WO2018095068A1 - 一种同步接入信号组的传输方法、设备和系统 - Google Patents

一种同步接入信号组的传输方法、设备和系统 Download PDF

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Publication number
WO2018095068A1
WO2018095068A1 PCT/CN2017/095443 CN2017095443W WO2018095068A1 WO 2018095068 A1 WO2018095068 A1 WO 2018095068A1 CN 2017095443 W CN2017095443 W CN 2017095443W WO 2018095068 A1 WO2018095068 A1 WO 2018095068A1
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Prior art keywords
sequence number
frequency domain
resource block
access signal
band
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English (en)
French (fr)
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李建军
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • 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
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a method, device, and system for transmitting a synchronous access signal group.
  • the millimeter wave band (6-100 GHz) has attracted much attention due to its rich spectrum resources and wide transmission bandwidth, and has become an indispensable technology for future communication system (for example, 5G) standards.
  • 5G future communication system
  • one of the outstanding shortcomings of the millimeter wave technology is that the path loss is very large, and as the frequency is higher, the path loss is larger, which results in a narrow coverage area of the narrow beam in the millimeter wave band.
  • the base station repeatedly transmits the same initial access signal by using different beams at different times, and different beams cover different areas, thereby implementing a broadcast function, and although the coverage is expanded, the signal is extended.
  • the time of transmission thus extending the initial access time of the user terminal.
  • the embodiments of the present disclosure provide a method, device, and system for transmitting a synchronization access signal group, so as to solve the problem that the user terminal initially accesses for a long time.
  • an embodiment of the present disclosure provides a method for transmitting a synchronization access signal group, including: generating a synchronization access signal group corresponding to multiple frequency domain resources, where the synchronization access signal group includes a primary synchronization signal (PSS) a Primary Synchronization Signal (SSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH) signal, the PBCH signal including a Master Information Block (MIB); using different beams, Synchronous access signal groups corresponding to the frequency domain resources are respectively sent on different frequency domain resources.
  • PSS primary synchronization signal
  • SSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • MIB Master Information Block
  • an embodiment of the present disclosure provides a method for transmitting a synchronization access signal group, including: searching for a PSS on multiple frequency domain resources; and searching for a PSS, searching on a frequency domain resource corresponding to the PSS
  • the SSS and PBCH signals are demodulated to obtain the MIB.
  • an embodiment of the present disclosure provides a network side device, including: a generating module, configured to generate a synchronization access signal group corresponding to multiple frequency domain resources, where the synchronization access signal group includes a PSS, an SSS, and a PBCH. a signal, the PBCH signal includes a primary information block MIB, and a sending module, configured to send a synchronous access signal group corresponding to the frequency domain resource on different frequency domain resources by using different beams.
  • an embodiment of the present disclosure provides a user terminal, including: a first search module, configured to search for a PSS on multiple frequency domain resources; and a second search module, configured to: after searching for a PSS, in the PSS Searching for SSS and PBCH signals on the corresponding frequency domain resources, demodulating the PBCH signals to obtain MIBs.
  • an embodiment of the present disclosure provides a transmission system for a synchronous access signal group, including the network side device and the user terminal.
  • an embodiment of the present disclosure provides a network side device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the computer program
  • the steps of the method of transmitting a synchronous access signal group as described in the first aspect are achieved.
  • an embodiment of the present disclosure provides a user terminal, including: a memory, a processor, and a computer program stored on the memory and operable on the processor, when the processor executes the computer program The step of implementing the method of transmitting a synchronous access signal group as described in the second aspect.
  • an embodiment of the present disclosure provides a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, implements synchronous access as described in the first aspect. The steps of the transmission method of the signal group.
  • an embodiment of the present disclosure provides a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by a processor, implementing synchronous access as described in the second aspect The steps of the transmission method of the signal group.
  • a synchronization access signal group corresponding to multiple frequency domain resources is generated, and different synchronization beams are used to transmit synchronization access signal groups corresponding to the frequency domain resources on different frequency domain resources.
  • Related technology can expand the coverage of the synchronous access signal group, and reduce the signal delay Time.
  • FIG. 1 is a structural diagram of a transmission system of a synchronous access signal group to which an embodiment of the present disclosure is applicable;
  • FIG. 2 is a flowchart of a method for transmitting a synchronization access signal group according to some embodiments of the present disclosure
  • FIG. 3 is a flowchart of a method for transmitting a synchronization access signal group according to some embodiments of the present disclosure
  • FIG. 4 is a schematic diagram of a synchronous access signal group transmission provided by some embodiments of the present disclosure.
  • FIG. 5 is a flowchart of another method for sending a synchronization access signal group according to some embodiments of the present disclosure
  • FIG. 6 is a flowchart of a method for transmitting a synchronization access signal group according to some embodiments of the present disclosure
  • FIG. 7 is a structural diagram of a network side device according to some embodiments of the present disclosure.
  • FIG. 8 is a structural diagram of a user terminal according to some embodiments of the present disclosure.
  • FIG. 9 is a structural diagram of a user terminal according to some embodiments of the present disclosure.
  • FIG. 10 is a structural diagram of a user terminal according to some embodiments of the present disclosure.
  • FIG. 11 is a structural diagram of a network side device according to some embodiments of the present disclosure.
  • FIG. 12 is a structural diagram of a user terminal according to some embodiments of the present disclosure.
  • FIG. 1 is a structural diagram of a transmission system of a synchronous access signal group, which is applicable to an embodiment of the present disclosure.
  • the user terminal 11 and the network side device 12 are included.
  • It is UE (User Equipment), for example: it can be a mobile phone or a tablet (Tablet) Terminal computer devices such as Personal Computer, Laptop Computer, Personal Digital Assistant (PDA), Mobile Internet Device (MID) or Wearable Device, etc.
  • PDA Personal Digital Assistant
  • MID Mobile Internet Device
  • Wearable Device etc.
  • the specific type of the user terminal 11 is not limited in the embodiment of the present disclosure.
  • the user terminal 11 can establish communication with the network side device 12, wherein the network in the figure can indicate that the user terminal 11 and the network side device 12 establish wireless communication, and the network side device 12 can be a Transmission Reception Point (TRP). Or it may be a base station, and the base station may be a macro station, such as an LTE eNB, a 5G NR NB, or the like. Or the network side device 12 may be an access point (AP). It should be noted that the specific types of the network side device 12 are not limited in the embodiment of the present disclosure. The specific functions of the user terminal 11 and the network side device 12 will be specifically described by using the following embodiments.
  • TRP Transmission Reception Point
  • AP access point
  • FIG. 2 is a flowchart of a method for sending a synchronous access signal group according to an embodiment of the present disclosure.
  • the method includes the following steps:
  • Step 201 Generate a synchronization access signal group corresponding to multiple frequency domain resources, where the synchronization access signal group includes PSS, SSS, and PBCH signals, and the PBCH signal includes an MIB.
  • step 201 may generate a corresponding synchronization access signal group for each frequency domain resource, and the content of different access signal groups is different, for example, the MIBs in different access signal groups are different.
  • the synchronous access signal group can be defined as the most basic set of signals provided by the network side device required by the user terminal for network search.
  • the frequency domain resource may be a sub-band, for example, a resource block group, such as a resource block group in a millimeter wave band or a high frequency band; or the frequency domain resource may be a sub-carrier.
  • Step 202 Send a synchronization access signal group corresponding to the frequency domain resource on different frequency domain resources by using different beams.
  • the synchronization access signal group corresponding to the frequency domain resource may be sent on different frequency domain resources by using different beams, and the synchronization access signal group may be sent by using different beams on different frequency domain resources. And each frequency domain resource only sends the synchronous access signal group corresponding to the frequency domain resource.
  • the step 201 Including the frequency domain resources with the sequence numbers 1, 2, 3, 4, and 5, the step 201 generates the access synchronization signal group with the sequence numbers 1, 2, 3, 4, and 5 respectively, and the network side device includes the sequence number 1 respectively.
  • step 202 may be to use the beam 1 to transmit the access synchronization signal group 1 on the carrier frequency resource 1, and to use the beam 2 to transmit the access synchronization signal group 2 on the frequency domain resource 2,
  • the above steps can be used to transmit the access synchronization signal group by using different beams on different frequency domain resources.
  • the coverage of different beams or the coverage direction is different, so that beam scanning is implemented to expand the coverage of the cell, so as to improve the transmission access.
  • the beam used in the embodiment of the present disclosure may be a narrow beam of a millimeter wave band.
  • the embodiment of the present disclosure can be applied to a multi-input multiple-output (MIMO) system, and can also be applied to a millimeter wave in a Global System for Mobile Communication (GSM) system.
  • MIMO multi-input multiple-output
  • GSM Global System for Mobile Communication
  • the scenario of band application and can also be applied to the scenario where the code division multiple access (CDMA) technology is applied in the millimeter wave band.
  • CDMA code division multiple access
  • the above method can be applied to the network side device in the network structure shown in FIG. 1.
  • a synchronization access signal group corresponding to multiple frequency domain resources is generated, where the synchronization access signal group includes PSS, SSS, and PBCH signals, and the PBCH signal includes an MIB; using different beams, respectively A synchronization access signal group corresponding to the frequency domain resource is sent on different frequency domain resources.
  • the synchronous access signal group is transmitted in multiple frequency domain resources through different beams.
  • a certain narrow beam is used to transmit the synchronous access signal group, and the embodiment of the present disclosure can reduce the signal delay of the synchronous access signal group. Shorten the initial access time of the user terminal.
  • FIG. 3 is a flowchart of another method for sending a synchronous access signal group according to an embodiment of the present disclosure.
  • the method includes the following steps:
  • Step 301 Generate a synchronization access signal group corresponding to multiple sub-bands, where the synchronization access signal group includes a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH signal, where the PBCH signal includes a primary information block MIB.
  • the synchronization access signal group includes a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH signal, where the PBCH signal includes a primary information block MIB.
  • Each sub-band includes multiple resource blocks.
  • the frequency domain resource is defined as a sub-band, for example, a millimeter wave band or a sub-band in a high frequency band.
  • the first sub-band may include n resource blocks (RBs, resource blocks), for example, 2, 4, 6, 7, or 8 resource blocks, which are not limited in this embodiment, and the priority is 6 RBs.
  • RBs resource blocks
  • the entire system frequency band may be divided into different RBs, and each RB has 12 subcarriers.
  • the sub-band may also be referred to as a resource block group.
  • the MIB in each synchronization access signal group may be a sub-band Corresponding, that is, different sub-bands have different system information.
  • Step 302 Send a synchronization access signal group corresponding to the sub-band on different sub-bands by using different beams.
  • step 302 different sub-bands are used to transmit the synchronization access signal of the sub-band, so that the coverage of the cell can be improved.
  • the using different beams respectively, sending the synchronization access signal group corresponding to the sub-band on different sub-bands, including: using beams in different directions, respectively transmitting the sub-bands on the sub-bands Synchronous access signal group corresponding to the frequency band.
  • the network side device can transmit the synchronous access signal group by using beams in different directions on different sub-bands.
  • the synchronous access signal group is transmitted by using the same direction beam or the same beam.
  • beam scanning is implemented using different sub-bands, wherein the black beam in FIG. 4 represents the beam used in each sub-band.
  • the step of transmitting the synchronization access signal group corresponding to the frequency domain resource on different frequency domain resources by using different beams may also include: using beams in different directions, Synchronous access signal groups corresponding to the frequency domain resources are respectively sent on different frequency domain resources.
  • the related description in the second embodiment which is not described herein, and the same beneficial effects can be achieved.
  • each sub-band transmitting the access synchronization signal group may simultaneously transmit the respective synchronization access signal group. This can reduce the delay effect.
  • the order of transmitting the synchronization access signal group may be performed according to the SSS, PSS, and PBCH signals, for example, as shown in FIG.
  • the white portion of Figure 4 is either a control channel or other data channel.
  • the MIB includes frequency domain location information, where the frequency domain location information corresponds to a sub-band of a synchronization access signal group in which the MIB is sent.
  • the frequency domain location of each of the synchronized access signal groups through each MIB can be implemented.
  • the frequency domain location information includes: a sequence number of a resource block with the lowest or highest sequence number in the sub-band; or a sequence number of the resource block with the serial number in the sub-band; or, in the sub-band The difference between the sequence number of the resource block with the lowest sequence number and the reference resource block; or the difference between the sequence number of the resource block with the highest sequence number in the sub-band and the reference resource block; or the resource block and reference resource with the serial number in the sub-band The difference in the number of the block.
  • the frequency domain location of the corresponding sub-band can be determined when the user terminal receives the frequency domain location information.
  • the reference resource block includes: a resource block with the lowest sequence number in the system frequency band, a resource block with the highest sequence number in the system frequency band, or a resource block located in the middle of the system frequency band.
  • the signaling overhead can be reduced.
  • the MIB may further include at least one of the following: downlink bandwidth information, Physical Hybrid ARQ Indicator Channel (PHICH) configuration information, and system frame number information.
  • PHICH Physical Hybrid ARQ Indicator Channel
  • the MIB of each synchronous access signal group may include at least one of the foregoing three contents, but different synchronization access signal groups correspond to different sub-bands, thereby different synchronizations.
  • the MIB content of the access signal group is different.
  • the downlink bandwidth information is used to indicate the downlink bandwidth of the resource block corresponding to the synchronization access signal group
  • the PHICH configuration information is used to indicate the PHICH configuration of the resource block corresponding to the synchronization access signal group
  • the system frame number information is used to indicate the The system frame number of the resource block corresponding to the synchronization access signal group
  • the frequency domain location information is used to indicate the frequency domain location of the resource block corresponding to the synchronization access signal group.
  • the step 302 includes: using different beams, respectively, sending synchronization access signal groups corresponding to the frequency domain resources on different frequency domain resources according to different transmission times.
  • synchronization access signals for transmitting sub-bands at different times in different sub-bands can be implemented, thereby avoiding a high peak-to-average power ratio (PAPR) caused by repeated transmission of the synchronization access signal in the same OFDM symbol. Peak to Average Power Ratio).
  • PAPR peak-to-average power ratio
  • the starting time of sending the synchronous access signal group in different sub-bands may be different. For example, as shown in FIG. 5, each resource block group sends the synchronous access signal group in the order of SSS, PSS, and PBCH signals. But the time SSS sends is different.
  • the MIB includes time information, where the time information corresponds to a sending time of the synchronous access signal group in which the MIB is sent.
  • the time of each synchronization access signal group can be determined by the time information included in the MIB of each synchronization access signal group, so that the user terminal can implement accurate time synchronization based on the time information.
  • the time information includes: a sequence number of the OFDM symbol in the subframe in which the PSS included in the synchronization access signal group is located; or an OFDM symbol in which the SSS included in the synchronization access signal group is in a subframe.
  • the time information of each synchronization access signal group includes the time information, but the time information of different synchronization access signal groups is different, for example, the frame number of the OFDM symbol of the PSS is different, and the SSS is different.
  • the frame numbers of the OFDM symbols are different, and the frame numbers of the first OFDM symbols of the PBCH signal are also different.
  • accurate time synchronization of the terminal can be achieved by using the time information described above.
  • the user terminal may first determine the bandwidth of the entire frequency band according to the downlink bandwidth information, and then use the frequency domain location information to determine the location of the synchronous access signal group in the entire frequency band, thereby knowing the specific information of the entire frequency band.
  • time synchronization the user terminal first implements frame synchronization according to system frame number information, and then uses the transmission time information of the synchronization access signal group to determine the sequence number of the OFDM symbol of the synchronization access signal group number in the subframe, thereby Achieve precise time synchronization.
  • the MIB may further include at least one of the following: downlink bandwidth information, physical hybrid retransmission indication channel configuration information, system frame number information, and frequency domain location information.
  • the physical hybrid retransmission indication channel configuration information For the description of the downlink bandwidth information, the physical hybrid retransmission indication channel configuration information, the system frame number information, and the frequency domain location information, refer to the foregoing implementation manner, and details are not described herein.
  • the foregoing system information may be as shown in Table 2:
  • a synchronization access signal group corresponding to multiple sub-bands is generated, where the synchronization access signal group includes PSS, SSS, and PBCH signals, and the PBCH signal includes an MIB, where each sub-band includes multiple resources.
  • the synchronous access signal groups corresponding to the frequency domain resources are respectively sent on different frequency domain resources according to different transmission times, so that the same information can be repeatedly transmitted in the same OFDM symbol.
  • the resulting high PAPR problem is a high PAPR problem.
  • the user terminal can obtain specific information of the entire frequency band.
  • the frequency domain location information in the MIB By carrying the frequency domain location information in the MIB, the user terminal can accurately implement time synchronization.
  • FIG. 6 is a flowchart of another method for transmitting a synchronization access signal group according to an embodiment of the present disclosure.
  • the method includes the following steps:
  • Step 601 Search for PSS on multiple frequency domain resources.
  • step 601 the user terminal searches for PSS in multiple frequency domain resources during initial access. Once the PSS search is successful, the beam on the searched successful frequency domain resource is aligned with itself.
  • the PSS may be sent by the network side device in the first embodiment and the second embodiment. Synchronize the PSS included in the signal group.
  • Step 602 After searching for the PSS, search for SSS and the frequency domain resources corresponding to the PSS.
  • the PBCH signal demodulates the PBCH signal to obtain an MIB.
  • the user terminal may determine corresponding frequency domain resources to search for SSS and PBCH signals belonging to the same synchronization access signal group, thereby obtaining the MIB included in the PBCH signal. After obtaining the MIB, the user terminal may perform some corresponding operations, for example, determining the frequency domain location of the frequency domain resource corresponding to the synchronous access signal group, or performing frame synchronization, time synchronization, and the like.
  • the frequency domain resource is a sub-band, and each sub-band includes multiple resource blocks.
  • the MIB includes frequency domain location information, where the frequency domain location information corresponds to a sub-band that sends the synchronization access signal group where the MIB is located; and the demodulating the PBCH signal to obtain the MIB.
  • the method further includes: obtaining frequency domain location information from the MIB, and determining, according to the frequency domain location information, a sub-band that sends the synchronization access signal group where the MIB is located.
  • the user terminal may determine the frequency domain location of the corresponding synchronization access signal group after receiving the frequency domain location information. Further, if the system frame number information is further included in the MIB, the user terminal may perform frame synchronization according to the system frame number information, thereby facilitating the user terminal to access the network.
  • the frequency domain location information includes: a sequence number of a resource block with the lowest or highest sequence number in the sub-band; or a sequence number of the resource block with the serial number in the sub-band; or, in the sub-band The difference between the sequence number of the resource block with the lowest sequence number and the reference resource block; or the difference between the sequence number of the resource block with the highest sequence number in the sub-band and the reference resource block; or the resource block and reference resource with the serial number in the sub-band The difference in the number of the block.
  • the reference resource block includes: a resource block with the lowest sequence number in the system frequency band, a resource block with the highest sequence number in the system frequency band, or a resource block located in the middle of the system frequency band.
  • the MIB includes time information, where the time information corresponds to a sending time of the synchronization access signal group in which the MIB is sent.
  • the method further includes: Time information is obtained from the MIB, and frame synchronization is performed according to the time information.
  • the network side device may use different beams to send synchronous access signal groups corresponding to the frequency domain resources on different frequency domain resources according to different transmission times.
  • the time information refer to the corresponding description of the second embodiment, which is not described herein, and the same beneficial effects can be achieved.
  • the user terminal may perform time synchronization according to the sending time information of the synchronous access signal group, so as to achieve an accurate time synchronization effect, thereby facilitating user terminal access.
  • the internet The internet.
  • the time information includes: a sequence number of the OFDM symbol in the subframe in which the PSS included in the synchronization access signal group is located; or an OFDM symbol in which the SSS included in the synchronization access signal group is in a subframe.
  • the PSS is searched on the multiple frequency domain resources; after the PSS is searched, the SSS and PBCH signals are searched on the frequency domain resources corresponding to the PSS, and the PBCH signal is demodulated to obtain the MIB, and Compared with the related technology, the complexity of the initial access of the user terminal is reduced, and the initial access time of the user terminal is shortened.
  • the user terminal can obtain specific information of the entire frequency band; Carrying frequency domain location information in the MIB enables the user terminal to accurately implement time synchronization.
  • FIG. 7 is a structural diagram of a network side device provided by an implementation of the present disclosure, which can implement details of a method for transmitting a synchronization access signal group in the first to third embodiments, and achieve the same effect.
  • FIG. 7 is a structural diagram of a network side device provided by an implementation of the present disclosure, which can implement details of a method for transmitting a synchronization access signal group in the first to third embodiments, and achieve the same effect.
  • FIG. 7 is a structural diagram of a network side device provided by an implementation of the present disclosure, which can implement details of a method for transmitting a synchronization access signal group in the first to third embodiments, and achieve the same effect.
  • the network side device 700 includes: a generating module 701 and a sending module 702, where: a generating module 701, configured to generate a synchronization access signal group corresponding to multiple frequency domain resources, where The synchronous access signal group includes PSS, SSS, and PBCH signals, the PBCH The signal includes a main information block MIB, and the sending module 702 is configured to send a synchronization access signal group corresponding to the frequency domain resource on different frequency domain resources by using different beams.
  • a generating module 701 configured to generate a synchronization access signal group corresponding to multiple frequency domain resources, where The synchronous access signal group includes PSS, SSS, and PBCH signals, the PBCH The signal includes a main information block MIB
  • the sending module 702 is configured to send a synchronization access signal group corresponding to the frequency domain resource on different frequency domain resources by using different beams.
  • the sending module 702 is configured to use the beams in different directions to respectively send the synchronization access signal group corresponding to the frequency domain resource on different frequency domain resources.
  • the frequency domain resource is a sub-band, and each sub-band includes multiple resource blocks.
  • the MIB includes frequency domain location information, where the frequency domain location information corresponds to a sub-band of a synchronization access signal group in which the MIB is sent.
  • the frequency domain location information includes: a sequence number of a resource block with the lowest or highest sequence number in the sub-band; or a sequence number of the resource block with the serial number in the sub-band; or, in the sub-band The difference between the sequence number of the resource block with the lowest sequence number and the reference resource block; or the difference between the sequence number of the resource block with the highest sequence number in the sub-band and the reference resource block; or the resource block and reference resource with the serial number in the sub-band The difference in the number of the block.
  • the reference resource block includes: a resource block with the lowest sequence number in the system frequency band, a resource block with the highest sequence number in the system frequency band, or a resource block located in the middle of the system frequency band.
  • the sending module 702 is configured to use different beams to send synchronous access signal groups corresponding to the frequency domain resources on different frequency domain resources according to different sending times.
  • the MIB includes time information, where the time information corresponds to a sending time of the synchronous access signal group in which the MIB is sent.
  • the time information includes: a sequence number of the OFDM symbol in the subframe in which the PSS included in the synchronization access signal group is located; or an OFDM symbol in which the SSS included in the synchronization access signal group is in a subframe.
  • a synchronization access signal group corresponding to multiple sub-bands is generated, where the synchronization access signal group includes PSS, SSS, and PBCH signals, and the PBCH signal includes an MIB, where each sub-band Include multiple resource blocks; use different beams to respectively transmit synchronous access signal groups corresponding to the sub-bands on different sub-bands.
  • the user terminal can obtain specific information of the entire frequency band.
  • the frequency domain location information in the MIB By carrying the frequency domain location information in the MIB, the user terminal can accurately implement time synchronization.
  • FIG. 8 is a structural diagram of a user terminal provided by an implementation of the present disclosure, which can implement the details of the synchronization method in the fourth embodiment, and achieve the same effect.
  • the user terminal 800 includes: a first search module 801 and a second search module 802, wherein: a first search module 801, configured to search for PSS on multiple frequency domain resources;
  • the second search module 802 is configured to search for SSS and PBCH signals on the frequency domain resources corresponding to the PSS after the PSS is searched, and demodulate the PBCH signal to obtain a main information block MIB.
  • the frequency domain resource is a sub-band, and each sub-band includes multiple resource blocks.
  • the MIB includes frequency domain location information, where the frequency domain location information corresponds to a sub-band of a synchronization access signal group in which the MIB is sent.
  • the user terminal 800 further includes: a determining module 803, configured to acquire frequency domain location information from the MIB, and determine, according to the frequency domain location information, a synchronization access signal group in which the MIB is sent. Sub-band.
  • the frequency domain location information includes: a sequence number of a resource block with the lowest or highest sequence number in the sub-band; or a sequence number of the resource block with the serial number in the sub-band; or, in the sub-band The difference between the sequence number of the resource block with the lowest sequence number and the reference resource block; or the difference between the sequence number of the resource block with the highest sequence number in the sub-band and the reference resource block; or the resource block and reference resource with the serial number in the sub-band The difference in the number of the block.
  • the reference resource block includes: a resource block with the lowest sequence number in the system frequency band, a resource block with the highest sequence number in the system frequency band, or a resource block located in the middle of the system frequency band.
  • the MIB includes time information, where the time information corresponds to a sending time of the synchronous access signal group in which the MIB is sent.
  • the user terminal 800 further includes: a synchronization module 804. Obtaining time information from the MIB, and performing frame synchronization according to the time information.
  • the time information includes: where the PSS included in the synchronous access signal group is located The sequence number of the OFDM symbol in the subframe; or the sequence number of the OFDM symbol in the subframe in which the SSS of the synchronization access signal group is located; or the first OFDM of the PBCH signal included in the synchronization access signal group The sequence number of the symbol in the subframe.
  • the PSS is searched on the plurality of frequency domain resources; after the PSS is searched, the SSS and PBCH signals are searched on the frequency domain resources corresponding to the PSS, and the PBCH signal is demodulated.
  • the MIB reduces the complexity of the initial access of the user terminal and shortens the initial access time of the user terminal.
  • the frequency domain location information in the MIB the user terminal can obtain the specific frequency of the entire frequency band. Information; by carrying frequency domain location information in the MIB, the user terminal can be accurately synchronized with time.
  • FIG. 11 is a structural diagram of a network side device according to an embodiment of the present disclosure, which can implement details of a method for transmitting a synchronous access signal group according to the first embodiment to the third embodiment, and achieve the same effect.
  • the network side device 1100 includes a processor 1101, a transceiver 1102, a memory 1103, a user interface 1104, and a bus interface.
  • the processor 1101 is configured to read a program in the memory 1103 and perform the following process.
  • the transceiver 1102 is configured to receive and transmit data under the control of the processor 1101.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1101 and various circuits of memory represented by memory 1103.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver 1102 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1104 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 can store data used by the processor 1101 when performing operations.
  • the different beams are used to be sent to the frequency domain on different frequency domain resources.
  • the synchronous access signal group corresponding to the resource includes: using beams in different directions, and respectively transmitting synchronous access signal groups corresponding to the frequency domain resources on different frequency domain resources.
  • the frequency domain resource is a sub-band, and each sub-band includes multiple resource blocks.
  • the MIB includes frequency domain location information, and the frequency domain location information corresponds to a sub-band of a synchronization access signal group in which the MIB is transmitted.
  • the frequency domain location information includes: a sequence number of a resource block with the lowest or highest sequence number in the sub-band; or a sequence number of the resource block with the serial number in the sub-band; or, in the sub-band The difference between the sequence number of the resource block with the lowest sequence number and the reference resource block; or the difference between the sequence number of the resource block with the highest sequence number in the sub-band and the reference resource block; or the resource block and reference resource with the serial number in the sub-band The difference in the number of the block.
  • the reference resource block includes: a resource block with the lowest sequence number in the system frequency band, a resource block with the highest sequence number in the system frequency band, or a resource block located in the middle of the system frequency band.
  • the different beams are used to send synchronization access signal groups corresponding to the frequency domain resources on different frequency domain resources, including: using different beams, and different transmission times according to different transmission times.
  • a synchronization access signal group corresponding to the frequency domain resource is sent on the frequency domain resource.
  • the MIB includes time information, where the time information corresponds to a sending time of the synchronous access signal group in which the MIB is sent.
  • the time information includes: a sequence number of the OFDM symbol in the subframe in which the PSS included in the synchronization access signal group is located; or an OFDM symbol in which the SSS included in the synchronization access signal group is in a subframe.
  • a synchronization access signal group corresponding to multiple sub-bands is generated, where the synchronization access signal group includes PSS, SSS, and PBCH signals, and the PBCH signal includes an MIB, where each sub-band Include multiple resource blocks; use different beams to respectively transmit synchronous access signal groups corresponding to the sub-bands on different sub-bands.
  • the synchronous access signal groups corresponding to the frequency domain resources are respectively sent on different frequency domain resources according to different transmission times, so that the same information can be avoided.
  • the user terminal can obtain specific information of the entire frequency band.
  • the frequency domain location information in the MIB By carrying the frequency domain location information in the MIB, the user terminal can accurately implement time synchronization.
  • FIG. 12 is a structural diagram of a user terminal to which the embodiment of the present disclosure is applied, which can implement the details of the system information block transmission method in the first embodiment to the second embodiment, and achieve the same effect.
  • the user terminal 1200 includes at least one processor 1201, a memory 1202, at least one network interface 1204, and a user interface 1203.
  • the various components in user terminal 1200 are coupled together by bus system 1205.
  • bus system 1205 is used to implement connection communication between these components.
  • the bus system 1205 includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • various buses are labeled as bus system 1205 in FIG.
  • the user interface 1203 may include a display, a keyboard, or a pointing device (eg, a mouse, a track ball, a touch pad, or a touch screen, etc.).
  • a pointing device eg, a mouse, a track ball, a touch pad, or a touch screen, etc.
  • the memory 1202 in the embodiments of the present disclosure may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SDRAM Synchronous Connection Dynamic Random Access Memory
  • DRRAM direct memory bus random access memory
  • the memory 1202 stores elements, executable modules or data structures, or a subset thereof, or their extended set: an operating system 12021 and an application 12022.
  • the operating system 12021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks.
  • the application 12022 includes various applications, such as a media player (Media Player), a browser (Browser), etc., for implementing various application services.
  • a program implementing the method of the embodiments of the present disclosure may be included in the application 12022.
  • the processor 1201 by calling the program or instruction stored in the memory 1202, specifically, the program or instruction stored in the application 12022, the processor 1201 is configured to: search for PSS on multiple frequency domain resources; After the PSS, the SSS and PBCH signals are searched for the frequency domain resources corresponding to the PSS, and the PBCH signal is demodulated to obtain the MIB.
  • the method disclosed in the above embodiments of the present disclosure may be applied to the processor 1201 or implemented by the processor 1201.
  • the processor 1201 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1201 or an instruction in a form of software.
  • the processor 1201 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present disclosure may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in connection with the embodiments of the present disclosure may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 1202, and the processor 1201 reads the information in the memory 1202 and completes the steps of the above method in combination with its hardware.
  • the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), digital signal processing Digital Signal Processing (DSP), Digital Signal Processing Equipment (DSP Device, DSPD), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), General Purpose Processor , a controller, a microcontroller, a microprocessor, other electronic units for performing the functions described herein, or a combination thereof.
  • ASICs Application Specific Integrated Circuits
  • DSP Digital Signal Processing
  • DSP Device Digital Signal Processing Equipment
  • PLD Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • General Purpose Processor a controller, a microcontroller, a microprocessor, other electronic units for performing the functions described herein, or a combination thereof.
  • the techniques described herein can be implemented by modules (eg, procedures, functions, and so on) that perform the functions described herein.
  • the software code can be stored in memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • the frequency domain resource is a sub-band, and each sub-band includes multiple resource blocks.
  • the MIB includes frequency domain location information, where the frequency domain location information corresponds to a sub-band that sends the synchronization access signal group where the MIB is located; and the demodulating the PBCH signal to obtain the MIB.
  • the processor 1201 is further configured to: obtain frequency domain location information from the MIB, and determine, according to the frequency domain location information, a sub-band that sends the synchronization access signal group where the MIB is located.
  • the frequency domain location information includes: a sequence number of a resource block with the lowest or highest sequence number in the sub-band; or a sequence number of the resource block with the serial number in the sub-band; or, in the sub-band The difference between the sequence number of the resource block with the lowest sequence number and the reference resource block; or the difference between the sequence number of the resource block with the highest sequence number in the sub-band and the reference resource block; or the resource block and reference resource with the serial number in the sub-band The difference in the number of the block.
  • the reference resource block includes: a resource block with the lowest sequence number in the system frequency band, a resource block with the highest sequence number in the system frequency band, or a resource block located in the middle of the system frequency band.
  • the MIB includes time information, where the time information corresponds to a sending time of the synchronous access signal group in which the MIB is sent; after demodulating the PBCH signal to obtain an MIB, the processor 1201 The method is further configured to: obtain time information from the MIB, and perform frame synchronization according to the time information.
  • the time information includes: a sequence number of the OFDM symbol in the subframe in which the PSS included in the synchronization access signal group is located; or an OFDM symbol in which the SSS included in the synchronization access signal group is in a subframe.
  • the user terminal of the embodiment of the present disclosure searching for PSS on multiple frequency domain resources; after searching for PSS, searching for SSS and PBCH signals on the frequency domain resource corresponding to the PSS, for the PBCH letter
  • the number of demodulation is reduced, and the complexity of the initial access of the user terminal is reduced, and the initial access time of the user terminal is shortened.
  • the user terminal can be enabled. Obtain specific information of the entire frequency band; by carrying frequency domain location information in the MIB, the user terminal can accurately implement time synchronization.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, 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 objectives of the embodiments of the present disclosure.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present disclosure may contribute to the related art in essence or part of the technical solution. Illustrated in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the various embodiments of the present disclosure. All or part of the steps of the method.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本公开实施例提供一种同步接入信号组的传输方法、设备和系统，该方法包括：生成与多个频域资源对应的同步接入信号组，所述同步接入信号组包括主同步信号PSS、次同步信号SSS和物理广播信道PBCH信号，所述PBCH信号包括主信息块MIB；使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。

Description

一种同步接入信号组的传输方法、设备和系统
相关申请的交叉引用
本申请主张在2016年11月25日在中国提交的中国专利申请号No.201611055853.0的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种同步接入信号组的传输方法、设备和系统。
背景技术
目前毫米波波段(6-100GHz)因其频谱资源丰富和传输带宽宽的优点而备受关注，已经成为未来通信系统(例如：5G)标准的必备技术。然而，毫米波技术的一个突出缺点是路径损耗非常大，而且，随着频率越高，路径损耗越大，这样就导致毫米波波段的窄波束的覆盖区域很小。
现有的通信系统中，基站将相同的初始接入信号在不同的时间利用不同的波束进行重复发送，不同的波束覆盖不同的区域，从而实现广播功能，虽然扩大了覆盖范围，但延长了信号发送的时间，从而延长了用户终端初始接入的时间。
发明内容
本公开实施例提供一种同步接入信号组的传输方法、设备和系统，以解决用户终端初始接入的时间较长的问题。
第一方面，本公开实施例提供一种同步接入信号组的传输方法，包括：生成与多个频域资源对应的同步接入信号组，所述同步接入信号组包括主同步信号(PSS，Primary Synchronization Signal)、次同步信号(SSS，Secondary Synchronization Signal)和物理广播信道(PBCH，Physical Broadcast Channel)信号，所述PBCH信号包括主信息块(MIB，Master Information Block)；使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
第二方面，本公开实施例提供一种同步接入信号组的传输方法，包括：在多个频域资源上搜索PSS；当搜索到PSS后，在所述PSS对应的频域资源上搜 索SSS和PBCH信号，对所述PBCH信号解调，得到MIB。
第三方面，本公开实施例提供一种网络侧设备，包括：生成模块，用于生成与多个频域资源对应的同步接入信号组，所述同步接入信号组包括PSS、SSS和PBCH信号，所述PBCH信号包括主信息块MIB；发送模块，用于使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
第四方面，本公开实施例提供一种用户终端，包括：第一搜索模块，用于在多个频域资源上搜索PSS；第二搜索模块，用于当搜索到PSS后，在所述PSS对应的频域资源上搜索SSS和PBCH信号，对所述PBCH信号解调，得到MIB。
第五方面，本公开实施例提供一种同步接入信号组的传输系统，包括所述网络侧设备和所述用户终端。
第六方面，本公开实施例提供一种网络侧设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如第一方面所述的同步接入信号组的传输方法的步骤。
第七方面，本公开实施例提供一种用户终端，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如第二方面所述的同步接入信号组的传输方法的步骤。
第八方面，本公开实施例提供一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如第一方面所述的同步接入信号组的传输方法的步骤。
第九方面，本公开实施例提供一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如第二方面所述的同步接入信号组的传输方法的步骤。
本公开实施例中，生成与多个频域资源对应的同步接入信号组，使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组，相比相关技术，能够扩大同步接入信号组的覆盖范围，且减少了信号延 时。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例描述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公开的一些实施例，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是本公开实施例可应用的一种同步接入信号组的传输系统的结构图；
图2是本公开一些实施例提供的一种同步接入信号组的传输方法的流程图；
图3是本公开一些实施例提供的一种同步接入信号组的传输方法的流程图；
图4是本公开一些实施例提供的一同步接入信号组发送的示意图；
图5是本公开一些实施例提供的另同步接入信号组发送方法的流程图；
图6是本公开一些实施例提供的一种同步接入信号组的传输方法的流程图；
图7是本公开一些实施例提供的网络侧设备的结构图；
图8是本公开一些实施例提供的一种用户终端的结构图；
图9是本公开一些实施例提供的一种用户终端的结构图；
图10是本公开一些实施例提供的一种用户终端的结构图；
图11是本公开一些实施例提供的网络侧设备的结构图；
图12是本公开一些实施例提供的用户终端的结构图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
参见图1，图1为本公开实施例可应用的一种同步接入信号组的传输系统的结构图，如图1所示，包括用户终端11和网络侧设备12，其中，用户终端11可以是UE(User Equipment)，例如：可以是手机、平板电脑(Tablet  Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(personal digital assistant，简称PDA)、移动上网装置(Mobile Internet Device，MID)或可穿戴式设备(Wearable Device)等终端侧设备，需要说明的是，在本公开实施例中并不限定用户终端11的具体类型。用户终端11可以与网络侧设备12建立通信，其中，附图中的网络可以表示用户终端11与网络侧设备12无线建立通信，网络侧设备12可以是传输接收点(TRP，Transmission Reception Point)，或者可以是基站，基站可以是宏站，如LTE eNB、5G NR NB等。或者网络侧设备12可以是接入点(AP，access point)。需要说明的是，在本公开实施例中并不限定网络侧设备12的具体类型，用户终端11和网络侧设备12的具体功能将通过以下多个实施例进行具体描述。
参见图2，图2是本公开实施例提供的一种同步接入信号组发送方法的流程图，在一些实施例中，如图2所示，所述方法包括以下步骤：
步骤201、生成与多个频域资源对应的同步接入信号组，所述同步接入信号组包括PSS、SSS和PBCH信号，所述PBCH信号包括MIB。
本公开实施例中，步骤201可以为每个频域资源生成一个对应的同步接入信号组，且不同接入信号组的内容不同，例如：不同接入信号组中的MIB不同。同步接入信号组可以定义为用户终端进行网络搜索时所需要的由网络侧设备提供的最基本的一组信号。
上述频域资源可以为子频段，例如：资源块组，如毫米波波段或者高频段中的资源块组；或者上述频域资源可以为子载波。
步骤202、使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
在步骤202中，使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组可以是，不同的频域资源上使用不同的波束发送同步接入信号组，且每个频域资源上只发送该频域资源对应的同步接入信号组。包括序号分别为1、2、3、4和5的频域资源，步骤201生成了序号分别为1、2、3、4和5的接入同步信号组，且网络侧设备包括序号分别为1、2、3、4和5波束，从而步骤202就可以是在载频资源1上使用波束1发送接入同步信号组1，在频域资源2上使用波束2发送接入同步信号组2，此处 不作一一列出。
通过上述步骤可以实现在不同的频域资源上使用不同的波束发送接入同步信号组，由于不同波束的覆盖范围或者覆盖方向不同，从而实现波束扫描来扩大小区的覆盖，以达到提高发送接入同步信号组时小区的覆盖范围的效果。
需要说明的是，本公开实施例中使用的波束可以是毫米波波段的窄波束。另外，本公开实施例中可以应用于大规模多输入多输出(MIMO，Multiple-Input Multiple-Out-put)系统，也可以应用于全球移动通信系统(GSM，Global System for Mobile Communication)在毫米波波段应用的场景，以及还可以应用于码分多址(CDMA，Code Division Multiple Access)技术在毫米波波段应用的场景。
上述方法可以应用于图1所示的网络结构中的网络侧设备。
本公开实施例中，生成与多个频域资源对应的同步接入信号组，所述同步接入信号组包括PSS、SSS和PBCH信号，所述PBCH信号包括MIB；使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。这样通过不同的波束在多个频域资源发送同步接入信号组，相比相关技术使用某一窄波束发送同步接入信号组，本公开实施例能够减少同步接入信号组的信号延时，缩短用户终端初始接入的时间。
参见图3，图3是本公开实施例提供的另一种同步接入信号组发送方法的流程图，在一些实施例中，如图3所示，所述方法包括以下步骤：
步骤301、生成与多个子频段对应的同步接入信号组，所述同步接入信号组包括主同步信号PSS、次同步信号SSS和物理广播信道PBCH信号，所述PBCH信号包括主信息块MIB，其中，每个子频段包括多个资源块。
本实施例中，频域资源定义为子频段，例如：毫米波波段或者高频段中的子频段。而第个子频段可以包括n个资源块(RB，resource block)，例如：2、4、6、7或者8个等资源块，对此本实施例不作限定，优先的为6个RB。另外，本公开实施例中，可以将整个系统频段分为不同的RB，每个RB有12个子载波。另外，本公开实施例中，子频段也可以称作资源块组。
另外，本公开实施例中，每个同步接入信号组内的MIB可以是与子频段 对应，即不同的子频段有不同的系统信息。
步骤302、使用不同的波束，分别在不同的子频段上发送与该子频段对应的同步接入信号组。
在步骤302中，不同子频段上使用不同的波束发送该子频段的同步接入信号，从而可以实现提高小区的覆盖范围。
可选的，所述使用不同的波束，分别在不同的子频段上发送与该子频段对应的同步接入信号组，包括：使用不同方向的波束，分别在不同的子频段上发送与该子频段对应的同步接入信号组。
该实施方式中，可以实现网络侧设备在不同的子频段上，用不同方向的波束来发送同步接入信号组。而在同一子频段内，用同一个方向的波束或者同一个波束来发送同步接入信号组。这样就如图4所示，利用不同的子频段实现了波束扫描，其中，图4中黑色波束表示各子频段使用的波束。
需要说明的是，在第一实施例中，使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组的步骤也可以包括：使用不同方向的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。其中，具体说明可以参见第二实施例中相关说明，此处不作赘述，且可以达到相同的有益效果。
另外，本公开实施例中，每个子频段发送接入同步信号组可以同时发送各自的同步接入信号组。这样可以达到减少时延效果。另外，发送同步接入信号组的顺序可以是按照SSS、PSS和PBCH信号进行发送，例如：如图4所示。另外，图4中的白色部分或者控制信道或者其他数据信道。
可选的，所述MIB包含频域位置信息，所述频域位置信息与发送所述MIB所在的同步接入信号组的子频段相对应。
该实施方式中，可以实现通过各MIB各同步接入信号组的频域位置。
可选的，所述频域位置信息，包括：所述子频段内序号最低或者最高的资源块的序号；或者，所述子频段内序号居中的资源块的序号；或者，所述子频段内序号最低的资源块与参考资源块的序号差值；或者，所述子频段内序号最高的资源块与参考资源块的序号差值；或者，所述子频段内序号居中的资源块与参考资源块的序号差值。
该实施方式中，在用户终端接收到上述频域位置信息就可以确定对应子频段的频域位置。
可选的，参考资源块包括：系统频段内序号最低的资源块、系统频段内序号最高的资源块或者位于系统频段中间的资源块。
该实施方式中，由于是通过资源块的序号指示子频段的频域位置，从而可以减少信令开销。
可选的，在该实施方式中，上述MIB还可以包括如下至少一项：下行带宽信息、物理混合重传指示信道(PHICH，Physical Hybrid ARQ Indicator Channel)配置信息和系统帧号信息。
需要说明的是，该实施方式中，是指每个同步接入信号组的MIB可以均包括上述三个内容中的至少一项，只是由于不同同步接入信号组对应不同子频段，从而不同同步接入信号组的MIB内容不同。
其中，下行带宽信息用于指示该同步接入信号组对应的资源块的下行带宽，PHICH配置信息用于指示该同步接入信号组对应的资源块的PHICH配置，系统帧号信息用于指示该同步接入信号组对应的资源块的系统帧号，频域位置信息用于指示该同步接入信号组对应的资源块的频域位置。需要说明的是，由于本公开实施例不同的资源块组有不同的同步接入信号组，从而每个同步接入信号组中的系统信息用于指示对应的资源块的相关信息。例如：每个同步接入信号组内的系统信息可以如表1所示，只是每个系统信息的内容不同，因为不同系统信息会对应不同的资源块组：
表1
信息域(Information field) 比特数(Number of bits)
下行带宽信息(dl-Bandwidth) 3比特(bits)
PHICH配置(phich-Config) 3bits
System Frame Number 8bits
Initial accss RB Position 4～6bits
可选的，步骤302包括：使用不同的波束，按照不同的发送时间，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
该实施方式中，可以实现不同子频段上在不同时间发送各子频段的同步接入信号，从而避免了在同步接入信号在同一个OFDM符号内重复发送引起的高峰值平均功率比(PAPR，Peak to Average Power Ratio)问题。另外，上述 按照不同的发送时间可以是不同子频段发送同步接入信号组的起始时间不同，例如：如图5所示，各资源块组按照SSS、PSS和PBCH信号的顺序发送同步接入信号组，但SSS发送的时间都不同。
可选的，该实施方式中，所述MIB包含时间信息，所述时间信息与发送所述MIB所在的同步接入信号组的发送时间相对应。
通过各同步接入信号组的MIB包括的时间信息，可以确定各同步接入信号组的发送时间，从而用户终端可以基于该时间信息实现精确的时间同步。
可选的，所述时间信息包括：所述同步接入信号组包含的PSS所在的OFDM符号在子帧中的序号；或者，所述同步接入信号组包含的SSS所在的OFDM符号在子帧中的序号；或者，所述同步接入信号组包含的PBCH信号的第一个OFDM符号在子帧中的序号。
同理，该实施方式中，每个同步接入信号组的MIB中均包括上述时间信息，只是不同的同步接入信号组的时间信息不同，例如：PSS的OFDM符号的帧序号不同，SSS的OFDM符号的帧序号不同，且PBCH信号的第一个OFDM符号的帧序号也不同。
需要说明的是，上述PSS所在的OFDM符号在子帧中的序号可以是，PSS所在的OFDM符号在该PSS所属的子帧中的序号；上述SSS所在的OFDM符号在子帧中的序号可以是，SSS所在的OFDM符号在该SSS所属的子帧中的序号；上述这同步接入信号组的PBCH信号的第一个OFDM符号在子帧中的序号可以是，同步接入信号组的PBCH信号的第一个OFDM符号在该PBCH信号所属的子帧中的序号。
该实施方式中，通过上述时间信息可以实现终端的精确时间同步。例如：用户终端可以首先根据下行带宽信息，确定整个频段的带宽，然后利用频域位置信息，确定同步接入信号组在整个频段中的位置，从而知道整个频段的具体信息。而在时间同步方面，用户终端首先根据系统帧号信息，实现帧同步，然后利用同步接入信号组的发送时间信息，可以确定同步接入信号组号的OFDM符号在子帧中的序号，从而实现精确时间同步。
另外，该实施方式中，上述MIB还可以包括如下至少一项：下行带宽信息、物理混合重传指示信道配置信息、系统帧号信息和频域位置信息。
其中，关于下行带宽信息、物理混合重传指示信道配置信息、系统帧号信息、频域位置信息的说明可以参见上面一实施方式，此处不作赘述。例如：该实施方式中，上述系统信息可以如表2所示：
表2
Information feild Number of bits
dl-Bandwidth 3bits
phich-Config 3bits
System Frame Number 8bits
Initial accss RB group Position 4～6bits
时间信息(Initial accss OFDM symbol index) 4bits
本公开实施例中，生成与多个子频段对应的同步接入信号组，所述同步接入信号组包括PSS、SSS和PBCH信号，所述PBCH信号包括MIB，其中，每个子频段包括多个资源块；使用不同的波束，分别在不同的子频段上发送与该子频段对应的同步接入信号组。通过多个子频段，且不同子频段上使用不同的波束发送同步接入信号组，从而可以能够减少同步接入信号组的信号延时，缩短用户终端初始接入的时间。
进一步地，使用不同的波束，按照不同的发送时间，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组，能够避免将相同的信息在同一个OFDM符号内重复发送所引起的高PAPR问题。
此外，通过在MIB中携带频域位置信息，能够使用户终端获取整个频段的具体信息；通过在MIB中携带频域位置信息，能够使用户终端精确地实现时间同步。
参见图6，图6是本公开实施例提供的另一种同步接入信号组的传输方法的流程图。在一些实施例中，如图6所示，所述方法包括以下步骤：
步骤601、在多个频域资源上搜索PSS。
在步骤601中可以是用户终端在初始接入时，在多个频域资源搜索PSS，一旦PSS搜索成功，搜索成功的频域资源上的波束是对准自己的。
其中，关于频域资源和PSS的说明可以参见第一实施例和第二实施例的相关说明，此处不作赘述，且该PSS可以是网络侧设备在第一实施例和第二实施例发送的同步接入信号组中包括的PSS。
步骤602、当搜索到PSS后，在所述PSS对应的频域资源上搜索SSS和 PBCH信号，对所述PBCH信号解调，得到MIB。
用户终端在搜索到上述PSS后，就可以确定对应的频域资源，以搜索属于同一同步接入信号组内的SSS和PBCH信号，进而获得上述PBCH信号包括的MIB。用户终端在获取到上述MIB后，就可以进行一些相应的操作，例如：确定接收到同步接入信号组对应的频域资源的频域位置，或者进行帧同步，或者时间同步等等。
可选的，所述频域资源为子频段，每个子频段包括多个资源块。
其中，关于子频段的相关说明可以参见第一实施例和第二实施例，此处不作赘述，且可以达到相同有益效果。
可选的，所述MIB包含频域位置信息，所述频域位置信息与发送所述MIB所在的同步接入信号组的子频段相对应；所述对所述PBCH信号解调，得到MIB之后，还包括：从所述MIB中获取频域位置信息，根据所述频域位置信息确定发送所述MIB所在的同步接入信号组的子频段。
该实施方式中，用户终端在接收到上述所述频域位置信息就可以确定对应的同步接入信号组的频域位置。进一步的，如果上述MIB中还包括系统帧号信息，用户终端还可以根据上述系统帧号信息进行帧同步，进而有利于用户终端接入网络。
其中，关于频域位置信息的说明可以参见第二实施例中的相应说明，此处不作赘述，且可以达到相同的有益效果。
可选的，所述频域位置信息，包括：所述子频段内序号最低或者最高的资源块的序号；或者，所述子频段内序号居中的资源块的序号；或者，所述子频段内序号最低的资源块与参考资源块的序号差值；或者，所述子频段内序号最高的资源块与参考资源块的序号差值；或者，所述子频段内序号居中的资源块与参考资源块的序号差值。
其中，关于上述频域位置信息的说明可以参见第二实施例中的相应说明，此处不作赘述，且可以达到相同的有益效果。
可选的，所述参考资源块包括：系统频段内序号最低的资源块、系统频段内序号最高的资源块或者位于系统频段中间的资源块。
其中，关于上述参考资源块的说明可以参见第二实施例中的相应说明， 此处不作赘述，且可以达到相同的有益效果。
可选的，所述MIB包含时间信息，所述时间信息与发送所述MIB所在的同步接入信号组的发送时间相对应；所述对所述PBCH信号解调，得到MIB之后，还包括：从所述MIB中获取时间信息，根据所述时间信息进行帧同步。
该实施方式中，网络侧设备可以是使用不同的波束，按照不同的发送时间，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。另外，关于时间信息的说明可以参见第二实施例的相应说明，此处不作赘述，且可以达到相同的有益效果。
且该实施方式中，在用户终端在接收到上述时间信息后，就可以根据所述同步接入信号组的发送时间信息进行时间同步，以达到精确时间同步的效果，进而有利于用户终端接入网络。
可选的，所述时间信息包括：所述同步接入信号组包含的PSS所在的OFDM符号在子帧中的序号；或者，所述同步接入信号组包含的SSS所在的OFDM符号在子帧中的序号；或者，所述同步接入信号组包含的PBCH信号的第一个OFDM符号在子帧中的序号。
其中，关于这里的时间信息的说明可以参见第二实施例的相应说明，此处不作赘述，且可以达到相同的有益效果。
本公开实施例中，在多个频域资源上搜索PSS；当搜索到PSS后，在所述PSS对应的频域资源上搜索SSS和PBCH信号，对所述PBCH信号解调，得到MIB，与相关技术相比，降低了用户终端初始接入的复杂度，缩短了用户终端初始接入的时间；此外，通过在MIB中携带频域位置信息，能够使用户终端获取整个频段的具体信息；通过在MIB中携带频域位置信息，能够使用户终端精确地实现时间同步。
参见图7，图7是本公开实施提供的网络侧设备的结构图，能实现第一实施例至第三实施例中的同步接入信号组的传输方法的细节，并达到相同的效果。在一些实施例中，如图7所示，网络侧设备700包括：生成模块701和发送模块702，其中：生成模块701，用于生成与多个频域资源对应的同步接入信号组，所述同步接入信号组包括PSS、SSS和PBCH信号，所述PBCH 信号包括主信息块MIB；发送模块702，用于使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
可选的，发送模块702用于使用不同方向的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
可选的，所述频域资源为子频段，每个子频段包括多个资源块。
可选的，该实施方式中，所述MIB包含频域位置信息，所述频域位置信息与发送所述MIB所在的同步接入信号组的子频段相对应。
可选的，所述频域位置信息，包括：所述子频段内序号最低或者最高的资源块的序号；或者，所述子频段内序号居中的资源块的序号；或者，所述子频段内序号最低的资源块与参考资源块的序号差值；或者，所述子频段内序号最高的资源块与参考资源块的序号差值；或者，所述子频段内序号居中的资源块与参考资源块的序号差值。
可选的，所述参考资源块包括：系统频段内序号最低的资源块、系统频段内序号最高的资源块或者位于系统频段中间的资源块。
可选的，发送模块702用于使用不同的波束，按照不同的发送时间，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
可选的，该实施方式中，所述MIB包含时间信息，所述时间信息与发送所述MIB所在的同步接入信号组的发送时间相对应。
可选的，所述时间信息包括：所述同步接入信号组包含的PSS所在的OFDM符号在子帧中的序号；或者，所述同步接入信号组包含的SSS所在的OFDM符号在子帧中的序号；或者，所述同步接入信号组包含的PBCH信号的第一个OFDM符号在子帧中的序号。
本公开实施例的网络侧设备中，生成与多个子频段对应的同步接入信号组，所述同步接入信号组包括PSS、SSS和PBCH信号，所述PBCH信号包括MIB，其中，每个子频段包括多个资源块；使用不同的波束，分别在不同的子频段上发送与该子频段对应的同步接入信号组。通过多个子频段，且不同子频段上使用不同的波束发送同步接入信号组，能够减少同步接入信号组的信号延时，缩短用户终端初始接入的时间。
进一步地，使用不同的波束，按照不同的发送时间，分别在不同的频域 资源上发送与该频域资源对应的同步接入信号组，能够避免将相同的信息在同一个OFDM符号内重复发送所引起的高PAPR问题。
此外，通过在MIB中携带频域位置信息，能够使用户终端获取整个频段的具体信息；通过在MIB中携带频域位置信息，能够使用户终端精确地实现时间同步。
参见图8，图8是本公开实施提供的用户终端的结构图，能实现第四个实施例中的同步方法的细节，并达到相同的效果。在一些实施例中，如图8所示，用户终端800包括：第一搜索模块801和第二搜索模块802，其中：第一搜索模块801，用于在多个频域资源上搜索PSS；第二搜索模块802，用于当搜索到PSS后，在所述PSS对应的频域资源上搜索SSS和PBCH信号，对所述PBCH信号解调，得到主信息块MIB。
可选的，所述频域资源为子频段，每个子频段包括多个资源块。
可选的，该实施方式中，所述MIB包含频域位置信息，所述频域位置信息与发送所述MIB所在的同步接入信号组的子频段相对应。
如图9所示，所述用户终端800还包括：确定模块803，用于从所述MIB中获取频域位置信息，根据所述频域位置信息确定发送所述MIB所在的同步接入信号组的子频段。
可选的，所述频域位置信息，包括：所述子频段内序号最低或者最高的资源块的序号；或者，所述子频段内序号居中的资源块的序号；或者，所述子频段内序号最低的资源块与参考资源块的序号差值；或者，所述子频段内序号最高的资源块与参考资源块的序号差值；或者，所述子频段内序号居中的资源块与参考资源块的序号差值。
可选的，所述参考资源块包括：系统频段内序号最低的资源块、系统频段内序号最高的资源块或者位于系统频段中间的资源块。
可选的，所述MIB包含时间信息，所述时间信息与发送所述MIB所在的同步接入信号组的发送时间相对应；如图10所示，用户终端800还包括：同步模块804，用于从所述MIB中获取时间信息，根据所述时间信息进行帧同步。
可选的，所述时间信息包括：所述同步接入信号组包含的PSS所在的 OFDM符号在子帧中的序号；或者，所述同步接入信号组包含的SSS所在的OFDM符号在子帧中的序号；或者，所述同步接入信号组包含的PBCH信号的第一个OFDM符号在子帧中的序号。
本公开实施例的用户终端中，在多个频域资源上搜索PSS；当搜索到PSS后，在所述PSS对应的频域资源上搜索SSS和PBCH信号，对所述PBCH信号解调，得到MIB，与相关技术相比，降低了用户终端初始接入的复杂度，缩短了用户终端初始接入的时间；此外，通过在MIB中携带频域位置信息，能够使用户终端获取整个频段的具体信息；通过在MIB中携带频域位置信息，能够使用户终端精确地实现时间同步。
参见图11，图11是本公开实施例应用的网络侧设备的结构图，能够实现第一个实施例至第三个实施例的同步接入信号组的传输方法的细节，并达到相同的效果。如图11所示，该网络侧设备1100包括：处理器1101、收发机1102、存储器1103、用户接口1104和总线接口，其中：处理器1101，用于读取存储器1103中的程序，执行下列过程：生成与多个频域资源对应的同步接入信号组，所述同步接入信号组包括PSS、SSS和PBCH信号，所述PBCH信号包括主信息块MIB；使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。其中，收发机1102，用于在处理器1101的控制下接收和发送数据。
在图11中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1101代表的一个或多个处理器和存储器1103代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1102可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口1104还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1101负责管理总线架构和通常的处理，存储器1103可以存储处理器1101在执行操作时所使用的数据。
可选的，所述使用不同的波束，分别在不同的频域资源上发送与该频域 资源对应的同步接入信号组，包括：使用不同方向的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
可选的，所述频域资源为子频段，每个子频段包括多个资源块。
所述MIB包含频域位置信息，所述频域位置信息与发送所述MIB所在的同步接入信号组的子频段相对应。
可选的，所述频域位置信息，包括：所述子频段内序号最低或者最高的资源块的序号；或者，所述子频段内序号居中的资源块的序号；或者，所述子频段内序号最低的资源块与参考资源块的序号差值；或者，所述子频段内序号最高的资源块与参考资源块的序号差值；或者，所述子频段内序号居中的资源块与参考资源块的序号差值。
可选的，所述参考资源块包括：系统频段内序号最低的资源块、系统频段内序号最高的资源块或者位于系统频段中间的资源块。
可选的，所述使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组，包括：使用不同的波束，按照不同的发送时间，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
可选的，所述MIB包含时间信息，所述时间信息与发送所述MIB所在的同步接入信号组的发送时间相对应。
可选的，所述时间信息包括：所述同步接入信号组包含的PSS所在的OFDM符号在子帧中的序号；或者，所述同步接入信号组包含的SSS所在的OFDM符号在子帧中的序号；或者，所述同步接入信号组包含的PBCH信号的第一个OFDM符号在子帧中的序号。
本公开实施例的网络侧设备中，生成与多个子频段对应的同步接入信号组，所述同步接入信号组包括PSS、SSS和PBCH信号，所述PBCH信号包括MIB，其中，每个子频段包括多个资源块；使用不同的波束，分别在不同的子频段上发送与该子频段对应的同步接入信号组。通过多个子频段，且不同子频段上使用不同的波束发送同步接入信号组，能够减少同步接入信号组的信号延时，缩短用户终端初始接入的时间。
进一步地，使用不同的波束，按照不同的发送时间，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组，能够避免将相同的信息在 同一个OFDM符号内重复发送所引起的高PAPR问题。
此外，通过在MIB中携带频域位置信息，能够使用户终端获取整个频段的具体信息；通过在MIB中携带频域位置信息，能够使用户终端精确地实现时间同步。
参见图12，图12是本公开实施例应用的用户终端的结构图，能够实现第一实施例至第二实施例中的系统信息块传输方法的细节，并达到相同的效果。如图12所示，用户终端1200包括：至少一个处理器1201、存储器1202、至少一个网络接口1204和用户接口1203。用户终端1200中的各个组件通过总线系统1205耦合在一起。可理解，总线系统1205用于实现这些组件之间的连接通信。总线系统1205除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图12中将各种总线都标为总线系统1205。
其中，用户接口1203可以包括显示器、键盘或者点击设备(例如，鼠标，轨迹球(track ball)、触感板或者触摸屏等。
可以理解，本公开实施例中的存储器1202可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本文描述的系统和方法的存储器1202旨在包括但不限于这些和任意其它适合类型的存储器。
在一些实施方式中，存储器1202存储了如下的元素，可执行模块或者数据结构，或者他们的子集，或者他们的扩展集：操作系统12021和应用程序12022。
其中，操作系统12021，包含各种系统程序，例如框架层、核心库层、驱动层等，用于实现各种基础业务以及处理基于硬件的任务。应用程序12022，包含各种应用程序，例如媒体播放器(Media Player)、浏览器(Browser)等，用于实现各种应用业务。实现本公开实施例方法的程序可以包含在应用程序12022中。
在本公开实施例中，通过调用存储器1202存储的程序或指令，具体的，可以是应用程序12022中存储的程序或指令，处理器1201用于：在多个频域资源上搜索PSS；当搜索到PSS后，在所述PSS对应的频域资源上搜索SSS和PBCH信号，对所述PBCH信号解调，得到MIB。
上述本公开实施例揭示的方法可以应用于处理器1201中，或者由处理器1201实现。处理器1201可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器1201中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器1201可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable GateArray，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本公开实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本公开实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1202，处理器1201读取存储器1202中的信息，结合其硬件完成上述方法的步骤。
可以理解的是，本文描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits，ASIC)、数字信号处理 器(Digital Signal Processing，DSP)、数字信号处理设备(DSP Device，DSPD)、可编程逻辑设备(Programmable Logic Device，PLD)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本申请所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本文所述功能的模块(例如过程、函数等)来实现本文所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
可选的，所述频域资源为子频段，每个子频段包括多个资源块。
可选的，所述MIB包含频域位置信息，所述频域位置信息与发送所述MIB所在的同步接入信号组的子频段相对应；所述对所述PBCH信号解调，得到MIB之后，处理器1201还用于：从所述MIB中获取频域位置信息，根据所述频域位置信息确定发送所述MIB所在的同步接入信号组的子频段。
可选的，所述频域位置信息，包括：所述子频段内序号最低或者最高的资源块的序号；或者，所述子频段内序号居中的资源块的序号；或者，所述子频段内序号最低的资源块与参考资源块的序号差值；或者，所述子频段内序号最高的资源块与参考资源块的序号差值；或者，所述子频段内序号居中的资源块与参考资源块的序号差值。
可选的，所述参考资源块包括：系统频段内序号最低的资源块、系统频段内序号最高的资源块或者位于系统频段中间的资源块。
可选的，所述MIB包含时间信息，所述时间信息与发送所述MIB所在的同步接入信号组的发送时间相对应；所述对所述PBCH信号解调，得到MIB之后，处理器1201还用于：从所述MIB中获取时间信息，根据所述时间信息进行帧同步。
可选的，所述时间信息包括：所述同步接入信号组包含的PSS所在的OFDM符号在子帧中的序号；或者，所述同步接入信号组包含的SSS所在的OFDM符号在子帧中的序号；或者，所述同步接入信号组包含的PBCH信号的第一个OFDM符号在子帧中的序号。
本公开实施例的用户终端中，在多个频域资源上搜索PSS；当搜索到PSS后，在所述PSS对应的频域资源上搜索SSS和PBCH信号，对所述PBCH信 号解调，得到MIB，与相关技术相比，降低了用户终端初始接入的复杂度，缩短了用户终端初始接入的时间；此外，通过在MIB中携带频域位置信息，能够使用户终端获取整个频段的具体信息；通过在MIB中携带频域位置信息，能够使用户终端精确地实现时间同步。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本公开的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的实施例中，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，所述单元的划分，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，例如多个单元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。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，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公开实施例方案的目的。
另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的部分可以 以软件产品的形式体现出来，该计算机软件产品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)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以权利要求的保护范围为准。

Claims (37)

  1. 一种同步接入信号组的传输方法，包括：
    生成与多个频域资源对应的同步接入信号组，所述同步接入信号组包括主同步信号PSS、次同步信号SSS和物理广播信道PBCH信号，所述PBCH信号包括主信息块MIB；
    使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
  2. 根据权利要求1所述的方法，其中，所述使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组，包括：
    使用不同方向的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
  3. 根据权利要求1所述的方法，其中，所述频域资源为子频段，每个子频段包括多个资源块。
  4. 根据权利要求3所述的方法，其中，所述MIB包含频域位置信息，所述频域位置信息与发送所述MIB所在的同步接入信号组的子频段相对应。
  5. 根据权利要求4所述的方法，其中，所述频域位置信息，包括：
    所述子频段内序号最低或者最高的资源块的序号；
    或者，所述子频段内序号居中的资源块的序号；
    或者，所述子频段内序号最低的资源块与参考资源块的序号差值；
    或者，所述子频段内序号最高的资源块与参考资源块的序号差值；
    或者，所述子频段内序号居中的资源块与参考资源块的序号差值。
  6. 根据权利要求5所述的方法，其中，所述参考资源块包括：
    系统频段内序号最低的资源块、系统频段内序号最高的资源块或者位于系统频段中间的资源块。
  7. 根据权利要求3所述的方法，其中，所述使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组，包括：
    使用不同的波束，按照不同的发送时间，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
  8. 根据权利要求7所述的方法，其中，所述MIB包含时间信息，所述时间信息与发送所述MIB所在的同步接入信号组的发送时间相对应。
  9. 根据权利要求8所述的方法，其中，所述时间信息包括：
    所述同步接入信号组包含的PSS所在的OFDM符号在子帧中的序号；
    或者，
    所述同步接入信号组包含的SSS所在的OFDM符号在子帧中的序号；
    或者，
    所述同步接入信号组包含的PBCH信号的第一个OFDM符号在子帧中的序号。
  10. 一种同步接入信号组的传输方法，包括：
    在多个频域资源上搜索主同步信号PSS；
    当搜索到PSS后，在所述PSS对应的频域资源上搜索次同步信号SSS和物理广播信道PBCH信号，对所述PBCH信号解调，得到主信息块MIB。
  11. 根据权利要求10所述的方法，其中，所述频域资源为子频段，每个子频段包括多个资源块。
  12. 根据权利要求11所述的方法，其中，所述MIB包含频域位置信息，所述频域位置信息与发送所述MIB所在的同步接入信号组的子频段相对应；
    所述对所述PBCH信号解调，得到MIB之后，还包括：
    从所述MIB中获取频域位置信息，根据所述频域位置信息确定发送所述MIB所在的同步接入信号组的子频段。
  13. 根据权利要求12所述的方法，其中，所述频域位置信息，包括：
    所述子频段内序号最低或者最高的资源块的序号；
    或者，所述子频段内序号居中的资源块的序号；
    或者，所述子频段内序号最低的资源块与参考资源块的序号差值；
    或者，所述子频段内序号最高的资源块与参考资源块的序号差值；
    或者，所述子频段内序号居中的资源块与参考资源块的序号差值。
  14. 根据权利要求13所述的方法，其中，所述参考资源块包括：
    系统频段内序号最低的资源块、系统频段内序号最高的资源块或者位于系统频段中间的资源块。
  15. 根据权利要求11所述的方法，其中，所述MIB包含时间信息，所述时间信息与发送所述MIB所在的同步接入信号组的发送时间相对应；
    所述对所述PBCH信号解调，得到MIB之后，还包括：
    从所述MIB中获取时间信息，根据所述时间信息进行帧同步。
  16. 根据权利要求15所述的方法，其中，所述时间信息包括：
    所述同步接入信号组包含的PSS所在的OFDM符号在子帧中的序号；
    或者，
    所述同步接入信号组包含的SSS所在的OFDM符号在子帧中的序号；
    或者，
    所述同步接入信号组包含的PBCH信号的第一个OFDM符号在子帧中的序号。
  17. 一种网络侧设备，包括：
    生成模块，用于生成与多个频域资源对应的同步接入信号组，所述同步接入信号组包括主同步信号PSS、次同步信号SSS和物理广播信道PBCH信号，所述PBCH信号包括主信息块MIB；
    发送模块，用于使用不同的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
  18. 根据权利要求17所述的网络侧设备，其中，所述发送模块用于使用不同方向的波束，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
  19. 根据权利要求18所述的网络侧设备，其中，所述频域资源为子频段，每个子频段包括多个资源块。
  20. 根据权利要求19所述的网络侧设备，其中，所述MIB包含频域位置信息，所述频域位置信息与发送所述MIB所在的同步接入信号组的子频段相对应。
  21. 根据权利要求20所述的网络侧设备，其中，所述频域位置信息，包括：
    所述子频段内序号最低或者最高的资源块的序号；
    或者，所述子频段内序号居中的资源块的序号；
    或者，所述子频段内序号最低的资源块与参考资源块的序号差值；
    或者，所述子频段内序号最高的资源块与参考资源块的序号差值；
    或者，所述子频段内序号居中的资源块与参考资源块的序号差值。
  22. 根据权利要求21所述的网络侧设备，其中，所述参考资源块包括：
    系统频段内序号最低的资源块、系统频段内序号最高的资源块或者位于系统频段中间的资源块。
  23. 根据权利要求19所述的网络侧设备，其中，所述发送模块用于使用不同的波束，按照不同的发送时间，分别在不同的频域资源上发送与该频域资源对应的同步接入信号组。
  24. 根据权利要求23所述的网络侧设备，其中，所述MIB包含时间信息，所述时间信息与发送所述MIB所在的同步接入信号组的发送时间相对应。
  25. 根据权利要求24所述的网络侧设备，其中，所述时间信息包括：
    所述同步接入信号组包含的PSS所在的OFDM符号在子帧中的序号；
    或者，
    所述同步接入信号组包含的SSS所在的OFDM符号在子帧中的序号；
    或者，
    所述同步接入信号组包含的PBCH信号的第一个OFDM符号在子帧中的序号。
  26. 一种用户终端，包括：
    第一搜索模块，用于在多个频域资源上搜索主同步信号PSS；
    第二搜索模块，用于当搜索到PSS后，在所述PSS对应的频域资源上搜索次同步信号SSS和物理广播信道PBCH信号，对所述PBCH信号解调，得到主信息块MIB。
  27. 根据权利要求26所述的用户终端，其中，所述频域资源为子频段，每个子频段包括多个资源块。
  28. 根据权利要求27所述的用户终端，其中，所述MIB包含频域位置信息，所述频域位置信息与发送所述MIB所在的同步接入信号组的子频段相对应；
    所述用户终端还包括：
    确定模块，用于从所述MIB中获取频域位置信息，根据所述频域位置信息确定发送所述MIB所在的同步接入信号组的子频段。
  29. 根据权利要求28所述的用户终端，其中，所述频域位置信息，包括：
    所述子频段内序号最低或者最高的资源块的序号；
    或者，所述子频段内序号居中的资源块的序号；
    或者，所述子频段内序号最低的资源块与参考资源块的序号差值；
    或者，所述子频段内序号最高的资源块与参考资源块的序号差值；
    或者，所述子频段内序号居中的资源块与参考资源块的序号差值。
  30. 根据权利要求29所述的用户终端，其中，所述参考资源块包括：
    系统频段内序号最低的资源块、系统频段内序号最高的资源块或者位于系统频段中间的资源块。
  31. 根据权利要求27所述的用户终端，其中，所述MIB包含时间信息，所述时间信息与发送所述MIB所在的同步接入信号组的发送时间相对应；
    所述用户终端还包括：
    同步模块，用于从所述MIB中获取时间信息，根据所述时间信息进行帧同步。
  32. 根据权利要求31所述的用户终端，其中，所述时间信息包括：
    所述同步接入信号组包含的PSS所在的OFDM符号在子帧中的序号；
    或者，
    所述同步接入信号组包含的SSS所在的OFDM符号在子帧中的序号；
    或者，
    所述同步接入信号组包含的PBCH信号的第一个OFDM符号在子帧中的序号。
  33. 一种同步接入信号组的传输系统，包括如权利要求17至25中任一项所述网络侧设备和如权利要求26至32中任一项所述用户终端。
  34. 一种网络侧设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如权利要求1至9中任一项所述的同步接入信号组的传输方法的步骤。
  35. 一种用户终端，包括：存储器、处理器及存储在所述存储器上并可 在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如权利要求10至16中任一项所述的同步接入信号组的传输方法的步骤。
  36. 一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1至9中任一项所述的同步接入信号组的传输方法步骤。
  37. 一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求10至16中任一项所述的同步接入信号组的传输方法步骤。
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