WO2018121376A1 - 一种随机接入方法、发送端及接收端 - Google Patents

一种随机接入方法、发送端及接收端 Download PDF

Info

Publication number
WO2018121376A1
WO2018121376A1 PCT/CN2017/117466 CN2017117466W WO2018121376A1 WO 2018121376 A1 WO2018121376 A1 WO 2018121376A1 CN 2017117466 W CN2017117466 W CN 2017117466W WO 2018121376 A1 WO2018121376 A1 WO 2018121376A1
Authority
WO
WIPO (PCT)
Prior art keywords
sequence
additional information
offset
transmitting end
prach
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/117466
Other languages
English (en)
French (fr)
Inventor
沈晓冬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vivo Mobile Communication Co Ltd
Original Assignee
Vivo Mobile Communication Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vivo Mobile Communication Co Ltd filed Critical Vivo Mobile Communication Co Ltd
Publication of WO2018121376A1 publication Critical patent/WO2018121376A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • 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
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • 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
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a random access method, a transmitting end, and a receiving end.
  • the physical random access channel (PRACH) designed by the physical layer of the fourth-generation mobile communication technology in the related art is mainly used for the terminal side to initiate an uplink random access request, so that The base station side further determines the subsequent response according to its request.
  • the main four steps of the random access procedure in the related art are as follows: Step 1: Preamble (ie, PRACH sequence) transmission; Step 2: Random access response; Step 3: Layer 2/Layer 3 message; Step 4: Contention resolution Message.
  • step 1 the sequence generated by the preamble code of the physical layer is mapped to the time-frequency resource of the physical layer, and the LTE currently hosts five formats, wherein the format 4 is equivalent to one of LTE. Symbol length.
  • the ZC (Zaddoff Chu) sequence used by LTE is as follows:
  • N ZC is the sequence length
  • n is the nth sample point of the sequence.
  • the maximum number of PRACH sequences that a UE can use in a cell is 64.
  • the 64 different types of PRACH sequences are generated as follows:
  • SIB System Information Block
  • the cyclic shift interval is also configured by the network side.
  • the order of 64 different PRACHs is as follows.
  • PRACH preamble sequence [0] base sequence
  • PRACH preamble sequence [1] base sequence for 1 ⁇ 26 sample points cyclic shift
  • PRACH preamble sequence [2] base sequence for 2 ⁇ 26 sample points cyclic shift
  • PRACH preamble sequence [31] base sequence for 31 ⁇ 26 sample points cyclic shift
  • PRACH preamble sequence [32] base sequence for 1 sample point cyclic shift
  • PRACH preamble sequence [33] base sequence for 1+1 ⁇ 26 sample points cyclic shift
  • PRACH preamble sequence [34] base sequence for 1 + 2 ⁇ 26 sample points cyclic shift
  • PRACH preamble sequence [63] base sequence for 1 + 31 ⁇ 26 sample points cyclic shift
  • the random access process of the fifth generation mobile communication technology (5G) new air interface (NR) requires carrying as much useful information as possible in the process of transmitting the PRACH sequence by the transmitting end, such as terminal identification.
  • the current PRACH sequence carries limited information and cannot carry more useful information within limited resources.
  • the embodiments of the present disclosure provide a random access method, a transmitting end, and a receiving end, to solve the problem that the information carried by the PRACH sequence is limited and cannot carry more useful information within the limited resources.
  • an embodiment of the present disclosure provides a random access method, which is applied to a sending end, and the method includes:
  • the PRACH sequence includes: a basic sequence carrying identifier information of the transmitting end; and an extended sequence carrying additional information of the transmitting end;
  • an embodiment of the present disclosure further provides a sending end, where the sending end includes:
  • An acquiring module configured to obtain a physical random access channel PRACH sequence, where the PRACH sequence includes: a basic sequence carrying identifier information of the transmitting end; and an extended sequence carrying additional information of the transmitting end;
  • a first sending module configured to send a PRACH sequence to the receiving end
  • the first receiving module is configured to receive a response message sent by the receiving end.
  • an embodiment of the present disclosure further provides a random access method, which is applied to a receiving end, where the method includes:
  • the PRACH sequence includes: a basic sequence carrying the identifier information of the transmitting end; and an extended sequence carrying additional information of the transmitting end;
  • a response message is sent to the sender.
  • an embodiment of the present disclosure further provides a receiving end, where the receiving end includes:
  • a second receiving module configured to receive a physical random access channel PRACH sequence sent by the sending end, where the PRACH sequence includes: a basic sequence carrying the identifier information of the sending end, and an extended sequence carrying additional information of the sending end;
  • the second sending module is configured to send a response message to the sending end according to the PRACH sequence.
  • an embodiment of the present disclosure further provides a transmitting end, including: a memory, a processor, and a computer program stored on the memory and operable on the processor, the processor executing the The steps in the random access method described above are implemented in a computer program.
  • an embodiment of the present disclosure further provides a receiving end, including: a memory, a processor, and a computer program stored on the memory and operable on the processor, the processor executing the The steps in the random access method described above are implemented in a computer program.
  • an embodiment of the present disclosure further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, where the computer program is executed by a processor to implement the random access method A step of.
  • an embodiment of the present disclosure further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, where the computer program is executed by a processor to implement the random access method A step of.
  • the basic sequence carrying the identification information of the transmitting end and the PRACH sequence carrying the extended sequence of the additional information of the transmitting end are sent to the receiving end in the random access process, and received by the receiving end.
  • the response message causes the PRACH sequence sent by the sender in the random access procedure to carry more useful information.
  • FIG. 1 is a flowchart of a random access method in some embodiments of the present disclosure
  • 3A is a schematic diagram of generating a PRACH sequence in some embodiments of the present disclosure.
  • 3B is a second schematic diagram of generating a PRACH sequence in some embodiments of the present disclosure.
  • 3C is a third schematic diagram of generating a PRACH sequence in some embodiments of the present disclosure.
  • 3D is a schematic diagram of transmitting a PRACH sequence in some embodiments of the present disclosure.
  • 3E is a second schematic diagram of transmitting a PRACH sequence in some embodiments of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a transmitting end in some embodiments of the present disclosure.
  • FIG. 5 is a second schematic structural diagram of a transmitting end according to some embodiments of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a terminal in some embodiments of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a network device according to some embodiments of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a receiving end in some embodiments of the present disclosure.
  • FIG. 10 is a second schematic structural diagram of a receiving end according to some embodiments of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a network device according to some embodiments of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a terminal in some embodiments of the present disclosure.
  • some embodiments of the present disclosure provide a random access method, which is applied to a transmitting end, and the method includes:
  • Step 101 Obtain a physical random access channel PRACH sequence.
  • the foregoing PRACH sequence includes: a basic sequence carrying identifier information of the sender and an extended sequence carrying additional information of the sender.
  • the additional information of the sending end may include other identifier information of the sending end, beam information of the transmitting end, and the like. It should be noted that the other identifier information in the additional information is different from the identifier information carried in the base sequence, but it can be used to identify the sender.
  • the PRACH sequence including the base sequence and the extended sequence is obtained by means of code superposition. Because the physical layer process of sharing a resource for multiple users such as random access (such as uplink random access), the code domain superposition method can fully utilize the characteristics of the system "soft capacity", and realize carrying more in limited resources. The purpose of useful information.
  • Step 102 Send the PRACH sequence to the receiving end.
  • the transmitting end sends a PRACH sequence including the foregoing basic sequence and the extended sequence to the receiving end, so that the receiving end can respond according to more useful information, that is, the identification information of the transmitting end and the additional information.
  • Step 103 Receive a response message sent by the receiving end.
  • the foregoing response message includes information for indicating whether to agree to the sender access, and the like. It should be noted that the response message may be the same as the random access response in the random access procedure of the 4G LTE, and this is common knowledge to those skilled in the art, and thus will not be described in detail herein.
  • the sending end may be a terminal, such as a smart phone, a tablet computer, or the like, or may be a network device, such as a base station, a core network control node, or the like.
  • the sending end is a terminal
  • the receiving end is a network device
  • the transmitting end is a network device
  • the receiving end is a terminal.
  • the basic sequence carrying the identification information of the transmitting end and the PRACH sequence of the extended sequence carrying the additional information of the transmitting end are received and received.
  • the response message sent by the terminal enables the PRACH sequence sent by the sender in the random access process to carry more useful information.
  • some embodiments of the present disclosure provide a random access method, which is applied to a sending end, and the method includes:
  • Step 201 Generate a base sequence according to the ZC sequence.
  • the foregoing basic sequence carries the identifier information of the sending end, so that the receiving end can distinguish different sending ends according to the basic sequence.
  • the ZC sequence described above Indicates the ZC sequence, u denotes the number of the root sequence, N ZC denotes the sequence length, n denotes the nth sample point of the sequence, j denotes an imaginary unit, and both u and N ZC are configured according to the sequence information previously delivered by the receiving end.
  • sequence information sent by the receiving end refers to various information that is used by the transmitting end to obtain the PRACH sequence, and specifically includes related parameters of the ZC sequence (such as the number of the root sequence, the length of the sequence, etc.), and the basis of the generation.
  • the sequence of the root sequence involved in the sequence and the extended sequence the number of bits of the cyclic shift, the number of subsequences included in the extended sequence, the modulation order of Quadrature Amplitude Modulation (QAM), and the correlation matrix ( For example, a K ⁇ K matrix), a plurality of ZC sequences, a plurality of weight values, and the like.
  • QAM Quadrature Amplitude Modulation
  • the correlation matrix For example, a K ⁇ K matrix
  • a plurality of ZC sequences a plurality of weight values, and the like.
  • a formula can be adopted Generate a base sequence.
  • S 1 represents a base sequence
  • ⁇ represents a first preset weight value.
  • the offset bits of the x u (n) sequence indicating the root sequence numbered u 0 are cyclically shifted, and u 0 and offset are both configured according to the sequence information. Further, ⁇ can also be configured according to the sequence information.
  • Step 202 Generate an extended sequence according to the ZC sequence.
  • the additional information of the sending end of the extended sequence is such that the receiving end can obtain additional information carried by the random access according to the extended sequence, for example, other identification information of the transmitting end and beam information of the transmitting end, so that the receiving end can access the random access. Respond.
  • the extended sequence may be generated by mapping additional information of the transmitting end to at least two ZC sequences; or, by mapping additional information of the transmitting end to one ZC sequence, the extended sequence is generated.
  • Step 203 Superimpose the extended sequence to the base sequence to generate a PRACH sequence.
  • the base sequence and the extended sequence both perform amplitude and phase adjustment by respective weight values in the process of generating the base sequence and the extended sequence, the base sequence and the extended sequence are superimposed (ie, phase The obtained PRACH sequence has better receiving performance.
  • Step 204 Send the PRACH sequence to the receiving end.
  • the PRACH sequence may be transmitted to the receiving end by means of time division multiplexing or frequency division multiplexing.
  • Step 205 Receive a response message sent by the receiving end.
  • the foregoing response message includes information for indicating whether to agree to the sender access, and the like.
  • the sending end may be a terminal, such as a smart phone, a tablet computer, or the like, or may be a network device, such as a base station, a core network control node, or the like.
  • the sending end is a terminal
  • the receiving end is a network device
  • the transmitting end is a network device
  • the receiving end is a terminal.
  • the extended sequence is generated by mapping the additional information of the transmitting end to the at least two ZC sequences, that is, the extended sequence is generated by a bitmap mapping manner, then the additional information by the transmitting end is used.
  • the specific implementation manner of mapping to at least two ZC sequences and generating an extended sequence may be: Generate an extension sequence.
  • S 2 represents a spreading sequence
  • K represents the number of subsequences included in the spreading sequence
  • K N/Q
  • N represents the number of bits of additional information
  • Q represents the modulation order of QAM modulation
  • k represents the number of the subsequence
  • ⁇ k represents the second preset weight value of the kth subsequence
  • An offset k -bit cyclic shift representing a sequence of x u (n) of the root sequence numbered w 0 (k)
  • a 0 (m) represents additional information of the transmitting end carried by the mth sub-sequence
  • W km represents a K ⁇ K matrix
  • K, Q, offset k and W km are all configured according to sequence information, and further, ⁇ k can also be based on The sequence information is configured.
  • a 0 (m) is transformed into B 0 (k) and then modulated onto the ZC sequence.
  • One possible transform may be a Walsh sequence transform, and the main purpose is to make the information bit bearer more robust. Fight against possible interference.
  • the process of generating the foregoing PRACH sequence is as shown in FIG. 3A, where:
  • BLOCK 1 Determine a (u 0 , offset, Nzc), and use the ZC sequence with the identification information of the transmitting end as the basic sequence of the PRACH;
  • BLOCK 4 Modulating each ZC sequence carrying additional information with B 0 (k);
  • BLOCK 5 The individual branches are multiplied by the weight values ⁇ , ⁇ k to adjust.
  • BLOCK 6 Adds two parts of the signal in BLOCK 5 (base sequence and extended sequence).
  • the specific implementation manner of generating the extended sequence by mapping the additional information of the transmitting end to one ZC sequence is two.
  • S 3 represents a spreading sequence
  • y k (n) represents a kth ZC sequence in K ZC sequences
  • y k (n, offset k ) represents an offset k -bit cyclic shift of y k (n)
  • N represents the number of bits of additional information at the transmitting end
  • the K ZC sequences, offset k , and ⁇ k are all configured according to the sequence information.
  • the correspondence between the format of the pre-stored extra information and the number of the ZC sequence can be as shown in Table 2, wherein a 0 , a 1 , a 2 , ... a n in Table 2 respectively represent additional information.
  • the process of generating the foregoing PRACH sequence is as shown in FIG. 3B, where:
  • BLOCK 1 Determine a (u 0 , offset, Nzc), and use the ZC sequence with the identification information of the transmitting end as the basic sequence of the PRACH;
  • BLOCK 2 The additional information carried is mapped to a ZC sequence, numbered k;
  • BLOCK 3 According to the sequence numbered k, the extension sequence is determined to be y k (n, offset k );
  • BLOCK 5 Adds two parts of the signal in BLOCK 4 (base sequence and extended sequence).
  • the second implementation manner of generating the extended sequence is a hybrid manner of the sequence selection mapping and the QAM modulation mapping by mapping the additional information of the transmitting end to a ZC sequence.
  • the method specifically includes the following steps: first, according to the pre-stored additional information.
  • S 4 represents a spreading sequence
  • y k (n) represents the kth ZC sequence in the K ZC sequences
  • y k (n, offset k ) represents an offset k -bit cyclic shift of y k (n)
  • N 1 represents the number of bits of the first partial additional information
  • ⁇ k represents the fourth preset weight value
  • K ZC sequences, offset k , ⁇ k are all configured according to the sequence information. It should be noted that N 1 is smaller than the total number of bits of additional information.
  • j represents the imaginary unit
  • j sqrt(-1)
  • sqrt(*) represents the square root of a number.
  • sequence selection mapping is combined with the QAM modulation mapping, that is, the N 1 bit corresponding to the additional information adopts a sequence selection mapping manner, and the remaining N 2 bits in the additional information are mapped according to the N 2 order QAM.
  • N 2 is the number of bits of the additional information
  • the additional part other than the first additional information is information of the second portion, the signal constellation of modulated symbols corresponding to constellation points in FIG.
  • the process of generating the foregoing PRACH sequence is as shown in FIG. 3C, where:
  • BLOCK 1 Determine a (u 0 , offset, Nzc), and use the ZC sequence with the identification information of the transmitting end as the basic sequence of the PRACH;
  • BLOCK 2 The N 1 bit in the additional information carried is mapped to a ZC sequence, numbered k;
  • BLOCK 3 According to the sequence numbered k, the extension sequence is determined to be y k (n, offset k );
  • BLOCK 4 The remaining N 2 bits in the additional information to be carried generate a constellation symbol s 2 multiplied by s 2 ⁇ y k (n, offset k ) according to the N 2 order QAM mapping;
  • BLOCK 6 Adds two parts of the signal in BLOCK 5 (base sequence and extended sequence).
  • the foregoing step 204 includes three specific implementation manners.
  • the first specific implementation manner is: directly transmitting a PRACH sequence generated after the extension sequence is superimposed to the base sequence.
  • the second specific implementation manner is a time division multiplexing manner, where the method specifically includes the following steps: sending a basic sequence at a first preset time; and transmitting an extended sequence at a second preset time. That is, the basic sequence and the extended sequence are transmitted in different time slots.
  • the third specific implementation manner is frequency division multiplexing.
  • the method is specifically: sending a basic sequence in a first preset frequency domain subband, and simultaneously transmitting an extended sequence in a second preset time. That is, the base sequence and the extended sequence are at the same time, but are transmitted in different frequency domain subbands.
  • the manner of generating the PRACH sequence in FIG. 3C is taken as an example to further explain the manner of transmitting the PRACH sequence.
  • the process of transmitting the base sequence and the extended sequence is as shown in FIG. 3D.
  • the base sequence and the extended sequence are transmitted by frequency division multiplexing, the base sequence and the extension are transmitted.
  • the sequence of the process is shown in Figure 3E.
  • the abscissa in the simple coordinates in FIGS. 3D and 3E represents time, and the ordinate represents frequency.
  • the base sequence carrying the identifier information of the sender and the extension sequence carrying the additional information of the sender are generated according to the ZC sequence, and the extension sequence is superimposed to the base sequence to generate the PRACH sequence, so that The PRACH sequence sent to the receiving end during the random access process can carry more useful information within the limited resources.
  • some embodiments of the present disclosure provide a transmitting end, where the sending end 400 includes:
  • the obtaining module 401 is configured to obtain a physical random access channel PRACH sequence, where the PRACH sequence includes: a basic sequence carrying identifier information of the transmitting end; and an extended sequence carrying additional information of the transmitting end;
  • the first sending module 402 is configured to send the PRACH sequence to the receiving end;
  • the first receiving module 403 is configured to receive a response message sent by the receiving end.
  • the sending end 400 may be a terminal, such as a smart phone or a tablet computer, or may be a network device, such as a base station, a core network control node, or the like.
  • a terminal such as a smart phone or a tablet computer
  • a network device such as a base station, a core network control node, or the like.
  • the sending end is a terminal
  • the receiving end is a network device
  • the transmitting end is a network device
  • the receiving end is a terminal.
  • the obtaining module 401 includes:
  • a first generating submodule 4011 configured to generate a base sequence according to the ZC sequence
  • a second generation submodule 4012 configured to generate an extended sequence according to the ZC sequence
  • the superposition sub-module 4013 is configured to superimpose the extended sequence to the base sequence to generate a PRACH sequence.
  • ZC sequence x u (n) represents the ZC sequence
  • u represents the number of the root sequence
  • N ZC represents the sequence length
  • n represents the nth sample point of the sequence
  • j represents the imaginary unit
  • both u and N ZC are pre-issued according to the receiving end.
  • the sequence information is configured.
  • the first generating submodule 4011 is specifically configured to pass the formula Generating a base sequence
  • S 1 represents a base sequence
  • ⁇ represents a first preset weight value.
  • the offset bits representing the x u (n) sequence of the root sequence numbered u 0 are cyclically shifted, and u 0 and offset are both configured according to the sequence information.
  • the second generating submodule 4012 includes:
  • a first generating unit 40121 configured to generate a spreading sequence by mapping additional information of the transmitting end to at least two ZC sequences;
  • the second generating unit 40122 is configured to generate an extended sequence by mapping additional information of the transmitting end to a ZC sequence.
  • the first generating unit 40121 is specifically configured to adopt a formula Generating an extended sequence
  • S 2 represents a spreading sequence
  • K represents the number of subsequences included in the spreading sequence
  • K N/Q
  • N represents the number of bits of additional information
  • Q represents the modulation order of QAM modulation
  • k represents the number of the subsequence
  • ⁇ k represents the second preset weight value of the kth subsequence
  • An offset k -bit cyclic shift representing a sequence of x u (n) of the root sequence numbered w 0 (k)
  • a 0 (m) represents additional information of the transmitting end carried by the mth subsequence
  • W km represents a K ⁇ K matrix
  • K, Q, offset k and W km are all configured according to the sequence information.
  • the second generating unit 40122 includes:
  • a first determining subunit 401221 configured to determine, according to a correspondence between a format of the pre-stored additional information and a number of the ZC sequence, a number k of the ZC sequence corresponding to the format of the additional information of the transmitting end;
  • S 3 represents a spreading sequence
  • y k (n) represents a kth ZC sequence in K ZC sequences
  • y k (n, offset k ) represents an offset k -bit cyclic shift of y k (n)
  • the second generating unit 40122 includes:
  • a second determining subunit 401223, configured to determine, according to a correspondence between a format of the pre-stored additional information and a number of the ZC sequence, a number k of the ZC sequence corresponding to the format of the first part of the additional information of the additional information of the transmitting end;
  • a third determining subunit 401224 configured to determine, according to a correspondence between a format of the pre-stored additional information and a constellation symbol, a constellation symbol s 2 corresponding to a format of the second partial additional information except the first partial additional information in the additional information of the transmitting end ;
  • S 4 represents a spreading sequence
  • y k (n) represents the kth ZC sequence in the K ZC sequences
  • y k (n, offset k ) represents an offset k -bit cyclic shift of y k (n)
  • N 1 represents the number of bits of the first partial additional information
  • ⁇ k represents the fourth preset weight value
  • K ZC sequences, offset k , ⁇ k are all configured according to the sequence information.
  • the first sending module 402 includes:
  • the first sending submodule 4021 is configured to send a basic sequence at a first preset time
  • the second sending submodule 4022 is configured to send the extended sequence at the second preset time.
  • the first sending module 402 is configured to send the basic sequence in the first preset frequency domain subband, and simultaneously send the extended sequence in the second preset time.
  • the transmitting end sends the basic sequence carrying the identification information of the transmitting end and the PRACH sequence of the extended sequence carrying the additional information of the transmitting end, and is sent to the receiving end by transmitting to the receiving end in the random access process.
  • the response message causes the PRACH sequence sent by the sender during the random access procedure to carry more useful information.
  • the sending end is a terminal, in order to better achieve the above purpose, as shown in FIG. 6, some embodiments of the present disclosure provide a terminal, where the terminal 600 includes: at least one processor 601, a memory 602, and at least one network interface. 604 and user interface 603.
  • the various components in terminal 600 are coupled together by a bus system 605.
  • the bus system 605 is used to implement connection communication between these components.
  • the bus system 605 includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • various buses are labeled as bus system 605 in FIG.
  • the user interface 603 may include a display, a keyboard, or a pointing device (eg, a mouse, a trackball, a touchpad, or a touch screen, etc.).
  • a pointing device eg, a mouse, a trackball, a touchpad, or a touch screen, etc.
  • the memory 602 in an embodiment of the present disclosure may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SDRAM Synchronous Connection Dynamic Random Access Memory
  • DRRAM direct memory bus random access memory
  • memory 602 stores elements, executable modules or data structures, or a subset thereof, or their set of extensions: operating system 6021 and application 6022.
  • the operating system 6021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks.
  • the application 6022 includes various applications, such as a media player (Media Player), a browser, and the like, for implementing various application services. Programs that implement the methods of some embodiments of the present disclosure may be included in the application 6022.
  • the processor 601 is configured to acquire a physical random access channel PRACH sequence; wherein, the PRACH The sequence includes: a basic sequence carrying the identifier information of the sender and an extended sequence carrying the additional information of the sender; sending the PRACH sequence to the receiver; and receiving the response message sent by the receiver.
  • Processor 601 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 601 or an instruction in a form of software.
  • the processor 601 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in connection with some embodiments of the present disclosure may be directly embodied by the hardware decoding processor, or by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 602, and the processor 601 reads the information in the memory 602 and completes the steps of the above method in combination with its hardware.
  • the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processing (DSP), Digital Signal Processing Equipment (DSP Device, DSPD), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described herein In an electronic unit or a combination thereof.
  • ASICs Application Specific Integrated Circuits
  • DSP Digital Signal Processing
  • DSP Device Digital Signal Processing Equipment
  • PLD programmable Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • the techniques described herein can be implemented by modules (eg, procedures, functions, and so on) that perform the functions described herein.
  • the software code can be stored in memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • the processor 601 is further configured to: generate a base sequence according to the ZC sequence; generate a spread sequence according to the ZC sequence; and superimpose the extended sequence to the base sequence to generate a PRACH sequence.
  • the ZC sequence x u (n) represents the ZC sequence
  • u represents the number of the root sequence
  • N ZC represents the sequence length
  • n represents the nth sample point of the sequence
  • j represents the imaginary unit
  • both u and N ZC are pre-issued according to the receiving end.
  • the sequence information is configured.
  • the processor 601 is further configured to: pass a formula Generating a base sequence; wherein S 1 represents a base sequence and ⁇ represents a first preset weight value, The offset bits representing the x u (n) sequence of the root sequence numbered u 0 are cyclically shifted, and u 0 and offset are both configured according to the sequence information.
  • the processor 601 is further configured to: generate an extended sequence by mapping additional information of the transmitting end to at least two ZC sequences; or generate an extended sequence by mapping additional information of the transmitting end to one ZC sequence.
  • the processor 601 is further configured to: send the basic sequence at the first preset time; and send the extended sequence at the second preset time.
  • the processor 601 is further configured to: send the basic sequence in the first preset frequency domain subband, and simultaneously send the extended sequence in the second preset time.
  • the terminal 600 can implement various processes implemented by the sender in some embodiments of the present disclosure. To avoid repetition, details are not described herein again.
  • the terminal sends the basic sequence carrying the identification information of the transmitting end and the PRACH sequence of the extended sequence carrying the additional information of the transmitting end to the receiving end, and receives the PRACH sequence of the extended sequence carrying the additional information of the transmitting end.
  • the response message causes the PRACH sequence sent by the sender in the random access procedure to carry more useful information.
  • some embodiments of the present disclosure provide a network device, where the network device includes: a processor 700; and the processing through the bus interface a memory 720 coupled to the processor 700, and a transceiver 710 coupled to the processor 700 via a bus interface; the memory 720 for storing programs and data used by the processor in performing operations; The 710 sends the data information or the pilot, and the uplink control channel is also received by the transceiver 710.
  • the processor 700 invokes and executes the program and data stored in the memory 720, the method is specifically used to obtain the physical random access channel PRACH sequence.
  • the PRACH sequence includes: a base sequence carrying the identifier information of the sender and an extended sequence carrying the additional information of the sender; sending the PRACH sequence to the receiver; and receiving the response message sent by the receiver.
  • the processor 700 is further configured to: generate a base sequence according to the ZC sequence; generate a spread sequence according to the ZC sequence; and superimpose the extended sequence to the base sequence to generate a PRACH sequence.
  • the ZC sequence x u (n) represents the ZC sequence
  • u represents the number of the root sequence
  • N ZC represents the sequence length
  • n represents the nth sample point of the sequence
  • j represents the imaginary unit
  • both u and N ZC are pre-issued according to the receiving end.
  • the sequence information is configured.
  • the processor 700 is further configured to: pass a formula Generating a base sequence; wherein S 1 represents a base sequence and ⁇ represents a first preset weight value, The offset bits representing the x u (n) sequence of the root sequence numbered u 0 are cyclically shifted, and u 0 and offset are both configured according to the sequence information.
  • the processor 700 is further configured to: generate an extended sequence by mapping additional information of the transmitting end to at least two ZC sequences; or generate an extended sequence by mapping additional information of the transmitting end to one ZC sequence.
  • the processor 700 is further configured to: send the basic sequence at the first preset time; and send the extended sequence at the second preset time.
  • the processor 700 is further configured to: send the basic sequence in the first preset frequency domain subband, and simultaneously send the extended sequence in the second preset time.
  • the transceiver 710 is configured to receive and transmit data under the control of the processor 700.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 700 and various circuits of memory represented by memory 720.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 710 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 can store data used by the processor 700 in performing operations.
  • the network device sends the basic sequence of the identification information of the transmitting end and the PRACH sequence of the extended sequence carrying the additional information of the transmitting end, and receives the response message sent by the receiving end, so that the transmitting end is sent to the receiving end.
  • the PRACH sequence transmitted during the random access procedure carries more useful information.
  • some embodiments of the present disclosure provide a random access method, which is applied to a receiving end, and the method includes:
  • Step 801 Receive a physical random access channel PRACH sequence sent by the sending end.
  • the foregoing PRACH sequence includes: a basic sequence carrying identifier information of the transmitting end, and a spreading sequence carrying additional information of the transmitting end, where the additional information of the transmitting end may include other identifier information of the transmitting end and beam information of the transmitting end, etc., so that the receiving end is When the PRACH sequence is received, more useful information related to the sender can be obtained, so as to facilitate subsequent response to the PRACH sequence. It should be noted that the other identifier information in the additional information is different from the identifier information carried in the base sequence, but it can be used to identify the sender.
  • the receiving end may be a terminal, such as a smart phone, a tablet computer, or the like, or may be a network device, such as a base station, a core network control node, or the like.
  • the transmitting end is a network device; and if the receiving end is a network device, then the transmitting end is a terminal.
  • Step 802 Send a response message to the sending end according to the PRACH sequence.
  • the foregoing response message includes information for indicating whether to agree to the sender access, and the like. It should be noted that the response message may be the same as the random access response in the random access procedure of the 4G LTE, and this is common knowledge to those skilled in the art, and thus will not be described in detail herein.
  • the first specific implementation manner is: directly receiving a PRACH sequence in which the extended sequence and the base sequence are superposed.
  • the second specific implementation manner is a time division multiplexing manner, where the method specifically includes the following steps: first, receiving a basic sequence at a first preset time; then performing channel estimation according to the basic sequence to obtain a channel estimation result; The channel estimation result receives the extended sequence at the second preset time.
  • the first preset time and the second preset time are pre-negotiated between the receiving end and the sending end.
  • the third specific implementation manner is frequency division multiplexing.
  • the method includes the following steps: first, receiving a basic sequence in a first preset frequency domain subband; and then performing channel estimation according to the basic sequence to obtain a channel estimation result; And according to the obtained channel estimation result, the extended sequence is received in the second preset frequency domain subband.
  • the first preset frequency domain subband and the second preset frequency domain subband are pre-negotiated between the receiving end and the sending end.
  • the base end sequence including the identifier information carrying the sender and the PRACH sequence of the extended sequence carrying the additional information of the sender are received, and the response message is sent to the sender according to the PRACH sequence, so that the sender Successfully implementing the PRACH sequence transmitted during the random access process carries more useful information.
  • some embodiments of the present disclosure provide a receiving end, where the receiving end 900 includes:
  • the second receiving module 901 is configured to receive a physical random access channel PRACH sequence sent by the sending end, where the PRACH sequence includes: a basic sequence carrying the identifier information of the sending end, and an extended sequence carrying the additional information of the sending end;
  • the second sending module 902 is configured to send a response message to the sending end according to the PRACH sequence.
  • the receiving end 900 may be a terminal, such as a smart phone, a tablet computer, or the like, or may be a network device, such as a base station, a core network control node, or the like.
  • a terminal such as a smart phone, a tablet computer, or the like
  • a network device such as a base station, a core network control node, or the like.
  • the transmitting end is a network device; and if the receiving end is a network device, then the transmitting end is a terminal.
  • the second receiving module 901 includes:
  • the first receiving submodule 9011 is configured to receive the basic sequence at the first preset time
  • a first estimation sub-module 9012 configured to perform channel estimation according to the basic sequence, to obtain a channel estimation result
  • the second receiving sub-module 9013 is configured to receive the extended sequence at the second preset time according to the obtained channel estimation result.
  • the second receiving module 901 includes:
  • the third receiving submodule 9014 is configured to receive the basic sequence in the first preset frequency domain subband
  • a second estimation sub-module 9015 configured to perform channel estimation according to the basic sequence, to obtain a channel estimation result
  • the fourth receiving submodule 9016 is configured to receive the extended sequence in the second preset frequency domain subband according to the obtained channel estimation result.
  • the receiving end receives the PRACH sequence including the basic sequence carrying the identification information of the transmitting end and the extended sequence carrying the additional information of the transmitting end, and sends a response message to the transmitting end according to the PRACH sequence, so that the transmitting end Successfully implementing the PRACH sequence transmitted during the random access process carries more useful information.
  • the receiving end is a network device, in order to better achieve the above purpose, as shown in FIG. 11 , some embodiments of the present disclosure provide a network device, where the network device 1100 includes: a processor 1101, a transceiver 1102, and a memory 1103. , user interface 1104 and bus interface, wherein:
  • the processor 1101 is configured to read a program in the memory 1103 and perform the following process:
  • the PRACH sequence includes: a basic sequence carrying the identifier information of the transmitting end and an extended sequence carrying the additional information of the transmitting end; and sending a response message to the transmitting end according to the PRACH sequence.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1101 and various circuits of memory represented by memory 1103.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver 1102 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1104 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 can store data used by the processor 1101 when performing operations.
  • the processor 1101 is further configured to: receive a basic sequence at a first preset time; perform channel estimation according to the basic sequence, obtain a channel estimation result; and receive the extended sequence at the second preset time according to the obtained channel estimation result.
  • the processor 1101 is further configured to: receive a basic sequence in the first preset frequency domain subband; perform channel estimation according to the basic sequence, obtain a channel estimation result; and obtain a second preset frequency according to the obtained channel estimation result.
  • the domain subband receives the extended sequence.
  • the network device of some embodiments of the present disclosure by receiving a basic sequence including the identification information of the transmitting end and a PRACH sequence of the extended sequence carrying the additional information of the transmitting end, and sending a response message to the transmitting end according to the PRACH sequence, so that the transmitting end succeeds in realizing
  • the PRACH sequence sent during the random access process carries more useful information.
  • a terminal which may be a mobile phone, a tablet computer, or a personal digital assistant (Personal Digital Assistant, PDA), or car computer, etc.
  • PDA Personal Digital Assistant
  • the terminal 1200 in FIG. 12 includes a radio frequency (RF) circuit 1210, a memory 1220, an input unit 1230, a display unit 1240, a processor 1260, an audio circuit 1270, a WiFi (Wireless Fidelity) module 1280, and a power supply 1290.
  • RF radio frequency
  • the input unit 1230 can be configured to receive numeric or character information input by the user, and generate signal input related to user setting and function control of the terminal 1200.
  • the input unit 1230 may include a touch panel 1231.
  • the touch panel 1231 also referred to as a touch screen, can collect touch operations on or near the user (such as the operation of the user using any suitable object or accessory such as a finger or a stylus on the touch panel 1231), and according to the preset The programmed program drives the corresponding connection device.
  • the touch panel 1231 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information.
  • the processor 1260 is provided and can receive commands from the processor 1260 and execute them.
  • the touch panel 1231 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the input unit 1230 may further include other input devices 1232.
  • the other input devices 1232 may include, but are not limited to, a physical keyboard, function keys (such as a volume control button, a switch button, etc.), a trackball, a mouse, a joystick, and the like. One or more of them.
  • the display unit 1240 can be used to display information input by the user or information provided to the user and various menu interfaces of the terminal 1200.
  • the display unit 1240 can include a display panel 1241.
  • the display panel 1241 can be configured in the form of an LCD or an Organic Light-Emitting Diode (OLED).
  • the touch panel 1231 may cover the display panel 1241 to form a touch display screen, and when the touch display screen detects a touch operation on or near it, it is transmitted to the processor 1260 to determine the type of the touch event, and then the processor The 1260 provides a corresponding visual output on the touch display depending on the type of touch event.
  • the touch display includes an application interface display area and a common control display area.
  • the arrangement manner of the application interface display area and the display area of the common control is not limited, and the arrangement manner of the two display areas can be distinguished by up-and-down arrangement, left-right arrangement, and the like.
  • the application interface display area can be used to display the interface of the application. Each interface can contain interface elements such as at least one application's icon and/or widget desktop control.
  • the application interface display area can also be an empty interface that does not contain any content.
  • the common control display area is used to display controls with high usage, such as setting buttons, interface numbers, scroll bars, phone book icons, and the like.
  • the processor 1260 is a control center of the terminal 1200, and connects various parts of the entire mobile phone by using various interfaces and lines, by running or executing software programs and/or modules stored in the first memory 1221, and calling the second memory.
  • the data in 1222 performs various functions and processing data of the terminal 1200, thereby performing overall monitoring on the terminal 1200.
  • the processor 1260 can include one or more processing units.
  • the processor 1260 is configured to receive physical random access sent by the sender by calling a software program and/or module stored in the first memory 1221 and/or data in the second memory 1222.
  • a channel PRACH sequence where the PRACH sequence includes: a base sequence carrying identifier information of the sender and an extension sequence carrying additional information of the sender; and transmitting a response message to the sender according to the PRACH sequence.
  • the processor 1260 is further configured to: receive the basic sequence at the first preset time; perform channel estimation according to the basic sequence, obtain a channel estimation result; and receive the extended sequence at the second preset time according to the obtained channel estimation result.
  • the processor 1260 is further configured to: receive a basic sequence in the first preset frequency domain subband; perform channel estimation according to the basic sequence, obtain a channel estimation result; and obtain a second preset frequency according to the obtained channel estimation result.
  • the domain subband receives the extended sequence.
  • the terminal receives the PRACH sequence including the base sequence carrying the identifier information of the sender and the extended sequence carrying the additional information of the sender, and sends a response message to the sender according to the PRACH sequence, so that the terminal sends the response message to the sender.
  • the terminal successfully implements the PRACH sequence transmitted during the random access procedure to carry more useful information.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, a portion of the technical solution of the present disclosure that contributes in essence or to the related art or a part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本公开的实施例提供了一种随机接入方法、发送端及接收端，其中该方法包括：获取物理随机接入信道PRACH序列；其中，PRACH序列包括：携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列；将PRACH序列发送给接收端；接收接收端发送的响应消息。

Description

一种随机接入方法、发送端及接收端
相关申请的交叉引用
本申请主张在2016年12月30日在中国提交的中国专利申请号No.201611261970.2的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种随机接入方法、发送端及接收端。
背景技术
相关技术中的第四代移动通信技术4G长期演进(LTE，Long Term Evolution)物理层设计的物理随机接入信道(PRACH，Physical Random Access Channel)主要用于终端侧发起上行随机接入请求，使得基站侧根据其请求进一步决定后续的响应。相关技术中的随机接入过程主要的4个步骤如下：步骤一：前导码(即PRACH序列)发送；步骤二：随机接入响应；步骤三：层2/层3消息；步骤四：竞争解决消息。
其中步骤一主要有物理层的前导(Preamble)码生成的序列(sequence)映射到物理层的时频资源后发送，LTE目前主持5种格式，其中格式(format)4，长度相当于LTE的一个符号长度。
为获取PRACH序列，LTE采用的ZC(Zaddoff Chu)序列如下：
Figure PCTCN2017117466-appb-000001
其中，u是根序列的编号，N ZC是序列长度，n指序列的第n个采样点。且UE获取PRACH序列的过程如下：
一个UE在一个小区内可以使用的PRACH序列的最大数是64，这64个不同类型的PRACH序列产生过程如下：
第一步，采用根序列索引(root sequence index)产生Zaddoff Chu基序列(对于Format 0～3，N ZC＝839，Format 4，N ZC＝139)，root sequence index由系统信息块(SIB)2通知；其中，终端逻辑(Logical)root sequence index与根序列的编号的对应关系如表1所示。
第二步，通过基序列的循环移位产生64种不同的序列。其中，循环移位 间隔也由网络侧配置。
Figure PCTCN2017117466-appb-000002
表1
例如当root sequence index为22，循环移位间隔为26，得到64种不同的PRACH的顺序如下。
PRACH前导序列[0]＝基序列
PRACH前导序列[1]＝基序列作1×26个采样点循环移位
PRACH前导序列[2]＝基序列作2×26个采样点循环移位
…
PRACH前导序列[31]＝基序列作31×26个采样点循环移位
PRACH前导序列[32]＝基序列作1个采样点循环移位
PRACH前导序列[33]＝基序列作1+1×26个采样点循环移位
PRACH前导序列[34]＝基序列作1+2×26个采样点循环移位
PRACH前导序列[63]＝基序列作1+31×26个采样点循环移位
而随着通信技术的发展，第五代移动通信技术(5G)新空口(NR)的随机接入过程，要求在发送端发送PRACH序列的过程中携带尽可能多的有用信息，例如终端标识等，但目前的PRACH序列携带的信息有限，无法在有限资源内携带更多的有用信息。
发明内容
本公开的实施例提供一种随机接入方法、发送端及接收端，以解决PRACH序列携带的信息有限，无法在有限资源内携带更多的有用信息的问题。
第一方面，本公开的实施例提供了一种随机接入方法，应用于发送端，该方法包括：
获取物理随机接入信道PRACH序列；其中，PRACH序列包括：携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列；
将PRACH序列发送给接收端；
接收接收端发送的响应消息。
第二方面，本公开的实施例还提供了一种发送端，该发送端包括：
获取模块，用于获取物理随机接入信道PRACH序列；其中，PRACH序列包括：携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列；
第一发送模块，用于将PRACH序列发送给接收端；
第一接收模块，用于接收接收端发送的响应消息。
第三方面，本公开的实施例还提供了一种随机接入方法，应用于接收端，该方法包括：
接收发送端发送的物理随机接入信道PRACH序列；其中，PRACH序列包括：携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列；
根据PRACH序列，向发送端发送响应消息。
第四方面，本公开的实施例还提供了一种接收端，该接收端包括：
第二接收模块，用于接收发送端发送的物理随机接入信道PRACH序列；其中，PRACH序列包括：携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列；
第二发送模块，用于根据PRACH序列，向发送端发送响应消息。
第五方面，本公开的实施例还提供了一种发送端，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现上述随机接入方法中的步骤。
第六方面，本公开的实施例还提供了一种接收端，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现上述随机接入方法中的步骤。
第七方面，本公开的实施例还提供了一种计算机可读存储介质，其中，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现上述随机接入方法中的步骤。
第八方面，本公开的实施例还提供了一种计算机可读存储介质，其中，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实 现上述随机接入方法中的步骤。
这样，在本公开的实施例中，通过在随机接入过程中向接收端发送，包括携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列的PRACH序列，并接收接收端发送的响应消息，使发送端在随机接入过程中发送的PRACH序列携带更多的有用信息。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例的描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本公开一些实施例中随机接入方法的流程图；
图2为本公开一些实施例中随机接入方法的流程图；
图3A为本公开一些实施例中生成PRACH序列的示意图之一；
图3B为本公开一些实施例中生成PRACH序列的示意图之二；
图3C为本公开一些实施例中生成PRACH序列的示意图之三；
图3D为本公开一些实施例中发送PRACH序列的示意图之一；
图3E为本公开一些实施例中发送PRACH序列的示意图之二；
图4为本公开一些实施例中发送端的结构示意图之一；
图5为本公开一些实施例中发送端的结构示意图之二；
图6为本公开一些实施例中终端的结构示意图；
图7为本公开一些实施例中网络设备的结构示意图；
图8为本公开一些实施例中随机接入方法的流程图；
图9为本公开一些实施例中接收端的结构示意图之一；
图10为本公开一些实施例中接收端的结构示意图之二；
图11为本公开一些实施例中网络设备的结构示意图；
图12为本公开一些实施例中终端的结构示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清 楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
如图1所示，本公开的一些实施例提供了一种随机接入方法，应用于发送端，该方法包括：
步骤101，获取物理随机接入信道PRACH序列。
其中，上述PRACH序列包括：携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列。其中，发送端的额外信息可以包括发送端的其他标识信息以及发送端的波束信息等。需要说明的是，额外信息中的其他标识信息与基础序列携带的标识信息不同，但其都能用于标识上述发送端。
且在本公开的一些实施例中，通过码子叠加的方式获取包含基础序列与扩展序列的PRACH序列。因为对于随机接入(例如上行随机接入)这样的多用户共用一段资源的物理层过程，采用码域叠加的方式能充分利用系统“软容量”的特点，实现在有限资源内携带更多的有用信息的目的。
步骤102，将PRACH序列发送给接收端。
其中，在随机接入过程中，发送端向接收端发送包含上述基础序列与扩展序列的PRACH序列，使得接收端能根据更多的有用信息(即上述发送端的标识信息与额外信息)作出响应。
步骤103，接收接收端发送的响应消息。
其中，上述响应消息包括用于指示是否同意发送端接入的信息等。需要说明的是，该响应消息可与4G LTE的随机接入过程中的随机接入响应相同，且这对于本领域的技术人员而言属于公知常识，因此在此不进行过多赘述。
且在本公开的一些实施例中，上述发送端可以为终端，例如智能手机、平板电脑等，也可以为网络设备，例如基站、核心网控制节点等。当然若发送端为终端，那么接收端便为网络设备；而若发送端为网络设备，那么接收端便为终端。
由此可见，在本公开的一些实施例中，通过在随机接入过程中向接收端发送，包括携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列的PRACH序列，并接收接收端发送的响应消息，使发送端在随机接入过程中发送的PRACH序列携带更多的有用信息。
如图2所示，本公开的一些实施例提供了一种随机接入方法，应用于发送端，该方法包括：
步骤201，根据ZC序列，生成基础序列。
其中，上述基础序列携带发送端的标识信息，使得接收端能根据基础序列区分不同的发送端。
且在本公开的一些实施例中，上述ZC序列
Figure PCTCN2017117466-appb-000003
表示ZC序列，u表示根序列的编号，N ZC表示序列长度，n表示序列的第n个采样点，j表示虚数单位，且u与N ZC均根据接收端预先下发的序列信息配置得到。需要说明的是，接收端下发的序列信息是指发送端获取PRACH序列时需用到的各种信息，其具体包括ZC序列的相关参数(例如根序列的编号、序列长度等)、生成基础序列与扩展序列时涉及到的根序列的编号、循环移位的位数、扩展序列所包含的子序列的个数、正交振幅调制(QAM，Quadrature Amplitude Modulation)的调制阶数、相关矩阵(例如K×K矩阵)、多个ZC序列、多个权重值等。且在获取PRACH序列时需用到的序列信息所包含的各种信息会在后文详细阐述。
其中，在本公开的一些实施例中，可通过公式
Figure PCTCN2017117466-appb-000004
生成基础序列。其中，S 1表示基础序列，β表示第一预设权重值，
Figure PCTCN2017117466-appb-000005
表示根序列的编号为u 0的x u(n)序列的offset位循环移位，且u 0与offset均根据序列信息配置得到，此外，β也可根据序列信息配置得到。
步骤202，根据ZC序列，生成扩展序列。
其中，上述扩展序列发送端的额外信息，使得接收端能根据扩展序列获得本次随机接入携带的额外信息，例如发送端的其他标识信息以及发送端的波束信息等，以便接收端对本次随机接入作出响应。
其中，在本公开的一些实施例中，可通过将发送端的额外信息映射到至少两个ZC序列，生成扩展序列；或者，通过将发送端的额外信息映射到一个ZC序列，生成扩展序列。
步骤203，将扩展序列叠加至基础序列，生成PRACH序列。
在本公开的一些实施例中，由于在生成基础序列与扩展序列的过程中，基础序列与扩展序列均通过各自的权重值进行幅度与相位的调整，因此将基础序列与扩展序列叠加(即相加)得到的PRACH序列具备较好的接收性能。
步骤204，将PRACH序列发送给接收端。
在本公开的一些实施例中，可通过时分复用或者频分复用等方式将PRACH 序列发送给接收端。
步骤205，接收接收端发送的响应消息。
其中，上述响应消息包括用于指示是否同意发送端接入的信息等。且在本公开的一些实施例中，上述发送端可以为终端，例如智能手机、平板电脑等，也可以为网络设备，例如基站、核心网控制节点等。当然若发送端为终端，那么接收端便为网络设备；而若发送端为网络设备，那么接收端便为终端。
其中，在本公开的一些实施例中，若通过将发送端的额外信息映射到至少两个ZC序列，生成扩展序列，即通过位图(bitmap)映射方式生成扩展序列，那么通过将发送端的额外信息映射到至少两个ZC序列，生成扩展序列的具体实现方式可以为：通过公式
Figure PCTCN2017117466-appb-000006
生成扩展序列。其中，S 2表示扩展序列，K表示扩展序列所包含的子序列的个数，K＝N/Q，N表示额外信息的比特数，Q表示QAM调制的调制阶数，k表示子序列的编号，β k表示第k个子序列的第二预设权重值，
Figure PCTCN2017117466-appb-000007
表示根序列的编号为w 0(k)的x u(n)序列的offset k位循环移位，
Figure PCTCN2017117466-appb-000008
A 0(m)表示第m个子序列携带的发送端的额外信息，W km表示一个K×K矩阵，且K、Q、offset k以及W km均根据序列信息配置得到，此外，β k也可根据序列信息配置得到。需要说明的是，将A 0(m)变换为B 0(k)，然后调制到ZC序列上，一种可能的变换可以为Walsh序列变换，主要的目的是使信息比特的承载更加鲁棒，对抗可能的干扰。且若使用Walsh序列(即W)变换，那么A 0(m)变换为B 0(k)，即将序列A变换为序列B的过程如下所示，B＝W·A，其中，
Figure PCTCN2017117466-appb-000009
Figure PCTCN2017117466-appb-000010
其中
Figure PCTCN2017117466-appb-000011
运算是M与N克罗内克积。例如当K＝2时，
Figure PCTCN2017117466-appb-000012
此外，在本公开的一些实施例中，若通过bitmap映射方式生成扩展序列，那么生成上述PRACH序列的过程如图3A所示，其中：
(u，offset，Nzc)：表示长度为Nzc的第u个ZC根序列，进行offset位循环移位；
各个步骤如下：
BLOCK 1：确定一个(u 0，offset，Nzc)，将带有发送端的标识信息的ZC序列作为PRACH的基础序列；
BLOCK 2：携带的额外信息进行串并(S/P)变换记为{A 0(m)，m＝0，1，…K-1}；
BLOCK 3：对BLOCK2生成的信息序列进行白化处理，即用矩阵变换将序列{A 0(m)，m＝0，1，…K-1}变换成{B 0(k)，k＝0，1，…K-1}，变换矩阵为W km；
BLOCK 4：用B 0(k)调制各个承载额外信息的ZC序列；
BLOCK 5：对各个支路乘以权重值β，β k进行调整。
BLOCK 6：将BLOCK 5中(基础序列与扩展序列)两部分信号相加。
其中，在本公开的一些实施例中，若通过将发送端的额外信息映射到一个ZC序列，生成扩展序列，那么通过将发送端的额外信息映射到一个ZC序列，生成扩展序列的具体实现方式有两种。其中，第一种具体实现方式为序列选择映射方式，该方式具体包括如下步骤：首先根据预先存储的额外信息的格式与ZC序列的编号的对应关系，确定发送端的额外信息的格式对应的ZC序列的编号k；然后通过公式S 3＝β k·y k(n，offset k)生成扩展序列。其中，S 3表示扩展序列，y k(n)表示K个ZC序列中第k个ZC序列，y k(n，offset k)表示y k(n)的offset k位循环移位，β k表示第三预设权重值，K＝2 N，N表示发送端的额外信息的比特数，且K个ZC序列、offset k、β k均根据序列信息配置得到。其中作为一个示例，预先存储的额外信息的格式与ZC序列的编号的对应关系可如表2所示，其中，表2中的a 0，a 1，a 2，…a n分别表示额外信息的一比特位，a n表示第n+1(表2中的n＝3)位比特位。
Figure PCTCN2017117466-appb-000013
表2
此外，在本公开的一些实施例中，若通过序列选择映射方式生成扩展序列，那么生成上述PRACH序列的过程如图3B所示，其中：
(u，offset，Nzc)：表示长度为Nzc的第u个ZC根序列，进行offset位循环移位；
各个步骤如下：
BLOCK 1：确定一个(u 0，offset，Nzc)，将带有发送端的标识信息的ZC序列作为PRACH的基础序列；
BLOCK 2：携带的额外信息映射到一个ZC序列，编号为k；
BLOCK 3：根据编号为k的序列，确定扩展序列为y k(n，offset k)；
BLOCK 4：各支路乘以权值β，β k进行调整。
BLOCK 5：将BLOCK 4中(基础序列与扩展序列)两部分信号相加。
其中，通过将发送端的额外信息映射到一个ZC序列，生成扩展序列的第二种实现方式为序列选择映射结合QAM调制映射的混合方式，该方式具体包括如下步骤：首先根据预先存储的额外信息的格式与ZC序列的编号的对应关系，确定发送端的额外信息的第一部分额外信息的格式对应的ZC序列的编号k；然后根据预先存储的额外信息的格式与星座符号的对应关系，确定发送端的额外信息中除第一部分额外信息以外的第二部分额外信息的格式对应的星座符号s 2；最后通过公式S 4＝β k·s 2·y k(n，offset k)生成扩展序列。其中，S 4表示扩展序列，y k(n)表示K个ZC序列中第k个ZC序列，y k(n，offset k)表示y k(n)的offset k位循环移位，
Figure PCTCN2017117466-appb-000014
N 1表示第一部分额外信息的比特数，β k表示第四预设权重值，且K个ZC序列、offset k、β k均根据序列信息配置得到。需要说明的是，N 1小于额外信息的总比特数。
其中，作为一个示例，预先存储的额外信息的格式与ZC序列的编号的对应关系可如表2所示，而预先存储的额外信息的格式与星座符号的对应关系可如表3所示，其中，表3中的a 0，a 1，a 2，…a n2分别表示第二部分额外信息的一比特位，a n2表示第n 2+1(表3中的n 2＝1)位比特位，j表示虚数单位，j＝sqrt(-1)，sqrt(*)代表一个数的平方根运算。此外，需要说明的是，序列选择映射结合QAM调制映射的混合方式，即相当于额外信息的N 1比特采用序列选择映射方式，额外信息中剩下的N 2比特，根据N 2阶QAM映射的方式生成星座符号，并将星座符号调制到N 1比特采用序列选择映射方式得到的序列上。其中，N 2为额外信息中除第一部分额外信息以外的第二部分额外信息的比特数，星座符号为调制后的信号在星座图上对应的点。
Figure PCTCN2017117466-appb-000015
表3
且在本公开的一些实施例中，若通过序列选择映射结合QAM调制映射的混合方式生成扩展序列，那么生成上述PRACH序列的过程如图3C所示，其中：
(u，offset，Nzc)：表示长度为Nzc的第u个ZC根序列，进行offset位循环移位；
各个步骤如下：
BLOCK 1：确定一个(u 0，offset，Nzc)，将带有发送端的标识信息的ZC序列作为PRACH的基础序列；
BLOCK 2：携带的额外信息中的N 1位映射到一个ZC序列，编号为k；
BLOCK 3：根据编号为k的序列，确定扩展序列为y k(n，offset k)；
BLOCK 4：要携带的额外信息中的剩余N 2位根据N 2阶QAM映射的方式生成星座符号s 2乘以到s 2·y k(n，offset k)；
BLOCK 5：各支路乘以权值β，β k进行调整；
BLOCK 6：将BLOCK 5中(基础序列与扩展序列)两部分信号相加。
其中，在本公开的一些实施例中，上述步骤204包括三种具体的实现方式。其中第一种具体实现方式为：直接发送扩展序列叠加至基础序列后生成的PRACH序列。
其中，第二种具体实现方式为时分复用的方式，该方式具体包括如下步骤：在第一预设时刻发送基础序列；在第二预设时刻发送扩展序列。即采用不同时隙发送基础序列与扩展序列。
其中，第三种具体实现方式为频分复用，该方式具体为：在第一预设频域子带发送基础序列，并同时在第二预设时刻发送扩展序列。即，基础序列与扩展序列在同一时刻，但是在不同的频域子带进行发送。
在此，为便于进一步了解发送PRACH序列的方式，以图3C生成PRACH序列的方式为例，进一步阐述发送PRACH序列的方式。若采用时分复用的方式发送基础序列与扩展序列，则发送基础序列与扩展序列的过程如图3D所示，若采用频分复用的方式发送基础序列与扩展序列，则发送基础序列与扩展序列的过程如图3E所示。其中，图3D与图3E中的简易坐标中的横坐标表示时间，纵坐标表示频率。
由上可见，在本公开的一些实施例中，通过根据ZC序列，生成携带发送端的标识信息的基础序列与携带发送端的额外信息的扩展序列，并将扩展序列叠加至基础序列生成PRACH序列，使得在随机接入过程中向接收端发送的PRACH序列能在有限资源内携带更多的有用信息。
以上实施例分别详细介绍了不同场景下的随机接入方法，下面将结合图4与图5对与其对应的发送端做进一步介绍。
如图4至图5所示，本公开的一些实施例提供了一种发送端，该发送端400包括：
获取模块401，用于获取物理随机接入信道PRACH序列；其中，PRACH序列包括：携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列；
第一发送模块402，用于将PRACH序列发送给接收端；
第一接收模块403，用于接收接收端发送的响应消息。
其中，上述发送端400可以为终端，例如智能手机、平板电脑等，也可以 为网络设备，例如基站、核心网控制节点等。当然若发送端为终端，那么接收端便为网络设备；而若发送端为网络设备，那么接收端便为终端。
可选的，获取模块401包括：
第一生成子模块4011，用于根据ZC序列，生成基础序列；
第二生成子模块4012，用于根据ZC序列，生成扩展序列；
叠加子模块4013，用于将扩展序列叠加至基础序列，生成PRACH序列。
可选的，
ZC序列
Figure PCTCN2017117466-appb-000016
x u(n)表示ZC序列，u表示根序列的编号，N ZC表示序列长度，n表示序列的第n个采样点，j表示虚数单位，且u与N ZC均根据接收端预先下发的序列信息配置得到。
可选的，第一生成子模块4011，具体用于通过公式
Figure PCTCN2017117466-appb-000017
生成基础序列；
其中，S 1表示基础序列，β表示第一预设权重值，
Figure PCTCN2017117466-appb-000018
表示根序列的编号为u 0的x u(n)序列的offset位循环移位，且u 0与offset均根据序列信息配置得到。
可选的，第二生成子模块4012包括：
第一生成单元40121，用于通过将发送端的额外信息映射到至少两个ZC序列，生成扩展序列；或者
第二生成单元40122，用于通过将发送端的额外信息映射到一个ZC序列，生成扩展序列。
可选的，第一生成单元40121，具体用于通过公式
Figure PCTCN2017117466-appb-000019
生成扩展序列；
其中，S 2表示扩展序列，K表示扩展序列所包含的子序列的个数，K＝N/Q，N表示额外信息的比特数，Q表示QAM调制的调制阶数，k表示子序列的编号，β k表示第k个子序列的第二预设权重值，
Figure PCTCN2017117466-appb-000020
表示根序列的编号为w 0(k)的x u(n)序列的offset k位循环移位，
Figure PCTCN2017117466-appb-000021
A 0(m)表示第m个子序列携带的发送端的额外信息，W km表示一个K×K矩阵，且K、Q、offset k以及W km均根据序列信息配置得到。
可选的，第二生成单元40122包括：
第一确定子单元401221，用于根据预先存储的额外信息的格式与ZC序列的编号的对应关系，确定发送端的额外信息的格式对应的ZC序列的编号k；
第一生成子单元401222，用于通过公式S 3＝β k·y k(n，offset k)生成扩展序列；
其中，S 3表示扩展序列，y k(n)表示K个ZC序列中第k个ZC序列，y k(n，offset k)表示y k(n)的offset k位循环移位，β k表示第三预设权重值，K＝2 N，N表示发送端的额外信息的比特数，且K个ZC序列、offset k、β k均根据序列信息配置得到。
可选的，第二生成单元40122包括：
第二确定子单元401223，用于根据预先存储的额外信息的格式与ZC序列的编号的对应关系，确定发送端的额外信息的第一部分额外信息的格式对应的ZC序列的编号k；
第三确定子单元401224，用于根据预先存储的额外信息的格式与星座符号的对应关系，确定发送端的额外信息中除第一部分额外信息以外的第二部分额外信息的格式对应的星座符号s 2；
第二生成子单元401225，用于通过公式S 4＝β k·s 2·y k(n，offset k)生成扩展序列；
其中，S 4表示扩展序列，y k(n)表示K个ZC序列中第k个ZC序列，y k(n，offset k)表示y k(n)的offset k位循环移位，
Figure PCTCN2017117466-appb-000022
N 1表示第一部分额外信息的比特数，β k表示第四预设权重值，且K个ZC序列、offset k、β k均根据序列信息配置得到。
可选的，第一发送模块402包括：
第一发送子模块4021，用于在第一预设时刻发送基础序列；
第二发送子模块4022，用于在第二预设时刻发送扩展序列。
可选的，第一发送模块402，具体用于在第一预设频域子带发送基础序列，并同时在第二预设时刻发送扩展序列。
在本公开的一些实施例中，发送端通过在随机接入过程中向接收端发送，包括携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列的PRACH序列，并接收接收端发送的响应消息，使发送端在随机接入过程中发送的PRACH序列携带更多的有用信息。
若发送端为终端，为了更好的实现上述目的，如图6所示，本公开的一些实施例提供了一种终端，该终端600包括：至少一个处理器601、存储器602、至少一个网络接口604和用户接口603。终端600中的各个组件通过总线系统605耦合在一起。可理解，总线系统605用于实现这些组件之间的连接通信。总线系统605除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图6中将各种总线都标为总线系统605。
其中，用户接口603可以包括显示器、键盘或者点击设备(例如，鼠标，轨迹球(trackball)、触感板或者触摸屏等。
可以理解，本公开实施例中的存储器602可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-0nly Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本文描述的系统和方法的存储器602旨在包括但不限于这些和任意其它适合类型的存储器。
在一些实施方式中，存储器602存储了如下的元素，可执行模块或者数据结构，或者他们的子集，或者他们的扩展集：操作系统6021和应用程序6022。
其中，操作系统6021，包含各种系统程序，例如框架层、核心库层、驱动层等，用于实现各种基础业务以及处理基于硬件的任务。应用程序6022，包含各种应用程序，例如媒体播放器(Media Player)、浏览器(Browser)等，用于实现各种应用业务。实现本公开一些实施例方法的程序可以包含在应用程序6022中。
在本公开一些实施例中，通过调用存储器602存储的程序或指令，具体的，可以是应用程序6022中存储的程序或指令，处理器601用于获取物理随机接入信道PRACH序列；其中，PRACH序列包括：携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列；将PRACH序列发送给接收端；接收接收端发送的响应消息。
上述本公开一些实施例揭示的方法可以应用于处理器601中，或者由处理器601实现。处理器601可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器601中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器601可以是通用处理器、数字信号处 理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本公开一些实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本公开一些实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器602，处理器601读取存储器602中的信息，结合其硬件完成上述方法的步骤。
可以理解的是，本文描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits，ASIC)、数字信号处理器(Digital Signal Processing，DSP)、数字信号处理设备(DSP Device，DSPD)、可编程逻辑设备(Programmable Logic Device，PLD)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本申请所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本文所述功能的模块(例如过程、函数等)来实现本文所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
可选地，处理器601还用于：根据ZC序列，生成基础序列；根据ZC序列，生成扩展序列；将扩展序列叠加至基础序列，生成PRACH序列。
其中，ZC序列
Figure PCTCN2017117466-appb-000023
x u(n)表示ZC序列，u表示根序列的编号，N ZC表示序列长度，n表示序列的第n个采样点，j表示虚数单位，且u与N ZC均根据接收端预先下发的序列信息配置得到。
可选地，处理器601还用于：通过公式
Figure PCTCN2017117466-appb-000024
生成基础序列；其中，S 1表示基础序列，β表示第一预设权重值，
Figure PCTCN2017117466-appb-000025
表示根序列的编号为u 0的x u(n)序列的offset位循环移位，且u 0与offset均根据序列信息配置得到。
可选地，处理器601还用于：通过将发送端的额外信息映射到至少两个ZC序列，生成扩展序列；或者，通过将发送端的额外信息映射到一个ZC序列， 生成扩展序列。
可选地，处理器601还用于：通过公式
Figure PCTCN2017117466-appb-000026
生成扩展序列；其中，S 2表示扩展序列，K表示扩展序列所包含的子序列的个数，K＝N/Q，N表示额外信息的比特数，Q表示QAM调制的调制阶数，k表示子序列的编号，β k表示第k个子序列的第二预设权重值，
Figure PCTCN2017117466-appb-000027
表示根序列的编号为w 0(k)的x u(n)序列的offset k位循环移位，
Figure PCTCN2017117466-appb-000028
A 0(m)表示第m个子序列携带的发送端的额外信息，W km表示一个K×K矩阵，且K、Q、offset k以及W km均根据序列信息配置得到。
可选地，处理器601还用于：根据预先存储的额外信息的格式与ZC序列的编号的对应关系，确定发送端的额外信息的格式对应的ZC序列的编号k；通过公式S 3＝β k·y k(n，offset k)生成扩展序列；其中，S 3表示扩展序列，y k(n)表示K个ZC序列中第k个ZC序列，y k(n，offset k)表示y k(n)的offset k位循环移位，β k表示第三预设权重值，K＝2 N，N表示发送端的额外信息的比特数，且K个ZC序列、offset k、β k均根据序列信息配置得到。
可选地，处理器601还用于：根据预先存储的额外信息的格式与ZC序列的编号的对应关系，确定发送端的额外信息的第一部分额外信息的格式对应的ZC序列的编号k；根据预先存储的额外信息的格式与星座符号的对应关系，确定发送端的额外信息中除第一部分额外信息以外的第二部分额外信息的格式对应的星座符号s 2；通过公式S 4＝β k·s 2·y k(n，offset k)生成扩展序列；其中，S 4表示扩展序列，y k(n)表示K个ZC序列中第k个ZC序列，y k(n，offset k)表示y k(n)的offset k位循环移位，
Figure PCTCN2017117466-appb-000029
N 1表示第一部分额外信息的比特数，β k表示第四预设权重值，且K个ZC序列、offset k、β k均根据序列信息配置得到。
可选地，处理器601还用于：在第一预设时刻发送基础序列；在第二预设时刻发送扩展序列。
可选地，处理器601还用于：在第一预设频域子带发送基础序列，并同时在第二预设时刻发送扩展序列。
终端600能够实现本公开一些实施例中发送端实现的各个过程，为避免重复，这里不再赘述。
在本公开的一些实施例中，终端通过在随机接入过程中向接收端发送，包括携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列的PRACH序列，并接收接收端发送的响应消息，使发送端在随机接入过程中发送的PRACH序列携带更多的有用信息。
若发送端为网络设备，为了更好的实现上述目的，如图7所示，本公开的一些实施例提供了一种网络设备，该网络设备包括：处理器700；通过总线接 口与所述处理器700相连接的存储器720，以及通过总线接口与处理器700相连接的收发机710；所述存储器720用于存储所述处理器在执行操作时所使用的程序和数据；通过所述收发机710发送数据信息或者导频，还通过所述收发机710接收上行控制信道；当处理器700调用并执行所述存储器720中所存储的程序和数据，具体用于获取物理随机接入信道PRACH序列；其中，PRACH序列包括：携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列；将PRACH序列发送给接收端；接收接收端发送的响应消息。
可选的，处理器700还用于：根据ZC序列，生成基础序列；根据ZC序列，生成扩展序列；将扩展序列叠加至基础序列，生成PRACH序列。
其中，ZC序列
Figure PCTCN2017117466-appb-000030
x u(n)表示ZC序列，u表示根序列的编号，N ZC表示序列长度，n表示序列的第n个采样点，j表示虚数单位，且u与N ZC均根据接收端预先下发的序列信息配置得到。
可选的，处理器700还用于：通过公式
Figure PCTCN2017117466-appb-000031
生成基础序列；其中，S 1表示基础序列，β表示第一预设权重值，
Figure PCTCN2017117466-appb-000032
表示根序列的编号为u 0的x u(n)序列的offset位循环移位，且u 0与offset均根据序列信息配置得到。
可选的，处理器700还用于：通过将发送端的额外信息映射到至少两个ZC序列，生成扩展序列；或者，通过将发送端的额外信息映射到一个ZC序列，生成扩展序列。
可选的，处理器700还用于：通过公式
Figure PCTCN2017117466-appb-000033
生成扩展序列；其中，S 2表示扩展序列，K表示扩展序列所包含的子序列的个数，K＝N/Q，N表示额外信息的比特数，Q表示QAM调制的调制阶数，k表示子序列的编号，β k表示第k个子序列的第二预设权重值，
Figure PCTCN2017117466-appb-000034
表示根序列的编号为w 0(k)的x u(n)序列的offset k位循环移位，
Figure PCTCN2017117466-appb-000035
A 0(m)表示第m个子序列携带的发送端的额外信息，W km表示一个K×K矩阵，且K、Q、offset k以及W km均根据序列信息配置得到。
可选的，处理器700还用于：根据预先存储的额外信息的格式与ZC序列的编号的对应关系，确定发送端的额外信息的格式对应的ZC序列的编号k；通过公式S 3＝β k·y k(n，offset k)生成扩展序列；其中，S 3表示扩展序列，y k(n)表示K个ZC序列中第k个ZC序列，y k(n，offset k)表示y k(n)的offset k位循环移位，β k表示第三预设权重值，K＝2 N，N表示发送端的额外信息的比特数，且K个ZC 序列、offset k、β k均根据序列信息配置得到。
可选的，处理器700还用于：根据预先存储的额外信息的格式与ZC序列的编号的对应关系，确定发送端的额外信息的第一部分额外信息的格式对应的ZC序列的编号k；根据预先存储的额外信息的格式与星座符号的对应关系，确定发送端的额外信息中除第一部分额外信息以外的第二部分额外信息的格式对应的星座符号s 2；通过公式S 4＝β k·s 2·y k(n，offset k)生成扩展序列；其中，S 4表示扩展序列，y k(n)表示K个ZC序列中第k个ZC序列，y k(n，offset k)表示y k(n)的offset k位循环移位，
Figure PCTCN2017117466-appb-000036
，N 1表示第一部分额外信息的比特数，β k表示第四预设权重值，且K个ZC序列、offset k、β k均根据序列信息配置得到。
可选的，处理器700还用于：在第一预设时刻发送基础序列；在第二预设时刻发送扩展序列。
可选的，处理器700还用于：在第一预设频域子带发送基础序列，并同时在第二预设时刻发送扩展序列。
收发机710，用于在处理器700的控制下接收和发送数据。
其中，在图7中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器700代表的一个或多个处理器和存储器720代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机710可以是多个元件，即包括发送机和收发机，提供用于在传输介质上与各种其他装置通信的单元。处理器700负责管理总线架构和通常的处理，存储器720可以存储处理器700在执行操作时所使用的数据。
这样，网络设备通过在随机接入过程中向接收端发送，包括携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列的PRACH序列，并接收接收端发送的响应消息，使发送端在随机接入过程中发送的PRACH序列携带更多的有用信息。
以上实施例分别就发送端侧对本公开的随机接入方法及发送端做了介绍说明，下面本实施例将结合附图和具体应用场景对接收端侧的随机接入方法做进一步介绍。
如图8所示，本公开的一些实施例提供了一种随机接入方法，应用于接收 端，该方法包括：
步骤801，接收发送端发送的物理随机接入信道PRACH序列。
其中，上述PRACH序列包括：携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列，其中，发送端的额外信息可以包括发送端的其他标识信息以及发送端的波束信息等，从而使得接收端在接收到PRACH序列时，能获得与发送端相关的更多的有用信息，便于后续针对该PRACH序列作出响应。需要说明的是，额外信息中的其他标识信息与基础序列携带的标识信息不同，但其都能用于标识上述发送端。
且在本公开的一些实施例中，上述接收端可以为终端，例如智能手机、平板电脑等，也可以为网络设备，例如基站、核心网控制节点等。当然若接收端为终端，那么发送端便为网络设备；而若接收端为网络设备，那么发送端便为终端。
步骤802，根据PRACH序列，向发送端发送响应消息。
其中，上述响应消息包括用于指示是否同意发送端接入的信息等。需要说明的是，该响应消息可与4G LTE的随机接入过程中的随机接入响应相同，且这对于本领域的技术人员而言属于公知常识，因此在此不进行过多赘述。
且在本公开的一些实施例中，上述步骤801的具体实现方式有三种。其中，第一种具体实现方式为：直接接收扩展序列与基础序列叠加在一起的PRACH序列。
其中，第二种具体实现方式为时分复用的方式，该方式具体包括如下步骤：首先在第一预设时刻接收基础序列；然后根据基础序列，进行信道估计，获得信道估计结果；最后根据获得的信道估计结果，在第二预设时刻接收扩展序列。其中，上述第一预设时刻与第二预设时刻是接收端与发送端预先协商的。
其中，第三种具体实现方式为频分复用，该方式具体包括如下步骤：首先在第一预设频域子带接收基础序列；然后根据基础序列，进行信道估计，获得信道估计结果；最后根据获得的信道估计结果，在第二预设频域子带接收扩展序列。其中，上述第一预设频域子带与第二预设频域子带是接收端与发送端预先协商的。
可见，在本公开的一些实施例中，通过接收包括携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列的PRACH序列，并根据该 PRACH序列向发送端发送响应消息，使发送端成功实现在随机接入过程中发送的PRACH序列携带更多的有用信息。
以上实施例详细介绍了不同场景下的随机接入方法，下面将结合图9与图10对与其对应的接收端做进一步介绍。
如图9至图10所示，本公开的一些实施例提供了一种接收端，该接收端900包括：
第二接收模块901，用于接收发送端发送的物理随机接入信道PRACH序列；其中，PRACH序列包括：携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列；
第二发送模块902，用于根据PRACH序列，向发送端发送响应消息。
其中，上述接收端900可以为终端，例如智能手机、平板电脑等，也可以为网络设备，例如基站、核心网控制节点等。当然若接收端为终端，那么发送端便为网络设备；而若接收端为网络设备，那么发送端便为终端。
可选的，第二接收模块901包括：
第一接收子模块9011，用于在第一预设时刻接收基础序列；
第一估计子模块9012，用于根据基础序列，进行信道估计，获得信道估计结果；
第二接收子模块9013，用于根据获得的信道估计结果，在第二预设时刻接收扩展序列。
可选的，第二接收模块901包括：
第三接收子模块9014，用于在第一预设频域子带接收基础序列；
第二估计子模块9015，用于根据基础序列，进行信道估计，获得信道估计结果；
第四接收子模块9016，用于根据获得的信道估计结果，在第二预设频域子带接收扩展序列。
在本公开的一些实施例中，接收端通过接收包括携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列的PRACH序列，并根据该PRACH序列向发送端发送响应消息，使发送端成功实现在随机接入过程中发送的PRACH序列携带更多的有用信息。
若接收端为网络设备，为了更好的实现上述目的，如图11所示，本公开 的一些实施例提供了一种网络设备，该网络设备1100包括：处理器1101、收发机1102、存储器1103、用户接口1104和总线接口，其中：
处理器1101，用于读取存储器1103中的程序，执行下列过程：
接收发送端发送的物理随机接入信道PRACH序列；其中，PRACH序列包括：携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列；根据PRACH序列，向发送端发送响应消息。
在图11中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1101代表的一个或多个处理器和存储器1103代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1102可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口1104还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1101负责管理总线架构和通常的处理，存储器1103可以存储处理器1101在执行操作时所使用的数据。
可选的，处理器1101还用于：在第一预设时刻接收基础序列；根据基础序列，进行信道估计，获得信道估计结果；根据获得的信道估计结果，在第二预设时刻接收扩展序列。
可选的，处理器1101还用于：在第一预设频域子带接收基础序列；根据基础序列，进行信道估计，获得信道估计结果；根据获得的信道估计结果，在第二预设频域子带接收扩展序列。
本公开一些实施例的网络设备通过接收包括携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列的PRACH序列，并根据该PRACH序列向发送端发送响应消息，使发送端成功实现在随机接入过程中发送的PRACH序列携带更多的有用信息。
若接收端为终端，为了更好的实现上述目的，如图12所示，本公开的一些实施例提供了一种终端，该终端1200可以为手机、平板电脑、个人数字助理(Personal Digital Assistant，PDA)、或车载电脑等。
图12中的终端1200包括射频(Radio Frequency，RF)电路1210、存储器 1220、输入单元1230、显示单元1240、处理器1260、音频电路1270、WiFi(Wireless Fidelity)模块1280和电源1290。
其中，输入单元1230可用于接收用户输入的数字或字符信息，以及产生与终端1200的用户设置以及功能控制有关的信号输入。具体地，本公开一些实施例中，该输入单元1230可以包括触控面板1231。触控面板1231，也称为触摸屏，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板1231上的操作)，并根据预先设定的程式驱动相应的连接装置。可选的，触控面板1231可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给该处理器1260，并能接收处理器1260发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板1231。除了触控面板1231，输入单元1230还可以包括其他输入设备1232，其他输入设备1232可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆等中的一种或多种。
其中，显示单元1240可用于显示由用户输入的信息或提供给用户的信息以及终端1200的各种菜单界面。显示单元1240可包括显示面板1241，可选的，可以采用LCD或有机发光二极管(Organic Light-Emitting Diode，OLED)等形式来配置显示面板1241。
应注意，触控面板1231可以覆盖显示面板1241，形成触摸显示屏，当该触摸显示屏检测到在其上或附近的触摸操作后，传送给处理器1260以确定触摸事件的类型，随后处理器1260根据触摸事件的类型在触摸显示屏上提供相应的视觉输出。
触摸显示屏包括应用程序界面显示区及常用控件显示区。该应用程序界面显示区及该常用控件显示区的排列方式并不限定，可以为上下排列、左右排列等可以区分两个显示区的排列方式。该应用程序界面显示区可以用于显示应用程序的界面。每一个界面可以包含至少一个应用程序的图标和/或widget桌面控件等界面元素。该应用程序界面显示区也可以为不包含任何内容的空界面。该常用控件显示区用于显示使用率较高的控件，例如，设置按钮、界面编号、滚动条、电话本图标等应用程序图标等。
其中处理器1260是终端1200的控制中心，利用各种接口和线路连接整个手机的各个部分，通过运行或执行存储在第一存储器1221内的软件程序和/或模块，以及调用存储在第二存储器1222内的数据，执行终端1200的各种功能和处理数据，从而对终端1200进行整体监控。可选的，处理器1260可包括一个或多个处理单元。
在本公开一些实施例中，通过调用存储该第一存储器1221内的软件程序和/或模块和/或该第二存储器1222内的数据，处理器1260用于接收发送端发送的物理随机接入信道PRACH序列；其中，PRACH序列包括：携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列；根据PRACH序列，向发送端发送响应消息。
可选地，处理器1260还用于：在第一预设时刻接收基础序列；根据基础序列，进行信道估计，获得信道估计结果；根据获得的信道估计结果，在第二预设时刻接收扩展序列。
可选地，处理器1260还用于：在第一预设频域子带接收基础序列；根据基础序列，进行信道估计，获得信道估计结果；根据获得的信道估计结果，在第二预设频域子带接收扩展序列。
可见，在本公开的一些实施例中，终端通过接收包括携带发送端的标识信息的基础序列以及携带发送端的额外信息的扩展序列的PRACH序列，并根据该PRACH序列向发送端发送响应消息，使发送端成功实现在随机接入过程中发送的PRACH序列携带更多的有用信息。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本公开的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如， 所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以权利要求的保护范围为准。

Claims (30)

  1. 一种随机接入方法，应用于发送端，其中，所述方法包括：
    获取物理随机接入信道PRACH序列；其中，所述PRACH序列包括：携带所述发送端的标识信息的基础序列以及携带所述发送端的额外信息的扩展序列；
    将所述PRACH序列发送给接收端；
    接收所述接收端发送的响应消息。
  2. 根据权利要求1所述的方法，其中，所述获取物理随机接入信道PRACH序列的步骤，包括：
    根据ZC序列，生成所述基础序列；
    根据所述ZC序列，生成所述扩展序列；
    将所述扩展序列叠加至所述基础序列，生成所述PRACH序列。
  3. 根据权利要求2所述的方法，其中，
    所述ZC序列
    Figure PCTCN2017117466-appb-100001
    x u(n)表示ZC序列，u表示根序列的编号，N ZC表示序列长度，n表示序列的第n个采样点，j表示虚数单位，且u与N ZC均根据所述接收端预先下发的序列信息配置得到。
  4. 根据权利要求3所述的方法，其中，所述根据ZC序列，生成所述基础序列的步骤，包括：
    通过公式
    Figure PCTCN2017117466-appb-100002
    生成所述基础序列；
    其中，S 1表示基础序列，β表示第一预设权重值，
    Figure PCTCN2017117466-appb-100003
    表示根序列的编号为u 0的x u(n)序列的offset位循环移位，且u 0与offset均根据所述序列信息配置得到。
  5. 根据权利要求3所述的方法，其中，所述根据所述ZC序列，生成所述扩展序列的步骤，包括：
    通过将所述发送端的额外信息映射到至少两个ZC序列，生成所述扩展序列；或者
    通过将所述发送端的额外信息映射到一个ZC序列，生成所述扩展序列。
  6. 根据权利要求5所述的方法，其中，所述通过将所述发送端的额外信息映射到至少两个ZC序列，生成所述扩展序列的步骤，包括：
    通过公式
    Figure PCTCN2017117466-appb-100004
    生成所述扩展序列；
    其中，S 2表示扩展序列，K表示扩展序列所包含的子序列的个数， K＝N/Q，N表示所述额外信息的比特数，Q表示QAM调制的调制阶数，k表示子序列的编号，β k表示第k个子序列的第二预设权重值，
    Figure PCTCN2017117466-appb-100005
    表示根序列的编号为w 0(k)的x u(n)序列的offset k位循环移位，
    Figure PCTCN2017117466-appb-100006
    A 0(m)表示第m个子序列携带的所述发送端的额外信息，W km表示一个K×K矩阵，且K、Q、offset k以及W km均根据所述序列信息配置得到。
  7. 根据权利要求5所述的方法，其中，所述通过将所述发送端的额外信息映射到一个ZC序列，生成所述扩展序列的步骤，包括：
    根据预先存储的额外信息的格式与ZC序列的编号的对应关系，确定所述发送端的额外信息的格式对应的ZC序列的编号k；
    通过公式S 3＝β k·y k(n，offset k)生成所述扩展序列；
    其中，S 3表示扩展序列，y k(n)表示K个ZC序列中第k个ZC序列，y k(n，offset k)表示y k(n)的offset k位循环移位，β k表示第三预设权重值，K＝2 N，N表示所述发送端的额外信息的比特数，且K个ZC序列、offset k、β k均根据所述序列信息配置得到。
  8. 根据权利要求5所述的方法，其中，所述通过将所述发送端的额外信息映射到一个ZC序列，生成所述扩展序列的步骤，包括：
    根据预先存储的额外信息的格式与ZC序列的编号的对应关系，确定所述发送端的额外信息的第一部分额外信息的格式对应的ZC序列的编号k；
    根据预先存储的额外信息的格式与星座符号的对应关系，确定所述发送端的额外信息中除所述第一部分额外信息以外的第二部分额外信息的格式对应的星座符号s 2；
    通过公式S 4＝β k·s 2·y k(n，offset k)生成所述扩展序列；
    其中，S 4表示扩展序列，y k(n)表示K个ZC序列中第k个ZC序列，y k(n，offset k)表示y k(n)的offset k位循环移位，
    Figure PCTCN2017117466-appb-100007
    N 1表示第一部分额外信息的比特数，β k表示第四预设权重值，且K个ZC序列、offset k、β k均根据所述序列信息配置得到。
  9. 根据权利要求1所述的方法，其中，所述将所述PRACH序列发送给接收端的步骤，包括：
    在第一预设时刻发送所述基础序列；
    在第二预设时刻发送所述扩展序列。
  10. 根据权利要求1所述的方法，其中，所述将所述PRACH序列发送给接收端的步骤，包括：
    在第一预设频域子带发送所述基础序列，并同时在第二预设时刻发送所述扩展序列。
  11. 一种发送端，包括：
    获取模块，用于获取物理随机接入信道PRACH序列；其中，所述PRACH序 列包括：携带所述发送端的标识信息的基础序列以及携带所述发送端的额外信息的扩展序列；
    第一发送模块，用于将所述PRACH序列发送给接收端；
    第一接收模块，用于接收所述接收端发送的响应消息。
  12. 根据权利要求11所述的发送端，其中，所述获取模块包括：
    第一生成子模块，用于根据ZC序列，生成所述基础序列；
    第二生成子模块，用于根据所述ZC序列，生成所述扩展序列；
    叠加子模块，用于将所述扩展序列叠加至所述基础序列，生成所述PRACH序列。
  13. 根据权利要求12所述的发送端，其中，
    所述ZC序列
    Figure PCTCN2017117466-appb-100008
    x u(n)表示ZC序列，u表示根序列的编号，N ZC表示序列长度，n表示序列的第n个采样点，j表示虚数单位，且u与N ZC均根据所述接收端预先下发的序列信息配置得到。
  14. 根据权利要求13所述的发送端，其中，所述第一生成子模块，具体用于通过公式
    Figure PCTCN2017117466-appb-100009
    生成所述基础序列；
    其中，S 1表示基础序列，β表示第一预设权重值，
    Figure PCTCN2017117466-appb-100010
    表示根序列的编号为u 0的x u(n)序列的offset位循环移位，且u 0与offset均根据所述序列信息配置得到。
  15. 根据权利要求13所述的发送端，其中，所述第二生成子模块包括：
    第一生成单元，用于通过将所述发送端的额外信息映射到至少两个ZC序列，生成所述扩展序列；或者
    第二生成单元，用于通过将所述发送端的额外信息映射到一个ZC序列，生成所述扩展序列。
  16. 根据权利要求15所述的发送端，其中，所述第一生成单元，具体用于通过公式
    Figure PCTCN2017117466-appb-100011
    生成所述扩展序列；
    其中，S 2表示扩展序列，K表示扩展序列所包含的子序列的个数，K＝N/Q，N表示所述额外信息的比特数，Q表示QAM调制的调制阶数，k表示子序列的编号，β k表示第k个子序列的第二预设权重值，
    Figure PCTCN2017117466-appb-100012
    表示根序列的编号为w 0(k)的x u(n)序列的offset k位循环移位，
    Figure PCTCN2017117466-appb-100013
    A 0(m)表示第m个子序列携带的所述发送端的额外信息，W km表示一个K×K矩 阵，且K、Q、offset k以及W km均根据所述序列信息配置得到。
  17. 根据权利要求15所述的发送端，其中，所述第二生成单元包括：
    第一确定子单元，用于根据预先存储的额外信息的格式与ZC序列的编号的对应关系，确定所述发送端的额外信息的格式对应的ZC序列的编号k；
    第一生成子单元，用于通过公式S 3＝β k·y k(n，offset k)生成所述扩展序列；
    其中，S 3表示扩展序列，y k(n)表示K个ZC序列中第k个ZC序列，y k(n，offset k)表示y k(n)的offset k位循环移位，β k表示第三预设权重值，K＝2 N，N表示所述发送端的额外信息的比特数，且K个ZC序列、offset k、β k均根据所述序列信息配置得到。
  18. 根据权利要求15所述的发送端，其中，所述第二生成单元包括：
    第二确定子单元，用于根据预先存储的额外信息的格式与ZC序列的编号的对应关系，确定所述发送端的额外信息的第一部分额外信息的格式对应的ZC序列的编号k；
    第三确定子单元，用于根据预先存储的额外信息的格式与星座符号的对应关系，确定所述发送端的额外信息中除所述第一部分额外信息以外的第二部分额外信息的格式对应的星座符号s 2；
    第二生成子单元，用于通过公式S 4＝β k·s 2·y k(n，offset k)生成所述扩展序列；
    其中，S 4表示扩展序列，y k(n)表示K个ZC序列中第k个ZC序列，y k(n，offset k)表示y k(n)的offset k位循环移位，
    Figure PCTCN2017117466-appb-100014
    N 1表示第一部分额外信息的比特数，β k表示第四预设权重值，且K个ZC序列、offset k、β k均根据所述序列信息配置得到。
  19. 根据权利要求11所述的发送端，其中，所述第一发送模块包括：
    第一发送子模块，用于在第一预设时刻发送所述基础序列；
    第二发送子模块，用于在第二预设时刻发送所述扩展序列。
  20. 根据权利要求11所述的发送端，其中，所述第一发送模块，具体用于在第一预设频域子带发送所述基础序列，并同时在第二预设时刻发送所述扩展序列。
  21. 一种随机接入方法，应用于接收端，其中，所述方法包括：
    接收发送端发送的物理随机接入信道PRACH序列；其中，所述PRACH序列包括：携带所述发送端的标识信息的基础序列以及携带所述发送端的额外信息的扩展序列；
    根据所述PRACH序列，向所述发送端发送响应消息。
  22. 根据权利要求21所述的方法，其中，所述接收发送端发送的物理随机接入信道PRACH序列的步骤，包括：
    在第一预设时刻接收所述基础序列；
    根据所述基础序列，进行信道估计，获得信道估计结果；
    根据获得的信道估计结果，在第二预设时刻接收所述扩展序列。
  23. 根据权利要求21所述的方法，其中，所述接收发送端发送的物理随机接入信道PRACH序列的步骤，包括：
    在第一预设频域子带接收所述基础序列；
    根据所述基础序列，进行信道估计，获得信道估计结果；
    根据获得的信道估计结果，在第二预设频域子带接收所述扩展序列。
  24. 一种接收端，包括：
    第二接收模块，用于接收发送端发送的物理随机接入信道PRACH序列；其中，所述PRACH序列包括：携带所述发送端的标识信息的基础序列以及携带所述发送端的额外信息的扩展序列；
    第二发送模块，用于根据所述PRACH序列，向所述发送端发送响应消息。
  25. 根据权利要求24所述的接收端，其中，所述第二接收模块包括：
    第一接收子模块，用于在第一预设时刻接收所述基础序列；
    第一估计子模块，用于根据所述基础序列，进行信道估计，获得信道估计结果；
    第二接收子模块，用于根据获得的信道估计结果，在第二预设时刻接收所述扩展序列。
  26. 根据权利要求24所述的接收端，其中，所述第二接收模块包括：
    第三接收子模块，用于在第一预设频域子带接收所述基础序列；
    第二估计子模块，用于根据所述基础序列，进行信道估计，获得信道估计结果；
    第四接收子模块，用于根据获得的信道估计结果，在第二预设频域子带接收所述扩展序列。
  27. 一种发送端，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如权利要求1至10中任一项所述的随机接入方法中的步骤。
  28. 一种接收端，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如权利要求21至23中任一项所述的随机接入方法中的步骤。
  29. 一种计算机可读存储介质，其中，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现如权利要求1至10中任一项所 述的随机接入方法中的步骤。
  30. 一种计算机可读存储介质，其中，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现如权利要求21至23中任一项所述的随机接入方法中的步骤。
PCT/CN2017/117466 2016-12-30 2017-12-20 一种随机接入方法、发送端及接收端 Ceased WO2018121376A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201611261970.2 2016-12-30
CN201611261970.2A CN108271271B (zh) 2016-12-30 2016-12-30 一种随机接入方法、发送端及接收端

Publications (1)

Publication Number Publication Date
WO2018121376A1 true WO2018121376A1 (zh) 2018-07-05

Family

ID=62706881

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/117466 Ceased WO2018121376A1 (zh) 2016-12-30 2017-12-20 一种随机接入方法、发送端及接收端

Country Status (2)

Country Link
CN (1) CN108271271B (zh)
WO (1) WO2018121376A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024169817A1 (zh) * 2023-02-17 2024-08-22 维沃移动通信有限公司 低功耗信号的生成方法、装置、终端及网络侧设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3895498B1 (en) 2019-01-09 2024-03-13 Huawei Technologies Co., Ltd. Client device and network access node for transmitting and receiving a random access preamble
CN112822786B (zh) * 2019-10-31 2024-11-01 华为技术有限公司 一种数据处理方法及其装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008053971A1 (en) * 2006-11-02 2008-05-08 Panasonic Corporation Zadoff-chu sequence allocation method in cellular wireless communication system
WO2008155907A1 (ja) * 2007-06-19 2008-12-24 Panasonic Corporation 系列割当方法および無線移動局装置
CN101771649A (zh) * 2009-01-07 2010-07-07 大唐移动通信设备有限公司 一种传输物理随机接入信道的方法及网络侧设备
CN101855934A (zh) * 2007-09-12 2010-10-06 北方电讯网络有限公司 用于上行链路信令的系统和方法
CN104254092A (zh) * 2013-06-26 2014-12-31 华为技术有限公司 干扰检测方法、装置和系统
CN104602320A (zh) * 2013-10-30 2015-05-06 黑莓有限公司 用于在具有部分覆盖的无线网络中发现设备的方法和系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101094027B (zh) * 2006-06-20 2010-11-03 上海无线通信研究中心 隐含用户控制信息的签名序列发送结构的发射和接收方法
CN101202582B (zh) * 2006-12-11 2011-08-03 电信科学技术研究院 非同步随机接入的隐含信息携带方法和装置
CN101203029B (zh) * 2006-12-11 2010-11-10 大唐移动通信设备有限公司 一种随机接入的实现方法及基站
CN106572543B (zh) * 2012-02-15 2020-10-23 华为技术有限公司 随机接入方法、基站及用户设备
CN104581983A (zh) * 2015-02-11 2015-04-29 北京邮电大学 一种随机接入方法、装置及系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008053971A1 (en) * 2006-11-02 2008-05-08 Panasonic Corporation Zadoff-chu sequence allocation method in cellular wireless communication system
WO2008155907A1 (ja) * 2007-06-19 2008-12-24 Panasonic Corporation 系列割当方法および無線移動局装置
CN101855934A (zh) * 2007-09-12 2010-10-06 北方电讯网络有限公司 用于上行链路信令的系统和方法
CN101771649A (zh) * 2009-01-07 2010-07-07 大唐移动通信设备有限公司 一种传输物理随机接入信道的方法及网络侧设备
CN104254092A (zh) * 2013-06-26 2014-12-31 华为技术有限公司 干扰检测方法、装置和系统
CN104602320A (zh) * 2013-10-30 2015-05-06 黑莓有限公司 用于在具有部分覆盖的无线网络中发现设备的方法和系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024169817A1 (zh) * 2023-02-17 2024-08-22 维沃移动通信有限公司 低功耗信号的生成方法、装置、终端及网络侧设备

Also Published As

Publication number Publication date
CN108271271A (zh) 2018-07-10
CN108271271B (zh) 2019-12-31

Similar Documents

Publication Publication Date Title
CN109286968B (zh) 一种盲检测参数获取方法、相关设备及系统
JP2020505822A5 (zh)
EP2658304A1 (en) Setting an Optimal Ping Interval
JP7073525B2 (ja) 物理アップリンク制御チャネルリソースの決定方法及び通信装置
CN111836304B (zh) 一种信息传输方法及终端
CN113300846A (zh) 签名方法、终端设备及网络设备
KR20200089695A (ko) 직교 주파수 분할 다중화 부호 생성 방법 및 통신 기기
WO2023217030A1 (zh) 感知测量的处理方法及设备
WO2018121376A1 (zh) 一种随机接入方法、发送端及接收端
CN108809561A (zh) 一种同步信号块的传输方法、网络设备及用户设备
CN109413756B (zh) 一种随机接入方法及装置
US20170149934A1 (en) Method, device and system for data cross-domain request
CN115442004B (zh) 上行数据传输方法、装置、终端及介质
CN108809558A (zh) 一种同步信号块的传输方法、网络设备及用户设备
WO2019047786A1 (zh) 免授权传输方法、基站和终端
WO2019024890A1 (zh) 数据传输方法、数据检测方法及装置
US20200351140A1 (en) Data processing method and intelligent terminal based on ofdm system
CN108282890B (zh) 一种资源调度处理方法、网络侧设备及移动终端
KR102908930B1 (ko) 피드백 정보를 전송하는 방법 및 장치
WO2023025000A1 (zh) 扩频方法、装置、通信设备及可读存储介质
KR101355879B1 (ko) 사용자 장비에 통신을 제공하기 위한 방법 및 디바이스
CN109309962B (zh) 一种传输方法、移动终端及网络侧设备
EP3285542A1 (en) Service processing method and terminal
JP2017512425A (ja) データ伝送・データ受信の検出方法及び基地局及びｕｅ
JP7763332B2 (ja) リソース決定方法、装置、端末及び可読記憶媒体

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17886196

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17886196

Country of ref document: EP

Kind code of ref document: A1