WO2016154874A1 - 一种指示物理层小区标识的方法及装置 - Google Patents

一种指示物理层小区标识的方法及装置 Download PDF

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Publication number
WO2016154874A1
WO2016154874A1 PCT/CN2015/075453 CN2015075453W WO2016154874A1 WO 2016154874 A1 WO2016154874 A1 WO 2016154874A1 CN 2015075453 W CN2015075453 W CN 2015075453W WO 2016154874 A1 WO2016154874 A1 WO 2016154874A1
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WIPO (PCT)
Prior art keywords
pci
target cell
extended
terminal device
base station
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PCT/CN2015/075453
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English (en)
French (fr)
Inventor
金哲
于光炜
罗之虎
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/075453 priority Critical patent/WO2016154874A1/zh
Priority to CN201580058040.4A priority patent/CN107113693B/zh
Priority to EP15886860.4A priority patent/EP3270636B1/en
Publication of WO2016154874A1 publication Critical patent/WO2016154874A1/zh
Priority to US15/719,700 priority patent/US10448315B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for indicating a physical cell identifier (PCI).
  • PCI physical cell identifier
  • An Internet of Things system is a NB M2M (Narrow Band Machine-To-Machine) system.
  • the system is similar to the existing cellular network architecture, and the terminal device performs data transmission under the scheduling of the base station.
  • a base station may form multiple cells to cover terminal devices at different locations; when the terminal device communicates with the base station, it first needs to obtain some information about the cell in which the terminal device is located.
  • PCI is a relatively important type of information in a cell.
  • the existing NB M2M system is mainly designed with reference to the Long Term Evolution (LTE) system.
  • the PCI of each cell in the LTE system is identified by a PSS (Primary Synchronization Signal) sequence and a SSS (Secondary Synchronization Signal) sequence.
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • one base station forms three cells, and the three cells are identified by three different PSS sequences; different base stations in the LTE system are identified by 168 SSS sequences. Therefore, the cells under the LTE network pass 504 different PCI identifiers.
  • the terminal device When receiving the broadcast information sent by the base station, the terminal device synchronizes the broadcast information with the three PSS sequences and 168 SSS sequences stored by itself, and acquires the PCI of the cell in which the cell is located.
  • the terminal equipment of the NB M2M system In the NB M2M system, if the same PCI design method as the LTE system is adopted, this often causes the terminal equipment of the NB M2M system to generate more power consumption due to the acquisition of the PCI, which is low-cost with the terminal equipment in the NB M2M system.
  • the low-power design was originally designed to be contrary.
  • One kind A feasible design method is to set the number of PCIs of the cells in the NB M2M system to be small (that is, the SSS sequence used to identify the base station in the NB M2M system is set less), so that the SSS sequence stored in the terminal device is reduced, and the terminal device is less.
  • the process of performing time-frequency synchronization becomes simple, thereby reducing the cost and power consumption of the terminal device.
  • the probability that the same cell of the PCI appears in a certain range becomes larger with respect to the case of the number of PCIs; when a terminal device simultaneously receives the base station to have When the data is transmitted by the same PCI cell, the terminal device cannot normally acquire the information in the received data.
  • An embodiment of the present invention provides a method and apparatus for indicating a physical layer cell identifier, which is used to solve the problem that when a terminal device simultaneously receives data sent by a base station to a cell having the same PCI, the terminal device cannot obtain and receive the data normally. The problem with the information in the data.
  • a first aspect provides a method for indicating a physical layer cell identifier PCI, which is applied to a communication system, including:
  • the method further includes:
  • the terminal device determines a second scrambling code according to the extended PCI; the second scrambling code is used to enable the terminal device to receive data from the base station Decode; or,
  • the terminal device determines, by the terminal device, a second scrambling code according to the combination of the extended PCI and the PCI of the target cell; the second scrambling code is configured to enable the terminal device to receive data from the base station Decode.
  • the extended PCI is a cell identifier in a global cell identifier
  • the extended PCI is a combination of all the bits or partial bits in the cell identifier in the global cell identifier and the location area identifier in the global cell identifier.
  • the first broadcast message includes a primary synchronization for indicating a PCI of the target cell. a signal PSS sequence and a secondary synchronization signal SSS sequence; the terminal device determines, according to the first broadcast message sent by the base station, the PCI of the target cell where the terminal device is located, including:
  • the terminal device determines a PCI of the target cell according to a PSS sequence and an SSS sequence for indicating a PCI of a cell in the communication system and time-frequency synchronization of the first broadcast message.
  • the number of pre-configured PCIs in the terminal device and/or the base station is 36; Wherein, the 36 PCIs are indicated by a combination of 3 PSS sequences and 12 SSS sequences.
  • a second aspect provides a method for indicating a physical layer cell identifier PCI, which is applied to a communication system, including:
  • the base station sends a first broadcast message, where the first broadcast message carries PCI information of the target cell;
  • the second broadcast message carries extended PCI information of the target cell;
  • the extended PCI identifies the target cell or a combination of the extended PCI and the PCI of the target cell to identify the target cell ;
  • the PCI information of the target cell corresponds to a first scrambling code sequence, and the extended PCI information of the second broadcast message is scrambled by the first scrambling code sequence.
  • the extended PCI information corresponds to a second scrambling code, and the base station is configured according to the second scrambling code
  • the data transmitted on the target cell is scrambled;
  • the combination of the extended PCI and the PCI of the target cell identifies the target cell
  • the combination of the extended PCI information and the PCI information corresponds to a second scrambling code
  • the base station according to the second scrambling code pair The data transmitted on the target cell is scrambled.
  • the extended PCI is a cell identifier in a global cell identifier
  • the extended PCI is a combination of all the bits or partial bits in the cell identifier in the global cell identifier and the location area identifier in the global cell identifier.
  • the first broadcast message includes a primary synchronization signal for indicating the target cell PCI PSS sequence and secondary synchronization sequence SSS sequence;
  • the 36 base stations are pre-configured with 36 PCIs, and the 36 PCIs are indicated by a combination of 3 PSS sequences and 12 SSS sequences.
  • a terminal device including:
  • a PCI determining unit configured to determine, according to a first broadcast message sent by the base station, a PCI of a target cell where the terminal device is located;
  • a first scrambling code determining unit configured to determine a first scrambling code according to the PCI of the target cell
  • An extended PCI determining unit configured to determine an extended PCI of the target cell according to the second broadcast message and the first scrambling code sent by the base station, where the extended PCI identifies the target cell or the extended PCI Combination with PCI of the target cell Identify the target cell.
  • the terminal device further includes:
  • a second scrambling code determining unit configured to determine a second scrambling code according to the extended PCI when the extended PCI identifies the target cell; the second scrambling code is used to enable the terminal device to receive the received Decoding the data of the base station; or
  • a second scrambling code determining unit configured to determine a second scrambling code according to a combination of the extended PCI and a PCI of the target cell, when the combination of the extended PCI and the PCI of the target cell identifies the target cell;
  • the second scrambling code is configured to cause the terminal device to decode the received data from the base station.
  • the extended PCI is a cell identifier in a global cell identifier
  • the extended PCI is a combination of all the bits or partial bits in the cell identifier in the global cell identifier and the location area identifier in the global cell identifier.
  • the first broadcast message includes a primary synchronization for indicating the PCI of the target cell.
  • the PCI determining unit is specifically configured to:
  • the number of pre-configured PCIs in the terminal device and/or the base station is 36; Wherein, the 36 PCIs are indicated by a combination of 3 PSS sequences and 12 SSS sequences.
  • a base station including:
  • a first sending unit configured to send a first broadcast message, where the first broadcast message is received
  • a second sending unit configured to send a second broadcast message, where the second broadcast message carries extended PCI information of the target cell; the extended PCI identifies the target cell or the extended PCI and the PCI of the target cell Combination of the identified target cell;
  • the PCI information of the target cell corresponds to a first scrambling code sequence, and the extended PCI information of the second broadcast message is scrambled by the first scrambling code sequence.
  • the base station further includes:
  • a scrambling unit configured to: when the extended PCI identifies the target cell, the extended PCI information corresponds to a second scrambling code, and the base station performs, according to the second scrambling code, data transmitted on the target cell Scramble; or,
  • a scrambling unit configured to: when the combination of the extended PCI and the PCI of the target cell identifies the target cell, the combination of the extended PCI information and the PCI information corresponds to a second scrambling code, where the base station according to the The second scrambling code scrambles data transmitted on the target cell.
  • the extended PCI is a cell identifier in a global cell identifier
  • the extended PCI is a combination of all the bits or partial bits in the cell identifier in the global cell identifier and the location area identifier in the global cell identifier.
  • the first broadcast message includes a primary synchronization signal for indicating the target cell PCI PSS sequence and secondary synchronization sequence SSS sequence;
  • the 36 base stations are pre-configured with 36 PCIs, and the 36 PCIs are indicated by a combination of 3 PSS sequences and 12 SSS sequences.
  • a fifth aspect provides a terminal device, including: a memory and a processor;
  • the memory is for storing a set of codes for controlling the processor to perform the following actions:
  • the processor is further configured to:
  • the second scrambling code is configured to enable the terminal device to decode received data from the base station; or ,
  • the terminal device decodes the received data from the base station.
  • the extended PCI is a cell identifier in a global cell identifier
  • the extended PCI is a combination of all the bits or partial bits in the cell identifier in the global cell identifier and the location area identifier in the global cell identifier.
  • the first broadcast message includes a primary synchronization for indicating a PCI of the target cell a signal PSS sequence and a secondary synchronization signal SSS sequence; the processor is specifically configured to:
  • the number of pre-configured PCIs in the terminal device and/or the base station is 36; wherein the 36 PCIs are indicated by a combination of three PSS sequences and 12 SSS sequences.
  • a sixth aspect provides a base station, including: a transmitter;
  • the transmitter is configured to send a first broadcast message, where the first broadcast message carries PCI information of a target cell;
  • the transmitter is further configured to send a second broadcast message, where the second broadcast message carries extended PCI information of the target cell; the extended PCI identifies the target cell or the extended PCI and the target cell a combination of PCI identifies the target cell;
  • the PCI information of the target cell corresponds to a first scrambling code sequence, and the extended PCI information of the second broadcast message is scrambled by the first scrambling code sequence.
  • the base station further includes a memory and a processor
  • the memory is for storing a set of codes for controlling the processor to perform the following actions:
  • the extended PCI information corresponds to a second scrambling code, and the base station scrambles data transmitted on the target cell according to the second scrambling code;
  • the combination of the extended PCI and the PCI of the target cell identifies the target cell
  • the combination of the extended PCI information and the PCI information corresponds to a second scrambling code
  • the base station according to the second scrambling code pair The data transmitted on the target cell is scrambled.
  • the extended PCI is a cell identifier in a global cell identifier
  • the extended PCI is a combination of all the bits or partial bits in the cell identifier in the global cell identifier and the location area identifier in the global cell identifier.
  • the first broadcast message includes a primary synchronization signal for indicating the target cell PCI PSS sequence and secondary synchronization sequence SSS sequence;
  • the 36 base stations are pre-configured with 36 PCIs, and the 36 PCIs are indicated by a combination of 3 PSS sequences and 12 SSS sequences.
  • the seventh aspect provides a system for indicating a physical layer cell identifier PCI, including a terminal device and a base station, where the terminal device is any one of the terminal devices provided by the third aspect or the fifth aspect, where the base station is the fourth aspect or A base station provided by any of the sixth aspects.
  • the terminal device generates a first scrambling code according to the PCI determined by the first broadcast message, and determines an extended PCI of the target cell according to the second broadcast message.
  • the target cell is identified by using a combination of extended PCI or extended PCI and PCI of the target cell, so that when the number of PCIs of the cell in the NB M2M system is set to a small extent, the extended PCI or the PCI of the extended PCI and the target cell can be utilized within a certain range.
  • the combination distinguishes the same cell of the PCI, so that the base station and the terminal device can communicate by using the combination of the extended PCI or the extended PCI and the PCI of the target cell, even if the terminal device simultaneously receives the data sent by the base station to the cell having the same PCI. At the same time, the terminal device can still obtain the information in the received data normally.
  • FIG. 1 is a flowchart of a method for indicating a PCI according to an embodiment of the present invention
  • FIG. 2 is a flowchart of still another method for indicating a PCI according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of still another terminal device according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of still another terminal device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of still another base station according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of still another base station according to an embodiment of the present invention.
  • An embodiment of the present invention provides a method for indicating a PCI, which is applied to a communication system. As shown in FIG. 1, the method includes:
  • the terminal device determines, according to the first broadcast message sent by the base station, the PCI of the target cell where the terminal device is located.
  • the method for indicating PCI provided by the embodiment of the present invention can be applied to an NB M2M system, and can also be applied to other communication systems.
  • the terminal device mentioned in the embodiment of the present invention may be a mobile phone, or may be a communication device used in a device such as a power device, a water meter, a lighting device, etc., which is not limited by the embodiment of the present invention and other embodiments of the present invention. .
  • the first broadcast message includes a PSS sequence and an SSS sequence for indicating a PCI of the target cell.
  • the step 101 may include: the terminal device is configured to indicate the communication system. PSS sequence and SSS sequence of PCI of the cell.
  • the column and the first broadcast message are time-frequency synchronized to determine a PCI of the target cell.
  • the terminal device may store all PSS sequences and all SSS sequences in the communication system for indicating the cell PCI, and when the terminal device receives the first broadcast message, perform the first broadcast message and the PSS sequence stored by itself.
  • Cross-correlation determining the most relevant PSS sequence; since the relative positions of the PSS sequence and the SSS sequence are fixed in the first broadcast message, after detecting the PSS, the location where the SSS sequence may appear in the first broadcast message can be known.
  • the SSS sequence is cross-correlated with the SSS sequence stored in the broadcast message to determine the most relevant SSS sequence; the PCI of the target cell is calculated according to the determined PSS sequence and the SSS sequence.
  • a bandwidth is generally divided into multiple physical channels, and a physical channel is divided into a broadcast channel, a data channel, a control channel, and the like.
  • the base station sends a broadcast message on the broadcast channel, and the broadcast message may include a system message, a PSS sequence, an SSS sequence, a frame number detection sequence, and the like.
  • the terminal device may generate a first scrambling code by using a Gold sequence after acquiring the PCI of the target cell, and the maximum sequence linear feedback shift register sequence is the longest linear feedback shift register sequence.
  • the m-sequence is added to the shift modulo 2, the initial value of the first m-sequence is known, and the initial value of the second m-sequence can be set according to the application itself.
  • the PCI may be used as the entire bit or part of the initial value of the second m sequence, which is not limited in the embodiment of the present invention.
  • the Gold sequence generated by the first m sequence and the second m sequence is the first scrambling code.
  • the initial value of the second m sequence may further include a terminal identifier, a frame number, and the like.
  • the first scrambling code is a descrambling sequence of the broadcast channel. Specifically, the base station scrambles the system message before sending the broadcast message.
  • the first scrambling code is used as a descrambling sequence to solve the scrambled system message when the terminal device receives the broadcast message sent by the base station. code.
  • the base station scrambling the system message may be: performing a modulo-2 addition operation on the system message and the scrambling code sequence. Since the scrambling and descrambling are mutually inverse operations, when receiving the broadcast message sent by the base station, the terminal device can perform the modulo-2 addition operation on the descrambled sequence and the received scrambled system message to recover the system message. Get the content carried in the system message.
  • the extended PCI identifies the target cell or the extended PCI and the target cell.
  • the combination of PCI identifies the target cell.
  • the second broadcast message carries the extended PCI of the target cell.
  • the extended PCI may be located in the system message of the second broadcast message.
  • the terminal device may parse the second broadcast message according to the first scrambling code to obtain the system in the second broadcast message.
  • the extended PCI carried in the message.
  • first broadcast message and the second broadcast message may be the same broadcast message.
  • the method may further include:
  • the terminal device determines a second scrambling code according to the extended PCI; the second scrambling code is used to enable the terminal device to receive data from the base station Decode; or,
  • the terminal device determines a second scrambling code according to the combination of the extended PCI and the PCI of the target cell; the second interference The code is for causing the terminal device to decode the received data from the base station.
  • the second scrambling code is a descrambling sequence of a channel such as a data channel, a control channel, and a random access channel.
  • the data received by the terminal device from the base station may be signaling, control information, scheduling information, downlink data, and the like, which are sent by the base station through a channel such as a data channel or a control channel.
  • the optional method may refer to the specific implementation of step 102.
  • the PCI is extended, or the combination of the extended PCI and the PCI of the target cell is used as the initial value of the initial value of the second m sequence or Part of the bit.
  • the Gold sequence generated by the first m sequence and the second m sequence is the second scrambling code.
  • the initial value of the second m sequence may further include a terminal identifier, a frame number, and the like.
  • the optional method when using the extended PCI to generate the second scrambling code, may set the extended PCI settings of the same cell of the PCI to be different, and the generated second scrambling code is different; and the combination of the PCI of the extended PCI and the target cell is generated.
  • the second scrambling code the combination of the extended PCI of the same cell of the PCI and the PCI of the target cell may be different, and the generated second scrambling code is different. Different cells use the second scrambling code to communicate without interference.
  • the extended PCI is a cell identifier in a global cell identifier; or the extended PCI is a cell identifier in a global cell identifier and all bits or partial bits in a location area identifier in the global cell identifier. The combination of bits.
  • the selection of the partial bits in the location area identifier may be determined according to actual conditions; for example, when an identifier of 2 bits is required, the identifier on any two bits in the location area identifier may be selected.
  • the number of pre-configured PCIs in the terminal device and/or the base station is 36; wherein the 36 PCIs are indicated by a combination of three PSS sequences and 12 SSS sequences.
  • the number of pre-configured PCIs in the terminal device and/or the base station is small, and the PSS sequence and the SSS sequence stored in the terminal device are also reduced.
  • the terminal device receives the first broadcast message, the time-frequency is performed. The process of synchronization becomes simple, which can reduce the power consumption of the terminal device and reduce the cost of the terminal device.
  • the terminal device generates a first scrambling code according to the PCI determined by the first broadcast message, and determines a small target according to the second broadcast message.
  • the target cell is identified by using a combination of extended PCI or extended PCI and PCI of the target cell, so that when the number of PCIs of the cell in the NB M2M system is set to a small extent, the extended PCI or the PCI of the extended PCI and the target cell can be utilized within a certain range.
  • the combination distinguishes the same cell of the PCI, so that the base station and the terminal device can communicate by using the combination of the extended PCI or the extended PCI and the PCI of the target cell, even if the terminal device simultaneously receives the data sent by the base station to the cell having the same PCI. At the same time, the terminal device can still obtain the information in the received data normally.
  • An embodiment of the present invention provides a method for indicating a PCI, which is applied to a communication system. As shown in FIG. 2, the method includes:
  • the base station sends a first broadcast message, where the first broadcast message carries PCI information of the target cell.
  • the PCI information is information that may enable the terminal device to obtain the PCI of the cell (ie, the target cell) in which the terminal device is located according to the information.
  • the PCI information may specifically be a PSS sequence and an SSS sequence indicating the PCI of the target cell.
  • a bandwidth is generally divided into multiple physical channels, and a physical channel is divided into a broadcast channel, a data channel, a control channel, and the like.
  • the base station sends a broadcast message on the broadcast channel, and the broadcast message may include a system message, a PSS sequence, an SSS sequence, a frame number detection sequence, and the like.
  • the PCI information of the target cell corresponds to a first scrambling code sequence, and the extended PCI information of the second broadcast message is scrambled by the first scrambling code sequence.
  • the extended PCI information may be located in a system message of the second broadcast message.
  • the extended PCI information is information that enables the terminal device to acquire the extended PCI of the target cell according to the information.
  • the terminal device may generate a first scrambling code by using the PCI information of the target cell, where the first scrambling code is a descrambling sequence of the broadcast channel, and the first scrambling code may parse the broadcast message sent by the base station to obtain information carried by the broadcast message.
  • step 201 and step 202 are in no particular order; for example, step 201 may be performed first and then step 202 may be performed, or step 202 may be performed first and then step 201 may be performed, or step 201 and step 202 may be performed simultaneously.
  • first broadcast message and the second broadcast message may be the same broadcast message.
  • the extended PCI information when the extended PCI identifies the target cell, the extended PCI information corresponds to a second scrambling code, and the base station scrambles data transmitted on the target cell according to the second scrambling code.
  • the combination of the extended PCI and the PCI of the target cell identifies the target cell, the combination of the extended PCI information and the PCI information corresponds to a second scrambling code, and the base station is according to the second The scrambling code scrambles data transmitted on the target cell.
  • the terminal device may generate the second scrambling code by using the extended PCI information or the combination of the extended PCI information and the PCI information of the target cell, where the second scrambling code is a descrambling sequence of a channel such as a data channel, a control channel, and a random access channel.
  • the second scrambling code can be used to parse data sent by the base station through channels such as a data channel, a control channel, and a random access channel, and obtain information in the data.
  • the extended PCI is a cell identifier in a global cell identifier; or the extended PCI is a cell identifier in a global cell identifier and all bits or partial bits in a location area identifier in the global cell identifier. The combination of bits.
  • the selection of the partial bits in the location area identifier may be determined according to actual conditions; for example, when an identifier of 2 bits is required, the identifier on any two bits in the location area identifier may be selected.
  • the first broadcast message includes a PSS sequence and an SSS sequence for indicating the target cell PCI, where 36 PCIs are pre-configured in the base station, and the 36 PCIs are composed of three PSS sequences. Combination indication with SSS sequence in 12.
  • the number of pre-configured PCIs in the terminal device and/or the base station is small, and the PSS sequence and the SSS sequence stored in the terminal device are also less, when the terminal device receives the first broadcast message, performing The process of time-frequency synchronization becomes simple, which can reduce the power consumption of the terminal device and reduce the cost of the terminal device.
  • the base station sends the first broadcast message and the second broadcast message to the terminal device, and the terminal device determines the PCI and the extended PCI of the target cell according to the first broadcast message and the second broadcast message.
  • the target cell is identified by using a combination of extended PCI or extended PCI and PCI of the target cell, so that when the number of PCIs of the cell in the NB M2M system is set to a small extent, the extended PCI or the PCI of the extended PCI and the target cell can be utilized within a certain range.
  • the combination distinguishes the same cell of the PCI, so that the base station and the terminal device can communicate by using the combination of the extended PCI or the extended PCI and the PCI of the target cell, even if the terminal device simultaneously receives the data sent by the base station to the cell having the same PCI. At the same time, the terminal device can still obtain the information in the received data normally.
  • the embodiment of the present invention provides a terminal device 30, which is used to implement the method for indicating a PCI, and the terminal device 30 includes:
  • the PCI determining unit 301 is configured to determine, according to the first broadcast message sent by the base station, a PCI of the target cell where the terminal device is located;
  • the first scrambling code determining unit 302 is configured to determine, according to the PCI of the target cell, a first scrambling code
  • An extended PCI determining unit 303 configured to determine an extended PCI of the target cell according to the second broadcast message and the first scrambling code sent by the base station, where the extended PCI identifies the target cell or the extension The combination of PCI and PCI of the target cell identifies the target cell.
  • the terminal device further includes:
  • the second scrambling code determining unit 304 is configured to determine, according to the extended PCI, a second scrambling code when the extended PCI identifies the target cell, where the second scrambling code is used to enable the terminal device to receive the received Data from the base station is decoded; or,
  • the second scrambling code determining unit 304 is configured to determine, according to the combination of the extended PCI and the PCI of the target cell, a second scrambling code, when the combination of the extended PCI and the PCI of the target cell identifies the target cell.
  • the second scrambling code is for causing the terminal device to decode the received data from the base station.
  • the extended PCI is a cell identifier in a global cell identifier
  • the extended PCI is a combination of all the bits or partial bits in the cell identifier in the global cell identifier and the location area identifier in the global cell identifier.
  • the first broadcast message includes a primary synchronization signal PSS sequence and a secondary synchronization signal SSS sequence for indicating a PCI of the target cell;
  • the PCI determining unit 301 is specifically configured to: according to the indication
  • the PSS sequence and the SSS sequence of the PCI of the cell in the communication system and the first broadcast message are time-frequency synchronized, and the PCI of the target cell is determined.
  • the number of pre-configured PCIs in the terminal device and/or the base station is 36; wherein the 36 PCIs are indicated by a combination of three PSS sequences and 12 SSS sequences.
  • the terminal device provided by the embodiment of the present invention generates a first scrambling code according to the PCI determined by the first broadcast message, and determines an extended PCI of the target cell according to the second broadcast message.
  • the target cell is identified by using a combination of extended PCI or extended PCI and PCI of the target cell, so that when the number of PCIs of the cell in the NB M2M system is set to a small extent, the extended PCI or the PCI of the extended PCI and the target cell can be utilized within a certain range.
  • the combination distinguishes the same cell of the PCI, so that the base station and the terminal device can communicate by using the combination of the extended PCI or the extended PCI and the PCI of the target cell, even if the terminal device simultaneously receives the data sent by the base station to the cell having the same PCI. At the same time, the terminal device can still obtain the information in the received data normally.
  • each module in Embodiment 3 may be embedded in or independent of the processor of the terminal device in hardware, or may be stored in the memory of the terminal device in software, so that the processor invokes the above execution.
  • the processor may be a central processing unit (CPU), a microprocessor, a single chip microcomputer, or the like.
  • a terminal device 50 is provided for implementing the method for indicating PCI shown in FIG. 1 .
  • the terminal device 50 includes: a memory 501, a processor 502, and a bus system 503.
  • the memory 501 and the processor 502 are coupled together by a bus system 503, wherein the memory 501 may include a random access memory, and may also include a non-volatile memory, such as at least one disk. Memory.
  • the bus system 503 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 5, but it does not mean that there is only one bus or one type of bus.
  • the memory 501 is configured to store a set of codes for controlling the processor 502 to perform the following actions:
  • processor 502 is further configured to:
  • the second scrambling code is configured to enable the terminal device to decode received data from the base station; or ,
  • the second scrambling code is configured to enable the terminal device to decode the received data from the base station.
  • the extended PCI is a cell identifier in a global cell identifier; or the extended PCI is a cell identifier in a global cell identifier and all bits or partial bits in a location area identifier in the global cell identifier. The combination of bits.
  • the first broadcast message includes a primary synchronization signal PSS sequence and a secondary synchronization signal SSS sequence for indicating a PCI of the target cell
  • the processor 502 is specifically configured to: according to the The PSS sequence and the SSS sequence of the PCI of the cell in the system and the first broadcast message are time-frequency synchronized, and the PCI of the target cell is determined.
  • the number of pre-configured PCIs in the terminal device and/or the base station is 36; wherein the 36 PCIs are indicated by a combination of three PSS sequences and 12 SSS sequences.
  • the terminal device provided by the embodiment of the present invention generates a first scrambling code according to the PCI determined by the first broadcast message, and determines an extended PCI of the target cell according to the second broadcast message.
  • the target cell is identified by using a combination of extended PCI or extended PCI and PCI of the target cell, so that when the number of PCIs of the cell in the NB M2M system is set to a small extent, the extended PCI or the PCI of the extended PCI and the target cell can be utilized within a certain range.
  • the combination distinguishes the same cell of the PCI, so that the base station and the terminal device can communicate by using the combination of the extended PCI or the extended PCI and the PCI of the target cell, even if the terminal device simultaneously receives the data sent by the base station to the cell having the same PCI. At the same time, the terminal device can still obtain the information in the received data normally.
  • the embodiment of the present invention provides a base station 60, which is used to implement the method for indicating PCI shown in FIG. 2.
  • the base station 60 includes:
  • the first sending unit 601 is configured to send a first broadcast message, where the first broadcast message carries PCI information of the target cell;
  • a second sending unit 602 configured to send a second broadcast message, where the second broadcast message carries extended PCI information of the target cell; the extended PCI identifies the target cell or the extended PCI and the target cell The combination of the PCI identifies the target cell; wherein the PCI information of the target cell corresponds to a first scrambling code sequence, and the extended PCI information of the second broadcast message is scrambled by the first scrambling code sequence.
  • the base station 60 further includes:
  • the scrambling unit 603 is configured to: when the extended PCI identifies the target cell, the extended PCI information corresponds to a second scrambling code, and the base station 60 transmits the target on the target cell according to the second scrambling code pair. Data is scrambled; or,
  • the scrambling unit 603 is configured to: when the combination of the extended PCI and the PCI of the target cell identifies the target cell, the combination of the extended PCI information and the PCI information corresponds to a second scrambling code, where the base station 60 And scrambling data transmitted on the target cell according to the second scrambling code.
  • the extended PCI is a cell identifier in a global cell identifier
  • the extended PCI is a combination of all the bits or partial bits in the cell identifier in the global cell identifier and the location area identifier in the global cell identifier.
  • the first broadcast message includes a primary synchronization signal PSS sequence and a secondary synchronization sequence SSS sequence for indicating the target cell PCI; wherein the base station 60 is preconfigured with 36 PCIs, and the 36 The PCI is indicated by a combination of 3 PSS sequences and 12 SSS sequences.
  • the base station provided by the embodiment of the present invention sends a first broadcast message and a second broadcast message to the terminal device, and the terminal device determines the PCI and the extended PCI of the target cell according to the first broadcast message and the second broadcast message.
  • the target cell is identified by using a combination of extended PCI or extended PCI and PCI of the target cell, so that when the number of PCIs of the cell in the NB M2M system is set to a small extent, the extended PCI or the PCI of the extended PCI and the target cell can be utilized within a certain range.
  • the combination distinguishes the same cell of the PCI, so that the combination of the extended PCI or the extended PCI and the PCI of the target cell can be utilized between the base station and the terminal device.
  • each module in Embodiment 5 may be embedded in the hardware of the base station in hardware or stored in the memory of the terminal device in a software form, so that the processor calls to execute the above.
  • the processor can be a central processing unit (CPU), a microprocessor, a single chip microcomputer, and the like.
  • a base station 80 is provided for implementing the method for indicating PCI shown in FIG. 2, where the base station 80 includes: a memory 801, a processor 802, a transmitter 803, and a bus system. 804.
  • the memory 801, the processor 802, and the transmitter 803 are coupled together by a bus system 804.
  • the memory 801 may include a random access memory, and may also include a non-volatile memory. For example at least one disk storage.
  • the bus system 804 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 8, but it does not mean that there is only one bus or one type of bus.
  • the memory 801 is configured to store a set of codes for controlling the processor 802 to perform the following actions: determining first broadcast information and second broadcast information;
  • the transmitter 803 is configured to send a first broadcast message, where the first broadcast message carries PCI information of a target cell.
  • the transmitter 803 is further configured to send a second broadcast message, where the second broadcast message carries extended PCI information of the target cell, and the extended PCI identifies the target cell or the extended PCI and the target cell.
  • the combination of PCI identifies the target cell;
  • the PCI information of the target cell corresponds to a first scrambling code sequence, and the extended PCI information of the second broadcast message is scrambled by the first scrambling code sequence.
  • the processor 802 is further configured to: when the extended PCI identifies the target When the cell is marked, the extended PCI information corresponds to a second scrambling code, and the base station scrambles data transmitted on the target cell according to the second scrambling code; or
  • the combination of the extended PCI and the PCI of the target cell identifies the target cell
  • the combination of the extended PCI information and the PCI information corresponds to a second scrambling code
  • the base station according to the second scrambling code pair The data transmitted on the target cell is scrambled.
  • the extended PCI is a cell identifier in a global cell identifier
  • the extended PCI is a combination of all the bits or partial bits in the cell identifier in the global cell identifier and the location area identifier in the global cell identifier.
  • the first broadcast message includes a primary synchronization signal PSS sequence and a secondary synchronization sequence SSS sequence for indicating the target cell PCI, where 36 PCIs are pre-configured in the base station, and the 36 PCI is indicated by a combination of 3 PSS sequences and 12 SSS sequences.
  • the base station provided by the embodiment of the present invention sends a first broadcast message and a second broadcast message to the terminal device, and the terminal device determines the PCI and the extended PCI of the target cell according to the first broadcast message and the second broadcast message.
  • the target cell is identified by using a combination of extended PCI or extended PCI and PCI of the target cell, so that when the number of PCIs of the cell in the NB M2M system is set to a small extent, the extended PCI or the PCI of the extended PCI and the target cell can be utilized within a certain range.
  • the combination distinguishes the same cell of the PCI, so that the base station and the terminal device can communicate by using the combination of the extended PCI or the extended PCI and the PCI of the target cell, even if the terminal device simultaneously receives the data sent by the base station to the cell having the same PCI. At the same time, the terminal device can still obtain the information in the received data normally.
  • the embodiment of the present invention provides a system for indicating a PCI, including a terminal device and a base station, where the terminal device can be any one of the terminal devices provided in the third embodiment or the fourth embodiment, and the base station can be any provided in the fifth embodiment or the sixth embodiment.
  • a base station can be any provided in the fifth embodiment or the sixth embodiment.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device implementation described above The example is merely illustrative.
  • the division of the module is only a logical function division, and the actual implementation may have another division manner, for example, multiple modules or components may be combined or integrated into another system, or Some features can be ignored or not executed.
  • the modules described as separate components may or may not be physically separated.
  • the components displayed as modules may or may not be physical modules, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional module in each embodiment of the present invention may be integrated into one processing module, or two or more modules may be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or in the form of hardware plus software function modules.
  • the above-described integrated modules implemented in the form of software function modules can be stored in a computer readable storage medium.
  • the software functional modules described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform some of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.

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Abstract

本发明实施例提供了一种指示物理层小区标识的方法及装置，涉及通信技术领域，用于解决当一个终端设备同时接收到基站向具有相同PCI的小区发送的数据时，该终端设备将无法正常的获取接收到的数据中的信息的问题。该方法包括：终端设备根据基站发送的第一广播消息，确定所述终端设备所在的目标小区的PCI；根据所述目标小区的PCI，确定第一扰码；根据所述基站发送的第二广播消息和所述第一扰码，确定所述目标小区的扩展PCI；其中，所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区。

Description

一种指示物理层小区标识的方法及装置 技术领域
本发明涉及通信技术领域，尤其涉及一种指示物理层小区标识(Physical Cell Identifier，简称PCI)的方法及装置。
背景技术
随着人们对于“万物互联”的需求不断增强，与物联网相关的技术的发展也越来越快。一种物联网系统为NB M2M(Narrow Band Machine-To-Machine，窄带机器对机器)系统，该系统与现有的蜂窝网络架构类似，终端设备在基站的调度下进行数据传输。
在NB M2M系统通常的场景中，一个基站可以形成多个小区，以覆盖处在不同位置的终端设备；终端设备在与基站进行通信时，需要首先获得该终端设备所处的小区的一些信息，PCI即是小区的信息中相对重要的一种。
现有的NB M2M系统在设计时主要参考长期演进(Long Term Evolution，LTE)系统。LTE系统中每个小区的PCI均通过PSS(Primary Synchronization Signal，主同步信号)序列和SSS(Secondary Synchronization Signal，辅同步信号)序列进行标识。具体的，一个基站形成3个小区，这3个小区通过3个不同的PSS序列标识；LTE系统中的不同的基站通过168个SSS序列标识。因此，LTE网络下的小区通过504个不同的PCI标识。终端设备在接收到基站发送的广播信息时，将广播信息与自身存储的3个PSS序列和168个SSS序列进行时频同步，获取其所在小区的PCI。
在NB M2M系统中，如果采用与LTE系统相同的PCI设计方法，这往往会使得NB M2M系统的终端设备由于获取PCI而产生较多的功耗，这与NB M2M系统中的终端设备低成本、低功耗的设计初衷是相悖的。一种 可行的设计方法是，将NB M2M系统中的小区的PCI数量设置较少(即将NB M2M系统中用于标识基站的SSS序列设置较少)，使得终端设备中存储的SSS序列变少，终端设备进行时频同步时的过程变简单，进而降低终端设备的成本和功耗。
然而，当NB M2M系统中的小区的PCI数量设置较少时，相对于PCI数量更多的情况，在一定范围内出现PCI相同的小区的概率变大；当一个终端设备同时接收到基站向具有相同PCI的小区发送的数据时，该终端设备将无法正常的获取接收到的数据中的信息。
发明内容
本发明的实施例提供一种指示物理层小区标识的方法及装置，用以解决当一个终端设备同时接收到基站向具有相同PCI的小区发送的数据时，该终端设备将无法正常的获取接收到的数据中的信息的问题。
为达到上述目的，本发明的实施例采用如下技术方案：
第一方面，提供一种指示物理层小区标识PCI的方法，应用于通信系统，包括：
终端设备根据基站发送的第一广播消息，确定所述终端设备所在的目标小区的PCI；
根据所述目标小区的PCI，确定第一扰码；
根据所述基站发送的第二广播消息和所述第一扰码，确定所述目标小区的扩展PCI；其中，所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区。
结合第一方面，在第一种可能的实现方式中，在所述确定所述目标小区的扩展PCI之后，所述方法还包括：
当所述扩展PCI标识所述目标小区时，所述终端设备根据所述扩展PCI确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码；或者，
当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小 区时，所述终端设备根据所述扩展PCI与所述目标小区的PCI的组合确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码。
结合第一方面或第一方面的第一种可能的实现方式，在第二种可能的实现方式中，所述扩展PCI为全球小区标识中的小区标识；或者，
所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
结合第一方面至第一方面的第二种可能的实现方式任一种，在第三种可能的实现方式中，所述第一广播消息中包括用于指示所述目标小区的PCI的主同步信号PSS序列和辅同步信号SSS序列；所述终端设备根据基站发送的第一广播消息，确定所述终端设备所在的目标小区的PCI，包括：
所述终端设备根据用于指示所述通信系统中小区的PCI的PSS序列和SSS序列以及所述第一广播消息进行时频同步，确定所述目标小区的PCI。
结合第一方面至第一方面的第三种可能的实现方式任一种，在第四种可能的实现方式中，所述终端设备和/或所述基站中预配置的PCI个数为36；其中，所述36个PCI由3种PSS序列和12种SSS序列的组合指示。
第二方面，提供一种指示物理层小区标识PCI的方法，应用于通信系统，包括：
基站发送第一广播消息，所述第一广播消息承载目标小区的PCI信息；
发送第二广播消息，所述第二广播消息承载所述目标小区的扩展PCI信息；所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区；
其中，所述目标小区的PCI信息对应第一扰码序列，所述第二广播消息的扩展PCI信息被所述第一扰码序列加扰。
结合第二方面，在第一种可能的实现方式中，当所述扩展PCI标识所述目标小区时，所述扩展PCI信息对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰；或者，
当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，所述扩展PCI信息与所述PCI信息的组合对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰。
结合第二方面或第二方面的第一种可能的实现方式，在第二种可能的实现方式中，所述扩展PCI为全球小区标识中的小区标识；或者，
所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
结合第二方面至第二方面的第二种可能的实现方式任一种，在第三种可能的实现方式中，所述第一广播消息中包括用于指示所述目标小区PCI的主同步信号PSS序列和辅同步序列SSS序列；
其中，所述基站中预配置了36个PCI，所述36个PCI由3种PSS序列和12中SSS序列的组合指示。
第三方面，提供一种终端设备，包括：
PCI确定单元，用于根据基站发送的第一广播消息，确定所述终端设备所在的目标小区的PCI；
第一扰码确定单元，用于根据所述目标小区的PCI，确定第一扰码；
扩展PCI确定单元，用于根据所述基站发送的第二广播消息和所述第一扰码，确定所述目标小区的扩展PCI；其中，所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合 标识所述目标小区。
结合第三方面，在第一种可能的实现方式中，所述终端设备还包括：
第二扰码确定单元，用于当所述扩展PCI标识所述目标小区时，根据所述扩展PCI确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码；或者，
第二扰码确定单元，用于当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，根据所述扩展PCI与所述目标小区的PCI的组合确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码。
结合第三方面或第三方面的第一种可能的实现方式，在第二种可能的实现方式中，所述扩展PCI为全球小区标识中的小区标识；或者，
所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
结合第三方面至第三方面的第二种可能的实现方式任一种，在第三种可能的实现方式中，所述第一广播消息中包括用于指示所述目标小区的PCI的主同步信号PSS序列和辅同步信号SSS序列；所述PCI确定单元具体用于：
根据用于指示所述通信系统中小区的PCI的PSS序列和SSS序列以及所述第一广播消息进行时频同步，确定所述目标小区的PCI。
结合第三方面至第三方面的第三种可能的实现方式任一种，在第四种可能的实现方式中，所述终端设备和/或所述基站中预配置的PCI个数为36；其中，所述36个PCI由3种PSS序列和12种SSS序列的组合指示。
第四方面，提供一种基站，包括：
第一发送单元，用于发送第一广播消息，所述第一广播消息承 载目标小区的PCI信息；
第二发送单元，用于发送第二广播消息，所述第二广播消息承载所述目标小区的扩展PCI信息；所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区；
其中，所述目标小区的PCI信息对应第一扰码序列，所述第二广播消息的扩展PCI信息被所述第一扰码序列加扰。
结合第四方面，在第一种可能的实现方式中，所述基站还包括：
加扰单元，用于当所述扩展PCI标识所述目标小区时，所述扩展PCI信息对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰；或者，
加扰单元，用于当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，所述扩展PCI信息与所述PCI信息的组合对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰。
结合第四方面或第四方面的第一种可能的实现方式，在第二种可能的实现方式中，所述扩展PCI为全球小区标识中的小区标识；或者，
所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
结合第四方面至第四方面的第二种可能的实现方式任一种，在第三种可能的实现方式中，所述第一广播消息中包括用于指示所述目标小区PCI的主同步信号PSS序列和辅同步序列SSS序列；
其中，所述基站中预配置了36个PCI，所述36个PCI由3种PSS序列和12中SSS序列的组合指示。
第五方面，提供一种终端设备，包括：存储器和处理器；
所述存储器用于存储一组代码，该代码用于控制所述处理器执行以下动作：
根据基站发送的第一广播消息，确定所述终端设备所在的目标小区的PCI；
根据所述目标小区的PCI，确定第一扰码；
根据所述基站发送的第二广播消息和所述第一扰码，确定所述目标小区的扩展PCI；其中，所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区。
结合第五方面，在第一种可能的实现方式中，所述处理器还用于：
当所述扩展PCI标识所述目标小区时，根据所述扩展PCI确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码；或者，
当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，根据所述扩展PCI与所述目标小区的PCI的组合确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码。
结合第五方面或第五方面的第一种可能的实现方式，在第二种可能的实现方式中，所述扩展PCI为全球小区标识中的小区标识；或者，
所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
结合第五方面至第五方面的第二种可能的实现方式任一种，在第三种可能的实现方式中，所述第一广播消息中包括用于指示所述目标小区的PCI的主同步信号PSS序列和辅同步信号SSS序列；所述处理器具体用于：
根据用于指示所述通信系统中小区的PCI的PSS序列和SSS序列以及所述第一广播消息进行时频同步，确定所述目标小区的PCI。
结合第五方面至第五方面的第三种可能的实现方式任一种，在 第四种可能的实现方式中，所述终端设备和/或所述基站中预配置的PCI个数为36；其中，所述36个PCI由3种PSS序列和12种SSS序列的组合指示。
第六方面，提供一种基站，包括：发送器；
所述发送器，用于发送第一广播消息，所述第一广播消息承载目标小区的PCI信息；
所述发送器还用于，发送第二广播消息，所述第二广播消息承载所述目标小区的扩展PCI信息；所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区；
其中，所述目标小区的PCI信息对应第一扰码序列，所述第二广播消息的扩展PCI信息被所述第一扰码序列加扰。
结合第六方面，在第一种可能的实现方式中，所述基站还包括存储器和处理器；
所述存储器用于存储一组代码，该代码用于控制所述处理器执行以下动作：
当所述扩展PCI标识所述目标小区时，所述扩展PCI信息对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰；或者，
当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，所述扩展PCI信息与所述PCI信息的组合对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰。
结合第六方面或第六方面的第一种可能的实现方式，在第二种可能的实现方式中，所述扩展PCI为全球小区标识中的小区标识；或者，
所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
结合第六方面至第六方面的第二种可能的实现方式任一种，在第三种可能的实现方式中，所述第一广播消息中包括用于指示所述目标小区PCI的主同步信号PSS序列和辅同步序列SSS序列；
其中，所述基站中预配置了36个PCI，所述36个PCI由3种PSS序列和12中SSS序列的组合指示。
第七方面，提供一种指示物理层小区标识PCI的系统，包括终端设备和基站，所述终端设备为第三方面或第五方面提供的任意一种终端设备，所述基站为第四方面或第六方面提供的任意一种基站。
本发明实施例提供的指示PCI的方法及装置，终端设备根据第一广播消息确定的PCI生成第一扰码，再根据第二广播消息确定出目标小区的扩展PCI。利用扩展PCI或者扩展PCI与目标小区的PCI的组合来标识目标小区，这样当NB M2M系统中的小区的PCI数量设置较少时，在一定范围内可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合区分PCI相同的小区，这样，基站和终端设备之间就可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合进行通信，即使终端设备同时接收到基站向具有相同PCI的小区发送的数据时，终端设备仍然可以正常的获取接收到的数据中的信息。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种指示PCI的方法的流程图；
图2为本发明实施例提供的又一种指示PCI的方法的流程图；
图3为本发明实施例提供的一种终端设备的结构示意图；
图4为本发明实施例提供的又一种终端设备的结构示意图；
图5为本发明实施例提供的再一种终端设备的结构示意图；
图6为本发明实施例提供的一种基站的结构示意图；
图7为本发明实施例提供的又一种基站的结构示意图；
图8为本发明实施例提供的再一种基站的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。本发明实施例中的“多个”是指两个或两个以上。
实施例一
本发明实施例提供一种指示PCI的方法，应用于通信系统，如图1所示，所述方法包括：
101、终端设备根据基站发送的第一广播消息，确定所述终端设备所在的目标小区的PCI。
本发明实施例提供的指示PCI的方法可以应用于NB M2M系统中，还可以应用在其他的通信系统中。本发明实施例中提及的终端设备可以是手机，也可以是应用在电力设备、水表、照明设备等设备中的通信装置，本发明实施例以及本发明的其他实施例对此都不做限定。
可选的，所述第一广播消息中包括用于指示所述目标小区的PCI的PSS序列和SSS序列；该情况下，步骤101可以包括：所述终端设备根据用于指示所述通信系统中小区的PCI的PSS序列和SSS序 列以及所述第一广播消息进行时频同步，确定所述目标小区的PCI。
具体的，终端设备中可以存储有通信系统中的用于指示小区PCI的全部PSS序列和全部SSS序列，当终端设备接收到第一广播消息时，将第一广播消息与自身存储的PSS序列进行互相关，确定出相关性最高的PSS序列；由于在第一广播消息中PSS序列和SSS序列的相对位置固定，检测出PSS后，即可得知SSS序列在第一广播消息中可能出现的位置，再将SSS序列在广播消息中可能出现的位置上的序列与自身存储的SSS序列进行互相关，确定出相关性最高的SSS序列；根据确定出的PSS序列和SSS序列计算出目标小区的PCI。
需要说明的是，一般来说，在通信系统中，带宽一般被划分为多个物理信道，物理信道分为广播信道、数据信道和控制信道等。基站在广播信道上发送广播消息，广播消息中可以包括系统消息、PSS序列、SSS序列和帧号检测序列等。
102、根据所述目标小区的PCI，确定第一扰码。
步骤102在具体实现时，终端设备在获取到目标小区的PCI之后，可以利用Gold序列生成第一扰码，Gold序列由m序列(maximal length linear feedback shift register sequence，最长线性反馈移存器序列，简称m序列)的优选对移位模2加得到，第一个m序列的初始值已知，第二个m序列的初始值可以根据应用自己设置。在本发明实施例中，可以将PCI作为第二个m序列的初始值的全部比特位或者部分比特位，本发明实施例不对其进行限制。该情况下，利用第一个m序列和第二个m序列生成的Gold序列即第一扰码。当PCI作为第二个m序列的初始值的部分比特位时，第二个m序列的初始值还可以包括终端标识、帧号等。
其中，第一扰码为广播信道的解扰序列。具体的，基站在发送广播消息前会对系统消息进行加扰。第一扰码作为解扰序列用于在终端设备接收到基站发送广播消息时对加扰后的系统消息进行解 码。
示例性的，基站对系统消息进行加扰具体可以为：将系统消息与扰码序列进行模2加运算。由于加扰和解扰互为逆运算，终端设备在接收到来自基站发送的广播消息时，可以将解扰序列与接收到的加扰后的系统消息进行模2加运算就可以恢复出系统消息，获取系统消息中携带的内容。
103、根据所述基站发送的第二广播消息和所述第一扰码，确定所述目标小区的扩展PCI；其中，所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区。
具体的，第二广播消息中携带有目标小区的扩展PCI。
示例性的，扩展PCI可以位于第二广播消息的系统消息中，该情况下，步骤103在具体实现时，终端设备可以根据第一扰码解析第二广播消息，获取第二广播消息中的系统消息中携带的扩展PCI。
需要说明的是，第一广播消息和第二广播消息可以为同一广播消息。
可选的，在步骤103之后，所述方法还可以包括：
当所述扩展PCI标识所述目标小区时，所述终端设备根据所述扩展PCI确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码；或者，
当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，所述终端设备根据所述扩展PCI与所述目标小区的PCI的组合确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码。
其中，第二扰码为数据信道、控制信道和随机接入信道等信道的解扰序列。终端设备接收到的来自基站的数据可以为基站通过数据信道或控制信道等信道发送的信令、控制信息、调度信息和下行数据等。
该可选的方法在具体实现时，可以参照步骤102的具体实现，不同的是，将扩展PCI，或者扩展PCI与目标小区的PCI的组合作为第二个m序列的初始值的全部比特位或者部分比特位。该情况下，利用第一个m序列和第二个m序列生成的Gold序列即第二扰码。当扩展PCI，或者扩展PCI与目标小区的PCI的组合作为第二个m序列的初始值的部分比特位时，第二个m序列的初始值还可以包括终端标识、帧号等。
该可选的方法，利用扩展PCI生成第二扰码时，可以将PCI相同的小区的扩展PCI设置不相同，则生成的第二扰码不相同；利用扩展PCI和目标小区的PCI的组合生成第二扰码时，可以使得PCI相同的小区的扩展PCI和目标小区的PCI的组合不相同，则生成的第二扰码不相同。不同小区利用第二扰码进行通信时不会产生干扰。
可选的，所述扩展PCI为全球小区标识中的小区标识；或者，所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
具体的，位置区标识中的部分比特位的选取可以根据实际情况进行确定；例如，当需要2个比特位的标识时，可以选取位置区标识中的任意2个比特位上的标识。
可选的，所述终端设备和/或所述基站中预配置的PCI个数为36；其中，所述36个PCI由3种PSS序列和12种SSS序列的组合指示。
该可选的方法，终端设备和/或基站中预配置的PCI个数较少，终端设备中存储的PSS序列和SSS序列也变少，在终端设备接收到第一广播消息时，进行时频同步的过程变简单，可以减小终端设备的功耗，降低终端设备的成本。
本发明实施例提供的指示PCI的方法，终端设备根据第一广播消息确定的PCI生成第一扰码，再根据第二广播消息确定出目标小 区的扩展PCI。利用扩展PCI或者扩展PCI与目标小区的PCI的组合来标识目标小区，这样当NB M2M系统中的小区的PCI数量设置较少时，在一定范围内可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合区分PCI相同的小区，这样，基站和终端设备之间就可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合进行通信，即使终端设备同时接收到基站向具有相同PCI的小区发送的数据时，终端设备仍然可以正常的获取接收到的数据中的信息。
实施例二
本发明实施例提供一种指示PCI的方法，应用于通信系统，如图2所示，所述方法包括：
201、基站发送第一广播消息，所述第一广播消息承载目标小区的PCI信息。
需要说明的是，本发明实施例中的相关解释可以参见本发明实施例一中的相关说明。
具体的，PCI信息为可以使得终端设备根据该信息获取其所在的小区(即目标小区)的PCI的信息，PCI信息具体可以为指示目标小区的PCI的PSS序列和SSS序列。
需要说明的是，在通信系统中，带宽一般被划分为多个物理信道，物理信道分为广播信道、数据信道和控制信道等。基站在广播信道上发送广播消息，广播消息中可以包括系统消息、PSS序列、SSS序列和帧号检测序列等。
202、发送第二广播消息，所述第二广播消息承载所述目标小区的扩展PCI信息；所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区；
其中，所述目标小区的PCI信息对应第一扰码序列，所述第二广播消息的扩展PCI信息被所述第一扰码序列加扰。
示例性的，扩展PCI信息可以位于第二广播消息的系统消息中， 扩展PCI信息为可以使得终端设备根据该信息获取目标小区的扩展PCI的信息。
具体的，终端设备可以利用目标小区的PCI信息生成第一扰码，第一扰码为广播信道的解扰序列，第一扰码可以解析基站发送的广播消息，获取广播消息携带的信息。
需要说明的是，步骤201和步骤202的执行顺序不分先后；例如，可以先执行步骤201再执行步骤202，也可以先执行步骤202再执行步骤201，也可以同时执行步骤201和步骤202。
需要说明的是，第一广播消息和第二广播消息可以为同一广播消息。
可选的，当所述扩展PCI标识所述目标小区时，所述扩展PCI信息对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰；或者，当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，所述扩展PCI信息与所述PCI信息的组合对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰。
具体的，终端设备可以利用扩展PCI信息或者扩展PCI信息与目标小区的PCI信息的组合生成第二扰码，第二扰码为数据信道、控制信道和随机接入信道等信道的解扰序列。第二扰码可以用于解析基站通过数据信道、控制信道和随机接入信道等信道发送的数据，获取数据中的信息。
可选的，所述扩展PCI为全球小区标识中的小区标识；或者，所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
具体的，位置区标识中的部分比特位的选取可以根据实际情况进行确定；例如，当需要2个比特位的标识时，可以选取位置区标识中的任意2个比特位上的标识。
可选的，所述第一广播消息中包括用于指示所述目标小区PCI的PSS序列和SSS序列；其中，所述基站中预配置了36个PCI，所述36个PCI由3种PSS序列和12中SSS序列的组合指示。
该可选的方法，终端设备和/或所述基站中预配置的PCI个数较少，终端设备中存储的PSS序列和SSS序列也变少，在终端设备接收到第一广播消息时，进行时频同步的过程变简单，可以减小终端设备的功耗，降低终端设备的成本。
本发明实施例提供的指示PCI的方法，基站向终端设备发送第一广播消息和第二广播消息，终端设备根据第一广播消息和第二广播消息确定目标小区的PCI和扩展PCI。利用扩展PCI或者扩展PCI与目标小区的PCI的组合来标识目标小区，这样当NB M2M系统中的小区的PCI数量设置较少时，在一定范围内可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合区分PCI相同的小区，这样，基站和终端设备之间就可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合进行通信，即使终端设备同时接收到基站向具有相同PCI的小区发送的数据时，终端设备仍然可以正常的获取接收到的数据中的信息。
实施例三
如图3所示，本发明实施例提供一种终端设备30，用于实现图1所示的指示PCI的方法，该终端设备30包括：
PCI确定单元301，用于根据基站发送的第一广播消息，确定所述终端设备所在的目标小区的PCI；
第一扰码确定单元302，用于根据所述目标小区的PCI，确定第一扰码；
扩展PCI确定单元303，用于根据所述基站发送的第二广播消息和所述第一扰码，确定所述目标小区的扩展PCI；其中，所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区。
可选的，如图4所示，所述终端设备还包括：
第二扰码确定单元304，用于当所述扩展PCI标识所述目标小区时，根据所述扩展PCI确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码；或者，
第二扰码确定单元304，用于当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，根据所述扩展PCI与所述目标小区的PCI的组合确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码。
可选的，所述扩展PCI为全球小区标识中的小区标识；或者，
所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
可选的，所述第一广播消息中包括用于指示所述目标小区的PCI的主同步信号PSS序列和辅同步信号SSS序列；所述PCI确定单元301具体用于：根据用于指示所述通信系统中小区的PCI的PSS序列和SSS序列以及所述第一广播消息进行时频同步，确定所述目标小区的PCI。
可选的，所述终端设备和/或所述基站中预配置的PCI个数为36；其中，所述36个PCI由3种PSS序列和12种SSS序列的组合指示。
本发明实施例提供的终端设备，根据第一广播消息确定的PCI生成第一扰码，再根据第二广播消息确定出目标小区的扩展PCI。利用扩展PCI或者扩展PCI与目标小区的PCI的组合来标识目标小区，这样当NB M2M系统中的小区的PCI数量设置较少时，在一定范围内可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合区分PCI相同的小区，这样，基站和终端设备之间就可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合进行通信，即使终端设备同时接收到基站向具有相同PCI的小区发送的数据时，终端设备仍然可以正常的获取接收到的数据中的信息。
实施例四
在硬件实现上，实施例三中的各个模块可以可以以硬件形式内嵌于或独立于终端设备的处理器中，也可以以软件形式存储于终端设备的存储器中，以便于处理器调用执行以上各个模块对应的操作，该处理器可以为中央处理单元(CPU)、微处理器、单片机等。
如图5所示，为本发明实施例提供的一种终端设备50，用于实现图1所示的指示PCI的方法，所述终端设备50包括：存储器501、处理器502和总线系统503。
其中，存储器501和处理器502之间是通过总线系统503耦合在一起的，其中存储器501可能包含随机存取存储器，也可能还包括非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。总线系统503可以分为地址总线、数据总线、控制总线等。为便于表示，图5中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
所述存储器501用于存储一组代码，该代码用于控制所述处理器502执行以下动作：
根据基站发送的第一广播消息，确定所述终端设备所在的目标小区的PCI；
根据所述目标小区的PCI，确定第一扰码；
根据所述基站发送的第二广播消息和所述第一扰码，确定所述目标小区的扩展PCI；其中，所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区。
可选的，所述处理器502还用于：
当所述扩展PCI标识所述目标小区时，根据所述扩展PCI确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码；或者，
当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小 区时，根据所述扩展PCI与所述目标小区的PCI的组合确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码。
可选的，所述扩展PCI为全球小区标识中的小区标识；或者，所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
可选的，所述第一广播消息中包括用于指示所述目标小区的PCI的主同步信号PSS序列和辅同步信号SSS序列；所述处理器502具体用于：根据用于指示所述通信系统中小区的PCI的PSS序列和SSS序列以及所述第一广播消息进行时频同步，确定所述目标小区的PCI。
可选的，所述终端设备和/或所述基站中预配置的PCI个数为36；其中，所述36个PCI由3种PSS序列和12种SSS序列的组合指示。
本发明实施例提供的终端设备，根据第一广播消息确定的PCI生成第一扰码，再根据第二广播消息确定出目标小区的扩展PCI。利用扩展PCI或者扩展PCI与目标小区的PCI的组合来标识目标小区，这样当NB M2M系统中的小区的PCI数量设置较少时，在一定范围内可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合区分PCI相同的小区，这样，基站和终端设备之间就可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合进行通信，即使终端设备同时接收到基站向具有相同PCI的小区发送的数据时，终端设备仍然可以正常的获取接收到的数据中的信息。
实施例五
如图6所示，本发明实施例提供一种基站60，用于实现图2所示的指示PCI的方法，该基站60包括：
第一发送单元601，用于发送第一广播消息，所述第一广播消息承载目标小区的PCI信息；
第二发送单元602，用于发送第二广播消息，所述第二广播消息承载所述目标小区的扩展PCI信息；所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区；其中，所述目标小区的PCI信息对应第一扰码序列，所述第二广播消息的扩展PCI信息被所述第一扰码序列加扰。
可选的，如图7所示，所述基站60还包括：
加扰单元603，用于当所述扩展PCI标识所述目标小区时，所述扩展PCI信息对应第二扰码，所述基站60根据所述第二扰码对在所述目标小区上传输的数据进行加扰；或者，
加扰单元603，用于当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，所述扩展PCI信息与所述PCI信息的组合对应第二扰码，所述基站60根据所述第二扰码对在所述目标小区上传输的数据进行加扰。
可选的，所述扩展PCI为全球小区标识中的小区标识；或者，
所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
可选的，所述第一广播消息中包括用于指示所述目标小区PCI的主同步信号PSS序列和辅同步序列SSS序列；其中，所述基站60中预配置了36个PCI，所述36个PCI由3种PSS序列和12中SSS序列的组合指示。
本发明实施例提供的基站，向终端设备发送第一广播消息和第二广播消息，终端设备根据第一广播消息和第二广播消息确定目标小区的PCI和扩展PCI。利用扩展PCI或者扩展PCI与目标小区的PCI的组合来标识目标小区，这样当NB M2M系统中的小区的PCI数量设置较少时，在一定范围内可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合区分PCI相同的小区，这样，基站和终端设备之间就可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合 进行通信，即使终端设备同时接收到基站向具有相同PCI的小区发送的数据时，终端设备仍然可以正常的获取接收到的数据中的信息。
实施例六
在硬件实现上，实施例五中的各个模块可以可以以硬件形式内嵌于或独立于基站的处理器中，也可以以软件形式存储于终端设备的存储器中，以便于处理器调用执行以上各个模块对应的操作，该处理器可以为中央处理单元(CPU)、微处理器、单片机等。
如图8所示，为本发明实施例提供的一种基站80，用于实现图2所示的指示PCI的方法，所述基站80包括：存储器801、处理器802、发送器803和总线系统804。
其中，存储器801、处理器802和发送器803之间是通过总线系统804耦合在一起的，其中存储器801可能包含随机存取存储器，也可能还包括非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。总线系统804可以分为地址总线、数据总线、控制总线等。为便于表示，图8中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
所述存储器801用于存储一组代码，该代码用于控制所述处理器802执行以下动作：确定第一广播信息和第二广播信息；
所述发送器803，用于发送第一广播消息，所述第一广播消息承载目标小区的PCI信息；
所述发送器803还用于，发送第二广播消息，所述第二广播消息承载所述目标小区的扩展PCI信息；所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区；
其中，所述目标小区的PCI信息对应第一扰码序列，所述第二广播消息的扩展PCI信息被所述第一扰码序列加扰。
可选的，所述处理器802还用于，当所述扩展PCI标识所述目 标小区时，所述扩展PCI信息对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰；或者，
当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，所述扩展PCI信息与所述PCI信息的组合对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰。
可选的，所述扩展PCI为全球小区标识中的小区标识；或者，
所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
可选的，所述第一广播消息中包括用于指示所述目标小区PCI的主同步信号PSS序列和辅同步序列SSS序列；其中，所述基站中预配置了36个PCI，所述36个PCI由3种PSS序列和12中SSS序列的组合指示。
本发明实施例提供的基站，向终端设备发送第一广播消息和第二广播消息，终端设备根据第一广播消息和第二广播消息确定目标小区的PCI和扩展PCI。利用扩展PCI或者扩展PCI与目标小区的PCI的组合来标识目标小区，这样当NB M2M系统中的小区的PCI数量设置较少时，在一定范围内可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合区分PCI相同的小区，这样，基站和终端设备之间就可以利用扩展PCI或者扩展PCI与目标小区的PCI的组合进行通信，即使终端设备同时接收到基站向具有相同PCI的小区发送的数据时，终端设备仍然可以正常的获取接收到的数据中的信息。
本发明实施例提供一种指示PCI的系统，包括终端设备和基站，终端设备可以为实施例三或实施例四提供的任意一种终端设备，基站可以为实施例五或实施例六提供的任意一种基站。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施 例仅仅是示意性的，例如，所述模块的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个模块或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。
所述作为分离部件说明的模块可以是或者也可以不是物理上分开的，作为模块显示的部件可以是或者也可以不是物理模块，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能模块可以集成在一个处理模块中，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用硬件加软件功能模块的形式实现。
上述以软件功能模块的形式实现的集成的模块，可以存储在一个计算机可读取存储介质中。上述软件功能模块存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (19)

  1. 一种指示物理层小区标识PCI的方法，应用于通信系统，其特征在于，包括：
    终端设备根据基站发送的第一广播消息，确定所述终端设备所在的目标小区的PCI；
    根据所述目标小区的PCI，确定第一扰码；
    根据所述基站发送的第二广播消息和所述第一扰码，确定所述目标小区的扩展PCI；其中，所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区。
  2. 根据权利要求1所述的方法，其特征在于，在所述确定所述目标小区的扩展PCI之后，所述方法还包括：
    当所述扩展PCI标识所述目标小区时，所述终端设备根据所述扩展PCI确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码；或者，
    当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，所述终端设备根据所述扩展PCI与所述目标小区的PCI的组合确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码。
  3. 根据权利要求1或2所述的方法，其特征在于，所述扩展PCI为全球小区标识中的小区标识；或者，
    所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
  4. 根据权利要求1至3任一项所述的方法，其特征在于，所述第一广播消息中包括用于指示所述目标小区的PCI的主同步信号PSS序列和辅同步信号SSS序列；所述终端设备根据基站发送的第一广播消息，确定所述终端设备所在的目标小区的PCI，包括：
    所述终端设备根据用于指示所述通信系统中小区的PCI的PSS 序列和SSS序列以及所述第一广播消息进行时频同步，确定所述目标小区的PCI。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，所述终端设备和/或所述基站中预配置的PCI个数为36；其中，所述36个PCI由3种PSS序列和12种SSS序列的组合指示。
  6. 一种指示物理层小区标识PCI的方法，应用于通信系统，其特征在于，包括：
    基站发送第一广播消息，所述第一广播消息承载目标小区的PCI信息；
    发送第二广播消息，所述第二广播消息承载所述目标小区的扩展PCI信息；所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区；
    其中，所述目标小区的PCI信息对应第一扰码序列，所述第二广播消息的扩展PCI信息被所述第一扰码序列加扰。
  7. 根据权利要求6所述的方法，其特征在于，当所述扩展PCI标识所述目标小区时，所述扩展PCI信息对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰；或者，
    当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，所述扩展PCI信息与所述PCI信息的组合对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰。
  8. 根据权利要求6或7所述的方法，其特征在于，所述扩展PCI为全球小区标识中的小区标识；或者，
    所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
  9. 根据权利要求6至8任一项所述的方法，其特征在于，所述第一广播消息中包括用于指示所述目标小区PCI的主同步信号PSS序列和辅同步序列SSS序列；
    其中，所述基站中预配置了36个PCI，所述36个PCI由3种PSS序列和12中SSS序列的组合指示。
  10. 一种终端设备，其特征在于，包括：
    PCI确定单元，用于根据基站发送的第一广播消息，确定所述终端设备所在的目标小区的PCI；
    第一扰码确定单元，用于根据所述目标小区的PCI，确定第一扰码；
    扩展PCI确定单元，用于根据所述基站发送的第二广播消息和所述第一扰码，确定所述目标小区的扩展PCI；其中，所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区。
  11. 根据权利要求10所述的终端设备，其特征在于，所述终端设备还包括：
    第二扰码确定单元，用于当所述扩展PCI标识所述目标小区时，根据所述扩展PCI确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码；或者，
    第二扰码确定单元，用于当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，根据所述扩展PCI与所述目标小区的PCI的组合确定第二扰码；所述第二扰码用于使所述终端设备对接收到的来自所述基站的数据进行解码。
  12. 根据权利要求10或11所述的终端设备，其特征在于，所述扩展PCI为全球小区标识中的小区标识；或者，
    所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
  13. 根据权利要求10至12任一项所述的终端设备，其特征在于，所述第一广播消息中包括用于指示所述目标小区的PCI的主同步信号PSS序列和辅同步信号SSS序列；所述PCI确定单元具体用于：
    根据用于指示所述通信系统中小区的PCI的PSS序列和SSS序列以及所述第一广播消息进行时频同步，确定所述目标小区的PCI。
  14. 根据权利要求10至13任一项所述的终端设备，其特征在于，所述终端设备和/或所述基站中预配置的PCI个数为36；其中，所述36个PCI由3种PSS序列和12种SSS序列的组合指示。
  15. 一种基站，其特征在于，包括：
    第一发送单元，用于发送第一广播消息，所述第一广播消息承载目标小区的PCI信息；
    第二发送单元，用于发送第二广播消息，所述第二广播消息承载所述目标小区的扩展PCI信息；所述扩展PCI标识所述目标小区或者所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区；
    其中，所述目标小区的PCI信息对应第一扰码序列，所述第二广播消息的扩展PCI信息被所述第一扰码序列加扰。
  16. 根据权利要求15所述的基站，其特征在于，所述基站还包括：
    加扰单元，用于当所述扩展PCI标识所述目标小区时，所述扩展PCI信息对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰；或者，
    加扰单元，用于当所述扩展PCI与所述目标小区的PCI的组合标识所述目标小区时，所述扩展PCI信息与所述PCI信息的组合对应第二扰码，所述基站根据所述第二扰码对在所述目标小区上传输的数据进行加扰。
  17. 根据权利要求15或16所述的基站，其特征在于，所述扩展PCI为全球小区标识中的小区标识；或者，
    所述扩展PCI为全球小区标识中的小区标识和所述全球小区标识中的位置区标识中的全部比特位或者部分比特位的组合。
  18. 根据权利要求15至17任一项所述的基站，其特征在于，所 述第一广播消息中包括用于指示所述目标小区PCI的主同步信号PSS序列和辅同步序列SSS序列；
    其中，所述基站中预配置了36个PCI，所述36个PCI由3种PSS序列和12中SSS序列的组合指示。
  19. 一种指示物理层小区标识PCI的系统，其特征在于，包括如权利要求10-14任一项所述的终端设备和如权利要求15-18任一项所述的基站。
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Publication number Priority date Publication date Assignee Title
CN101932075A (zh) * 2009-06-24 2010-12-29 华为技术有限公司 信息传递方法、信息获取方法及装置
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US8842633B2 (en) * 2009-05-04 2014-09-23 Blackberry Limited Systems and methods for mobile stations to identify radio access technologies
US8509110B2 (en) * 2009-06-19 2013-08-13 Lg Electronics Inc. Cell searching method and apparatus in multi-carrier system
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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