WO2013166961A1 - Procédé et dispositif de reconnaissance de type d'onde porteuse - Google Patents

Procédé et dispositif de reconnaissance de type d'onde porteuse Download PDF

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Publication number
WO2013166961A1
WO2013166961A1 PCT/CN2013/075304 CN2013075304W WO2013166961A1 WO 2013166961 A1 WO2013166961 A1 WO 2013166961A1 CN 2013075304 W CN2013075304 W CN 2013075304W WO 2013166961 A1 WO2013166961 A1 WO 2013166961A1
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WIPO (PCT)
Prior art keywords
detected
ofdm symbol
carrier
type
pbch
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PCT/CN2013/075304
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English (en)
Chinese (zh)
Inventor
高雪娟
潘学明
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电信科学技术研究院
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Publication of WO2013166961A1 publication Critical patent/WO2013166961A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a carrier type identification method and device.
  • LTE-A Long Term Evolution-Advanced
  • LTE-A Long Term Evolution-Advanced
  • the peak rate of the system is significantly higher than that of the Long Term Evolution (LTE) system, which requires downlink lGbps and uplink 500 Mbps. Therefore, the LTE-A system needs to expand the available bandwidth of the terminal, that is, to aggregate multiple consecutive or discontinuous carriers under the same base station (e B ), and simultaneously serve the user equipment (User Equipment, UE) to provide the required The rate, as shown in Figure 1.
  • e B base station
  • UE User Equipment
  • Each cell can be a member carrier, and cells (member carriers) under different eNBs cannot be aggregated.
  • each carrier does not exceed 20 MHz at the maximum.
  • the downlink reference signals in the LTE-A system mainly include Cell-specific Reference Signals (CRS) and UE-specific Reference Signals (UTS), or also known as Downlink or Dedicated Reference Signals, DRS. ), Positioning Reference Signal (PSS), Channel State Information Reference Signal (CSI-RS).
  • CRS Cell-specific Reference Signals
  • UTS UE-specific Reference Signals
  • DRS Downlink or Dedicated Reference Signals
  • PSS Positioning Reference Signal
  • CSI-RS Channel State Information Reference Signal
  • the CRS supports 1, 2, and 4 antenna port transmissions. It is mainly used for data demodulation of downlink channels, and there is transmission in each downlink subframe.
  • the mapping method in a physical resource block (PRB) is as follows. As shown in Fig. 2a and Fig. 2b, Fig. 2a shows the mapping mode under the conventional Cyclic Prefix (CP), and Fig. 2b shows the mapping mode under the extended CP.
  • the CRS is generated based on a pseudo-random sequence, as shown in the following formula (1), in which each Orthogonal Frequency Division Multiplexing (OFDM) symbol is based on a slot number " s , an OFDM symbol number, a cell identifier ⁇ 1, and a cyclic prefix.
  • Type-related parameters ⁇ are initialized, ie CRS transmitted on each OFDM symbol
  • Rmax, DL sequence is different, as shown in formula (2).
  • the CRS sequence corresponding to one OFDM symbol is generated based on the number of CRS symbols required on one antenna port in the maximum bandwidth 7 (typically 20 MHz, 110 PRB in physical resource block (PRB)), and the single antenna port is in one Two PRS symbols are included in one PRB on an OFDM symbol, therefore, CRS generation
  • the sequence length is 2 , and the CRS sequence is mapped to each PRB in the maximum bandwidth according to the maximum bandwidth. If the current downlink system bandwidth is less than the maximum bandwidth, the actual downlink system mapped to the center of the maximum bandwidth band is actually used. The CRS in the PRB corresponding to the bandwidth.
  • Cinit for normal CP For extended CP
  • DRS supports 1 ⁇ 8 antenna port transmissions, and only transmits on the PRB where the downlink data of transmission mode 7 ⁇ 9 is used.
  • DRS is not transmitted in a PRB where the DRS and the Physical Broadcast Channel (PBCH) or the synchronization signal overlap in the same subframe. Therefore, the DRS cannot be transmitted within these PRBs.
  • PBCH Physical Broadcast Channel
  • Demodulated downlink data but can transmit downlink data based on CRS demodulation.
  • the cell search is the first step of the UE accessing a cell. Through the process, the UE can obtain downlink synchronization with the access cell, obtain cell identity information (cell ID), and cell-related configuration information to ensure that the UE is in the cell. normal work.
  • Cell search mainly includes synchronization signal detection and PBCH reception.
  • the synchronization signal includes a Primary Synchronized Signal (PSS) and a Secondary Synchronization Signal (SSS) for performing downlink timing, and finding a starting position of the radio frame for data reception and transmission.
  • PSS Primary Synchronized Signal
  • SSS Secondary Synchronization Signal
  • the PSS and SSS are transmitted only on 72 subcarriers in the center of the cell band (the actual occupation of 62 subcarriers, and the remaining subcarriers are used as guard intervals).
  • frame structure type 1 that is, the frame structure of a Frequency Division Duplex (FDD) system
  • PSS and SSS are transmitted on the last and second to last OFDM symbols of slots 0 and 10, respectively
  • TDD Time Division Duplex
  • the PSS is transmitted on the third OFDM symbol of the subframes 1 and 6, wherein the subframe 1 is a special subframe, including the downlink pilot time slot.
  • FIG. 3a is a schematic diagram of resource mapping of the synchronization signal of the FDD system
  • FIG. 3b A schematic diagram of resource mapping for a synchronization signal of a TDD system.
  • the PBCH is used to carry the Master Information Block (MIB), and mainly carries: the downlink system bandwidth of the cell, the Physical HARQ Indication Channel (PHICH) configuration, and the system frame number (System Frame Number). , SFN).
  • MIB Master Information Block
  • the different scrambling sequences used by the Cyclic Redundancy Check (CRC) information of the PBCH indicate the number of CRS antenna ports of the base station.
  • the UE can obtain the number of antenna ports by blindly detecting the scrambling sequence of the CRC of the PBCH.
  • the physical downlink control channel Physical Downlink Control Channel, PDCCH PHICH ⁇ physical control format indicator channel (PCIFCH) and other channels are transmitted using the CRS antenna port number.
  • the PBCH is updated in a period of 40 ms, in consecutive 4
  • the first four OFDM symbols of the second time slot (ie, time slot 1) of the subframe 0 of each radio frame in each radio frame are transmitted, and the 72 subcarriers in the center of the carrier frequency band are fixedly occupied in the frequency domain, as shown in FIG. 4a.
  • Figure 4b As shown in FIG. 4a, the mapping mode under the conventional CP is shown, and FIG. 4b is the mapping mode under the extended CP.
  • version 11 (Rel-11) of the LTE-A system determines to introduce a new carrier type (NBR) to enhance system spectrum utilization and better support heterogeneity. Network, reduce power consumption.
  • the NCT carrier only supports single-antenna port (antenna port 0) CRS transmission with a period of 5ms, and CRS is not used for downlink data demodulation.
  • the NCT carrier cannot work independently and needs to work in conjunction with a legacy carrier.
  • the receiving end According to whether the receiving end has a certain deviation from the legacy carrier in the time domain and the frequency domain, it is divided into a synchronous carrier and an asynchronous carrier, and the latter needs to perform separate time-frequency synchronization processing, so the synchronization signal needs to be transmitted on the NCT carrier.
  • the downlink data on the NCT carrier needs to be demodulated based on DRS, and the synchronization signal on the legacy carrier overlaps with the DRS
  • a new synchronization signal transmission time domain location needs to be designed to avoid the CRS and The resources of the downlink reference signals such as DRS overlap.
  • the NCT carrier may also work independently. Therefore, the PBCH needs to be transmitted. The PBCH transmission should also avoid overlapping with the downlink reference signals such as CRS and DRS.
  • the synchronization signal transmission resource on the NCT carrier is different from the legacy carrier.
  • the UE cannot determine whether the access carrier is an NCT carrier or a legacy carrier, the UE cannot obtain the correct synchronization signal data, and thus cannot correctly receive the PBCH, and cannot implement the normal cell search process. .
  • the embodiments of the present invention provide a carrier type identification method and device, which are used to solve the problem of how a terminal identifies a carrier type.
  • a carrier type identification method comprising:
  • the terminal detects the first type of signal on the current carrier, and detects the second type of signal according to the detected first type of signal, where the first type of signal is a synchronization signal, and the second type of signal is a physical broadcast signal PBCH or Cell-specific reference signal CRS;
  • the terminal determines the carrier type of the current carrier according to the positional relationship between the detected resource of the first type of signal and the detected resource of the second type of signal, or according to the detected second type of signal.
  • a carrier type identification method comprising:
  • the terminal detects the synchronization signal on the current carrier
  • the terminal determines the carrier type of the current carrier according to the frequency domain resource used by the detected synchronization signal transmission.
  • a terminal, the terminal comprising:
  • a detecting unit configured to detect a first type of signal on a current carrier, and detect a second type of signal according to the detected first type of signal, where the first type of signal is a synchronization signal, and the second type of signal is a physical Broadcast signal PBCH or cell-specific reference signal CRS;
  • the identifying unit is configured to determine a carrier type of the current carrier according to the positional relationship between the detected resource of the first type of signal and the detected resource of the second type of signal, or according to the detected second type of signal.
  • a terminal comprising:
  • a detecting unit configured to detect a synchronization signal on a current carrier
  • an identifying unit configured to determine a carrier type of the current carrier according to the used frequency domain resource used for the synchronization signal transmission.
  • the terminal may be based on the location relationship between the resource where the synchronization signal detected on the current carrier is located and the resource where the detected PBCH is located, or according to the PBCH detected on the current carrier, or according to the current carrier.
  • the frequency domain resource used determines the carrier type of the current carrier, thereby solving the problem of how the terminal identifies the carrier type.
  • 2a is a schematic diagram of resource mapping of a CRS in a conventional CP under a conventional CP;
  • 2b is a schematic diagram of resource mapping of a CRS in an extended CP in the prior art
  • FIG. 3a is a schematic diagram of resource mapping of a synchronization signal in an FDD system in the prior art
  • FIG. 3b is a schematic diagram of resource mapping of a synchronization signal in a TDD system in the prior art
  • 4a is a schematic diagram of resource mapping of a PBCH in a conventional CP under a conventional CP;
  • 4b is a schematic diagram of resource mapping of a PBCH in an extended CP in the prior art
  • FIG. 5 is a schematic flowchart of a method according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic flowchart of another method according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic flowchart of still another method according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a device according to an embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS the embodiment of the present invention provides a first carrier type identification method.
  • a terminal according to a resource and a detected PBCH of a synchronization signal detected on a current carrier. The location relationship between the resources in which they reside, or the carrier type of the current carrier based on the detected PBCH.
  • a method for identifying a first carrier type includes the following steps: Step 50: A terminal detects a synchronization signal on a current carrier, and detects a PBCH according to the detected synchronization signal. Step 51: The terminal is configured according to Between the resource where the detected synchronization signal is located and the resource where the detected PBCH is located The location relationship, or based on the detected PBCH, determines the carrier type of the current carrier.
  • the terminal determines the carrier type of the current carrier according to the location relationship between the resource where the detected synchronization signal is located and the resource where the detected PBCH is located, and the specific implementation may use one of the following methods:
  • the terminal determines the carrier type of the current carrier according to the detected synchronization signal and the number of orthogonal frequency division multiplexing (OFDM) symbols of the detected PBCH in the time domain;
  • OFDM orthogonal frequency division multiplexing
  • the synchronization signal includes PSS and/or SSS.
  • the terminal determines the carrier type of the current carrier according to the detected synchronization signal and the number of OFDM symbols that the detected PBCH is spaced in the time domain.
  • the specific implementation may be as follows:
  • the OFDM symbol in which the detected PSS is located and the k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated by k-1 OFDM symbols in the time domain, determining that the current carrier is the first type carrier; otherwise, Determining that the current carrier is the second type of carrier; or
  • the OFDM symbol in which the detected SSS is located and the k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated by k OFDM symbols in the time domain, determining that the current carrier is the first type of carrier; otherwise, determining The current carrier is the second type of carrier; or,
  • the OFDM symbol is separated by k-1 OFDM symbols in the time domain, and the OFDM symbol in which the detected SSS is located and the k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated by k OFDM in the time domain.
  • the symbol determines that the current carrier is the first type of carrier; otherwise, determines that the current carrier is the second type of carrier;
  • K is the number of OFDM symbols on which the PBCH transmission is on the first type of carrier.
  • K is the number of OFDM symbols on which the PBCH transmission is on the first type of carrier.
  • K 4.
  • the terminal determines the carrier type of the current carrier according to the detected synchronization signal and the number of OFDM symbols that the detected PBCH is spaced in the time domain, and the specific implementation may be as follows:
  • the current carrier is determined to be the first type of carrier; , determining that the current carrier is the second type of carrier; or
  • the current carrier is determined to be the first type carrier. Otherwise, determine that the current carrier is the second type of carrier; or,
  • the K-k+A OFDM symbols are spaced in the time domain, and the detected OFDM symbol and detection of the SSS are detected.
  • the k-th OFDM symbol in the OFDM symbol in which the PBCH is located is separated by K-k+B OFDM symbols in the time domain, and then the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined to be the second type of carrier. ;
  • CP regular cyclic prefix
  • K 4.
  • the terminal determines the type of the CP according to the detected synchronization signal (the specific behavior may be to determine the CP type by blind detection).
  • the carrier type of the current carrier is determined according to the detected synchronization signal and the detected PBCH, the transmission order in the time domain or the positional relationship of the time slot or the positional relationship of the subframe in which the subframe is located;
  • the above synchronization signal includes PSS and/or SSS.
  • the terminal determines the carrier type of the current carrier according to the detected synchronization signal and the positional relationship of the detected PBCH in the time domain or the positional relationship of the time slot or the position of the subframe in which the subframe is located, and the specific implementation may be as follows:
  • the detected OFDM symbol in which the PSS is located and the positional relationship of the OFDM symbol in the time domain or the location of the time slot or the positional relationship of the subframe in which the detected PBCH is located satisfies the first condition, determining that the current carrier is the first a type of carrier; otherwise, determining that the current carrier is the second type of carrier; or
  • the detected OFDM symbol in which the SSS is located and the positional relationship of the OFDM symbol in the time domain or the position of the slot in which the detected PBCH is located or the positional relationship of the subframe in which the subframe is located satisfies the second condition, determining that the current carrier is the first a type of carrier; otherwise, determining that the current carrier is the second type of carrier; or
  • the detected OFDM symbol in which the PSS is located and the positional relationship of the OFDM symbol in the time domain or the location of the time slot in the time domain or the positional relationship of the subframe in which the detected PBCH is located meets the first condition, and the detected SSS is located Determining the positional relationship of the OFDM symbol in the time domain or the positional relationship of the OFDM symbol in the time domain or the positional relationship of the subframe in which the detected OFDM symbol is located satisfies the second condition, and determines that the current carrier is the first type carrier; otherwise, It is determined that the current carrier is the second type of carrier.
  • the first condition includes: the OFDM symbol in which the detected OFDM symbol is ahead of the PBCH detected in the time domain; or
  • the OFDM symbol in which the detected PSS is located is in a different time slot of the same subframe or the same subframe as the OFDM symbol in which the detected PBCH is located;
  • the OFDM symbol in which the detected PSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the PSS is located advances the OFDM symbol in which the PBCH is located in the time domain;
  • the OFDM symbol in which the detected PSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the PSS is located is in the first time slot of the subframe, and the OFDM symbol in which the PBCH is located in the subframe The second time slot.
  • the second condition includes: detecting that the OFDM symbol in which the SSS is located is ahead of the OFDM symbol in which the PBCH is detected in the time domain; or
  • the OFDM symbol in which the detected SSS is located is in a different time slot of the same subframe or the same subframe as the OFDM symbol in which the detected PBCH is located;
  • the OFDM symbol in which the detected SSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located and the SSS
  • the OFDM symbol in which the OFDM symbol is located in the time domain leads the OFDM symbol in which the PBCH is located;
  • the OFDM symbol in which the detected SSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the SSS is located is in the first slot of the subframe, and the OFDM symbol in which the PBCH is located is in the second subframe of the subframe. Time slots.
  • the OFDM symbol in which the detected PSS is located is in the time domain
  • the OFDM symbol in which the PBCH is detected is advanced, or the OFDM symbol in which the detected PSS is located is in the same subframe or the same subframe as the OFDM symbol in which the detected PBCH is located.
  • Different time slots, or the OFDM symbol in which the detected PSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the PSS is located advances the OFDM symbol in which the PBCH is located in the time domain, or is detected.
  • the OFDM symbol in which the PSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the PSS is located is in the first slot of the subframe, and the OFDM symbol in which the PBCH is located is in the second slot of the subframe. , determining that the current carrier is the first type of carrier; otherwise, determining that the current carrier is the second type of carrier; or
  • the OFDM symbol in which the PBCH is detected is ahead of time, or the OFDM symbol in which the detected SSS is located is in the same subframe or the same subframe as the OFDM symbol in which the detected PBCH is located.
  • Different time slots, or the OFDM symbol in which the detected SSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the SSS is located advances the OFDM symbol in which the PBCH is located in the time domain, or is detected.
  • the OFDM symbol in which the SSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the SSS is located is in the first slot of the subframe, and the OFDM symbol in which the PBCH is located is in the second slot of the subframe. , determining that the current carrier is the first type of carrier; otherwise, determining that the current carrier is the second type of carrier; or
  • Determining the current carrier if the OFDM symbol in which the detected PSS is in the OFDM symbol in which the PBCH is detected in the time domain is advanced, and the OFDM symbol in which the detected SSS is located is ahead of the OFDM symbol in which the PBCH is detected in the time domain. Is the first type of carrier; otherwise, determining that the current carrier is the second type of carrier; or
  • the OFDM symbol in which the detected PSS is located is in a different time slot of the same subframe or the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the detected SSS is located and the OFDM symbol in which the detected PBCH is located are Determining that the current carrier is the first type of carrier in the same subframe or different time slots of the same subframe; otherwise, determining that the current carrier is the second type of carrier; or
  • the current carrier is determined to be The first type of carrier; otherwise, the current carrier is determined to be the second type of carrier; or
  • the detected OFDM symbols of the PSS and the SSS are in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbols in which the PSS and the SSS are located are in the first time slot of the subframe, and the OFDM of the PBCH is located.
  • the symbol is in the second time slot of the subframe, determining that the current carrier is the first type of carrier; otherwise, determining that the current carrier is the second type of carrier Wave.
  • the terminal determines the carrier type of the current carrier according to the detected synchronization signal and the positional relationship of the detected PBCH in the time domain or the positional relationship of the time slot or the position of the subframe in which the subframe is located, and the specific implementation may be as follows:
  • the third condition determining that the current carrier is the first a type of carrier; otherwise, determining that the current carrier is the second type of carrier; or
  • the current carrier is determined to be the first a type of carrier; otherwise, determining that the current carrier is the second type of carrier; or
  • the detected OFDM symbol in which the PSS is located and the positional relationship of the OFDM symbol in the time domain or the location of the time slot in the time domain or the positional relationship of the subframe in which the detected PBCH is located meets the third condition, and the detected SSS is located Determining the positional relationship between the OFDM symbol in the time domain or the positional relationship of the OFDM symbol in the time domain or the positional relationship of the subframe in which the detected OFDM symbol is located satisfies the fourth condition, and determines that the current carrier is the first type carrier; otherwise, It is determined that the current carrier is the second type of carrier.
  • the foregoing third condition includes: the OFDM symbol in which the detected PSS is located is backward in the time domain, and the OFDM symbol in which the detected PBCH is located;
  • the OFDM symbol in which the detected PSS is located and the OFDM symbol in which the detected PBCH is located are in different time slots of the adjacent subframe or the adjacent subframe;
  • the OFDM symbol in which the detected PSS is located and the OFDM symbol in which the detected PBCH is located in the adjacent subframe and the OFDM symbol in which the PSS is located lags behind the OFDM symbol in which the PBCH is located in the time domain;
  • the OFDM symbol in which the detected PSS is located and the OFDM symbol in which the detected PBCH is located are in the adjacent subframe, and the OFDM symbol in which the PSS is located is located in the first time slot of the next subframe, and the OFDM symbol in which the PBCH is located is located in the previous subframe.
  • the fourth condition includes: the OFDM symbol in which the detected SSS is located is backward in the time domain, and the OFDM symbol in which the detected PBCH is located; or
  • the OFDM symbol in which the detected SSS is located is in the same time slot of the same subframe or the same subframe as the OFDM symbol in which the detected PBCH is located;
  • the OFDM symbol in which the detected SSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the SSS is located is behind the OFDM symbol in which the PBCH is located in the time domain; or
  • the OFDM symbol in which the detected SSS is located is in the same slot of the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the SSS is located is behind the OFDM symbol in which the PBCH is located in the time domain; or
  • the OFDM symbol in which the detected SSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located.
  • the two OFDM symbols and the OFDM symbol in which the SSS is located lag behind the OFDM symbol in which the PBCH is located in the time domain.
  • the OFDM symbol in which the detected PSS is located is behind the OFDM symbol in which the detected PBCH is located in the time domain, or the OFDM symbol in which the detected PSS is located and the OFDM symbol in which the detected PBCH is located in the adjacent subframe or adjacent Different time slots of the subframe, or the OFDM symbol in which the detected PSS is located and the OFDM symbol in which the detected PBCH is located in the adjacent subframe and the OFDM symbol in which the PSS is located is in the time domain behind the OFDM symbol in which the PBCH is located, or The OFDM symbol in which the detected PSS is located and the OFDM symbol in which the detected PBCH is located are in the adjacent subframe, and the OFDM symbol in which the PSS is located is located in the first time slot of the next subframe, and the OFDM symbol in which the PBCH is located is located in the previous subframe.
  • the second time slot determines that the current carrier is the first type of carrier; otherwise, determines that the current carrier is the second type of carrier; or, if the detected OFDM symbol of the SSS is behind the detected PBCH in the time domain OFDM symbol, or the OFDM symbol in which the detected SSS is located is in the same time slot of the same subframe or the same subframe as the OFDM symbol in which the detected PBCH is located, or The OFDM symbol in which the detected SSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the SSS is located lags behind the OFDM symbol in which the PBCH is located in the time domain, or the OFDM symbol and detection in which the detected SSS is located The OFDM symbol to which the PBCH is located is in the same time slot of the same subframe, and the OFDM symbol in which the SSS is located lags behind the OFDM symbol in which the PBCH is located in the time domain, or the OFDM symbol in which the detected SSS
  • the current carrier is determined. Is the first type of carrier; otherwise, determining that the current carrier is the second type of carrier; or
  • the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined to be the second type carrier; or
  • the OFDM symbol in which the detected SSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the PSS and the SSS are If the OFDM symbol in the time domain is behind the OFDM symbol in which the detected PBCH is located, the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined to be the second type of carrier; or
  • the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined to be the second type of carrier.
  • the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined to be the second type of carrier.
  • Method 3 according to the detected synchronization signal and the detected PBCH, the number of OFDM symbols spaced in the time domain, and the detected synchronization signal and the detected PBCH in the time domain in the transmission order or the positional relationship of the time slot Or the positional relationship of the subframe in which the subframe is located, and determine the carrier type of the current carrier.
  • the above synchronization signal includes a primary synchronization signal PSS and/or a secondary synchronization signal sss.
  • the positional relationship of the slot or the positional relationship of the subframe is determined, and the carrier type of the current carrier is determined.
  • the specific implementation may be as follows: if the detected OFDM symbol of the PSS and the detected OFDM symbol of the PBCH are in the time domain or The positional relationship of the time slot or the positional relationship of the subframe in which the subframe is located satisfies the first condition, and the OFDM symbol in which the detected PSS is located and the kth OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated in the time domain.
  • the OFDM symbol in which the detected PSS is located is in the same subframe or the same OFDM symbol as the detected PBCH.
  • the OFDM symbol in which the detected PSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the PSS is located advances the OFDM symbol in which the PBCH is located in the time domain;
  • the OFDM symbol in which the detected PSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the PSS is located is in the first time slot of the subframe, and the OFDM symbol in which the PBCH is located in the subframe The second time slot.
  • the second condition includes: detecting that the OFDM symbol in which the SSS is located is ahead of the OFDM symbol in which the PBCH is detected in the time domain; or
  • the OFDM symbol in which the detected SSS is located is in a different time slot of the same subframe or the same subframe as the OFDM symbol in which the detected PBCH is located;
  • the OFDM symbol in which the detected SSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the SSS is located advances the OFDM symbol in which the PBCH is located in the time domain;
  • the OFDM symbol in which the detected SSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the SSS is located is in the first slot of the subframe, and the OFDM symbol in which the PBCH is located is in the second subframe of the subframe. Time slots.
  • the positional relationship of the slot or the positional relationship of the subframe is determined, and the carrier type of the current carrier is determined.
  • the specific implementation may be as follows: if the detected OFDM symbol of the PSS and the detected OFDM symbol of the PBCH are in the time domain or The positional relationship of the time slot or the positional relationship of the subframe in which the subframe is located satisfies the third condition, and the OFDM symbol in which the detected PSS is located and the kth OFDM symbol in the OFDM symbol in which the detected PBCH is located are spaced in the time domain. -k+A OFDM symbols, determining that the current carrier is the first type of carrier; otherwise, determining that the current carrier is the second type of carrier; or
  • the detected OFDM symbol and the positional relationship of the OFDM symbol in the time domain or the position of the time slot or the position of the subframe in which the detected OFDM symbol is located meet the fourth condition, and the detected SSS is located.
  • the OFDM symbol and the k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated by K-k+B OFDM symbols in the time domain, and then the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined. Is the second type of carrier; or,
  • the detected OFDM symbol in which the PSS is located and the positional relationship of the OFDM symbol in the time domain or the location of the time slot or the positional relationship of the subframe in which the detected PBCH is located meets the third condition, and the detected PSS is located.
  • the OFDM symbol and the k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated by K-k+A OFDM symbols in the time domain, and the detected OFDM symbol of the SSS and the detected PBCH are located.
  • the transmission order of the OFDM symbol in the time domain or the positional relationship of the time slot or the positional relationship of the subframe in which the subframe is located satisfies the fourth condition, and the detected OFDM symbol of the SSS and the kth of the OFDM symbol in which the detected PBCH is located OFDM symbols, which are separated by K-k+B OFDM symbols in the time domain, and then determine that the current carrier is the first type of carrier; otherwise, determine that the current carrier is the second type of carrier;
  • K 4.
  • the terminal determines the type of CP based on the detected synchronization signal.
  • the third condition includes: the OFDM symbol in which the detected PSS is located is backward in the time domain, and the OFDM symbol in which the detected PBCH is located; or
  • the OFDM symbol in which the detected PSS is located and the OFDM symbol in which the detected PBCH is located are in different time slots of the adjacent subframe or the adjacent subframe;
  • the OFDM symbol in which the detected PSS is located and the OFDM symbol in which the detected PBCH is located in the adjacent subframe and the OFDM symbol in which the PSS is located lags behind the OFDM symbol in which the PBCH is located in the time domain;
  • the OFDM symbol in which the detected PSS is located and the OFDM symbol in which the detected PBCH is located are in the adjacent subframe, and the OFDM symbol in which the PSS is located is located in the first time slot of the next subframe, and the OFDM symbol in which the PBCH is located is located in the previous subframe.
  • the fourth condition includes: the OFDM symbol in which the detected SSS is located is backward in the time domain, and the OFDM symbol in which the detected PBCH is located; or
  • the OFDM symbol in which the detected SSS is located is in the same time slot of the same subframe or the same subframe as the OFDM symbol in which the detected PBCH is located;
  • the OFDM symbol in which the detected SSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the SSS is located is behind the OFDM symbol in which the PBCH is located in the time domain; or
  • the OFDM symbol in which the detected SSS is located is in the same slot of the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the SSS is located is behind the OFDM symbol in which the PBCH is located in the time domain; or
  • the OFDM symbol in which the detected SSS is located is in the second time slot of the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which S S S is located is behind the OFDM symbol in which the PBCH is located in the time domain.
  • the terminal determines the carrier type of the current carrier according to the detected PBCH, and the specific implementation may use one of the following three methods: Manner 1: Determine the carrier type of the current carrier according to the type of the demodulated signal used by the detected PBCH. Specifically, if the detected demodulated signal used by the PBCH is a cell-specific reference signal (CRS), the current carrier is determined. For the first type of carrier; if the detected demodulated signal used by the PBCH is a downlink user-specific reference signal (DRS), it is determined that the current carrier is the second type of carrier.
  • CRS cell-specific reference signal
  • DRS downlink user-specific reference signal
  • Manner 2 determining a carrier type of the current carrier according to the time domain and/or the frequency domain resource where the detected PBCH is located; specifically, if the following condition 5 and/or condition 6 are met, determining that the current carrier is the first type carrier; Otherwise, determine that the current carrier is the second type of carrier; where:
  • Condition 5 includes: the detected time domain of the PBCH is the first 4 OFDM symbols of a time slot, or the first subframe of a radio frame, or the second time slot of a subframe, or a sub-frame The first 4 OFDM symbols of the second slot of the frame, or the first 4 OFDM symbols of the second slot of the first subframe of the radio frame;
  • the PBCH on the legacy carrier is transmitted on the first 4 OFDM symbols of the second slot of the subframe 0, assuming the transmission subframe and/or slot position of the PBCH on the NCT carrier and/or the OFDM symbol in one slot.
  • the location is different from the legacy carrier, for example, the PBCH on the NCT carrier is transmitted in the first 4 OFDM symbols of the 2nd slot of the subframe 1, or the first 4 OFDM symbols in the 1st slot of the subframe 0, or In the second to fifth OFDM symbol transmission of the second time slot of the subframe 0, the carrier may be determined according to the specific time domain position of the OFDM in which the detected PBCH transmission is satisfied.
  • the legacy carrier is also an NCT carrier.
  • the condition 6 includes: the time-frequency domain resource where the detected PBCH is located is 6 physical resource blocks (PRBs) in the center of the current carrier frequency domain, and the OFDM symbols on which the PBCH transmission is located, except for the CRS on the antenna ports 0, 1, 2, 3 RE other than the corresponding RE.
  • PRBs physical resource blocks
  • the PBCH on the legacy carrier is transmitted on the first 4 OFDM symbols of the second slot of the subframe 0, and the resource mapping of the PBCH is reserved for the RE corresponding to the CRS on the antenna ports 0 to 3, that is, in the PBCH.
  • the PBCH is not transmitted on the RE corresponding to the CRS of the 4 antenna port on the resource; and the CRS transmission on the antenna port 0 is currently determined to exist on the NCT carrier, and is transmitted in a period of 5 ms, if the CRS transmission subframe includes the PBCH transmission subframe
  • the PBCH on the NCT carrier may only reserve the RE corresponding to the CRS on the antenna port 0, that is, the PBCH is not transmitted only on the RE corresponding to the CRS on the antenna port 0 of the PBCH resource, if the CRS transmission subframe is not Including the PBCH transmission subframe, the PBCH on the NCT carrier may not reserve any RE corresponding to the CRS, that is, the PBCH is transmitted on all the REs on the PBCH resource; in this case, the legacy carrier and the PBCH on the NCT carrier are located. If the time-frequency domain resource (that is, the resource mapping mode) is different, the specific resource mapping manner of the detected PBCH can satisfy the definition of the
  • Manner 3 Determine the carrier type of the current carrier according to the number of coded bits carried by the detected PBCH.
  • the current carrier is determined to be the first type carrier; otherwise, the current carrier is determined to be the second type carrier. .
  • the first type of carrier may be a legacy carrier
  • the second type of carrier may be a new carrier type (NCT). Carrier.
  • the method for identifying a second carrier type is provided in the embodiment of the present invention.
  • the terminal is based on the resource where the synchronization signal detected on the current carrier is located and the detected CRS.
  • the location relationship of the resources, or the detected transmission subframe of the CRS, determines the carrier type of the current carrier.
  • a method for identifying a second carrier type includes the following steps: Step 60: A terminal detects a synchronization signal on a current carrier, and detects a CRS according to the detected synchronization signal.
  • Step 61 The terminal determines the carrier type of the current carrier according to the location relationship between the resource where the detected synchronization signal is located and the resource where the detected CRS is located, or the detected transmission subframe of the CRS.
  • the terminal determines the carrier type of the current carrier according to the location relationship between the resource where the detected synchronization signal is located and the resource where the detected CRS is located, and the specific implementation may use one of the following four solutions:
  • Solution 1 determining the carrier type of the current carrier according to the number of OFDM symbols that are separated in the time domain according to the OFDM symbol in which the detected synchronization signal is located and the OFDM symbol in which the detected CRS is located;
  • the synchronization signal includes PSS and / or SSS.
  • the terminal determines the carrier type of the current carrier according to the number of OFDM symbols that are separated in the time domain according to the OFDM symbol in which the detected synchronization signal is located and the OFDM symbol in which the detected CRS is located, and the specific implementation may be implemented as follows:
  • the minimum interval in the time domain is 0 OFDM symbols, determining that the current carrier is the first type of carrier; otherwise, determining that the current carrier is the second type. Carrier; or,
  • the minimum interval in the time domain If the detected OFDM symbol in which the SSS is located and the OFDM in which the detected CRS is located, the minimum interval in the time domain
  • the current carrier is the first type of carrier; otherwise, determining that the current carrier is the second type of carrier; or, if the detected OFDM symbol of the PSS and the detected OFDM are in the time domain, The minimum interval is 0 OFDM symbols, and the OFDM symbol in which the detected SSS is located and the OFDM in which the detected CRS is located have a minimum interval of 0 OFDM symbols in the time domain, and then the current carrier is determined to be the first type of carrier. Otherwise, it determines that the current carrier is the second type of carrier.
  • Solution 2 determining the carrier of the current carrier according to the OFDM symbol in which the detected synchronization signal is located and the OFDM symbol in which the detected CRS is located, the transmission order in the time domain or the positional relationship of the time slot or the positional relationship of the subframe in which the synchronization signal is located. Types of;
  • the current carrier is determined to be the first type carrier; otherwise, the current carrier is determined to be the second type carrier; or
  • the current carrier is determined to be the first type carrier; otherwise, the current carrier is determined to be the second type carrier; or
  • the detected CRS is in the OFDM, there are both OFDM symbols in which the PSS is detected in advance and backward. And determining that the current carrier is the first type of carrier, and determining that the current carrier is the second type of carrier, if the OFDM symbol in which the detected CRS is located has both the symbols of the OFDM symbols in which the advanced and backward detected SSSs are located.
  • the CRS on the legacy carrier is transmitted in each subframe, and there is at least transmission on the OFDM symbols before and after the synchronization signal, and the CRS on the NCT carrier is transmitted in the period of 5 ms. If the CRS and synchronization on the NCT carrier are specified in advance. If the signals are not in the same subframe, the carrier type can be determined based on whether the CRS is detected on both the OFDM symbols before and after the synchronization signal.
  • Solution 3 The number of OFDM symbols spaced in the time domain according to the OFDM symbol in which the detected synchronization signal is located and the OFDM symbol in which the detected CRS is located, and the detected OFDM symbol and the detected CRS.
  • the OFDM symbol in which the OFDM symbol in the time domain is in the time sequence or the positional relationship of the time slot or the positional relationship of the subframe in which the OFDM symbol is located, determines the carrier type of the current carrier;
  • the synchronization signal includes PSS and / or sss.
  • the number of OFDM symbols spaced in the time domain according to the OFDM symbol in which the detected synchronization signal is located and the OFDM symbol in which the detected CRS is located, and the OFDM symbol in which the detected synchronization signal is located and the detected CRS determines the carrier type of the current carrier, and the specific implementation can be implemented as follows:
  • Determining that the current carrier is the first class if the OFDM symbol in which the detected PSS is located and the OFDM symbol in the OFDM in which the detected CRS is located is closest to the PSS and leads the PSS, and is separated by 1 OFDM symbol in the time domain. Carrier; otherwise, determine that the current carrier is the second type of carrier; or,
  • the current carrier is the first class if the OFDM symbol in which the detected SSS is located is the OFDM symbol that is closest to the SSS and is behind the SSS in the OFDM where the detected CRS is located, and is separated by 1 OFDM symbol in the time domain. Carrier; otherwise, determine that the current carrier is the second type of carrier; or,
  • the OFDM symbol in which the detected PSS is located and the OFDM symbol in the OFDM where the detected CRS is located closest to the PSS and leads the PSS are separated by 1 OFDM symbol in the time domain, and the detected PSS is located.
  • the OFDM symbol and the OFDM symbol in the OFDM where the detected CRS is located closest to the PSS and behind the PSS are separated by 0 OFDM symbols in the time domain, and then determine that the current carrier is the first type of carrier; otherwise, determine the current carrier. Is the second type of carrier; or,
  • the detected OFDM symbol in which the SSS is located is closest to the SSS in the OFDM where the detected CRS is located and Advancing the OFDM symbol of the SSS by 0 OFDM symbols in the time domain, and detecting the OFDM symbol in which the SSS is located and the OFDM symbol in the OFDM where the detected CRS is located closest to the SSS and behind the SSS Determining the current carrier as the first type of carrier by spacing 1 OFDM symbol in the time domain; otherwise, determining that the current carrier is the second type of carrier; or
  • the OFDM symbol in which the detected PSS is located and the OFDM symbol in the OFDM where the detected CRS is located closest to the PSS and leads the PSS are separated by 1 OFDM symbol in the time domain, and the detected PSS is located.
  • the OFDM symbol is the OFDM symbol that is closest to the PSS and is behind the PSS in the OFDM where the detected CRS is located, and is separated by 0 OFDM symbols in the time domain, and the detected OFDM symbol of the SSS and the detected CRS
  • the OFDM symbol in the OFDM that is closest to the SSS and leads the SSS is separated by 0 OFDM symbols in the time domain, and the OFDM symbol in which the detected SSS is located is the closest to the OFDM in which the detected CRS is located.
  • the OFDM symbol of the SSS and the SSS is separated by 1 OFDM symbol in the time domain, and then the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined to be the second type of carrier.
  • Solution 4 determining, according to whether the detected subframe in which the synchronization signal is located and the subframe in which the detected CRS is located, determining a carrier type of the current carrier;
  • the current carrier is the first type of carrier; otherwise, the current carrier is determined to be the second type of carrier. This is because the CRS on the legacy carrier has a transmission in each subframe.
  • the CRS is transmitted only in a period of 5 ms. If the CRS on the NCT carrier is not specified to be transmitted in the same subframe, the Whether the UE detects the carrier type by simultaneously detecting the synchronization signal and the CRS in the same subframe.
  • step 61 the terminal determines the carrier type of the current carrier according to the detected transmission subframe of the CRS, and the specific implementation may be: 3 ⁇ 4:
  • the current carrier is the first type of carrier; otherwise, the current carrier is determined to be the second type of carrier. This is because the CRS on the legacy carrier is transmitted in every subframe, and the CRS is transmitted on the NCT carrier only in a period of 5 ms.
  • the first type of carrier may be a legacy carrier
  • the second type of carrier may be an NCT carrier
  • the method for identifying a third carrier type is provided in the embodiment of the present invention.
  • the terminal determines the current frequency domain resource according to the synchronization signal detected on the current carrier.
  • Carrier type of carrier is provided.
  • a method for identifying a third carrier type includes the following steps: Step 70: A terminal detects a synchronization signal on a current carrier.
  • Step 71 The terminal determines the carrier type of the current carrier according to the frequency domain resource used by the detected synchronization signal transmission.
  • step 71 can be as follows: If the detected frequency domain resource used for the synchronization signal transmission is a continuous subcarrier, determining that the current carrier is the first type of carrier; otherwise, determining that the current carrier is the second type of carrier;
  • the synchronization signal includes PSS and / or sss.
  • the frequency domain resource where the synchronization signal transmission on the legacy carrier is located is a continuous subcarrier in the center of the carrier frequency band (for example, 72 or 62 subcarriers in the center of the frequency band), and the frequency domain resource where the synchronization signal is transmitted on the NCT carrier is the center of the carrier frequency band.
  • the non-contiguous subcarriers (for example, the synchronization signal is the same as the OFDM symbol corresponding to the downlink reference signal such as DRS/CRS, on which the synchronization signal is only mapped on REs other than the RE corresponding to the downlink reference signal such as DRS/CRS).
  • the first type of carrier may be a legacy carrier
  • the second type of carrier may be an NCT carrier
  • an embodiment of the present invention provides a terminal, where the terminal includes:
  • the detecting unit 80 is configured to detect a synchronization signal on the current carrier, and detect a physical broadcast channel PBCH according to the detected synchronization signal;
  • the identifying unit 81 is configured to determine a carrier type of the current carrier according to the positional relationship between the resource where the detected synchronization signal is located and the resource where the detected PBCH is located, or according to the detected PBCH.
  • the identifying unit 81 is configured to: determine, according to a location relationship between a resource where the detected synchronization signal is located and a resource where the detected PBCH is located, according to a method, determine a carrier type of the current carrier:
  • the positional relationship of the frame determines the carrier type of the current carrier.
  • the synchronization signal includes a primary synchronization signal PS S and/or a secondary synchronization signal S S S .
  • the identifying unit 81 is configured to: for the frame structure type 1, determine the carrier type of the current carrier according to the detected synchronization signal and the number of OFDM symbols that are separated in the time domain by the detected PBCH according to the following method: The OFDM symbol in which the detected PSS is located and the k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated by k-1 OFDM symbols in the time domain, and then the current carrier is determined to be the first type of carrier; otherwise, The current carrier is the second type of carrier; or,
  • the OFDM symbol in which the detected SSS is located and the k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated by k OFDM symbols in the time domain, determining that the current carrier is the first type of carrier; otherwise, determining The current carrier is the second type of carrier; or,
  • the OFDM symbol in which the detected PSS is located and the k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated by k-1 OFDM symbols in the time domain, and the detected OFDM symbol of the SSS is detected and detected.
  • the k-th OFDM symbol in the OFDM symbol in which the PBCH is located is separated by k OFDM symbols in the time domain, and then determines that the current carrier is the first type of carrier; otherwise, determines that the current carrier is the second type of carrier;
  • the identifying unit 81 is configured to: determine, for the frame structure type 2, the carrier type of the current carrier according to the detected synchronization signal and the number of OFDM symbols that are separated in the time domain by the detected PBCH according to the following method: The OFDM symbol in which the detected PSS is located and the k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated by K-k+A OFDM symbols in the time domain, and then the current carrier is determined to be the first type of carrier; otherwise, The current carrier is the second type of carrier; or,
  • the current carrier is determined to be the first type carrier. Otherwise, determine that the current carrier is the second type of carrier; or,
  • the K-k+A OFDM symbols are spaced in the time domain, and the detected OFDM symbol of the SSS is The k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located is separated by K-k+B OFDM symbols in the time domain, and then the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined to be the second type.
  • the identifying unit 81 is configured to: for the frame structure type 1, according to the detected synchronization signal and the detected transmission order of the PBCH in the time domain or the positional relationship of the time slot or the subframe in which the subframe is located Position relationship, determine the carrier type of the current carrier:
  • the detected OFDM symbol in which the PSS is located and the positional relationship of the OFDM symbol in the time domain or the location of the time slot or the positional relationship of the subframe in which the detected PBCH is located satisfies the first condition, determining that the current carrier is the first a type of carrier; otherwise, determining that the current carrier is the second type of carrier; or
  • the detected OFDM symbol in which the SSS is located and the positional relationship of the OFDM symbol in the time domain or the position of the slot in which the detected PBCH is located or the positional relationship of the subframe in which the subframe is located satisfies the second condition, determining that the current carrier is the first a type of carrier; otherwise, determining that the current carrier is the second type of carrier; or
  • the detected OFDM symbol in which the PSS is located and the positional relationship of the OFDM symbol in the time domain or the location of the time slot in the time domain or the positional relationship of the subframe in which the detected PBCH is located meets the first condition, and the detected SSS is located Determining the positional relationship of the OFDM symbol in the time domain or the positional relationship of the OFDM symbol in the time domain or the positional relationship of the subframe in which the detected OFDM symbol is located satisfies the second condition, and determines that the current carrier is the first type carrier; otherwise, It is determined that the current carrier is the second type of carrier.
  • the identifying unit 81 is configured to: for the frame structure type 2, according to the detected synchronization signal and the detected transmission order of the PBCH in the time domain or the positional relationship of the time slot or the subframe in which the subframe is located Location off System, determine the carrier type of the current carrier:
  • the third condition determining that the current carrier is the first a type of carrier; otherwise, determining that the current carrier is the second type of carrier; or
  • the current carrier is determined to be the first a type of carrier; otherwise, determining that the current carrier is the second type of carrier; or
  • the detected OFDM symbol in which the PSS is located and the positional relationship of the OFDM symbol in the time domain or the location of the time slot in the time domain or the positional relationship of the subframe in which the detected PBCH is located meets the third condition, and the detected SSS is located Determining the positional relationship between the OFDM symbol in the time domain or the positional relationship of the OFDM symbol in the time domain or the positional relationship of the subframe in which the detected OFDM symbol is located satisfies the fourth condition, and determines that the current carrier is the first type carrier; otherwise, It is determined that the current carrier is the second type of carrier.
  • the identifying unit 81 is configured to: for the frame structure type 1, according to the detected synchronization signal and the detected PBCH, the number of OFDM symbols spaced in the time domain, and the detected synchronization signal and detection Determine the carrier type of the current carrier by the transmission order of the PBCH in the time domain or the positional relationship of the time slot or the positional relationship of the subframe in which it is located:
  • the detected OFDM symbol in which the PSS is located and the positional relationship of the OFDM symbol in the time domain or the location of the time slot in the time domain or the positional relationship of the subframe in which the detected PBCH is located meets the first condition, and the detected PSS is located
  • the OFDM symbol and the k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated by k-1 OFDM symbols in the time domain, and then the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined to be the second carrier.
  • the current carrier is determined to be the first type carrier; otherwise, the current The carrier is a second type of carrier; or, if the detected OFDM symbol in which the PSS is located and the OFDM symbol in which the detected PBCH is located are in the time domain, The positional relationship of the time slot or the positional relationship of the subframe in which the subframe is located satisfies the first condition, and the OFDM symbol in which the detected PSS is located and the kth OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated in the time domain by
  • the identifying unit 81 is configured to: according to the frame structure type 2, according to the following method, according to the detected method The number of OFDM symbols in the time domain between the step signal and the detected PBCH, and the positional relationship between the detected synchronization signal and the detected transmission order or the time slot of the PBCH in the time domain or the positional relationship of the subframe in which the subframe is located , determine the carrier type of the current carrier:
  • the detected OFDM symbol in which the PSS is located and the positional relationship of the OFDM symbol in the time domain or the location of the time slot or the positional relationship of the subframe in which the detected PBCH is located meets the third condition, and the detected PSS is located
  • the OFDM symbol and the k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated by K-k+A OFDM symbols in the time domain, and then the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined to be The second type of carrier; or,
  • the detected OFDM symbol and the positional relationship of the OFDM symbol in the time domain or the position of the time slot or the position of the subframe in which the detected OFDM symbol is located meet the fourth condition, and the detected SSS is located.
  • the OFDM symbol and the k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated by K-k+B OFDM symbols in the time domain, and then the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined. Is the second type of carrier; or,
  • the detected OFDM symbol in which the PSS is located and the positional relationship of the OFDM symbol in the time domain or the location of the time slot or the positional relationship of the subframe in which the detected PBCH is located meets the third condition, and the detected PSS is located.
  • the OFDM symbol and the k-th OFDM symbol in the OFDM symbol in which the detected PBCH is located are separated by K-k+A OFDM symbols in the time domain, and the detected OFDM symbol of the SSS and the detected PBCH are located.
  • the transmission order of the OFDM symbol in the time domain or the positional relationship of the time slot or the positional relationship of the subframe in which the subframe is located satisfies the fourth condition, and the detected OFDM symbol of the SSS and the kth of the OFDM symbol in which the detected PBCH is located OFDM symbols, which are separated by K-k+B OFDM symbols in the time domain, and then determine that the current carrier is the first type of carrier; otherwise, determine that the current carrier is the second type of carrier;
  • the first condition includes: the OFDM symbol in which the detected OFDM symbol is advanced in the time domain and the OFDM symbol in which the PBCH is detected, or the detected OFDM symbol of the PS S and the detected PBCH are located.
  • the OFDM symbols are in different time slots of the same subframe or the same subframe, or the OFDM symbol in which the detected PSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the PSS is located advances the PBCH in the time domain.
  • the OFDM symbol in which the OFDM symbol is located, or the OFDM symbol in which the detected PSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the PSS is located is in the first time slot of the subframe, and the OFDM symbol in which the PBCH is located In the second time slot of the subframe;
  • the second condition includes: the OFDM symbol in which the detected OFDM symbol is ahead of the OFDM symbol in which the PBCH is detected in the time domain, or the OFDM symbol in which the detected SSS is located is the same as the OFDM symbol in which the detected PBCH is located. a different time slot of a subframe or the same subframe, or the detected OFDM symbol of the SSS and the detected The OFDM symbol in which the PBCH is located in the same subframe and the OFDM symbol in which the SSS is located advances the OFDM symbol in which the PBCH is located in the time domain, or the OFDM symbol in which the detected SSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located.
  • the OFDM symbol in which the SSS is located is in the first time slot of the subframe, and the OFDM symbol in which the PBCH is located is in the second time slot of the subframe.
  • the third condition includes: the OFDM symbol in which the detected PSS is located lags behind the OFDM symbol in which the detected PBCH is located in the time domain, or the detected OFDM symbol of the PS S and the detected PBCH are located.
  • the OFDM symbol is in a different time slot of an adjacent subframe or an adjacent subframe, or the OFDM symbol in which the detected PSS is located and the OFDM symbol in which the OFDM symbol is located, or the OFDM symbol in which the detected PSS is located and the detected PBCH are located.
  • the OFDM symbol is in the adjacent subframe and the OFDM symbol in which the PSS is located is located in the first time slot of the subsequent subframe, and the OFDM symbol in which the PBCH is located is located in the second time slot of the previous subframe;
  • the fourth condition includes: the OFDM symbol in which the detected SSS is located lags behind the OFDM symbol in which the detected PBCH is located in the time domain, or the OFDM symbol in which the detected SSS is located is the same as the OFDM symbol in which the detected PBCH is located.
  • the same time slot of the subframe or the same subframe, or the OFDM symbol in which the detected SSS is located is in the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the SSS is located is behind the OFDM symbol in which the PBCH is located in the time domain.
  • the OFDM symbol in which the detected SSS is located is in the same time slot of the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the SSS is located lags behind the OFDM symbol in which the PBCH is located in the time domain, or is detected.
  • the OFDM symbol in which the SSS is located is in the second time slot of the same subframe as the OFDM symbol in which the detected PBCH is located, and the OFDM symbol in which the SSS is located lags behind the OFDM symbol in which the PBCH is located in the time domain.
  • the identifying unit 81 is configured to: determine, according to the detected PBCH, a carrier type of the current carrier according to the following method:
  • the identifying unit 81 is configured to: determine, according to the type of the demodulated signal used by the detected PBCH, the carrier type of the current carrier according to the following method:
  • the detected demodulation signal used by the PBCH is the cell-specific reference signal CRS, determining that the current carrier is the first type of carrier; if the detected demodulation signal used by the PBCH is the downlink user-specific reference signal DRS, determining that the current carrier is The second type of carrier.
  • the identifying unit 81 is configured to: determine, according to the time domain and/or the frequency domain resource where the detected PBCH is located, the carrier type of the current carrier according to the following method:
  • the detected time domain of the PBCH is the first 4 OFDM symbols of a time slot, or the first subframe of a radio frame, or the second time slot of a subframe, or the first time slot of a subframe.
  • the first 4 OFDM symbols of the two slots, or The first 4 OFDM symbols of the second time slot of the first subframe in the first subframe determining that the current carrier is the first type of carrier; otherwise, determining that the current carrier is the second type of carrier; and/or,
  • the OFDM symbol on which the PBCH is transmitted is in addition to the corresponding RE of the CRS on the antenna ports 0, 1, 2, and 3. RE, then determining that the current carrier is the first type of carrier; otherwise, determining that the current carrier is the second type of carrier.
  • the identifying unit 81 is configured to: determine, according to the detected coding bit number of the PBCH, the carrier type of the current carrier according to the following method:
  • the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined to be the second type of carrier.
  • the first type of carrier is a traditional legacy carrier
  • the second type of carrier is a new carrier type NCT carrier.
  • the embodiment of the present invention provides another terminal, where the terminal includes:
  • the detecting unit 80 is configured to detect a synchronization signal on the current carrier, and detect a cell-specific reference signal CRS according to the detected synchronization signal;
  • the identifying unit 81 is configured to determine a carrier type of the current carrier according to the location relationship between the resource where the detected synchronization signal is located and the resource where the detected CRS is located, or the detected transmission subframe of the CRS.
  • the identifying unit 81 is configured to: determine, according to the location relationship between the resource where the detected synchronization signal is located and the resource where the detected CRS is located, determine the carrier type of the current carrier according to the following method:
  • Determining the carrier type of the current carrier according to whether the detected subframe in which the synchronization signal is located is the same as the subframe in which the detected CRS is located;
  • the synchronization signal includes a primary synchronization signal PSS and/or a secondary synchronization signal SSS.
  • the identifying unit 81 is configured to: determine, according to the method, the carrier of the current carrier according to the OFDM symbol in which the detected synchronization signal is located and the OFDM symbol in which the detected CRS is located, and the number of OFDM symbols spaced in the time domain. Types of: If the detected OFDM symbol of the PSS and the OFDM where the detected CRS is located, the minimum interval in the time domain is 0 OFDM symbols, determining that the current carrier is the first type of carrier; otherwise, determining that the current carrier is the second type. Carrier; or,
  • the detected OFDM symbol of the SSS and the OFDM of the detected CRS are at least 0 OFDM symbols in the time domain, determining that the current carrier is the first type of carrier; otherwise, determining that the current carrier is the second type of carrier Or, if the detected OFDM symbol of the PSS and the OFDM of the detected CRS are located, the minimum interval in the time domain is 0 OFDM symbols, and the detected OFDM symbol of the SSS and the detected CRS are located. OFDM, the minimum interval in the time domain is 0 OFDM symbols, then the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined to be the second type of carrier.
  • the identifying unit 81 is configured to: according to the OFDM symbol where the detected synchronization signal is located and the OFDM symbol where the detected CRS is located, the number of OFDM symbols spaced in the time domain, and the detected The OFDM symbol in which the synchronization signal is located and the OFDM symbol in which the detected CRS is located, the positional relationship in the time domain or the positional relationship of the time slot or the positional relationship of the subframe in which the CSR is located determines the carrier type of the current carrier:
  • Determining that the current carrier is the first class if the OFDM symbol in which the detected PSS is located and the OFDM symbol in the OFDM in which the detected CRS is located is closest to the PSS and leads the PSS, and is separated by 1 OFDM symbol in the time domain. Carrier; otherwise, determine that the current carrier is the second type of carrier; or,
  • the current carrier is the first class if the OFDM symbol in which the detected SSS is located is the OFDM symbol that is closest to the SSS and is behind the SSS in the OFDM where the detected CRS is located, and is separated by 1 OFDM symbol in the time domain. Carrier; otherwise, determine that the current carrier is the second type of carrier; or,
  • the OFDM symbol in which the detected PSS is located and the OFDM symbol in the OFDM where the detected CRS is located closest to the PSS and leads the PSS are separated by 1 OFDM symbol in the time domain, and the detected PSS is located.
  • the OFDM symbol and the OFDM symbol in the OFDM where the detected CRS is located closest to the PSS and behind the PSS are separated by 0 OFDM symbols in the time domain, and then determine that the current carrier is the first type of carrier; otherwise, determine the current carrier. Is the second type of carrier; or,
  • the OFDM symbol in which the detected SSS is located is the OFDM symbol that is closest to the SSS and the SSS is advanced in the OFDM where the detected CRS is located, the OFDM symbol is separated in the time domain, and the detected SSS is located. OFDM symbol and the OFDM symbol in which the detected CRS is located closest to the SSS and lags behind the SSS, in the time domain If the upper carrier is separated by 1 OFDM symbol, the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined to be the second type of carrier; or
  • the OFDM symbol in which the detected PSS is located and the OFDM symbol in the OFDM where the detected CRS is located closest to the PSS and leads the PSS are separated by 1 OFDM symbol in the time domain, and the detected PSS is located.
  • the OFDM symbol is the OFDM symbol that is closest to the PSS and is behind the PSS in the OFDM where the detected CRS is located, and is separated by 0 OFDM symbols in the time domain, and the detected OFDM symbol of the SSS and the detected CRS
  • the OFDM symbol in the OFDM that is closest to the SSS and leads the SSS is separated by 0 OFDM symbols in the time domain, and the OFDM symbol in which the detected SSS is located is the closest to the OFDM in which the detected CRS is located.
  • the OFDM symbol of the SSS and the SSS is separated by 1 OFDM symbol in the time domain, and then the current carrier is determined to be the first type of carrier; otherwise, the current carrier is determined to be the second type of carrier.
  • the identifying unit 81 is configured to: determine, according to the method, whether the subframe in which the detected synchronization signal is located and the subframe in which the detected CRS is located are the same, and determine a carrier type of the current carrier:
  • the current carrier is the first type of carrier; otherwise, the current carrier is determined to be the second type of carrier.
  • the identifying unit 81 is configured to: determine, according to the detected transmission subframe of the CRS, a carrier type of the current carrier according to the following method:
  • the current carrier is the first type of carrier; otherwise, the current carrier is determined to be the second type of carrier.
  • the first type of carrier is a traditional legacy carrier
  • the second type of carrier is a new carrier type NCT carrier.
  • the embodiment of the present invention provides another terminal, where the terminal includes:
  • a detecting unit 80 configured to detect a synchronization signal on a current carrier
  • the identifying unit 81 is configured to determine a carrier type of the current carrier according to the used frequency domain resource used for the synchronization signal transmission.
  • the identifying unit 81 is configured to:
  • the frequency domain resource used for the detected synchronization signal transmission is a continuous subcarrier, determining that the current carrier is the first type of carrier; otherwise, determining that the current carrier is the second type of carrier;
  • the synchronization signal includes a primary synchronization signal PSS and/or a secondary synchronization signal SSS.
  • the first type of carrier is a traditional legacy carrier
  • the second type of carrier is a new carrier type NCT carrier.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • one slot contains seven OFDM symbols:
  • the PSS is transmitted in the last OFDM symbol of the first slot of subframes 0 and 5, and the SSS is in the subframe.
  • the second trever of the first slot of 0 and 5 is transmitted by the second OFDM symbol
  • the PB CH is transmitted by the first four OFDM symbols of the second slot of subframe 0, and the first OFDM symbol and PBCH where the PSS is located OFDM symbols are adjacent (ie, 0 OFDM symbols are separated), and the OFDM symbol in which the SSS is located is separated from the first OFDM symbol in which the PBCH is located by 1 OFDM symbol;
  • the PSS is transmitted in the third OFDM symbol of the first slot of subframes 0 and 5, and the SSS is in the subframe.
  • the second OFDM symbol transmission of the first time slot of 0 and /5, the transmission position of the PBCH is the same as the legacy carrier, and the OFDM symbol where the PSS is located and the first OFDM symbol where the PBCH is located are separated by 4 OFDM symbols, where the SSS is located.
  • the OFDM symbol is separated from the first OFDM symbol where the PBCH is located by 5 OFDM symbols;
  • the number of OFDM symbols according to the OFDM symbol in which the detected PSS is located and the first OFDM symbol in which the PBCH is located, and/or the number of OFDM symbols in which the OFDM symbol in which the SSS is located and the first OFDM symbol in which the PBCH is located may be
  • the carrier type is determined by the value corresponding to the carrier, for example, the OFDM symbol in which the PSS is located and the first OFDM symbol in which the PBCH is located is separated by 0 OFDM symbols, and is a legacy carrier, otherwise (that is, 4 intervals) The symbol) is the NCT carrier.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • one slot contains seven OFDM symbols:
  • the PSS is transmitted in the last OFDM symbol of the first slot of subframes 0 and 5, and the SSS is transmitted in the second OFDM symbol of the first slot of subframes 0 and 5, PB CH is in the sub-frame.
  • the first 4 OFDM symbols of the second time slot of frame 0 are transmitted; then the relative positions of the PSS/SSS and the PBCH satisfy: 1) the OFDM symbol in which the OFDM symbol of the PSS and the SSS is ahead of the PBCH; 2) where the PSS and the SSS are located Both the OFDM symbol and the OFDM symbol in which the PBCH is located are in subframe 0; 3) the OFDM symbol in which the PSS and SSS are located and the OFDM symbol in which the PBCH is located are OFDM in which the PBCH is advanced in the time domain of the OFDM symbol in which the subframe 0JLPSS and SSS are located Symbol; 4) The OFDM symbol in which the PSS and the SSS are located and the OFDM symbol in which the PBCH
  • the PSS is transmitted in the third OFDM symbol of the first slot of subframes 1 and 6, the SSS is transmitted in the second OFDM symbol of the first slot of subframes 1 and 6, and the transmission of PBCH
  • the position is the same as the legacy carrier, and the relative positions of the PSS/SSS and the PBCH satisfy: 1) the OFDM symbol in which the PSS and the SSS are located is behind the OFDM symbol in which the PBCH is located; 2) the OFDM symbol in which the PSS and the SSS are located is different from the OFDM symbol in which the PBCH is located Subframe, 3) the OFDM symbol in which the PSS and the SSS are located and the OFDM symbol in which the PBCH is located in different subframes, and the OFDM symbol in which the PSS and the SSS are located lags behind the OFDM symbol in which the PBCH is located in the time domain, 4) the OFDM symbol in which the PSS and the SSS are located The OFDM symbol in which the PBCH is located
  • the position of the first OFDM symbol in which the detected PBCH is located in the time domain or the positional relationship of the time slot or the positional relationship of the subframe in which the PSBCH is located is used to determine the carrier type.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • one slot contains seven OFDM symbols:
  • the PSS is transmitted in the last OFDM symbol of the first slot of subframes 0 and 5, and the SSS is transmitted in the second OFDM symbol of the first slot of subframes 0 and 5, PB CH is in the sub-frame.
  • the first 4 OFDM symbols of the second slot of frame 0 are transmitted; then the relative positions of the PSS/SSS and the PBCH satisfy: 1) the OFDM symbol in which the PSS is located is adjacent to the first OFDM symbol in which the PBCH is located (ie, interval 0) OFDM symbol), the OFDM symbol in which the SSS is located is separated from the first OFDM symbol in which the PBCH is located by 1 OFDM symbol; 2) the OFDM symbol in which the OFDM symbol in which the PSS and the SSS are located leads the PBCH; 3) the OFDM symbol in which the PSS and the SSS are located The OFDM symbol with the PBCH is in subframe 0; 4)
  • the OFDM symbol has the OFDM symbol in which the PBCH is located in the time domain; 5) the OFDM symbol in which the PSS and the SSS are located and the OFDM symbol in which the PBCH is located in the first time slot of the subframe 0 in the OFDM symbol in which the subframe 0JLPSS and the SSS are located, The OFDM symbol in which the PBCH is located is in the second time slot of subframe 0;
  • the PSS/SSS and the PBCH are as follows: 1) The OFDM symbol in which the PSS is located is separated from the first OFDM symbol in which the PBCH is located by 8 OFDM symbols, and the OFDM symbol in which the SSS is located and the first in the PBCH are located.
  • OFDM symbols are separated by 7 OFDM symbols; 2) OFDM symbols in which PSS and SSS are located are behind OFDM symbols in which PBCH is located; 3) OFDM symbols in which PSS and SSS are located are in different subframes from OFDM symbols in which PBCH is located; 4) PSS and SSS
  • the OFDM symbol in which the OFDM symbol is located and the OFDM symbol in which the PBCH is located is in a different subframe, and the OFDM symbol in which the PSS and the SSS are located is in the time domain.
  • the OFDM symbol in which the OFDM symbol in which the PBCH is located is in the first time slot of the subframe 1, and the OFDM in which the PBCH is located.
  • the symbol is in the second time slot of the subframe 0; at this time, according to the detected OFDM symbol of the PSS and/or the SSS and the transmission order of the OFDM symbol in which the detected PBCH is located in the time domain, and/or the time of the transmission Gap
  • the relationship between the relationship and/or the subframe in which the subframe is located, and/or, the symbol interval between the OFDM symbol in which the PSS and/or the SSS is located and the first OFDM symbol in which the detected PBCH is located satisfies the relationship of the carrier. Determine the carrier type.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • one slot contains seven OFDM symbols:
  • the PSS is transmitted in the last OFDM symbol of the first slot of subframes 0 and /6, and the SSS is transmitted in the second OFDM symbol of the first slot of subframes 0 and /6;
  • CRS may Transmitted on antenna port 0 or port 0, 1 or port 0, 1, 2 or port 0, 1, 2, 3, as shown in Figures 2a, 2b, ie CRS at least in each time slot of each subframe Transmission on the 1st and 5th OFDM symbols (3 or 4 antenna port transmission, also transmitted on the 2nd and 4th OFDM symbols), at this time, the OFDM symbol where the PSS is located and the nearest CRS of the advanced PSS is located in the OFDM Symbol (ie first The 5th OFDM symbol of each slot is separated by 1 OFDM symbol, adjacent to the OFDM symbol of the last CRS of the backward PSS (ie, the first OFDM symbol of the second slot) (ie, 0 OFDM symbols are separated) , that is, the OFDM symbol in which the PSS is located is separated from the
  • the CRS is transmitted only on antenna port 0 in a period of 5 ms, assuming that the PSS on the NCT carrier is transmitted on the third OFDM symbol of the first slot in subframes 0 and 6, and the SSS is in subframes 0 and 6.
  • the second OFDM symbol of the first time slot is transmitted, and if the transmission subframe of the CRS is also the subframes 0 and 6, at this time, the OFDM symbol of the OFDM symbol where the PSS is located and the latest CRS of the advanced PSS (ie, the first The first OFDM symbol of the time slot is separated by 1 OFDM symbol, and the OFDM symbol of the last CRS of the backward PSS (ie, the 5th OFDM symbol of the first slot) is separated by 1 OFDM symbol, and the OFDM symbol of the SSS is located.
  • the OFDM symbol (ie, the first OFDM symbol of the first slot) in which the latest CRS of the leading SSS is located is separated by 0 OFDM symbols, and the OFDM symbol of the nearest CRS of the backward SSS (ie, the 5th of the first slot) OFDM symbols) are separated by 2 OFDM symbols; if the transmission subframe of the CRS is subframes 1 and 7, at this time, the OFDM symbol in which the PSS is located and the OFDM symbol in which the latest CRS is located (ie, the first slot of the subframe 1) 1 OFDM symbol) Every 7 OFDM symbols, SSS OFDM symbols where the OFDM symbols (i.e., a sub-frame 1 slot 1 OFDM symbol) interval of 8 OFDM symbols located nearest a CRS;
  • the definition of which carrier may be satisfied according to the number of OFDM symbols of the OFDM symbol in which the detected PSS is located and the OFDM symbol in which the most recent (including the leading and trailing) CRS is located, and/or according to the detected SSS
  • the number of OFDM symbols in which the OFDM symbol is located and the OFDM symbol in which the most recent (including leading and backward) CRSs are located satisfies the definition of which carrier is used to determine the carrier type; or, based on the detected OFDM symbol in which the PSS is located
  • the number of OFDM symbols spaced from the OFDM symbol in which the last CRS of the backward and/or leading PSS is located satisfies the definition of which carrier is described above, and/or the OFDM symbol in which the detected SSS is located and the latest CRS of the backward and/or advanced SSS
  • the carrier type is determined by the number of OFDM symbols in which the OFDM symbol interval satisfies the definition of which carrier.
  • the beneficial effects of the present invention include:
  • the terminal may be located in a positional relationship between a resource in which the synchronization signal detected on the current carrier is located and a resource in which the detected PBCH is located, or according to the PBCH detected on the current carrier. Or according to the location relationship between the resource where the synchronization signal detected on the current carrier is located and the resource where the detected CRS is located, or according to the transmission subframe of the CRS detected on the current carrier, or according to the detected on the current carrier.
  • the frequency domain resource used for the synchronization signal transmission determines the carrier type of the current carrier, thereby solving the problem of how the terminal identifies the carrier type.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention is in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • a computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
  • 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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  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention porte sur un procédé et un dispositif de reconnaissance du type d'onde porteuse. Le mode de réalisation de la présente invention concerne le domaine des technologies de communication sans fil, et résout le problème de comment reconnaître le type d'onde porteuse. Selon cette invention, en fonction de la relation d'emplacement entre des ressources dans lesquelles un signal synchrone détecté et un canal de diffusion physique (PBCH) détecté se trouvent sur l'onde porteuse courante, ou du PBCH détecté sur l'onde porteuse courante, ou de la relation d'emplacement entre des ressources dans lesquelles le signal synchrone détecté et un signal de référence spécifique de cellule (CRS) détecté se trouvent sur l'onde porteuse courante, ou de la sous-trame de transmission du CRS détecté sur l'onde porteuse courante, ou d'un domaine fréquentiel utilisé par le signal synchrone détecté sur l'onde porteuse courante, le type de l'onde porteuse courante peut être déterminé par un terminal, et le problème de comment reconnaître le type d'onde porteuse peut être résolu.
PCT/CN2013/075304 2012-05-08 2013-05-08 Procédé et dispositif de reconnaissance de type d'onde porteuse WO2013166961A1 (fr)

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CN109196922B (zh) * 2016-06-01 2021-03-23 高通股份有限公司 通过同步信道和广播信道的资源选择来传送假设
EP3905800A1 (fr) * 2016-06-01 2021-11-03 QUALCOMM Incorporated Transmission d'hypothèses par sélection de ressources de canaux de synchronisation et de diffusion
US11218236B2 (en) 2016-06-01 2022-01-04 Qualcomm Incorporated Time division multiplexing of synchronization channels
US11563505B2 (en) 2016-06-01 2023-01-24 Qualcomm Incorporated Time division multiplexing of synchronization channels
US11616674B2 (en) 2016-06-01 2023-03-28 Qualcomm Incorporated Time division multiplexing of synchronization channels

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