TW202008817A - Signal transmission method and apparatus, terminal device, and network device - Google Patents

Abstract

Disclosed are a signal transmission method and apparatus, a terminal device, and a network device. The method comprises: the terminal device sends a first message to the network device, the first message comprising at least a first preamble, the first preamble being used as a demodulation reference signal of a first uplink data channel, and the first preamble occupying discontinuous frequency domain resources.

Description

Signal transmission method and device, terminal equipment and network equipment suitable for the method

The embodiments of the present invention relate to the technical field of mobile communications, and in particular to a signal transmission method and device, terminal equipment, and network equipment.

In the 5th Generation (5G) system, the Random Access Channel (RACH) process uses a four-step process similar to Long Term Evolution (LTE). However, the four-step RACH (4- step RACH) The delay overhead of the process is relatively large, which is not suitable for low latency and high reliability scenarios in 5G. In the standardization process of New Radio Interface (NR, New Radio), considering the characteristics of low latency and high reliability related services, two RACH (2-step RACH) process schemes are proposed. Compared with the four-step RACH process, Reduce access latency.

For the first step of the two-step RACH process, MSG1 includes a preamble signal (Preamble) and a physical upload shared channel (PUSCH, Physical Uplink Shared Channel) two parts of the signal, where Preamble can be used as a PUSCH demodulation reference signal, but Preamble frequency In some cases, the width is not enough to cover the PUSCH bandwidth, so the Preamble cannot be used as the PUSCH demodulation reference signal.

Embodiments of the present invention provide a signal transmission method and device, terminal equipment, and network equipment, which can increase the bandwidth of the preamble.

A signal transmission method provided by an embodiment of the present invention includes: a terminal device sends a first message to a network device, the first message includes at least a first preamble signal, and the first preamble signal is used as a first upstream data channel Demodulation reference signal, the first preamble signal occupies discontinuous frequency domain resources.

A signal transmission method provided by an embodiment of the present invention includes: a network device receives a first message sent by a terminal device, and the first message includes at least a first preamble signal, where the first preamble signal is used as first upstream data The demodulation reference signal of the channel, the first preamble signal occupies non-contiguous frequency domain resources.

A signal transmission device provided by an embodiment of the present invention includes: a transmission unit, configured to send a first message to a network device, where the first message includes at least a first preamble signal, where the first preamble signal is used as the first The demodulation reference signal of the upstream data channel, the first preamble signal occupies non-contiguous frequency domain resources.

A signal transmission device provided by an embodiment of the present invention includes a transmission unit for receiving a first message sent by a terminal device, where the first message includes at least a first preamble signal, where the first preamble signal is used as the first The demodulation reference signal of the upstream data channel, the first preamble signal occupies non-contiguous frequency domain resources.

The terminal device provided by the embodiment of the present invention includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to perform the above-mentioned signal transmission method.

The network device provided by the embodiment of the present invention includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to perform the above-mentioned signal transmission method.

The chip provided by the embodiment of the present invention is used to implement the above signal transmission method. Specifically, the chip includes a processor for calling and running a computer program from the memory, so that the device installed with the chip executes the above-mentioned signal transmission method.

The computer-readable storage medium provided by the embodiment of the present invention is used to store a computer program, and the computer program enables the computer to execute the above-mentioned signal transmission method.

The computer program product provided by the embodiment of the present invention includes computer program instructions, and the computer program instructions enable the computer to execute the above-mentioned signal transmission method.

The computer program provided by the embodiment of the present invention causes the computer to execute the above-mentioned signal transmission method when it runs on the computer.

Through the above technical solution, in the random access process, the first preamble (Preamble) occupies non-continuous frequency domain resources (such as frequency domain resources using an interlace structure) to expand the frequency domain resource range occupied thereby, It can be used as the demodulation reference signal for the first uplink data channel (PUSCH). In other words, the use of a non-contiguous frequency domain resource structure can expand the frequency domain range occupied by the first preamble (Preamble), so that the first uplink data channel (PUSCH) can have enough frequency domain units in the frequency domain range for the first An uplink data channel (PUSCH), thereby scheduling the first uplink data channel (PUSCH) more flexibly in this frequency domain.

The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are a part of the embodiments of the present invention rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

The technical solutions of the embodiments 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, and Broadband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Global Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

Exemplarily, the communication system 100 applied in the embodiment of the present invention is shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal or terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located in the coverage area. Optionally, the network device 110 may be a base transceiver station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a node (NodeB, NB) in a WCDMA system, or an LTE system. Evolutionary Node B (eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, relay station, access Point, vehicle equipment, wearable devices, hubs, switches, bridges, routers, network side devices in 5G networks or network devices in future public land mobile networks (PLMN), etc. .

The communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connection via wired lines, such as via public switched telephone network (Public Switched Telephone Networks, PSTN), digital subscriber line (DSL), digital cable, direct cable connection Cable; and/or another data connection/network; and/or via a wireless interface such as, for cellular networks, wireless local area networks (WLAN), digital TVs such as DVB-H networks Network, satellite network, AM-FM broadcast transmitter; and/or another terminal device set to receive/transmit communication signals; and/or Internet of Things (IoT) equipment. Terminal devices configured to communicate through a wireless interface may be referred to as "wireless communication terminals", "wireless terminals", or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellites or mobile phones; Personal Communications System (PCS) terminals that can combine cellular radiotelephones with data processing, fax, and data communication capabilities; can include radiotelephones, pagers, and Internet /Intranet access, Web browser, notepad, calendar, and/or PDA of Global Positioning System (GPS) receiver; and conventional laptop and/or palm-type receivers or including radio telephone transceiver Other electronic devices. Terminal equipment can refer to access terminal, user equipment (User Equipment, UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless Communication equipment, user agent or user device. The access terminal can be a mobile phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or a wireless communication function Handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in future PLMNs, etc.

Optionally, terminal-to-device (D2D) communication may be performed between the terminal devices 120.

Alternatively, the 5G system or 5G network may also be called a New Radio Interface (NR) system or NR network.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This is not limited in the embodiments of the present invention.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobile management entity, which is not limited in this embodiment of the present invention.

It should be understood that the device with communication function in the network/system in the embodiment of the present invention may be referred to as a communication device. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which is not described here. It will be described again; the communication device may also include other devices in the communication system 100, such as network controllers, mobile management entities and other network entities, which are not limited in the embodiments of the present invention.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone. three situations. In addition, the character “/” in this article generally indicates that the related objects are a “or” relationship.

To facilitate understanding of the technical solutions of the embodiments of the present invention, the four-step RACH process and the two-step RACH process are described below.

Referring to Figure 2, the four-step RACH process includes four steps, namely:

In the first step (step1), the terminal device sends a preamble signal (that is, a preamble sequence) to the node through MSG1 (Message 1), where the preamble signal is a randomly selected preamble signal.

In the second step (step2), after detecting that a terminal device sends a preamble signal, the node sends a random access response (RAR, Random Access Response) to the terminal device through MSG2 (Message 2) to inform the terminal device that it is sending MSG3 (Message 3) ) Uplink resource information that can be used, assign a temporary identification radio network temporary identification code (RNTI, Radio Network Temporary Identity) to the terminal device, and provide the terminal device with a time advance command (time advance command), etc.;

In the third step (step3), after receiving the random access response, the terminal device sends an MSG3 message in the upstream resource specified by the random access response message, which carries a temporary identification message specific to the terminal device;

In the fourth step (step4), the node sends a contention resolution message to the terminal device through MSG4 (Message 4), and at the same time allocates uplink transmission resources to the terminal device. When the terminal device receives the MSG4 sent by the node, it will detect whether the specific temporary identification of the terminal device sent by the terminal device on MSG3 is included in the contention resolution message sent by the node. If it contains, it indicates that the random access process of the terminal device is successful, otherwise it is considered The random process fails, and the terminal device needs to initiate the random access process again from the first step.

The delay overhead of the four-step RACH process is relatively large. In the NR standardization process, considering the characteristics of low latency and high reliability related services, a two-step RACH process scheme is proposed. Compared with the four-step RACH process, access can be reduced Delay. Referring to FIG. 3, the two-step RACH process includes two steps, namely:

In the first step (step1), the terminal device sends a preamble signal (that is, a preamble sequence) and other messages to the node through MSG1. Here, other messages may also be referred to as uplink data, and are sent through a physical upload shared channel (PUSCH, Physical Uplink Shared Channel), such as a temporary identification message specific to the terminal device.

In the second step (step2), after detecting that a terminal device sends a PUSCH, the node sends a random access response message and a contention resolution message to the terminal device through MSG2.

In the two-step RACH process, it is equivalent to merge the first and third steps of the four-step RACH process into the first step of the two-step RACH process, and merge the second and fourth steps of the four-step RACH process into two. Step 2 in the RACH process. Therefore, in the first step of the two-step RACH, the terminal device needs to send a preamble and a PUSCH. As shown in FIG. 4, a cyclic prefix (CP) is set before the preamble signal and between the preamble signal and the PUSCH, and a guard time slot (GT, Guaranteed Time) is set after the PUSCH.

表1：PRACH preamble formats(

，

)

表2：Preamble formats(

，

，

)Among them, Preamble can play the role of time-frequency synchronization and channel estimation. For the reference signal used for PUSCH demodulation, there are two schemes: one is to use Preamble as a reference signal to demodulate PUSCH, and the other is through (DMRS, Demodulation Reference Signal) Demodulate PUSCH. The advantage of the first scheme is that using Preamble as a demodulation reference signal can save resources occupied by DMRS. If the Preamble is to be used as a demodulation reference signal for the PUSCH, a physical resource block (PRB, Physical Resource Block) occupied by the PUSCH needs to have a Preamble signal, that is, the PRB occupied by the Preamble should include the PRB occupied by the PUSCH. However, since the bandwidth of the Preamble is related to the configured PRACH Preamble format, as shown in Table 1 and Table 2.

Table 1: PRACH preamble formats(

,

)

Table 2: Preamble formats(

,

,

)

For example, for format 0, 1, 2, the Preamble sequence length is 839, and the subcarrier spacing is 1.25kHz, then the Preamble occupies 1048.75 kHz, assuming that the PUSCH uses 15kHz, 30kHz, 60kHz, 120kHz, 240kHz subcarrier spacing, then The bandwidth occupied by the preamble is equivalent to 6, 3, 1.5, 0.75, and 0.375 PRBs of PUSCH, respectively. If the Preamble is to be used as the demodulation reference signal of the PUSCH, it must have sufficient bandwidth to cover the bandwidth of the PUSCH carrying the MSG3, so as to serve as the demodulation reference signal of the PUSCH. The embodiment of the present invention can solve the problem that the preamble is used as the PUSCH demodulation reference signal when the preamble is used together with the PUSCH in the scenario of the two-step RACH process.

FIG. 5 is a first schematic flowchart of a signal transmission method according to an embodiment of the present invention. As shown in FIG. 5, the signal transmission method includes the following steps:

Step 501: The terminal device sends a first message to the network device. The first message includes at least a first preamble signal, where the first preamble signal is used as a demodulation reference signal for the first upstream data channel. A preamble signal occupies non-contiguous frequency domain resources.

In the embodiment of the present invention, the terminal device may be any device that can communicate with a network device, such as a mobile phone, a tablet computer, a notebook computer, or a vehicle-mounted terminal.

In this embodiment of the present invention, the network device may be a node, such as gNB in 5G, eNB in LTE, and so on.

In the embodiment of the present invention, during the random access process, the terminal device sends a first message to the network device. Here, the first message is called MSG1, and the first message includes at least a first preamble signal, where the A preamble signal is used as a demodulation reference signal for the first uplink data channel, and the first preamble signal occupies non-contiguous frequency domain resources.

In the embodiment of the present invention, the terminal device may perform a two-step RACH process (refer to FIG. 3), which is not limited thereto, and may also perform a four-step RACH process (refer to FIG. 2). Here, the two-step RACH process is also referred to as the first type Random access process, the four-step RACH process is also called the second type of random access process. In the case that the random access process in step 501 belongs to the first type of random access process, the first message further includes the first uplink data channel, and the first uplink data channel includes, for example, terminal device-specific temporary identification message.

In an embodiment, the first preamble signal is used as a demodulation reference signal for the first upstream data channel, the first preamble signal occupies non-contiguous frequency domain resources, and further, the frequency occupied by the first preamble signal There is a first frequency domain interval between domain units. Further, the first preamble signal occupies one or more frequency domain units, and the first frequency domain interval includes one or more frequency domain units. In one example, the fineness of the frequency domain unit is subcarrier, or PRB, or resource block group (RBG), or subband.

For example, in the RACH process (which can be a two-step RACH process or a four-step RACH process), the preamble is transmitted. The preamble adopts an interlace structure, as shown in FIG. 6, that is, the preamble signal no longer occupies consecutive subcarriers However, there is a certain interval between the occupied subcarriers, the frequency domain bandwidth occupied by the preamble signal is therefore expanded, so that there are enough PRBs for the PUSCH in the expanded frequency domain bandwidth, thus expanding here More flexible scheduling of PUSCH in the frequency domain.

In an embodiment, the terminal device receives a first configuration message sent by the network device, wherein the first configuration message includes a first parameter, and the first parameter is used to determine the first preamble signal The first frequency domain interval between occupied frequency domain units. Further, the first configuration message is used to indicate a random access parameter, and the first configuration message is carried in a system message or a radio resource control (RRC) signal. For example, in the RACH configuration message, you can add the corresponding configuration message, for example, add the interlace message in the PRACH preamble format, such as 1/2, 1/3, 1/6, etc., representing the preamble signal every 2, 3 6 subcarriers occupy one subcarrier.

Based on the above technical solution, in the embodiment of the present invention, the first bandwidth corresponding to the frequency domain resource occupied by the first uplink data channel is within the range of the second bandwidth corresponding to the frequency domain resource occupied by the first preamble signal . For example, the frequency domain resource occupied by the preamble is one subcarrier for every 3 subcarriers, and the occupied bandwidth is from the subcarrier n1 to the subcarrier n2. Then, the PUSCH can occupy the bandwidth from the subcarrier n1 to the subcarrier n2. Certain subcarriers.

In the embodiment of the present invention, in order to distinguish whether the demodulation reference signal of the first uplink data channel is the first preamble signal or the DMRS, an indication message may be added to the first configuration message to indicate the first uplink data channel Whether the demodulation reference signal is the first preamble signal or the DMRS. When the indication message in the first configuration message is used to indicate that the demodulation reference signal of the first uplink data channel is the first front channel code, the first configuration message further evaluates the first The first frequency domain interval between frequency domain units occupied by a preamble signal is configured.

In the above solution of the embodiment of the present invention, the first uplink data channel may be a predefined or configured uplink data channel, which is not limited thereto, and the first uplink data channel may also be an uplink data channel based on scheduling.

7 is a second schematic flowchart of a signal transmission method according to an embodiment of the present invention. As shown in FIG. 7, the signal transmission method includes the following steps:

Step 701: The network device receives the first message sent by the terminal device. The first message includes at least a first preamble signal, wherein the first preamble signal is used as a demodulation reference signal for the first upstream data channel. The first preamble signal occupies non-contiguous frequency domain resources.

In this embodiment of the present invention, the network device may be a node, such as gNB in 5G, eNB in LTE, and so on.

In the embodiment of the present invention, the terminal device may be any device that can communicate with a network device, such as a mobile phone, a tablet computer, a notebook computer, or a vehicle-mounted terminal.

In the embodiment of the present invention, during the random access process, the network device receives the first message sent by the terminal device. Here, the first message is called MSG1, and the first message includes at least a first preamble signal, where the The first preamble signal is used as a demodulation reference signal for the first uplink data channel, and the first preamble signal occupies non-contiguous frequency domain resources.

In the embodiment of the present invention, the terminal device may perform a two-step RACH process (refer to FIG. 3), which is not limited thereto, and may also perform a four-step RACH process (refer to FIG. 2). Here, the two-step RACH process is also referred to as the first type Random access process, the four-step RACH process is also called the second type of random access process. In the case that the random access process in step 701 belongs to the first type of random access process, the first message further includes the first uplink data channel, and the first uplink data channel includes, for example, a terminal device-specific temporary identification message.

In an embodiment, the first preamble signal is used as a demodulation reference signal for the first upstream data channel, the first preamble signal occupies non-contiguous frequency domain resources, and further, the frequency occupied by the first preamble signal There is a first frequency domain interval between domain units. Further, the first preamble signal occupies one or more frequency domain units, and the first frequency domain interval includes one or more frequency domain units. In one example, the fineness of the frequency domain unit is subcarrier, or PRB, or resource block group (RBG), or subband.

For example, in the RACH process (which can be a two-step RACH process or a four-step RACH process), the preamble is sent. The preamble adopts an interlace structure, as shown in FIG. 6, that is, the preamble signal no longer occupies continuous subcarriers However, there is a certain interval between the occupied subcarriers, the frequency domain bandwidth occupied by the preamble signal is therefore expanded, so that there are enough PRBs for the PUSCH in the expanded frequency domain bandwidth, thus expanding here More flexible scheduling of PUSCH in the frequency domain.

In an embodiment, the network device sends a first configuration message to the terminal device, where the first configuration message includes a first parameter, and the first parameter is used to determine the occupation of the first preamble signal The first frequency domain interval between the frequency domain units. Further, the first configuration message is used to indicate a random access parameter, and the first configuration message is carried in a system message or a radio resource control (RRC) signal. For example, in the RACH configuration message, you can add the corresponding configuration message, for example, add the interlace message in the PRACH preamble format, such as 1/2, 1/3, 1/6, etc., representing the preamble signal every 2, 3 6 subcarriers occupy one subcarrier.

Based on the above technical solution, in the embodiment of the present invention, the first bandwidth corresponding to the frequency domain resource occupied by the first uplink data channel is within the range of the second bandwidth corresponding to the frequency domain resource occupied by the first preamble signal . For example, the frequency domain resource occupied by the preamble is one subcarrier for every 3 subcarriers, and the occupied bandwidth is from the subcarrier n1 to the subcarrier n2. Then, the PUSCH can occupy the bandwidth from the subcarrier n1 to the subcarrier n2. Certain subcarriers.

In the embodiment of the present invention, in order to distinguish whether the demodulation reference signal of the first uplink data channel is the first preamble signal or the DMRS, an indication message may be added to the first configuration message to indicate the first uplink data channel Whether the demodulation reference signal is the first preamble signal or the DMRS. When the indication message in the first configuration message is used to indicate that the demodulation reference signal of the first uplink data channel is the first front channel code, the first configuration message further evaluates the first The first frequency domain interval between frequency domain units occupied by a preamble signal is configured.

In the above solution of the embodiment of the present invention, the first uplink data channel may be a predefined or configured uplink data channel, which is not limited thereto, and the first uplink data channel may also be an uplink data channel based on scheduling.

FIG. 8 is a schematic structural diagram of a signal transmission device according to an embodiment of the present invention. The structure and functions of the message transmission device according to an embodiment of the present invention are described below in combination with two scenarios.

Scenario 1: As shown in FIG. 8, the device includes: a transmission unit 801 for sending a first message to a network device, the first message includes at least a first preamble signal, wherein the first preamble signal is used As a demodulation reference signal for the first upstream data channel, the first preamble signal occupies non-contiguous frequency domain resources.

In an embodiment, the first preamble signal occupies non-contiguous frequency domain resources, including: There is a first frequency domain interval between the frequency domain units occupied by the first preamble signal.

In an embodiment, the transmission unit 801 is further configured to receive a first configuration message sent by the network device, wherein the first configuration message includes a first parameter, and the first parameter is used to determine The first frequency domain interval between frequency domain units occupied by the first preamble signal.

In one embodiment, the first configuration message is used to indicate a random access parameter, and the first configuration message is carried in a system message or an RRC signal.

In one embodiment, the first preamble signal occupies one or more frequency domain units, and the first frequency domain interval includes one or more frequency domain units.

In one embodiment, the fineness of the frequency domain unit is subcarrier, or PRB, or RBG, or subband.

In an embodiment, in the case of the first type of random access process, the first message further includes the first uplink data channel.

In one embodiment, the first bandwidth corresponding to the frequency domain resource occupied by the first uplink data channel is within the range of the second bandwidth corresponding to the frequency domain resource occupied by the first preamble signal.

Scenario 2: As shown in FIG. 8, the device includes: a transmission unit 801 for receiving a first message sent by a terminal device, the first message includes at least a first preamble signal, wherein the first preamble signal is used As a demodulation reference signal for the first upstream data channel, the first preamble signal occupies non-contiguous frequency domain resources.

In an embodiment, the first preamble signal occupies non-contiguous frequency domain resources, including: There is a first frequency domain interval between the frequency domain units occupied by the first preamble signal.

In an embodiment, the transmission unit 801 is further configured to send a first configuration message to the terminal device, where the first configuration message includes a first parameter, and the first parameter is used to determine the first The first frequency domain interval between frequency domain units occupied by a preamble.

In an embodiment, the first configuration message is used to indicate a random access parameter, and the first configuration message is carried in a system message or an RRC signal.

In one embodiment, the first preamble signal occupies one or more frequency domain units, and the first frequency domain interval includes one or more frequency domain units.

In one embodiment, the fineness of the frequency domain unit is subcarrier, or PRB, or RBG, or subband.

In an embodiment, in the case of the first type of random access process, the first message further includes the first uplink data channel.

In one embodiment, the first bandwidth corresponding to the frequency domain resource occupied by the first uplink data channel is within the range of the second bandwidth corresponding to the frequency domain resource occupied by the first preamble signal.

Those skilled in the art should understand that the relevant description of the above-mentioned signal transmission device in the embodiment of the present invention can be understood by referring to the relevant description of the signal transmission method in the embodiment of the present invention.

9 is a schematic structural diagram of a communication device 600 according to an embodiment of the present invention. The communication device may be a terminal device or a network device. The communication device 600 shown in FIG. 9 includes a processor 610. The processor 610 may call and run a computer program from the memory to implement the embodiment of the present invention. method.

Optionally, as shown in FIG. 9, the communication device 600 may further include a memory 620. The processor 610 can call and run a computer program from the memory 620 to implement the method in the embodiment of the present invention.

The memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.

Optionally, as shown in FIG. 9, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send messages or data to other devices, or receive other Messages or data sent by the device.

Among them, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 600 may specifically be a network device according to an embodiment of the present invention, and the communication device 600 may implement the corresponding process implemented by the network device in each method of the embodiment of the present invention. Repeat again.

Optionally, the communication device 600 may specifically be a mobile terminal/terminal device according to an embodiment of the present invention, and the communication device 600 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present invention, for simplicity , Will not repeat them here.

10 is a schematic structural diagram of a wafer according to an embodiment of the present invention. The chip 700 shown in FIG. 10 includes a processor 710. The processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present invention.

Optionally, as shown in FIG. 10, the wafer 700 may further include a memory 720. The processor 710 can call and run a computer program from the memory 720 to implement the method in the embodiment of the present invention.

The memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.

Optionally, the wafer 700 may further include an input interface 730. The processor 710 can control the input interface 730 to communicate with other devices or chips. Specifically, it can obtain messages or data sent by other devices or chips.

Optionally, the wafer 700 may further include an output interface 740. The processor 710 can control the output interface 740 to communicate with other devices or chips. Specifically, it can output messages or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present invention, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present invention. For the sake of brevity, no further description is provided here.

Optionally, the wafer can be applied to the mobile terminal/terminal device in the embodiment of the present invention, and the wafer can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present invention. For brevity, here No longer.

It should be understood that the wafers mentioned in the embodiments of the present invention may also be referred to as system-level wafers, system wafers, wafer systems, or system-on-chip wafers.

11 is a schematic block diagram of a communication system 900 provided by an embodiment of the present invention. As shown in FIG. 9, the communication system 900 includes a terminal device 910 and a network device 920.

Among them, the terminal device 910 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method. Repeat again.

It should be understood that the processor in the embodiment of the present invention may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method embodiments may be completed by instructions in the form of hardware integrated logic circuits or software in the processor. The aforementioned 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 devices, discrete gate or transistor logic devices, discrete hardware components. The disclosed methods, steps, and logical block diagrams in the embodiments of the present invention may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present invention may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in random memory, flash memory, read-only memory, programmable read-only memory or electrically readable and writable programmable memory, temporary memory and other mature storage media in the art. The storage medium is located in the memory. The processor reads the information in the memory and combines the hardware to complete the steps of the above method.

It can be understood that the memory in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), Electronically erasable programmable EPROM (EEPROM) or flash memory can be electronically cleared. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache memory. By way of example but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory ( Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronous connection 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 is intended to include, but is not limited to, these and any other suitable types of memory.

It should be understood that the foregoing memory is exemplary but not limiting, for example, the memory in the embodiment of the present invention may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM) , 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 link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present invention is intended to include but not limited to these and any other suitable types of memory.

An embodiment of the present invention also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiment of the present invention, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention. For simplicity, I will not repeat them here.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present invention, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present invention For the sake of brevity, I will not repeat them here.

An embodiment of the present invention also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device in the embodiment of the present invention, and the computer program instruction causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention. This will not be repeated here.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present invention, and the computer program instruction causes the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present invention, For brevity, I will not repeat them here.

The embodiment of the invention also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present invention. When the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention. For brevity, I will not repeat them here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiments of the present invention. When the computer program runs on the computer, the computer executes the methods of the embodiments of the present invention by the mobile terminal/terminal device For the sake of brevity, I will not repeat them here.

Persons of ordinary skill in the art may realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

Those skilled in the art can clearly understand that for the convenience and conciseness of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided by the present invention, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the unit is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or elements may be combined or may Integration into another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed on multiple network units . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist alone, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, the computer software product is stored in a storage medium, including several The instructions are used to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present invention. The aforementioned storage media include: flash drives, removable hard drives, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical discs, etc. can store program code Medium.

The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present invention. It should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the patent application scope.

100 110 120 501, 701, 801‧‧‧ steps 600‧‧‧Communication equipment 610‧‧‧ processor 620‧‧‧Memory 630‧‧‧Transceiver 700‧‧‧chip 710‧‧‧ processor 720‧‧‧Memory 730‧‧‧ input interface 740‧‧‧Output interface 801‧‧‧ Transmission unit 900‧‧‧Communication system 910‧‧‧terminal equipment 920‧‧‧Network equipment

1 is a schematic diagram of a communication system architecture provided by an embodiment of the present invention;

2 is a schematic diagram of a 4-step RACH process provided by an embodiment of the present invention;

3 is a schematic diagram of a 2-step RACH process provided by an embodiment of the present invention;

4 is a schematic diagram of a message transmitted in a first step in a 2-step RACH process according to an embodiment of the present invention;

5 is a first schematic flowchart of a signal transmission method according to an embodiment of the present invention;

6 is a schematic diagram of an interlace structure provided by an embodiment of the present invention;

7 is a second schematic flowchart of a signal transmission method according to an embodiment of the present invention;

8 is a schematic structural diagram of a message transmission device according to an embodiment of the present invention;

9 is a schematic structural diagram of a communication device according to an embodiment of the present invention;

10 is a schematic structural diagram of a wafer according to an embodiment of the invention;

11 is a schematic block diagram of a communication system according to an embodiment of the present invention.

501‧‧‧Step

Claims (18)

A signal transmission method. The method includes: The terminal device sends a first message to the network device, the network device receives the first message sent by the terminal device, the first message includes at least a first preamble signal, wherein the first preamble signal is used As a demodulation reference signal for the first upstream data channel, the first preamble signal occupies non-contiguous frequency domain resources. The method according to item 1 of the patent application scope, wherein the first preamble signal occupies non-contiguous frequency domain resources, including: There is a first frequency domain interval between the frequency domain units occupied by the first preamble signal. The method according to item 2 of the patent application scope, wherein the method further comprises: The network device sends a first configuration message to the terminal device, and the terminal device receives the first configuration message sent by the network device, where the first configuration message includes a first parameter, the The first parameter is used to determine a first frequency domain interval between frequency domain units occupied by the first preamble signal. The method according to item 3 of the patent application scope, wherein the first configuration message is used to indicate a random access parameter, and the first configuration message is carried in a system message or a radio resource control RRC signal. The method according to any one of items 2 to 4 of the patent application range, wherein the first preamble signal occupies one or more frequency domain units, and the first frequency domain interval includes one or more frequency domain units . The method according to item 5 of the patent application scope, wherein the fineness of the frequency domain unit is a subcarrier, or a physical resource block PRB, or a resource block group RBG, or a subband. The method according to item 6 of the patent application scope, wherein the first message further includes the first uplink data channel. The method according to item 7 of the patent application scope, wherein the first bandwidth corresponding to the frequency domain resource occupied by the first upstream data channel is located at the second bandwidth corresponding to the frequency domain resource occupied by the first preamble signal In the range. Signal Message Message Preamble Signal Preamble Signal Signal Preamble Signal Preamble Signal Preamble Signal Message Message Preamble Signal Message Access Message Message Signal Preamble Signal Message Preamble Signal A type of signal transmission device, the device includes: The transmission unit is used to receive the first message sent by the terminal device and send the first message to the network device, the first message includes at least a first preamble signal, wherein the first preamble signal is used as the first The demodulation reference signal of the upstream data channel, the first preamble signal occupies non-contiguous frequency domain resources. The device according to item 9 of the patent application scope, wherein the first preamble signal occupies non-contiguous frequency domain resources, including: There is a first frequency domain interval between the frequency domain units occupied by the first preamble signal. The device according to item 10 of the patent application scope, wherein the transmission unit is further configured to receive the first configuration message sent by the network device and send the first configuration message to the terminal device, wherein The first configuration message includes a first parameter, and the first parameter is used to determine a first frequency domain interval between frequency domain units occupied by the first preamble signal. The device according to item 11 of the patent application scope, wherein the first configuration message is used to indicate a random access parameter, and the first configuration message is carried in a system message or an RRC signal. The device according to any one of claims 10 to 12, wherein the first preamble signal occupies one or more frequency domain units, and the first frequency domain interval includes one or more frequency domain units . The device according to item 13 of the patent application range, wherein the fineness of the frequency domain unit is a subcarrier, or PRB, or RBG, or subband. The device according to item 14 of the patent application scope, wherein the first message further includes the first uplink data channel. The device according to item 15 of the patent application range, wherein the first bandwidth corresponding to the frequency domain resource occupied by the first upstream data channel is located at the second bandwidth corresponding to the frequency domain resource occupied by the first preamble signal In the range. Signal message message preamble signal preamble signal signal preamble signal preamble signal preamble signal message message preamble signal message access message message signal preamble signal message preamble signal A terminal device, including a processor and memory, the memory is used to store computer programs, so The processor is used to call and run a computer program stored in the memory to execute the method as described in any one of items 1 to 8 of the patent application. A network device, including a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and executes as described in the patent application items 1 to 8. The method of any one. Storage media storage

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