WO2014179955A1 - Procédé et appareil destinés à la détection et à l'envoi d'informations - Google Patents

Procédé et appareil destinés à la détection et à l'envoi d'informations Download PDF

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Publication number
WO2014179955A1
WO2014179955A1 PCT/CN2013/075358 CN2013075358W WO2014179955A1 WO 2014179955 A1 WO2014179955 A1 WO 2014179955A1 CN 2013075358 W CN2013075358 W CN 2013075358W WO 2014179955 A1 WO2014179955 A1 WO 2014179955A1
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Prior art keywords
time
code sequence
resource
candidate
actual
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PCT/CN2013/075358
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English (en)
Chinese (zh)
Inventor
官磊
薛丽霞
李强
马瑞泽⋅大卫
周永行
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华为技术有限公司
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Priority to CN201380064611.6A priority Critical patent/CN104956598B/zh
Priority to PCT/CN2013/075358 priority patent/WO2014179955A1/fr
Publication of WO2014179955A1 publication Critical patent/WO2014179955A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0079—Acquisition of downlink reference signals, e.g. detection of cell-ID
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/70735—Code identification
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B2001/70724—Spread spectrum techniques using direct sequence modulation featuring pilot assisted reception

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a method and apparatus for information detection and transmission. Background technique
  • LTE Long Term Evolution
  • the UE User Equipment
  • cell RRM Radio Resource Management
  • RRM Radio Resource Management
  • RRM measurement of reference signal received power or RRM measurement of reference signal reception quality, and the like. Therefore, RRM's mobility management capabilities are an important part of the LTE system.
  • the specific execution process of the cell RRM measurement by the UE in the connected state is as follows:
  • Step a The UE initiates the RRM measurement according to the eNB (Evolved NodeB) indication;
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • Step d The UE performs handover according to the indication of the eNB, where the eNB determines whether to make the UE perform cell handover according to the measurement result reported by the UE.
  • the UE synchronizes with the eNB by detecting the PSS and the SSS sent by the eNB, and determines a PCI (Physical Cell Indicator).
  • the PSS provides three sequences, and the SSS provides a total of 168 sequence combinations through a combination of two short sequences. Therefore, 504 cell identifiers (ie, 504 PCIs) can be provided in the prior art.
  • the period in which the base station transmits the PSS and the SSS is 5 ms, and each of the two OFDM (Orthogonal Frequency Division Multiplexing) symbols in the six resource blocks occupying the carrier center is transmitted. And when the base station sends the CRS, each subframe needs
  • the resource location of the reference signal in a resource block in the LTE system is as shown in FIG. 1A.
  • heterogeneous networks are also emerging.
  • the main mode of heterogeneous networks is to deploy a large number of micro cells or pico cells in a macro cell.
  • Macro cells and Pico cells can be used. ⁇ Use the same frequency point deployment, you can also use different frequency point deployment (mainly in this mode), where Macro cell is mainly used to provide coverage and real-time data service services, Pico cell is mainly used A service that provides high-rate data services.
  • a heterogeneous network when determining the cell identity before performing RRM measurement, if the UE still determines the cell identity according to the PSS and SSS, the following defects exist:
  • the Pico cell deployed in the prior art is relatively dense, and the PSS and the SSS have a short transmission period. Therefore, when the UE receives the PSS and the SSS, the interference is large, and the UE determines the cell identifier according to the PSS and the SSS. Long, low efficiency and poor accuracy. At the same time, because the probability of overlapping time slots resources occupied by carriers is large, the UE may also have large interference when receiving PSS and SSS. In addition, when the UE determines the cell identifier according to the PSS and the SSS, there is a problem that the time is long, the efficiency is low, and the accuracy is poor. Summary of the invention
  • the embodiment of the invention provides a method and a device for detecting and transmitting information, which are used to solve the problem that the UE has a long time, low efficiency and poor accuracy when determining the cell identifier according to the PSS and the SSS in the prior art. .
  • a method for information detection including: obtaining at least one candidate time-frequency a source, and determining sequence information corresponding to the at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; and the at least one candidate time-frequency resource And detecting a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the sequence information corresponding to the at least one candidate time-frequency resource, and obtaining an actual orthogonal code in the actual scrambling code sequence and the actual orthogonal code sequence group. a sequence; determining a cell identity based on at least the detected actual scrambling code sequence and the actual orthogonal code sequence.
  • the candidate time-frequency resource is at least one channel state information reference signal CSI-RS resource of the first antenna port; or, the candidate time-frequency resource is at least two Orthogonal frequency division multiplexing OFDM symbols in which the secondary synchronization signal SSS is located.
  • the at least one candidate time-frequency resource is a different time-frequency resource in a subframe; or The at least one candidate time-frequency resource is a time-frequency resource in a different subframe.
  • the acquiring the at least one candidate time-frequency resource includes: pre-storing the at least one candidate time-frequency And acquiring the at least one candidate time-frequency resource according to the signaling sent by the received base station.
  • determining sequence information corresponding to the at least one candidate time-frequency resource specifically: pre-storing And the sequence information corresponding to the at least one candidate time-frequency resource is obtained according to the signaling sent by the received base station.
  • the candidate scrambling code sequence is a pseudo random sequence, or an initialization sequence of a pseudo random sequence
  • the candidate orthogonal code sequence group is a Walsh Walsh sequence group.
  • the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the sequence information are
  • the candidate scrambling code sequence is a sequence generated in a frequency domain direction of the candidate time-frequency resource corresponding to the sequence information; and the candidate orthogonal code sequence in the candidate orthogonal code sequence group is A sequence obtained by spreading the generated candidate scrambling code sequence in the time domain direction of the time-frequency resource.
  • a seventh possible implementation manner when the determined at least one candidate is detected on the at least one candidate time-frequency resource
  • the method includes: determining, according to the detected actual scrambling code sequence, the actual orthogonal code sequence, a cell identifier; or, according to the detected actual scrambling code sequence, the actual orthogonal The code sequence, and the actual scrambling code sequence and the actual time-frequency resources occupied by the actual orthogonal code sequence, determine the cell identity.
  • the candidate time-frequency resource includes N time-frequency sub-resources, and each time-frequency sub-resource Corresponding to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 1.
  • the candidate scrambling code sequence is: each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information a sequence generated in a frequency domain direction; a candidate orthogonal code sequence in the candidate orthogonal code sequence group is a time domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information,
  • the candidate scrambling code sequence is subjected to a spread spectrum generated sequence.
  • the determining, by the candidate time-frequency resource, the determined sequence information corresponding to the candidate time-frequency resource is included
  • the actual orthogonal code sequence in the cross-code sequence group includes: detecting, on each time-frequency sub-resource of the candidate time-frequency resource, a candidate scrambling code sequence included in the sequence information corresponding to the time-frequency sub-resource, and obtaining the actual The scrambling code sequence, and each of the time-frequency sub-resources of the candidate time-frequency resource, according to the correspondence between the time-frequency sub-resource and the candidate orthogonal code sequence group, detecting the corresponding candidate orthogonal code sequence group, obtaining each combination
  • the candidate time-frequency resource includes a first time-frequency sub-resource group and a second time-frequency sub-resource group
  • the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource
  • the orthogonal code sequences are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal.
  • the first group of time-frequency sub-resources includes each of the CSI-RS resources of the at least two second antenna ports All or part of one CSI-RS resource, the second group of time-frequency sub-resources including all or part of each CSI-RS resource of at least two second antenna ports.
  • At least two of the candidate time-frequency resources partially overlap each other; and/or at least The two time-frequency sub-resources partially overlap each other.
  • the actual 4 special code sequence and the actual orthogonal code sequence group are utilized
  • the CSI-RS transmitted on the time-frequency sub-resource on the occupied actual time-frequency resource performs one or any combination of channel state information measurement, synchronization, and radio resource management RRM measurement.
  • the seventeenth possible implementation manner according to the detected actual scrambling code sequence and the actual orthogonal code sequence And determining the configuration information of the cell corresponding to the cell identifier, where the configuration information includes one or any combination of a switch, an activation/sleep state, a transmission power level, a carrier type, and a duplex type of the corresponding cell.
  • the synchronization channel is detected to obtain a synchronization sequence; according to the synchronization sequence and/or the synchronization And acquiring a time-frequency position of the at least one candidate time-frequency resource; or, according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence, Determining a cell identifier; or determining channel candidate information of the candidate scrambling code and/or the candidate orthogonal code according to the obtained synchronization sequence.
  • the second aspect provides a method for sending information, including: acquiring at least one candidate time-frequency resource, and determining sequence information corresponding to the at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code a sequence and at least one candidate orthogonal code sequence group; determining, from the at least one candidate time-frequency resource, an actual time-frequency resource, at least one candidate scrambling code sequence included in sequence information corresponding to the actual time-frequency resource, and at least one Determining an actual scrambling code sequence and an actual orthogonal code sequence in the candidate orthogonal code sequence group; and transmitting, on the actual time-frequency resource, the actual scrambling code sequence and the actual orthogonal code sequence to the user equipment UE, Determining, by the UE, a cell identity according to at least the actual 4 code sequence and the actual orthogonal code sequence.
  • the candidate time-frequency resource is at least one channel state information reference signal CSI-RS resource of the first antenna port; or, the candidate time-frequency resource is at least two Orthogonal frequency division multiplexing OFDM symbols in which the secondary synchronization signal SSS is located.
  • the at least one candidate time-frequency resource is a different time-frequency resource in one subframe; or The at least one candidate time-frequency resource is a time-frequency resource in a different subframe.
  • the candidate scrambling code sequence is a pseudo random sequence, or an initialization sequence of a pseudo random sequence;
  • the candidate orthogonal code sequence group is a Walsh Walsh sequence group.
  • the UE is configured to perform the at least the actual scrambling code sequence and the actual orthogonal code sequence Determining the cell identifier, the method includes: determining, by the UE, the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence; or: causing the UE to perform the orthogonal according to the actual scrambling sequence The code sequence, and the actual scrambling code sequence and the actual time-frequency resources occupied by the actual orthogonal code sequence, determine the cell identity.
  • the candidate time-frequency resource includes N time-frequency sub-resources, and each time-frequency sub-resource Corresponding to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 1.
  • a seventh possible implementation manner in a frequency domain direction of each time-frequency sub-resource in the actual time-frequency resource Generating, respectively, an actual scrambling code sequence corresponding to each of the time-frequency sub-resources; and generating, in the time domain direction of each time-frequency sub-resource in the actual time-frequency resource, the generated and the each time-frequency
  • the actual scrambling code sequence corresponding to the sub-resource is separately spread by the actual orthogonal code sequence corresponding to each of the time-frequency sub-resources.
  • the actual scrambling code sequence and the location are sent to the UE on the actual time-frequency resource
  • the actual orthogonal code sequence includes: transmitting, on each time-frequency sub-resource in the actual time-frequency resource, an actual scrambling code sequence corresponding to the actual time-frequency resource, and in the actual And transmitting, according to the correspondence between the time-frequency sub-resource and the actual orthogonal code sequence group, the actual orthogonal code sequence group corresponding to the time-frequency sub-resource in the time-frequency sub-resource in the time-frequency resource The actual orthogonal code sequence.
  • the UE is configured to perform the at least the actual scrambling code sequence and the actual orthogonal code sequence Determining the cell identifier, the method includes: determining, by the UE, the cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence corresponding to each time-frequency sub-resource; or The actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual scrambling code sequence and the actual orthogonal code sequence.
  • the actual time-frequency resource occupied is used to determine the cell identity.
  • the candidate time-frequency resource includes a first time-frequency sub-resource group and a second time-frequency sub-resource group, where The first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, and the candidate orthogonality corresponding to the time-frequency sub-resource included in the first time-frequency sub-resource group
  • the code sequences are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal.
  • the first group of time-frequency sub-resources includes each of the CSI-RS resources of the at least two second antenna ports. All or part of the CSI-RS resource, the second group of time-frequency sub-resources including all or part of each CSI-RS resource of the at least two second antenna ports.
  • At least two of the candidate time-frequency resources partially overlap each other; and/or at least two of the times The frequency sub-resources partially overlap each other.
  • the UE is configured according to the actual scrambling code sequence and the actual orthogonal code
  • the sequence determines the configuration information of the cell corresponding to the cell identifier, where the configuration information includes a switch, an active/sleep state, a transmit power level, a carrier type, and a duplex type of the corresponding cell.
  • the configuration information includes a switch, an active/sleep state, a transmit power level, a carrier type, and a duplex type of the corresponding cell.
  • the synchronization sequence is sent on the synchronization channel; and the UE is configured according to the synchronization sequence and And obtaining a time-frequency location of the at least one candidate time-frequency resource, where the time-frequency resource location of the synchronization sequence is located; or, causing the UE to detect the actual scrambling code sequence according to the obtained synchronization information. And determining, by the actual orthogonal code sequence, a cell identifier; or, determining, by the UE, channel estimation information of the candidate scrambling code and/or the candidate orthogonal code according to the obtained synchronization sequence.
  • a user equipment UE including: a first determining unit, configured to acquire at least one candidate time-frequency resource, and determine sequence information corresponding to the at least one candidate time-frequency resource, where the sequence information is Included at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; the detecting unit, configured to detect, on the at least one candidate time-frequency resource, the determined sequence information corresponding to the at least one candidate time-frequency resource a candidate scrambling code sequence and a candidate orthogonal code sequence group, obtaining an actual scrambling code sequence and an actual orthogonal code sequence in the actual orthogonal code sequence group; and a second determining unit, configured to use at least the detected actual scrambling code The sequence and the actual orthogonal code sequence determine a cell identity.
  • the candidate time-frequency resource acquired by the first determining unit is at least one channel state information reference signal CSI-RS resource of the first antenna port; or
  • the candidate time-frequency resource acquired by a determining unit is an orthogonal frequency division multiplexing OFDM symbol in which at least two secondary synchronization signals SSS are located.
  • the at least one candidate time-frequency resource acquired by the first determining unit is different time in one subframe
  • the at least one candidate time-frequency resource acquired by the first determining unit is a time-frequency resource in a different subframe.
  • the acquiring, by the first determining unit, the at least one candidate time-frequency resource specifically: pre-storing Describe at least one candidate time-frequency resource; or, according to the received base station
  • the signaling acquires the at least one candidate time-frequency resource.
  • the determining, by the first determining unit, determining a sequence corresponding to the at least one candidate time-frequency resource includes: pre-storing sequence information corresponding to the at least one candidate time-frequency resource; or acquiring sequence information corresponding to the at least one candidate time-frequency resource according to the received signaling sent by the base station.
  • the candidate scrambling code sequence determined by the first determining unit is a pseudo random sequence, or is a pseudo An initialization sequence of the random sequence;
  • the candidate orthogonal code sequence group determined by the first determining unit is a Walsh Walsh sequence group.
  • the candidate scrambling code sequence and the candidate candidate included in the sequence information determined by the first determining unit a code sequence group
  • the candidate scrambling code sequence is a sequence generated in a frequency domain direction of the candidate time-frequency resource corresponding to the sequence information
  • the candidate orthogonal code sequence in the candidate orthogonal code sequence group is A sequence generated by spreading the generated candidate scrambling code sequence in a time domain direction of the candidate time-frequency resource.
  • the detecting unit is specifically configured to: determine, received on the candidate time-frequency resource a candidate scrambling code sequence and a candidate orthogonal code sequence included in the sequence information corresponding to the candidate time-frequency resource and a candidate orthogonal code sequence in the candidate orthogonal code sequence group, respectively, in the scrambling code sequence and the orthogonal code sequence in the orthogonal code sequence group When the code sequences match, the matched candidate scrambling code sequence and the candidate orthogonal code sequence are taken as the actual 4 U code sequence and the actual orthogonal code sequence.
  • the determining unit is specifically configured to: according to the detected actual scrambling code sequence, Determining a cell identifier according to the actual orthogonal code sequence; or, according to the detected actual scrambling code sequence, the actual orthogonal code sequence, and the actual scrambling code sequence and the actual orthogonal code sequence
  • the actual time-frequency resource determines the cell identity.
  • the candidate time-frequency resource determined by the first determining unit includes N time-frequency sub-resources, Each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 35.
  • the candidate scrambling code sequence determined by the first determining unit is, each candidate time-frequency resource corresponding to the sequence information a sequence generated in a frequency domain direction of the time-frequency sub-resource;
  • the candidate orthogonal code sequence in the candidate orthogonal code sequence group determined by the first determining unit is, each candidate time-frequency resource corresponding to the sequence information The time domain direction of the time-frequency sub-resources, the sequence generated by spreading the generated candidate scrambling code sequences.
  • the detecting unit is specifically configured to: detect and detect each time-frequency sub-resource of the candidate time-frequency resource a candidate scrambling code sequence included in the sequence information corresponding to the time-frequency sub-resource, obtaining an actual scrambling code sequence, and each time-frequency sub-resource of the candidate time-frequency resource, according to the time-frequency sub-resource and the candidate orthogonal code sequence group Corresponding relationship, detecting a corresponding candidate orthogonal code sequence group, and obtaining an actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource.
  • the determining unit is specifically configured to: according to the detected actual sequence corresponding to each time-frequency sub-resource, Determining the cell identifier; or determining, according to the detected actual column corresponding to each time-frequency sub-resource, and the actual scrambling code sequence and the actual time-frequency resource occupied by the actual orthogonal code sequence, determining the cell identifier i only.
  • the candidate time-frequency resource acquired by the first determining unit includes a first time-frequency sub-resource group and a second a time-frequency sub-resource group, where the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, and the time included in the first time-frequency sub-resource group Frequency resource
  • the corresponding candidate orthogonal code sequences are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal.
  • the first group of time-frequency sub-resources includes each of the CSI-RS resources of the at least two second antenna ports All or part of one CSI-RS resource, the second group of time-frequency sub-resources including all or part of each CSI-RS resource of at least two second antenna ports.
  • the at least two candidate time-frequency resources acquired by the first determining unit are mutually Partially overlapping; and/or, at least two of the time-frequency sub-resources partially overlap each other.
  • the communications unit is further configured to send by using the source
  • the CSI-RS performs one or any combination of channel state information measurement, synchronization, and radio resource management RRM measurement.
  • the determining unit is specifically configured to: according to the detected actual scrambling code sequence And determining, by the actual orthogonal code sequence, configuration information of the cell corresponding to the cell identifier, where the configuration information includes a switch, an active/sleep state, a transmit power level, a carrier type, and a duplex type of the corresponding cell.
  • the configuration information includes a switch, an active/sleep state, a transmit power level, a carrier type, and a duplex type of the corresponding cell.
  • the acquiring unit is further configured to: detect a synchronization channel to obtain a synchronization sequence; Or determining a cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence; or determining, according to the obtained synchronization sequence, Channel candidate information of the candidate scrambling code and/or the candidate orthogonal code.
  • a base station including: a first acquiring unit, configured to acquire at least one candidate time-frequency resource, and determine sequence information corresponding to the at least one candidate time-frequency resource, where The sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group.
  • the second acquiring unit is configured to determine an actual time-frequency resource from the at least one candidate time-frequency resource acquired by the first acquiring unit, Determining an actual scrambling code sequence and an actual orthogonal code sequence from at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group included in the sequence information corresponding to the actual time-frequency resource; Sending, by the second acquiring unit, the actual scrambling code sequence and the actual orthogonal code sequence to the user equipment UE, so that the UE is at least according to the actual scrambling code, on the actual time-frequency resource determined by the second acquiring unit.
  • the sequence and the actual orthogonal code sequence determine a cell identity.
  • the candidate time-frequency resource acquired by the first acquiring unit is at least one channel state information reference signal CSI-RS resource of the first antenna port; or
  • the candidate time-frequency resource acquired by an acquiring unit is an orthogonal frequency division multiplexing OFDM symbol in which at least two secondary synchronization signals SSS are located.
  • the at least one candidate time-frequency resource acquired by the first acquiring unit is different time in one subframe
  • the at least one candidate time-frequency resource acquired by the first acquiring unit is a time-frequency resource in a different subframe.
  • the candidate scrambling code sequence determined by the first acquiring unit is a pseudo random sequence, or is a pseudo An initialization sequence of the random sequence;
  • the candidate orthogonal code sequence group determined by the first acquiring unit is a Walsh Walsh sequence group.
  • the actual scrambling code sequence determined by the second acquiring unit and the actual actual The time domain direction on the time-frequency resource, and the generated actual scrambling code sequence is spread by the actual orthogonal code sequence.
  • the sending unit is specifically configured to: enable the UE to perform the actual scrambling code sequence according to the second And determining, by the column and the actual orthogonal code sequence, a cell identifier; or, causing the UE to perform, according to the actual scrambling code sequence, the actual orthogonal code sequence, the actual scrambling code sequence, and the actual orthogonal code.
  • the actual time-frequency resource occupied by the sequence determines the cell identity.
  • the candidate time-frequency resource acquired by the first acquiring unit includes N time-frequency sub-resources, Each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 1.
  • a seventh possible implementation manner in a frequency domain direction of each time-frequency sub-resource in the actual time-frequency resource Generating, respectively, an actual scrambling code sequence corresponding to each of the time-frequency sub-resources; and generating, in the time domain direction of each time-frequency sub-resource in the actual time-frequency resource, the generated and the each time-frequency
  • the actual scrambling code sequence corresponding to the sub-resource is separately spread by the actual orthogonal code sequence corresponding to each of the time-frequency sub-resources.
  • the sending unit is specifically configured to: in each of the actual time-frequency resources And transmitting, to the UE, an actual scrambling code sequence corresponding to the actual time-frequency resource, and each time-frequency sub-resource in the actual time-frequency resource, according to the time-frequency sub-resource and the The correspondence between the actual orthogonal code sequence groups is performed, and the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to the time-frequency sub-resource is transmitted.
  • the sending unit is specifically configured to: enable the UE to perform the time-frequency according to each The actual scrambling code sequence corresponding to the resource and the actual orthogonal code sequence corresponding to each time-frequency sub-resource, determining a cell identifier; or, causing the UE to perform an actual scrambling code sequence corresponding to each time-frequency sub-resource, The actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual scrambling code sequence and the actual time-frequency resource occupied by the actual orthogonal code sequence, determine a cell identifier.
  • the candidate time-frequency resource acquired by the first acquiring unit includes a first time-frequency sub-resource group and a second time a frequency sub-resource group, wherein the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively comprise at least one time-frequency sub-resource, and the time-frequency included in the first time-frequency sub-resource group
  • the candidate orthogonal code sequences corresponding to the sub-resources are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal.
  • the first group of time-frequency sub-resources includes each of the CSI-RS resources of the at least two second antenna ports. All or part of the CSI-RS resource, the second group of time-frequency sub-resources including all or part of each CSI-RS resource of the at least two second antenna ports.
  • the at least two candidate time-frequency resources acquired by the first acquiring unit partially overlap each other; and Or, at least two of the time-frequency sub-resources acquired by the first acquiring unit partially overlap each other.
  • the sending unit is further configured to: enable the UE to perform the actual scrambling code according to the actual The sequence and the actual orthogonal code sequence determine configuration information of the cell corresponding to the cell identifier, where the configuration information includes a switch, an active/sleep state, a transmit power level, a carrier type, and a duplex type of the corresponding cell.
  • the configuration information includes a switch, an active/sleep state, a transmit power level, a carrier type, and a duplex type of the corresponding cell.
  • the first acquiring unit is further configured to: send a synchronization acquiring station on the synchronization channel Determining, by the UE, the cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence; or And causing the UE to determine channel estimation information of the candidate scrambling code and/or the candidate orthogonal code according to the obtained synchronization sequence.
  • An information detection method is: acquiring at least one candidate time-frequency resource, and determining sequence information corresponding to at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group Detecting the determined at least one candidate time-frequency resource Obtaining a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the sequence information corresponding to the at least one candidate time-frequency resource, obtaining an actual orthogonal code sequence in the actual scrambling code sequence and the actual orthogonal code sequence group; The actual scrambling sequence and the actual orthogonal code sequence determine the cell identity.
  • each candidate time-frequency resource can be any position of the carrier center, or even not limited to six resource blocks in the carrier center, any two If the probability of overlapping the candidate time-frequency resources is small, the interference between the signals transmitted on any two candidate time-frequency resources is small, and therefore, the interference when the UE detects the actual scrambling code sequence and the actual orthogonal code sequence is reduced.
  • the time required for the UE to determine the cell identity is shortened, the efficiency of determining the cell identity is improved, and the accuracy of the determined cell identity is improved.
  • the cell identity is determined by the actually detected scrambling code sequence and the orthogonal code sequence. And the scrambling code sequence and the orthogonal code sequence can reduce the interference, and therefore, the UE is further determined in the heterogeneous network.
  • a method for transmitting information is: acquiring at least one candidate time-frequency resource, and determining sequence information corresponding to at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group Determining the actual time-frequency resource from the at least one candidate time-frequency resource, determining the actual scrambling code sequence from the at least one candidate scrambling code sequence included in the sequence information corresponding to the actual time-frequency resource, and the at least one candidate orthogonal code sequence group An actual orthogonal code sequence; on the actual time-frequency resource, the actual scrambling code sequence and the actual orthogonal code sequence are sent to the user equipment UE, so that the UE determines the cell identifier according to at least the actual scrambling code sequence and the actual orthogonal code sequence, so
  • Each candidate time-frequency resource may be any position of the carrier center, or may not be limited to 6 resource blocks in the carrier center, and any two candidate time-frequency resources are less likely to overlap, and in any two candidate times The interference
  • the cell identity is the actual interference transmitted.
  • the code sequence and the actual orthogonal code sequence are determined, and the scrambling code sequence and the orthogonal code sequence can reduce interference, and therefore, further solving the problem that when the UE determines the cell identity in the heterogeneous network, the time consuming is long. Low efficiency and poor accuracy.
  • FIG. 1A is a schematic diagram of resource locations of reference signals in a resource block in an existing LTE system
  • FIG. 1B is a schematic diagram of A time-frequency resources including Al and A2 time-frequency sub-resources according to an embodiment of the present invention
  • B time-frequency resource includes a schematic diagram of time-frequency sub-resources of B1 and B2
  • FIG. 2 is a detailed flowchart of information detection in an embodiment of the present invention
  • 3A is a schematic diagram of resource locations of reference signals in a resource block in an LTE system according to an embodiment of the present invention
  • FIG. 3B is a schematic diagram of the coexistence of sequence information and CSI-RS in the embodiment of the present invention
  • FIG. 3C is a schematic diagram of the case where the sequence information and the CSI-RS coexist without blurring according to the embodiment of the present invention
  • FIG. 4 is a schematic diagram of information transmission according to an embodiment of the present invention; Detailed flow chart;
  • FIG. 5 is a schematic structural diagram of functions of a UE for detecting information according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a function of a base station for transmitting information according to an embodiment of the present invention. detailed description
  • a method for detecting information and a message are provided in the embodiment of the present invention, in order to solve the problem that the UE determines the cell identifier in the heterogeneous network, which is time-consuming, inefficient, and inaccurate.
  • the method of sending can effectively avoid the problem that the UE has a long time, low efficiency and poor accuracy when determining the cell identity.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • Step 200 Acquire at least one candidate time-frequency resource, and determine sequence information corresponding to at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group;
  • Step 210 Detect a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource on the at least one candidate time-frequency resource, and obtain the actual scrambling code sequence and the actual orthogonal code.
  • Step 220 At least the cell identification is determined according to the detected actual 4 code sequence and the actual orthogonal code sequence.
  • the type of the candidate time-frequency resource that is acquired by the UE is multiple.
  • the candidate time-frequency resource is at least one CSI-RS of the first antenna port (Channel State Information-Reference Signal).
  • the channel state information reference signal is a resource; or, the candidate time-frequency resource is an OFDM symbol in which at least two SSSs are located.
  • the candidate time-frequency resource is at least one CSI-RS of the first antenna port
  • the CSI-RS resource of the first antenna port has the most resource unit of the CSI-RS resource, and therefore, the candidate time-frequency resource is preferably At least one 8-antenna port CSI-RS resource of an antenna port, as shown in FIG. 1A, A and B, that is, A and B are combined into one 8-antenna port CSI-RS resource.
  • different cells can select different 8-antenna port CSI-RS resources, so that reference signals of different cells can achieve interference coordination, enhance the detection performance of reference signals, and can also reuse existing CSI-RS. Resource location, simplified system design and implementation complexity.
  • the candidate time-frequency resource is a CSI-RS resource that can also be another antenna port (such as a 4-antenna port or a smaller number of antenna ports). It can also be an OFDM symbol in which at least two SSSs are located.
  • the at least one candidate time-frequency resource acquired by the UE may be different time-frequency resources in one subframe, for example, different 8-antenna port CSI-RS resources in one subframe; It may also be a time-frequency resource in different subframes, for example, an 8-antenna port CSI-RS resource of subframe 1 and an 8-antenna port CSI-RS resource of subframe 2.
  • the method for the UE to obtain the at least one candidate time-frequency resource is used in multiple manners.
  • at least one candidate time-frequency resource may be pre-stored in the UE, and for example, the UE may receive the The signaling sent by the base station to obtain at least one candidate time-frequency resource, where the signaling sent by the base station may be RRC (Radio Resource Control) signaling, or may be MAC (Medium Access Control).
  • Layer signaling which can also be physical layer signaling (such as physical downlink control channel, etc.).
  • the UE determines the sequence information corresponding to the at least one candidate time-frequency resource.
  • the sequence information corresponding to the at least one candidate time-frequency resource is pre-stored in the UE, and, for example, according to the received
  • the signaling sent by the base station acquires sequence information corresponding to the at least one candidate time-frequency resource, where the signaling sent by the base station may be RRC signaling, MAC layer signaling, or physical layer signaling (such as physical downlink). Control channel, etc.).
  • candidate scrambling code sequences preferably a pseudo-random sequence, or an initialization sequence of a pseudo-random sequence, or an initialization parameter in an initialization sequence, where the candidate scrambling code sequence is
  • the pseudo-random sequence it may be an M sequence or a Gold sequence.
  • the candidate scrambling code sequence may be Equation 1, or may be an initialization sequence of the Gold sequence, that is, Formula 2, or may be an initialization parameter in the initialization sequence, that is, '.
  • c mit 2 10 -(7-(w s +l)+/+l)-(2-A3 ⁇ 4 w +l)+2-A3 ⁇ 4 w (Formula 2)
  • c mit represents the initialization sequence of the Gold sequence; it is the initialization parameter.
  • the candidate orthogonal code sequence group is a Walsh sequence group.
  • the Walsh sequence group is a binary sequence group
  • the two orthogonal code sequences included are ⁇ 1, 1 ⁇ and ⁇ 1, -1 ⁇ , respectively
  • the candidate orthogonal code sequence group is ( ⁇ 1, 1 ⁇ , ⁇ 1 , -1 ⁇ ).
  • the Walsh sequence group may be a binary code group, a quaternary code group, or an octal code group, where any two Walsh sequence groups may be sequence groups of the same dimension, or For a sequence group of different dimensions, for example, a Walsh sequence group corresponding to one candidate time-frequency resource is a binary code group, and a Walsh sequence group corresponding to another candidate time-frequency resource is a quaternion code group.
  • each candidate time-frequency resource corresponds to sequence information, and the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group
  • each candidate time-frequency resource carries at least one candidate scrambling code sequence and At least one candidate orthogonal code sequence group
  • the candidate time-frequency resource there are multiple ways for the candidate time-frequency resource to carry the candidate scrambling code sequence and the candidate orthogonal code sequence group.
  • the candidate scrambling code sequence is, in the sequence to which the candidate is located.
  • the candidate orthogonal code sequence in the candidate orthogonal code sequence group is a candidate interference generated in the time domain direction of the candidate time-frequency resource corresponding to the sequence information
  • the sequence generated by spreading the code sequence is specifically: For an OFDM symbol, the scrambling code sequence is a sequence generated on a plurality of resource blocks including the OFDM symbol, and the orthogonal code sequence is OFDM in each resource element.
  • a 4 sigma sequence is first generated on a plurality of resource blocks including the OFDM symbol, for example, a central 6 resource blocks on one OFDM symbol or all resource blocks on the carrier are generated.
  • the code sequence is then subjected to orthogonal code spreading in the time domain direction for the scrambling code sequence.
  • Each resource block in the resource block has a resource unit for carrying the above scrambling code, and the frequency domain scrambling code sequence length is 100, and then, for each of the 100 resource units carrying the scrambling code sequence.
  • the orthogonal sequence code is used for time domain spreading.
  • the orthogonal sequence code is a binary orthogonal sequence code, the result of the spreading is that the scrambling sequence can occupy two OFDM in the time domain. symbol.
  • step 210 the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource are detected on the at least one candidate time-frequency resource, where Obtaining the actual scrambling code sequence and the actual orthogonal code sequence in the actual orthogonal code sequence group may also be selecting the actual scrambling code sequence and the actual orthogonal code sequence in the actual orthogonal code sequence group.
  • the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource are detected on the at least one candidate time-frequency resource, and obtained or There are multiple ways to select the actual 4th code sequence and the actual orthogonal code sequence group in the actual orthogonal code sequence group.
  • the scrambling code sequence and the orthogonal code sent by the base station received on the candidate time-frequency resource are determined.
  • the orthogonal code sequences in the sequence group are matched with the combination of the candidate scrambling code sequence included in the sequence information corresponding to the candidate time-frequency resource and the candidate orthogonal code sequence in the candidate orthogonal code sequence group, respectively.
  • the candidate scrambling code sequence and the candidate orthogonal code sequence are used as an actual scrambling code sequence and an actual orthogonal code sequence. And determining, in the candidate time-frequency resource, the scrambling code sequence sent by the base station and the orthogonal code sequence in the orthogonal code sequence group, and the candidate scrambling code sequence and candidate included in the sequence information corresponding to the candidate time-frequency resource respectively.
  • the maximum likelihood detection algorithm can be used, and the correlation algorithm can also be used.
  • the two candidate time-frequency resources obtained or selected are: a first candidate time-frequency resource and a second candidate time-frequency resource, and the sequence information corresponding to the first candidate time-frequency resource includes a first scrambling code sequence and a second scrambling code.
  • the sequence and a binary Walsh sequence group ( ⁇ 1, 1 ⁇ , ⁇ 1, -1 ⁇ ), and the sequence information corresponding to the second candidate time-frequency resource includes a third scrambling code sequence, a fourth scrambling code sequence, and a binary Walsh
  • the first combination, the second combination, the third group Combining the fourth combination and performing matching the scrambling code sequence sent by the base station and the orthogonal code sequence in the orthogonal code sequence group received by the UE on the second candidate time-frequency resource are respectively combined with the fifth combination, the sixth combination, and the
  • the seventh combination and the eighth combination are matched, and the candidate scrambling code sequence and the candidate orthogonal code sequence included in the matched combination are respectively used as an actual scrambling code sequence and an actual orthogonal code sequence, wherein the first combination is (
  • step 220 there are multiple ways to determine the cell identifier according to at least the detected actual scrambling code sequence and the actual orthogonal code sequence.
  • the cross-code sequence determines the cell identity, or determines the cell identity according to the detected actual 4 code sequence, the actual orthogonal code sequence, and the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence.
  • the two actual time-frequency resources obtained or selected are: the first actual time-frequency resource and the second actual time-frequency resource, and the actual scrambling code sequence carried on the first actual time-frequency resource is 0 and 1, in the The actual scrambling sequence carried on the actual time-frequency resource is 2 and 3.
  • the actual orthogonal code sequence group carried on each actual time-frequency resource is a set of binary Walsh sequence groups ( ⁇ 1, -1 ⁇ ).
  • the UE may determine
  • the maximum number of cell identifiers is: (0+ ⁇ 1, 1 ⁇ ), (0+ ⁇ 1, -1 ⁇ ), (1+ ⁇ 1, 1 ⁇ ), (1+ ⁇ 1, -1) ⁇ ) , ( 2+ ⁇ 1, 1 ⁇ ) , ( 2+ ⁇ 1, -1 ⁇ ) , (3+ ⁇ 1, 1 ⁇ ) , (3+ ⁇ 1, -1 ⁇ ).
  • the two actual time-frequency resources obtained or selected are: the first actual time-frequency resource and the second actual time-frequency resource, and the actual scrambling code sequence carried on the first actual time-frequency resource is 0 and 1, in the The actual scrambling sequence carried on the actual time-frequency resource is 0 and 1, and the actual orthogonal code sequence group carried on each actual time-frequency resource is a set of binary Walsh sequence groups ( ⁇ 1, -1 ⁇ ).
  • the UE may determine The maximum number of cell identifiers is: (first actual time-frequency resource +0+ ⁇ 1, 1 ⁇ ), (first actual time-frequency resource +0+ ⁇ 1, -1 ⁇ ), (first actual Time-frequency resource +1+ ⁇ 1 , 1 ⁇ ), (first actual time-frequency resource +1+ ⁇ 1 , -1 ⁇ ), (second actual time-frequency resource +0+ ⁇ 1 , 1 ⁇ ), (first 2 actual time-frequency resources +0+ ⁇ 1 , -1 ⁇ ), (second actual time-frequency resource +1+ ⁇ 1
  • the cells that are orthogonal to any two orthogonal code sequences are orthogonal, and any two orthogonal code sequences are the same but the cells with different scrambling sequences are pseudo-orthogonal.
  • the cross-design design reduces the interference between cells, and the pseudo-orthogonalization design improves the multiplexing rate of time-frequency resources while providing a certain number of cell identifiers.
  • the orthogonalization design can be used between the cells included in the cell cluster 1 to reduce the cell cluster.
  • the orthogonal design includes multiple orthogonal sequence codes in one orthogonal sequence code group, or different candidate time-frequency resources may be used if the number of orthogonal sequence codes is insufficient.
  • the orthogonal sequence code design is performed; the pseudo-orthogonalization design can be adopted between the cells included in the cell cluster 2, and the multiplexing rate of the time-frequency resources is improved when a certain number of cell identifiers are provided.
  • the candidate time-frequency resource includes N time-frequency sub-resources, and each time-frequency sub-resource is respectively associated with at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource.
  • N is an integer greater than one.
  • a candidate time-frequency resource is an 8-antenna port CSI-RS resource
  • an 8-antenna port CSI-RS resource includes four time-frequency sub-resources, and the time-frequency sub-resources are frequency-divided, as shown in FIG. A and B
  • A includes two time-frequency sub-resources: A1 time-frequency sub-resource and A2 time-frequency sub-resource (as shown in FIG. 1B)
  • B includes two time-frequency sub-resources: B1 time-frequency sub-resource and B2 time-frequency sub-resources (as shown in Figure 1C).
  • the candidate scrambling code sequence is a sequence generated in a frequency domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information.
  • the candidate orthogonal code sequence in the candidate orthogonal code sequence group is a time domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information, and a sequence generated by spreading the generated candidate scrambling code sequence .
  • the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource are detected on the candidate time-frequency resource.
  • the sequence information corresponding to the time-frequency sub-resource is detected on each time-frequency sub-resource of the candidate time-frequency resource.
  • the candidate scrambling code sequence obtains the actual scrambling code sequence, and detects the corresponding candidate orthogonal code sequence according to the correspondence between the time-frequency sub-resource and the candidate orthogonal code sequence group on each time-frequency sub-resource of the candidate time-frequency resource. Group, obtain the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource.
  • the cell identifier is determined according to at least the detected actual scrambling code sequence and the actual orthogonal code sequence, and at least according to the detected each time-frequency sub-resource
  • the actual 4 code sequence, and the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource determine the cell identity; or, according to at least each time-frequency sub-interval code sequence detected And the actual time-frequency sub-resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence to determine the cell identity.
  • a and B, A shown in FIG. 1A may include A1 and A2 shown in FIG. 1B, and may not include any time-frequency sub-resource.
  • B may include B1 and B2 shown in FIG. 1C. It is also possible not to include any time-frequency sub-resources.
  • the candidate time-frequency resources The first time-frequency sub-resource group and the second time-frequency sub-resource group are respectively included, and the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, and the first time-frequency sub-resource
  • the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the group are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal, In the above case, by making the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group orthogonal, the interference between the cells can be reduced,
  • one candidate time-frequency resource C shown in FIG. 3A is divided into two time-frequency sub-resources, and each time-frequency sub-resource has two orthogonal code sequences, and a total of four kinds of sequence information are provided, as shown in FIG. 3B.
  • the possible orthogonal sequence codes respectively provided by the AP ID 0 and the AP ID 3 are orthogonal, that is, the two orthogonal code sequences corresponding to the first time-frequency sub-resource are the same, and the second time-frequency sub-
  • the two orthogonal code sequences corresponding to the resource are also the same; the possible orthogonal sequence codes provided by AP ID 0 and AP ID1 are not completely orthogonal, that is, the two orthogonal frequencies corresponding to the first time-frequency sub-resource
  • the sequence is the same.
  • the two orthogonal sequences corresponding to the second time-frequency sub-resource are orthogonal.
  • the scrambling code sequence corresponding to the candidate time-frequency sub-resource may be the same or pseudo-orthogonal.
  • the reference signals corresponding to different cells are pseudo-orthogonal even if the orthogonal code sequences are the same. Since the possible orthogonal sequence codes respectively provided by AP ID 0 and AP ID1 are not completely orthogonal, the candidate time-frequency resources combined by the above-mentioned time-frequency sub-resources are partially orthogonal to each other, compared to completely orthogonalization.
  • the design (AP ID 0 and AP ID 3) can improve the bearer efficiency of the cell identity. In the actual application, the combination of the restricted codewords can improve the bearer efficiency of the cell identity, which is not described here.
  • the first set of time-frequency sub-resources includes all or one of the CSI-RS resources of the at least two second antenna ports, in order to avoid the false alarm problem of the cell detection corresponding to the cell identifier.
  • the second set of time-frequency sub-resources includes all or part of each of the CSI-RS resources of the at least two second antenna ports.
  • each time-frequency sub-resource corresponds to a set of binary orthogonal code sequences
  • the candidate time-frequency resource C corresponds The sequence information is co-existed with the CSI-RS of the 4-antenna port. As shown in FIG.
  • FIG. 3B the sequence information corresponding to the candidate time-frequency resource D and the CSI-RS of the 4-antenna port coexist without blurring, as shown in FIG. 3C.
  • FIG. 3B is divided according to the 4-antenna port CSI-RS resources, that is, each group of time-frequency sub-resources includes only one complete 4-antenna port.
  • Each part of the CSI-RS 4 antenna port CSI-RS resources For the case shown in FIG.
  • the UE is When the cell corresponding to the obtained AP ID 0 is detected, the obtained cell of the AP ID 2 is also detected. Therefore, in the case of FIG. 3A, the false alarm problem of the cell detection corresponding to the cell identifier may occur; for the situation shown in FIG.
  • the 4 antenna port CSI-RS resource is configured, since the first group of time-frequency sub-resources and the second group of time-frequency sub-resources are divided, the occurrence of the orthogonal code sequence combination is avoided, and the cell corresponding to the cell identifier is avoided. False alarm problem detected.
  • the second antenna port is 4 ports.
  • At least two candidate time-frequency resources partially overlap each other; and/or at least two time-frequency sub-resources Partially overlapping each other.
  • a candidate time-frequency resource is an 8-antenna port CSI-RS resource is divided into four time-frequency sub-resources, and the specific positions of the four time-frequency sub-resources in the frequency domain are: ⁇ 0, 1 ⁇ , ⁇ 1, 2 ⁇ , ⁇ 2, 3 ⁇ and ⁇ 3, 0 ⁇
  • the frequency domain position mentioned above represents the position label of the resource unit in the frequency domain direction of the 8-antenna port CSI-RS resource, as can be seen from the above
  • One time-frequency sub-resource partially overlaps with the second time-frequency sub-resource
  • the second time-frequency sub-resource partially overlaps with the third-time-frequency sub-resource
  • the third-time-frequency sub-resource partially overlaps with the fourth-time-frequency sub-resource.
  • the candidate time-frequency resource includes four time-frequency sub-resources.
  • the candidate time-frequency resource may include more than four time-frequency sub-resources, and is not detailed here.
  • the CSI-RS resource can coexist with the sequence information corresponding to the determined cell identifier, and maintains the current role of the CSI-RS resource, that is, CSI measurement. Therefore, in the embodiment of the present invention, the UE may utilize the time frequency of the actual time-frequency resource occupied by the actual sequence and the actual orthogonal code sequence group.
  • the CSI-RS resource sent on the sub-resource performs one or any combination of channel state information measurement, synchronization, and RRM measurement; that is, the UE can utilize the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence group.
  • the CSI-RS resource transmitted on the partial time-frequency sub-resource on the actual time-frequency resource performs one or any combination of channel state information measurement, synchronization, and RRM measurement.
  • the UE may perform the following operations:
  • the RRM measurement is performed based on the determined cell identity.
  • the UE Since the time interval for the base station to transmit sequence information twice on the actual time-frequency resource is long, and the transmission density of each transmission sequence information is large, the UE can obtain more by one measurement or fewer measurement times.
  • the RRM measurement result of the cell therefore, reduces the time taken for the RRM measurement, saves the power of the UE, and at the same time, reduces the interference between the cells by orthogonalizing the cell identity corresponding to the cell, thereby improving the interference.
  • the accuracy of RRM measurements is the accuracy of RRM measurements.
  • the UE determines, according to the detected actual scrambling code sequence and the actual orthogonal code sequence, configuration information of the cell corresponding to the cell identity, where the configuration information includes a switch, an active/sleep state, a transmit power level, and a carrier of the corresponding cell.
  • the configuration information includes a switch, an active/sleep state, a transmit power level, and a carrier of the corresponding cell.
  • the configuration information is a switch of the corresponding cell, and may be specifically indicated by an orthogonal code sequence in the orthogonal code sequence group in the sequence information, for example, the orthogonal code sequence ⁇ 1, 1 ⁇ is an opening indication of the corresponding cell,
  • the cross-code sequence ⁇ 1, -1 ⁇ is the indication of the closing of the corresponding cell; it can also be indicated by a different scrambling code sequence, for example, the scrambling code sequence 0 is the opening indication of the corresponding cell, and the scrambling code sequence 1 is the closing indication of the corresponding cell. It can also be indicated by the candidate time-frequency resource location.
  • the UE determines the configuration information of the cell corresponding to the cell identifier according to the detected actual scrambling code sequence and the actual orthogonal code sequence, if the information is the switch of the corresponding cell, the UE may timely discover that the base station is about to close. Close, and reselect to other open cells or base stations as soon as possible to maintain mobility performance. At the same time, the power used to turn off the cell transmission sequence information can also be reduced when calculating the RSSI (Received Signal Strength Indicator). , to ensure the accuracy of the RSRQ (Reference Signal Received Quality) measurement.
  • RSSI Receiveived Signal Strength Indicator
  • the configuration information may also indicate other information, such as an activation/sleep state, a transmission power level, a carrier type, or a duplex type, and the indication manner is similar to the foregoing. , no longer here - detailed.
  • data can be normally transmitted, for example, a synchronization signal, a broadcast signal, a unicast signal for scheduling, and a reference signal; when the base station is in a dormant state, the base station cannot normally transmit data, but only transmits
  • the longer period reference signal is used by the UE to discover and measure the cell.
  • the carrier type is divided into a backward compatible carrier type and a new carrier type.
  • the new carrier type can be classified into a new carrier type that can be independently accessed and a new carrier type that cannot be independently accessed, and cannot be used for a lower version of the UE. In.
  • the UE directly acquires at least one candidate time-frequency resource and directly determines sequence information corresponding to the at least one candidate time-frequency resource, the UE does not know the coarse position of each candidate time-frequency resource, especially in the frequency domain. Position, therefore, there is a problem that the time-consuming resource is relatively long and the efficiency is low.
  • the coarse position of the candidate time-frequency resource can be determined by the high-layer signaling.
  • the UE in order to reduce the acquisition of at least one candidate time-frequency resource and determine at least one The time consumed by the sequence information corresponding to the candidate time-frequency resource is increased, and the UE can detect the synchronization channel to obtain the synchronization sequence, and obtain at least one candidate time-frequency resource according to the synchronization sequence and/or the time-frequency resource location where the synchronization sequence is located.
  • the frequency position is specifically: after detecting the synchronization channel to obtain the synchronization sequence, the UE can obtain the central frequency band position and the rough timing information of the currently detected carrier, and then acquire the time-frequency position of the at least one candidate time-frequency resource according to the timing information.
  • the UE may further determine the cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence; or, according to the obtained synchronization sequence, determine channel estimation information of the candidate scrambling code and/or the candidate orthogonal code. If the candidate time-frequency resource includes N time-frequency sub-resources, the UE determines the cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence. And identifying, according to the obtained synchronization information, the detected actual scrambling code sequence corresponding to each time-frequency sub-resource.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • Step 400 Acquire at least one candidate time-frequency resource, and determine sequence information corresponding to at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group;
  • Step 410 Determine an actual time-frequency resource from the at least one candidate time-frequency resource, determine an actual scrambling code from the at least one candidate scrambling code sequence included in the sequence information corresponding to the actual time-frequency resource, and the at least one candidate orthogonal code sequence group. Sequence and actual orthogonal code sequence;
  • Step 420 Send the actual scrambling code sequence and the actual orthogonal code sequence to the user equipment UE on the actual time-frequency resource, so that the UE determines the cell identifier according to at least the actual scrambling code sequence and the actual orthogonal code sequence.
  • the type of the candidate time-frequency resource that is acquired by the base station is multiple.
  • the candidate time-frequency resource is at least one CSI-RS resource of the first antenna port; or, the candidate time-frequency
  • the resource is an OFDM symbol in which at least two SSSs are located.
  • the candidate time-frequency resource is at least one CSI-RS of the first antenna port
  • the CSI-RS resource of the first antenna port has the most resource unit of the CSI-RS resource, and therefore, the candidate time-frequency resource is preferably At least one 8-antenna port CSI-RS resource of an antenna port.
  • different cells can select different 8-antenna port CSI-RS resources, so that reference signals of different cells can achieve interference coordination, enhance the detection performance of reference signals, and can also reuse existing CSI-RS. Resource location, simplified system design and implementation complexity.
  • the candidate time-frequency resource is a CSI-RS resource that can also be another antenna port (such as a 4-antenna port or a smaller number of antenna ports). It can also be an OFDM symbol in which at least two SSSs are located.
  • the at least one candidate time-frequency resource acquired by the base station may be different time-frequency resources in one subframe, for example, different 8-antenna ports CSI-RS in one subframe.
  • the source may also be a time-frequency resource in different subframes, for example, an 8-antenna port CSI-RS resource of subframe 1 and an 8-antenna port CSI-RS resource of subframe 2.
  • step 400 the method for the at least one candidate time-frequency resource to be used by the base station is different.
  • at least one candidate time-frequency resource may be pre-stored in the base station.
  • the base station determines the sequence information corresponding to the at least one candidate time-frequency resource.
  • the sequence information corresponding to the at least one candidate time-frequency resource is pre-stored in the base station.
  • candidate scrambling code sequences preferably a pseudo-random sequence, or an initialization sequence of a pseudo-random sequence, or an initialization parameter in an initialization sequence, where the candidate scrambling code sequence is
  • the pseudo-random sequence it may be an M sequence or a Gold sequence.
  • the candidate scrambling code sequence may be Equation 1, or may be an initialization sequence of the Gold sequence, that is, Equation 2 mentioned above, and may also be initialization in the initialization sequence.
  • the parameter which is N.
  • the candidate orthogonal code sequence group is a Walsh sequence group.
  • the Walsh sequence group is a binary sequence group, and the two orthogonal code sequences are respectively ⁇ 1, 1 ⁇ and ⁇ 1, -1 ⁇ , and the candidate orthogonal code sequence group is ( ⁇ 1, 1 ⁇ , ⁇ 1, -1 ⁇ );
  • the Walsh sequence group is a quaternion sequence group, and the four orthogonal code sequences included are ⁇ 1, 1, 1, 1 ⁇ , ⁇ 1, 1, -1, -1 ⁇ , ⁇ 1, -1, 1, -1 ⁇ and ⁇ 1, -1, -1, 1 ⁇
  • the candidate orthogonal code sequence group is ( ⁇ 1, 1, 1 ⁇ , ⁇ 1, 1, -1, - 1 ⁇ , ⁇ 1, -1, 1, -1 ⁇ and ⁇ 1, -1, -1, 1 ⁇ ).
  • the Walsh sequence group may be a binary code group, a quaternary code group, or an octal code group, where any two Walsh sequence groups may be sequence groups of the same dimension, or For a sequence group of different dimensions, for example, a Walsh sequence group corresponding to one candidate time-frequency resource is a binary code group, and a Walsh sequence group corresponding to another candidate time-frequency resource is a quaternion code group.
  • each candidate time-frequency resource corresponds to sequence information, and the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group
  • each candidate time-frequency resource carries at least one candidate scrambling code sequence and At least one candidate orthogonal code sequence group, in the embodiment of the present invention,
  • the candidate time-frequency resource carries the candidate scrambling code sequence and the candidate orthogonal code sequence group in multiple manners.
  • the actual scrambling code sequence is generated in the frequency domain direction of the actual time-frequency resource;
  • the domain is an OFDM symbol, and a scrambling code sequence is first generated on a plurality of resource blocks including the OFDM symbol, and then the scrambling code sequence on the OFDM subcarrier of each resource unit is subjected to orthogonal code spreading in the time domain direction.
  • a 4 sigma sequence is first generated on a plurality of resource blocks including the OFDM symbol, for example, a central 6 resource blocks on one OFDM symbol or all resource blocks on the carrier are generated.
  • the code sequence is then subjected to orthogonal code spreading in the time domain direction for the scrambling code sequence.
  • the frequency domain scrambling sequence is used for time domain spreading, and if the orthogonal sequence code is a binary orthogonal sequence The code, then the result of the spreading, is that the above scrambling code sequence can occupy two OFDM symbols in the time domain.
  • step 420 there are multiple ways for the UE to determine the cell identifier according to at least the actual scrambling code sequence and the actual orthogonal code sequence.
  • the UE is configured according to the actual scrambling sequence and the actual orthogonal code.
  • the sequence determines the cell identifier; or, the UE determines the cell identifier according to the actual scrambling code sequence, the actual orthogonal code sequence, and the actual scrambling code sequence and the actual time-frequency resources occupied by the actual orthogonal code sequence.
  • the two actual time-frequency resources obtained are: the first actual time-frequency resource and the second actual time-frequency resource, and the actual scrambling code sequence carried on the first actual time-frequency resource is 0 and 1, in the second actual The actual scrambling sequence carried on the time-frequency resource is 2 and 3.
  • the actual orthogonal code sequence group carried on each actual time-frequency resource is a set of binary Walsh sequence groups ( ⁇ 1, -1 ⁇ ), ⁇ 1, 1 ⁇ ), the base station makes the UE determine the maximum number of cell identifiers, which are: (0+ ⁇ 1, 1 ⁇ ), (0+ ⁇ 1, -1 ⁇ ), (1+ ⁇ 1, 1 ⁇ ) , (1+ ⁇ 1, -1 ⁇ ) , ( 2+ ⁇ 1, 1 ⁇ ) , ( 2+ ⁇ 1, -1 ⁇ ) , (3+ ⁇ 1, 1 ⁇ ) , (3+ ⁇ 1 , -1 ⁇ ) .
  • the two actual time-frequency resources obtained are: the first actual time-frequency resource and the second actual time-frequency resource, and the actual scrambling code sequence carried on the first actual time-frequency resource is 0 and 1, in the second actual The actual scrambling sequence carried on the time-frequency resource is 0 and 1, and the actual orthogonal code sequence group carried on each actual time-frequency resource is a set of binary Walsh sequence groups ( ⁇ 1, -1 ⁇ ), ⁇ 1 , 1 ⁇ ) , the base station determines that the cell identifier determined by the UE is at most eight, specifically: (the first actual time-frequency resource +0+ ⁇ 1 , 1 ⁇ ), (the first actual time-frequency resource +0+ ⁇ 1 , -1 ⁇ ) , (first actual time-frequency resource +1+ ⁇ 1 , 1 ⁇ ), (first actual time-frequency resource +1+ ⁇ 1 , -1 ⁇ ), (second actual time-frequency resource + 0+ ⁇ 1 , 1 ⁇ ) , (second actual time-frequency resource +0+ ⁇ 1 , 1 ⁇ )
  • the cells that are orthogonal to any two orthogonal code sequences are orthogonal, and any two orthogonal code sequences are the same but the cells with different scrambling sequences are pseudo-orthogonal.
  • the cross-design design reduces the interference between cells, and the pseudo-orthogonalization design improves the multiplexing rate of time-frequency resources while providing a certain number of cell identifiers.
  • the orthogonalization design can be used between the cells included in the cell cluster 1 to reduce the cell cluster.
  • the orthogonal design includes multiple orthogonal sequence codes in one orthogonal sequence code group, or different candidate time-frequency resources may be used if the number of orthogonal sequence codes is insufficient.
  • the orthogonal sequence code design is performed; the pseudo-orthogonalization design can be adopted between the cells included in the cell cluster 2, and the multiplexing rate of the time-frequency resources is improved when a certain number of cell identifiers are provided.
  • the candidate time-frequency resource includes N time-frequency sub-resources, and each time-frequency sub-resource is respectively associated with at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource.
  • N is an integer greater than one.
  • a candidate time-frequency resource is an 8-antenna port CSI-RS resource
  • an 8-antenna port CSI-RS resource includes four time-frequency sub-resources, and the time-frequency sub-resources are frequency-divided, as shown in FIG. A and B
  • A includes two time-frequency sub-resources: A1 time-frequency sub-resource and A2 time-frequency sub-resource (as shown in FIG. 1B)
  • B includes two time-frequency sub-resources: B1 time-frequency sub-resource and B2 time-frequency sub-resources (as shown in Figure 1C).
  • the base station separately generates a corresponding time-frequency sub-resource in the frequency domain direction of each time-frequency sub-resource in the actual time-frequency resource.
  • the actual scrambling sequence in the time domain direction of each time-frequency sub-resource in the actual time-frequency resource, the actual scrambling code sequence corresponding to each time-frequency sub-resource is generated, and each time-frequency sub-resource is used.
  • the corresponding actual orthogonal code sequences are separately spread.
  • the base station sends the actual scrambling code sequence and the actual orthogonal code sequence to the UE on the actual time-frequency resource, each time in the actual time-frequency resource.
  • the base station makes the UE at least according to the corresponding relationship between the time-frequency sub-resource and the actual orthogonal code sequence group.
  • the UE determines the cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence corresponding to each time-frequency sub-resource; or And the actual time-frequency resource occupied by the UE according to the actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual scrambling code sequence and the actual orthogonal code sequence. Determine the cell identity.
  • the number of time-frequency sub-resources included in the candidate time-frequency resource can be reduced, and the positive limit is simultaneously limited.
  • the number of cross-code sequence groups can be reduced, and the positive limit is simultaneously limited.
  • the candidate time-frequency resources include the first time-frequency sub-carrier.
  • the candidate orthogonal code sequences corresponding to the sub-resources are orthogonal to each other, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal, in the above case,
  • the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are orthogonal to each other, and the interference between the cells can be reduced, by using the time-frequency sub-resources included in the second time-frequency sub-resource group
  • the candidate orthogonal code sequences are identical or pseudo-orthogonal, which can improve the multiplexing rate of time-frequency resources and provide more cell identification.
  • one candidate time-frequency resource C shown in FIG. 3A is divided into two time-frequency sub-resources, and each time-frequency sub-resource has two orthogonal code sequences, and a total of four kinds of sequence information are provided, as shown in FIG. 3B.
  • the possible orthogonal sequence codes respectively provided by the AP ID 0 and the AP ID 3 are orthogonal, that is, the two orthogonal code sequences corresponding to the first time-frequency sub-resource are the same, and the second time-frequency sub-
  • the two orthogonal code sequences corresponding to the resource are also the same; the possible orthogonal sequence codes provided by AP ID 0 and AP ID1 are not completely orthogonal, that is, the two orthogonal frequencies corresponding to the first time-frequency sub-resource
  • the sequence is the same.
  • the two orthogonal sequences corresponding to the second time-frequency sub-resource are orthogonal.
  • the scrambling code sequence corresponding to the candidate time-frequency sub-resource may be the same or pseudo-orthogonal.
  • the reference signals corresponding to different cells are pseudo-orthogonal even if the orthogonal code sequences are the same. Since the possible orthogonal sequence codes respectively provided by AP ID 0 and AP ID1 are not completely orthogonal, the candidate time-frequency resources combined by the above-mentioned time-frequency sub-resources are partially orthogonal to each other, compared to completely orthogonalization.
  • the design (AP ID 0 and AP ID 3) can improve the bearer efficiency of the cell identity. In the actual application, the combination of the restricted codewords can improve the bearer efficiency of the cell identity, which is not described here.
  • the first set of time-frequency sub-resources includes all or one of the CSI-RS resources of the at least two second antenna ports, in order to avoid the false alarm problem of the cell detection corresponding to the cell identifier.
  • the second set of time-frequency sub-resources includes all or part of each of the CSI-RS resources of the at least two second antenna ports.
  • Each time-frequency sub-resource corresponds to a set of binary orthogonal code sequences, and the sequence information corresponding to the candidate time-frequency resource C coexists with the CSI-RS of the 4-antenna port, as shown in FIG.
  • FIG. 3B is divided according to the 4-antenna port CSI-RS resources, that is, each group of time-frequency sub-resources includes only one complete 4-antenna port.
  • Each part of the CSI-RS 4 antenna port CSI-RS resources are divided according to the 4-antenna port CSI-RS resources.
  • the area sends the PCIO identifier, that is, the sequence information corresponding to the AP ID 0, and the cell also sends a CSI-RS resource (AP ID 2) of the 4-antenna port, when the UE detects the obtained cell corresponding to the AP ID 0.
  • the obtained AP ID 2 cell is also detected. Therefore, in the case of FIG. 3A, a false alarm problem of the cell detection corresponding to the cell identifier may occur; for the case shown in FIG. 3C, the 4 antenna port CSI-RS resource is configured.
  • the second antenna port is 4 ports.
  • At least two candidate time-frequency resources partially overlap each other; and/or at least two time-frequency sub-resources Partially overlapping each other.
  • a candidate time-frequency resource is an 8-antenna port CSI-RS resource is divided into four time-frequency sub-resources, and the specific positions of the four time-frequency sub-resources in the frequency domain are: ⁇ 0, 1 ⁇ , ⁇ 1, 2 ⁇ , ⁇ 2, 3 ⁇ and ⁇ 3, 0 ⁇
  • the frequency domain position mentioned above represents the position label of the resource unit in the frequency domain direction of the 8-antenna port CSI-RS resource, as can be seen from the above
  • One time-frequency sub-resource partially overlaps with the second time-frequency sub-resource
  • the second time-frequency sub-resource partially overlaps with the third-time-frequency sub-resource
  • the third-time-frequency sub-resource partially overlaps with the fourth-time-frequency sub-resource.
  • the UE determines the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, the actual scrambling code sequence and the actual orthogonal code sequence part sequence information bear the cell identifier, and some part of the sequence information does not carry the d And the area identifier, the UE further determines the configuration information of the cell corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, where the configuration information includes a switch, an active/sleep state, a transmit power level, a carrier type, and One or any combination of duplex types.
  • the configuration information is an active/sleep state of the corresponding cell, and may be specifically indicated by an orthogonal code sequence in the orthogonal code sequence group in the sequence information, for example, the orthogonal code sequence ⁇ 1, 1 ⁇ is the activation of the corresponding cell.
  • the status indication, the orthogonal code sequence ⁇ 1, -1 ⁇ is the dormant status indication of the corresponding cell; or may be indicated by a different scrambling code sequence, for example, the scrambling code sequence 0 is an activation status indication of the corresponding cell, and the scrambling code sequence 1
  • the sleep state indication of the corresponding cell may also be indicated by the candidate time-frequency resource location.
  • the base station enables the UE to determine the configuration information of the d and the area corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence. If the information is the switch of the corresponding cell, the UE can timely discover that the base station is about to be closed, and reselect the other as soon as possible. The opened cell or base station maintains mobility performance. At the same time, the power used to turn off the cell transmission sequence information can also be reduced when calculating the RSSI to ensure the accuracy of the RSRQ measurement.
  • the above is an example in which the configuration information is a switch of the corresponding cell.
  • the configuration information may also indicate other information, such as an activation/sleep state, a transmission power level, a carrier type, or a duplex type, and the indication manner is similar to the foregoing. , no longer here - detailed.
  • data can be normally transmitted, for example, a synchronization signal, a broadcast signal, a unicast signal for scheduling, and a reference signal; when the base station is in a dormant state, the base station cannot normally transmit data, but only transmits
  • the longer period reference signal is used by the UE to discover and measure the cell.
  • the carrier type is divided into a backward compatible carrier type and a new carrier type.
  • the new carrier type can be classified into a new carrier type that can be independently accessed and a new carrier type that cannot be independently accessed, and cannot be used for a lower version of the UE. In.
  • the UE directly acquires at least one candidate time-frequency resource and directly determines sequence information corresponding to the at least one candidate time-frequency resource, the UE does not know the coarse position of each candidate time-frequency resource, especially in the frequency domain. Position, therefore, there is a problem that the time-consuming resource is relatively long and the efficiency is low.
  • the coarse position of the candidate time-frequency resource can be determined by the high-layer signaling.
  • the UE in order to reduce the acquisition of at least one candidate time-frequency resource and determine at least one The time consumed by the sequence information corresponding to the candidate time-frequency resource is increased, and the UE can detect the synchronization channel to obtain the synchronization sequence, and obtain at least one candidate time-frequency resource according to the synchronization sequence and/or the time-frequency resource location where the synchronization sequence is located.
  • the frequency position is specifically: after detecting the synchronization channel to obtain the synchronization sequence, the UE can obtain the central frequency band position and the rough timing information of the currently detected carrier, and then acquire the time-frequency position of the at least one candidate time-frequency resource according to the timing information.
  • the base station may further enable the UE to determine the cell identifier according to the received synchronization information, the received actual scrambling code sequence, and the actual orthogonal code sequence.
  • the base station enables the UE to determine the candidate scrambling code and/or the candidate according to the received synchronization sequence.
  • the channel estimation information of the orthogonal code where the candidate time-frequency resource includes N time-frequency sub-resources, the base station causes the UE to according to the received synchronization information, the actual scrambling code sequence, and the actual orthogonal code.
  • the sequence determines the cell identity, and the base station causes the UE to determine the cell identity according to the received synchronization information and each time-frequency sub-resource orthogonal code sequence.
  • the UE provided by the embodiment of the present invention includes: a first determining unit 500, configured to acquire at least one candidate time-frequency resource, and determine sequence information corresponding to at least one candidate time-frequency resource, where the sequence information includes At least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; the detecting unit 510, configured to detect, on the at least one candidate time-frequency resource, the candidate scrambling code included in the determined sequence information corresponding to the at least one candidate time-frequency resource The sequence and the candidate orthogonal code sequence group obtain the actual orthogonal code sequence and the actual orthogonal code sequence in the actual orthogonal code sequence group; the second determining unit 520 is configured to use at least the detected actual scrambling code sequence and the actual orthogonal sequence The code sequence determines the cell identity.
  • a first determining unit 500 configured to acquire at least one candidate time-frequency resource, and determine sequence information corresponding to at least one candidate time-frequency resource, where the sequence information includes At least one candidate scrambling code sequence and at least one candidate orthogonal
  • the candidate time-frequency resource acquired by the first determining unit 500 is at least one channel state information reference signal CSI-RS resource of the first antenna port; or the candidate time-frequency resource acquired by the first determining unit 500 is at least two.
  • the at least one candidate time-frequency resource acquired by the first determining unit 500 is a different time-frequency resource in one subframe; or the at least one candidate time-frequency resource acquired by the first determining unit 500 is in a different subframe. Frequency resources.
  • the obtaining, by the first determining unit 500, the at least one candidate time-frequency resource includes: storing at least one candidate time-frequency resource in advance; or acquiring at least one candidate time-frequency resource according to the signaling sent by the received base station.
  • the determining, by the first determining unit 500, the sequence information corresponding to the at least one candidate time-frequency resource includes: pre-storing sequence information corresponding to the at least one candidate time-frequency resource; or acquiring according to the received signaling sent by the base station. Sequence information corresponding to at least one candidate time-frequency resource.
  • the candidate scrambling code sequence determined by the first determining unit 500 is a pseudo random sequence or an initialization sequence of the pseudo random sequence;
  • the candidate orthogonal code sequence group determined by the first determining unit 500 is a Walsh Walsh sequence group.
  • the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the sequence information determined by the first determining unit 500, the candidate scrambling code sequence is a candidate time-frequency corresponding to the sequence information.
  • the sequence generated in the frequency domain direction of the source; the candidate orthogonal code sequence in the candidate orthogonal code sequence group is a sequence generated by spreading the generated candidate scrambling code sequence in the time domain direction of the candidate time-frequency resource.
  • the detecting unit 510 is specifically configured to: determine a scrambling code sequence sent by the base station and a orthogonal code sequence in the orthogonal code sequence group received on the candidate time-frequency resource, and sequence information corresponding to the candidate time-frequency resource respectively When the candidate candidate scrambling code sequence and the candidate orthogonal code sequence in the candidate orthogonal code sequence group are matched, the matched candidate scrambling code sequence and the candidate orthogonal code sequence are used as the actual scrambling code sequence and the actual orthogonal code sequence. .
  • the cell identifier determines the cell identifier according to the detected actual scrambling code sequence and the actual orthogonal code sequence; or, according to the detected actual scrambling code sequence, the actual orthogonal code sequence, and the actual scrambling sequence And determining the cell identity by the actual time-frequency resource occupied by the actual orthogonal code sequence.
  • the candidate time-frequency resource determined by the first determining unit 500 includes N time-frequency sub-resources, and each time-frequency sub-resource includes at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource.
  • N is an integer greater than 35.
  • the candidate scrambling code sequence determined by the first determining unit 500 is a sequence generated in a frequency domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information; the candidate determined by the first determining unit 500
  • the candidate orthogonal code sequence in the orthogonal code sequence group is a sequence generated by spreading the generated candidate scrambling code sequence in the time domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information.
  • the detecting unit 510 is configured to: detect, on each time-frequency sub-resource of the candidate time-frequency resource, a candidate scrambling code sequence included in the sequence information corresponding to the time-frequency sub-resource, to obtain an actual scrambling code sequence, And detecting, according to the correspondence between the time-frequency sub-resource and the candidate orthogonal code sequence group, the corresponding candidate orthogonal code sequence group is obtained on each time-frequency sub-resource of the candidate time-frequency resource, and obtaining each time-frequency sub-sense is better.
  • the determining unit is specifically configured to: determine the cell identifier according to the actually detected corresponding time-frequency sub-resource; or, according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource, The actual time-frequency resource occupied by the sequence and the actual orthogonal code sequence determines the cell identity.
  • the candidate time-frequency resource acquired by the first determining unit 500 includes a first time-frequency sub-resource group and a second time-frequency sub-resource group, where the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include At least one time-frequency sub-resource, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are orthogonal to each other, and the time-frequency sub-resources included in the second time-frequency sub-resource group correspond to The candidate orthogonal code sequences are identical or pseudo-orthogonal.
  • the first set of time-frequency sub-resources includes all or part of each CSI-RS resource of the at least two second antenna ports
  • the second set of time-frequency sub-resources includes at least two second All or part of each CSI-RS resource in the CSI-RS resource of the antenna port.
  • At least two candidate time-frequency resources acquired by the first determining unit 500 partially overlap each other; and/or, at least two time-frequency sub-resources partially overlap each other.
  • the communication unit 530 is further configured to: use the actual scrambling code sequence and the CSI-RS sent on the time-frequency sub-resource on the actual time-frequency resource occupied by the actual orthogonal code sequence group.
  • the determining unit is specifically configured to: determine, according to the detected actual scrambling code sequence and the actual orthogonal code sequence, configuration information of the cell corresponding to the cell identifier, where the configuration information includes a switch, an active/sleep state, and a transmit power of the corresponding cell.
  • the configuration information includes a switch, an active/sleep state, and a transmit power of the corresponding cell.
  • the acquiring unit is further configured to: detect a synchronization channel to obtain a synchronization sequence; acquire a time-frequency location of the at least one candidate time-frequency resource according to the synchronization frequency sequence and/or a time-frequency resource location where the synchronization sequence is located; or, according to the obtained synchronization information And detecting the actual scrambling code sequence and the actual orthogonal code sequence to determine the cell identifier; or determining channel estimation information of the candidate scrambling code and/or the candidate orthogonal code according to the obtained synchronization sequence.
  • the base station provided by the embodiment of the present invention includes: a first acquiring unit 600, configured to acquire at least one candidate time-frequency resource, and determine a sequence letter corresponding to at least one candidate time-frequency resource, respectively.
  • the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group.
  • the second obtaining unit 610 is configured to determine an actual time-frequency from the at least one candidate time-frequency resource acquired by the first acquiring unit 600.
  • the resource, the sequence signal corresponding to the actual time-frequency resource, the packet, the at least one candidate scrambling code sequence included, and the at least one candidate orthogonal code sequence group respectively determine an actual scrambling code sequence and an actual orthogonal code sequence; the sending unit 620, For transmitting, on the actual time-frequency resource determined by the second acquiring unit 610, the actual scrambling code sequence and the actual orthogonal code sequence determined by the second acquiring unit 610 to the user equipment UE, so that the UE is at least according to the actual scrambling code sequence and the actual positive
  • the cross code sequence determines the cell identity.
  • the candidate time-frequency resource acquired by the first acquiring unit 600 is at least one channel state information reference signal CSI-RS resource of the first antenna port; or the candidate time-frequency resource acquired by the first acquiring unit 600 is at least two.
  • the at least one candidate time-frequency resource acquired by the first acquiring unit 600 is a different time-frequency resource in one subframe; or the at least one candidate time-frequency resource acquired by the first acquiring unit 600 is in a different subframe. Frequency resources.
  • the candidate scrambling code sequence determined by the first obtaining unit 600 is a pseudo random sequence or an initialization sequence of the pseudo random sequence;
  • the candidate orthogonal code sequence group determined by the first acquiring unit 600 is a Walsh Walsh sequence group.
  • the actual 4th code sequence is generated in the frequency domain direction of the actual time-frequency resource for the actual scrambling code sequence and the actual orthogonal code sequence determined by the second acquiring unit 610.
  • the time domain domain invention on the actual time-frequency resource when the sending unit 620 determines the cell identifier, the UE determines the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence; or, the UE is in the actual 4 code sequence, the actual orthogonal code sequence, and the actual The actual time-frequency resource occupied by the scrambling code sequence and the actual orthogonal code sequence determines the cell identifier i.
  • the candidate time-frequency resource acquired by the first acquiring unit 600 includes N time-frequency sub-resources, and each of the time-frequency sub-resources includes at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource.
  • N is an integer greater than one.
  • the frequency domain direction of each time-frequency sub-resource in the actual time-frequency resource is separately generated.
  • An actual scrambling code sequence corresponding to each time-frequency sub-resource; in the time-domain direction of each time-frequency sub-resource in the actual time-frequency resource, the actual scrambling code sequence corresponding to each time-frequency sub-resource is generated,
  • the sending unit 620 is specifically configured to: send an actual scrambling code sequence corresponding to the actual time-frequency resource to the UE on each time-frequency sub-resource in the actual time-frequency resource, and in the actual time-frequency resource.
  • the sending unit 620 is specifically configured to: enable the UE to determine a cell identifier according to an actual scrambling code sequence corresponding to each time-frequency sub-resource and an actual orthogonal code sequence corresponding to each time-frequency sub-resource; or, The actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence, determining the cell identifier i only.
  • the candidate time-frequency resource acquired by the first acquiring unit 600 includes a first time-frequency sub-resource group and a second time-frequency sub-resource group, where the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include At least one time-frequency sub-resource, and the candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are orthogonal to each other, and the time-frequency sub-resources included in the second time-frequency sub-resource group correspond to
  • the candidate orthogonal code sequences are identical or pseudo-orthogonal.
  • the first set of time-frequency sub-resources includes all or part of each CSI-RS resource of the at least two second antenna ports
  • the second set of time-frequency sub-resources includes at least two second All or part of each CSI-RS resource in the CSI-RS resource of the antenna port.
  • At least two candidate time-frequency resources acquired by the first acquiring unit 600 partially overlap each other; and/or, at least two time-frequency sub-resources acquired by the first acquiring unit 600 partially overlap each other.
  • the sending unit 620 is further configured to: determine, by the UE, the configuration information of the cell corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, where the configuration information includes a switch, an active/sleep state, and a sending power level of the corresponding cell.
  • the configuration information includes a switch, an active/sleep state, and a sending power level of the corresponding cell.
  • the first obtaining unit 600 is further configured to: send a synchronization sequence on the synchronization channel; and enable the UE to acquire at least one candidate time-frequency according to the synchronization frequency sequence and/or the time-frequency resource location where the synchronization sequence is located.
  • the time-frequency position of the source; or, the UE determines the cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence; or, the UE determines the candidate scrambling code according to the obtained synchronization sequence and/or Or channel estimation information of candidate orthogonal codes.
  • an information detection method is: acquiring at least one candidate time-frequency resource, and respectively determining at least one candidate time-frequency resource corresponding to Sequence information, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; detecting candidate included in the determined sequence information corresponding to the at least one candidate time-frequency resource on the at least one candidate time-frequency resource a scrambling code sequence and a candidate orthogonal code sequence group, obtaining an actual orthogonal code sequence in the actual scrambling code sequence and the actual orthogonal code sequence group; determining the cell identity according to at least the detected actual scrambling code sequence and the actual orthogonal code sequence,
  • each candidate time-frequency resource can be any position of the carrier center, or even within 6 resource blocks of the carrier center, the probability of any two candidate time-frequency resources overlapping is small, and then any two The interference between the signals transmitted on the candidate time-frequency resources is small, so the
  • the interference between the column and the actual orthogonal code sequence shortens the time required for the UE to determine the cell identity, improves the efficiency of determining the cell identity, and determines the accuracy of the cell identity. At the same time, the cell identity is actually detected.
  • the scrambling code sequence and the orthogonal code sequence are determined, and both the scrambling code sequence and the orthogonal code sequence can reduce interference, and therefore, further solving the problem that when the UE determines the cell identity in the heterogeneous network, it takes a long time
  • the method of sending information is: obtaining at least one candidate time-frequency resource, and determining sequence information corresponding to at least one candidate time-frequency resource, wherein the sequence information includes at least one candidate a scrambling code sequence and at least one candidate orthogonal code sequence group; determining an actual time-frequency resource from the at least one candidate time-frequency resource, at least one candidate scrambling code sequence included in the sequence information corresponding to the actual time-frequency resource, and at least one candidate positive
  • the interference between the numbers is small. Therefore, the interference when the base station transmits the actual scrambling code sequence and the actual orthogonal code sequence is reduced, the time required for the UE to determine the cell identity is shortened, the efficiency of determining the cell identity is improved, and the determination is determined. The accuracy of the cell identity is determined. At the same time, the cell identity is determined by the actual scrambling code sequence and the actual orthogonal code sequence transmitted, and the scrambling code sequence and the orthogonal code sequence can reduce interference, and therefore, the solution is further solved. In a heterogeneous network, when the UE determines the cell identity, the problem is that the time is long, the efficiency is low, and the accuracy is poor.
  • embodiments of the present invention can be provided as a method, apparatus (device), 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 invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.
  • a computer-usable storage medium 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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Abstract

La présente invention concerne le domaine technique des communications sans fil et en particulier un procédé et un appareil destinés à détecter et à envoyer des informations de façon à résoudre le problème que posent la consommation de longue durée, la piètre efficacité et le manque de précision existants lorsqu'un équipement utilisateur (UE) détermine une identité de cellule selon l'état de la technique. Dans des modes de réalisation de la présente invention, comme chaque ressource temps-fréquence candidate peut être un emplacement quelconque d'un centre porteur, il est possible que deux ressources temps-fréquence candidates se superposent et que l'on observe une interférence entre des signaux envoyés sur deux ressources temps-fréquence candidates quelconques; par conséquent, l'invention permet de réduire les interférences lorsqu'un UE détecte une séquence réelle de code de brouillage et une séquence réelle de code orthogonal, de raccourcir le délai requis par l'UE pour déterminer une identité de cellule et d'améliorer l'efficacité de détermination de l'identité de cellule et la précision de l'identité déterminée de la cellule.
PCT/CN2013/075358 2013-05-08 2013-05-08 Procédé et appareil destinés à la détection et à l'envoi d'informations WO2014179955A1 (fr)

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CN201380064611.6A CN104956598B (zh) 2013-05-08 2013-05-08 一种信息检测及发送的方法及装置
PCT/CN2013/075358 WO2014179955A1 (fr) 2013-05-08 2013-05-08 Procédé et appareil destinés à la détection et à l'envoi d'informations

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PCT/CN2013/075358 WO2014179955A1 (fr) 2013-05-08 2013-05-08 Procédé et appareil destinés à la détection et à l'envoi d'informations

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