A communication access method and device

Abstract

An embodiment of the present invention discloses a method and device for communication access, the method comprising: a terminal device receives a synchronization signal and a system information signal generated based on a first subcarrier spacing from a network device; sends a random access request signal to the network device based on the second subcarrier spacing and a first transmission resource, wherein the type of the first transmission resource corresponds to a third subcarrier spacing and / or a fourth subcarrier spacing; receives a random access response signal generated based on the fourth subcarrier spacing from the network device, the random access response signal is used to indicate that the terminal device accesses the network or the random access response signal is used to indicate that the terminal device is ready to access the network. The method and device for communication access provided by the embodiment of the present invention can support cell search and random access in a network with multiple subcarrier spacings.

Description

Technical Field

[0001] The present invention relates to the field of communications, and in particular to a communication access method and device. Background Art

[0002] Traditional digital signal transmission is to transmit information streams through one channel at a time, which is a serial transmission method. Multi-carrier technology uses a parallel transmission method, which converts the serial high-speed information stream into multiple parallel low-speed information streams, and then superimposes multiple parallel low-speed information streams for transmission to form a transmission system with multiple carriers. In other words, multi-carrier technology is a technology that uses multiple carriers to transmit high-speed data information. Among them, the carrier is a radio wave of a specific frequency that carries data.

[0003] Multi-carrier transmission technology has been widely used in communication systems, such as 4G (the 4th Generation Mobile Communication) communication systems and IEEE (Institute of Electrical and Electronics Engineers) 802.11 series systems. In current communication systems, the services supported by each system are relatively unified, and each communication system only supports one waveform with subcarrier spacing. In the future 5G communication system, the service cell of the network equipment can support multiple subcarrier spacings, so that the service cell can use different subcarrier spacing signals to serve terminal devices with different needs in different services and different deployment scenarios.

[0004] However, how terminal devices access a network that uses multiple subcarrier spacing for communication is an urgent problem to be solved. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides a communication access method and device, which can solve the problem of how to access a network supporting multiple subcarrier spacing.

[0006] On the one hand, an embodiment of the present invention provides a method for communication access, the method comprising: a terminal device receives a synchronization signal and a system information signal generated based on a first subcarrier spacing from a network device, wherein the system information signal includes indication information for indicating a second subcarrier spacing, and the second subcarrier spacing is the subcarrier spacing used by the terminal device to send a random access request signal; the terminal device sends a random access request signal to the network device based on the second subcarrier spacing and a first transmission resource, wherein the type of the first transmission resource corresponds to a third subcarrier spacing and / or a fourth subcarrier spacing, the third subcarrier spacing is the subcarrier spacing used by the terminal device to send an uplink signal, and the fourth subcarrier spacing is the subcarrier spacing used by the terminal device to monitor a downlink signal; the terminal device receives a random access response signal generated based on the fourth subcarrier spacing from the network device, the random access response signal is used to indicate that the terminal device accesses the network or the random access response signal is used to indicate that the terminal device is preparing to access the network.

[0007] According to the communication access method of an embodiment of the present invention, after receiving the system information signal, the terminal device feeds back to the network device the subcarrier spacing used for transmitting uplink signals and / or the subcarrier spacing used for monitoring downlink signals determined by the terminal device, thereby supporting cell search and random access in a network with multiple subcarrier spacing.

[0008] Optionally, when the random access response signal indicates that the terminal device is ready to access the network, the random access response signal also includes indication information for indicating a second transmission resource, and the second transmission resource is used to transmit the uplink signal. The method also includes: the terminal device sends a signal including message 3 to the network device based on the second transmission resource and the third subcarrier spacing, and the message 3 includes identification information of the terminal device, so that the network device determines whether the terminal device can access the network based on the identification information; the terminal device receives an access confirmation signal generated based on the fourth subcarrier spacing from the network device, and the access confirmation signal is used to indicate that the terminal device and the network device access the network.

[0009] According to the communication access method of an embodiment of the present invention, the terminal device reports the identification information of the terminal device and requests the network device to determine whether the terminal device can access the network based on the identification information, thereby avoiding transmission conflicts when the terminal devices communicate in a scenario with a large number of terminal devices in the network.

[0010] Optionally, the method further includes: the terminal device receives configuration information from the network device, the configuration information is used to configure a fifth subcarrier spacing, and the fifth subcarrier spacing is the subcarrier spacing used by the terminal device after accessing the network, so as to support communication in a network with multiple subcarrier spacings.

[0011] Optionally, the configuration information is carried in the access confirmation signal, thereby reducing signaling overhead.

[0012] Optionally, the random access request signal includes a preamble sequence, and the type of the preamble sequence corresponds to the third subcarrier spacing and / or the fourth subcarrier spacing. Thus, the terminal device can flexibly select a method for indicating the subcarrier spacing used for transmitting an uplink signal and / or detecting a downlink signal.

[0013] On the other hand, an embodiment of the present invention provides a method for communication access, the method comprising: a network device sends a synchronization signal and a system information signal generated based on at least two subcarrier spacings, wherein the system information signal includes indication information for indicating a second subcarrier spacing, and the second subcarrier spacing is the subcarrier spacing used by the terminal device to send a random access request signal; the network device receives a random access request signal generated based on the second subcarrier spacing from the terminal device through a first transmission resource, wherein the type of the first transmission resource corresponds to a third subcarrier spacing and / or a fourth subcarrier spacing, the third subcarrier spacing is the subcarrier spacing used by the terminal device to send an uplink signal, and the fourth subcarrier spacing is the subcarrier spacing used by the terminal device to monitor a downlink signal; the network device sends a random access response signal generated based on the fourth subcarrier spacing to the terminal device, the random access response signal is used to indicate that the terminal device accesses the network or the random access response signal is used to indicate that the terminal device is preparing to access the network.

[0014] According to the communication access method of an embodiment of the present invention, the network equipment sends a synchronization signal and a system information signal generated based on at least two subcarrier spacings, and receives feedback from the terminal equipment on the subcarrier spacing used for transmitting uplink signals and / or the subcarrier spacing used for monitoring downlink signals determined by the terminal equipment, thereby supporting cell search and random access in a network with multiple subcarrier spacings.

[0015] Optionally, when the random access response signal indicates that the terminal device is ready to access the network, the random access response signal also includes indication information for indicating a second transmission resource, and the second transmission resource is used to transmit the uplink signal. The method also includes: the network device receives a signal including message 3 generated based on the third subcarrier spacing from the terminal device through the second transmission resource, and the message 3 includes identification information of the terminal device; the network device determines that the terminal device accesses the network based on the identification information; the network device sends an access confirmation signal to the terminal device based on the fourth subcarrier spacing, and the access confirmation signal is used to indicate that the terminal device accesses the network.

[0016] According to the communication access method of an embodiment of the present invention, a network device receives identification information of a terminal device reported by a terminal device, and determines whether the terminal device can access the network based on the identification information, thereby avoiding transmission conflicts when the terminal devices communicate in a scenario where there are many terminal devices in the network.

[0017] Optionally, the method further includes: the network device sends configuration information to the terminal device, the configuration information is used to configure a fifth subcarrier spacing, and the fifth subcarrier spacing is the subcarrier spacing used by the terminal device after accessing the network, so as to support communication in a network with multiple subcarrier spacings.

[0018] Optionally, the configuration information is carried in the access confirmation signal, thereby reducing signaling overhead.

[0019] Optionally, the fifth subcarrier spacing includes at least two subcarrier spacings. In this way, the UE can use resources corresponding to a variety of subcarrier spacings to increase the communication rate between the eNB and the UE.

[0020] Optionally, the random access request signal includes a preamble sequence, and the type of the preamble sequence corresponds to the third subcarrier spacing and / or the fourth subcarrier spacing. Thus, the terminal device can flexibly select a method for indicating the subcarrier spacing used for transmitting an uplink signal and / or detecting a downlink signal.

[0021] In another aspect, an embodiment of the present invention provides a terminal device, which can implement the functions performed by the terminal device in the method involved in the above aspects, and the functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0022] In one possible design, the structure of the terminal device includes a processor and a communication interface, and the processor is configured to support the terminal device to perform corresponding functions in the above method. The communication interface is used to support communication between the terminal device and other network elements. The terminal device may also include a memory, which is used to couple with the processor and store necessary program instructions and data for the terminal device.

[0023] In another aspect, an embodiment of the present invention provides a network device, which can implement the functions performed by the network device in the method involved in the above aspects, and the functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0024] In one possible design, the structure of the network device includes a processor and a communication interface, and the processor is configured to support the network device to perform the corresponding functions in the above method. The communication interface is used to support communication between the network device and other network elements. The network device may also include a memory, which is used to couple with the processor and store the necessary program instructions and data of the network device.

[0025] On the other hand, an embodiment of the present invention provides a communication system, which includes the terminal device and the network device described in the above aspects.

[0026] On the other hand, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used for the above-mentioned terminal device, which includes a program designed for executing the above-mentioned aspects.

[0027] On the other hand, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used for the above-mentioned terminal device, which includes a program designed for executing the above-mentioned aspects.

[0028] According to the communication access method provided by an embodiment of the present invention, the network device sends a synchronization signal and a system information signal generated based on at least two subcarrier spacings. After receiving the system information signal, the terminal device feeds back to the network device the subcarrier spacing used for transmitting uplink signals and / or the subcarrier spacing used for monitoring downlink signals determined by the terminal device, thereby supporting cell search and random access in a network with multiple subcarrier spacings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 is a schematic flow chart of a communication access method according to an embodiment of the present invention;

[0031] Figure 2A is a schematic diagram of the structure of a possible terminal device provided by an embodiment of the present invention;

[0032] Figure 2B is a schematic diagram of the structure of another possible terminal device provided by an embodiment of the present invention;

[0033] Figure 3A is a schematic diagram of a possible structure of a network device provided by an embodiment of the present invention;

[0034] Figure 3B It is a schematic diagram of the structure of another possible network device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0036] It should be understood that the technical solution of the present invention can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS) and future 5G communication systems.

[0037] It should also be understood that in the embodiments of the present invention, the terminal device can communicate with one or more core networks via a radio access network (RAN), and the user equipment can be referred to as an access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, and a terminal device in a future 5G network.

[0038] In an embodiment of the present invention, a network device may be used to communicate with a terminal device. The network device may be a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or e-NodeB for short) in LTE, or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, and a base station device in a future 5G network, etc. The present invention is not limited thereto, but for the sake of convenience of description, the following embodiments will be described using a base station eNB and a user equipment UE as examples.

[0039] Figure 1 A schematic diagram of a communication access method 100 according to an embodiment of the present invention is shown. Figure 1 As shown, the method includes:

[0040] S110, the eNB sends a synchronization signal and a system information signal generated based on at least two subcarrier spacings, the system information signal includes indication information for indicating a second subcarrier spacing, the second subcarrier spacing is the subcarrier spacing used by the UE to send a random access request signal, wherein the at least two subcarrier spacings include a first subcarrier spacing.

[0041] S120, the UE sends a random access request signal to the eNB based on the second subcarrier spacing and the first transmission resource, wherein the type of the first transmission resource corresponds to a third subcarrier spacing and / or a fourth subcarrier spacing, the third subcarrier spacing is the subcarrier spacing used by the UE to send an uplink signal, and the fourth subcarrier spacing is the subcarrier spacing used by the UE to monitor a downlink signal.

[0042] S130, the eNB sends a random access response signal generated based on the fourth subcarrier spacing to the UE, where the random access response signal is used to instruct the terminal device to access the network or the random access response signal is used to instruct the terminal device to prepare to access the network.

[0043] In the embodiment of the present invention, after the UE is powered on, it needs to search for cells, obtain cell system information, and perform random access before it can establish a communication link with the eNB. After the UE searches for cells, it can achieve frequency and symbol synchronization with the cell, and can obtain the system frame timing (i.e., the starting position of the downlink frame) and determine the PCI (Physical Cell Identity) of the cell.

[0044] Since there may be UEs supporting different subcarrier spacings in the current cell, the eNB sends the synchronization signal, broadcast signal and system information signal based on multiple subcarrier spacings, so that UEs supporting different subcarrier spacings can receive the above signals, and the UE can monitor the above signals based on one subcarrier spacing or multiple subcarrier spacings when monitoring the above signals. In the embodiment of the present invention, the sending of signals based on one subcarrier spacing refers to modulating the subcarrier spacing to generate a multicarrier signal and then transmitting it into the air, and the monitoring of signals based on one subcarrier spacing refers to receiving the signal and then demodulating the received signal using the subcarrier spacing.

[0045] In S110, the eNB sends a synchronization signal and a system information signal generated based on at least two subcarrier spacings, where the synchronization signal is used to help the UE achieve time and frequency synchronization with the eNB and obtain the PCI of the eNB. The eNB may also send a broadcast signal generated based on at least the two subcarrier spacings, where the at least two subcarrier spacings include a first subcarrier spacing, wherein the system information signal further carries indication information for indicating a second subcarrier spacing, where the indication information indicates that the UE uses the second subcarrier spacing to generate a random access request signal when sending a random access request signal, so that the eNB can monitor the random access request signal in an uplink channel based on the second subcarrier spacing, and the second subcarrier spacing indicated by the eNB to the UE may be a specific subcarrier spacing or a set of a type of subcarrier spacings, where the type of subcarrier spacings is related to the subcarrier spacing used by the eNB to send the system information signal, that is, if the UE receives the system information signal generated based on the first subcarrier spacing, the second subcarrier spacing indicated by the indication information carried by the system information signal is a subcarrier spacing related to the first subcarrier spacing, wherein the first subcarrier spacing and the second subcarrier spacing may be the same or different, and the eNB may indicate the second subcarrier spacing by a specific numerical value or by a sequence number of the subcarrier spacing. More specifically, one first subcarrier spacing may correspond to one second subcarrier spacing, and one first subcarrier spacing may also correspond to more than one second subcarrier spacing.

[0046] In S120, after the UE receives the system information signal generated based on the first subcarrier spacing from the eNB, the UE determines the second subcarrier spacing required to generate the random access request signal according to the indication information carried by the system signal. The UE can directly determine the subcarrier spacing used to send the random access response signal according to a second subcarrier spacing specified by the indication information, or determine a subcarrier spacing used to send the random access response signal from a class of second subcarrier spacings indicated by the indication information. The determination basis can be the downlink channel measurement result.

[0047] After determining the second subcarrier spacing, the UE sends a random access request signal to the eNB to request access to the cell of the eNB. The random access request signal is sent to the eNB through the first transmission resource. The UE can obtain the indication information of the first transmission resource according to the broadcast signal sent by the eNB. The UE can notify the eNB of the third subcarrier spacing and / or the fourth subcarrier spacing through the first transmission resource that transmits the random access request signal (the subcarrier spacing corresponds to the type of transmission resource, and the eNB can determine the subcarrier spacing selected by the UE based on the transmission resource used by the UE to send the random access request signal). The third subcarrier spacing is the subcarrier spacing used by the UE to send an uplink signal, and the fourth subcarrier spacing is the subcarrier spacing used by the UE to monitor the downlink signal, that is, the UE wants to notify the eNB that the UE sends an uplink signal. At least one of the subcarrier spacing used for the signal and the subcarrier spacing used for monitoring the downlink signal. If the UE only indicates the third subcarrier spacing, the eNB defaults to the UE monitoring the signal generated based on the first subcarrier spacing (that is, the subcarrier spacing used by the eNB to send the system information message), and can generate a downlink signal according to the first subcarrier spacing. If the UE only indicates the fourth subcarrier spacing, the eNB defaults to the UE sending the signal generated based on the second subcarrier spacing (that is, the subcarrier spacing used by the UE to send the random access request message), and can monitor the uplink signal sent based on the second subcarrier spacing, wherein the third subcarrier spacing may be the same as or different from the second subcarrier spacing, and the fourth subcarrier spacing may be the same as or different from the first subcarrier spacing.

[0048] In S130, the random access response signal sent by the eNB to the UE includes the following two situations:

[0049] In case 1, the random access response signal includes confirmation information in which the eNB instructs the UE to access the network (or access the cell of the eNB). After receiving the random access response signal, the UE can directly communicate service data according to the third subcarrier spacing and / or the fourth subcarrier spacing and the transmission resources allocated by the eNB through the downlink control information.

[0050] Case 2: The random access response signal includes an instruction for the UE to prepare to access the network. The UE needs to report the UE identification information to the eNB so that the eNB can formally confirm that the UE can access the network.

[0051] Therefore, according to the communication access method 100 of an embodiment of the present invention, the eNB sends a synchronization signal and a system information signal generated based on at least two subcarrier spacings. After receiving the system information signal, the UE feeds back to the eNB the subcarrier spacing used for transmitting uplink signals and / or the subcarrier spacing used for monitoring downlink signals determined by the UE, thereby supporting cell search and random access in a network with multiple subcarrier spacings.

[0052] Optionally, when the random access response signal indicates that the UE is ready to access the network, the random access response signal further includes indication information for indicating a second transmission resource, where the second transmission resource is used to transmit the uplink signal, and the method 100 further includes:

[0053] S140, the UE sends a signal including message 3 to the eNB based on the second transmission resource and the third subcarrier spacing, where the message 3 includes identification information of the UE, so that the eNB determines whether the UE can access the network according to the identification information;

[0054] S150, the eNB determines, according to the identification information, that the UE accesses the network;

[0055] S160: The eNB sends an access confirmation signal to the UE based on the fourth subcarrier spacing, where the access confirmation signal is used to indicate that the UE accesses the network.

[0056] In an embodiment of the present invention, if the random access response signal indicates that the UE is ready to access the network, the random access response signal also includes information for indicating a second transmission resource, and the second transmission resource is used for the UE to send identification information to the eNB. The UE uses the second transmission resource to send a signal including message 3 to the eNB, and the signal is generated based on the third subcarrier spacing. After the eNB receives message 3 sent by the UE, it can determine that the UE can access the network according to the identification information of the UE carried by message 3, and send an access confirmation signal generated based on the fourth subcarrier spacing to the UE, instructing the UE to access the network.

[0057] According to the communication access method of an embodiment of the present invention, the UE reports the identification information of the UE, and the eNB determines whether the UE can access the network based on the identification information, thereby avoiding transmission conflicts when each terminal device communicates in a scenario with a large number of terminal devices in the network.

[0058] Optionally, the method 100 further includes:

[0059] S170, the eNB sends configuration information to the UE, where the configuration information is used to configure a fifth subcarrier spacing, and the fifth subcarrier spacing is the subcarrier spacing used by the UE after accessing the network.

[0060] After the eNB determines that the UE can access the network, it sends configuration information to the UE, and the configuration information is used to allocate the subcarrier spacing used by the UE after accessing the network. The subcarrier spacing can be a subcarrier spacing for monitoring downlink signals, or a subcarrier spacing for sending uplink signals, and can also indicate the subcarrier spacing for receiving downlink signals and sending uplink signals at the same time. The fifth subcarrier spacing can be a subcarrier spacing or a plurality of subcarrier spacings. The plurality of subcarrier spacings can include a primary subcarrier spacing (Primie Subcarrier Spacing), which can also be called an anchor subcarrier spacing (Anchor Subcarrier Spacing) or a preferred subcarrier spacing (Prior Subcarrier Spacing). The primary subcarrier spacing is a subcarrier spacing of the at least two subcarrier spacings specified by the eNB. When the fifth subcarrier spacing is a subcarrier spacing, the subcarrier spacing can also be called a primary subcarrier spacing. The eNB can determine the subcarrier spacing corresponding to the relatively idle resources as the primary subcarrier spacing of the UE according to the utilization rate of the time-frequency resources with different subcarrier spacings, and can also determine the subcarrier spacing corresponding to the resources with better channel quality as the primary subcarrier spacing of the UE according to the channel quality.

[0061] The eNB may modulate the configuration information into an access confirmation signal and send it to the UE, or may send the configuration information to the UE through a higher layer signaling, a media access control layer signaling, or a physical control channel after sending the access confirmation signal.

[0062] Optionally, the eNB may also configure a sixth subcarrier spacing for the UE in the configuration information, where the sixth subcarrier spacing is a subcarrier spacing for sending uplink signals used by the UE after accessing the network.

[0063] Optionally, the configuration information is carried in an access confirmation signal, thereby reducing signaling overhead.

[0064] Optionally, the fifth subcarrier spacing includes at least two subcarrier spacings. In this way, the UE can use resources corresponding to a variety of subcarrier spacings to increase the communication rate between the eNB and the UE.

[0065] Optionally, when the fifth subcarrier spacing includes at least two subcarrier spacings, the UE may monitor a downlink control channel sent based on the at least two subcarrier spacings according to indication information of the eNB or provisions of a communication protocol or a communication standard; or

[0066] The UE may monitor a downlink control channel sent based on a primary subcarrier spacing among the at least two subcarrier spacings according to indication information of the eNB or provisions of a communication protocol or a communication standard.

[0067] Optionally, the random access request signal includes a preamble code sequence, and the type of the preamble code sequence corresponds to the third subcarrier spacing and / or the fourth subcarrier spacing.

[0068] The random access request signal sent by the UE may also include a preamble sequence, so that the eNB estimates the transmission delay between it and the UE according to the preamble sequence, and the type of the preamble corresponds to the third subcarrier spacing and / or the fourth subcarrier spacing, and the correspondence between the preamble type and the third subcarrier spacing and / or the fourth subcarrier spacing may be predefined. Thus, the UE can flexibly select a method for indicating the subcarrier spacing used for transmitting an uplink signal and / or detecting a downlink signal.

[0069] The above embodiments mainly introduce the scheme of the embodiments of the present invention from the perspective of the interaction between the terminal device and the network device. It is understandable that, in order to realize the above functions, each device includes a hardware structure and / or software module corresponding to each function. It should be easy for those skilled in the art to realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0070] The embodiment of the present invention can divide the terminal device and the network device into functional units according to the above method example. For example, each functional unit can be divided according to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of software functional units. It should be noted that the division of units in the embodiment of the present invention is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0071] In the case of an integrated unit, Figure 2A A possible structural diagram of the terminal device involved in the above embodiment is shown. The terminal device 200 includes: a processing unit 202 and a communication unit 203. The processing unit 202 is used to control and manage the actions of the terminal device 200. For example, the processing unit 202 is used to support the terminal device 200 to execute Figure 1The processing unit 202 may also be used to support the terminal device 200 in executing S140 of the method 100, and / or other processes for the technology described herein. The communication unit 203 is used to support the communication between the terminal device 200 and other network entities, such as the communication between the terminal device 200 and the eNB in ​​the method 100. The terminal device 200 may also include a storage unit 201 for storing program codes and data of the terminal device 200.

[0072] Among them, the processing unit 202 can be a processor or a controller, for example, it can be a central processing unit (CPU), a general processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of the present invention. The processor can also be a combination that implements a computing function, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit 203 can be a communication interface, a transceiver, a transceiver circuit, etc., wherein the communication interface is a general term and can include one or more interfaces. The storage unit 201 can be a memory.

[0073] When the processing unit 202 is a processor, the communication unit 203 is a communication interface, and the storage unit 201 is a memory, the terminal device involved in the embodiment of the present invention can be Figure 2B The terminal device shown.

[0074] See also Figure 2B As shown, the terminal device 210 includes: a processor 212, a communication interface 213, and a memory 211. Optionally, the terminal device 210 may also include a bus 214. The communication interface 213, the processor 212, and the memory 211 may be interconnected via the bus 214; the bus 214 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus 214 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 2B Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0075] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0076] Therefore, the terminal device provided in an embodiment of the present invention, after receiving the system information signal, feeds back to the network device the subcarrier spacing used for transmitting uplink signals and / or monitoring downlink signals determined by the terminal device, thereby supporting cell search and random access in a network with multiple subcarrier spacing.

[0077] In the case of an integrated unit, Figure 3A A possible structural diagram of the network device involved in the above embodiment is shown. The network device 300 includes: a processing unit 302 and a communication unit 303. The processing unit 302 is used to control and manage the actions of the network device 300. For example, the processing unit 302 is used to support the network device 300 to execute Figure 1 The processing unit 302 may also be used to support the network device 300 in executing S150 and S160 in the method 100, and / or other processes for the technology described herein. The communication unit 303 is used to support the communication between the network device 300 and other network entities, such as the communication between the network device 300 and the UE in the method 100. The network device 300 may also include a storage unit 301 for storing program codes and data of the network device 300.

[0078] Among them, the processing unit 302 can be a processor or a controller, for example, it can be a central processing unit (CPU), a general processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of the present invention. The processor can also be a combination that implements a computing function, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit 303 can be a communication interface, a transceiver, a transceiver circuit, etc., wherein the communication interface is a general term and can include one or more interfaces. The storage unit 301 can be a memory.

[0079] When the processing unit 302 is a processor, the communication unit 303 is a communication interface, and the storage unit 301 is a memory, the network device involved in the embodiment of the present invention can be Figure 3B The network devices shown.

[0080] See also Figure 3B As shown, the network device 310 includes: a processor 312, a communication interface 313, and a memory 311. Optionally, the network device 310 may also include a bus 314. The communication interface 313, the processor 312, and the memory 311 may be interconnected via the bus 314; the bus 314 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus 314 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 3B Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0081] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0082] Therefore, the network device provided in an embodiment of the present invention sends a synchronization signal and a system information signal generated based on at least two subcarrier spacings, and receives feedback from a terminal device on the subcarrier spacing used for transmitting uplink signals and / or the subcarrier spacing used for monitoring downlink signals determined by the terminal device, thereby supporting cell search and random access in a network with multiple subcarrier spacings.

[0083] In the embodiment of the present invention, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0084] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0085] The steps of the method or algorithm described in conjunction with the disclosed content of the embodiment of the present invention can be implemented in a hardware manner, or can be implemented by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory (Random Access Memory, RAM), a flash memory, a read-only memory (Read Only Memory, ROM), an erasable programmable read-only memory (Erasable Programmable ROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), a register, a hard disk, a mobile hard disk, a read-only compact disk (CD-ROM) or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and can write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a terminal device or a network device. Of course, the processor and the storage medium can also be present in a terminal device or a network device as discrete components.

[0086] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the present invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented using software, the functions may be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of a computer program from one place to another. The storage medium may be any available medium that a general or special-purpose computer can access.

[0087] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solution of the present invention should be included in the scope of protection of the present invention.

Claims

1. A communication access method, executed by a terminal device or a module applied to a terminal device, characterized in that: include: Receiving, from a network device, a system information signal generated based on a first subcarrier spacing, wherein the system information signal includes indication information for indicating a second subcarrier spacing, where the second subcarrier spacing is a subcarrier spacing used for sending a random access request signal; Sending a random access request signal to the network device based on the second subcarrier spacing and the first transmission resource, wherein the type of the first transmission resource corresponds to a third subcarrier spacing, and the third subcarrier spacing is a subcarrier spacing used for sending an uplink signal; A random access response signal generated based on a fourth subcarrier spacing is received from the network device.

2. The method according to claim 1, characterized in that The random access response signal indicates that the terminal device is ready to access the network device, the random access response signal includes indication information for indicating a second transmission resource, the second transmission resource is used to transmit the uplink signal, and the method further includes: Sending a signal including message 3 to the network device based on the second transmission resource and the third subcarrier spacing, where the message 3 includes identification information of the terminal device; An access confirmation signal generated based on the fourth subcarrier spacing is received from the network device, where the access confirmation signal is used to indicate that the terminal device and the network device access the network.

3. The method according to claim 2, characterized in that The method further comprises: Configuration information is received from the network device, where the configuration information is used to configure a fifth subcarrier spacing, where the fifth subcarrier spacing is a subcarrier spacing used after accessing the network.

4. The method according to claim 3, characterized in that The configuration information is carried in the access confirmation signal.

5. The method according to any one of claims 1 to 4, characterized in that The random access request signal includes a preamble code sequence, and a type of the preamble code sequence corresponds to the third subcarrier spacing and / or the fourth subcarrier spacing.

6. A communication access method, executed by a network device or a module applied to a network device, characterized in that: include: Sending a system information signal generated based on the first subcarrier spacing, wherein the system information signal includes indication information for indicating the second subcarrier spacing; Receiving a random access request signal generated based on the second subcarrier spacing from a terminal device through a first transmission resource, wherein the type of the first transmission resource corresponds to a third subcarrier spacing, and the third subcarrier spacing is a subcarrier spacing used by an uplink signal; Send a random access response signal generated based on the fourth subcarrier spacing to the terminal device.

7. The method according to claim 6, characterized in that The random access response signal indicates that the terminal device is ready to access the network device, the random access response signal also includes indication information for indicating a second transmission resource, the second transmission resource is used to receive the uplink signal, and the method further includes: receiving, from the terminal device through the second transmission resource, a signal including message 3 generated based on the third subcarrier spacing, where the message 3 includes identification information of the terminal device; Determining, according to the identification information, that the terminal device accesses the network; An access confirmation signal is sent to the terminal device based on the fourth subcarrier spacing, where the access confirmation signal is used to indicate that the terminal device has accessed the network.

8. The method according to claim 7, characterized in that The method further comprises: Configuration information is sent to the terminal device, where the configuration information is used to configure a fifth subcarrier spacing, and the fifth subcarrier spacing is the subcarrier spacing used by the terminal device after accessing the network.

9. The method according to claim 8, characterized in that The configuration information is carried in the access confirmation signal.

10. The method according to claim 8 or 9, characterized in that: The fifth subcarrier spacing includes at least two subcarrier spacings.

11. The method according to any one of claims 6 to 9, characterized in that The random access request signal includes a preamble code sequence, and a type of the preamble code sequence corresponds to the third subcarrier spacing and / or the fourth subcarrier spacing.

12. A communication device, characterized in that: include: At least one processor, wherein the at least one processor is configured to read and execute instructions in the memory to implement the method according to any one of claims 1 to 5.

13. A terminal device, comprising the communication apparatus according to claim 12.

14. A communication device, characterized in that: The system comprises at least one processor, wherein the at least one processor reads and executes instructions in the memory to implement the method according to any one of claims 6 to 11.

15. A network device comprising the communication apparatus according to claim 14.

16. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 11.

17. A communication device in a terminal device, characterized in that: include: A component for receiving a system information signal generated based on the first subcarrier spacing from a network device, wherein the system information signal includes indication information for indicating the second subcarrier spacing; a component for sending a random access request signal to the network device based on the second subcarrier spacing and the first transmission resource, wherein the type of the first transmission resource corresponds to a third subcarrier spacing, and the third subcarrier spacing is a subcarrier spacing used for sending an uplink signal; and means for receiving, from the network device, a random access response signal generated based on a fourth subcarrier spacing.

18. The device according to claim 17, characterized in that The random access response signal indicates that the terminal device is ready to access the network, the random access response signal includes indication information for indicating a second transmission resource, the second transmission resource is used to transmit the uplink signal, and the apparatus further includes: means for sending a signal including message 3 to the network device based on the second transmission resource and the third subcarrier spacing, wherein the message 3 includes identification information of the terminal device; and A component for receiving an access confirmation signal generated based on the fourth subcarrier spacing from the network device, wherein the access confirmation signal is used to indicate that the terminal device and the network device access the network.

19. The device according to claim 18, characterized in that Also includes: A component for receiving configuration information from the network device, wherein the configuration information is used to configure a fifth subcarrier spacing, and the fifth subcarrier spacing is the subcarrier spacing used after the terminal device accesses the network.

20. The device according to claim 19, characterized in that The configuration information is carried in the access confirmation signal.

21. The device according to any one of claims 17 to 20, characterized in that The random access request signal includes a preamble code sequence, and a type of the preamble code sequence corresponds to the third subcarrier spacing and / or the fourth subcarrier spacing.

22. A communication device in a network device, characterized in that: include: a component for sending a system information signal generated based on a first subcarrier spacing, wherein the system information signal includes indication information for indicating a second subcarrier spacing, where the second subcarrier spacing is a subcarrier spacing used for sending a random access request signal; and A component for receiving a random access request signal generated based on the second subcarrier spacing from a terminal device through a first transmission resource, wherein the type of the first transmission resource corresponds to a third subcarrier spacing, and the third subcarrier spacing is a subcarrier spacing used for receiving an uplink signal; and A component used to send a random access response signal generated based on a fourth subcarrier spacing to the terminal device.

23. The device according to claim 22, characterized in that The random access response signal indicates that the terminal device is ready to access the network, the random access response signal also includes indication information for indicating a second transmission resource, the second transmission resource is used to transmit the uplink signal, and the apparatus further includes: means for receiving, from the terminal device via the second transmission resource, a signal including message 3 generated based on the third subcarrier spacing, wherein the message 3 includes identification information of the terminal device; and A component for determining, according to the identification information, that the terminal device accesses the network; and A component for sending an access confirmation signal to the terminal device based on the fourth subcarrier spacing.

24. The device according to claim 23, characterized in that Also includes: A component for sending configuration information to the terminal device, wherein the configuration information is used to configure a fifth subcarrier spacing, and the fifth subcarrier spacing is the subcarrier spacing used by the terminal device after accessing the network.

25. The device according to claim 24, characterized in that The configuration information is carried in the access confirmation signal.

26. The device according to claim 24 or 25, characterized in that The fifth subcarrier spacing includes at least two subcarrier spacings.

27. The device according to any one of claims 22 to 25, characterized in that The random access request signal includes a preamble code sequence, and a type of the preamble code sequence corresponds to the third subcarrier spacing and / or the fourth subcarrier spacing.

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