WO2018028338A1 - 一种承载标识信息的方法及装置 - Google Patents

一种承载标识信息的方法及装置 Download PDF

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Publication number
WO2018028338A1
WO2018028338A1 PCT/CN2017/091167 CN2017091167W WO2018028338A1 WO 2018028338 A1 WO2018028338 A1 WO 2018028338A1 CN 2017091167 W CN2017091167 W CN 2017091167W WO 2018028338 A1 WO2018028338 A1 WO 2018028338A1
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WO
WIPO (PCT)
Prior art keywords
identification information
bit
information
fixed bit
fixed
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Application number
PCT/CN2017/091167
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English (en)
French (fr)
Inventor
罗禾佳
周悦
李榕
陈莹
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP17838602.5A priority Critical patent/EP3484126B1/en
Priority to JP2019507150A priority patent/JP6803969B2/ja
Priority to PCT/CN2017/095459 priority patent/WO2018028472A1/zh
Publication of WO2018028338A1 publication Critical patent/WO2018028338A1/zh
Priority to US16/265,224 priority patent/US10892850B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block codes
    • H04L1/0058—Block-coded modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a method and an apparatus for carrying identity information.
  • a base station when a base station schedules a terminal, the base station often identifies different terminals by using identification information, and the base station sends the scheduling information by means of the information information scrambling.
  • the radio network temporary identifier (English: Radio Network Temporary Identifier, abbreviation: RNTI) is an identification information of a base station to a terminal in a Long Term Evolution (LTE) system.
  • the existing RNTI is 16 bits in length.
  • the base station in the encoding process of the physical downlink control channel (English: Physical Downlink Control Channel, PDCCH), the base station first performs 16 downlink control information (Downlink Control Information, DCI) to be sent.
  • DCI Downlink Control Information
  • the bit length of the Cyclic Redundancy Check (English: Cyclical Redundancy Check, abbreviation: CRC) code, the information formed after the encoding contains DCI information and 16-bit CRC information, and then the base station compares the 16-bit RNTI information with the 16-bit CRC information.
  • CRC Cyclical Redundancy Check
  • XOR exclusive OR, abbreviation: XOR
  • the RNTI scrambles the CRC in the above-mentioned existing system, the length of the RNTI is limited to 16 bits, and the number of terminals that can be identified by the 16-bit RNTI is only 65536. Obviously, the RNTI scrambling method cannot meet the future mass. Application requirements for access.
  • the embodiment of the present invention provides a method and a device for carrying identifier information, which are used to solve the problem that the number of terminals that can be identified by the bearer mode of the existing identifier information is low.
  • the first aspect provides a method for carrying the identifier information, the method includes: the base station determines a bit position of the to-be-coded bit that can be used to carry the identifier information, and carries the identifier information in the bit position, where the identifier is to be carried
  • the bit to be encoded of the information is encoded by a polar Polar code encoding method, and the encoded Polar code is sent to the terminal.
  • the bit position that can be used to carry the identifier information includes a location of a fixed bit, where the fixed bit is used for error correction by the terminal in the decoding process, and the identifier information is used to identify the terminal.
  • the length of the bit that can carry the identification information can be extended, and the length of the identifier information that can be represented can be increased without introducing any other overhead, and the number of terminals that can be identified by the identifier information is increased. Support is provided to meet the needs of future application scenarios for mass access.
  • the base station carries the identification information in the bit position, and may pass The following manner is implemented: when the bit position is empty, the identifier information is placed in the bit position; or, when the bit position is not empty, the identifier information is carried in a scrambled manner In the bit position.
  • the identification information is carried in a scrambled manner In the bit position.
  • the to-be-coded bit includes an information bit, where the information bit includes a source information bit, and a cyclic redundancy check CRC information bit corresponding to the source information bit; The location of the CRC information bits is included.
  • the base station carries the identifier information in the bit position, which may be implemented by: the base station carrying the identifier information in the bit position according to a set mapping relationship. .
  • the base station carries the identifier information in the bit position according to a set mapping relationship, which may be implemented by: the base station scrambling the first part of the identifier information to In the CRC information bit; the base station scrambles the second part of the identification information into the fixed bit, or places the second part when the fixed bit position is empty a location of the fixed bit; wherein the first portion and the second portion are different, or the first portion and the second portion intersect.
  • the identification information is scrambled into the CRC information, which can improve the reliability and improve the decoding accuracy of the terminal.
  • more identification information is carried in the fixed bits, and the bit length of the bearer identification information bits can be widened.
  • the base station carries the identifier information in the bit position according to the set mapping relationship, and may also be implemented in the following manner: the base station scrambles all the identifier information to the location In the fixed bit; or, when the position of the fixed bit is empty, all of the identification information is placed at the position of the fixed bit.
  • the base station carries the identifier information in the bit position according to the set mapping relationship, and may also be implemented by: the base station scrambling the first part of the identifier information Going to the CRC information bit; the base station sequentially scrambles the second part of the identification information into the fixed bit in a manner of repeating several times, or when the position of the fixed bit is empty, Positioning the second portion in the position of the fixed bit in a manner of repeating several times; wherein the first portion and the second portion are different, or the first portion and the second portion intersect . In this way, the reliability of the identity information bearer is improved by repeating the bearer.
  • the base station carries the identifier information in the bit position, which may be implemented by: the base station sorting according to the reliability of the bit position, and sequentially selecting in the bit position.
  • the bit position of the top reliability carries the identification information.
  • the base station carries part or all of the identifier information in the location of the fixed bit, which may be implemented by: the base station repeating part or all of the identifier information
  • the secondary mode is carried in the position of the fixed bit, wherein the number of repeated bearers of the identification information is sequentially increased according to the order of the position reliability of the fixed bits from high to low. In this way, the identification information carried in the position of the fixed bit having low reliability can be improved by the method of repeating the number of times.
  • the identification information is an RNTI.
  • the identification information is a serial number of the terminal or a group number of the terminal group.
  • a second aspect provides a method for carrying identity information, where the method includes: receiving, by a terminal, a coded polarity Polar code sent by a base station, determining a location of a fixed bit in the Polar code; and determining, by the terminal, the identifier information Part or all of the location is carried in the location of the fixed bit, and the terminal decodes the Polar code according to a fixed bit of the bearer identification information, where the identifier information is used to identify the terminal.
  • the bit length of the identification information can increase the length of the identifier information that can be represented without introducing any other overhead, and increase the number of terminals that can be identified by the identifier information, so as to adapt to the application scenario of mass access in the future. Support is provided by the requirements.
  • the terminal carries part or all of the identification information in the location of the fixed bit, which may be implemented by: the terminal scrambling part or all of the identification information to In the fixed bit; or, when the position of the fixed bit is empty, part or all of the identification information is placed at the position of the fixed bit.
  • the terminal carries part or all of the identification information in the location of the fixed bit, which may be implemented by: the terminal scrambling part or all of the identification information to In the fixed bit; or, when the position of the fixed bit is empty, part or all of the identification information is placed at the position of the fixed bit.
  • the terminal carries part or all of the identifier information in the location of the fixed bit, which may be implemented by: the terminal repeating part or all of the identifier information
  • the second mode is sequentially scrambled into the fixed bit; or, when the position of the fixed bit is empty, part or all of the identification information is sequentially placed at the position of the fixed bit in a manner of repeating several times .
  • the identification information is an RNTI.
  • the identification information is a serial number of the terminal or a group number of the terminal group.
  • an apparatus for carrying identification information having a function of implementing base station behavior in any of the possible aspects of the first aspect and the first aspect described above.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus for carrying the identification information includes: a determining unit, configured to determine a bit position in the to-be-coded bit that can be used to carry the identification information, where the bit position that can be used to carry the identification information includes a fixed bit Position, the fixed bit is used for the terminal to perform error correction in the decoding process, the identifier information is used to identify the terminal, and the bearer unit is configured to carry the identifier information in the bit position determined by the determining unit And a coding unit, configured to: encode the to-be-coded bit that carries the identifier information by using a polar Polar code coding manner; and send, by the sending unit, the Polar code encoded by the coding unit to the terminal.
  • the length of the bit that can carry the identification information can be extended, and the length of the identifier information that can be represented can be increased without introducing any other overhead, and the number of terminals that can be identified by the identifier information is increased. Support is provided to meet the needs of future application scenarios for mass access.
  • the bearer unit is configured to: when the bit position is empty, place the identification information in the bit position; or, when the bit position is not empty, The identification information is carried in the bit position in a scrambled manner. In this way, by directly using the identification information as a fixed bit, not only the original error correction purpose of the fixed bit but also the position of the fixed bit can be used to carry the identification information.
  • the to-be-coded bit includes an information bit, where the information bit includes a source information bit, and a cyclic redundancy check CRC information bit corresponding to the source information bit; The location of the CRC information bits is included.
  • the bearer unit is configured to: carry the identifier information in the bit position according to a set mapping relationship.
  • the bearer unit is further configured to: scramble the first part of the identification information into the CRC information bit; scramble the second part of the identification information to the fixed Or in the bit, or when the position of the fixed bit is empty, placing the second portion at the position of the fixed bit; wherein the first portion and the second portion are different, or the A portion intersects with the second portion.
  • the identification information is scrambled In the CRC information, the reliability can be improved, and the decoding accuracy of the terminal can be improved. On this basis, more identification information is carried in fixed bits, and the bit length of the bearer identification information bits can be widened.
  • the bearer unit is further configured to: scramble all of the identification information into the fixed bit; or, when the position of the fixed bit is empty, the identifier information is All are placed at the position of the fixed bit.
  • the bearer unit is further configured to: scramble the first part of the identification information into the CRC information bit; and repeat the second part of the identification information in a manner of repeating several times And scrambling into the fixed bits in sequence, or, when the position of the fixed bit is empty, sequentially placing the second portion in a position of the fixed bit in a manner of repeating several times; wherein, the A portion and the second portion are different, or the first portion and the second portion intersect. In this way, the reliability of the identity information bearer is improved by repeating the bearer.
  • the bearer unit is further configured to: the base station sorts according to the reliability of the bit position, and sequentially selects a bit position with a higher reliability in the bit position to carry the identifier information.
  • the identification information is an RNTI.
  • the identification information is a serial number of the terminal or a group number of the terminal group.
  • an apparatus for carrying identification information having a function of implementing terminal behavior in any of the possible aspects of the second aspect and the second aspect described above.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus for carrying the identification information includes: a receiving unit, configured to receive the encoded polar Polar code sent by the base station, determine a location of the fixed bit in the Polar code, and a carrying unit, configured to: Part or all of the identification information is carried in the location of the fixed bit received by the receiving unit, the identifier information is used to identify the device, and the decoding unit is configured to pair the Polar code according to a fixed bit of the bearer identification information. Perform decoding. In this way, the length of the bit that can carry the identification information can be extended, and the length of the identifier information that can be represented can be increased without introducing any other overhead, and the number of terminals that can be identified by the identifier information is increased. Support is provided to meet the needs of future application scenarios for mass access.
  • the bearer unit is configured to: scramble part or all of the identification information into the fixed bit; or, when the position of the fixed bit is empty, the identifier information Part or all of it is placed at the position of the fixed bit. In this way, by directly using the identification information as a fixed bit, not only the original error correction purpose of the fixed bit but also the position of the fixed bit can be used to carry the identification information.
  • the bearer unit is configured to: sequentially scramble some or all of the identification information into the fixed bit in a manner of repeating several times; or, at the position of the fixed bit is empty At a time, part or all of the identification information is sequentially placed at the position of the fixed bit in a manner of repeating several times.
  • the identification information is an RNTI.
  • the identification information is a serial number of the terminal or a group number of the terminal group.
  • an apparatus for carrying identification information having a function of implementing base station behavior in any of the possible aspects of the first aspect and the first aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the device carrying the identification information includes a transceiver, a processor, a memory, a transceiver, and a memory, all connected to the processor, wherein the memory stores a set of programs, and the processor is used to call Said
  • the program stored in the memory causes the device carrying the identification information to perform the method described in any one of the first aspect or the first aspect.
  • an apparatus for carrying identification information having a function of implementing base station behavior in any of the possible aspects of the second aspect and the second aspect described above.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the device carrying the identification information includes a transceiver, a processor, a memory, a transceiver, and a memory, all connected to the processor, wherein the memory stores a set of programs, and the processor is used to call The program stored in the memory causes the device carrying the identification information to perform the method as described in any one of the second aspect or the second aspect.
  • the method and device for carrying the identification information encodes the coded bit by using the encoding method of the Polar code.
  • the identifier information is carried in the bit position including the position of the fixed bit in the Polar code.
  • the method can increase the length of the identifier information that can be represented without introducing any other overhead, and increase the number of terminals that can be identified by the identifier information, and provide support for adapting to the application scenarios of mass access in the future. .
  • FIG. 1 is a schematic diagram of a PDCCH encoding process in the prior art
  • FIG. 2 is a schematic structural diagram of a system in an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a Polar code encoding manner in an embodiment of the present application.
  • FIG. 5 is a second flowchart of a method for carrying identifier information in an embodiment of the present application
  • FIG. 6 is a schematic diagram of a PDCCH encoding process in an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a manner of carrying an RNTI in an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a PDCCH decoding process in an embodiment of the present application.
  • FIG. 9 is a second schematic diagram of a manner of carrying an RNTI according to an embodiment of the present application.
  • FIG. 9b is a third schematic diagram of a manner of carrying an RNTI according to an embodiment of the present application.
  • FIG. 9c is a fourth schematic diagram of a manner of carrying an RNTI according to an embodiment of the present application.
  • FIG. 9 is a fifth schematic diagram of a manner of carrying an RNTI according to an embodiment of the present application.
  • 9e is a sixth schematic diagram of a manner of carrying an RNTI in the embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a Polarization Polarization in the embodiment of the present application.
  • FIG. 11 is a structural diagram of an apparatus for carrying identification information in an embodiment of the present application.
  • FIG. 12 is a second structural diagram of an apparatus for carrying identification information in an embodiment of the present application.
  • FIG. 13 is a third structural diagram of an apparatus for carrying identification information in an embodiment of the present application.
  • FIG. 14 is a fourth structural diagram of an apparatus for carrying identification information in an embodiment of the present application.
  • 15 is a schematic structural diagram of a system chip in an embodiment of the present application.
  • FIG. 16 is a second schematic structural diagram of a system chip in the embodiment of the present application.
  • the embodiment of the present application provides a method and a device for carrying the identifier information, and the coded manner of the polar code (ie, the Polar code) is used to process the coded bit.
  • Encoding ie, bit
  • the length of the identifier information that can be characterized can be increased without introducing any other overhead. It also increases the number of terminals that can be identified by the identification information, and provides support for the application scenarios of the future massive access.
  • the system architecture applied in the embodiment of the present application includes a base station 201 and a terminal 202.
  • Base station 201 is a device deployed in a wireless access network to provide wireless communication functionality to terminal 202.
  • the base station 201 can include various forms of macro base stations, micro base stations, relay stations, access points, and the like. It can be applied in systems with different radio access technologies, such as in LTE systems, or 5G communication systems, and the like, in more possible communication systems.
  • the base station 201 may also be another network device having a base station function. In particular, it may also be a terminal that functions as a base station in a terminal-to-device (English: Device-to-Device, abbreviation: D2D) communication.
  • a terminal-to-device English: Device-to-Device, abbreviation: D2D
  • the terminal 202 can include various handheld devices having infinite communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem, and various forms of user equipment (English: User Equipment, abbreviation: UE) , mobile station (English: Mobile Station, abbreviation: MS) and so on.
  • user equipment English: User Equipment, abbreviation: UE
  • MS Mobile Station
  • the coding mode adopted in the embodiment of the present application is a Polar code coding mode, and the Polar code coding mode is specifically described below.
  • the Polar code encoding method has the characteristics of high performance, low complexity, and flexible rate matching.
  • an 8x8 Polar code coding matrix is shown, in which the input bits to be coded are represented by vectors (0, 0, 0, U4, 0, U6, U7, U8), encoded by the coding matrix, and encoded.
  • the bits are represented by vectors (Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8).
  • the bit vector to be encoded can be divided into two parts, one part being an information bit, which is labeled as Data in FIG. 3, such as U 4 , U 6 , U 7 , U 8 ; a part is a fixed bit, which is marked as frozen in FIG. 3 .
  • the information bits only need to be known by the transmitting end, and the fixed bits need to be known to both the transmitting end and the receiving end, and the fixed bits play the role of error correction in the decoding process of the receiving end, in order to improve the information bit position translation.
  • the probability of success of the code due to the polarization effect of the Polar code, the reliability of each bit in the bits to be encoded exhibits polarization characteristics, and the error probabilities of different bit positions are different.
  • the sorting sequence is labeled Rank in Figure 3.
  • the sorting list cites the order of reliability of different bit positions. The smaller the sorting label, the higher the reliability. In general, selecting information bits at a location with higher reliability helps to improve decoding performance.
  • the method for carrying the identifier information is as follows.
  • Step 401 The base station determines a bit position in the to-be-coded bit that can be used to carry the identification information.
  • the bit position that can be used to carry the identification information includes a position of the fixed bit, and the fixed bit is used for error correction by the terminal in the decoding process;
  • the bit to be encoded includes the information bit, and the information bit includes the source information bit, and the source information.
  • Corresponding CRC information bits optionally, locations in the bit positions that can be used to carry the identification information, which may also include CRC information bits;
  • Step 402 The base station carries the identification information in a bit position that can be used to carry the identification information.
  • the identification information is used to identify the terminal.
  • the identification information is RNTI.
  • the base station when the bit position is empty, places the identifier information in the above manner in an explicit bearer manner. Or, when the bit position is not empty, the identification information is carried in the bit position in an implicit bearer manner, and the implicit bearer is in a scrambling manner.
  • the fixed bit is used for the terminal to perform error correction during the decoding process, and the decoding success probability of the information bit position is improved.
  • the base station and the terminal need to negotiate the location of the fixed bit in advance, and the terminal needs to know the content in the fixed bit. Therefore, some or all of the identification information can be directly placed at a position where the fixed bit is empty, as a fixed bit.
  • the base station carries the identifier information in the bit position according to the set mapping relationship.
  • mapping relationships may be included, but are not limited to.
  • the base station scrambles the first part of the identification information into the CRC information bits, scrambles the second part of the identification information into the fixed bits, or, when the fixed bit position is empty, displays the second part
  • the mode of carrying is placed at a fixed bit position; wherein the first part and the second part are different, or the first part and the second part have an intersection.
  • the base station scrambles all of the identification information into the fixed bits, or, when the fixed bit position is empty, places all the identification information in the position of the fixed bit in an explicit bearer manner.
  • the base station may perform scrambling without using the CRC information bits.
  • the identification information may be scrambled into the CRC information bits, that is, repeated scrambling.
  • the base station scrambles the first part of the identification information into the CRC information bits
  • the base station sequentially scrambles the second part of the identification information into the fixed bits in a manner of repeating the number of times, or, when the position of the fixed bits is empty, sequentially places the second part in fixed bits in a manner of repeating several times. position. Wherein the first part and the second part are different, or the first part and the second part have an intersection.
  • the number of repeated bearers of the identification information is sequentially increased according to the order of the position reliability of the fixed bits from high to low.
  • the identification information is carried in the fixed bit position with the highest reliability, and the identification information is carried in the secondary position of the second highest reliability, and the identification information is carried in the repeated three times.
  • the sorting manner of the fixed bits may not be limited to the foregoing manner of sorting according to reliability, for example, may also be sorted according to polarization weights and the like. the way.
  • the method of polarizing weight refers to a method of determining the sorting according to the structural characteristics of the Polar code encoding matrix, and one of the methods is as follows:
  • N the sequence number of the bit to be coded is N values starting from 0 to (N-1).
  • 0 is ⁇ 000>
  • number 1 is recorded as ⁇ 001>
  • serial number 2 is recorded as ⁇ 010>, and so on.
  • the larger the number of W the higher the ranking, and the higher the "reliability", the smaller the rank number corresponding to Figure 3.
  • the base station scrambles the identification information into the fixed bit, or when the base station places the identification information in the position of the fixed bit, selecting a bit position with a higher reliability in the fixed bit position for scrambling or placing, This can improve the accuracy of the terminal decoding.
  • Step 403 The base station encodes the to-be-coded bit that carries the identifier information in a Polar code encoding manner, and sends the encoded Polar code to the terminal.
  • step 402 one possible implementation flow is as follows: 1)-4):
  • the base station first performs CRC encoding on the source information bits, and the encoded information bits include source information bits and CRC information bits;
  • the base station scrambles the identification information into the CRC information bits
  • the length of the identification information may be greater than the length of the CRC information bit.
  • the length of the identification information is represented by K
  • the length of the CRC information bit is represented by L
  • the first part of the identification information is L in length.
  • the base station serially connects the source information bits and the scrambled CRC information bits to form the serialized information bits
  • the base station carries the second part of the identification information at the location of the fixed bits.
  • the second part is placed directly at the position of the fixed bit, that is, the second part is taken as a fixed bit. If the fixed bit position is not empty, ie there is a fixed bit, the second part can be scrambled to a fixed bit.
  • step 402 may have multiple possible implementation processes.
  • the main idea is that the bit position for carrying the identification information is composed of the position of the CRC information bit and the position of the fixed bit, and is used to carry the identification information.
  • the bit position is obviously widened compared to the existing position of the CRC information bits for carrying the identification information, that is, the length of the identification information that can be carried by the bit to be encoded is broadened.
  • the bit positions carrying the identification information may be selected in all bit positions for carrying the identification information according to the following priorities: the position of the CRC information bits, and the bit positions sorted by the reliability size among the positions of the fixed bits. That is, the identification information is firstly carried in the position of the CRC information bit according to the maximum length that can be carried according to the position of the CRC information bit, and then the location is sequentially carried in accordance with the reliability of the fixed bit position from the largest to the smallest. It is also possible to carry the bearer arbitrarily at all of the bit positions for carrying the identification information.
  • the first part of the identifier information carried in the position of the CRC information bit and the second part carried in the position of the fixed bit may be mutually different and complementary parts, that is, the two parts dividing the identification information are respectively carried in the CRC information bits.
  • the position and the position of the fixed bit; the first part and the second part may also be parts of the overlapping area, that is, the part of the overlapping area is repeatedly carried.
  • the base station side introduces the scrambling manner of the identification information, and after transmitting the encoded Polar code to the terminal, the terminal decodes the received Polar code.
  • the terminal decodes the received Polar code.
  • FIG. 5 another method for scrambling the bearer identification information provided in the embodiment of the present application.
  • Step 501 The terminal receives the encoded polar Polar code sent by the base station, and determines the location of the fixed bit in the Polar code.
  • the terminal after receiving the Polar code, the terminal performs a demapping and demodulation process.
  • Step 502 The terminal carries part or all of the identification information in a location of the fixed bit; the identifier information is used to identify the terminal.
  • the terminal pre-acquires a bit position used by the base station to carry each part of the identification information in the encoding process, and carries the identification information in the position of the corresponding fixed bit according to the obtained information, and if the base station is in the position of the CRC information bit
  • the identification information is also carried in the terminal, and after the step 503, the terminal descrambles the CRC information bits according to the part of the identification information carried in the location of the CRC information bits.
  • Step 503 The terminal decodes the Polar code according to the fixed bit of the bearer identification information.
  • the terminal carries part or all of the identifier information in a fixed bit position, where the manner of carrying the bearer may have the following possible implementation manners:
  • the terminal scrambles part or all of the identification information into the fixed bit; or, when the position of the fixed bit is empty, places part or all of the identification information in a manner of explicitly carrying the fixed bit.
  • the terminal sequentially scrambles part or all of the identification information to the fixed bit in a manner of repeating several times.
  • part or all of the identification information is sequentially placed at a fixed bit position in a manner of repeating several times.
  • a commonly used representation of the identifier information is an RNTI, and may be a sequence number of the terminal, a group number of the terminal group, and the like.
  • the following uses the identifier information RNTI as an example, and the specific application scenario in which the source information bit is the DCI is further applied to the embodiment of the present application. Detailed description.
  • the base station in the encoding process of the PDCCH, the base station first performs 16-bit long CRC encoding on the DCI to be transmitted, and the information bits formed after the encoding include DCI information bits and 16-bit CRC information bits; the base station will be in the RNTI.
  • the 16-bit length part is XORed with the 16-bit CRC information to obtain 16-bit CRC information scrambled by the RNTI, and the 16-bit CRC information scrambled by the RNTI is connected to the DCI information; the base station will length the RNTI ( X-16) another part of the bit is carried in the position of the fixed bit, or the base station carries the part of the RNTI having the length of x bits in the position of the fixed bit, the part of the length of x bits and the part of the length of 16 bits described above There is an overlapping portion, and includes another portion of the above length (X-16) bits; the base station performs a Polar code encoding, modulation, mapping, and transmission procedure on the scrambled information bits and the fixed bits carrying the identification information.
  • the DCI of length n bits includes ⁇ a 0 , a 1 , a 2 ... a n-1 ⁇ , and the bits to be coded mapped to the Polar code are information bits ⁇ c 0 , c 1 , c 2 ... c n- 1 ⁇ ; a 16-bit CRC includes ⁇ p 0 , p 1 , p 2 ... p 15 ⁇ .
  • the 0th to 15th bits of the RNTI are scrambled onto the 16-bit CRC, ie, ⁇ x RNTI, 0 , x RNTI, 1 , x RNTI, 2 ... x RNTI , 15 ⁇ is scrambled to ⁇ p 0 , p 1 , p 2 ... p 15 ⁇ , and the bits to be encoded mapped to the Polar code are information bits ⁇ c n , c n+1 , c n+2 ...
  • the bearer mode can be a scrambling mode, or a way of directly placing the position of an empty fixed bit.
  • the locations of the fixed bits with higher reliability are selected according to the reliability of the fixed bits.
  • the effective bit width of the RNTI bit that can be characterized by the PDCCH is expanded without introducing any additional overhead, which increases the number of terminals that the identification information can identify.
  • the manner of carrying the RNTI shown in FIG. 7 is only one example.
  • ⁇ x RNTI, 0 , x RNTI, 1 , x RNTI, 2 ... x RNTI, 15 Some or all of the bits in ⁇ are also scrambled into the fixed bits. These more examples will be specifically illustrated in Figures 9a through 9d.
  • the RNTI bit position can be extended to extend the position of the fixed bit based on the original CRC information bit, so that the RNTI of a higher bit length can be carried.
  • the decoding process of the PDCCH is as shown in FIG. 8.
  • Step 801 The terminal receives the Polar code, and performs a demapping and demodulation process.
  • Step 802 The terminal selects a PDCCH location, and the terminal, according to the determined bit position of the base station bearer identification information, carries the RNTI allocated by the base station for identifying itself in the position of the fixed bit of the Polar code, based on the fixed bit carrying the RNTI. , decoding the Polar code.
  • Step 803 Extract CRC information bits and DCI information bits in the decoded Polar code.
  • Step 804 De-scrambling the extracted CRC information bits. This step is an optional step. If the location of the base station bearer identification information determined by the terminal does not include the CRC information bits, this step is omitted.
  • Step 805 Perform CRC check on the decoded DCI information.
  • Step 806 Determine whether the CRC check is passed. If yes, execute step 807. Otherwise, select the next PDCCH location and perform step 802.
  • Step 807 Acquire the decoded DCI information, and end the process.
  • the terminal since the existing PDCCH receiving mechanism determines whether the PDCCH is required by the terminal by determining whether the CRC check is correct, the terminal performs a CRC check every time a PDCCH location is selected, and the CRC is performed. The probability of missed verification of the check increases as the number of checksums increases. If the decoding method of the Polar code in the embodiment of the present application adopts CRC Aided Successive Cancellation List (CA-SCL), it will be performed many times in each decoding process. Test, thus increasing the probability of missed detection of CRC check.
  • CA-SCL CRC Aided Successive Cancellation List
  • the PDCCH location is coarsely selected by using the design as described below, and the PDCCH location range required by the terminal can be determined to a large extent, so that less is shown in FIG. 7 .
  • the number of CRC checks in the step does not even require a CRC check to alleviate the problem of CRC miss check.
  • the design is specifically:
  • the terminal performs the continuous cancellation of the Polar code (Successive-Cancellation, SC) by using the fixed bit carrying the RNTI, and roughly judges the value of the path metric value of the Polar code decoding process.
  • the judgment principle is: the absolute value of the path metric value obtained by the PDCCH belonging to the terminal in the detection is significantly smaller than the absolute value of the path metric value obtained by the PDCCH not belonging to the terminal in the detection.
  • the length of the CRC after the CRC encoding of the DCI is 16 bits
  • the length of the Polar code is 64 bits.
  • the method of carrying the fixed bit can be explicitly carried, that is, directly as a fixed bit, or implicitly carried, such as adding Disturbed to fixed bits.
  • the base station carries all RNTIs on the fixed bits of the Polar code to be coded bits, and performs Polar coding.
  • the terminal carries the RNTI to the position of 18 fixed bits in the received Polar code, decodes the Polar code based on the fixed bit carrying the RNTI, and descrambles the CRC information bit, and if the decoding result passes the CRC check, It means that the correct PDCCH is found.
  • Example 2 As shown in FIG. 9b, the base station carries all the RNTIs in the positions of the fixed bits of the Polar code to be coded bits, performs Polar coding, and selects 16 bits of the RNTI value to scramble the CRC information bits corresponding to the DCI. on.
  • the RNTI length that the PDCCH can carry can exceed the length of the CRC by 16 bits.
  • the terminal uses the RNTI to scramble 18 fixed bits of the received Polar code, and decodes the Polar code based on the scrambled fixed bits, and descrambles the CRC information bits. If the decoding result passes the CRC check, then Indicates that the correct PDCCH was found.
  • Example 3 As shown in FIG. 9c, the base station carries a part of the RNTI on the fixed bit position of the Polar code to be coded bit, performs Polar coding, and scrambles the remaining part of the RNTI to the CRC information bit.
  • the upper 2 bits of the RNTI are carried at the fixed bit position of the Polar code to be coded bits, and the remaining 16 bits are scrambled onto the CRC information bits.
  • the 2 bit positions are selected in the position, and the upper 2 bits of the RNTI are carried in the selected 2 fixed bits.
  • two bit positions with the highest reliability can be selected.
  • the RNTI length that the PDCCH can carry can exceed the length of the CRC by 16 bits.
  • the terminal decodes When the terminal decodes, the upper 2 bits of the RNTI allocated by the base station are carried in the positions of 2 fixed bits in the received Polar code, and the Polar code is decoded based on the fixed bit carrying the RNTI, and The CRC information bits are descrambled, and if the decoding result passes the CRC check, it indicates that the correct PDCCH is found.
  • the base station carries all or part of the RNTI in the fixed bit position of the Polar code according to the set repeated bearer mode, and performs Polar coding.
  • the base station selects a part of the RNTI that is carried on the fixed bit, and carries the selected part in the fixed bit position according to the set repeated bearer mode, and scrambles the remaining part of the RNTI to the CRC information bit, and carries the RNTI.
  • the bit to be encoded is Polar encoded.
  • the RNTI length that the PDCCH can carry can exceed the length of the CRC by 16 bits.
  • the terminal decodes When the terminal decodes, the high 2 bits of the RNTI allocated by the base station are carried in the positions of 6 fixed bits according to the set repeated bearer mode, and the Polar code is decoded based on the fixed bit carrying the RNTI, and the RNTI is used. The remaining bits descramble the CRC information bits. If the decoding result passes the CRC check, it indicates that the required PDCCH is found.
  • Example 5 the first thing to note is that Shortening is a common Polar rate matching method.
  • the characteristic is that the value of the coded bit after punching is only related to the fixed bit, thereby reducing the influence of the punching on the performance of the Polar code.
  • fixed bits are placed in the last few positions, as shown in Figure 10.
  • the last two bits of the code are truncated, thus reducing the impact of puncturing on the performance of the Polar code.
  • the last 2 bits of the bits to be encoded are set to fixed bits.
  • the reliability of the fixed bits that have an influence on the punctured bits is generally high.
  • the fixed bits that have an influence on the punctured bits Y7 and Y8 are The last two fixed bits of the bits to be coded, the reliability of the two fixed bits is generally high, and the base station prioritizes the fixed bits that have an influence on the punctured bits when selecting the fixed bits for scrambling the RNTI.
  • the rate matching of the Polar code is performed by using the shortening method, and the reliability order of some fixed bits is also prior to the information bits.
  • the RNTI is carried in the fixed bit position, the high-reliability fixed bits are also considered to be preferentially selected.
  • the fixed bit selected by the base station for carrying the RNTI is the position of the fixed bit having an influence on the punctured bit and the position where the reliability is higher than the fixed bit of the information bit.
  • the base station carries the RNTI part on the fixed bit position of the Polar code to be coded bit, performs Polar coding, and selects 16 bits of the RNTI value to be scrambled to the CRC information bit corresponding to the DCI.
  • the RNTI length that the PDCCH can carry can exceed the length of the CRC by 16 bits.
  • the embodiment of the present application further provides an apparatus 1100 for carrying identification information, where the apparatus 1100 for carrying identification information has the function of performing base station behavior in the method for carrying identification information.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more A module corresponding to the above functions.
  • the apparatus 1100 that carries the identifier information includes a determining unit 1101, a carrying unit 1102, an encoding unit 1103, and a sending unit 1104. among them:
  • the determining unit 1101 is configured to determine a bit position that can be used to carry the identification information in the to-be-coded bit, and can be used to carry the position of the fixed bit in the bit position of the identifier information, where the fixed bit is used for error correction and identification by the terminal in the decoding process.
  • the information is used to identify the terminal;
  • the bearer unit 1102 is configured to carry the identifier information in the bit position determined by the determining unit, and the encoding unit 1103 is configured to encode the bit to be encoded carrying the identifier information by using a polar Polar code encoding manner;
  • the unit 1104 is configured to send the Polar code encoded by the coding unit to the terminal.
  • the length of the bit that can carry the identification information can be extended, and the length of the identifier information that can be represented can be increased without introducing any other overhead, and the number of terminals that can be identified by the identifier information is increased. Support is provided to meet the needs of future application scenarios for mass access.
  • the bearer unit 1102 is configured to: when the bit position is empty, the identifier information is placed in the bit position; or, when the bit position is not empty, the identifier information is carried in the scrambling manner. In the bit position. In this way, by directly using the identification information as a fixed bit, not only the original error correction purpose of the fixed bit but also the position of the fixed bit can be used to carry the identification information.
  • the to-be-coded bit includes an information bit, where the information bit includes a source information bit, and a cyclic redundancy check CRC information bit corresponding to the source information bit; and the bit position further includes a location of the CRC information bit.
  • the bearer unit 1102 is configured to: carry the identifier information in the bit position according to the set mapping relationship.
  • the bearer unit 1102 is further configured to: scramble the first part of the identifier information into the CRC information bit; scramble the second part of the identifier information into the fixed bit, or empty the fixed bit position
  • the second portion is placed at a fixed bit position; wherein the first portion and the second portion are different, or the first portion and the second portion intersect.
  • the identification information is scrambled into the CRC information, which can improve the reliability and improve the decoding accuracy of the terminal.
  • more identification information is carried in the fixed bits, and the bit length of the bearer identification information bits can be widened.
  • the bearer unit 1102 is further configured to: scramble all of the identification information into the fixed bit; or, when the position of the fixed bit is empty, place all of the identification information at a fixed bit position.
  • the bearer unit 1102 is further configured to: scramble the first part of the identifier information into the CRC information bit; and sequentially scramble the second part of the identifier information into the fixed bit in a manner of repeating the number of times, or When the position of the fixed bit is empty, the second portion is sequentially placed at a position of the fixed bit in a manner of repeating several times; wherein the first portion and the second portion are different, or the first portion and the second portion have an intersection. In this way, the reliability of the identity information bearer is improved by repeating the bearer.
  • the bearer unit 1102 is further configured to: the base station sequentially sorts the reliability of the bit position, and sequentially select, in the bit position, the bit position bearing identifier information of the top reliability.
  • the identifier information is an RNTI.
  • the embodiment of the present application further provides an apparatus 1200 for carrying identification information, where the apparatus 1200 for carrying identification information has a function of implementing terminal behavior in the method for carrying the identification information.
  • the functions can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus 1200 that carries the identification information includes a receiving unit 1201, a carrying unit 1202, and a decoding unit 1203. among them:
  • the receiving unit 1201 is configured to receive the encoded polar Polar code sent by the base station, and determine the location of the fixed bit in the Polar code.
  • the bearer unit 1202 is configured to carry part or all of the identifier information to the fixed bit position received by the receiving unit.
  • the identification information is used to identify the device, and the decoding unit 1203 is configured to decode the Polar code according to the fixed bit carrying the identification information. In this way, the length of the bit that can carry the identification information can be extended, and the length of the identifier information that can be represented can be increased without introducing any other overhead, and the number of terminals that can be identified by the identifier information is increased. Support is provided to meet the needs of future application scenarios for mass access.
  • the bearer unit 1202 is configured to: scramble part or all of the identification information into the fixed bit; or, when the position of the fixed bit is empty, place part or all of the identification information at a fixed bit position. In this way, by directly using the identification information as a fixed bit, not only the original error correction purpose of the fixed bit but also the position of the fixed bit can be used to carry the identification information.
  • the bearer unit 1202 is configured to: sequentially buffer part or all of the identification information into the fixed bits in a manner of repeating the number of times; or, when the position of the fixed bit is empty, part or all of the identification information is The method of repeating several times is sequentially placed at a fixed bit position.
  • the identifier information is an RNTI.
  • the embodiment of the present application further provides an apparatus 1300 for carrying identification information, where the apparatus 1300 for carrying identification information has a function of implementing base station behavior in a method for designing the foregoing bearer identification information.
  • the functions can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the device 1300 that carries the identifier information includes a transceiver 1301, a processor 1302, a memory 1303, a transceiver 1031, and a memory 1303. Both are connected to the processor 1302.
  • the memory 1303 stores a set of programs, and the processor 1302
  • the program stored in the memory 1303 is used to cause the apparatus 1300 carrying the identification information to perform the method of any of the first aspect or the first aspect.
  • connection manner between the parts shown in FIG. 13 is only one possible example.
  • the transceiver 1301 and the memory 1303 are both connected to the processor 1302, and between the transceiver 1301 and the memory 1303. There is no connection, or it can be other possible connections.
  • the processor 1302 is configured to determine a bit position of the to-be-coded bit that can be used to carry the identifier information, where the bit position that can be used to carry the identifier information includes a fixed bit, and the fixed bit is used by the terminal to perform error correction during the decoding process.
  • the information is used to identify the terminal; and the identification information is carried in the bit position determined by the determining unit; and the bit to be encoded carrying the identification information is encoded in a polar Polar code encoding manner; and the coding unit is encoded by the transceiver 1301 The Polar code is sent to the terminal.
  • the length of the bit that can carry the identification information can be extended, and the length of the identifier information that can be represented can be increased without introducing any other overhead, and the number of terminals that can be identified by the identifier information is increased. Support is provided to meet the needs of future application scenarios for mass access.
  • the processor 1302 is further configured to: when the bit position is empty, the identifier information is placed in the bit position; or, when the bit position is not empty, the identifier information is carried in a scrambling manner. In the above bit position. In this way, by directly using the identification information as a fixed bit, not only the original error correction purpose of the fixed bit but also the position of the fixed bit can be used to carry the identification information.
  • the to-be-coded bit includes an information bit, where the information bit includes a source information bit, and a cyclic redundancy check CRC information bit corresponding to the source information bit; and the bit position further includes a location of the CRC information bit.
  • the processor 1302 is further configured to: carry the identifier information in the bit position according to the set mapping relationship.
  • the processor 1302 is further configured to: scramble the first part of the identifier information into the CRC information bit; scramble the second part of the identifier information into the fixed bit, or empty the fixed bit position
  • the second portion is placed at a fixed bit position; wherein the first portion and the second portion are different, or the first portion and the second portion intersect.
  • the identification information is scrambled into the CRC information, which can improve the reliability and improve the decoding accuracy of the terminal.
  • more identification information is carried in the fixed bits, and the bit length of the bearer identification information bits can be widened.
  • the processor 1302 is further configured to: scramble all of the identification information into the fixed bit; or, when the position of the fixed bit is empty, place all of the identification information at a fixed bit position.
  • the processor 1302 is further configured to: scramble the first part of the identifier information into the CRC information bit; and sequentially scramble the second part of the identifier information into the fixed bit in a manner of repeating the number of times, or When the position of the fixed bit is empty, the second portion is sequentially placed at a position of the fixed bit in a manner of repeating several times; wherein the first portion and the second portion are different, or the first portion and the second portion have an intersection. In this way, the reliability of the identity information bearer is improved by repeating the bearer.
  • the processor 1302 is further configured to: the base station sequentially sorts the reliability of the bit position, and sequentially select, in the bit position, the bit position bearing identifier information of the top reliability.
  • the identifier information is an RNTI.
  • the embodiment of the present application further provides an apparatus 1400 for carrying identification information, where the apparatus 1400 for carrying identification information has a function of implementing base station behavior in any of the possible aspects of the foregoing second aspect and the second aspect.
  • the functions can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the device 1400 that carries the identification information includes a transceiver 1401, a processor 1402, a memory 1403, a transceiver 1401, and a memory 1403. Both are connected to the processor 1402.
  • the memory 1403 stores a set of programs, and the processor 1402 The program stored in the memory 1403 is invoked such that the device 1400 carrying the identification information performs the method of carrying the identification information as described above.
  • connection manner between the parts shown in FIG. 14 is only one possible example. It may also be that the transceiver 1401 and the memory 1403 are both connected to the processor 1402, and between the transceiver 1401 and the memory 1403. There is no connection, or it can be other possible connections.
  • the processor 1402 is configured to: the scheduling transceiver 1401 receives the encoded polar Polar code sent by the base station, determines the location of the fixed bit in the Polar code; and carries part or all of the identification information to the fixed receiving by the receiving unit. In the position of the bit, the identification information is used to identify the device; and the Polar code is decoded according to the fixed bit carrying the identification information. In this way, the length of the bit that can carry the identification information can be extended, and the length of the identifier information that can be represented can be increased without introducing any other overhead, and the number of terminals that can be identified by the identifier information is increased. Support is provided to meet the needs of future application scenarios for mass access.
  • the processor 1402 is further configured to scramble part or all of the identification information into the fixed bit; or, when the position of the fixed bit is empty, place part or all of the identification information at a fixed bit position. In this way, by directly using the identification information as a fixed bit, not only the original error correction purpose of the fixed bit but also the position of the fixed bit can be used to carry the identification information.
  • the processor 1402 is further configured to sequentially scramble some or all of the identification information into the fixed bits in a manner of repeating the number of times; or, when the position of the fixed bits is empty, part or all of the identification information is The method of repeating several times is sequentially placed at a fixed bit position.
  • the identifier information is an RNTI.
  • the embodiment of the present application further provides a system chip 1500, where the system chip 1500 includes an input interface 1501, an output interface 1502, and at least A processor 1503, a memory 1504, and optionally, the processor 1503 and the memory 1504 are connected by a bus 1505, the processor 1503 is configured to execute code in the memory 1504 when the code is executed.
  • the processor 1503 implements the method performed by the base station in FIG.
  • the system chip 1500 shown in FIG. 15 can implement the various processes implemented by the base station in the foregoing method embodiment of FIG. 4. To avoid repetition, details are not described herein again.
  • the embodiment of the present application further provides a system chip 1600.
  • the system chip 1600 includes an input interface 1601 and an output interface 1602.
  • a processor 1603, a memory 1604, optionally, the processor 1603 and the memory 1604 are connected by a bus 1605, the processor 1603 is configured to execute code in the memory 1604 when the code is executed.
  • the processor 1603 implements the method performed by the terminal in FIG. 5.
  • the system chip 1600 shown in FIG. 16 can implement the various processes implemented by the terminal in the foregoing method embodiment of FIG. 5. To avoid repetition, details are not described herein again.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

一种承载标识信息的方法及装置，用以扩展能够表征的标识信息的位长。该方法为：基站确定待编码比特中可用于承载标识信息的比特位置，所述可用于承载标识信息的比特位置中包括固定比特的位置，所述标识信息用于标识终端，所述固定比特用于所述终端在译码过程中进行纠错，所述基站将所述标识信息承载于所述比特位置中；所述基站将承载所述标识信息的所述待编码比特采用极性Polar码编码方式进行编码，并将编码后的Polar码发送给所述终端。

Description

一种承载标识信息的方法及装置
本申请要求在2016年8月10日提交中国专利局、申请号为201610652304.5、发明名称为“一种承载标识信息的方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，特别涉及一种承载标识信息的方法及装置。
背景技术
在无线网络通信系统中，基站在调度终端时，往往通过标识信息来标识不同的终端，基站通过标识信息加扰的方式来发送调度信息。
例如，无线网络临时标识(英文：Radio Network Temporary Identifier，缩写：RNTI)是长期演进(英文：Long Term Evolution，缩写：LTE)系统中基站对终端的一种标识信息。现有RNTI长度为16bit。如图1所示，在物理下行控制信道(英文：Physical Downlink Control Channel，缩写：PDCCH)的编码过程中，基站首先对要发送的下行控制信息(英文：Downlink Control Information，缩写：DCI)进行16位长的循环冗余校验(英文：Cyclical Redundancy Check，缩写：CRC)编码，编码后形成的信息中包含DCI信息和16位CRC信息，然后基站将16位RNTI信息与16位CRC信息作异或(英文：exclusive OR，缩写：XOR)操作(也即加扰操作)，获得经过RNTI加扰的16位CRC信息，将RNTI加扰后的16位CRC信息串接到上述DCI信息，并进行信道编码、调制、映射和发送流程。
在第五代(5th Generation，5G)通信系统以及后续更多可能的通信系统中，会存在海量设备接入通信(massive Machine Type Communications，mMTC)的应用场景，要求广覆盖和海量接入。若采用上述现有系统中RNTI加扰CRC的方式，由于RNTI的长度会被限制在16bit，而16bit长度的RNTI所能标识的终端数量仅仅为65536，显然这种RNTI加扰方式不能满足未来海量接入的应用场景需求。
发明内容
本申请实施例提供一种承载标识信息的方法及装置，用以解决现有标识信息的承载方式所能标识的终端数量较低的问题。
本申请实施例提供的具体技术方案如下：
第一方面，提供一种承载标识信息的方法，该方法包括：基站确定待编码比特中可用于承载标识信息的比特位置，将所述标识信息承载于所述比特位置中，将承载所述标识信息的所述待编码比特采用极性Polar码编码方式进行编码，并将编码后的Polar码发送给所述终端。其中，所述可用于承载标识信息的比特位置中包括固定比特的位置，所述固定比特用于终端在译码过程中进行纠错，所述标识信息用于标识终端。通过这种方式，能够拓展能够承载标识信息的比特长度，能够在不引入任何其他开销的情况下，增加所能表征的标识信息的长度，也就增加了标识信息所能标识的终端的数量，为适应未来海量接入的应用场景需求提供了支持。
在一个可能的设计中，所述基站将所述标识信息承载于所述比特位置中，可以通过以 下方式实现：在所述比特位置为空时，将所述标识信息置于所述比特位置中；或者，在所述比特位置不为空时，将所述标识信息以加扰的方式承载于所述比特位置中。这样，通过将标识信息直接作为固定比特，不仅能够起到固定比特原有的纠错目的，还能够利用固定比特的位置承载标识信息。
在一个可能的设计中，所述待编码比特包括信息比特，所述信息比特中包括源信息比特、和与所述源信息比特对应的循环冗余校验CRC信息比特；所述比特位置中还包括所述CRC信息比特的位置。
在一个可能的设计中，所述基站将所述标识信息承载于所述比特位置中，可以通过以下方式实现：所述基站将所述标识信息按照设定的映射关系承载于所述比特位置中。
在一个可能的设计中，所述基站将所述标识信息按照设定的映射关系承载于所述比特位置中，可以通过以下方式实现：所述基站将所述标识信息中的第一部分加扰到所述CRC信息比特中；所述基站将所述标识信息中的第二部分加扰到所述固定比特中，或者，在所述固定比特的位置为空时，将所述第二部分置于所述固定比特的位置；其中，所述第一部分和所述第二部分互异，或所述第一部分与所述第二部分存在交集。这样，将标识信息加扰到CRC信息中，能够提高可靠度，提高终端译码准确度，在这个基础上，将更多的标识信息承载于固定比特，能够拓宽承载标识信息比特的位长。
在一个可能的设计中，所述基站将所述标识信息按照设定的映射关系承载于所述比特位置中，还可以通过以下方式实现：所述基站将所述标识信息的全部加扰到所述固定比特中；或者，在所述固定比特的位置为空时，将所述标识信息的全部置于所述固定比特的位置。
在一个可能的设计中，所述基站将所述标识信息按照设定的映射关系承载于所述比特位置中，还可以通过以下方式实现：所述基站将所述标识信息中的第一部分加扰到所述CRC信息比特中；所述基站将所述标识信息中的第二部分以重复若干次的方式依次加扰到所述固定比特中，或者，在所述固定比特的位置为空时，将所述第二部分以重复若干次的方式依次置于所述固定比特的位置；其中，所述第一部分和所述第二部分互异，或所述第一部分与所述第二部分存在交集。这样，通过重复承载的方式提高了标识信息承载的可靠度。
在一个可能的设计中，所述基站将所述标识信息承载于所述比特位置中，可以通过以下方式实现：所述基站按照所述比特位置的可靠度排序，在所述比特位置中依次选择可靠度靠前的比特位置承载所述标识信息。
在一个可能的设计中，所述基站将所述标识信息的部分或者全部承载于所述固定比特的位置中，可以通过以下方式实现：所述基站将所述标识信息的部分或者全部以重复若干次的方式承载于所述固定比特的位置中，其中，按照固定比特的位置可靠度由高到低的排序，依次增加标识信息的重复承载次数。这样，承载于可靠度低的固定比特的位置的标识信息，通过重复多次的方式，能够提高终端译码成功率。
在一个可能的设计中，所述标识信息为RNTI。
在一个可能的设计中，所述标识信息为终端的序列号或终端组的组号。
第二方面，提供一种承载标识信息的方法，所述方法包括：终端接收基站发送的编码后的极性Polar码，确定所述Polar码中固定比特的位置；所述终端将所述标识信息的部分或全部承载于所述固定比特的位置中，所述终端根据承载标识信息的固定比特对所述Polar码进行译码，所述标识信息用于标识所述终端。通过这种方式，能够拓展能够承载 标识信息的比特长度，能够在不引入任何其他开销的情况下，增加所能表征的标识信息的长度，也就增加了标识信息所能标识的终端的数量，为适应未来海量接入的应用场景需求提供了支持。
在一个可能的设计中，所述终端将所述标识信息的部分或全部承载于所述固定比特的位置中，可以通过以下方式实现：所述终端将所述标识信息的部分或全部加扰到所述固定比特中；或者，在所述固定比特的位置为空时，将所述标识信息的部分或全部置于所述固定比特的位置。这样，通过将标识信息直接作为固定比特，不仅能够起到固定比特原有的纠错目的，还能够利用固定比特的位置承载标识信息。
在一个可能的设计中，所述终端将所述标识信息的部分或全部承载于所述固定比特的位置中，可以通过以下方式实现：所述终端将所述标识信息的部分或全部以重复若干次的方式依次加扰到所述固定比特中；或者，在所述固定比特的位置为空时，将所述标识信息的部分或全部以重复若干次的方式依次置于所述固定比特的位置。
在一个可能的设计中，所述标识信息为RNTI。
在一个可能的设计中，所述标识信息为终端的序列号或终端组的组号。
第三方面，提供一种承载标识信息的装置，该承载标识信息的装置具有实现上述第一方面和第一方面的任意一种可能的设计中基站行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，所述承载标识信息的装置包括：确定单元，用于确定待编码比特中可用于承载标识信息的比特位置，所述可用于承载标识信息的比特位置中包括固定比特的位置，所述固定比特用于终端在译码过程中进行纠错，所述标识信息用于标识终端；承载单元，用于将所述标识信息承载于所述确定单元确定的所述比特位置中；编码单元，用于将承载所述标识信息的所述待编码比特采用极性Polar码编码方式进行编码；发送单元，用于并将所述编码单元编码后的Polar码发送给所述终端。通过这种方式，能够拓展能够承载标识信息的比特长度，能够在不引入任何其他开销的情况下，增加所能表征的标识信息的长度，也就增加了标识信息所能标识的终端的数量，为适应未来海量接入的应用场景需求提供了支持。
在一个可能的设计中，所述承载单元用于：在所述比特位置为空时，将所述标识信息置于所述比特位置中；或者，在所述比特位置不为空时，将所述标识信息以加扰的方式承载于所述比特位置中。这样，通过将标识信息直接作为固定比特，不仅能够起到固定比特原有的纠错目的，还能够利用固定比特的位置承载标识信息。
在一个可能的设计中，所述待编码比特包括信息比特，所述信息比特中包括源信息比特、和与所述源信息比特对应的循环冗余校验CRC信息比特；所述比特位置中还包括所述CRC信息比特的位置。
在一个可能的设计中，所述承载单元用于：将所述标识信息按照设定的映射关系承载于所述比特位置中。
在一个可能的设计中，所述承载单元还用于：将所述标识信息中的第一部分加扰到所述CRC信息比特中；将所述标识信息中的第二部分加扰到所述固定比特中，或者，在所述固定比特的位置为空时，将所述第二部分置于所述固定比特的位置；其中，所述第一部分和所述第二部分互异，或所述第一部分与所述第二部分存在交集。这样，将标识信息加扰 到CRC信息中，能够提高可靠度，提高终端译码准确度，在这个基础上，将更多的标识信息承载于固定比特，能够拓宽承载标识信息比特的位长。
在一个可能的设计中，所述承载单元还用于：将所述标识信息的全部加扰到所述固定比特中；或者，在所述固定比特的位置为空时，将所述标识信息的全部置于所述固定比特的位置。
在一个可能的设计中，所述承载单元还用于：将所述标识信息中的第一部分加扰到所述CRC信息比特中；将所述标识信息中的第二部分以重复若干次的方式依次加扰到所述固定比特中，或者，在所述固定比特的位置为空时，将所述第二部分以重复若干次的方式依次置于所述固定比特的位置；其中，所述第一部分和所述第二部分互异，或所述第一部分与所述第二部分存在交集。这样，通过重复承载的方式提高了标识信息承载的可靠度。
在一个可能的设计中，所述承载单元还用于：所述基站按照所述比特位置的可靠度排序，在所述比特位置中依次选择可靠度靠前的比特位置承载所述标识信息。
在一个可能的设计中，所述标识信息为RNTI。
在一个可能的设计中，所述标识信息为终端的序列号或终端组的组号。
第四方面，提供一种承载标识信息的装置，该承载标识信息的装置具有实现上述第二方面和第二方面的任一种可能的设计中终端行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，承载标识信息的装置包括：接收单元，用于接收基站发送的编码后的极性Polar码，确定所述Polar码中固定比特的位置；承载单元，用于将所述标识信息的部分或全部承载于所述接收单元接收的所述固定比特的位置中，所述标识信息用于标识本装置；译码单元，用于根据承载标识信息的固定比特对所述Polar码进行译码。通过这种方式，能够拓展能够承载标识信息的比特长度，能够在不引入任何其他开销的情况下，增加所能表征的标识信息的长度，也就增加了标识信息所能标识的终端的数量，为适应未来海量接入的应用场景需求提供了支持。
在一个可能的设计中，所述承载单元用于：将所述标识信息的部分或全部加扰到所述固定比特中；或者，在所述固定比特的位置为空时，将所述标识信息的部分或全部置于所述固定比特的位置。这样，通过将标识信息直接作为固定比特，不仅能够起到固定比特原有的纠错目的，还能够利用固定比特的位置承载标识信息。
在一个可能的设计中，所述承载单元用于：将所述标识信息的部分或全部以重复若干次的方式依次加扰到所述固定比特中；或者，在所述固定比特的位置为空时，将所述标识信息的部分或全部以重复若干次的方式依次置于所述固定比特的位置。
在一个可能的设计中，所述标识信息为RNTI。
在一个可能的设计中，所述标识信息为终端的序列号或终端组的组号。
第五方面，提供一种承载标识信息的装置，该承载标识信息的装置具有实现上述第一方面和第一方面的任意一种可能的设计中基站行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，该承载标识信息的装置包括收发器、处理器、存储器，收发器、存储器、均与处理器连接，其中，所述存储器中存储一组程序，所述处理器用于调用所述 存储器中存储的程序，使得所述承载标识信息的装置执行第一方面或第一方面任一种可能的设计所述的方法。
第六方面，提供一种承载标识信息的装置，该承载标识信息的装置具有实现上述第二方面和第二方面的任意一种可能的设计中基站行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，该承载标识信息的装置包括收发器、处理器、存储器，收发器、存储器、均与处理器连接，其中，所述存储器中存储一组程序，所述处理器用于调用所述存储器中存储的程序，使得所述承载标识信息的装置执行如第二方面或第二方面任一种可能的设计所述的方法。
本申请实施例提供的承载标识信息的方法及装置，采用Polar码的编码方式对待编码比特进行编码，在编码过程中，通过将标识信息承载于包含Polar码中的固定比特的位置的比特位置的方式，能够在不引入任何其他开销的情况下，增加所能表征的标识信息的长度，也就增加了标识信息所能标识的终端的数量，为适应未来海量接入的应用场景需求提供了支持。
附图说明
图1为本现有技术中PDCCH编码过程示意图；
图2为本申请实施例中系统架构示意图；
图3为本申请实施例中Polar码编码方式示意图；
图4为本申请实施例中承载标识信息的方法流程图之一；
图5为本申请实施例中承载标识信息的方法流程图之二；
图6为本申请实施例中PDCCH编码过程示意图；
图7为本申请实施例中承载RNTI的方式示意图之一；
图8为本申请实施例中PDCCH解码过程示意图；
图9a为本申请实施例中承载RNTI的方式示意图之二；
图9b为本申请实施例中承载RNTI的方式示意图之三；
图9c为本申请实施例中承载RNTI的方式示意图之四；
图9d为本申请实施例中承载RNTI的方式示意图之五；
图9e为本申请实施例中承载RNTI的方式示意图之六；
图10为本申请实施例中Shortening的Polar构造示意图；
图11为本申请实施例中承载标识信息的装置结构图之一；
图12为本申请实施例中承载标识信息的装置结构图之二；
图13为本申请实施例中承载标识信息的装置结构图之三；
图14为本申请实施例中承载标识信息的装置结构图之四；
图15为本申请实施例中系统芯片结构示意图之一；
图16为本申请实施例中系统芯片结构示意图之二。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步 地详细描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
鉴于现有的标识信息的承载方式所能标识的终端数据较低的问题，本申请实施例提出一种承载标识信息的方法及装置，采用极性码(即Polar码)的编码方式对待编码比特(即bit)进行编码，在编码过程中，通过将标识信息承载于Polar码中的固定比特的位置的方式，能够在不引入任何其他开销的情况下，增加所能表征的标识信息的长度，也就增加了标识信息所能标识的终端的数量，为适应未来海量接入的应用场景需求提供了支持。
如图2所示，本申请实施例应用的系统架构中包括基站201和终端202。基站201是一种部署在无线接入网中用以为终端202提供无线通信功能的装置。基站201可以包括各种形式的宏基站，微基站，中继站，接入点等等。可以应用在不同的无线接入技术的系统中，例如LTE系统中，或者，5G通信系统等等更多可能的通信系统中。基站201还可以是其他具有基站功能的网络设备，特别地，还可以是终端对终端(英文：Device-to-Device，缩写：D2D)通信中担任基站功能的终端。终端202可以包括各种具有无限通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其他处理设备，以及各种形式的用户设备(英文：User Equipment，缩写：UE)，移动台(英文：Mobile Station，缩写：MS)等等。
本申请实施例采用的编码方式为Polar码编码方式，下面具体介绍一下Polar码编码方式。
Polar码编码方式具有高性能、低复杂度，速率匹配方式灵活的特点。如图3所示，展示了一个8x8的Polar码编码矩阵，其中输入的待编码比特以向量(0，0，0，U4，0，U6，U7，U8)表示，经过编码矩阵编码，编码后的比特以向量(Y1，Y2，Y3，Y4，Y5，Y6，Y7，Y8)表示。待编码比特向量可以分为两个部分，一部分为信息比特，在图3中标记为Data，如U4，U6，U7，U8；一部分为固定比特，在图3中标记为frozen，如0，0，0，0。在应用中，信息比特只需要发送端已知，而固定比特需要发送端和接收端均已知，且固定比特在接收端译码过程中起到纠错的作用，目的是提高信息比特位置译码的成功概率。另外，由于Polar码的极化效应，待编码比特中每个比特的可靠度呈现极化特性，不同比特位置的出错概率不同。排序列在图3中标记为Rank，排序列表征了不同比特位置的可靠程度排序情况，排序的标号越小，可靠度越高。通常情况下，选择可靠度较高的位置放置信息比特，这样有助于提高译码性能。
基于图2所示的系统架构，如图4所示，本申请实施例提供的承载标识信息的方法流程如下所述。
步骤401：基站确定待编码比特中可用于承载标识信息的比特位置。
其中，可用于承载标识信息的比特位置中包括固定比特的位置，固定比特用于终端在译码过程中进行纠错；待编码比特包括信息比特，信息比特中包括源信息比特、和与源信息对应的CRC信息比特，可选的，可用于承载标识信息的比特位置中还可包括CRC信息比特的位置；
步骤402：基站将标识信息承载于可用于承载标识信息的比特位置中。
标识信息用于标识终端，较常见的情况下，标识信息为RNTI。
可选的，基站在上述比特位置为空时，将标识信息以显式承载的方式置于上述比特位 置中；或者，在上述比特位置不为空时，将标识信息以隐式承载的方式承载于上述比特位置中，隐式承载的方式如加扰的方式。
具体地，固定比特用于终端在译码过程中起到纠错作用，提高信息比特位置的译码成功概率。基站和终端需要提前协商好固定比特的位置，且终端需要知道固定比特中的内容，因此，可以将标识信息中的一部分或者全部直接置于固定比特为空的位置，作为固定比特。
可选的，基站将标识信息按照设定的映射关系承载于上述比特位置中。具体地，可以但不限于包括以下几种映射关系。
一、基站将标识信息中的第一部分加扰到CRC信息比特中，将标识信息中的第二部分加扰到固定比特中，或者，在固定比特的位置为空时，将第二部分以显式承载的方式置于固定比特的位置；其中，第一部分和第二部分互异，或第一部分与第二部分存在交集。
二、基站将标识信息的全部加扰到固定比特中，或者，在固定比特的位置为空时，将标识信息的全部以显式承载的方式置于固定比特的位置。
在这种情况下，基站可以不采用CRC信息比特进行加扰，当然也可以将标识信息加扰到CRC信息比特中去，也就是重复加扰。
三、基站将标识信息中的第一部分加扰到CRC信息比特中；
基站将标识信息中的第二部分以重复若干次的方式依次加扰到固定比特中，或者，在固定比特的位置为空时，将第二部分以重复若干次的方式依次置于固定比特的位置。其中，第一部分和第二部分互异，或第一部分与第二部分存在交集。
其中，基站将标识信息承载于固定比特的位置中时，按照固定比特的位置可靠度由高到低的排序，依次增加标识信息的重复承载次数。例如，将标识信息以重复一次的方式承载于可靠度最高的固定比特位置，将标识信息以重复二次的方式承载于可靠度次高的固定比特位置，将标识信息以重复三次的方式承载于可靠度较低的固定比特位置。
当然，本申请实施例中，在选择承载标识信息的固定比特位置时，固定比特的排序方式可以不限于上述按照可靠度进行排序的方式，例如，还可以按照极化权重的方式等等其他排序方式。其中，极化权重的方式是指根据Polar码编码矩阵结构特点来确定排序的一类方式，其中一种方法如下：
假设待编码比特的序号为从0开始到(N-1)的N个数值，这N个数值表示成为二进制形式为<B0，B1，…，Bn-1>，以N＝8为例，序号0记为<000>，序号1记为<001>，序号2记为<010>，以此类推。每个序号相应的极化权重根据二进制形式来计算，计算公式为
Figure PCTCN2017091167-appb-000001
前述例子中，序号0的极化权重值为W0＝0*2^(0*(1/4))+0*2^(1*(1/4))+0*2^(2*(1/4))＝0，序号1的极化权重值为W1＝1*2^(0*(1/4))+0*2^(1*(1/4))+0*2^(2*(1/4))＝1。W的数字越大，排序越靠前，也可以理解为“可靠度”越高，对应图3中的rank数字越小。
可选的，基站在将标识信息加扰到固定比特中时，或者，基站将标识信息置于固定比特的位置中时，选择固定比特位置中可靠度较高的比特位置进行加扰或者放置，这样能够提高终端译码时的准确度。
步骤403：基站将承载标识信息的上述待编码比特采用Polar码编码方式进行编码，并将编码后的Polar码发送给终端。
上述步骤402中，一种可能的实现流程为如下1)-4)：
1)基站先将源信息比特进行CRC编码，编码后的信息比特中包括源信息比特和CRC信息比特；
2)基站将标识信息加扰到CRC信息比特中；
当然，标识信息的长度有可能大于CRC信息比特的长度，在这种情况下，假设标识信息的长度用K表示，CRC信息比特的长度用L表示，将标识信息中的长度为L的第一部分加扰到CRC信息比特中，并在后续步骤4)中将标识信息中的长度为(K-L)的第二部分承载于固定比特的位置。
3)基站将源信息比特与加扰后的CRC信息比特串接，形成串接后的信息比特；
4)基站将标识信息的第二部分承载于固定比特的位置。
若固定比特的位置为空，则直接将第二部分放置于固定比特的位置，即，将第二部分作为固定比特。若固定比特位置不为空，也就是存在固定比特，则可将第二部分加扰到固定比特。
除了上述这种可能的实现流程，步骤402可以有多种可能的实现流程，主要思想是用于承载标识信息的比特位置为CRC信息比特的位置和固定比特的位置组成的，用于承载标识信息的比特位置相较于现有的用于承载标识信息的CRC信息比特的位置来说显然被拓宽了，也就是待编码比特可承载的标识信息的长度被拓宽了。
在用于承载标识信息的所有的比特位置中可以按照以下优先级来选择承载标识信息的比特位置：CRC信息比特的位置、固定比特的位置中按照可靠度大小排序的比特位置。即，将标识信息先按照CRC信息比特的位置所能承载的最大长度优先承载于CRC信息比特的位置中，然后按照固定比特的位置中可靠度从大到小的顺序依次选择位置进行承载。也可以在用于承载标识信息的所有的比特位置中任意选择位置进行承载。
标识信息承载于CRC信息比特的位置中的第一部分与承载于固定比特的位置中的第二部分可以是互相不同且互补的部分，也就是将标识信息分成的两部分分别承载于CRC信息比特的位置和固定比特的位置中；第一部分和第二部分也可以是有重叠区域的部分，即重叠区域的部分被重复承载。
至此，基站侧对标识信息的加扰方式介绍完毕，在将编码后的Polar码发送给终端之后，终端对接收到的Polar码进行译码。相对应的，基于图4所示的承载标识信息的方法，如图5所示，本申请实施例中提供的另一种承载标识信息加扰方法。
步骤501：终端接收基站发送的编码后的极性Polar码，确定Polar码中固定比特的位置。
可选的，终端接收Polar码后先进行解映射、解调过程。
步骤502：终端将标识信息的部分或全部承载于固定比特的位置中；该标识信息用于标识该终端。
具体地，终端预先获取基站在编码过程中用于承载每部分标识信息的比特位置，根据获取的这个信息将标识信息承载于对应的固定比特的位置中，并且，若基站在CRC信息比特的位置中也承载了标识信息，则终端在步骤503之后，根据CRC信息比特的位置中承载的标识信息的部分，对CRC信息比特进行解扰。
步骤503：终端根据承载标识信息的固定比特对Polar码进行译码。
可选的，在步骤502，终端将标识信息的部分或全部承载于固定比特的位置中，其中，承载的方式可以有以下可能的实现方式：
终端将标识信息的部分或全部加扰到所述固定比特中；或者，在固定比特的位置为空时，将标识信息的部分或全部以显式承载的方式置于固定比特的位置。
可选的，终端将标识信息的部分或全部以重复若干次的方式依次加扰到所述固定比特 中；在所述固定比特的位置为空时，将标识信息的部分或全部以重复若干次的方式依次置于固定比特的位置。
标识信息一种常用的表现形式为RNTI，还可以是终端的序列号、终端组的组号等，下面以标识信息RNTI为例，结合源信息比特为DCI的具体应用场景对本申请实施例作进一步详细的描述。
假设RNTI长度为X比特，CRC长度为16比特，其中，X大于16。如图6所示，在PDCCH的编码过程中，基站首先对要发送的DCI进行16位长的CRC编码，编码后形成的信息比特中包含DCI信息比特和16位CRC信息比特；基站将RNTI中长度为16比特的一部分与16位CRC信息作XOR操作，获得经过RNTI加扰的16位CRC信息，将RNTI加扰后的16位CRC信息串接到上述DCI信息；基站将RNTI中长度为(X-16)比特的另一部分承载于固定比特的位置中，或者，基站将RNTI中长度为x比特的部分承载于固定比特的位置中，长度为x比特的部分与上述长度为16比特的一部分有重叠部分，且包括上述长度为(X-16)比特的另一部分；基站将加扰后的信息比特和承载标识信息的固定比特进行Polar码编码、调制、映射和发送流程。
举例来说，将RNTI中互异的两个部分分别加扰到CRC信息比特和固定比特中的实现方式如图7所示。长度为n比特的DCI包括{a0、a1、a2……an-1}，映射到Polar码的待编码比特中为信息比特{c0、c1、c2……cn-1}；长度为16比特的CRC包括{p0、p1、p2……p15}。假设RNTI的总长为k比特，k＞16，将RNTI的第0到第15比特加扰到16比特的CRC上，即将{xRNTI,0、xRNTI,1、xRNTI,2……xRNTI,15}加扰到{p0、p1、p2……p15}上，映射到Polar码的待编码比特中为信息比特{cn、cn+1、cn+2……cn+15}；将RNTI剩余的(k-16)比特{xRNTI,16、xRNTI,17、xRNTI,18……xRNTI,k}承载于Polar码的待编码比特中的固定比特的位置中，承载方式可以是加扰方式，或者直接放置在空的固定比特的位置的方式。
较佳的，可按照固定比特的可靠度排序，选择可靠度较高的固定比特的位置进行承载。
由图7可以看出，在没有引入任何额外开销的情况下，PDCCH所能表征的RNTI比特的有效位宽得到了拓展，也就增加了标识信息所能标识的终端的数量。
当然，图7所示的承载RNTI的方式只是其中一种示例，在更多可能的实现方式中，比如可以将{xRNTI,0、xRNTI,1、xRNTI,2……xRNTI,15}中的部分比特或者全部比特也加扰到固定比特中。这些更多的例子将在图9a到图9d中具体说明。总之，可以承载RNTI比特位置在原来的CRC信息比特的基础上拓展了固定比特的位置，使得可以承载更高位长的RNTI。
相对应的，PDCCH的解码过程如图8所示。
步骤801：终端接收Polar码，执行解映射、解调过程。
步骤802：终端选择一个PDCCH位置，终端根据确定的基站承载标识信息的比特位置，将基站为其分配的用于标识自身的RNTI承载于Polar码的固定比特的位置中，基于承载RNTI的固定比特，对Polar码进行译码。
步骤803：提取译码后的Polar码中的CRC信息比特和DCI信息比特。
步骤804：对提取的CRC信息比特进行解扰，本步骤为可选步骤，若终端确定的基站承载标识信息的位置中不包括CRC信息比特，则省略本步骤。
步骤805：对译码后的DCI信息进行CRC校验。
步骤806：判断CRC校验是否通过，若是则执行步骤807，否则，选择下一个PDCCH位置并执行步骤802。
步骤807：获取译码后的DCI信息，结束流程。
需要说明的是，由于现有的PDCCH接收机制中是通过判断CRC校验是否正确来确定该PDCCH是否为终端所需要的，那么终端每选定一个PDCCH位置就会执行一次CRC校验，而CRC校验的漏检概率会随着校验次数的提高而提高。若本申请实施例中Polar码的译码方式采用CRC辅助译码(英文：CRC Aided Successive Cancel lation List，缩写：CA-SCL)，则会因为在每一次译码过程中都会进行很多次CRC校验，从而加剧CRC校验的漏检概率。基于此，本申请实施例中在执行步骤702之前，采用如下所述的设计对PDCCH位置进行粗选择，能够在很大程度上确定终端所需要的PDCCH位置范围，从而较少图7所示的步骤中CRC校验的次数，甚至不需要CRC校验，缓解CRC漏检的问题。所述设计具体为：
终端用承载RNTI的固定比特进行Polar码的连续相消(英文：Successive-Cancellation，缩写：SC)译码，通过观察Polar码译码过程的路径度量(即path metric)值的的大小来大致判断被检测的PDCCH是否属于该终端，判断原理为：属于该终端的PDCCH在检测中获得的路径度量值的绝对值明显小于不属于该终端的PDCCH在检测中获得的路径度量值的绝对值。
下面将结合具体的例子描述一下各种可能的标识信息的承载方式，当然以下只是举例，并不能完全覆盖本申请实施例的所有可能的实现方式。
以下例子中，对DCI进行CRC编码后CRC的长度为16比特，Polar码长度为64比特，承载于固定比特的方式可以显式承载，即直接作为固定比特，也可以隐式的承载，如加扰到固定比特。
例1、如图9a所示，基站将RNTI全部承载于Polar码待编码比特的固定比特上，进行Polar编码。
假设DCI的信息比特加上CRC信息比特的总长度为44比特，那么固定比特占的长度为64-44＝20比特；RNTI的长度为18，在固定比特的位置中选择18个比特位置，将RNTI加扰到选择的18个固定比特中去，或者，在这18个固定比特的位置为空时，直接将RNTI作为固定比特。其中，在选择用于承载RNTI的固定比特的位置时，可以选择可靠度靠前的18个比特位置。在本例中，PDCCH所能承载的RNTI长度可超过CRC的长度16比特。
终端将RNTI承载于接收到的Polar码中的18个固定比特的位置，基于承载RNTI的固定比特对Polar码进行译码，并且对CRC信息比特进行解扰，若译码结果通过CRC校验，则表示找到正确的PDCCH。
例2、如图9b所示，基站将RNTI全部承载于Polar码待编码比特的固定比特的位置中，进行Polar编码，并且，在RNTI的值中选择16比特加扰至DCI对应的CRC信息比特上。
在本例中，PDCCH所能承载的RNTI长度可超过CRC的长度16比特。
终端采用RNTI对接收到的Polar码18个固定比特加扰，并基于加扰后的固定比特对Polar码进行译码，并且对CRC信息比特进行解扰，若译码结果通过CRC校验，则表示找到正确的PDCCH。
例3、如图9c所示，基站将RNTI的一部分承载于Polar码待编码比特的固定比特的位置上，进行Polar编码；将RNTI剩余的部分加扰到CRC信息比特上。
例如，将RNTI的高2位承载于Polar码待编码比特的固定比特的位置上，剩下的16比特加扰到CRC信息比特上。同样，假设DCI的信息比特加上CRC信息比特的总长度为44比特，那么固定比特的位置占用的长度为64-44＝20比特；RNTI的长度为18，在固定比特 的位置中选择2个比特位置，将RNTI的高2位承载于选择的2个固定比特中去。其中，在选择用于承载RNTI的固定比特位置时，可以选择可靠度靠前的2个比特位置。在本例中，PDCCH所能承载的RNTI长度可超过CRC的长度16比特。
终端译码时将基站为其分配的RNTI中的高2位，承载于接收到的Polar码中的2个固定比特的位置中，并基于承载RNTI的固定比特对Polar码进行译码，并且对CRC信息比特进行解扰，若译码结果通过CRC校验，则表示找到正确的PDCCH。
例4、基站将RNTI的全部或部分按照设定的重复承载方式承载于Polar码的固定比特的位置中，进行Polar编码。
首先，基站选择承载于固定比特上的RNTI的一部分，将选择的部分按照上述设定的重复承载方式承载于固定比特的位置中，将RNTI剩余的一部分加扰到CRC信息比特上，将承载RNTI的待编码比特进行Polar编码。
基于例3，如图9d所示，若按照设定的重复承载方式，选择RNTI的高2比特以重复3次的方式形成6比特承载于Polar码的固定比特的位置中，将RNTI中剩余的16bit加扰到CRC信息比特中。在选择用于承载RNTI的固定比特的位置时，可以选择可靠度靠前的6比特。在本例中，PDCCH所能承载的RNTI长度可超过CRC的长度16比特。
终端译码时将基站为其分配的RNTI中的高2位按照设定的重复承载方式承载于6个固定比特的位置中，并基于承载RNTI的固定比特对Polar码进行译码，并用RNTI的剩余比特对CRC信息比特进行解扰，若译码结果通过CRC校验，则表示找到需要的PDCCH。
例5、本例中，首先需要说明的是，Shortening是一种常见的Polar速率匹配方法。其特点是，打孔删去的编码后比特的值只跟固定比特有关，从而减小打孔对Polar码性能的影响。一种典型的Shortening设计中，固定bit会被放置在最后几个位置，如图10所示，最后两个编码后2比特被打孔删去，从而减小打孔对Polar码性能的影响。基于这个思想，待编码比特中的最后2个比特被设为固定比特。
若采用shortening方式对Polar码进行速率匹配，对被打孔比特有影响的固定比特的可靠度一般会很高，如图10中所示，对被打孔比特Y7和Y8有影响的固定比特为待编码比特中最后2个固定比特，这2个固定比特的可靠度一般会很高，基站在选择用于加扰RNTI的固定比特时，优先考虑对打孔比特有影响的固定比特。且这样选择后，当终端在采用上述比较路径度量值大小的方式判断PDCCH时，正确PDCCH在检测路径度量值时获得的值与其他值相比会更加显著减小，更利于终端找到正确PDCCH。
此外，采用shortening方式对Polar码进行速率匹配，部分固定比特的可靠度排序也会在信息比特之前，将RNTI承载于固定比特的位置时，也要考虑优先选择高可靠度的固定比特。
如图9e所示，基站选择的用于承载RNTI的固定比特为对打孔比特有影响的固定比特的位置和可靠度高于信息比特的固定比特的位置。任意举例来说，基站将RNTI部分承载于Polar码待编码比特的固定比特的位置上，进行Polar编码，并且，在RNTI的值中选择16比特加扰至DCI对应的CRC信息比特上。在本例中，PDCCH所能承载的RNTI长度可超过CRC的长度16比特。
基于同一发明构思，如图11所示，本申请实施例还提供一种承载标识信息的装置1100，该承载标识信息的装置1100具有上述承载标识信息的方法中基站行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多 个与上述功能相对应的模块。
可选的，承载标识信息的装置1100包括确定单元1101、承载单元1102、编码单元1103和发送单元1104。其中：
确定单元1101，用于确定待编码比特中可用于承载标识信息的比特位置，可用于承载标识信息的比特位置中包括固定比特的位置，固定比特用于终端在译码过程中进行纠错，标识信息用于标识终端；承载单元1102，用于将标识信息承载于确定单元确定的比特位置中；编码单元1103，用于将承载标识信息的待编码比特采用极性Polar码编码方式进行编码；发送单元1104，用于并将编码单元编码后的Polar码发送给终端。通过这种方式，能够拓展能够承载标识信息的比特长度，能够在不引入任何其他开销的情况下，增加所能表征的标识信息的长度，也就增加了标识信息所能标识的终端的数量，为适应未来海量接入的应用场景需求提供了支持。
可选的，承载单元1102用于：在上述比特位置为空时，将标识信息置于上述比特位置中；或者，在上述比特位置不为空时，将标识信息以加扰的方式承载于上述比特位置中。这样，通过将标识信息直接作为固定比特，不仅能够起到固定比特原有的纠错目的，还能够利用固定比特的位置承载标识信息。
可选的，待编码比特包括信息比特，信息比特中包括源信息比特、和与源信息比特对应的循环冗余校验CRC信息比特；上述比特位置中还包括CRC信息比特的位置。
可选的，承载单元1102用于：将标识信息按照设定的映射关系承载于上述比特位置中。
可选的，承载单元1102还用于：将标识信息中的第一部分加扰到CRC信息比特中；将标识信息中的第二部分加扰到固定比特中，或者，在固定比特的位置为空时，将第二部分置于固定比特的位置；其中，第一部分和第二部分互异，或第一部分与第二部分存在交集。这样，将标识信息加扰到CRC信息中，能够提高可靠度，提高终端译码准确度，在这个基础上，将更多的标识信息承载于固定比特，能够拓宽承载标识信息比特的位长。
可选的，承载单元1102还用于：将标识信息的全部加扰到固定比特中；或者，在固定比特的位置为空时，将标识信息的全部置于固定比特的位置。
可选的，承载单元1102还用于：将标识信息中的第一部分加扰到CRC信息比特中；将标识信息中的第二部分以重复若干次的方式依次加扰到固定比特中，或者，在固定比特的位置为空时，将第二部分以重复若干次的方式依次置于固定比特的位置；其中，第一部分和第二部分互异，或第一部分与第二部分存在交集。这样，通过重复承载的方式提高了标识信息承载的可靠度。
可选的，承载单元1102还用于：基站按照上述比特位置的可靠度排序，在上述比特位置中依次选择可靠度靠前的比特位置承载标识信息。
可选的，标识信息为RNTI。
基于同一发明构思，如图12所示，本申请实施例还提供一种承载标识信息的装置1200，该承载标识信息的装置1200具有实现上述承载标识信息的方法中终端行为的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
可选的，承载标识信息的装置1200包括接收单元1201、承载单元1202和译码单元1203。其中：
接收单元1201，用于接收基站发送的编码后的极性Polar码，确定Polar码中固定比特的位置；承载单元1202，用于将标识信息的部分或全部承载于接收单元接收的固定比特的位置中，标识信息用于标识本装置；译码单元1203，用于根据承载标识信息的固定比特对Polar码进行译码。通过这种方式，能够拓展能够承载标识信息的比特长度，能够在不引入任何其他开销的情况下，增加所能表征的标识信息的长度，也就增加了标识信息所能标识的终端的数量，为适应未来海量接入的应用场景需求提供了支持。
可选的，承载单元1202用于：将标识信息的部分或全部加扰到固定比特中；或者，在固定比特的位置为空时，将标识信息的部分或全部置于固定比特的位置。这样，通过将标识信息直接作为固定比特，不仅能够起到固定比特原有的纠错目的，还能够利用固定比特的位置承载标识信息。
可选的，承载单元1202用于：将标识信息的部分或全部以重复若干次的方式依次加扰到固定比特中；或者，在固定比特的位置为空时，将标识信息的部分或全部以重复若干次的方式依次置于固定比特的位置。
可选的，标识信息为RNTI。
基于同一发明构思，参阅图13所示，本申请实施例还提供一种承载标识信息的装置1300，该承载标识信息的装置1300具有实现上述承载标识信息的方法设计中基站行为的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
可选的，该承载标识信息的装置1300包括收发器1301、处理器1302、存储器1303，收发器1031、存储器1303、均与处理器1302连接，其中，存储器1303中存储一组程序，处理器1302用于调用存储器1303中存储的程序，使得承载标识信息的装置1300执行第一方面或第一方面任一种可能的设计的方法。
需要说明的是图13所示的各部分之间的连接方式仅为一种可能的示例，也可以是，收发器1301与存储器1303均与处理器1302连接，且收发器1301与存储器1303之间没有连接，或者，也可以是其他可能的连接方式。
处理器1302，用于确定待编码比特中可用于承载标识信息的比特位置，可用于承载标识信息的比特位置中包括固定比特的位置，固定比特用于终端在译码过程中进行纠错，标识信息用于标识终端；以及，将标识信息承载于确定单元确定的比特位置中；以及将承载标识信息的待编码比特采用极性Polar码编码方式进行编码；以及通过收发器1301将编码单元编码后的Polar码发送给终端。通过这种方式，能够拓展能够承载标识信息的比特长度，能够在不引入任何其他开销的情况下，增加所能表征的标识信息的长度，也就增加了标识信息所能标识的终端的数量，为适应未来海量接入的应用场景需求提供了支持。
可选的，处理器1302还用于：在上述比特位置为空时，将标识信息置于上述比特位置中；或者，在上述比特位置不为空时，将标识信息以加扰的方式承载于上述比特位置中。这样，通过将标识信息直接作为固定比特，不仅能够起到固定比特原有的纠错目的，还能够利用固定比特的位置承载标识信息。
可选的，待编码比特包括信息比特，信息比特中包括源信息比特、和与源信息比特对应的循环冗余校验CRC信息比特；上述比特位置中还包括CRC信息比特的位置。
可选的，处理器1302还用于：将标识信息按照设定的映射关系承载于上述比特位置中。
可选的，处理器1302还用于：将标识信息中的第一部分加扰到CRC信息比特中；将标识信息中的第二部分加扰到固定比特中，或者，在固定比特的位置为空时，将第二部分置于固定比特的位置；其中，第一部分和第二部分互异，或第一部分与第二部分存在交集。这样，将标识信息加扰到CRC信息中，能够提高可靠度，提高终端译码准确度，在这个基础上，将更多的标识信息承载于固定比特，能够拓宽承载标识信息比特的位长。
可选的，处理器1302还用于：将标识信息的全部加扰到固定比特中；或者，在固定比特的位置为空时，将标识信息的全部置于固定比特的位置。
可选的，处理器1302还用于：将标识信息中的第一部分加扰到CRC信息比特中；将标识信息中的第二部分以重复若干次的方式依次加扰到固定比特中，或者，在固定比特的位置为空时，将第二部分以重复若干次的方式依次置于固定比特的位置；其中，第一部分和第二部分互异，或第一部分与第二部分存在交集。这样，通过重复承载的方式提高了标识信息承载的可靠度。
可选的，处理器1302还用于：基站按照上述比特位置的可靠度排序，在上述比特位置中依次选择可靠度靠前的比特位置承载标识信息。
可选的，标识信息为RNTI。
基于同一发明构思，本申请实施例还提供了一种承载标识信息的装置1400，该承载标识信息的装置1400具有实现上述第二方面和第二方面的任意一种可能的设计中基站行为的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
可选的，该承载标识信息的装置1400包括收发器1401、处理器1402、存储器1403，收发器1401、存储器1403、均与处理器1402连接，其中，存储器1403中存储一组程序，处理器1402用于调用存储器1403中存储的程序，使得承载标识信息的装置1400执行如上所述的承载标识信息的方法。
需要说明的是图14所示的各部分之间的连接方式仅为一种可能的示例，也可以是，收发器1401与存储器1403均与处理器1402连接，且收发器1401与存储器1403之间没有连接，或者，也可以是其他可能的连接方式。
可选的，处理器1402，用于调度收发器1401接收基站发送的编码后的极性Polar码，确定Polar码中固定比特的位置；以及将标识信息的部分或全部承载于接收单元接收的固定比特的位置中，标识信息用于标识本装置；以及根据承载标识信息的固定比特对Polar码进行译码。通过这种方式，能够拓展能够承载标识信息的比特长度，能够在不引入任何其他开销的情况下，增加所能表征的标识信息的长度，也就增加了标识信息所能标识的终端的数量，为适应未来海量接入的应用场景需求提供了支持。
可选的，处理器1402还用于将标识信息的部分或全部加扰到固定比特中；或者，在固定比特的位置为空时，将标识信息的部分或全部置于固定比特的位置。这样，通过将标识信息直接作为固定比特，不仅能够起到固定比特原有的纠错目的，还能够利用固定比特的位置承载标识信息。
可选的，处理器1402还用于将标识信息的部分或全部以重复若干次的方式依次加扰到固定比特中；或者，在固定比特的位置为空时，将标识信息的部分或全部以重复若干次的方式依次置于固定比特的位置。
可选的，标识信息为RNTI。
基于与图4所示的承载标识信息加扰方法的同一发明构思，如图15所示，本申请实施例还提供了一种系统芯片1500，系统芯片1500包括输入接口1501、输出接口1502、至少一个处理器1503、存储器1504，可选的，所述处理器1503以及存储器1504之间通过总线1505相连，所述处理器1503用于执行所述存储器1504中的代码，当所述代码被执行时，所述处理器1503实现图4中的基站执行的方法。
图15所示的系统芯片1500能够实现前述图4方法实施例中由基站所实现的各个过程，为避免重复，这里不再赘述。
基于与图5所示的承载标识信息加扰方法的同一发明构思，如图16所示，本申请实施例还提供了一种系统芯片1600，系统芯片1600包括输入接口1601、输出接口1602、至少一个处理器1603、存储器1604，可选的，所述处理器1603以及存储器1604之间通过总线1605相连，所述处理器1603用于执行所述存储器1604中的代码，当所述代码被执行时，所述处理器1603实现图5中的终端执行的方法。
图16所示的系统芯片1600能够实现前述图5方法实施例中由终端所实现的各个过程，为避免重复，这里不再赘述。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请实施例的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (36)

  1. 一种承载标识信息的方法，其特征在于，包括：
    基站确定待编码比特中可用于承载标识信息的比特位置，所述可用于承载标识信息的比特位置中包括固定比特的位置，所述标识信息用于标识终端，所述固定比特用于所述终端在译码过程中进行纠错；
    所述基站将所述标识信息承载于所述比特位置中；
    所述基站将承载所述标识信息的所述待编码比特采用极性Polar码编码方式进行编码，并将编码后的Polar码发送给所述终端。
  2. 如权利要求1所述的方法，其特征在于，所述基站将所述标识信息承载于所述比特位置中，包括：
    在所述比特位置为空时，将所述标识信息置于所述比特位置中；或者，
    在所述比特位置不为空时，将所述标识信息以加扰的方式承载于所述比特位置中。
  3. 如权利要求1或2所述的方法，其特征在于，所述待编码比特包括信息比特，所述信息比特中包括源信息比特、和与所述源信息比特对应的循环冗余校验CRC信息比特；
    所述比特位置中还包括所述CRC信息比特的位置。
  4. 如权利要求1、2或3所述的方法，其特征在于，所述基站将所述标识信息承载于所述比特位置中，包括：
    所述基站将所述标识信息按照设定的映射关系承载于所述比特位置中。
  5. 如权利要求4所述的方法，其特征在于，所述基站将所述标识信息按照设定的映射关系承载于所述比特位置中，包括：
    所述基站将所述标识信息中的第一部分加扰到所述CRC信息比特中；
    所述基站将所述标识信息中的第二部分加扰到所述固定比特中，或者，在所述固定比特的位置为空时，将所述第二部分置于所述固定比特的位置；
    其中，所述第一部分和所述第二部分互异，或所述第一部分与所述第二部分存在交集。
  6. 如权利要求4所述的方法，其特征在于，所述基站将所述标识信息按照设定的映射关系承载于所述比特位置中，包括：
    所述基站将所述标识信息的全部加扰到所述固定比特中；或者，
    在所述固定比特的位置为空时，将所述标识信息的全部置于所述固定比特的位置。
  7. 如权利要求4所述的方法，其特征在于，所述基站将所述标识信息按照设定的映射关系承载于所述比特位置中，包括：
    所述基站将所述标识信息中的第一部分加扰到所述CRC信息比特中；
    所述基站将所述标识信息中的第二部分以重复若干次的方式依次加扰到所述固定比特中，或者，在所述固定比特的位置为空时，将所述第二部分以重复若干次的方式依次置于所述固定比特的位置；
    其中，所述第一部分和所述第二部分互异，或所述第一部分与所述第二部分存在交集。
  8. 如权利要求1-7任一项所述的方法，其特征在于，所述基站将所述标识信息承载于所述比特位置中，包括：
    所述基站按照所述比特位置的可靠度排序，在所述比特位置中依次选择可靠度靠前的比特位置承载所述标识信息。
  9. 如权利要求4所述的方法，其特征在于，所述基站将所述标识信息按照设定的映射关系承载于所述比特位置中，包括：
    所述基站将所述标识信息的部分或者全部以重复若干次的方式承载于所述固定比特的位置中；其中，按照固定比特的位置可靠度由高到低的排序，依次增加标识信息的重复承载次数。
  10. 如权利要求1-9任一项所述的方法，其特征在于，所述标识信息为无线网络临时标识RNTI。
  11. 如权利要求1-9任一项所述的方法，其特征在于，所述标识信息为终端的序列号或终端组的组号。
  12. 一种承载标识信息的方法，其特征在于，包括：
    终端接收基站发送的编码后的极性Polar码，确定所述Polar码中固定比特的位置；
    所述终端将所述标识信息的部分或全部承载于所述固定比特的位置中，所述标识信息用于标识所述终端；
    所述终端根据承载标识信息的固定比特对所述Polar码进行译码。
  13. 如权利要求12所述的方法，其特征在于，所述终端将所述标识信息的部分或全部承载于所述固定比特的位置中，包括：
    所述终端将所述标识信息的部分或全部加扰到所述固定比特中；或者，
    在所述固定比特的位置为空时，将所述标识信息的部分或全部置于所述固定比特的位置。
  14. 如权利要求12所述的方法，其特征在于，所述终端将所述标识信息的部分或全部承载于所述固定比特的位置中，包括：
    所述终端将所述标识信息的部分或全部以重复若干次的方式依次加扰到所述固定比特中；或者，
    在所述固定比特的位置为空时，将所述标识信息的部分或全部以重复若干次的方式依次置于所述固定比特的位置。
  15. 如权利要求12、13或14所述的方法，其特征在于，所述标识信息为无线网络临时标识RNTI。
  16. 如权利要求12、13或14所述的方法，其特征在于，所述标识信息为终端的序列号或终端组的组号。
  17. 一种承载标识信息的装置，其特征在于，包括：
    确定单元，用于确定待编码比特中可用于承载标识信息的比特位置，所述可用于承载标识信息的比特位置中包括固定比特的位置，所述标识信息用于标识终端，所述固定比特用于所述终端在译码过程中进行纠错；
    承载单元，用于将所述标识信息承载于所述确定单元确定的所述比特位置中；
    编码单元，用于将承载所述标识信息的所述待编码比特采用极性Polar码编码方式进行编码；
    发送单元，用于并将所述编码单元编码后的Polar码发送给所述终端。
  18. 如权利要求17所述的装置，其特征在于，所述承载单元用于：
    在所述比特位置为空时，将所述标识信息置于所述比特位置中；或者，
    在所述比特位置不为空时，将所述标识信息以加扰的方式承载于所述比特位置中。
  19. 如权利要求17或18所述的装置，其特征在于，所述待编码比特包括信息比特，所述信息比特中包括源信息比特、和与所述源信息比特对应的循环冗余校验CRC信息比特；
    所述比特位置中还包括所述CRC信息比特的位置。
  20. 如权利要求17、18或19所述的装置，其特征在于，所述承载单元用于：
    将所述标识信息按照设定的映射关系承载于所述比特位置中。
  21. 如权利要求20所述的装置，其特征在于，所述承载单元还用于：
    将所述标识信息中的第一部分加扰到所述CRC信息比特中；
    将所述标识信息中的第二部分加扰到所述固定比特中，或者，在所述固定比特的位置为空时，将所述第二部分置于所述固定比特的位置；
    其中，所述第一部分和所述第二部分互异，或所述第一部分与所述第二部分存在交集。
  22. 如权利要求20所述的装置，其特征在于，所述承载单元还用于：
    将所述标识信息的全部加扰到所述固定比特中；或者，
    在所述固定比特的位置为空时，将所述标识信息的全部置于所述固定比特的位置。
  23. 如权利要求20所述的装置，其特征在于，所述承载单元还用于：
    将所述标识信息中的第一部分加扰到所述CRC信息比特中；
    将所述标识信息中的第二部分以重复若干次的方式依次加扰到所述固定比特中，或者，在所述固定比特的位置为空时，将所述第二部分以重复若干次的方式依次置于所述固定比特的位置；
    其中，所述第一部分和所述第二部分互异，或所述第一部分与所述第二部分存在交集。
  24. 如权利要求17-23任一项所述的装置，其特征在于，所述承载单元还用于：
    按照所述比特位置的可靠度排序，在所述比特位置中依次选择可靠度靠前的比特位置承载所述标识信息。
  25. 如权利要求17-24任一项所述的装置，其特征在于，所述承载单元还用于：
    将所述标识信息的部分或者全部以重复若干次的方式承载于所述固定比特的位置中；其中，按照固定比特的位置可靠度由高到低的排序，依次增加标识信息的重复承载次数。
  26. 如权利要求17-25任一项所述的装置，其特征在于，所述标识信息为无线网络临时标识RNTI。
  27. 如权利要求17-25任一项所述的装置，其特征在于，所述标识信息为终端的序列号或终端组的组号。
  28. 一种承载标识信息的装置，其特征在于，包括：
    接收单元，用于接收基站发送的编码后的极性Polar码，确定所述Polar码中固定比特的位置；
    承载单元，用于将所述标识信息的部分或全部承载于所述接收单元接收的所述固定比特的位置中，所述标识信息用于标识本装置；
    译码单元，用于根据承载标识信息的固定比特对所述Polar码进行译码。
  29. 如权利要求28所述的装置，其特征在于，所述承载单元用于：
    将所述标识信息的部分或全部加扰到所述固定比特中；或者，
    在所述固定比特的位置为空时，将所述标识信息的部分或全部置于所述固定比特的位置。
  30. 如权利要求28所述的装置，其特征在于，所述承载单元用于：
    将所述标识信息的部分或全部以重复若干次的方式依次加扰到所述固定比特中；或者，
    在所述固定比特的位置为空时，将所述标识信息的部分或全部以重复若干次的方式依次置于所述固定比特的位置。
  31. 如权利要求28、29或30所述的装置，其特征在于，所述标识信息为无线网络临时标识RNTI。
  32. 如权利要求28、29或30所述的装置，其特征在于，所述标识信息为终端的序列号或终端组的组号。
  33. 一种承载标识信息的装置，其特征在于，包括收发器、处理器、存储器，收发器、存储器、均与处理器连接，其中，所述存储器中存储一组程序，所述处理器用于调用所述存储器中存储的程序，使得所述承载标识信息的装置执行如权利要求1-11任一项所述的方法。
  34. 一种承载标识信息的装置，其特征在于，包括收发器、处理器、存储器，收发器、存储器、均与处理器连接，其中，所述存储器中存储一组程序，所述处理器用于调用所述存储器中存储的程序，使得所述承载标识信息的装置执行如权利要求12-16任一项所述的方法。
  35. 一种系统芯片，其特征在于，包括输入接口、输出接口、处理器和存储器，其中，所述存储器中存储一组程序，所述处理器用于调用所述存储器中存储的程序，使得所述承载标识信息的装置执行如权利要求1-11任一项所述的方法。
  36. 一种系统芯片，其特征在于，包括输入接口、输出接口、处理器和存储器，其中，所述存储器中存储一组程序，所述处理器用于调用所述存储器中存储的程序，使得所述承载标识信息的装置执行如权利要求12-16任一项所述的方法。
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