WO2010075731A1 - Procédé de configuration et équipement pour un canal de synchronisation secondaire et procédé de corrélation et équipement pour des sous-porteuses - Google Patents

Procédé de configuration et équipement pour un canal de synchronisation secondaire et procédé de corrélation et équipement pour des sous-porteuses Download PDF

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Publication number
WO2010075731A1
WO2010075731A1 PCT/CN2009/075524 CN2009075524W WO2010075731A1 WO 2010075731 A1 WO2010075731 A1 WO 2010075731A1 CN 2009075524 W CN2009075524 W CN 2009075524W WO 2010075731 A1 WO2010075731 A1 WO 2010075731A1
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Prior art keywords
sequence
base station
secondary synchronization
cell
sequence set
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PCT/CN2009/075524
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English (en)
Chinese (zh)
Inventor
孙长印
方惠英
王文焕
曲红云
鲁照华
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中兴通讯股份有限公司
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Publication of WO2010075731A1 publication Critical patent/WO2010075731A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for configuring a secondary synchronization channel, a method and apparatus for subcarrier mapping, and a method and apparatus for transmitting a synchronization signal of a secondary synchronization channel.
  • Orthogonal Frequency Division Multiplex is a multi-carrier transmission technology that can effectively reduce system-to-multipath by converting a high-speed data stream into a set of low-speed parallel data streams. Sensitivity of fading channel frequency selectivity; by introducing a cyclic prefix, the system can also enhance the ability of the system to resist Inter-symbol Interference (ISI); in addition, the technology also has the characteristics of high bandwidth utilization and implementation of the single-chip.
  • OFDM technology is increasingly used in wireless communication watersheds, for example, Wireless Local Area Network (WLAN) systems, 802.16e systems based on Orthogonal Frequency Division Multiple Access, and 802.16.
  • WLAN Wireless Local Area Network
  • 802.16e systems based on Orthogonal Frequency Division Multiple Access and 802.16.
  • the next generation of evolved 802.16m systems (fourth generation communication systems) and the like are all systems of OFDM technology.
  • the terminal usually needs to access the network by means of a synchronization channel.
  • the access step may include:
  • the terminal can start the subsequent access process according to the information in the broadcast message.
  • the access process is a very important process.
  • An important indicator of the access process is the access time. The shorter the access time, the higher the system performance. but, Since access needs to be implemented by means of a synchronization channel, resource occupation will constitute an overhead relative to a traffic channel transmitting user information. Therefore, if it is desired to construct a mobile communication system with excellent performance, it is necessary to balance between access performance and synchronization channel resource occupation.
  • superframe 101 is composed of 4 unit frames 102, and superframe control information 103 is located on a number of symbols at the beginning of the superframe.
  • the unit frame 102 is composed of 8 subframe units 104, and the subframe unit 104 is divided into a downlink subframe unit and an uplink subframe unit, which can be configured according to the system.
  • the subframe unit 104 is composed of six OFDM symbols 105.
  • the superframe, unit frame, and subframe three-layer frame structure adopts a layered synchronization channel design, that is, the synchronization channel is divided into a primary synchronization channel (P-SCH) and a secondary synchronization channel (Synchronization Channel, S- SCH).
  • P-SCH primary synchronization channel
  • S- SCH secondary synchronization channel
  • the type of the base station system is more diverse, and is divided into a macro base station (cell), a micro base station (cell), a home base station (Femto BS, which may also be called a sub base station, etc.), and a relay (Relay).
  • Base stations, etc., different base station systems also have different system configurations, for example, different system bandwidths, different multi-carrier modes, and the like.
  • the present invention has been made in view of the problem that the synchronization channel design scheme in the related art cannot clearly identify the cell ID information of different types of base stations and the expansion requirements of the Femto base station.
  • the main object of the present invention is to provide a configuration scheme of a secondary synchronization channel, a subcarrier mapping scheme, and a synchronization signal transmission scheme of a secondary synchronization channel.
  • a method for configuring a secondary synchronization channel for configuring a synchronization signal on a secondary synchronization channel in an orthogonal frequency division multiplexing system is provided.
  • a method for configuring a secondary synchronization channel includes: configuring a first basic sequence set for indicating each combination of a cell ID and a sector ID carried by a secondary synchronization channel of a macro base station; and/or configuring to indicate a home base station A second basic sequence set of each combination of a cell ID and a sector ID of the associated macro base station, and a home base station ID sequence set for indicating ID information of the home base station.
  • the process of configuring the first basic sequence set may include: determining a first mapping relationship table between each combination of a cell ID and a sector ID carried by the secondary synchronization channel of the macro base station and the first basic sequence set sequence.
  • the process of configuring the second basic sequence set may include: determining a second mapping relationship table of each combination of the cell ID and the sector ID of the belonging macro base station of the home base station and the second sequence set sequence, and determining A third mapping relationship table between the ID information of the home base station and the sequence sequence of the home base station ID sequence.
  • the second sequence may be searched for from the second basic sequence according to the combination of the actual cell ID and the actual sector ID of the macro base station to which the home base station belongs, and the second mapping relationship table. And searching for a corresponding third sequence from the family base station ID sequence according to the actual ID information of the home base station and the third mapping relationship table, and combining the second sequence and the third sequence to obtain a synchronization sequence of the home base station.
  • the manner of combining the second sequence and the third sequence comprises at least one of the following: dot product, frequency division combination, and interlace combination.
  • the sequence of the basic sequence set and the set of home base station ID sequences comprise at least one of the following: a pseudo random sequence, a zero correlation sequence, an orthogonal sequence, a differential sequence of a pseudo random sequence, a differential sequence of zero correlation sequences, an orthogonal sequence Differential sequence.
  • a method for configuring a secondary synchronization channel for configuring a synchronization signal on a secondary synchronization channel in an orthogonal frequency division multiplexing system is provided.
  • the method for configuring a secondary synchronization channel includes: dividing cell ID information carried in a synchronization signal into a plurality of ID subsets according to system configuration information; and configuring, for each ID subset, a type sequence for indicating a type thereof Set, and a set of basic sequences used to represent ID information within its subset.
  • the system configuration information includes base station type information and/or multi-carrier configuration information, where the base station type includes a macro base station, and/or a home base station, and/or a relay base station, and the multi-carrier configuration includes a fully configured carrier and/or a partial configuration. Carrier.
  • the plurality of ID subsets obtained by the partitioning may include at least one of the following: a macro base station cell ID subset, a home base station cell ID subset, and a relay base station cell ID subset.
  • the processing of configuring the sequence set and the basic sequence set may include at least one of the following: for the macro base station cell ID subset, dividing the cell ID into the packet information, the cell ID in the packet, and the sector ID in the packet Information, and the type sequence of the configured type sequence set respectively represents the fully configured carrier, the partial configuration carrier, and the cell ID packet number, and the basic sequence of the configured basic sequence set represents the cell ID information within the packet and the sector within the packet Various combinations of ID information;
  • the family base station cell is represented by the type sequence of the configured type sequence set, and the home base station cell ID information is represented by the basic sequence of the configured basic sequence set;
  • the relay base station is represented by the type sequence of the configured type sequence set, and the relay base station ID information is represented by the basic sequence of the configured basic sequence set.
  • the method may further include at least one of the following processes:
  • the corresponding basic sequence is selected from the configured basic sequence set according to the combination of the actual cell ID and the sector ID, and the selected basic sequence is combined with the type sequence corresponding to the macro base station in the type sequence set to obtain the secondary synchronization of the macro base station. Synchronization sequence of the channel;
  • the corresponding basic sequence is selected according to the actual home base station cell ID from the configured basic sequence set, and the selected basic sequence is combined with the type sequence corresponding to the family base station in the type sequence set to obtain the synchronization sequence of the secondary synchronization channel of the home base station.
  • the corresponding basic sequence is selected according to the actual relay base station cell ID from the configured basic sequence set, and the selected basic sequence is combined with the type sequence corresponding to the type sequence centralized relay base station to obtain the secondary synchronization of the relay base station.
  • the synchronization sequence of the channel is selected according to the actual relay base station cell ID from the configured basic sequence set, and the selected basic sequence is combined with the type sequence corresponding to the type sequence centralized relay base station to obtain the secondary synchronization of the relay base station.
  • the sequence in the basic sequence set and the sequence in the type sequence set include at least one of the following: a pseudo random sequence, a zero correlation sequence, an orthogonal sequence, a differential sequence of a pseudo random sequence, a differential sequence of a zero correlation sequence, an orthogonal sequence Differential sequence.
  • a seed carrier mapping method for mapping a synchronization sequence of a secondary synchronization channel in an orthogonal frequency division multiplexing system to a subcarrier.
  • the subcarrier mapping method includes: in the case where the number of useful subcarriers is L, for subcarriers whose subcarrier numbers are smaller than L/2, subcarrier mapping of different sectors is performed according to the following formula:
  • k is the sector number and u is the element number in the sequence
  • subcarrier mapping for different sectors is performed according to the following formula:
  • a secondary synchronization channel configuration apparatus for configuring a synchronization signal on a secondary synchronization channel in an orthogonal frequency division multiplexing system.
  • the apparatus for configuring a secondary synchronization channel includes: a first configuration module, configured to configure a first basic sequence set for indicating each combination of a cell ID and a sector ID carried by a secondary synchronization channel of the macro base station; and/or And a second configuration module, configured to configure a second basic sequence set for indicating each combination of a cell ID and a sector ID of the associated macro base station of the home base station, and a home base station ID sequence set for indicating ID information of the home base station.
  • a configuration apparatus for a secondary synchronization channel for configuring a synchronization signal on a secondary synchronization channel in an orthogonal frequency division multiplexing system.
  • the configuration device of the secondary synchronization channel includes: a dividing module, configured to divide the cell ID information carried in the synchronization signal into a plurality of ID subsets according to system configuration information; and a first configuration module, configured to use each ID sub- The set configuration is used to represent a type sequence set of the corresponding ID subset type; the second configuration module is configured to configure, for each ID sub-set, a basic sequence set for indicating ID information in a subset of the corresponding ID subset.
  • a seed carrier mapping apparatus for mapping a synchronization sequence of a secondary synchronization channel in an orthogonal frequency division multiplexing system to a subcarrier, wherein the number of useful subcarriers is L.
  • the subcarrier mapping apparatus includes: a first mapping module, configured to perform subcarrier mapping of different sectors on subcarriers whose subcarrier numbers are smaller than L/2 according to the following formula:
  • a second mapping module configured to perform subcarrier mapping of different sectors on subcarriers with subcarrier numbers greater than L/2 according to the following formula:
  • a synchronization signal transmission method for a secondary synchronization channel for transmitting a secondary synchronization sequence of a synchronization signal of an orthogonal frequency division multiplexing system is provided.
  • a synchronization signal transmission method of a secondary synchronization channel according to the present invention includes:
  • a synchronization signal transmitting apparatus for a secondary synchronization channel for transmitting a secondary synchronization sequence of a synchronization signal of an orthogonal frequency division multiplexing system is provided.
  • the information in the synchronization signal on the secondary synchronization channel in the orthogonal frequency division multiplexing system is mapped and the synchronization signal is generated by the sequence in the sequence set, thereby solving the synchronous channel design scheme in the related art.
  • the type and ID information of each base station can be clearly identified, and the various changes of the base station can be flexibly adapted, which is helpful. Optimize system performance.
  • FIG. 1 is a schematic diagram of a frame structure according to the related art
  • FIG. 2 is a schematic structural diagram of a P-SCH and an S-SCH according to the related art
  • 3 is a flowchart of a method for configuring a secondary synchronization channel according to Embodiment 1 of the method of the present invention
  • FIG. 4 is a schematic diagram of a method for configuring a secondary synchronization channel according to Embodiment 1 of the present invention
  • FIG. 5 is a schematic diagram of a specific example of a cell packet according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of processing of a subcarrier mapping according to an embodiment of the present invention
  • FIG. 13 is a flowchart of a method for transmitting a synchronization signal of a secondary synchronization channel according to Embodiment 3 of the method of the present invention.
  • FIG 14 is a block diagram of a synchronizing signal transmitting apparatus of a secondary synchronization channel according to a fourth embodiment of the apparatus of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The synchronization channel design scheme in the related art cannot clearly identify the cell ID information of different types of base stations, and cannot satisfy the expansion requirement of the Femto base station.
  • the present invention proposes to use the sequence-pair orthogonal frequency division multiplexing in the sequence set.
  • the information in the synchronization signal on the secondary synchronization channel in the system is mapped, and then the scheme of configuring and generating the synchronization signal can clearly identify the type and ID information of each base station, and can flexibly adapt to various changes of the base station, Helps optimize system performance.
  • FIG. 2 is a structural diagram of P-SCH and S-SCH related to the present invention.
  • P-SCH 201 and S-SCH 202 are respectively transmitted in a superframe, and P-SCH 201 is transmitted at the beginning of a 16m superframe, S -SCH 202 the second 16m single in the superframe The first symbol of the bit frame is sent.
  • P-SCH 201 is transmitted once in the superframe
  • S-SCH 202 is transmitted twice in the superframe
  • P-SCH 201 is transmitted at the beginning of the 16m superframe
  • S-SCH 202 is in The second 16m unit frame in the superframe and the first symbol of the fourth 16m unit frame are transmitted.
  • P-SCH 201 is transmitted once in the superframe
  • S-SCH 202 is transmitted three times in the superframe
  • P-SCH 201 is transmitted at the beginning of the 16m superframe
  • S-SCH 202 is The first symbol of the second 16m unit frame, the third 16m unit frame, and the fourth 16m unit frame in the superframe is transmitted.
  • a method for configuring a secondary synchronization channel for configuring a synchronization signal on an S-SCH in an orthogonal frequency division multiplexing system.
  • the configuration method of the S-SCH includes: Step S302 and Step S304. It should be noted that the steps described in the method may be performed in a computer system such as a set of computer executable instructions, and although the logical order is illustrated in FIG. 3, in some cases, may be different The steps shown or described are performed in the order herein.
  • Step S302 configuring a first basic sequence set for indicating each combination of a cell ID and a sector ID carried by the S-SCH of the macro base station;
  • Step S304 configuring a second basic sequence set for indicating each combination of the cell ID and the sector ID of the associated macro base station of the Femto base station, and a Femto base station ID sequence set for indicating the ID information of the Femto base station.
  • the process of configuring the first basic sequence set may include: determining a first mapping relationship table between each combination of the cell ID and the sector ID carried by the S-SCH of the macro base station and the first basic sequence set sequence.
  • the actual cell ID can be obtained according to the macro base station.
  • the combination with the actual sector ID and the first mapping relationship table finds the corresponding first sequence from the first basic sequence set as the synchronization sequence of the macro base station.
  • the information carried by the S-SCH of the macro base station is represented by a synchronization sequence (i.e., corresponding to the first sequence described above).
  • the information carried by the Femto base station S-SCH is carried by different sequence sets.
  • the process of configuring the second basic sequence set includes: determining a second mapping relationship table between each combination of the cell ID and the sector ID of the associated macro base station of the Femto base station and the second basic sequence set sequence, and determining the ID of the Femto base station.
  • the corresponding second sequence may be searched from the second basic sequence set according to the combination of the actual cell ID and the actual sector ID of the macro base station to which the Femto base station belongs, and the second mapping relationship table, and And searching for a corresponding third sequence from the Femto base station ID sequence according to the actual ID information of the Femto base station and the third mapping relationship table.
  • the cell ID and sector ID information of the macro base station to which the Femto base station belongs is represented by the sequence corresponding to the second sequence described above.
  • the Femto ID information of the Femto base station is represented by another Femto ID sequence set, that is, the sequence (corresponding to the above third sequence).
  • FIG. 4 is a schematic diagram showing the processing of generating a synchronization sequence of the Femto base station S-SCH in the S-SCH configuration method according to the present embodiment.
  • the manner in which the second sequence and the third sequence are combined includes a dot product, a frequency division combination, and an interlace combination.
  • the sequence in the basic sequence set and the sequence in the Femto base station ID sequence set include at least one of the following: a pseudo random sequence, a zero correlation sequence, an orthogonal sequence, a differential sequence of the pseudo random sequence, and a zero correlation sequence A differential sequence, a difference sequence of the orthogonal sequences.
  • the information carried by the S-SCH of the macro base station is cell ID and sector ID information.
  • the information carried by the S-SCH is the cell ID and sector ID information of the home macro base station and the Femto ID information.
  • the information carried by the S-SCH of the macro base station is represented by a basic sequence set, that is, the synchronization sequence ⁇ .
  • mapping relationship between the Cell ID and the sector ID carried by the S-SCH of the macro base station and the sequence number of the S-SCH basic sequence set sequence may be defined in advance, based on FIG.
  • the cell grouping, the mapping relationship table is shown in Table 1.
  • the sequence corresponding to the sequence number of the basic sequence set (corresponding to the first sequence described) is found from Table 1 as the synchronization sequence of the macro base station.
  • FIG. 6 is a schematic diagram of processing of subcarrier mapping according to an embodiment of the present invention. As shown in Figure 6, the mapping is as follows:
  • Detecting the P-SCH determining whether it is a macro base station (cell) according to the control information carried by the P-SCH; if it is a macro base station, detecting, obtaining the cell ID and the sector ID;
  • the information carried by the S-SCH contains different sequence sets.
  • the cell ID and sector ID information of the macro base station to which the Femto base station belongs is represented by a basic sequence set, that is, a sequence.
  • the Femto ID information of the Femto base station is represented by another Femto ID sequence set, that is, a sequence representation.
  • the Cell ID and the sector ID find the sequence corresponding to the sequence number in the basic sequence set from Table 1.
  • the Femto ID find the sequence corresponding to the sequence number of the Femto ID sequence set in Table 2;
  • the synchronization sequence y of the Femto base station S-SCH is generated by the sequence and sequence dot product.
  • the three groups of different 144 subcarrier positions on the subcarriers are mapped, and the subcarriers are not set to zero.
  • the subcarriers are mapped as follows:
  • the process of the terminal accessing the Femto base station includes the following steps:
  • Detecting the P-SCH determining whether it is a Femto base station according to the control information carried by the P-SCH; if it is a Femto base station, detecting and "), obtaining the cell ID and the sector ID, and the Femto ID;
  • the subcarrier mapping of the S-SCH sequence can also take the mapping mode shown in FIG.
  • FIG. 7 is a schematic diagram of a carrier mapping method according to an embodiment of the present invention.
  • the first sector S-SCH is mapped to the original second sector subcarrier position, and the second sector S-SCH is mapped to The original third sector subcarrier position, the third sector S-SCH is mapped to the original first sector subcarrier position, as shown in the following mathematical expression:
  • FIG. 8 is a flowchart of processing performed by a terminal to perform cell search according to an embodiment of the present invention. As shown in FIG. 8, after the synchronization signaling of the secondary synchronization channel is configured by the foregoing processing, when the terminal performs the cell search, the following specifically includes the following processing:
  • the terminal obtains the base station type by using the base station type information carried by the primary synchronization channel (P-SCH); if it is a macro base station, step 82 is performed; if it is a Femto base station, step 84 is performed; step 82, detecting the sequence carried by the S-SCH, And performing step 83;
  • P-SCH primary synchronization channel
  • Step 83 Obtain a Cell ID and a sector ID information of the macro base station according to the mapping relationship table 1;
  • Step 84 The terminal detects the sequence and the sequence of the ⁇ carried by the S-SCH, and performs step 85;
  • Step 85 according to the mapping relationship table 1 and Table 2, obtain the Cell ID, the sector ID, and the macro ID of the macro base station to which the Femto base station belongs. Femto ID information.
  • the type and ID information of each base station can be clearly identified, and the various changes of the base station can be flexibly adapted to help optimize the performance of the system.
  • a secondary synchronization channel configuration apparatus for configuring a synchronization signal on a secondary synchronization channel in an orthogonal frequency division multiplexing system.
  • the apparatus for configuring a secondary synchronization channel includes: a first configuration module 92 and a second configuration module 94.
  • a first configuration module 92 configured to configure a first basic sequence set for indicating each combination of a cell ID and a sector ID carried by the S-SCH of the macro base station;
  • a second configuration module 94 configured to configure a second sequence set for indicating each combination of a cell ID and a sector ID of the associated macro base station of the Femto base station, and a Femto base station ID sequence set for indicating ID information of the Femto base station .
  • the apparatus according to the present embodiment can perform the synchronization signal of the secondary synchronization channel configured in the processing shown in FIG. 3 and FIG. 4 in the case of the cell partition shown in FIG. 5, and the processing thereof is not repeated here.
  • the type and ID information of each base station can be clearly identified, and the various changes of the base station can be flexibly adapted to help optimize the performance of the system.
  • a method for configuring a secondary synchronization channel for configuring a synchronization signal on an S-SCH in an orthogonal frequency division multiplexing system.
  • the method for configuring the secondary synchronization channel includes step S1002 and step S1004.
  • the process shown in Figure 10 is as follows:
  • Step S1002 The cell ID information carried in the synchronization signal is divided into multiple ID subsets according to system configuration information.
  • Step S1004 For each ID subset, configure a type sequence set for indicating its type, and a basic sequence set for indicating the IDs in its subset.
  • each of the above ID subsets is represented by a combination of two different sequence sets, one sequence is a basic sequence set, which represents a cell ID in the subset, and the other is a type sequence set, and the type sequence is a subset identifier. Used for zone molecular sets.
  • the system configuration information includes base station type information and/or multi-carrier configuration information, where the base station type includes a macro base station, and/or a Femto base station, and/or a relay base station, and the multi-carrier configuration includes a fully configured carrier and/or a partial configuration. Carrier.
  • the divided plurality of ID subsets include at least one of the following: a macro base station cell ID subset, a Femto base station cell ID subset, and a relay base station cell ID subset.
  • the processing of configuring the sequence set and the basic sequence set includes at least one of the following:
  • the cell ID therein is divided into packet information, a cell ID in the packet, and a sector ID in the packet.
  • Information, and the type sequence of the configured type sequence set respectively represents the fully configured carrier, the partial configuration carrier, and the cell ID packet number
  • the basic sequence of the configured basic sequence set represents the cell ID information within the packet and the sector within the packet Various combinations of ID information
  • the Femto base station cell is represented by the type sequence of the configured type sequence set, and the Femto base station cell ID information is represented by the basic sequence of the configured basic sequence set;
  • the relay base station is represented by the type sequence of the configured type sequence set, and the relay base station ID information is represented by the basic sequence of the configured basic sequence set.
  • the method may further include the following At least one of the following:
  • the corresponding basic sequence is selected from the configured basic sequence set according to the combination of the actual cell ID and the sector ID, and the selected basic sequence is combined with the type sequence corresponding to the macro base station in the type sequence set to obtain the S- of the macro base station.
  • Synchronization sequence of SCH
  • the corresponding basic sequence is selected according to the actual Femto base station cell ID from the configured basic sequence set, and the selected basic sequence is combined with the type sequence corresponding to the Femto base station in the type sequence set to obtain the S-SCH synchronization sequence of the Femto base station.
  • the corresponding basic sequence is selected according to the actual relay base station cell ID from the configured basic sequence set, and the selected basic sequence is combined with the type sequence corresponding to the type sequence centralized relay base station to obtain the S- of the relay base station.
  • the synchronization sequence of the SCH is selected according to the actual relay base station cell ID from the configured basic sequence set, and the selected basic sequence is combined with the type sequence corresponding to the type sequence centralized relay base station to obtain the S- of the relay base station.
  • the sequence in the basic sequence set and the sequence in the type sequence set include at least one of: a pseudo random sequence, a zero correlation sequence, an orthogonal sequence, a differential sequence of the pseudo random sequence, a difference sequence of the zero correlation sequence, A sequence of differences of the orthogonal sequences.
  • the type and ID information of each base station can be clearly identified, and the various changes of the base station can be flexibly adapted to help optimize the performance of the system.
  • the division of the subset of cell IDs is divided into a macro cell ID subset (including a fully configured carrier and a partially configured carrier), a Femto cell ID subset, a Relay ID subset, and an extension. Reserved ID subsets, etc.
  • the number of Cell ID packets in the table is > 1 , if the number of Cell ID packets is equal to 1 means that the system does not perform Cell ID grouping. At this time, the Cell ID in the packet is the Cell ID.
  • the mapping relationship between the Cell ID (or the Cell ID in the group) and the sector information and the corresponding sequence number in the basic sequence set is as shown in Table 1.
  • the mapping relationship between the Femto ID and the corresponding sequence number in the basic sequence set is shown in Table 4.
  • Relay ID and sequence sequence corresponding to the basic sequence set The mapping table of numbers, as shown in Table 5.
  • the sequence m(i) corresponding to the type sequence set can be found from the mapping table 3.
  • the sequence corresponding to the sequence number of the basic sequence set can be found from the mapping relationship table 1.
  • the basic sequence set can be found from the mapping relationship table 4.
  • the sequence corresponding to the sequence number P « ;
  • the sequence P corresponding to the sequence number of the basic sequence set can be found from the mapping relationship table 5 (0.
  • the type and ID information of each base station can be clearly identified, and the various changes of the base station can be flexibly adapted to help optimize the performance of the system.
  • a secondary synchronization channel configuration apparatus for configuring a synchronization signal on an S-SCH in an orthogonal frequency division multiplexing system.
  • the apparatus for configuring a secondary synchronization channel includes: a division module 112, a first configuration module 114, and a second configuration module 116.
  • the dividing module 112 is configured to divide the cell ID information carried in the synchronization signal into multiple ID subsets according to system configuration information;
  • the first configuration module 114 is connected to the dividing module 112, configured to configure, for each ID subset, a type sequence set for indicating a corresponding ID subset type;
  • the second configuration module 116 is coupled to the partitioning module 112 for configuring, for each ID sub-section, a basic sequence set for indicating IDs within the subset of the corresponding ID subset.
  • the device can also perform synchronous signaling configuration of the secondary synchronization channel based on the mapping relationship shown in Table 1, Table 3, Table 4, and Table 5. The processing procedure is not repeated here.
  • a seed carrier mapping apparatus for mapping a synchronization sequence of an S-SCH in an orthogonal frequency division multiplexing system to a subcarrier, where the number of useful subcarriers is L.
  • the subcarrier mapping apparatus includes a first mapping module 122 and a second mapping module 124.
  • k is the sector number and u is the element number in the sequence
  • the second mapping module 124 is configured to perform subcarrier mapping of different sectors on the subcarriers whose subcarrier numbers are greater than L/2 according to the following formula:
  • the apparatus can perform subcarrier mapping according to the mapping manner shown in Fig. 7, thereby realizing the transmission of the synchronization signal of the secondary synchronization channel.
  • a synchronization signal transmission method for a secondary synchronization channel for transmitting a secondary synchronization sequence of a synchronization signal of an orthogonal frequency division multiplexing system.
  • the synchronization signal transmitting method of the secondary synchronization channel includes step S1302 and step S1304.
  • the length of the secondary synchronization sequence; for a system whose system bandwidth is a multiple of the base bandwidth m, the secondary synchronization sequence is configured as x mx 2 n + c , where m is a multiple;
  • Step S1304 The configured secondary synchronization sequence is transmitted by using an antenna of the transmitting end.
  • the transmission of the secondary synchronization sequence can be achieved.
  • a synchronization signal transmitting apparatus for a secondary synchronization channel for transmitting a secondary synchronization sequence of a synchronization signal of an orthogonal frequency division multiplexing system.
  • the synchronization signal transmitting apparatus of the secondary synchronization channel includes: a configuration module 142 and a transmitting module 144.
  • the transmitting module 144 is connected to the configuration module 142 for transmitting the configured secondary synchronization sequence through the antenna.
  • the transmission of the secondary synchronization sequence can be realized.
  • the information in the synchronization signal on the secondary synchronization channel in the orthogonal frequency division multiplexing system is mapped and the synchronization signal is generated by the sequence in the sequence set, thereby solving the related art.
  • the synchronization channel design scheme cannot clearly identify the cell ID information of different types of base stations and the problem that the Femto base station cannot meet the expansion requirements, and can clearly identify the type and ID information of each base station, and can flexibly adapt to each base station.
  • the changes can help optimize the performance of the system and meet the fast access requirements of the terminal in the scenario where a large number of Femto base stations are deployed.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

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

Abstract

L'invention concerne un procédé de configuration et un équipement pour un canal de synchronisation secondaire, et un procédé de corrélation et un équipement pour des sous-porteuses. Le procédé de configuration pour un canal de synchronisation secondaire comprend : la configuration du premier ensemble de séquences basiques qui est appliqué pour indiquer les combinaisons d'identifiants de cellules et d'identifiants de secteurs portées par un canal de synchronisation secondaire d'une station de base macro; et/ou la configuration du second ensemble de séquences basiques qui est appliqué pour indiquer les combinaisons d'identifiants de cellules et d'identifiants de secteurs d'une station de base macro à laquelle une station de base Femto appartient, et de l'ensemble de séquences d'identifiants de stations de base Femto qui est appliqué pour indiquer les informations d'identifiants de la station de base Femto. Avec l'aide de la présente invention, la corrélation des informations dans le signal de synchronisation du canal de synchronisation secondaire dans un système OFDM et la génération d'un signal de synchronisation par l'intermédiaire des séquences dans l'ensemble de séquences peuvent identifier les informations d'identifiants et les types des stations de base de manière explicite et peuvent adapter les modifications des stations de base de manière flexible, ce qui aide à optimiser les performances du système.
PCT/CN2009/075524 2009-01-05 2009-12-11 Procédé de configuration et équipement pour un canal de synchronisation secondaire et procédé de corrélation et équipement pour des sous-porteuses WO2010075731A1 (fr)

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CN200910000038.8A CN101772148B (zh) 2009-01-05 2009-01-05 辅同步信道的配置方法和装置、子载波映射方法和装置
CN200910000038.8 2009-01-05

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WO2019031552A1 (fr) * 2017-08-08 2019-02-14 シャープ株式会社 Dispositif de station de base et procédé de communication

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CN104429032A (zh) * 2013-01-28 2015-03-18 华为技术有限公司 信息传输方法、用户设备和基站
US9603030B2 (en) 2014-03-13 2017-03-21 Emprie Technology Development LLC Cell ID allocation in a heterogeneous network
EP3026967A1 (fr) * 2014-08-19 2016-06-01 Huawei Technologies Co., Ltd. Dispositif d'émission de signal de synchronisation, dispositif de réception, procédé et système
CN106160969B (zh) * 2015-04-01 2019-04-16 南京扬舟信息科技有限公司 一种lte下行同步数据发射配置与接收方法
WO2017128048A1 (fr) 2016-01-26 2017-08-03 华为技术有限公司 Procédé de notification, appareil de notification et système
CN110708266A (zh) * 2018-07-09 2020-01-17 普天信息技术有限公司 无线网络同步方法及装置

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WO2019031552A1 (fr) * 2017-08-08 2019-02-14 シャープ株式会社 Dispositif de station de base et procédé de communication

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CN101772148A (zh) 2010-07-07

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