WO2018171469A1 - Procédés d'émission et de réception d'un bloc de signaux de synchronisation, dispositif associé et système - Google Patents

Procédés d'émission et de réception d'un bloc de signaux de synchronisation, dispositif associé et système Download PDF

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Publication number
WO2018171469A1
WO2018171469A1 PCT/CN2018/078849 CN2018078849W WO2018171469A1 WO 2018171469 A1 WO2018171469 A1 WO 2018171469A1 CN 2018078849 W CN2018078849 W CN 2018078849W WO 2018171469 A1 WO2018171469 A1 WO 2018171469A1
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Prior art keywords
time resource
frame
subframe
slot
pss
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PCT/CN2018/078849
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English (en)
Chinese (zh)
Inventor
李建军
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维沃移动通信有限公司
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Publication of WO2018171469A1 publication Critical patent/WO2018171469A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a method, a receiving method, a related device, and a system for transmitting a synchronous access signal group.
  • the user terminal needs to detect a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS) to achieve initial time and frequency synchronization, and then detect the physical broadcast channel.
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • PBCH Physical Broadcast Channel
  • the related art adopts a transmission scheme of a synchronous access signal set (SS burst), wherein one synchronization access signal set includes multiple synchronization access signal groups (SS blocks), and one synchronization access signal group includes PSS and SSS.
  • SS burst synchronous access signal set
  • one synchronization access signal set includes multiple synchronization access signal groups (SS blocks)
  • one synchronization access signal group includes PSS and SSS.
  • the PBCH signal, and each synchronization access signal group needs to include its sequence number in the synchronization access set, and the user terminal implements frame synchronization by using the sequence number.
  • the overhead of the downlink channel is increased due to the need to transmit its sequence number in the synchronized access set in the synchronized access signal group.
  • the embodiments of the present disclosure provide a method, a receiving method, a related device, and a system for transmitting a synchronization access signal group to solve the problem of increased overhead of the downlink channel.
  • an embodiment of the present disclosure provides a method for transmitting a synchronization access signal group, where the synchronization access signal group includes a PSS, an SSS, and a PBCH signal, and the method includes:
  • the PBCH signal Transmitting, by the third time resource, the PBCH signal, where the first time resource, the second time resource, and the third time resource belong to the same frame, and the PBCH signal includes the frame system Frame number.
  • an embodiment of the present disclosure further provides a method for receiving a synchronization access signal group, where the synchronization access signal group includes a PSS, an SSS, and a PBCH signal, and the method includes:
  • an embodiment of the present disclosure further provides a network side device, configured to synchronize transmission of an access signal group, where the synchronization access signal group includes a PSS, an SSS, and a PBCH signal, where the network side device includes:
  • a first sending module configured to send the PSS and the SSS respectively in a first time resource and a second time resource
  • a second sending module configured to send the PBCH signal in a third time resource, where the first time resource, the second time resource, and the third time resource belong to the same frame, and the PBCH
  • the signal includes the system frame number of the frame.
  • the embodiment of the present disclosure further provides a user terminal, where the synchronization access signal group includes a PSS, an SSS, and a PBCH signal, where the user terminal includes:
  • a first search module configured to search for the PSS at a first time resource
  • a channel estimation module configured to perform channel estimation by using the PSS, to obtain a channel estimation result
  • a first detecting module configured to use the channel estimation result to detect the SSS in a second time resource
  • a second detecting module configured to detect the PBCH signal in a third time resource, where the first time resource, the second time resource, and the third time resource belong to the same frame;
  • a synchronization module configured to acquire a system frame number of the frame included in the PBCH signal, and perform frame synchronization by using the system frame number.
  • an embodiment of the present disclosure further provides a network side device, including: a processor, a memory, and a computer program stored on the memory and operable on the processor, where the computer program is processed.
  • a network side device including: a processor, a memory, and a computer program stored on the memory and operable on the processor, where the computer program is processed.
  • an embodiment of the present disclosure further provides a user terminal, a processor, a memory, and a computer program stored on the memory and executable on the processor, when the computer program is executed by the processor.
  • the embodiment of the present disclosure further 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, implementing the synchronous access in the first aspect The steps in the method of sending a signal group.
  • an embodiment of the present disclosure further 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, implementing the synchronous access in the second aspect The steps in the method of receiving the signal group.
  • the PSS and the SSS are respectively sent in the first time resource and the second time resource; and the PBCH signal is sent in the third time resource, where the first time resource, the second time resource, and the third time resource belong to In the same frame, and the PBCH signal includes the system frame number of the frame, the sequence number of the synchronous access signal group can be avoided in the downlink channel, thereby reducing the overhead of the downlink channel and improving the utilization efficiency of the system.
  • 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 an embodiment of the present disclosure
  • FIG. 3 is a flowchart of another method for transmitting a synchronization access signal group according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of sending a synchronization access signal group according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of another synchronous access signal group according to an embodiment of the present disclosure.
  • FIG. 6 is a flowchart of a method for receiving a synchronization access signal group according to an embodiment of the present disclosure
  • FIG. 7 is a flowchart of another method for receiving a synchronization access signal group according to an embodiment of the present disclosure.
  • FIG. 8 is a structural diagram of a network side device according to an embodiment of the present disclosure.
  • FIG. 9 is a structural diagram of another network side device according to an embodiment of the present disclosure.
  • FIG. 10 is a structural diagram of a user terminal according to an embodiment of the present disclosure.
  • FIG. 11 is a structural diagram of another user terminal according to an embodiment of the present disclosure.
  • FIG. 12 is a structural diagram of another network side device according to an embodiment of the present disclosure.
  • FIG. 13 is a structural diagram of another user terminal according to an embodiment 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 a User Equipment (UE), for example, it can be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), and a mobile Internet device (Mobile Internet Device, The terminal side device such as the MID) or the wearable device, it should be noted that the specific type of the user terminal 11 is not limited in the embodiment of the present disclosure.
  • UE User Equipment
  • PDA personal digital assistant
  • Mobile Internet Device Mobile Internet Device
  • the terminal side device such as the MID
  • the wearable device it should be noted that 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).
  • TRP Transmission Reception Point
  • AP access point
  • network side device 12 is 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 the following embodiments.
  • FIG. 2 is a flowchart of a method for transmitting a synchronization access signal group according to an embodiment of the present disclosure, where the synchronization access signal group includes PSS, SSS, and PBCH signals, and the method may be applied to a network side.
  • the device as shown in Figure 2, includes the following steps:
  • Step 201 Send the PSS and the SSS respectively in a first time resource and a second time resource.
  • the step 201 may be that one or more PSSs are sent on the first time resource, and if the multiple times are sent, the same antenna port may be used each time, and may be sent by using one antenna port. And the one or more SSSs may be sent on the second time resource, and if the multiple times are sent, the same antenna port may be used each time, and may be sent by using one antenna port.
  • the antenna port used for transmitting the PSS and the antenna port used for transmitting the SSS may be the same antenna port or different antenna ports.
  • the second time resource may be a time resource that is continuous with the first time resource.
  • the time-order relationship between the first time resource and the second time resource is not limited, for example, the first time resource.
  • the first time resource may be located in the front of the second time resource; or the first time resource may be located in the second time resource, of course, the embodiment of the present disclosure does not limit this.
  • Step 202 Send, at a third time resource, the PBCH signal, where the first time resource, the second time resource, and the third time resource belong to the same frame, and the PBCH signal includes the System frame number (SFN) of the frame.
  • SFN System frame number
  • the third time resource may be a time resource that is continuous with the first time resource, or may be a time resource that is continuous with the second time resource.
  • the above PBCH signal may be transmitted using two or more antenna ports.
  • the system frame number may be a frame number used to indicate that the frame is in the communication system, that is, the user terminal can implement frame synchronization by using the system frame number.
  • the system frame number included in the PBCH signal is the complete system frame number, that is, the system frame number whose data length is complete.
  • the length of the system frame number is 10 bits
  • the length of the system frame number included in the PBCH signal is also 10 bits.
  • the PSS and the SSS are respectively sent in a first time resource and a second time resource; and the PBCH signal is sent in a third time resource, where the first time resource, the The second time resource and the third time resource are in the same frame, and the PBCH signal includes a system frame number of the frame, which can avoid transmitting the sequence number of the synchronous access signal group in the downlink channel, thereby reducing the downlink channel.
  • the overhead increases the utilization efficiency of the system.
  • FIG. 3 is a flowchart of another method for transmitting a synchronization access signal group according to an embodiment of the present disclosure, where the synchronization access signal group includes PSS, SSS, and PBCH signals, and the method may be applied to a network.
  • the main difference between the embodiment and the embodiment shown in FIG. 3 is that the fourth time resource and the fifth time resource are added on the basis of the embodiment shown in FIG. 2, and the PSS and the PSS are respectively sent.
  • the step of transmitting the PBCH signal in the sixth time resource to improve performance of the user terminal receiving the synchronization access signal group. As shown in Figure 3, the following steps are included:
  • Step 301 Send the PSS and the SSS respectively in a first time resource and a second time resource.
  • the step 301 may be that one or more PSSs are sent on the first time resource, and if the multiple times are sent, the same antenna port may be used each time, and may be sent by using one antenna port. And the one or more SSSs may be sent on the second time resource, and if the multiple times are sent, the same antenna port may be used each time, and may be sent by using one antenna port.
  • Step 302 Send the PBCH signal in a third time resource, where the first time resource, the second time resource, and the third time resource belong to the same frame, and the first time resource, The second time resource and the third time resource are attributed to a first subframe of the frame, and the PBCH signal includes a system frame number of the frame.
  • the third time resource may be a time resource that is continuous with the first time resource, or may be a time resource that is continuous with the second time resource.
  • the above PBCH signal may be transmitted using two or more antenna ports.
  • the system frame number in the PBCH signal is a complete system frame number.
  • the complete system frame number may be a serial number capable of completely indicating the frame in the communication system, that is, after receiving the frame number of the system, the user terminal may implement frame synchronization without using any other information, thereby Reduce the overhead of the downlink channel.
  • the above system frame number may be 10 bits of information to completely represent the frame number of the above frame in 1024 frames in the communication system.
  • the system frame number may also be a sequence number indicating the frame in a specific time period, and after receiving the system frame number, the user terminal performs frame synchronization in conjunction with the specific time period. It should be noted that in this embodiment, the embodiment shown in FIG. 2 can be applied, and the same beneficial effects can be achieved.
  • the PBCH signal includes a Master Information Block (MIB), where the MIB includes the system frame number.
  • MIB Master Information Block
  • the MIB is transmitted in the PBCH signal, and the system frame number is carried in the MIB. It should be noted that in this embodiment, it can be applied to the embodiment shown in FIG. 2.
  • the information field of the MIB can be as shown in Table 1:
  • the MIB information shown in Table 1 may be sent from the frame header in the SS burst.
  • the user terminal may obtain the current complete frame sequence 10 bit information through the system frame number. . Thereby achieving synchronization of the frame level.
  • the intra-frame synchronization is obtained by synchronizing the structures of the PSS, SSS and PBCH signals in the access signal group, so that the user terminal can achieve accurate synchronization.
  • Step 303 Send the PSS and the SSS in the fourth time resource and the fifth time resource, respectively.
  • the PSS When the PSS is sent by the resource in the fourth time, the PSS can be used to transmit the PSS by using the first time resource. Of course, it can be a different antenna port, and the resource can be sent once or multiple times in the fourth time. And when the SSS is sent by the resource in the fifth time, the second antenna may be used to send the SSS to use the same antenna port. Of course, it may be a different antenna port, and the resource may be sent one or more times in the fifth time.
  • Step 304 The PBCH signal is sent in a sixth time resource, where the fourth time resource, the fifth time resource, and the sixth time resource are attributed to a second subframe of the frame.
  • the first subframe and the second subframe may be subframes that are not consecutive in the same subframe.
  • the first subframe may be the first subframe of the frame
  • the second subframe may be the subframe.
  • the time resource in the fifth subframe of the frame, or the first subframe may be the second subframe of the frame
  • the second subframe may be the time resource in the sixth subframe of the frame, etc.
  • the antenna port used for transmitting the PBCH signal in the sixth time resource may be the same antenna port as the antenna port used for transmitting the PBCH signal in the third time resource. Of course, different antenna ports may be used.
  • the first subframe of the frame is the first subframe of the frame
  • the second subframe of the frame is the fifth subframe of the frame
  • the first time resource includes a last orthogonal frequency division multiplexing OFDM symbol of a first slot slot of a first subframe of the frame
  • the second time resource includes a first subframe of the frame a second last OFDM symbol of the first slot
  • the third time resource includes a first four OFDM symbols of a second slot of a first subframe of the frame
  • the fourth time resource includes the frame a last OFDM symbol of the 1st slot of the 5th subframe
  • the fifth time resource includes a second to last OFDM symbol of the 1st slot of the 5th subframe of the frame
  • the sixth time resource includes The first four OFDM symbols of the second slot of the fifth subframe of the frame.
  • a synchronous access signal group occupies one frame transmission, and the PSS and SSS are sent twice.
  • the PSS transmits the last OFDM symbol of the first slot of the first subframe in one frame for the first time
  • the PSS transmits the first of the fifth subframe of the frame for the second time.
  • the last OFDM symbol of the slot is sent.
  • the SSS first transmits the second last OFDM symbol of the first slot of the first subframe in one frame, and the SSS sends the reciprocal of the first slot of the fifth subframe of the second frame in one frame.
  • the second OFDM symbol is transmitted.
  • the SSS always transmits the previous OFDM symbol in the PSS, which is beneficial for the user terminal to detect the SSS by using the channel estimation of the PSS, so as to improve the detection performance of the SSS.
  • the PBCH information is transmitted twice in one SS block, that is, within one frame. The first four OFDM symbols of the second slot of the first subframe in the first subframe are transmitted, and the first four OFDMs of the second slot of the fifth subframe of the fifth subframe in one frame are transmitted. The symbol transmission, that is, the PBCH is always transmitted in the following four OFDM symbols of the PSS to improve the detection performance of the PBCH signal.
  • the synchronization access signal group is transmitted in the first subframe and the fifth subframe, so that the synchronization access signal group can be uniformly transmitted each time, and different synchronizations are performed.
  • the spacing between the access signal groups is also uniform, thereby improving the transmission performance of the synchronized access signal group.
  • the sending by the first time resource and the second time resource, the PSS and the SSS respectively, including:
  • Transmitting the PSS and the SSS respectively in the fourth time resource and the fifth time resource including:
  • the PSS is sent multiple times in the fourth time resource, and the SSS is sent multiple times in the fifth time resource.
  • the PSS can be sent multiple times in the first time resource, which can improve the performance of the PSS detection. And sending the PSS multiple times may be sent using the same antenna port.
  • the SSS can be sent multiple times in the second time resource, which can improve the performance of the SSS detection. And sending the SSS multiple times can be sent using the same antenna port.
  • the PSS can be sent multiple times in the fourth time resource, which can further improve the performance of the PSS detection.
  • the SSS can be sent multiple times in the fifth time resource, which can further improve the performance of the SSS detection.
  • the first subframe of the frame is the first subframe of the frame
  • the second subframe of the frame is the fifth subframe of the frame
  • the first time resource includes first, third, fifth, and seventh OFDM symbols of a first slot of a first subframe of the frame
  • the second time resource includes the frame a second, fourth, and sixth OFDM symbol of a first slot of the first subframe
  • the third time resource including all OFDM symbols of a second slot of the first subframe of the frame
  • the fourth time resource includes first, third, fifth, and seventh OFDM symbols of a first slot of a fifth subframe of the frame
  • the fifth time resource includes a first of the frames a second, fourth, and sixth OFDM symbol of a first slot of five subframes
  • the sixth time resource including all OFDM symbols of a second slot of a fifth subframe of the frame
  • the transmitting the PSS multiple times in the first time resource includes:
  • Sending the SSS multiple times in the second time resource including:
  • the transmitting the PSS multiple times in the fourth time resource includes:
  • the SSS is transmitted in the second, fourth, and sixth OFDM symbols of the first slot of the fifth subframe of the frame, respectively.
  • a synchronous access signal group occupies one frame transmission, and the PSS and SSS are sent twice. Each time the PSSS is transmitted, the PSSS is repeated 4 times, and the SSS is repeated 3 times.
  • the PSS transmits the 0th, 2nd, 4th, and 6th OFDM symbols of the first slot of the first subframe in one frame for the first time, and the PSS transmits the second time in a frame.
  • the 0th, 2nd, 4th and 6th OFDM symbols of the first slot of the 5 subframes are transmitted.
  • the SSS first transmits the first, third, and fifth OFDM symbols of the first slot of the first subframe in one frame, and the SSS transmits the first of the fifth subframe of the second frame in one frame.
  • the first, third, and fifth OFDM symbols of the slot are transmitted.
  • PSS can be implemented on both sides of each SSS, so that the user terminal can perform SSS detection by using the channel estimation of the PSS to improve the detection performance of the SSS.
  • the PBCH is sent twice in one SS block, that is, within one frame, and all OFDM symbols of the second slot of the first subframe in the first transmission are transmitted in the first time, and the PSS is sent in the second time. All OFDM symbols of the second slot of the 5th subframe in one frame are transmitted. That is, PSS and SSS occupy one slot, and PBCH occupies one slot behind PSS and SSS, which further improves the detection performance of PBCH.
  • the sending, in the third time resource, the PBCH signal includes:
  • the sixth time resource sending, by the sixth time resource, the PBCH signal, including:
  • the PBCH signal is transmitted using a plurality of antenna ports.
  • the PBCH signal is transmitted by using multiple antenna ports in the third time resource and the sixth time resource to improve the detection performance of the PBCH signal.
  • the sending, by using the multiple antenna ports, the PBCH signal includes:
  • the PBCH signal is transmitted using a plurality of antenna ports using space frequency diversity or space time diversity.
  • the PBCH signal may be sent by at least two PBCHs on at least two adjacent subcarriers or at least two OFDM symbols by using a plurality of antenna ports and using space frequency diversity or space time diversity.
  • the symbols are precoded and the encoded symbols are transmitted on multiple antenna ports.
  • the foregoing uses a plurality of antenna ports to transmit the PBCH signal by using space frequency diversity or space-time diversity, including:
  • the transmitted information symbol y(i) [y (0) (i) y (1) (i)]
  • the precoding operations for the T and PBCH signal symbols are as follows:
  • Re represents the real part of the complex number
  • Im represents the virtual step of the complex number
  • j is the imaginary unit.
  • the precoding method is only an example.
  • the precoding mode of the PBCH signal is not limited.
  • the PBCH signal is transmitted by using the space frequency diversity or the space-time diversity, so that the detection performance of the PBCH can be improved, that is, the PBCH signal is more easily detected by the user terminal.
  • FIG. 6 is a method for receiving a synchronization access signal group according to an embodiment of the present disclosure.
  • the synchronization access signal group includes PSS, SSS, and PBCH signals, and the method may be applied to a user terminal, as shown in FIG. 6. As shown, the following steps are included:
  • Step 601 Search for the PSS in the first time resource.
  • the user terminal may use an antenna terminal port to search for the PSS on the first time resource.
  • the multiple antenna ports may be used, which is not limited in this embodiment.
  • Step 602 Perform channel estimation by using the PSS, and obtain a channel estimation result.
  • Channel estimation can be performed when a PSS user terminal is detected to obtain a channel estimation result.
  • Step 603 Detect the SSS in the second time resource by using the channel estimation result.
  • the SSS can be detected using the channel estimation result of the PSS to achieve fast detection of the SSS.
  • Step 604 The third time resource detects the PBCH signal, where the first time resource, the second time resource, and the third time resource belong to the same frame.
  • the third time resource may be used to detect the PBCH signal by using the foregoing channel estimation result.
  • the implementation of the disclosure is not limited.
  • the user terminal may also detect the PBCH signal by other methods.
  • Step 605 Acquire a system frame number of the frame included in the PBCH signal, and perform frame synchronization by using the system frame number.
  • the system frame number included in the PBCH signal can be obtained.
  • frame synchronization can be implemented, that is, the user terminal synchronizes with the network side device frame.
  • the sequence number of the synchronous access signal group can be avoided in the downlink channel, thereby reducing the overhead of the downlink channel and improving the utilization efficiency of the system.
  • FIG. 7 is a method for receiving a synchronization access signal group according to an embodiment of the present disclosure.
  • the synchronization access signal group includes a PSS, an SSS, and a PBCH signal, and the method may be applied to a user terminal, as shown in FIG. As shown in 7, it includes the following steps:
  • Step 701 Search for the PSS in the first time resource.
  • the user terminal may use the one antenna terminal port to search for the PSS on the first time resource.
  • the multiple antenna ports may be used, which is not limited in this embodiment.
  • Step 702 Perform channel estimation by using the PSS, and obtain a channel estimation result.
  • Channel estimation can be performed when a PSS user terminal is detected to obtain a channel estimation result.
  • Step 703 Detect the SSS in the second time resource by using the channel estimation result.
  • the SSS can be detected using the channel estimation result of the PSS to achieve fast detection of the SSS.
  • Step 704 The third time resource detects the PBCH signal, where the first time resource, the second time resource, and the third time resource belong to the same frame, and the first time resource, The second time resource and the third time resource are attributed to the first subframe of the frame.
  • the third time resource may be used to detect the PBCH signal by using the foregoing channel estimation result.
  • the implementation of the disclosure is not limited.
  • the user terminal may also detect the PBCH signal by other methods.
  • Step 705 Search for the PSS in the fourth time resource.
  • the user terminal may search for the PSS using one antenna port and may be the same or a different antenna port as used at the first time resource. By searching the PSS again, it is possible to improve the detection performance of the PSS.
  • Step 706 Perform channel estimation by using the PSS searched by the fourth time resource, and use the channel estimation result of the channel estimation to detect the SSS at a fifth time resource.
  • the user terminal may use one antenna port detection and may be the same or a different antenna port as used at the second time resource. By detecting the SSS again, it is possible to improve the detection performance of the SSS.
  • Step 707 The PBCH signal is detected at a sixth time resource, where the fourth time resource, the fifth time resource, and the sixth time resource are attributed to a second subframe of the frame.
  • the detection performance of the PBCH can be improved.
  • Step 708 Acquire a system frame number of the frame included in the PBCH signal, and perform frame synchronization by using the system frame number.
  • the system frame number obtained in step 708 may be the system frame number in the PBCH signal detected in step 703, or the system frame number in the PBCH signal may be detected in step 707. And if the PBCH signal is detected in step 703, the frame synchronization is completed using the system frame number in the PBCH signal, so that step 708 may not be performed subsequently. After the system frame number is obtained, frame synchronization can be implemented, that is, the user terminal synchronizes with the network side device frame.
  • the system frame number in the PBCH signal is a complete system frame number.
  • the PBCH signal includes a main system information block (MIB), the MIB includes the system frame number, and the acquiring the system frame number included in the PBCH signal includes:
  • MIB main system information block
  • the MIB includes the system frame number
  • the acquiring the system frame number included in the PBCH signal includes:
  • the first subframe of the frame is the first subframe of the frame
  • the second subframe of the frame is the fifth subframe of the frame
  • the first time resource includes a last orthogonal frequency division multiplexing OFDM symbol of a first slot slot of a first subframe of the frame
  • the second time resource includes a first subframe of the frame a second last OFDM symbol of the first slot
  • the third time resource includes a first four OFDM symbols of a second slot of a first subframe of the frame
  • the fourth time resource includes the frame a last OFDM symbol of the 1st slot of the 5th subframe
  • the fifth time resource includes a second to last OFDM symbol of the 1st slot of the 5th subframe of the frame
  • the sixth time resource includes The first four OFDM symbols of the second slot of the fifth subframe of the frame.
  • the searching for the PSS in the first time resource includes:
  • the detecting, by using the channel estimation result, the SSS in the second time resource including:
  • the searching for the PSS in the fourth time resource includes:
  • Channel estimation is performed using the PSS searched at the fourth time resource, and the SSS is detected multiple times at a fifth time resource using the channel estimation result of the channel estimation.
  • the PSS can be searched multiple times in the first time resource to improve the detection performance of the PSS, and multiple searches can be performed using the same antenna port.
  • the SSS can be detected multiple times in the second time resource to improve the detection performance of the SSS, and multiple detections can be performed using the same antenna port. And can improve the detection performance of PSS, and can use the same antenna port for multiple searches. And can improve the detection performance of SSS, and can use the same antenna port for multiple detections.
  • the first subframe of the frame is the first subframe of the frame
  • the second subframe of the frame is the fifth subframe of the frame
  • the first time resource includes first, third, fifth, and seventh OFDM symbols of a first slot of a first subframe of the frame
  • the second time resource includes the frame a second, fourth, and sixth OFDM symbol of a first slot of the first subframe
  • the third time resource including all OFDM symbols of a second slot of the first subframe of the frame
  • the fourth time resource includes first, third, fifth, and seventh OFDM symbols of a first slot of a fifth subframe of the frame
  • the fifth time resource includes a first of the frames a second, fourth, and sixth OFDM symbol of a first slot of five subframes
  • the sixth time resource including all OFDM symbols of a second slot of a fifth subframe of the frame
  • the searching for the PSS multiple times in the first time resource includes:
  • the searching for the PSS in the fourth time resource includes:
  • the second, fourth, and sixth OFDM symbols of the first slot of the fifth subframe of the frame are respectively detected by the SSS.
  • the detecting, in the third time resource, the PBCH signal includes:
  • the detecting, in the sixth time resource, the PBCH signal includes:
  • the PBCH signal is detected using a plurality of antenna ports.
  • the PBCH signal can be detected by using multiple antenna ports in the third time resource and the sixth time resource, respectively, to improve the detection performance of the PBCH signal.
  • the detecting the PBCH signal by using multiple antenna ports includes:
  • the PBCH signal is detected by space frequency diversity or space time diversity using a plurality of antenna ports.
  • the present embodiment is an implementation manner of the user terminal corresponding to the embodiment shown in FIG. 3, and the specific implementation manners of the embodiment may refer to the related description of the embodiment shown in FIG. 3, and achieve the same beneficial effects. Avoid repeating the description and will not repeat them here.
  • FIG. 8 is a structural diagram of a network side device according to an embodiment of the present disclosure, which can implement the details of the method for transmitting a synchronization access signal group in the embodiment shown in FIG. 2 and FIG. Effect.
  • the network side device is configured to synchronize transmission of an access signal group, and the synchronization access signal group includes PSS, SSS, and PBCH signals.
  • the network side device 800 includes: a first sending module 801 and a second sending module 802, where:
  • the first sending module 801 is configured to send the PSS and the SSS respectively in the first time resource and the second time resource;
  • the second sending module 802 is configured to send the PBCH signal in a third time resource, where the first time resource, the second time resource, and the third time resource belong to the same frame, and
  • the PBCH signal includes the system frame number of the frame.
  • the system frame number in the PBCH signal is a complete system frame number.
  • the PBCH signal includes a primary system information block MIB, and the MIB includes the system frame number.
  • the first time resource, the second time resource, and the third time resource are attributed to the first subframe of the frame;
  • the network side device 800 further includes:
  • the third sending module 803 is configured to send the PSS and the SSS respectively in the fourth time resource and the fifth time resource;
  • the fourth sending module 804 is configured to send the PBCH signal in a sixth time resource, where the fourth time resource, the fifth time resource, and the sixth time resource belong to a second of the frame Subframe.
  • the first subframe of the frame is the first subframe of the frame
  • the second subframe of the frame is the fifth subframe of the frame
  • the first time resource includes a last orthogonal frequency division multiplexing OFDM symbol of a first slot slot of a first subframe of the frame
  • the second time resource includes a first subframe of the frame a second last OFDM symbol of the first slot
  • the third time resource includes a first four OFDM symbols of a second slot of a first subframe of the frame
  • the fourth time resource includes the frame a last OFDM symbol of the 1st slot of the 5th subframe
  • the fifth time resource includes a second to last OFDM symbol of the 1st slot of the 5th subframe of the frame
  • the sixth time resource includes The first four OFDM symbols of the second slot of the fifth subframe of the frame.
  • the first sending module 801 is specifically configured to send the PSS multiple times in a first time resource, and send the SSS multiple times in a second time resource;
  • the third sending module 803 is specifically configured to send the PSS multiple times in a fourth time resource, and send the SSS multiple times in a fifth time resource.
  • the first subframe of the frame is the first subframe of the frame
  • the second subframe of the frame is the fifth subframe of the frame
  • the first time resource includes first, third, fifth, and seventh OFDM symbols of a first slot of a first subframe of the frame
  • the second time resource includes the frame a second, fourth, and sixth OFDM symbol of a first slot of the first subframe
  • the third time resource including all OFDM symbols of a second slot of the first subframe of the frame
  • the fourth time resource includes first, third, fifth, and seventh OFDM symbols of a first slot of a fifth subframe of the frame
  • the fifth time resource includes a first of the frames a second, fourth, and sixth OFDM symbol of a first slot of five subframes
  • the sixth time resource including all OFDM symbols of a second slot of a fifth subframe of the frame
  • the first sending module 801 is specifically configured to send the PSS in the first, third, fifth, and seventh OFDM symbols of the first slot of the first subframe of the frame, respectively;
  • the third sending module 803 is specifically configured to send the PSS respectively in the first, third, fifth, and seventh OFDM symbols of the first slot of the fifth subframe of the frame;
  • the SSS is transmitted in the second, fourth, and sixth OFDM symbols of the first slot of the fifth subframe of the frame, respectively.
  • the second sending module 802 is specifically configured to send the PBCH signal by using multiple antenna ports in a third time resource.
  • the fourth sending module 804 is specifically configured to send the PBCH signal by using multiple antenna ports in the sixth time resource.
  • the second sending module 802 is configured to send the PBCH signal by using a plurality of antenna ports in a third time resource by using space frequency diversity or space time diversity.
  • the fourth sending module 804 is specifically configured to send the PBCH signal by using a plurality of antenna ports in a sixth time resource by using space frequency diversity or space time diversity.
  • the second sending module 802 is specifically configured to perform precoding on multiple PBCH information symbols in a third time resource, and send a precoding result by using multiple antenna ports;
  • the fourth sending module 804 is specifically configured to pre-code a plurality of PBCH information symbols in a sixth time resource, and send a precoding result by using multiple antenna ports.
  • the network side device 800 may be the network side device in any of the method embodiments in the embodiment of the disclosure, and any implementation manner of the network side device in the method embodiment in the embodiment of the disclosure It can be implemented by the above network side device 800 in this embodiment, and achieve the same beneficial effects, and details are not described herein again.
  • FIG. 10 is a structural diagram of a user terminal according to an embodiment of the present disclosure, which can implement details of a method for receiving a synchronization access signal group in the embodiment shown in FIG. 6 and FIG. 7, and achieve the same effect.
  • the user terminal is configured to synchronize reception of an access signal group, and the synchronization access signal group includes PSS, SSS, and PBCH signals.
  • the user terminal 1000 includes: a first search module 1001, a channel estimation module 1002, a first detection module 1003, a second detection module 1004, and a synchronization module 1005, where:
  • the first search module 1001 is configured to search for the PSS at a first time source
  • a channel estimation module 1002 configured to perform channel estimation by using the PSS, to obtain a channel estimation result
  • the first detecting module 1003 is configured to detect the SSS in the second time resource by using the channel estimation result
  • the second detecting module 1004 is configured to detect the PBCH signal in a third time resource, where the first time resource, the second time resource, and the third time resource belong to the same frame;
  • the synchronization module 1005 is configured to acquire a system frame number of the frame included in the PBCH signal, and perform frame synchronization using the system frame number.
  • the system frame number in the PBCH signal is a complete system frame number.
  • the PBCH signal includes a primary system information block (MIB), the MIB includes the system frame number, and the synchronization module 1005 is specifically configured to acquire the MIB included in the PBCH signal, from the MIB. Obtaining the system frame number and performing frame synchronization using the system frame number.
  • MIB primary system information block
  • the synchronization module 1005 is specifically configured to acquire the MIB included in the PBCH signal, from the MIB. Obtaining the system frame number and performing frame synchronization using the system frame number.
  • the first time resource, the second time resource, and the third time resource are attributed to the first subframe of the frame; as shown in FIG. 11, the user terminal 1000 further includes:
  • a second search module 1006, configured to search for the PSS in a fourth time resource
  • the third detecting module 1007 is configured to perform channel estimation by using the PSS searched by the fourth time resource, and use the channel estimation result of the channel estimation to detect the SSS in a fifth time resource;
  • the fourth detecting module 1008 is configured to detect the PBCH signal in a sixth time resource, where the fourth time resource, the fifth time resource, and the sixth time resource belong to a second of the frame Subframe.
  • the first subframe of the frame is the first subframe of the frame
  • the second subframe of the frame is the fifth subframe of the frame
  • the first time resource includes a last orthogonal frequency division multiplexing OFDM symbol of a first slot slot of a first subframe of the frame
  • the second time resource includes a first subframe of the frame a second last OFDM symbol of the first slot
  • the third time resource includes a first four OFDM symbols of a second slot of a first subframe of the frame
  • the fourth time resource includes the frame a last OFDM symbol of the 1st slot of the 5th subframe
  • the fifth time resource includes a second to last OFDM symbol of the 1st slot of the 5th subframe of the frame
  • the sixth time resource includes The first four OFDM symbols of the second slot of the fifth subframe of the frame.
  • the first search module 1001 is specifically configured to search the PSS multiple times in a first time resource
  • the first detecting module 1003 is specifically configured to use the channel estimation result to detect the SSS multiple times in a second time resource;
  • the second detecting module 1004 is specifically configured to detect the PBCH signal by using multiple antenna ports in a third time resource;
  • the second search module 1006 is specifically configured to search the PSS multiple times in a fourth time resource
  • the third detecting module 1007 is specifically configured to perform channel estimation by using the PSS searched by the fourth time resource, and use the channel estimation result of the channel estimation to detect the SSS multiple times in a fifth time resource. ;
  • the fourth detecting module 1009 is specifically configured to detect the PBCH signal by using multiple antenna ports in a sixth time resource.
  • the first subframe of the frame is the first subframe of the frame
  • the second subframe of the frame is the fifth subframe of the frame
  • the first time resource includes first, third, fifth, and seventh OFDM symbols of a first slot of a first subframe of the frame
  • the second time resource includes the frame a second, fourth, and sixth OFDM symbol of a first slot of the first subframe
  • the third time resource including all OFDM symbols of a second slot of the first subframe of the frame
  • the fourth time resource includes first, third, fifth, and seventh OFDM symbols of a first slot of a fifth subframe of the frame
  • the fifth time resource includes a first of the frames a second, fourth, and sixth OFDM symbol of a first slot of five subframes
  • the sixth time resource including all OFDM symbols of a second slot of a fifth subframe of the frame
  • the first search module 1001 is specifically configured to search for the PSS in the first, third, fifth, and seventh OFDM symbols of the first slot of the first subframe of the frame;
  • the first detecting module 1003 is specifically configured to detect, by using the channel estimation result, the second, fourth, and sixth OFDM symbols of the first slot of the first subframe of the frame, respectively.
  • SSS single-semiconductor sequence
  • the second search module 1006 is specifically configured to search for the PSS in the first, third, fifth, and seventh OFDM symbols of the first slot of the fifth subframe of the frame;
  • the third detecting module 1007 is specifically configured to perform channel estimation by using the PSS searched by the first, third, fifth, and seventh OFDM symbols of the first slot of the fifth subframe. And using the channel estimation result of the channel estimation, the SSS is detected in the second, fourth, and sixth OFDM symbols of the first slot of the fifth subframe of the frame, respectively.
  • the second detecting module 1004 is configured to detect the PBCH signal by using multiple antenna ports in a third time resource.
  • the fourth detecting module 1008 is specifically configured to detect the PBCH signal by using multiple antenna ports in the sixth time resource.
  • the second detecting module 1004 is configured to detect, by using a plurality of antenna ports, the PBCH signal by using space frequency diversity or space-time diversity in a third time resource;
  • the fourth detecting module 1008 is specifically configured to detect the PBCH signal by using a plurality of antenna ports in a sixth time resource by using space frequency diversity or space time diversity.
  • the user terminal 1000 may be a user terminal in any embodiment of the method in the embodiment of the disclosure, and any implementation manner of the user terminal in the method embodiment of the disclosure may be used in this embodiment.
  • the foregoing user terminal 1000 in the embodiment is implemented, and the same beneficial effects are achieved, and details are not described herein again.
  • FIG. 12 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 in the embodiment shown in FIG. 2 and FIG. 3, and achieve the same effect.
  • the synchronization access signal group includes PSS, SSS, and PBCH signals.
  • the network side device 1200 includes: a processor 1201, a transceiver 1202, a memory 1203, a user interface 1204, and a bus interface, where:
  • the processor 1201 is configured to read a program in the memory 1203 and perform the following process:
  • the PBCH signal Transmitting, by the third time resource, the PBCH signal, where the first time resource, the second time resource, and the third time resource belong to the same frame, and the PBCH signal includes the frame system Frame number.
  • the transceiver 1202 is configured to receive and transmit data under the control of the processor 1201.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1201 and various circuits of memory represented by memory 1203.
  • 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.
  • Transceiver 1202 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 1204 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 1201 is responsible for managing the bus architecture and general processing, and the memory 1203 can store data used by the processor 1201 in performing operations.
  • the system frame number in the PBCH signal is a complete system frame number.
  • the PBCH signal includes a primary system information block MIB, and the MIB includes the system frame number.
  • the first time resource, the second time resource, and the third time resource are attributed to the first subframe of the frame; the processor 1201 is further configured to:
  • the first subframe of the frame is the first subframe of the frame
  • the second subframe of the frame is the fifth subframe of the frame
  • the first time resource includes a last orthogonal frequency division multiplexing OFDM symbol of a first slot slot of a first subframe of the frame
  • the second time resource includes a first subframe of the frame a second last OFDM symbol of the first slot
  • the third time resource includes a first four OFDM symbols of a second slot of a first subframe of the frame
  • the fourth time resource includes the frame a last OFDM symbol of the 1st slot of the 5th subframe
  • the fifth time resource includes a second to last OFDM symbol of the 1st slot of the 5th subframe of the frame
  • the sixth time resource includes The first four OFDM symbols of the second slot of the fifth subframe of the frame.
  • the sending by the processor 1201, the first time resource and the second time resource, respectively, sending the PSS and the SSS, including:
  • the transmitting the PSS and the SSS by using the fourth time resource and the fifth time resource that are executed by the processor 1201 include:
  • the PSS is sent multiple times in the fourth time resource, and the SSS is sent multiple times in the fifth time resource.
  • the first subframe of the frame is the first subframe of the frame
  • the second subframe of the frame is the fifth subframe of the frame
  • the first time resource includes first, third, fifth, and seventh OFDM symbols of a first slot of a first subframe of the frame
  • the second time resource includes the frame a second, fourth, and sixth OFDM symbol of a first slot of the first subframe
  • the third time resource including all OFDM symbols of a second slot of the first subframe of the frame
  • the fourth time resource includes first, third, fifth, and seventh OFDM symbols of a first slot of a fifth subframe of the frame
  • the fifth time resource includes a first of the frames a second, fourth, and sixth OFDM symbol of a first slot of five subframes
  • the sixth time resource including all OFDM symbols of a second slot of a fifth subframe of the frame
  • the transmitting the PSS multiple times in the first time resource by the processor 1201 includes:
  • the transmitting, by the processor 1201, the SSS by using the second time resource to send the SSS multiple times includes:
  • the transmitting the PSS multiple times in the fourth time resource by the processor 1201 includes:
  • the SSS that is executed by the processor 1201 to send the SSS multiple times in the fifth time resource includes:
  • the SSS is transmitted in the second, fourth, and sixth OFDM symbols of the first slot of the fifth subframe of the frame, respectively.
  • the sending, by the processor 1201, the PBCH signal in the third time resource includes:
  • the processor 1201 transmitting, by the processor 1201, the PBCH signal in the sixth time resource, including:
  • the PBCH signal is transmitted using a plurality of antenna ports.
  • the transmitting, by using the multiple antenna ports, the PBCH signal by the processor 1201 includes:
  • the PBCH signal is transmitted using a plurality of antenna ports using space frequency diversity or space time diversity.
  • the performing, by using the multiple antenna ports, by the processor 1201, using the space frequency diversity or space-time diversity, to send the PBCH signal includes:
  • the network side device 1200 may be the network side device in any of the method embodiments in the embodiment of the disclosure, and any implementation manner of the network side device in the method embodiment in the embodiment of the disclosure It can be implemented by the above network side device 1200 in this embodiment, and achieve the same beneficial effects, and details are not described herein again.
  • FIG. 13 is a structural diagram of a user terminal according to an embodiment of the present disclosure, which can implement the details of the method for receiving a synchronization signal group in the embodiment shown in FIG. 6 and FIG. 7, and achieve the same effect, wherein
  • the sync access signal group includes PSS, SSS, and PBCH signals.
  • the user terminal 1300 includes at least one processor 1301, a memory 1302, at least one network interface 1304, and a user interface 1303.
  • the various components in terminal 1300 are coupled together by a bus system 1305.
  • the bus system 1305 is used to implement connection communication between these components.
  • the bus system 1305 includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • various buses are labeled as the bus system 1305 in FIG.
  • the user interface 1303 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 1302 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 1302 stores elements, executable modules or data structures, or a subset thereof, or their extended set: an operating system 13021 and an application 13022.
  • the operating system 13021 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 13022 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 13022.
  • the processor 1301 by calling the program or instruction stored in the memory 1302, specifically, the program or instruction stored in the application 13022, the processor 1301 is configured to:
  • the method disclosed in the above embodiments of the present disclosure may be applied to the processor 1301 or implemented by the processor 1301.
  • the processor 1301 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 1301 or an instruction in a form of software.
  • the processor 1301 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. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • 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 1302, and the processor 1301 reads the information in the memory 1302 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 (DSP), Digital Signal Processing Equipment (DSP Device, DSPD), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described herein In an electronic unit or a combination thereof.
  • ASICs Application Specific Integrated Circuits
  • DSP Digital Signal Processing
  • DSP Device Digital Signal Processing Equipment
  • PLD programmable Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • 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 system frame number in the PBCH signal is a complete system frame number.
  • the PBCH signal includes a main system information block (MIB), where the MIB includes the system frame number, and the system frame number that is included in the acquiring the PBCH signal, which is performed by the processor 1301, includes:
  • MIB main system information block
  • the first time resource, the second time resource, and the third time resource are attributed to the first subframe of the frame;
  • the method Before the step of acquiring, by the processor 1301, the system frame number of the frame included in the PBCH signal, and performing frame synchronization using the system frame number, the method further includes:
  • the first subframe of the frame is the first subframe of the frame
  • the second subframe of the frame is the fifth subframe of the frame
  • the first time resource includes a last orthogonal frequency division multiplexing OFDM symbol of a first slot slot of a first subframe of the frame
  • the second time resource includes a first subframe of the frame a second last OFDM symbol of the first slot
  • the third time resource includes a first four OFDM symbols of a second slot of a first subframe of the frame
  • the fourth time resource includes the frame a last OFDM symbol of the 1st slot of the 5th subframe
  • the fifth time resource includes a second to last OFDM symbol of the 1st slot of the 5th subframe of the frame
  • the sixth time resource includes The first four OFDM symbols of the second slot of the fifth subframe of the frame.
  • searching for the PSS in the first time resource performed by the processor 1301 includes:
  • the detecting, by the processor 1301, using the channel estimation result, detecting the SSS in a second time resource includes:
  • the searching for the PSS in the fourth time resource performed by the processor 1301 includes:
  • the performing, by the processor 1301, using the PSS searched by the fourth time resource to perform channel estimation, and using the channel estimation result of the channel estimation, detecting the SSS in the fifth time resource including:
  • Channel estimation is performed using the PSS searched at the fourth time resource, and the SSS is detected multiple times at a fifth time resource using the channel estimation result of the channel estimation.
  • the first subframe of the frame is the first subframe of the frame
  • the second subframe of the frame is the fifth subframe of the frame
  • the first time resource includes first, third, fifth, and seventh OFDM symbols of a first slot of a first subframe of the frame
  • the second time resource includes the frame a second, fourth, and sixth OFDM symbol of a first slot of the first subframe
  • the third time resource including all OFDM symbols of a second slot of the first subframe of the frame
  • the fourth time resource includes first, third, fifth, and seventh OFDM symbols of a first slot of a fifth subframe of the frame
  • the fifth time resource includes a first of the frames a second, fourth, and sixth OFDM symbol of a first slot of five subframes
  • the sixth time resource including all OFDM symbols of a second slot of a fifth subframe of the frame
  • the searching for the PSS multiple times in the first time resource performed by the processor 1301 includes:
  • the performing, by the processor 1301, using the channel estimation result, detecting the SSS multiple times in a second time resource including:
  • the searching for the PSS in the fourth time resource performed by the processor 1301 includes:
  • the performing, by the processor 1301, using the PSS searched by the fourth time resource to perform channel estimation, and using the channel estimation result of the channel estimation, detecting the SSS multiple times in a fifth time resource including:
  • the second, fourth, and sixth OFDM symbols of the first slot of the fifth subframe of the frame are respectively detected by the SSS.
  • the detecting, by the processor 1301, the PBCH signal in the third time resource including:
  • the detecting, by the processor 1301, the PBCH signal in the sixth time resource including:
  • the PBCH signal is detected using a plurality of antenna ports.
  • the detecting, by the processor 1301, using the multiple antenna ports to detect the PBCH signal includes:
  • the PBCH signal is detected by space frequency diversity or space time diversity using a plurality of antenna ports.
  • the user terminal 1300 may be a user terminal in any embodiment of the method in the embodiment of the disclosure, and any implementation manner of the user terminal in the method embodiment of the disclosure may be used in this embodiment.
  • the foregoing user terminal 1300 in the embodiment is implemented, and the same beneficial effects are achieved, and details are not described herein again.
  • 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, a portion of the technical solution of the present disclosure that contributes in essence or to the related art or a part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present disclosure.
  • 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.

Abstract

La présente invention concerne des procédés d'émission et de réception d'un bloc de signaux de synchronisation, un dispositif associé et un système. Le procédé comprend : l'émission respective d'un signal de synchronisation primaire (PSS) et d'un signal de synchronisation secondaire (SSS) dans des première et deuxième ressources temporelles ; et l'émission d'un signal de canal physique de diffusion (PBCH) dans une troisième ressource temporelle, les première, deuxième et troisième ressources temporelles appartenant à la même trame, et le signal de PBCH comprenant un numéro de trame système de la trame.
PCT/CN2018/078849 2017-03-23 2018-03-13 Procédés d'émission et de réception d'un bloc de signaux de synchronisation, dispositif associé et système WO2018171469A1 (fr)

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CN201710177631.4 2017-03-23

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