Wireless communication methods, network devices, and terminal devices

Abstract

To provide a wireless communication method, a network device, and a terminal device that improve communication characteristics in terms of SS block transmission.SOLUTION: A method in a wireless communication system includes: a network device occupying a first bandwidth in N (N is an integer equal to or greater than 1) first codes, and transmitting a first channel or signal included in a synchronization signal block to a terminal device; and the network device occupying a second bandwidth in M (M is an integer equal to or greater than 1) second codes, and occupying a third bandwidth in S (S is an integer equal to or greater than 1) first codes among the N first codes, and transmitting a second channel or signal included in the synchronization signal block to the terminal device. The frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap each other.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communications, and more specifically, relates to a wireless communication method, a network device, and a terminal device. BACKGROUND ART

[0002] Currently, in Long Term Evolution (LTE) systems, signals for synchronization are a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), and a reference signal on which a terminal device performs Radio Resource Management (RRM) measurement is a Cell Reference Signal (CRS) or a Channel State Information Reference Signal (CSI-RS).

[0003] In New Radio (NR) systems, a network device may transmit a plurality of Synchronization Signal Blocks (SS blocks) to a terminal device, and the terminal device may search for the SS blocks within a system bandwidth to obtain a cell Identifier (ID) for time and frequency synchronization, obtain Physical Broadcasting Channel (PBCH) information, and perform RRM measurement based on the SSS and the Demodulation Reference Signal (DMRS) of the PBCH.

[0004] In New Radio systems, the requirements for communication performance are high, and therefore, how to improve communication performance in the aspect of SS Block transmission has become an urgent problem to be solved. SUMMARY OF THE INVENTION [Problems that the invention aims to solve]

[0005] The embodiments of this application provide a wireless communication method and apparatus that can improve communication characteristics in terms of SS Block transmission. [Means for solving the problem]

[0006] A wireless communication method relating to the first side, The network device occupies the first bandwidth with N first codes and transmits a first channel or signal included in a synchronization signal block to a terminal device, where N is an integer of 1 or more; and the network device occupies the second bandwidth with M second codes and occupies the third bandwidth with S first codes out of the N first codes and transmits a second channel or signal included in a synchronization signal block to a terminal device, where the frequency domain resource locations of the first bandwidth and the third bandwidth do not overlap, and M and S are integers of 1 or more.

[0007] Accordingly, in the embodiments of the present application, the second channel or signal can be transmitted in the code that transmits the first channel or signal, and the overall bandwidth occupied by the synchronization signal block can be reduced. This reduces the number of initial searches without the need to significantly reduce the transmission resources for the second channel or signal, and thus reduces or avoids the impact on the transmission characteristics of the second channel or signal due to the reduction in the bandwidth of the synchronization signal block, thereby improving communication characteristics.

[0008] Refer to the first plane, in possible implementations of the first plane, the first channel or signal includes a primary synchronization signal (PSS) and / or a secondary synchronization signal (SSS).

[0009] Referring to the first plane or any of the possible implementations described above, in another possible implementation of the first plane, the first channel or signal includes PSS and SSS, and the first codes occupied by PSS and SSS are different.

[0010] Refer to the first plane or any of the possible implementations described above, in another possible implementation of the first plane, the second channel or signal includes a physical broadcast channel (PBCH).

[0011] Referring to the first face or any of the possible realizations described above, in another possible realization of the first face, the sum of the bandwidths of the first and third bandwidths is less than or equal to the second bandwidth.

[0012] Referring to the first plane or any of the possible realizations described above, in another possible realization of the first plane, the frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are each subsets of the frequency domain resource locations occupied by the second bandwidth.

[0013] Referring to the first face or any of the possible realizations described above, in another possible realization of the first face, the center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth.

[0014] Referring to the first face or any of the possible realizations described above, in another possible realization of the first face, the frequency domain resource locations of the third bandwidth are located on both sides of the frequency domain resource locations of the first bandwidth.

[0015] Refer to the first plane or any of the possible realizations described above, in another possible realization of the first plane, the frequency domain resource location of the first bandwidth is located within the low frequency range of the second bandwidth, and The resource location in the third bandwidth's frequency domain is situated within the high-frequency range of the second bandwidth.

[0016] Refer to the first plane or any of the possible realizations described above, in another possible realization of the first plane, the frequency domain resource location of the first bandwidth is located within the high frequency range of the second bandwidth, and The resource location in the third bandwidth's frequency domain is situated within the low-frequency range of the second bandwidth.

[0017] Refer to the first plane or any of the possible implementations described above, in another possible implementation of the first plane, the first bandwidth, the second bandwidth, and / or the third bandwidth are each equal to the bandwidth occupied by an integer number of physical resource blocks (PRBs).

[0018] Referring to the first face or any of the possible realizations described above, in another possible realization of the first face, the second bandwidth is smaller than the bandwidth occupied by the 24 PRBs.

[0019] Referring to the first face or any of the possible implementations described above, in another possible implementation of the first face, the second bandwidth is equal to the bandwidth occupied by the 18 PRBs.

[0020] Referring to the first face or any of the possible realizations described above, in another possible realization of the first face, the first bandwidth is equal to the bandwidth occupied by the 12 PRBs.

[0021] Refer to the first face or any of the possible realizations described above, in another possible realization of the first face, S is equal to N.

[0022] Refer to the first face or any of the possible realizations described above, in another possible realization of the first face, N is equal to 2 and M is equal to 2, The order of the N first codes and M second codes in the time domain, based on their relative order, is first code, second code, first code, and second code.

[0023] Referring to the first plane or any of the possible implementations described above, in another possible implementation of the first plane, the network device occupies the second bandwidth in M ​​second codes and the third bandwidth in S first codes out of N first codes, and transmits the second channel or signal included in the synchronization signal block to the terminal device, The network device performs mapping of the second channel or signal based on a frequency-domain-first and time-domain-second scheme, starting from the first code among the N first codes and the M second codes, based on the sequential order of the N first codes and the M second codes in the time domain, such that low-frequency domain resources are prioritized and high-frequency domain resources are arranged subsequently, wherein the mapped bandwidth on the first code is a third bandwidth, and the mapped bandwidth on the second code is a second bandwidth; the network device transmitting the mapped second channel or signal to the terminal device.

[0024] A wireless communication method according to a second aspect, the terminal device obtaining, on the M second codes from the second bandwidth and on S first codes among the N first codes from the third bandwidth, the second channel or signal comprised in the synchronization signal block transmitted by the network device; the network device transmitting, on the N first codes with a first bandwidth, the first channel or signal comprised in the synchronization signal block; wherein frequency domain resource positions of the third bandwidth and the first bandwidth do not overlap with each other, and M, N, and S are integers greater than or equal to 1.

[0025] Therefore, in the embodiments of the present application, the second channel or signal can be transmitted on the codes for transmitting the first channel or signal, the total bandwidth occupied by the synchronization signal block can be reduced, thereby reducing the number of initial searches without significantly reducing the transmission resources of the second channel or signal, and thus reducing or avoiding the impact on the transmission characteristics of the second channel or signal caused by reducing the bandwidth of the synchronization signal block, so that communication performance can be improved.

[0026] With reference to the second aspect, in a possible implementation of the second aspect, the first channel or signal includes a primary synchronization signal (PSS) and / or a secondary synchronization signal (SSS).

[0027] Refer to the second aspect or any of the possible implementations described above, in another possible implementation of the second aspect, the first channel or signal includes PSS and SSS, and the first codes occupied by PSS and SSS are different.

[0028] Refer to the second aspect or any of the possible implementations described above, in another possible implementation of the second aspect, the second channel or signal includes a physical broadcast channel (PBCH).

[0029] Refer to the second aspect or any of the possible realizations described above, in another possible realization of the second aspect, the sum of the bandwidths of the first and third bandwidths is less than or equal to the second bandwidth.

[0030] Referring to the second aspect or any of the possible implementations described above, in another possible implementation of the second aspect, the frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are each subsets of the frequency domain resource locations occupied by the second bandwidth.

[0031] Refer to the second aspect or any of the possible realizations described above, in another possible realization of the second aspect, the center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth.

[0032] Referring to the second aspect or any of the possible implementations described above, in another possible implementation of the second aspect, the frequency domain resource locations of the third bandwidth are located on both sides of the frequency domain resource locations of the first bandwidth.

[0033] Referring to the second aspect or any of the possible realizations described above, in another possible realization of the second aspect, the frequency domain resource location of the first bandwidth is located within the low frequency range of the second bandwidth, and The resource location in the third bandwidth's frequency domain is situated within the high-frequency range of the second bandwidth.

[0034] Refer to the second aspect or any of the possible realizations described above, in another possible realization of the second aspect, the frequency domain resource location of the first bandwidth is located within the high frequency range of the second bandwidth, and The resource location in the third bandwidth's frequency domain is situated within the low-frequency range of the second bandwidth.

[0035] Refer to the second aspect or any of the possible implementations described above, in another possible implementation of the second aspect, the first bandwidth, the second bandwidth and / or the third bandwidth are each equal to the bandwidth occupied by an integer number of physical resource blocks (PRBs).

[0036] Referring to the second approach or any of the possible implementations described above, in another possible implementation of the second approach, the second bandwidth is smaller than the bandwidth occupied by the 24 PRBs.

[0037] Refer to the second approach or any of the possible implementations described above, in another possible implementation of the second approach, the second bandwidth is equal to the bandwidth occupied by 18 physical resource blocks (PRBs).

[0038] Referring to the second approach or any of the possible implementations described above, in another possible implementation of the second approach, the first bandwidth is equal to the bandwidth occupied by the 12 PRBs.

[0039] Refer to the second approach or any of the possible realizations described above, in another possible realization of the second approach, S is equal to N.

[0040] Refer to the second aspect or any of the possible realizations described above, in another possible realization of the second aspect, N is equal to 2, M is equal to 2, The order of the N first codes and M second codes in the time domain, based on their relative order, is first code, second code, first code, and second code.

[0041] Referring to the second aspect or any of the possible implementations described above, in another possible implementation of the second aspect, the terminal device obtains the second channel or signal included in the synchronization signal block transmitted by the network device from the second bandwidth in M ​​second codes and from the third bandwidth in S first codes out of N first codes. Based on a method where the terminal device is in the frequency domain first and the time domain second, the process starts with the first of N first codes and M second codes, and based on the order of the N first codes and M second codes in the time domain, the second channel or signal is demapped so that low-frequency domain resources are prioritized and high-frequency domain resources are prioritized, and the bandwidth demapped in the first code is the third bandwidth, and the bandwidth demapped in the second code is the second bandwidth.

[0042] A network device relating to a third party, configured to perform a method in the first party or any possible implementation of the first party. Specifically, the network device includes a functional module for performing a method in the first party or any possible implementation of the first party.

[0043] A terminal device relating to the fourth aspect, configured to perform the method in the second aspect or any possible implementation of the second aspect. Specifically, the terminal device includes a functional module used in the method in the second aspect or any possible implementation of the second aspect.

[0044] A network device relating to the fifth aspect, including a processor, memory, and transceiver. The processor, memory, and transceiver communicate with each other via an internal connection path, transmitting control and / or data signals, thereby enabling the network device to perform the methods of the first aspect or any possible implementation of the first aspect.

[0045] A terminal device relating to the sixth aspect, comprising a processor, memory, and transceiver. The processor, memory, and transceiver communicate with each other via an internal connection path, transmitting control and / or data signals, thereby enabling the terminal device to perform the methods of the second aspect or any possible implementation of the second aspect.

[0046] A computer-readable medium relating to the seventh aspect, configured to store a computer program, wherein the computer program is used to execute the above-mentioned method or includes commands in any possible implementation.

[0047] A computer program product that includes commands relating to the eighth aspect, which, when executed on a computer, causes the computer to execute the methods described above in any of the above-mentioned methods or any possible implementations. [Brief explanation of the drawing]

[0048] [Figure 1] Figure 1 is a schematic diagram of a wireless communication system relating to an embodiment of the present invention.

[0049] [Figure 2] Figure 2 is a schematic flowchart of the wireless communication method relating to an embodiment of the present invention.

[0050] [Figure 3] Figure 3 is a schematic diagram of the transmission method of the synchronization signal block according to an embodiment of the present invention.

[0051] [Figure 4] Figure 4 is a schematic diagram of the transmission method of the synchronization signal block according to an embodiment of the present invention.

[0052] [Figure 5] Figure 5 is a schematic diagram of the transmission method of the synchronization signal block according to an embodiment of the present invention.

[0053] [Figure 6] Figure 6 is a schematic diagram of the transmission method of the synchronization signal block according to an embodiment of the present invention.

[0054] [Figure 7] Figure 7 is a schematic diagram of the transmission method for the synchronization signal block.

[0055] [Figure 8] Figure 8 is a schematic block diagram of a network device relating to an embodiment of the present invention.

[0056] [Figure 9] Figure 9 is a schematic block diagram of a terminal device relating to an embodiment of the present invention.

[0057] [Figure 10] Figure 10 is a schematic block diagram of a system chip relating to an embodiment of the present invention.

[0058] [Figure 11] Figure 11 is a schematic block diagram of a communication device relating to an embodiment of the present invention. [Modes for carrying out the invention]

[0059] The following describes the technical concepts in the embodiments of the present application with reference to the drawings of the embodiments. It is clear that the embodiments described are only a portion of the embodiments of the present application, not all of them. Any other embodiments that a person skilled in the art could conceive of based on the embodiments of the present application without requiring creative effort fall within the technical scope of the present application.

[0060] The technical proposal of the embodiment of this application is applicable to various communication systems, such as Global System of Mobile communication (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (GPRS), Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, or 5G systems.

[0061] Figure 1 shows a wireless communication system 100 to which an embodiment of the present invention is applied. The wireless communication system 100 may include a network device 110. The network device 100 may be a device that communicates with terminal devices. The network device 100 can provide communication coverage to a specific geographic area and can communicate with terminal devices (e.g., UEs) located within the coverage area. Preferably, the network device 100 may be a base transceiver station (BTS) in a GSM or CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolutionary Node B (eNB, or eNodeB) in an LTE system, or a radio controller in a Cloud Radio Access Network (CRAN), or the network device may be a relay station, access point, in-vehicle device, wearable device, network-side device in a 5G network, or network device in a future-developed terrestrial public mobile network (Public Land Mobile Network, PLMN), etc.

[0062] The wireless communication system 100 further includes at least one terminal device 120 located within the coverage range of the network device 110. The terminal device 120 may be mobile or fixed. Preferably, the terminal device 120 may refer to an access terminal, user equipment (UE), subscriber unit, subscriber station, mobile station, mobile body, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The access terminal may be a mobile phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device with wireless communication capabilities, computer or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device in a 5G network, or terminal device in a future-developed PLMN, etc.

[0063] Preferably, direct terminal communication (Device to Device, D2D) can be performed between terminal devices 120.

[0064] Preferably, the 5G system or network may be referred to as a New Radio (NR) system or network.

[0065] Figure 1 illustrates a network device and two terminal devices. Preferably, the wireless communication system 100 may include a plurality of network devices, and may include other numbers of terminal devices within the coverage area of ​​each network device. The embodiments of this application are not limited thereto.

[0066] Preferably, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, and the embodiments of the present application are not limited thereto.

[0067] In this text, it should be understood that the technical terms “system” and “network” are often used interchangeably. In this text, the technical terms “and / or” simply describe the relationship between related objects and indicate that three relationships are possible. For example, A and / or B can indicate three situations: A exists alone, A and B exist simultaneously, or B exists alone. Also, in this text, the letter “ / ” generally indicates that the preceding and following related objects are in an “or” relationship.

[0068] Figure 2 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. Preferably, the method 200 is applied to the system shown in Figure 1, but is not limited thereto. The method 200 includes at least some of the following:

[0069] In 210, the network device occupies the first bandwidth in N first codes and transmits the first channel or signal included in the synchronization signal block to the terminal device, where N is an integer of 1 or more.

[0070] Preferably, when N is greater than 1, the N first codes may be a continuous sequence of N codes or a discontinuous sequence of N codes.

[0071] Preferably, the first channel or signal includes PSS and / or SSS.

[0072] Preferably, the first channel or signal includes PSS and SSS, wherein the PSS and SSS occupy different first symbols.

[0073] For example, the first channel or signal includes a primary synchronization signal and a secondary synchronization signal, N is equal to 2, one code is used to transmit the primary synchronization signal and the other code is used to transmit the secondary synchronization signal, and there can be a one-code interval between the code used to transmit the primary synchronization signal and the code used to transmit the secondary synchronization signal.

[0074] Preferably, the frequency domain resources occupied by the first bandwidth may be continuous or discontinuous frequency domain resources.

[0075] Preferably, the first channel or signal refers to the channel or signal that occupies the first bandwidth in the first code, and may include channels or signals having the same bandwidth characteristics, or include certain types of channels or signals, and the granularity of classification can be determined according to the specific circumstances, and the embodiments of the present application are not limited thereto, for example, the first channel or signal is a synchronization signal, or the first channel or signal is a primary synchronization signal or a secondary synchronization signal.

[0076] Preferably, when N is greater than 1, the width and / or resource location of the first bandwidth occupied by each first code for transmitting the first channel or signal may be different from the width and / or resource location of the bandwidth occupied by at least one other first code for transmitting the first channel or signal.

[0077] For example, the first channel or signal includes a primary synchronization signal and a secondary synchronization signal, N is equal to 2, one code is used to transmit the primary synchronization signal and the other code is used to transmit the secondary synchronization signal, and the bandwidth and / or resource location occupied for transmitting the primary synchronization signal is different from the bandwidth and / or resource location occupied for transmitting the secondary synchronization signal.

[0078] Naturally, the width and / or resource location of the first bandwidth occupied for transmitting the first channel or signal may be the same for all N codes.

[0079] For example, the first channel or signal includes a primary synchronization signal and a secondary synchronization signal, N is equal to 2, one code is used to transmit the primary synchronization signal and the other code is used to transmit the secondary synchronization signal, and the bandwidth and / or resource location occupied for transmitting the primary synchronization signal is equal to the bandwidth and / or resource location occupied for transmitting the secondary synchronization signal.

[0080] Preferably, the first bandwidth is equal to the bandwidth occupied by an integer number of physical resource blocks (PRBs), for example, the first bandwidth is equal to the bandwidth occupied by 12 PRBs, and of course, it may be any other number, for example, the bandwidth occupied by 10 or 14 PRBs.

[0081] Preferably, in embodiments of the present application, the first channel or the first bandwidth occupied for transmitting a signal may include protective subcarrier spacing on both sides.

[0082] In 220, the network device occupies a second bandwidth with M second codes and a third bandwidth with S first codes out of the N first codes, and transmits a second channel or signal included in the synchronization signal block to the terminal device, the frequency domain resource locations of the first bandwidth and the third bandwidth do not overlap, and M and S are integers of 1 or more.

[0083] Preferably, N first codes and M second codes are arranged in an intersecting pattern.

[0084] For example, if N is equal to 2, and M is equal to 2, the order of the N first codes and M second codes in the time domain by their relative order is the first code, the second code, the first code, and the second code.

[0085] Preferably, when M is greater than 1, the M first codes may be M consecutive codes or M discontinuous codes.

[0086] Preferably, the first channel or signal includes a PBCH. Preferably, the PBCH referred to in the embodiments of this application may include a DMRS of the PBCH.

[0087] Preferably, the first channel or signal includes PSS but does not include SSS, meaning that PBCH may be transmitted only in codes that transmit PSS, and PBCH may not be transmitted in codes that transmit SSS.

[0088] Alternatively, the first channel or signal may include SSS but not PSS, meaning that PBCH may be transmitted only in the code that transmits SSS, and PBCH may not be transmitted in the code that transmits PSS.

[0089] Alternatively, the first channel or signal includes PSS and SSS, which means that PBCH can be transmitted in the code that transmits PSS and the code that transmits SSS.

[0090] While many parts of the embodiments of this application have been described as examples in which the first channel or signal includes PSS and / or SSS, and the second channel or signal includes PBCH, it should be understood that the embodiments of this application are not limited to this.

[0091] For example, the first channel or signal includes PSS and the second channel or signal includes SSS, or the first channel or signal includes SSS and the second channel or signal includes PSS, or the first channel or signal includes PBCH and the second channel or signal includes PSS and / or SSS.

[0092] Preferably, the frequency domain resources occupied by the second bandwidth may be continuous frequency domain resources or discontinuous frequency domain resources.

[0093] Preferably, the second channel or signal refers to a channel signal that occupies the second bandwidth in the second code and the third bandwidth in the first code, and may include channels or signals having the same bandwidth characteristics, or may include certain types of channels or signals, and the granularity of classification can be determined according to the specific circumstances, and the embodiments of the present application are not limited thereto.

[0094] Preferably, when M is greater than 1, the width and / or resource location of the second bandwidth occupied by each second code for transmitting the second channel or signal may differ from the width and / or resource location of the bandwidth occupied by at least one other second code for transmitting the second channel or signal.

[0095] Naturally, the width and / or resource location of the second bandwidth occupied for transmitting the second channel or signal may be the same for the M second codes.

[0096] Preferably, when S is greater than 1, the width and / or resource location of the third bandwidth occupied by each of the S first codes for transmitting the second channel or signal may be different from the width and / or resource location of the bandwidth occupied by at least one other first code for transmitting the second channel or signal.

[0097] Naturally, the width and / or resource location of the second bandwidth occupied for transmitting the second channel or signal may be the same for S first codes.

[0098] Preferably, S is less than or equal to N.

[0099] If the first channel or signal includes PSS and SSS, the second channel or signal is PBCH, and N is equal to 2, then S being less than N means that codes occupied by PSS only or SSS only are used to transmit PBCH.

[0100] Preferably, the second bandwidth is equal to the bandwidth occupied by an integer number of PRBs.

[0101] Preferably, the second bandwidth is smaller than the bandwidth occupied by 24 PRBs, for example, equal to the bandwidth occupied by 18 PRBs, and of course, it may be any other number, for example, equal to the bandwidth occupied by 20, 16, or other PRBs.

[0102] Preferably, the third bandwidth is equal to the bandwidth occupied by an integer number of PRBs.

[0103] Preferably, the third bandwidth is equal to the bandwidth occupied by the six PRBs, but of course, it may be any other number, for example, equal to the bandwidth occupied by five, four, or other PRBs.

[0104] Preferably, in embodiments of the present application, the second channel or the second bandwidth occupied for transmitting a signal may include the protective subcarrier spacing on both sides.

[0105] Preferably, in embodiments of the present application, the second channel or third bandwidth occupied for transmitting a signal may include protective subcarrier spacing on both sides.

[0106] In step 230, the terminal device acquires the first channel or signal included in the synchronization signal block transmitted by the network device with the first bandwidth in N first codes.

[0107] Specifically, the terminal device can perform blind detection on N first codes, thereby obtaining the first channel or signal that the network device transmits in the first bandwidth, such as PSS and SSS.

[0108] In 240, the terminal device acquires the second channel or signal included in the synchronization signal block transmitted by the network device from the second bandwidth in M ​​second codes and from the third bandwidth in S first codes out of the N first codes.

[0109] As a result, after the terminal device acquires the first channel or signal and the second channel or signal, it can acquire a cell identifier (ID), perform time-frequency synchronization, acquire physical broadcasting channel (PBCH) information, or perform RRM measurement based on the demodulation reference signal (DMRS) of the SSS and PBCH.

[0110] Preferably, the network device can transmit multiple SS Blocks, and the multiple SS Blocks can constitute a Synchronisation Signal Burst Set (SS Burst Set). Each of the multiple SS Blocks can transmit using multiple transmit beams, and the transmit beam of each SS Block is different from the transmit beam of the other SS Blocks.

[0111] Preferably, the sum of the bandwidths of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth.

[0112] For example, if the second bandwidth is X and the first bandwidth is Y, then the third bandwidth may be less than or equal to XY, that is, in N first codes, the bandwidth Y for transmitting the first channel or signal is such that in S codes among the N first codes, the bandwidth for transmitting the second channel or signal is less than or equal to XY, and in the second code, the bandwidth for transmitting the second channel or signal is X.

[0113] When S is less than N, in the other codes of the N first codes, excluding S first codes, the remaining XY bandwidth may transmit non-first channels or signals and other channels or signals other than the non-second channels or signals, and may not transmit any channels or signals.

[0114] Preferably, the frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are subsets of the frequency domain resource locations occupied by the second bandwidth. In this case, preferably, the center frequency point of the second bandwidth may be referred to as the center frequency point of the synchronization signal block.

[0115] The frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth may be equal to the frequency domain resource locations occupied by the second bandwidth, or they may be a subset of the frequency domain resource locations occupied by the second bandwidth.

[0116] Preferably, the center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth. In this case, the frequency domain resource locations of the third bandwidth may be located on both sides of the frequency domain resource locations of the first bandwidth. In this case, preferably, the sum of the bandwidths of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth.

[0117] For example, if the first channel or signal includes PSS and SSS, the second channel or signal includes PBCH, the second bandwidth is X, and the first bandwidth is Y, then within the SS block, a surplus bandwidth of (XY) / 2 bandwidth remains on both sides of the code transmitting PSS and SSS. Except for the code that transmits only PBCH, both sides of the surplus bandwidth in the PSS / SSS code are used to transmit PBCH.

[0118] For example, as shown in Figure 3, in an SS block, the bandwidth of the PBCH in a code that transmits only the PBCH is 18 PRBs, but the bandwidth occupied by PSS and SSS is 12 PRBs each, and the center frequency points of the 12 PRBs occupied by PSS and SSS are the center frequency points of the SS block. This leaves 3 PRBs on each side of PSS and 3 PRBs on each side of SSS, and these remaining PRBs can be used to transmit the PBCH.

[0119] It should be understood that when the center frequency point of the first bandwidth is equal to the center frequency point of the second bandwidth, the frequency domain resource location of the third bandwidth may be located further to one side of the frequency domain resource location of the first bandwidth, and the other side may transmit channels or signals of non-first channels or signals and non-second channels or signals, and may not transmit any channels or signals. Preferably, the location of the frequency domain resource in the third bandwidth is located within the low frequency range of the second bandwidth, and the location of the frequency domain resource in the first bandwidth is located within the high frequency range of the second bandwidth, in which case the frequency range of the third bandwidth is smaller than the frequency range of the first bandwidth.

[0120] In this case, preferably, the lowest frequency domain resource position of the third bandwidth may be equal to the lowest frequency domain resource position of the second bandwidth, and the highest frequency domain resource position of the first bandwidth may be equal to the highest frequency domain resource position of the second bandwidth. For example, if the first channel or signal includes PSS and SSS, the second channel or signal includes PBCH, the second bandwidth is X, and the first bandwidth is Y, then within the SS block, a surplus bandwidth of (XY) bandwidth remains on one side of the transmitted PSS and SSS codes. Except for codes that transmit only PBCH, the surplus bandwidth on one side of the codes that transmit PSS and SSS is used to transmit PBCH.

[0121] As shown in Figure 4, in a code that transmits only PBCH within an SS block, the bandwidth of the PBCH is 18 PRBs, while the bandwidth occupied by PSS / SSS is 12 PRBs (including the protective subcarriers on both sides of PSS and SSS). In a code that transmits PSS and SSS, if the 12 PRBs occupied by PSS and SSS are located within the high-frequency range of the SS block, 6 PRBs remain within the low-frequency range of the SS block, and these remaining PRBs are all used to transmit PBCH.

[0122] Preferably, the frequency domain resource locations of the first bandwidth are located within the low frequency range of the second bandwidth, and the frequency domain resource locations of the third bandwidth are located within the high frequency range of the second bandwidth.

[0123] For example, if the first channel or signal includes PSS and SSS, the second channel or signal includes PBCH, the second bandwidth is X, and the first bandwidth is Y, then within the SS block, a surplus bandwidth of (XY) bandwidth is left on one side of the code that transmits PSS and SSS. Excluding the code that transmits only PBCH, the bandwidth left on one side of the code that transmits PSS and SSS is used to transmit PBCH.

[0124] As shown in Figure 5, in a code that transmits only PBCH within an SS block, the bandwidth of the PBCH is 18 PRBs, while the bandwidth occupied by PSS / SSS is 12 PRBs (including the protective subcarriers on both sides of PSS and SSS). In a code that transmits PSS and SSS, if the 12 PRBs occupied by PSS and SSS are located within the low-frequency range of the SS block, 6 PRBs remain within the high-frequency range of the SS block, and all of these remaining PRBs are used to transmit PBCH.

[0125] Preferably, the network device performs mapping of the second channel or signal based on a frequency-first-frequency-domain-later-time-domain scheme, starting with the first of the N first codes and M second codes, and mapping the second channel or signal based on the time domain order of the N first codes and M second codes so that low-frequency domain resources come first and high-frequency domain resources come second, the bandwidth mapped in the first code is the third bandwidth, the bandwidth mapped in the second code is the second bandwidth, and the network device transmits the mapped second channel or signal to the terminal device. Accordingly, the terminal device performs demapping of the second channel or signal based on a frequency-first-frequency-domain-later-time-domain scheme, starting with the first of the N first codes and M second codes, and mapping the second channel or signal based on the time domain order of the N first codes and M second codes so that low-frequency domain resources come first and high-frequency domain resources come second, the bandwidth demapping in the first code is the third bandwidth, and the bandwidth demapping in the second code is the second bandwidth.

[0126] For example, as shown in Figure 6, PBCH mapping is performed in the frequency band in which the PBCH described above can be transmitted, based on a method of first-frequency domain followed by time domain.

[0127] For example, using Figure 6 as an example, PBCH can perform mapping based on a method where the frequency domain comes first, followed by the time domain (starting with the first code, the low-frequency domain bandwidth comes first, then the high-time domain bandwidth comes second, and then subsequent codes operate in this manner). That is, mapping is performed based on the order of the PBCH1-PBCH2-PBCH3-PBCH4-PBCH5-PBCH6 bandwidths in Figure 6, and the bandwidth of each part is also mapped based on the order from the low-frequency domain to the high-frequency domain.

[0128] In the embodiments of this application, mapping may be performed based on a method that prioritizes the time domain or the frequency domain, or, when performing frequency domain mapping, mapping may be performed based on a method that involves high-frequency mapping followed by high-frequency mapping again. When a terminal device performs a cell search in a bandwidth, the value of the synchronous channel raster of the cell search is related to the terminal's bandwidth and also to the bandwidth occupied by the SS block. Therefore, the larger the bandwidth occupied by the SS block, the smaller the value of the synchronous channel raster of the resulting cell search.

[0129] Accordingly, in the embodiments of the present application, the second channel or signal can be transmitted in the code that transmits the first channel or signal, and the overall bandwidth occupied by the synchronization signal block can be reduced. This reduces the number of initial searches without the need to significantly reduce the transmission resources for the second channel or signal, and thus reduces or avoids the impact on the transmission characteristics of the second channel or signal due to the reduction in the bandwidth of the synchronization signal block, thereby improving communication characteristics.

[0130] For example, if the first channel or signal includes PSS and SSS, and the second channel or signal is PBCH, the sequence length of PSS and SSS is 127, requiring the use of 12 PRBs and 127 REs, while the PBCH channel requires the use of 24 PRBs and 288 REs. As shown in Figure 7, if PSS and SSS are transmitted in the first and third codes respectively, and only PBCH is transmitted in the second and fourth codes, the bandwidth occupied by the SS Block is the bandwidth occupied by 24 PRBs. As shown in Figure 3-6, if PBCH is transmitted using 6 PRBs in the first and third codes, the bandwidth of the SS Block is 18 PRBs. This reduces the bandwidth of the SS Block, thereby avoiding a reduction in the resources occupied by the PBCH, and thus improving communication characteristics.

[0131] Although the above description assumes that the first channel or signal and the second channel or signal are channels or signals included in a synchronization signal block, the embodiments of this application are not limited to this. The first channel or signal and the second channel or signal may also be channels or signals included in a synchronization signal block. For example, the first channel or signal may be a Physical Downlink Control Channel (PDCCH) and the second channel or signal may be a Physical Downlink Shared Channel (PDSCH), or the first channel or signal and the second channel or signal may be other channels or signals.

[0132] Figure 8 is a schematic block diagram of a network device 300 according to an embodiment of the present invention. As shown in Figure 8, the network device 300 includes a first transmission unit 310 and a second transmission unit 320, wherein the first transmission unit 310 occupies a first bandwidth with N first codes and transmits a first channel or signal included in a synchronization signal block to a terminal device, and N is an integer of 1 or more. The second transmission unit 320 occupies a second bandwidth with M second codes and occupies a third bandwidth with S first codes out of the N first codes and transmits a second channel or signal included in the synchronization signal block to the terminal device, wherein the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap with each other, and M and S are integers of 1 or more.

[0133] It should be understood that the network device 600 can correspond to the network device in method 200 and can perform the corresponding operations that the network device in method 200 performs, and that for the sake of brevity, the explanation is omitted here.

[0134] Figure 9 is a schematic block diagram of a terminal device 400 according to an embodiment of the present invention. As shown in Figure 9, the terminal device 400 includes an acquisition unit 410, which acquires a second channel or signal included in the synchronization signal block transmitted by the network device from a second bandwidth in M ​​second codes and from a third bandwidth in S first codes out of the N first codes, and the network device transmits a first channel or signal included in the synchronization signal block in a first bandwidth in the N first codes, and the frequency domain resource positions of the third bandwidth and the first bandwidth do not overlap with each other, and M, N and S are integers of 1 or more.

[0135] Preferably, the acquisition unit 410 can further perform operations in 230 to acquire the first channel or signal.

[0136] It should be understood that the terminal device 400 can correspond to the terminal device in method 200 and can perform the corresponding operations that the terminal device in method 200 performs, and that for the sake of brevity, the explanation is omitted here.

[0137] Figure 10 is a schematic diagram of one system chip 500 of an embodiment of the present application. The system chip 500 in Figure 10 includes an input interface 501 and an output interface 502, and the processor 503 and memory 504 are connected via an internal communication connection line, and the processor 503 is used to execute code in the memory 504.

[0138] Preferably, when the code is executed, the processor 503 implements a method executed by a network device in an embodiment of the method. For brevity, a detailed explanation is omitted here.

[0139] Preferably, when the code is executed, the processor 503 implements a method executed by a terminal device in an embodiment of the method. For brevity, a detailed explanation is omitted here.

[0140] Figure 11 is a schematic block diagram of a communication device 600 according to an embodiment of the present application. As shown in Figure 11, the communication device 600 includes a processor 610 and a memory 620. The memory 620 can store program code, and the processor 610 can execute the program code stored in the memory 620.

[0141] Preferably, as shown in Figure 11, the communication device 600 may include a transceiver 630, and the processor 610 can control the transceiver 630 to communicate with the outside.

[0142] Preferably, the processor 610 can call program code stored in memory 620 to perform the corresponding operation of the network device in the embodiment of the method, which is omitted here for brevity.

[0143] Preferably, the processor 610 can call program code stored in memory 620 to perform the corresponding operation of the terminal device in the embodiment of the method, which will be omitted here for brevity.

[0144] It should be understood that the processor in the embodiments of this application may be an integrated circuit chip and has signal processing capabilities. In the implementation process, each step of the embodiments of the above method can be completed by hardware integrated logic circuits or software commands in the processor. The processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component. Each method, step and logic block diagram disclosed in the embodiments of this application is implementable or executable. The general-purpose processor may be a microprocessor, or the processor may be any ordinary processor, etc. The steps referring to the methods disclosed in the embodiments of this application may be directly embodied as being executed and completed by a hardware decode processor, or by being executed and completed by a combination of hardware and software modules in the decode processor. The software modules may reside in mature storage media of the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers, etc. The storage medium is located in memory, and the processor reads the information in memory and combines it with the hardware to complete the steps of the above method.

[0145] It is understood that the memory in the embodiments of this application may be volatile memory, non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), or flash memory. Volatile memory may be random access memory (RAM), which is used as external cache memory. By illustrative but non-limiting descriptions, many forms of RAM can be used, such as static random access memory (Static RAM, SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous-connected dynamic random access memory (Synchlink DRAM, SLDRAM), and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein includes, but is not limited to, these and any other suitable types of memory.

[0146] As those skilled in the art will see, the units and algorithmic steps of each example described with reference to the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether such functions are implemented in hardware or software depends on the specific application and design constraints of the proposed technology. While experts in the art may implement the described functions in different ways for each specific application, such implementations should not be considered beyond the scope of this application.

[0147] Those skilled in the art will clearly understand, for the sake of convenience and brevity of explanation, that the specific working processes of the above systems, apparatuses and units can be found by referring to the corresponding processes in the embodiments of the above methods, and therefore, such explanations are omitted here.

[0148] In some embodiments provided herein, it should be understood that the disclosed systems, apparatus and methods can be implemented in other ways. For example, the embodiments of the apparatus described above are merely schematic, and for example, the divisions of the units are merely divisions of logical functions and may have different distinctions when actually implemented, for example, multiple units or components may be combined, or integrated into another system, or certain features may be ignored or not performed. On the other hand, the mutual couplings or direct couplings or communication connections shown or considered may use indirect couplings or communication connections of some interface, apparatus or unit, and may be of electrical, mechanical or other forms.

[0149] The units described as separation members may or may not be physically separated, and the members referred to as units may or may not be physical units, that is, they may be located in one place or distributed among multiple network units. The objectives of the solution of this embodiment can be achieved by selecting the locations or all of the units as needed.

[0150] Furthermore, each functional unit in each embodiment of the present application may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit.

[0151] The aforementioned functions may be implemented in the form of a software function unit and may be stored on a single computer-readable storage medium when sold or used as an independent product. Based on this understanding, the proposed technology of the present application, or any part of it that contributes to the prior art, or any part of the proposed technology may be embodied in the form of a software product, which is stored on a single storage medium and contains several commands that cause a single computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The storage medium includes various media capable of storing program code, such as USB memory, portable hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0152] The foregoing describes only specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any modifications or substitutions that a person skilled in the art can easily conceive of within the technical scope disclosed herein should be included in the scope of protection of this application. Accordingly, the scope of protection of this application shall be subject to the scope of protection of the claims.

Claims

1. A wireless communication method, The network device occupies a first bandwidth in N first symbols to transmit a first channel or signal included in a synchronization signal block to a terminal device, wherein N is 2, and the first channel or signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), and of the two first symbols, one is for transmitting the PSS and the other is for transmitting the SSS. The network device transmits a second channel or signal included in the synchronization signal block to the terminal device by occupying a second bandwidth in M ​​second symbols and a third bandwidth in S first symbols out of the N first symbols, wherein M is 2, S is 1, the second channel or signal includes a physical broadcast channel (PBCH), the frequency domain resource locations of the first bandwidth and the third bandwidth do not overlap, and the time domain order of the two first symbols and the two second symbols is first symbol, second symbol, first symbol, second symbol, and so on. The sum of the bandwidths of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth, and the second bandwidth is smaller than the bandwidth occupied by the 24 PRBs. Wireless communication method.

2. The second bandwidth is X, the first bandwidth is Y, and in the symbols other than S of the N first symbols, no channel or signal is transmitted in the remaining X-Y bandwidth. The N first symbols are characterized in that the width and / or resource location of the first bandwidth occupied for transmitting the first channel or signal are the same. The wireless communication method according to claim 1.

3. The frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are each a subset of the frequency domain resource locations occupied by the second bandwidth. The wireless communication method according to claim 1 or 2.

4. The third bandwidth's frequency domain resource locations are characterized by being located on both sides of the first bandwidth's frequency domain resource locations. The wireless communication method according to any one of claims 1 to 3.

5. The aforementioned second bandwidth is characterized by being equal to the bandwidth occupied by 18, 20, or 16 PRBs. The wireless communication method according to any one of claims 1 to 4.

6. The PBCH is characterized by including a DMRS of the PBCH. The wireless communication method according to any one of claims 1 to 5.

7. The sequence length of the PSS is 127 and occupies 127 REs, the sequence length of the SSS is 127 and occupies 127 REs, and the PBCH occupies 576 REs. The wireless communication method according to any one of claims 1 to 6.

8. A wireless communication method, The terminal device includes acquiring a first channel or signal from a first bandwidth in N first symbols, and acquiring a second channel or signal from a second bandwidth in M ​​second symbols, and from a third bandwidth in S first symbols among the N first symbols, and the network device has a terminal device that acquires a first channel or signal from a first bandwidth in the network device that has a first synchronization signal block. The above N is 2, the first channel or signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), of the two first symbols, one is for acquiring the PSS and the other is for acquiring the SSS, the above M is 2, the above S is 1, the second channel or signal includes a physical broadcast channel (PBCH), the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap, and the time domain order of the two first symbols and the two second symbols is first symbol, second symbol, first symbol, second symbol. The sum of the bandwidths of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth, and the second bandwidth is smaller than the bandwidth occupied by the 24 PRBs. Wireless communication method.

9. The second bandwidth is X, the first bandwidth is Y, and in the symbols other than S of the N first symbols, no channel or signal is transmitted in the remaining X-Y bandwidth. The N first symbols are characterized in that the width and / or resource location of the first bandwidth occupied for transmitting the first channel or signal are the same. The wireless communication method according to claim 8.

10. The frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are each a subset of the frequency domain resource locations occupied by the second bandwidth. The wireless communication method according to claim 8 or 9.

11. The third bandwidth's frequency domain resource locations are characterized by being located on both sides of the first bandwidth's frequency domain resource locations. The wireless communication method according to any one of claims 8 to 10.

12. The aforementioned second bandwidth is characterized by being equal to the bandwidth occupied by 18, 20, or 16 PRBs. The wireless communication method according to any one of claims 8 to 11.

13. The PBCH is characterized by including a DMRS of the PBCH. The wireless communication method according to any one of claims 8 to 12.

14. The sequence length of the PSS is 127 and occupies 127 REs, the sequence length of the SSS is 127 and occupies 127 REs, and the PBCH occupies 576 REs. The wireless communication method according to any one of claims 8 to 13.

15. Network device, A first transmission unit configured to occupy a first bandwidth with N first symbols to transmit a first channel or signal included in a synchronization signal block to a terminal device, wherein N is 2, and the first channel or signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), and of the two first symbols, one is for transmitting the PSS and the other is for transmitting the SSS. A second transmission unit configured to transmit a second channel or signal included in the synchronization signal block to the terminal device by occupying a second bandwidth with M second symbols and a third bandwidth with S first symbols out of the N first symbols, wherein M is 2, S is 1, the second channel or signal includes a physical broadcast channel (PBCH), the frequency domain resource locations of the first bandwidth and the third bandwidth do not overlap, and the time domain order of the two first symbols and the two second symbols is first symbol, second symbol, first symbol, second symbol, The sum of the bandwidths of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth, and the second bandwidth is smaller than the bandwidth occupied by the 24 PRBs. Network device.

16. The second bandwidth is X, the first bandwidth is Y, and in the symbols other than S of the N first symbols, no channel or signal is transmitted in the remaining X-Y bandwidth. The N first symbols are characterized in that the width and / or resource location of the first bandwidth occupied for transmitting the first channel or signal are the same. The network device according to claim 15.

17. The frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are, respectively, subsets of the frequency domain resource locations occupied by the second bandwidth, and / or The third bandwidth's frequency domain resource locations are characterized by being located on both sides of the first bandwidth's frequency domain resource locations. The network device according to claim 15 or 16.

18. The aforementioned second bandwidth is characterized by being equal to the bandwidth occupied by 18, 20, or 16 PRBs. The network device according to any one of claims 15 to 17.

19. The PBCH includes the DMRS of the PBCH and / or, The sequence length of the PSS is 127 and occupies 127 REs, the sequence length of the SSS is 127 and occupies 127 REs, and the PBCH occupies 576 REs. A network device according to any one of claims 15 to 18.

20. A terminal device, including an acquisition unit, The acquisition unit is configured to acquire a first channel or signal included in the synchronization signal block transmitted by the network device from a first bandwidth in N first symbols, and to acquire a second channel or signal included in the synchronization signal block transmitted by the network device from a second bandwidth in M ​​second symbols, and from a third bandwidth in S first symbols out of the N first symbols. The above N is 2, the first channel or signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), of the two first symbols, one is for acquiring the PSS and the other is for acquiring the SSS, the above M is 2, the above S is 1, the second channel or signal includes a physical broadcast channel (PBCH), the frequency domain resource positions of the first bandwidth and the third bandwidth do not overlap, and the time domain order of the two first symbols and the two second symbols is first symbol, second symbol, first symbol, second symbol. The sum of the bandwidths of the first bandwidth and the third bandwidth is less than or equal to the second bandwidth, and the second bandwidth is smaller than the bandwidth occupied by the 24 PRBs. Terminal device.

21. The second bandwidth is X, the first bandwidth is Y, and in the symbols other than S of the N first symbols, no channel or signal is transmitted in the remaining X-Y bandwidth. The N first symbols are characterized in that the width and / or resource location of the first bandwidth occupied for transmitting the first channel or signal are the same. The terminal device according to claim 20.

22. The frequency domain resource locations occupied by the first bandwidth and the frequency domain resource locations occupied by the third bandwidth are, respectively, subsets of the frequency domain resource locations occupied by the second bandwidth, and / or The third bandwidth's frequency domain resource locations are characterized by being located on both sides of the first bandwidth's frequency domain resource locations. The terminal device according to claim 20 or 21.

23. The aforementioned second bandwidth is characterized by being equal to the bandwidth occupied by 18, 20, or 16 PRBs. The terminal device according to any one of claims 20 to 22.

24. The PBCH includes the DMRS of the PBCH and / or, The sequence length of the PSS is 127 and occupies 127 REs, the sequence length of the SSS is 127 and occupies 127 REs, and the PBCH occupies 576 REs. The terminal device according to any one of claims 20 to 23.

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