of a lead code; and generating according to the initial value and a pseudo-random sequence generation mode.
An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above.
Embodiments of the present invention also provide a computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method as described above.
The scheme of the invention at least comprises the following beneficial effects:
in the above scheme of the present invention, the method for generating the random access preamble sequence includes: determining a pseudo-random sequence initial value for generating a preamble sequence according to the index of the preamble; and generating a leader sequence according to the initial value and the pseudo-random sequence generation mode. The method has good balance and shift addition characteristics, the correlation peak value does not shift along with the frequency offset, the amplitude of the correlation peak value can be inhibited under the frequency offset in the detection process, the robustness to frequency uncertainty is good, the preamble sequence detection performance can be improved, and the system frequency offset estimation and synchronization process can be completed.
Drawings
Fig. 1 is a flowchart illustrating a method for generating a random access preamble sequence according to an embodiment of the present invention;
fig. 2 is a flow chart illustrating a method for receiving a random access preamble sequence according to an embodiment of the present invention;
fig. 3 is a block diagram of an apparatus for generating a random access preamble sequence according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides a method for generating a random access preamble sequence, which is applied to a terminal, and the method includes:
step 11, determining a pseudo-random sequence initial value for generating a preamble sequence according to the index of the preamble; the preamble in the embodiments of the present invention may also be referred to as a preamble sequence, and the english name may be a preamble or a preamble sequence.
And step 12, generating a leader sequence according to the initial value and the pseudo-random sequence generation mode.
In this embodiment, the terminal receives random access configuration information sent by the network side, including but not limited to: system parameter information, one or more time frequency resources used for random access transmission, preamble sequence number P available or contained in each time frequency resource information, and the like. The specific leader sequence can be a random access leader sequence generated based on an m sequence, the determination of the initial value of the leader sequence at least comprises a leader sequence index, namely a preamble index, so that the random access leader sequence has good balance and shift addition characteristics, the correlation peak value does not deviate along with the frequency offset, the amplitude of the correlation peak value can be inhibited under the frequency offset in the detection process, the robustness to the frequency uncertainty is good, the detection performance of the leader sequence can be improved, and the system frequency offset estimation and synchronization process can be completed.
In an alternative embodiment of the present invention, step 11 may include:
step 111, selecting an index of the lead code;
here, the index of the preamble may be selected according to the size of the packet and/or the path loss at the time of random access.
And 112, determining a pseudo-random sequence initial value for generating the preamble according to the index of the selected preamble.
Here, the following equation may be used:
Figure BDA0002637884420000051
generating a pseudo-random sequence initial value of the lead code;
wherein, C init Is the initial value of the pseudo-random sequence of the preamble,
Figure BDA0002637884420000052
is the number of time slots in a radio frame, is greater or less>
Figure BDA0002637884420000053
Is the number of symbols in a time slot, is greater than or equal to>
Figure BDA0002637884420000054
Is the physical cell ID, p, of the serving cell - id is the index of the selected lead code, and the value range is that p is more than or equal to 0 - And id is less than or equal to P, P is the number of the available lead codes on each time-frequency resource information, and offset is a cyclic shift offset value.
In the above embodiments of the present invention, the number of slots in one radio frame, the number of symbols in one slot, the physical cell ID of the serving cell, the number of available preambles on each time-frequency resource information, and the cyclic shift offset value are configured through a system message or agreed according to a protocol.
In an alternative embodiment of the present invention, step 12 may include:
and step 121, generating a leader sequence according to the initial value and the m sequence generation mode.
Here, the following may be expressed according to the formula:
Figure BDA0002637884420000061
generating a leader sequence;
wherein c (n) is generated according to the following formula:
c(n)＝(x 1 (n+N C )+x 2 (n+N C ))mod2
x 1 (n+31)＝(x 1 (n+3)+x 1 (n))mod2
x 2 (n+31)＝(x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n))mod2
wherein n =0,1 PN -1，M PN Is the sequence length, N c ＝1600，x 1 (n) has an initial value of x 1 (0)＝1,x 1 (n)＝0,n＝1,2,...,30，x 2 The value of (n) is represented by C init And (4) determining.
In an optional embodiment of the present invention, the method for generating a random access preamble sequence may further include:
and step 13, sending the leader sequence.
In the above embodiment of the present invention, the random access preamble sequence is generated based on the m sequence, where the determination of the initial value of the preamble sequence at least includes a preamble index, that is, a preamble index, specifically, the terminal receives the random access configuration information sent by the network side, which includes but is not limited to: the system parameter information is used for randomly accessing one or more time-frequency resource occasions sent, and preamble numbers P and the like available or contained on each time-frequency resource information. The terminal determines the parameter information of the pre-defined leader sequence initial value according to the protocol, or the terminal receives the parameter information of the leader sequence initial value sent by the base station through broadcast information or system information.
The terminal selects a preamble sequence sent on a Physical Random Access Channel (PRACH) according to the size of a data packet during access, the path loss, and the like, and calculates an initial value of the preamble sequence according to the selected preamble sequence index and related parameter information, namely, the initial value of the generated preamble sequence is determined by the preamble sequence index.
And the terminal generates a corresponding leader sequence by using the leader sequence initial value and an m sequence generation formula.
And the network side generates P available leader sequences on each time-frequency resource information according to the leader sequence index, the leader sequence related parameter information and the cyclic shift and groups the P available leader sequences. The selection of the cyclic shift can multiplex the generation mode of the cyclic shift of NR.
In the embodiment of the invention, under the condition of no time-frequency offset pre-compensation, the random access process is enhanced, namely, the pseudo-m sequence is used for generating the leader sequence, the leader sequence has good balance and shift addition characteristics, the correlation peak value does not shift along with the frequency offset, the amplitude of the correlation peak value can be inhibited under the frequency offset in the detection process, the robustness to the frequency uncertainty is good, the detection performance of the leader sequence can be improved, and the system frequency offset estimation and synchronization process can be completed.
As shown in fig. 2, an embodiment of the present invention further provides a method for receiving a random access preamble sequence, where the method is applied to a network device, and the method includes:
step 21, sending random access configuration information to the terminal;
step 22, receiving a preamble sequence generated and sent by a terminal, wherein the preamble sequence is a pseudo random sequence initial value for generating the preamble sequence determined according to an index of a preamble; and generating according to the initial value and a pseudo-random sequence generation mode.
Optionally, the configuration information includes at least one of:
system parameter information;
one or more time-frequency resource configuration information for random access transmission;
the available preamble sequence number P on each time-frequency resource information.
It should be noted that this method is a method corresponding to the terminal-side method described above, and all implementation manners in the method embodiments described above are applicable to the method embodiments, and the same technical effects can be achieved.
As shown in fig. 3, an embodiment of the present invention further provides an apparatus 30 for generating a random access preamble sequence, which is applied to a terminal, where the apparatus 30 includes:
a processing module 31, configured to determine, according to the index of the preamble, a pseudo-random sequence initial value for generating a preamble sequence; and generating a leader sequence according to the initial value and the pseudo-random sequence generation mode.
Optionally, determining a pseudo random sequence initial value for generating the preamble according to the index of the preamble includes:
selecting an index of the preamble;
and determining a pseudo-random sequence initial value for generating the preamble according to the index of the selected preamble.
Optionally, selecting an index of the preamble includes:
the index of the preamble is selected based on the size of the packet and/or the path loss at random access.
Optionally, determining a pseudo random sequence initial value for generating a preamble according to the index of the selected preamble includes:
according to the formula:
Figure BDA0002637884420000081
generating a pseudo-random sequence initial value of the lead code;
wherein, C init Is the initial value of the pseudo-random sequence of the preamble,
Figure BDA0002637884420000082
is the number of time slots in a radio frame, is greater or less>
Figure BDA0002637884420000083
Is the number of symbols in a time slot, is greater than or equal to>
Figure BDA0002637884420000084
Is the physical cell ID, p, of the serving cell - id is the index of the selected lead code, and the value range is that p is more than or equal to 0 - And id is less than or equal to P, P is the number of the available lead codes on each time-frequency resource information, and offset is a cyclic shift offset value.
Optionally, the number of slots in the radio frame, the number of symbols in a slot, the physical cell ID of the serving cell, the number of preambles available on each time-frequency resource information, and the cyclic shift offset value are configured through a system message or agreed according to a protocol.
Optionally, generating a preamble sequence according to the initial value and a pseudo random sequence generation manner includes:
and generating a leader sequence according to the initial value and the m sequence generation mode.
Optionally, according to the formula:
Figure BDA0002637884420000085
generating a leader sequence;
wherein c (n) is generated according to the following formula:
c(n)＝(x 1 (n+N C )+x 2 (n+N C ))mod2
x 1 (n+31)＝(x 1 (n+3)+x 1 (n))mod2
x 2 (n+31)＝(x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n))mod2
wherein n =0,1 PN -1，M PN Is the sequence length, N c ＝1600，x 1 (n) has an initial value of x 1 (0)＝1,x 1 (n)＝0,n＝1,2,...,30，x 2 The value of (n) is represented by C init And (5) determining.
Optionally, the apparatus for generating a random access preamble sequence further includes:
a transceiver module 32, configured to transmit the preamble sequence.
It should be noted that this apparatus is an apparatus corresponding to the above terminal-side method, and all the implementations in the above method embodiments are applicable to this apparatus embodiment, and the same technical effects can be achieved.
An embodiment of the present invention further provides a terminal, including:
a processor, configured to determine a pseudo-random sequence initial value for generating a preamble sequence according to an index of the preamble; and generating a leader sequence according to the initial value and the pseudo-random sequence generation mode.
Optionally, determining a pseudo random sequence initial value for generating the preamble according to the index of the preamble includes:
selecting an index of the preamble;
and determining a pseudo-random sequence initial value for generating the preamble according to the index of the selected preamble.
Optionally, selecting an index of the preamble includes:
the index of the preamble is selected based on the size of the packet and/or the path loss at random access.
Optionally, determining a pseudo random sequence initial value for generating a preamble according to the index of the selected preamble includes:
according to the formula:
Figure BDA0002637884420000091
generating a pseudo-random sequence initial value of the lead code;
wherein, C init Is the initial value of the pseudo-random sequence of the preamble,
Figure BDA0002637884420000092
is the number of time slots in a radio frame, is greater or less>
Figure BDA0002637884420000093
Is the number of symbols in a time slot, is greater than or equal to>
Figure BDA0002637884420000094
Is the physical cell ID, p, of the serving cell - id is the index of the selected lead code, and the value range is that p is more than or equal to 0 - And id is less than or equal to P, P is the number of the available lead codes on each time-frequency resource information, and offset is a cyclic shift offset value.
Optionally, the number of slots in the radio frame, the number of symbols in a slot, the physical cell ID of the serving cell, the number of preambles available on each time-frequency resource information, and the cyclic shift offset value are configured through a system message or agreed according to a protocol.
Optionally, generating a preamble sequence according to the initial value and a pseudo random sequence generation manner includes:
and generating a leader sequence according to the initial value and the m sequence generation mode.
Optionally, according to the formula:
Figure BDA0002637884420000095
generating a leader sequence;
wherein c (n) is generated according to the following formula:
c(n)＝(x 1 (n+N C )+x 2 (n+N C ))mod2
x 1 (n+31)＝(x 1 (n+3)+x 1 (n))mod2
x 2 (n+31)＝(x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n))mod2
wherein n =0,1 PN -1，M PN Is the sequence length, N c ＝1600，x 1 (n) has an initial value of x 1 (0)＝1,x 1 (n)＝0,n＝1,2,...,30，x 2 The value of (n) is represented by C init And (5) determining.
Optionally, the terminal further includes: a transceiver for transmitting the preamble sequence.
It should be noted that the terminal is a terminal corresponding to the method, and all implementation manners in the method embodiment are applicable to the embodiment of the terminal, and the same technical effect can be achieved.
The embodiment of the present invention further provides a receiving apparatus for random access preamble sequence, which is applied to a network side device, and the apparatus includes:
the receiving and sending module is used for sending random access configuration information to the terminal; receiving a leader sequence generated and sent by a terminal, wherein the leader sequence is a pseudo-random sequence initial value used for generating the leader sequence according to the index of a lead code; and generating according to the initial value and a pseudo-random sequence generation mode.
Optionally, the configuration information includes at least one of:
system parameter information;
one or more time-frequency resource configuration information for random access transmission;
the number of available preamble sequences P per time-frequency resource information.
It should be noted that the apparatus is an apparatus corresponding to the method on the network device side, and all implementation manners in the method embodiments are applicable to the embodiment of the apparatus, and the same technical effect can be achieved.
An embodiment of the present invention further provides a network device, including:
a transceiver for transmitting random access configuration information to a terminal; receiving a leader sequence generated and sent by a terminal, wherein the leader sequence is a pseudo-random sequence initial value used for generating the leader sequence according to the index of a lead code; and generating according to the initial value and a pseudo-random sequence generation mode.
Optionally, the configuration information includes at least one of:
system parameter information;
one or more time-frequency resource configuration information for random access transmission;
the available preamble sequence number P on each time-frequency resource information.
It should be noted that the network device is a device corresponding to the method of the network device side, and all implementation manners in the method embodiment are applicable to the embodiment of the device, and the same technical effect can be achieved.
An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above. All the implementation manners in the above method embodiment are applicable to the embodiment of the apparatus, and the same technical effect can be achieved.
Embodiments of the present invention also provide a computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method as described above. All the implementation manners in the above method embodiment are applicable to the embodiment of the apparatus, and the same technical effect can be achieved.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
Furthermore, it should be noted that in the apparatus and method of the present invention, it is obvious that each component or each step may be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.
Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (15)

1.一种随机接入前导序列的生成方法，其特征在于，应用于终端，所述方法包括：1. A method for generating a random access preamble sequence, characterized in that it is applied to a terminal, the method comprising: 根据前导码的索引，确定用于生成前导序列的伪随机序列初始值；Determine the initial value of the pseudo-random sequence used to generate the preamble sequence based on the index of the preamble. 根据所述初始值以及伪随机序列生成方式，生成前导序列；Based on the initial values and the pseudo-random sequence generation method, a leader sequence is generated; 所述根据所述初始值以及伪随机序列生成方式，生成前导序列，包括：The step of generating a leader sequence based on the initial value and the pseudo-random sequence generation method includes: 根据所述初始值以及m序列生成方式，生成前导序列。Based on the initial value and the m-sequence generation method, a leader sequence is generated. 2.根据权利要求1所述的随机接入前导序列的生成方法，其特征在于，根据前导码的索引，确定用于生成前导码的伪随机序列初始值，包括：2. The method for generating a random access preamble sequence according to claim 1, characterized in that, determining the initial value of the pseudo-random sequence used to generate the preamble based on the index of the preamble includes: 选择前导码的索引；Choose the index of the preamble; 根据选择的前导码的索引，确定用于生成前导码的伪随机序列初始值。The initial value of the pseudo-random sequence used to generate the preamble is determined based on the index of the selected preamble. 3.根据权利要求2所述的随机接入前导序列的生成方法，其特征在于，选择前导码的索引，包括：3. The method for generating a random access preamble sequence according to claim 2, characterized in that selecting the index of the preamble includes: 根据随机接入时数据包的大小和/或路径损耗，选择前导码的索引。The index of the preamble is selected based on the size of the data packet and/or path loss during random access. 4.根据权利要求2所述的随机接入前导序列的生成方法，其特征在于，根据选择的前导码的索引，确定用于生成前导码的伪随机序列初始值，包括：4. The method for generating a random access preamble sequence according to claim 2, characterized in that, determining the initial value of the pseudo-random sequence used to generate the preamble based on the index of the selected preamble includes: 根据公式：
Figure FDA0003922741490000011
生成前导码的伪随机序列初始值；According to the formula:
Figure FDA0003922741490000011
Generate the initial value of the pseudo-random sequence for the preamble; 其中，Cinit为前导码的伪随机序列初始值，
Figure FDA0003922741490000012
为一个无线帧中的时隙数，
Figure FDA0003922741490000013
为一个时隙中的符号数，
Figure FDA0003922741490000014
为服务小区的物理小区ID，p_id为选择的前导码的索引，取值范围是0≤p_id≤P，P是每个时频资源信息上可用的前导码的数量，offset为循环移位偏移值。Where C <sub>init</sub> is the initial value of the pseudo-random sequence of the preamble.
Figure FDA0003922741490000012
The number of time slots in a radio frame.
Figure FDA0003922741490000013
The number of symbols in a time slot.
Figure FDA0003922741490000014
The physical cell ID of the serving cell is p_id, which is the index of the selected preamble. The value range is 0≤p_id≤P, where P is the number of preambles available on each time-frequency resource information, and offset is the cyclic shift offset value. 5.根据权利要求4所述的随机接入前导序列的生成方法，其特征在于，所述一个无线帧中的时隙数、一个时隙中的符号数、服务小区的物理小区ID、每个时频资源信息上可用的前导码的数量、循环移位偏移值是通过系统消息配置的或者根据协议约定的。5. The method for generating a random access preamble sequence according to claim 4, wherein the number of time slots in a radio frame, the number of symbols in a time slot, the physical cell ID of the serving cell, the number of preambles available on each time-frequency resource information, and the cyclic shift offset value are configured through system messages or agreed upon according to a protocol. 6.根据权利要求4所述的随机接入前导序列的生成方法，其特征在于，6. The method for generating a random access preamble sequence according to claim 4, characterized in that, 根据公式：
Figure FDA0003922741490000021
生成前导序列；According to the formula:
Figure FDA0003922741490000021
Generate a leader sequence; 其中c(n)根据以下公式生成：Where c(n) is generated according to the following formula: c(n)＝(x1(n+NC)+x2(n+NC))mod2c(n)＝(x 1 (n+ NC )+x 2 (n+ NC ))mod2 x1(n+31)＝(x1(n+3)+x1(n))mod2x 1 (n+31)=(x 1 (n+3)+x 1 (n))mod2 x2(n+31)＝(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod2x 2 (n+31)＝(x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n))mod2 其中，n＝0,1,...,MPN-1，MPN为序列长度，Nc＝1600，x1(n)的初始值为x1(0)＝1,x1(n)＝0,n＝1,2,...,30，x2(n)的值由Cinit确定。Where n = 0, 1, ..., M PN - 1, M PN is the sequence length, N c = 1600, the initial values of x 1 (n) are x 1 (0) = 1, x 1 (n) = 0, n = 1, 2, ..., 30, and the value of x 2 (n) is determined by C init . 7.根据权利要求1所述的随机接入前导序列的生成方法，其特征在于，还包括：7. The method for generating a random access preamble sequence according to claim 1, characterized in that it further comprises: 发送所述前导序列。Send the preamble sequence. 8.一种随机接入前导序列的接收方法，其特征在于，应用于网络侧设备，所述方法包括：8. A method for receiving a random access preamble sequence, characterized in that it is applied to a network-side device, the method comprising: 向终端发送随机接入配置信息；Send random access configuration information to the terminal; 接收终端生成并发送的前导序列，所述前导序列是根据前导码的索引，确定用于生成前导序列的伪随机序列初始值；并根据所述初始值以及伪随机序列生成方式生成的；所述伪随机序列生成方式为m序列生成方式。The receiving terminal generates and sends a preamble sequence, wherein the preamble sequence is generated based on the index of the preamble code, the initial value of the pseudo-random sequence used to generate the preamble sequence is determined, and the preamble sequence is generated based on the initial value and the pseudo-random sequence generation method, wherein the pseudo-random sequence generation method is the m-sequence generation method. 9.根据权利要求8所述的随机接入前导序列的接收方法，其特征在于，所述配置信息包括以下至少一项：9. The method for receiving a random access preamble sequence according to claim 8, wherein the configuration information includes at least one of the following: 系统参数信息；System parameter information; 用于随机接入发送的一个或多个时频资源配置信息；One or more time-frequency resource configuration information used for random access transmission; 每个时频资源信息上可用的前导序列数P。The number of preamble sequences P available for each time-frequency resource information. 10.一种随机接入前导序列的生成装置，其特征在于，应用于终端，所述装置包括：10. A device for generating a random access preamble sequence, characterized in that it is applied to a terminal, the device comprising: 处理模块，用于根据前导码的索引，确定用于生成前导序列的伪随机序列初始值；根据所述初始值以及伪随机序列生成方式，生成前导序列；The processing module is used to determine the initial value of the pseudo-random sequence used to generate the preamble sequence based on the index of the preamble; and to generate the preamble sequence based on the initial value and the pseudo-random sequence generation method. 所述根据所述初始值以及伪随机序列生成方式，生成前导序列，包括：The step of generating a leader sequence based on the initial value and the pseudo-random sequence generation method includes: 根据所述初始值以及m序列生成方式，生成前导序列。Based on the initial value and the m-sequence generation method, a leader sequence is generated. 11.一种终端，其特征在于，包括：11. A terminal, characterized in that it comprises: 处理器，用于根据前导码的索引，确定用于生成前导序列的伪随机序列初始值；根据所述初始值以及伪随机序列生成方式，生成前导序列；The processor is configured to determine an initial value for a pseudo-random sequence used to generate a preamble sequence based on the index of the preamble; and to generate a preamble sequence based on the initial value and the pseudo-random sequence generation method. 所述根据所述初始值以及伪随机序列生成方式，生成前导序列，包括：The step of generating a leader sequence based on the initial value and the pseudo-random sequence generation method includes: 根据所述初始值以及m序列生成方式，生成前导序列。。Based on the initial values and the m-sequence generation method, a leader sequence is generated. 12.一种随机接入前导序列的接收装置，其特征在于，应用于网络侧设备，所述装置包括：12. A receiving device for a random access preamble sequence, characterized in that it is applied to a network-side device, the device comprising: 收发模块，用于向终端发送随机接入配置信息；接收终端生成并发送的前导序列，所述前导序列是根据前导码的索引，确定用于生成前导序列的伪随机序列初始值；并根据所述初始值以及伪随机序列生成方式生成的；所述伪随机序列生成方式为m序列生成方式。The transceiver module is used to send random access configuration information to the terminal; receive a preamble sequence generated and sent by the terminal, wherein the preamble sequence is generated by determining the initial value of the pseudo-random sequence used to generate the preamble sequence based on the index of the preamble code; and generate the pseudo-random sequence based on the initial value and the pseudo-random sequence generation method; wherein the pseudo-random sequence generation method is an m-sequence generation method. 13.一种网络侧设备，其特征在于，包括：13. A network-side device, characterized in that it comprises: 收发机，用于向终端发送随机接入配置信息；接收终端生成并发送的前导序列，所述前导序列是根据前导码的索引，确定用于生成前导序列的伪随机序列初始值；并根据所述初始值以及伪随机序列生成方式生成的；所述伪随机序列生成方式为m序列生成方式。A transceiver is used to send random access configuration information to a terminal; receive a preamble sequence generated and sent by the terminal, wherein the preamble sequence is generated by determining the initial value of a pseudo-random sequence used to generate the preamble sequence based on the index of the preamble code; and generate the pseudo-random sequence based on the initial value and the pseudo-random sequence generation method; wherein the pseudo-random sequence generation method is an m-sequence generation method. 14.一种通信设备，其特征在于，包括：处理器、存储有计算机程序的存储器，所述计算机程序被处理器运行时，执行如权利要求1至7任一项所述的方法或者如权利要求8至9任一项所述的方法。14. A communication device, characterized in that it comprises: a processor and a memory storing a computer program, wherein the computer program, when executed by the processor, performs the method as described in any one of claims 1 to 7 or the method as described in any one of claims 8 to 9. 15.一种计算机可读存储介质，其特征在于，包括指令，当所述指令在计算机上运行时，使得计算机执行如权利要求1至7任一项所述的方法或者如权利要求8至9任一项所述的方法。15. A computer-readable storage medium, characterized in that it includes instructions that, when executed on a computer, cause the computer to perform the method as claimed in any one of claims 1 to 7 or the method as claimed in any one of claims 8 to 9.
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