Data transmission method, network device, terminal device, and communication system.

Abstract

The present invention relates to a method of data transmission, a network device, a terminal device, a communications system, and a computer program product. The method includes: detecting, by means of a network device, a first signal in an uplink signal; determining, by means of the network device, a signal structure of the uplink signal based on a result of the detection of the first signal; and receiving, by means of the network device, the uplink signal based on the signal structure, and / or responding to the uplink signal based on the signal structure. According to the data transmission method in the embodiments of this application, before receiving data, the network device can determine the signal structure, used by the terminal device, of the uplink signal, and then use a corresponding receiving method.This prevents the complexity and reliability risk caused by completely blind detection performed by the network device, and can effectively reduce signaling delay and overhead.

Description

1 / 46 DATA TRANSMISSION METHOD, NETWORK DEVICE, TERMINAL DEVICE AND COMMUNICATION SYSTEM

[001] This application claims priority to the Patent Application Chinese Patent No. 201710008469.3, filed with the China Patent Office on January 5, 2017, and entitled DATA TRANSMISSION METHOD, NETWORK DEVICE, AND TERMINAL DEVICE, which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[002] The concretizations of this request relate to the field of communications, and, more specifically, to a method of data transmission, a network device and a terminal device. BACKGROUND

[003] A dynamic grant-based and request-based method is generally used to transmit uplink data in a Long Term Evolution (LTE) system. Specifically, when a data packet needs to be sent, a terminal device will send a scheduling request to a base station to request, from the base station, a resource used to send an uplink data packet, a modulation and coding scheme (MCS) for use, and the like. After receiving the scheduling request, if the base station allows the terminal device to send the uplink data packet, the base station will generate grant information and send the grant information to the terminal device, where the grant information is used to inform the terminal device of information such as the resource used to send the data packet.After receiving the grant information, the terminal device sends the data packet based on an indication from the grant information.

[004] However, with regard to sending a small package of Petition 870250094856, dated 10 / 17 / 2025, page 5 / 116 2 / 46 data, for example, small packet services in a massive machine type communication (mMTC) scenario and an enhanced mobile broadband (eMBB) scenario that are in a 5G system, a delay and signaling overhead will be excessively large when using the dynamic grant-based and request-based data transmission method, thus reducing the system efficiency.

[005] To solve the above problem, a lease-free transmission method is used in the previous technique for a scenario of small packet transmission with obvious periodicity. Specifically, the base station sends lease information to the terminal device only once. On a subsequent uplink transmission opportunity (such as a subframe), when there is a data packet, the terminal device will send the data packet using the lease information. In this way, the control signaling overhead can be significantly reduced.

[006] However, when the terminal device transmits uplink data using the concession-free transmission method, the terminal device and the base station need to be in an uplink synchronized state. Specifically, when the terminal device is in an idle mode or loses uplink synchronization, before transmitting data using the concession-free transmission method, the terminal device must first implement uplink synchronization with the base station through a random access procedure, and then the terminal device can send the uplink data using the concession-free transmission method. Consequently, a delay and signaling overhead are still relatively large. SUMMARY Petition 870250094856, dated 10 / 17 / 2025, page 6 / 116 3 / 46

[007] The embodiments of this application provide a method of data transmission, a network device and a terminal device to reduce signaling delay and overhead.

[008] According to a first aspect, a method of information transmission is provided, which includes:

[009] detect, by means of a network device, a first signal in an uplink signal;

[0010] determine, by means of the network device, a signal structure of the uplink signal based on a result of the detection of the first signal; and

[0011] receive, through the network device, the uplink signal based on the signal structure, and / or respond to the uplink signal based on the signal structure.

[0012] In this implementation of this request, before demodulating the data, the network device can determine the signal structure, used by a terminal device, of the uplink signal, and then use a corresponding receiving method. This prevents the complexity and risk to reliability that are caused by completely blind detection performed by the network device, and can effectively reduce signaling delay and overhead.

[0013] In addition, in some possible designs, if the network device finds the first signal,

[0014] The determination, by means of the network device, of a signal structure of the uplink signal based on a first signal detection result will include:

[0015] determine, by means of the network device, the signal structure based on the first mapping relationship information and the first signal, where the first mapping relationship information includes: a match between the first signal and the signal structure, and / or a match between a resource used to transmit the Petition 870250094856, dated 10 / 17 / 2025, page 7 / 116 4 / 46 first signal and signal structure.

[0016] In some possible designs, the determination, by means of the network device, of the signal structure based on the first mapping relationship information and the first signal includes:

[0017] determine, by means of the network device based on the first mapping relationship information and the first signal, that the uplink signal includes only the first signal; and

[0018] The reception, via the network device, of the uplink signal based on the signal structure, and / or the response to the uplink signal based on the signal structure includes:

[0019] send, via the network device, a reply message to a terminal device, where the reply message includes feedback information from the first signal.

[0020] In addition, in some possible designs, prior to the network device receiving the uplink signal based on the signal structure, and / or responding to the uplink signal based on the signal structure, the method further includes:

[0021] determine, by means of the network device, a second signal based on the second mapping relationship information and the first signal, where the second mapping relationship information includes:

[0022] a match between the second signal and the first signal, and a match between the first signal and at least one third signal, an attribute information of the first data or an attribute information of the second data.

[0023] In this embodiment of this request, the network device can determine the second signal, and / or the third signal, and / or the second data based on a mapping relationship, and receive the first data and / or the second data using the second signal and / or the third signal. This further reduces the complexity for the device. Petition 870250094856, dated 10 / 17 / 2025, p. 8 / 116 5 / 46 network reduces latency and improves reliability.

[0024] In addition, in some possible designs, the determination, by means of the network device, of the signal structure based on the first mapping relationship information and the first signal includes:

[0025] determining, by means of the network device based on the first mapping relationship information, the second mapping relationship information and the first signal, that the uplink signal includes:

[0026] the first signal, the second signal, the third signal and the first data; and

[0027] The reception, via the network device, of the uplink signal based on the signal structure, and / or the response to the uplink signal based on the signal structure includes:

[0028] determine, by means of the network device, the third signal and the attribute information of the first data based on the second mapping relationship information and the first signal; receive, by means of the network device, the first data based on the second signal, the third signal and the attribute information of the first data; and send, by means of the network device, a reply message to the terminal device, where the reply message includes feedback information of the first signal and feedback information of the first data.

[0029] In addition, in some possible designs, the determination, by means of the network device, of the signal structure based on the first mapping relationship information and the first signal includes:

[0030] determining, by means of the network device based on the first mapping relationship information and the first signal, that the uplink signal includes:

[0031] the first signal, the second signal and the second data; and

[0032] the reception, through the network device, of the signal of Petition 870250094856, dated 10 / 17 / 2025, page 9 / 116 6 / 46 uplink based on signal structure, and / or the uplink signal response based on signal structure include:

[0033] receive, via the network device, the second data based on the second signal; and send, via the network device, a reply message to a terminal device, where the reply message includes feedback information from the first signal.

[0034] In some possible designs, if the network device does not find any first signal,

[0035] the determination, by means of the network device, of a signal structure of the uplink signal based on the result of detection of the first signal includes;

[0036] determine, by means of the network device, that the uplink signal includes:

[0037] a second signal, a third signal, and the first data; and

[0038] The reception, via the network device, of the uplink signal based on the signal structure, and / or the response to the uplink signal based on the signal structure includes:

[0039] determine, by means of the network device, the second signal and the third signal based on the third mapping relationship information; receive, by means of the network device, the first data based on the second signal and the third signal; and send, by means of the network device, a reply message to a terminal device, where the reply message includes feedback information from the first data.

[0040] In this embodiment of this request, the network device can determine the second signal based on the third mapping relationship information, and receive the second data using the second signal. This further reduces complexity for the network device, reduces latency, and improves reliability.

[0041] According to a second aspect, a method is provided Petition 870250094856, dated 10 / 17 / 2025, page 10 / 116 7 / 46 data transmission, which includes:

[0042] determine, by means of the terminal device, a signal structure of an uplink signal based on an uplink status and a destination data type; and

[0043] send, via the terminal device, the uplink signal based on the first mapping relationship information and the signal structure of the uplink signal.

[0044] According to the data transmission method in this embodiment of this application, when the terminal device transmits data, the terminal device can determine the signal structure of the uplink signal based on the data type and synchronization status, and transmit the uplink data based on the uplink transmission signal structure. This can effectively reduce signaling delay and overhead.

[0045] In some possible designs, the uplink status is an out-of-sync uplink state.

[0046] In addition, in some possible designs, the target data is empty; and

[0047] the determination, by means of a terminal device, of a signal structure of an uplink signal based on an uplink status and a destination data type includes:

[0048] determine, by means of the terminal device based on the first mapping relationship information, that the uplink signal includes only the first signal.

[0049] In addition, in some possible designs, before the uplink signal is sent via the terminal device based on the initial mapping relationship information and the uplink signal structure, the method additionally includes:

[0050] determine, by means of the terminal device, a second signal based on the second mapping relationship information and on Petition 870250094856, dated 10 / 17 / 2025, page 11 / 116 8 / 46 first sign, where

[0051] the second mapping relationship information includes:

[0052] a match between the second signal and the first signal, and a match between the first signal and at least one third signal, an attribute information of the first data or an attribute information of the second data.

[0053] In addition, in some possible designs, the target data is application layer data; and

[0054] the determination, by means of the terminal device, of a signal structure of an uplink signal based on an uplink status and a destination data type includes:

[0055] determine, by means of the terminal device based on the first mapping relationship information and the second mapping relationship information, that the uplink signal includes:

[0056] the first signal, the second signal, the third signal and the first data.

[0057] Furthermore, in some possible designs, the target data is not application layer data; and

[0058] the determination, by means of the terminal device, of a signal structure of an uplink signal based on an uplink status and a destination data type includes:

[0059] determine, by means of the terminal device based on the first mapping relationship information and the second mapping relationship information, that the uplink signal includes:

[0060] the first signal, the second signal and the second data.

[0061] In some possible designs, the uplink status is a synchronized uplink state, and the destination data is application layer data; and

[0062] the determination, by means of the terminal device, of a signal structure of an uplink signal based on an uplink status Petition 870250094856, dated 10 / 17 / 2025, page 12 / 116 9 / 46 and in one type of target data includes:

[0063] determine, by means of the terminal device based on the third mapping relationship information, that the uplink signal includes:

[0064] a second signal, a third signal and first data.

[0065] According to a third aspect, a network device is provided, which includes:

[0066] a detection unit, configured to detect a first signal in an uplink signal;

[0067] a processing unit, configured to determine a signal structure of the uplink signal based on a result of the detection of the first signal; and

[0068] a transceiver unit, configured to receive the uplink signal based on the signal structure, and / or respond to the uplink signal based on the signal structure.

[0069] The network device in the third aspect can implement the data transmission method performed by the network device in the method in the first aspect.

[0070] According to a fourth aspect, a network device is provided, which includes:

[0071] a processor, configured to: detect a first signal in an uplink signal, and determine a signal structure of the uplink signal based on a result of the first signal detection; and

[0072] a transceiver, configured to receive the uplink signal based on the signal structure, and / or respond to the uplink signal based on the signal structure.

[0073] The network device in a fourth aspect can implement the data transmission method performed by the network device in the method in the first aspect.

[0074] According to a fifth aspect, a terminal device is provided, which includes: Petition 870250094856, dated 10 / 17 / 2025, page 13 / 116 10 / 46

[0075] a processing unit, configured to determine a signal structure of an uplink signal based on an uplink status and a destination data type; and

[0076] a transceiver unit, configured to send the uplink signal based on the first mapping relationship information and the signal structure of the uplink signal.

[0077] The terminal device in the fifth aspect can implement the data transmission method executed by the terminal device in the method in the second aspect.

[0078] According to a sixth aspect, a terminal device is provided, which includes:

[0079] a processor, configured to determine a signal structure of an uplink signal based on an uplink status and a target data type; and

[0080] a transceiver, configured to send the uplink signal based on the first mapping relationship information and the signal structure of the uplink signal.

[0081] The terminal device in the sixth aspect can implement the data transmission method executed by the terminal device in the method in the second aspect.

[0082] With reference to the above aspects, in some possible designs, the third mapping relation information includes a correspondence between the attribute information of the first data, the second signal and the third signal.

[0083] With reference to the above aspects, in some possible designs, the third mapping relationship information includes the correspondence between the attribute information of the first data, the second signal and the third signal.

[0084] With reference to the aspects above, in some possible designs, the attribute information includes: Petition 870250094856, dated 10 / 17 / 2025, page 14 / 116 11 / 46

[0085] at least one cyclic prefix length of an orthogonal frequency division multiplexing (OFDM) symbol, an OFDM symbol feature or a modulation and coding scheme (MCS).

[0086] With reference to the above aspects, in some possible designs, the first signal is used for uplink synchronization between the terminal device and the network device, and the third signal is used to estimate an uplink channel between the terminal device and the network device.

[0087] With reference to the above aspects, in some possible designs, the response message additionally includes feedback information from the second data.

[0088] According to a seventh aspect, an embodiment of this application provides a method of data transmission, wherein the method comprises: determining, by means of a terminal device, a signal structure of an uplink signal based on an uplink status and a destination data type; sending, by means of the terminal device, the uplink signal based on the first mapping relationship information and the signal structure of the uplink signal; detecting, by means of a network device, a first signal in an uplink signal; determining, by means of the network device, a signal structure of the uplink signal based on a first signal detection result; and receiving, by means of the network device, the uplink signal based on the signal structure, and / or responding to the uplink signal based on the signal structure.

[0089] According to an eighth aspect, an embodiment of this application provides a communications system. The communications system includes a network-side device and a communications terminal device, where the network-side device is configured to implement the method in either the first aspect or Petition 870250094856, dated 10 / 17 / 2025, p. 15 / 116 12 / 46 possible implementations of the first aspect, and the terminal device is configured to implement the method in any of the second aspect or possible implementations of the second aspect.

[0041] According to a ninth aspect, an embodiment of this application provides a computer program product wherein, when the computer program product is executed on a computer, the computer will execute the method according to the method in any of the first aspect or possible implementations of the first aspect or the method in any of the second aspect or possible implementations of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a schematic diagram of an example of a scenario according to an embodiment of this request.

[0043] Figure 2 is a schematic block diagram of a time-frequency resource location according to an embodiment of this request.

[0044] Figure 3 is a schematic block diagram to indicate a signal structure of an uplink signal using a first signal according to an embodiment of this request.

[0045] Figure 4 is a schematic block diagram indicating a signal structure of an uplink signal using a resource used to transmit a first signal according to a realization of this request.

[0046] Figure 5 is a schematic block diagram indicating a signal structure of an uplink signal using a first signal and a resource used to transmit the first signal according to a realization of this request.

[0047] Figure 6 is a schematic block diagram of a network device for data transmission according to an embodiment of this request. Petition 870250094856, dated 10 / 17 / 2025, page 16 / 116 13 / 46

[0048] Figure 7 is another schematic block diagram of a network device for data transmission according to an embodiment of this request.

[0049] Figure 8 is a schematic block diagram of a terminal device for data transmission according to an embodiment of this request.

[0050] And Figure 9 is another schematic block diagram of a terminal device for data transmission according to an embodiment of this request. DESCRIPTION OF THE ACCOMPLISHMENTS

[0051] Random access is a process necessary to establish a radio connection between user equipment (UE) and a network. Only after the UE implements uplink synchronization with a base station (Node B (NB)) through the random access procedure can the UE be scheduled by the base station to transmit uplink data.

[0052] Currently, based on different ways of triggering services, random access can be classified into contention-based random access (Contention-based random access procedure) and non-contention-based random access (Non-Contention-based random access procedure).

[0053] When Node B does not recognize a service or a state of However, if the UE needs to apply an uplink resource or an uplink timing advance (Time Alignment (TA)) for synchronization, the UE will need to initiate contention-based random access. A specific contention-based random access procedure is: The UE sends Node B a sequence of randomly selected random access preambles; Node B sends a random access reply message to the UE to inform the UE of information about an uplink resource. Petition 870250094856, dated 10 / 17 / 2025, page 17 / 116 14 / 46 that can be used; after receiving the random access response, the UE sends a scheduling message on an uplink resource specified in the random access response message, where the scheduling message includes information about a unique UE identifier; and, after receiving a request, Node B sends a contention resolution result to the UE, to complete the random access procedure.

[0054] For example, the UE performs initial access. In this case, a Radio Resource Control (RRC) layer state is an inactive Radio Resource Control mode (RRC_IDLE). In another example, the UE will perform re-establishment when a radio link is interrupted. In yet another example, the UE sends uplink data but finds that uplink synchronization is lost or that there is no uplink Scheduling Request (SR) resource. In yet another example, the UE needs to receive new downlink data and then transmit acknowledgment / negative acknowledgment (ACK / NACK) information about an uplink, but finds that uplink synchronization is lost. In this case, because Node B does not recognize a service or a UE state, the UE needs to initiate contention-based random access.

[0055] In the contention-free random access method, Node B informs the UE of a sequence of preambles and a resource to be used. A specific contention-free random access procedure is: Node B sends the information indicating a sequence of random access preambles to the UE; the UE sends the specific random access preamble sequence to Node B; and Node B sends a random access response to the UE to complete the random access procedure.

[0056] For example, the UE needs to perform a cell transfer. In another example, downlink synchronization is lost, but Petition 870250094856, dated 10 / 17 / 2025, page 18 / 116 15 / 46 there is downlink data to be sent.

[0057] It should be noted that when the terminal device transmits uplink data using a grant-free transmission method, the terminal device and Node B will need to be in an uplink synchronized state. In other words, when the terminal device transmits uplink data using the grant-free transmission method, the terminal device will first need to perform uplink synchronization with Node B through the random access procedure. Specifically, if the non-grant-based random access method is used, data can only be sent after the three-step random access procedure is executed; or if the grant-based random access method is used, data can only be sent after the four-step random access procedure is executed. Consequently, delay and signaling overhead are excessively high.

[0058] The embodiments of this application provide a method of data transmission. A random access procedure and a data transmission process (grant-free transmission and dynamic grant-based and request-based transmission) are integrated, so that, based on a synchronization status, a data transmission requirement (whether or not the data needs to be sent) and information such as a channel status, a terminal can select a suitable signal structure from a plurality of uplink transmission signal structures for transmission.

[0059] It should be understood that the technical solutions in the embodiments of this application can be applied to various communication systems, for example, a global system for a mobile communication system (Global System of Mobile communication (GSM)), a code division multiple access system (Code Division Multiple). Petition 870250094856, dated 10 / 17 / 2025, page 19 / 116 16 / 46 Access (CDMA), a wideband code division multiple access system (WCDMA), a general packet radio service (GPRS) system, a 5G communications system, a frequency division duplex (FDD) system (LTE), a time division duplex (TDD) system (LTE), and a universal mobile telecommunication system (UMTS).

[0060] In this application, embodiments are described with reference to a network device and a terminal device. The terminal device includes, but is not limited to, user equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile console, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communications device, a user agent, or a user appliance. The terminal device may communicate with one or more core networks using a radio access network (RAN).For example, the terminal device could be a cell phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device featuring a wireless communication function, a computing device, another processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device on a future 5G network, or a terminal device on a future evolved PLMN network.

[0061] The network device can be a device configured to communicate with the terminal device, and the network device Petition 870250094856, dated 10 / 17 / 2025, page 20 / 116 17 / 46 may include a base station or a network-side device performing the function of a base station. For example, the network device may be a Base Transceiver Station (BTS) in the GSM or CDMA system; a Node B (NB) in the WCDMA system; an Evolved Node B (eNB or eNodeB), a transmit node, or an access point in the LTE system; an in-vehicle device or a wearable device; or a network device in a future 5G network.

[0062] The following describes the technical solutions in the implementations of this application with reference to the attached drawings.

[0063] Figure 1 is a schematic flowchart of a data transmission method 100 according to an embodiment of this request. As shown in Figure 1, method 100 includes the following steps.

[0064] S110. Um dispositivo terminal determina uma estrutura de sinal de um sinal de uplink com base em um status de uplink do dispositivo terminal e em um tipo de dados de destino.

[0065] Specifically, the terminal device can select different signal structures for uplink data transmission, based on a synchronization status of the terminal device and a specific type of data that needs to be sent. The synchronization status of the first terminal can be an uplink out-of-sync state or an uplink synchronized state.

[0066] In other words, when receiving uplink data, a network device will detect and receive the uplink data based on the signal structure of the uplink signal, and send feedback information about the data.

[0067] It should be understood that the signal structure of the uplink signal in this embodiment of this application may be used to indicate a type of signal included in the uplink data. Specifically, when the Petition 870250094856, dated 10 / 17 / 2025, page 21 / 116 18 / 46 If a terminal device needs to send data or data feedback information to the network device, the terminal device may send uplink data based on the determined signal structure of the uplink signal; and the network device will determine the specific signal type in the terminal device's uplink data based on the signal structure of the uplink signal.

[0068] It should be understood that the uplink status in this embodiment of this application can be classified into a synchronized uplink state and an out-of-synchronization uplink state. Specific ways of representing the synchronized uplink state and the out-of-synchronization uplink state are not limited in this embodiment of this application. For example, the out-of-synchronization uplink state may indicate that the terminal device is in an inactive mode (meaning that there is no Radio Resource Control connection, and uplink synchronization with the base station is not implemented); or it may indicate that the terminal device is in a connected mode and has a Radio Resource Control connection, but loses uplink synchronization with the base station.

[0069] For ease of understanding, the following uses examples to classify and describe signals and data in the uplink transmission performed by the terminal device in this embodiment of this application.

[0070] A first signal is a sequence or signal that is used to implement uplink synchronization between the terminal device and the network device, for example, a sequence of random access preambles in the LTE system. Based on a signal detection status, the network device can determine a terminal synchronization parameter, for example, a timing advance (TA).

[0071] A second signal will be used by the network device when receiving data, to determine the terminal device. Petition 870250094856, dated 10 / 17 / 2025, page 22 / 116 19 / 46 corresponding to the data. This is the terminal detects the signal to determine if the terminal sent the uplink data. For example, the second signal is an identification signal or a sequence from the terminal device.

[0072] A third signal is a sequence used by the network device to estimate an uplink channel between the terminal device and the network device, for example, a pilot sequence or a De-Modulation Reference Signal (DMRS) in LTE. The network device may perform channel estimation to demodulate the data sent by the terminal.

[0073] The first data is a payload that can be demodulated and received by the network device only after the network device performs channel estimation using a third signal, for example, an application layer data packet, a terminal buffer status report, a scheduling request, or terminal device identification information (e.g., an ID).

[0074] Second data is a signal or sequence that can be received by the network device without performing channel estimation using a third signal, for example, a signal or sequence used to implement a function of a scheduling request.

[0075] It should be understood that the first signal, the second signal, the third signal, the first data, and the second data in this embodiment of this application may be signals or sequences used to implement the preceding functions, or they may be signals or sequences used to implement other functions. The scope of protection of this embodiment of this application will mainly cover a logical relationship between the signals and the data, and specific functions of the signals and the data are not limited in this embodiment of this application. Petition 870250094856, dated 10 / 17 / 2025, page 23 / 116 20 / 46

[0076] It should also be understood that at least two of the first signal, second signal, third signal, and second data are the same sequence or the same signal in this embodiment of this request. In other words, the terminal device can send only one signal or sequence to the network device to implement functions of at least two of the first signal, second signal, third signal, and second data described above. The number of signals and the specific form of signal representation are not limited in this embodiment of this request.

[0077] For example, the second signal and the third signal may be the same pilot sequence.

[0078] According to the data transmission method in this embodiment of this application, when the terminal device transmits data, the terminal device can determine the signal structure of the uplink signal based on the data type and synchronization status, and transmit the uplink data based on the uplink transmission signal structure. This can effectively reduce delay and signaling overhead.

[0079] The following describes in detail the signal structures of uplink signals in this embodiment of this application using the first signal, the second signal, the third signal, the first data and the second data as examples. Specifically, the signal structures can be classified into the following four types.

[0080] Signal structure 1 is the first signal, and is used to implement only uplink synchronization between the terminal and the network device.

[0081] A signal 2 structure includes the first signal, the second signal, the third signal, and the first data, and is used to implement uplink synchronization between the terminal and a network device and to send the first data. Petition 870250094856, dated 10 / 17 / 2025, page 24 / 116 21 / 46

[0082] A signal structure 3 includes the first signal, the second signal and the second data, and is used to implement uplink synchronization between the terminal and the network device and to send the second data.

[0083] A signal structure 4 includes the second signal, the third signal and the first data, and is used to send the first data.

[0084] Figure 2 is a schematic block diagram of a time-frequency resource used to send a signal and / or data according to a realization of this request.

[0085] As shown in Figure 2, in this embodiment of this application, the time-frequency resources used to send signals and / or data may be the same or different, and may be consecutive or non-consecutive in the time domain, may be consecutive or non-consecutive in the frequency domain, or may be consecutive or non-consecutive in both the time and frequency domains. B1 and B2 are used to indicate different frequency domain resources, and T1 and T2 are used to indicate different time domain resources.

[0086] For example, in signal structure 1, a time-frequency resource used to send the first signal may be the same as or different from a time-frequency resource used to send the second and / or third signal; and may be consecutive or non-consecutive in the time domain, may be consecutive or non-consecutive in the frequency domain, or may be consecutive or non-consecutive in both the time and frequency domains.

[0087] For another example, in signal structure 2, a time-frequency resource used to send the first signal and a time-frequency resource used to send the first data may be consecutive or non-consecutive in the time domain, may be consecutive or non-consecutive in the frequency domain, or may be Petition 870250094856, dated 10 / 17 / 2025, page 25 / 116 22 / 46 consecutive or non-consecutive, both in the time domain and in the frequency domain.

[0088] By yet another example, in signal structure 3, a time-frequency resource used to send the first signal and a time-frequency resource used to send the second data may be consecutive or non-consecutive in the time domain, may be consecutive or non-consecutive in the frequency domain, or may be consecutive or non-consecutive in both the time and frequency domains.

[0089] By yet another example, in signal structure 4, a time-frequency resource used to send the second signal and / or the third signal and a time-frequency resource used to send the first data may be consecutive or non-consecutive in the time domain, may be consecutive or non-consecutive in the frequency domain, or may be consecutive or non-consecutive in both the time and frequency domains.

[0090] Optionally, in this embodiment of this request, the second signal may be configured with a time-frequency resource equal to that configured for the first data. That is, the second signal is linked to the time-frequency resource for the first data, to be sent on the time-frequency resource for the first data. It should be understood that, alternatively, the second signal in this embodiment of this request may be linked to a time-frequency resource for another signal or other data, for example, the third signal, the first signal or the second data, to be sent to the time-frequency resource for another signal or other data.

[0091] In S110, the terminal device can determine the specific uplink transmission signal structure based on synchronization status and data type.

[0092] For example, if the terminal device is in the off state Petition 870250094856, dated 10 / 17 / 2025, page 26 / 116 If the 23 / 46 synchronization and data type are the first data type, the uplink transmission signal structure can be signal structure 1 or signal structure 2.

[0093] For another example, if the terminal device is in the out-of-sync state and the data type is second data, the uplink transmission signal structure could be signal structure 1 or signal structure 3.

[0094] For yet another example, if the terminal device is in the synchronized state and the data type is first data, the uplink transmission signal structure could be signal structure 4.

[0095] For yet another example, if the terminal device is in the synchronized state and the data type is not first data, no signal structure will be sent.

[0096] Optionally, the terminal device can determine the synchronization status based on whether a timer expires, or the network device can inform the terminal device that a synchronization parameter needs to be retrieved again. This is not specifically limited in this embodiment of this request.

[0097] With reference to S120, S130 and S140 in embodiment 100 of the method, the following describes in detail a specific implementation of uplink transmission between the terminal device and the network device for the four previous signal structures.

[0098] S120. The terminal device sends the uplink signal to a network device.

[0099] S130. The network device detects a first signal on the uplink signal.

[00100] S140. The network device receives the uplink signal based on a first signal detection result, and / or responds to the uplink signal based on the first signal detection result. Petition 870250094856, dated 10 / 17 / 2025, page 27 / 116 24 / 46

[00101] In one embodiment, if the terminal device determines that the signal structure of the uplink signal is signal structure 1, the terminal device will only need to perform uplink synchronization.

[00102] Specifically, the terminal device determines, based on the first mapping relationship information and signal structure 1, a first signal corresponding to signal structure 1 from a plurality of signals used to implement a first signal function, and sends the first signal to the network device; that is, the uplink data sent by the terminal device includes only the first signal. In other words, after the network device receives the first signal, the first signal can be used to implicitly inform the network device of a specific uplink transmission signal structure corresponding to the first signal.

[00103] The network device can determine, based on the first detected signal and the first mapping relationship, that the signal structure of the uplink signal corresponding to the first signal is signal structure 1, that is, the uplink data includes only the first signal. In this case, the network device determines a synchronization parameter based on the first signal sent by the terminal device, and sends the response information to the terminal device, where the response information includes the synchronization parameter.

[00104] Optionally, the response information additionally includes grant information, for example, a time-frequency resource and a modulation and encoding scheme, i.e., to be used by the terminal device for the next transmission.

[00105] It should be noted that, when the first signal is discovered, the network device does not actually need to recognize a specific terminal sending the first signal. The network device only needs to determine, based on the first signal found, a TA. Petition 870250094856, dated 10 / 17 / 2025, page 28 / 116 25 / 46 corresponding to the first signal, and then discard the TA. The discarded content includes two parts: information (such as an index) that can identify the first signal encountered, and the TA corresponding to the first signal. The terminal side can effectively receive a plurality of TAs, where each TA corresponds to a first signal. The terminal only needs to find the TA corresponding to the first signal sent by the terminal.

[00106] In this embodiment of this application, to avoid a first signal conflict between terminal devices, the network device optionally configures a first signal for each terminal device.

[00107] Optionally, the first mapping relationship information includes a match between the first signal and the signal structure of the uplink signal, and / or a match between a resource used to transmit the first signal and the signal structure of the uplink signal.

[00108] The following describes in detail the first mapping relationship in this embodiment of this application with reference to Figures 3 and 5.

[00109] In one embodiment, the terminal device implicitly indicates the signal structure of the uplink signal using the first signal.

[00110] Specifically, the network device classifies sequences used to implement the first signal function into at least three types: a first type, a second type, and a third type. Each type includes at least one sequence. The network device establishes, beforehand, a mapping relationship between the types obtained through classification and a signal structure.

[00111] Figure 3 shows a mapping relationship between a first signal and an uplink transmission signal structure according to a realization of this request. Petition 870250094856, dated 10 / 17 / 2025, page 29 / 116 26 / 46

[00112] Specifically, as shown in Figure 3, a first signal 1 in a first type corresponds to a signal structure 1, a first signal 2 in a second type corresponds to a signal structure 2, a first signal 3 in a third type corresponds to a signal structure 3, and a signal structure 4 will be used when there is no first signal.

[00113] Specifically, if the terminal device selects signal structure 1, the terminal device will determine, based on signal structure 1, that a corresponding type is the first type; it will select, as a first signal, a sequence from a sequence in the first type according to a rule, for example, in a random selection manner or another manner; and it will send the first signal to the network device. The network device detects the first signal. If the sequence is found to belong to the first type, the network device can determine, based on a predefined mapping relationship, that a signal structure of an uplink signal from the terminal device is signal structure 1. In other words, only the first signal is included.

[00114] In one embodiment, the terminal device implicitly indicates the signal structure of the uplink signal using a first resource used to transmit the first signal.

[00115] Specifically, the terminal device will implicitly indicate the signal structure of the uplink signal by mapping selected first signals to different time-frequency resources. Optionally, the network device classifies the locations of the time-frequency resources used for sending the first signals, and establishes a correspondence between a time-frequency resource location and a signal structure. For example, the network device classifies the locations of the time-frequency resources used to send the first signals into at least three types: a first Petition 870250094856, dated 10 / 17 / 2025, page 30 / 116 27 / 46 type, a second type and a third type, where the three types of time-frequency resource locations partially overlap or do not overlap at all; and establishes a mapping relationship between the types obtained through classification and a signal structure.

[00116] Figure 4 shows a mapping relationship between a resource used to transmit a first signal and a structure of an uplink transmission signal according to a realization of this request.

[00117] Specifically, as shown in Figure 4, a time-frequency resource 1, used to transmit a first signal 1, in a first type corresponds to a signal structure 1; a time-frequency resource 2, used to transmit a first signal 1, in a second type corresponds to a signal structure 2; and a time-frequency resource 3, used to transmit a first signal 1, in a third type corresponds to a signal structure 3.

[00118] Specifically, if sending signal structure 1 is selected, the first terminal will send the first signal at a time-frequency resource location of the first type. The network device detects, at a possible time-frequency resource location, the first signal sent by the terminal device. If it is discovered that the terminal device sends the first signal at a time-frequency resource of the first type, the network device can determine, based on the predefined mapping relationship, that a signal structure of an uplink signal from the terminal device is signal structure 1. In other words, only the first signal is included.

[00119] It should be understood that, in this embodiment of this request, the terminal device can classify first signals into three types that are used to indicate signal structure 1, signal structure 2 and Petition 870250094856, dated 10 / 17 / 2025, page 31 / 116 28 / 46 signal structure 3, respectively; or it can establish a one-to-one correspondence between a first signal and a signal structure of an uplink signal. This is not specifically limited in this embodiment of this request.

[00120] In one embodiment, as shown in Figure 5, the terminal device may alternatively indicate a signal structure of an uplink signal using a first signal and a resource used to transmit the first signal.

[00121] Specifically, as shown in Figure 5, a time-frequency resource 1 used to transmit a first signal 1 corresponds to a signal structure 1; a time-frequency resource 2 used to transmit a first signal 1 corresponds to a signal structure 2; and a time-frequency resource 2 used to transmit a first signal 2 corresponds to a signal structure 3.

[00122] According to the data transmission method in this embodiment of this request, before data demodulation, the network device can determine the signal structure, used by the terminal device, of the uplink signal, and then use a corresponding receiving method. This solves a problem of small latency and excessively high signaling overheads in a small packet eMBB scenario, an mMTC scenario, and an URLLC scenario.

[00123] In another embodiment, if the terminal device determines that the signal structure of the uplink signal is signal structure 2, the terminal device will need to perform uplink synchronization and send the first data.

[00124] Specifically, the terminal device determines, based on the first mapping relationship information and signal structure 2, the first signal corresponding to signal structure 2; it determines the second signal and the third signal based on a second relationship. Petition 870250094856, dated 10 / 17 / 2025, page 32 / 116 29 / 46 mapping and the first signal; and sends the uplink data to the network device, where the uplink data includes the first signal, the second signal, the third signal, and the first data.

[00125] Specifically, after finding the first signal, the network device can determine, based on the first signal and the first mapping relationship information, that the signal structure of the uplink signal corresponding to the first signal is signal structure 2, that is, determine that the uplink data corresponding to the first signal specifically includes the first signal, the second signal, the third signal, and the first data. In this case, the network device determines, based on the second mapping relationship information and the first signal, the second and third signals that correspond to the first signal, and demodulates and receives the first data based on the second and third signals.

[00126] The network device determines a synchronization parameter based on the first signal and sends the response information to the terminal device. The response information includes the synchronization parameter and feedback information on the result of receiving the first data, for example, information indicating whether the first data was correctly received or incorrectly received. Optionally, the response information additionally includes grant information, for example, a time frequency resource and a modulation and encoding scheme, i.e., to be used by the terminal device for the next transmission.

[00127] Optionally, the second mapping relationship information includes a match between the second signal and the first signal, and a match between the first signal and at least the third signal, an attribute information of the first data or an attribute information of the second data, where the second signal is used to identify the terminal device. Petition 870250094856, dated 10 / 17 / 2025, page 33 / 116 30 / 46

[00128] Optionally, the attribute information may include at least one cyclic prefix length of an orthogonal frequency-division multiplexing (ODM) symbol, an OFDM symbol feature, or an MCS modulation and coding scheme.

[00129] It should be understood that the attribute information in this embodiment of this application may alternatively be energy to send a signal / data, for example, energy for the second data or energy for the second information. This is not specifically limited in this embodiment of this application.

[00130] In this implementation of this request, to ensure the reception of a signal and data in the out-of-sync state, optionally, a relatively long cyclic prefix may be used to send the second signal, the third signal, the second data and / or the first data.

[00131] In this implementation of this request, after receiving the data, the network device needs to recognize a terminal that sends the data. The second mapping relationship can be established to determine the second signal and / or the third signal in this implementation of this application. However, this is not limited to this implementation of this request.

[00132] For example, the terminal device can package identification information, such as a unique terminal device identifier, in data, and send the identification information as part of the data to the network device. In this way, after correctly receiving the data, the network device can recognize the terminal device from which the data originates.

[00133] In this implementation of this request, the network device can determine the second signal and the third signal based on the second mapping relationship information, and receive the first data using the second and third signals. This effectively reduces the Petition 870250094856, dated 10 / 17 / 2025, p. 34 / 116 31 / 46 complexity for the network device, reduces latency, and improves reliability.

[00134] In another embodiment, if the terminal device determines that the uplink signal structure is signal structure 3, that is, if the terminal device is in the uplink out-of-sync state, the terminal device will only need to send the second data to the network device.

[00135] Specifically, the terminal device determines, based on the first mapping relationship information and signal structure 3, the first signal corresponding to signal structure 3; determines the second signal based on the second mapping relationship and the first signal; and sends the uplink data to the network device, where the uplink data includes the first signal, the second signal, and the second data.

[00136] Specifically, after finding the first signal, the network device can determine, based on the first signal and the first mapping relationship information, that the signal structure of the uplink signal corresponding to the first signal is signal structure 3, that is, determine that the uplink data corresponding to the first signal specifically includes the first signal, the second signal, and the second data. In this case, the network device determines, based on the second mapping relationship information and the first signal, the second signal corresponding to the first signal, and receives the second data based on the second signal.

[00137] The network device determines a synchronization parameter based on the first signal and sends the response information to the terminal device, where the response information includes the synchronization parameter. Optionally, the response information additionally includes grant information, for example, a time-frequency resource and a modulation and demodulation scheme. Petition 870250094856, dated 10 / 17 / 2025, p. 35 / 116 32 / 46 encoding, that is, to be used by the terminal device for the next transmission.

[00138] Optionally, the reply message may additionally include feedback information from the second data. For example, the second data is a scheduling request sequence or signal, and the reply message additionally includes feedback information from the scheduling request sequence or signal.

[00139] In this embodiment of this request, the network device can determine the second signal based on the second mapping link information, and receive the second data using the second signal. This effectively reduces complexity for the network device, reduces latency, and improves reliability.

[00140] In another embodiment, if the terminal device determines that the signal structure of the uplink signal is signal structure 4, that is, if the terminal device is in an uplink connected state, the terminal device will only need to send the first data to the network device.

[00141] Specifically, the terminal device determines, based on the first mapping relationship information and signal structure 4, that signal structure 4 does not include the first signal; determines the second signal based on the second mapping relationship and the first signal; and sends the uplink data to the network device, where the uplink data includes the second signal, the third signal, and the first data.

[00142] Specifically, after no first signal is found, the network device can determine, based on the first signal and the first mapping relationship information, that the signal structure of the uplink signal is signal structure 4, that is, determine that the uplink data specifically includes the second signal, the Petition 870250094856, dated 10 / 17 / 2025, page 36 / 116 33 / 46 third signal and second data. In this case, the network device determines, based on the third mapping relationship information, the second signal and the third signal, and receives the first signal based on the second and third signals.

[00143] The network device sends the response information to the terminal device. The response information includes a result of receiving the first data, for example, whether the first data was correctly received or incorrectly received. Optionally, the response information additionally includes grant information, for example, a time-frequency resource and a modulation and encoding scheme, i.e., to be used by the terminal device for the next transmission.

[00144] Optionally, the third mapping relationship information includes a match between the attribute information of the first data, the second signal, and the third signal.

[00145] In this implementation of this request, the network device can determine the second signal based on the third mapping link information, and receive the second data using the second signal. This effectively reduces complexity for the network device, reduces latency, and improves reliability.

[00146] In this embodiment of this application, the terminal device can determine the signal structure of the uplink signal based on the first signal and the first mapping relationship information, and there is also a second mapping relationship information between the signal in the uplink data and the first signal.

[00147] In other words, the network device can determine, based on the first detected signal and the first mapping relationship information, the signal structure of the uplink signal corresponding to the first signal; and it can determine, based on the second mapping relationship information, the second and / or third signal. Petition 870250094856, dated 10 / 17 / 2025, p. 37 / 116 34 / 46 signal used to receive the data.

[00148] In this implementation of this request, the network device can determine, based on the first mapping relationship information, that the uplink transmission signal structure is signal structure 4, and receive the first data based on signal structure 4. This effectively reduces complexity for the network device, reduces latency, and improves reliability.

[00149] It should be noted that, according to the data transmission method in this embodiment of this request, the network device can receive the uplink data without blind detection, so that a processing procedure is simplified. This can effectively improve data processing efficiency and reduce latency.

[00150] Specifically, if the second signal and the third signal are the same pilot sequence, the network device will pre-allocate one pilot to each terminal, and the terminal devices will correspond to different pilots. The network device allocates three preambles (P_i1, P_i2, and P_i3) to the terminal device, where the three preambles correspond respectively to signal structure 1, signal structure 2, and signal structure 3. It is assumed that the number of terminal devices is N = 5. When a signal structure of an uplink signal from terminal device 1 is signal structure 1, a signal structure of an uplink signal from terminal device 2 will be signal structure 2, a signal structure of an uplink signal from terminal device 3 will be signal structure 3, a signal structure of an uplink signal from terminal device 4 will be signal structure 4, and terminal device 5 will not perform the transmission.

[00151] If P_11 is discovered, the network device will determine that the signal structure of the uplink signal from terminal device 1 is signal structure 1, and will no longer detect R_1. If P_22 is discovered,... Petition 870250094856, dated 10 / 17 / 2025, page 38 / 116 35 / 46 The network device will determine that the signal structure of the uplink signal from terminal device 2 is signal structure 2, detect R_2 using a long cyclic prefix, perform channel estimation, and receive the first data. If P_33 is discovered, the network device will determine that the signal structure of the uplink signal from terminal device 3 is signal structure 3, detect R_3 using a long cyclic prefix, detect R_4 and R_5 using a short cyclic prefix, perform the corresponding channel estimation, and receive the first data.

[00152] If no initial mapping relationship information is established in this realization of this request, the network device will receive the data via blind detection during lease-free transmission. Specifically, the network device must first detect, in a time-frequency resource, N TAs using N preambles, and then attempt to detect N terminal devices using N pilot sequences. Furthermore, the network device does not recognize the cyclic prefixes used by the terminal device to send another signal and other data that are different from the preambles, and consequently fails to detect and receive.

[00153] In contrast, according to the data transmission method in this embodiment of this request, before receiving the data, the network device can determine a specific signal structure sent by the terminal, and then use a corresponding receiving method. This avoids the complexity and risk to reliability that are caused by completely blind detection performed by the base station, and implements transmission with a small delay and few signaling overheads in the small packet eMBB scenario, in the mMTC scenario and in the URLLC scenario.

[00154] Therefore, based on the first mapping relationship information in this implementation of this request, the network device can Petition 870250094856, dated 10 / 17 / 2025, page 39 / 116 36 / 46 receives uplink data without blind detection, thus simplifying the processing procedure. This can effectively improve data processing efficiency and reduce latency.

[00155] In this execution of this request, before detecting the first signal, the network device may send at least the first mapping relationship information, the second mapping relationship information, or the third mapping relationship information to the terminal device.

[00156] The following describes a network device and a terminal device in the embodiments of this application with reference to Figures 6 and 9.

[0090] Figure 6 is a schematic block diagram of a network device for data transmission according to an embodiment of this request. As shown in Figure 6, the network device in this embodiment of this request includes:

[0091] a 210 detection unit, configured to detect a first signal in an uplink signal;

[0092] a 220 processing unit, configured to determine a signal structure of the uplink signal based on a first signal detection result; and

[0093] a 230 transceiver unit, configured to receive the uplink signal based on the signal structure, and / or respond to the uplink signal based on the signal structure.

[0094] Optionally, if the network device finds the first signal, processing unit 220 will be specifically configured to determine the signal structure of the uplink signal based on the first mapping relationship information and the first signal.

[0095] The first mapping relationship information includes a match between the first signal and the signal structure, and / or a Petition 870250094856, dated 10 / 17 / 2025, page 40 / 116 37 / 46 correspondence between a resource used to transmit the first signal and the signal structure.

[0096] Optionally, processing unit 220 is specifically configured to determine, based on the first mapping relationship information and the first signal, that the uplink signal includes only the first signal.

[0097] Transceiver unit 230 is specifically configured to send a reply message, wherein the reply message includes feedback information from the first signal.

[0098] Optionally, processing unit 220 is specifically configured to determine the terminal device based on the second mapping relationship information and the first signal.

[0099] The second mapping relationship information includes a match between a second signal and the first signal, and a match between the first signal and at least one third signal, an attribute information of the first data or an attribute information of the second data, where the second signal is used to identify the terminal device.

[00100] Optionally, processing unit 220 is specifically configured to determine, based on the first mapping relationship information, the second mapping relationship information, and the first signal, that the uplink signal includes the first signal, the second signal, the third signal, and the first data.

[00157] Transceiver unit 230 is specifically configured to determine the third signal and attribute information of the first data based on the second mapping relationship information and the first signal; receive the first data based on the second signal, the third signal, and the attribute information of the first data; and send a reply message to the terminal device, where the reply message includes feedback information from the first signal. Petition 870250094856, dated 10 / 17 / 2025, page 41 / 116 38 / 46 and feedback information from the initial data.

[00158] Optionally, processing unit 220 is specifically configured to determine, based on the first mapping relationship information, the second mapping relationship information, and the first signal, that the uplink signal includes the first signal, the second signal, and the second data.

[00159] The 230 transceiver unit is specifically configured to: receive the second data based on the second signal; and send a reply message, where the reply message includes feedback information from the first signal.

[00160] Optionally, processing unit 220 is specifically configured to: if detection unit 210 does not find any first signal, determine, based on the third mapping relationship information, that the uplink signal includes a second signal, a third signal, and first data.

[00161] The 230 transceiver unit is specifically configured to: receive the first data based on the second and third signals, and send a reply message to the terminal device, where the reply message includes feedback information from the first data.

[00162] Optionally, the third mapping relationship information includes a match between the attribute information of the first data, the second signal, and the third signal.

[00163] Optionally, the attribute information includes at least one cyclic prefix length of an orthogonal frequency-division multiplexing (ODM) symbol, an OFDM symbol feature, or an MCS modulation and coding scheme.

[00164] Optionally, the reply message additionally includes uplink grant information from the terminal device.

[00165] Optionally, the first sign is used for the Petition 870250094856, dated 10 / 17 / 2025, page 42 / 116 39 / 46 Uplink synchronization between the terminal device and the network device, the second signal is used to identify the terminal device, the third signal is used to estimate an uplink channel between the terminal device and the network device, the first data are application layer data, and the second data are not application layer data.

[00166] Optionally, at least two of the first signal, the second signal, the third signal, and the second data are the same sequence or the same signal.

[00167] Optionally, before the detection unit 210 detects the first signal, the transceiver unit 230 is additionally configured to send at least the first mapping relationship information, the second mapping relationship information, or the third mapping relationship information to the terminal device.

[00168] It should be understood that network device 200 in this embodiment of this application may correspond to the network device in the embodiment of the method of this application. Furthermore, operations and / or functions of the modules and other modules in network device 200 are intended to implement corresponding procedures of method 100. For the sake of brevity, the details will not be described again below.

[00169] It should be noted that, in this embodiment of this application, the detection unit 210 and the processing unit 220 can be implemented by a processor, and the transceiver unit 230 can be implemented by a transceiver. As shown in Figure 7, a network device 300 can include a processor 310, a transceiver 320, and a memory 330. The memory 330 can be configured to store indication information, and can be additionally configured to store code, an instruction, and Petition 870250094856, dated 10 / 17 / 2025, page 43 / 116 40 / 46 similar tasks that will be executed by the 310 processor.

[00170] The components of the 300 network device are connected using a bus system. In addition to a data bus, the bus system includes a power bus, a control bus, and a status signal bus.

[00101] Network device 300 shown in Figure 7 or network device 200 shown in Figure 6 can implement the processes implemented by the network device in the embodiment of the method in Figure 1. To avoid repetition, the details will not be described here again.

[00102] Figure 8 is a schematic block diagram of a 400 terminal device for data transmission according to an embodiment of this application. As shown in Figure 8, the 400 terminal device in this embodiment of this application includes:

[00103] a 410 processing unit, configured to determine a signal structure of an uplink signal based on an uplink status and a destination data type; and

[00104] a 420 transceiver unit, configured to send the uplink signal based on the first mapping relationship information and the signal structure of the uplink signal.

[00105] Optionally, the first mapping relationship information includes:

[00106] a match between a first signal and the signal structure of the uplink signal, and / or a match between a resource used to transmit the first signal and the signal structure of the uplink signal.

[00107] Optionally, the uplink status is an out-of-sync uplink state.

[00108] Optionally, the destination data is empty; and processing unit 410 is specifically configured for Petition 870250094856, dated 10 / 17 / 2025, page 44 / 116 41 / 46 determine, based on the first mapping relationship information, that the uplink signal includes only the first signal.

[00109] Optionally, before the transceiver unit sends the uplink signal based on the initial mapping relationship information and the signal structure of the uplink signal, the 410 processing unit is additionally configured to

[00110] determine a second signal based on the second mapping relationship information and the first signal, where the second mapping relationship information includes a match between the second signal and the first signal, and a match between the first signal and at least one third signal, an attribute information of the first data or an attribute information of the second data, and the second signal is used to identify the terminal device.

[00111] Optionally, the target data is application layer data; and processing unit 410 is specifically configured to determine, based on the first mapping relationship information and the second mapping relationship information, that the uplink signal includes the first signal, the second signal, the third signal, and the first data.

[00112] Optionally, the destination data is not application layer data; and processing unit 410 is specifically configured to determine, based on the first mapping relationship information and the second mapping relationship information, that the uplink signal includes the first signal, the second signal, and the second data.

[00113] Optionally, the uplink status is a synchronized uplink state, and the destination data is application layer data; and processing unit 410 is specifically configured to

[00114] determine, based on the first mapping relationship information and the third mapping relationship information, that Petition 870250094856, dated 10 / 17 / 2025, page 45 / 116 42 / 46 The uplink signal includes a second signal, a third signal, and initial data.

[00115] Optionally, the third mapping relationship information includes a match between the attribute information of the first data, the second signal, and the third signal.

[00116] It should be understood that terminal device 400, in this embodiment of this request, may correspond to the terminal device in the implementation of the method of this request. Furthermore, the operations and / or functions of the modules and other modules on terminal device 400 are intended to implement the corresponding procedures of method 100. For the sake of brevity, the details will not be described here again.

[00117] It should be noted that, in this embodiment of this application, the processing unit 410 can be implemented by a processor, and the transceiver unit 420 can be implemented by a transceiver. As shown in Figure 9, a terminal device 500 can include a processor 510, a transceiver 520, and a memory 530. The memory 530 can be configured to store indication information, and can be additionally configured to store code, instructions, and the like that will be executed by the processor 510.

[00118] The components of the terminal device 500 are connected using a bus system. In addition to a data bus, the bus system includes a power bus, a control bus, and a status signal bus.

[00119] In an implementation process, the steps of the previous methods can be completed using a hardware integrated logic circuit in the processor, or using an instruction in the form of software. The steps of the methods described with reference to the embodiments of this application can be directly executed by a Petition 870250094856, dated 10 / 17 / 2025, page 46 / 116 43 / 46 hardware processor, or they can be executed by a combination of hardware in the processor and a software module. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, read-only programmable memory, electrically erasable programmable memory, or a register. The storage medium is located in memory. The processor executes the instruction in memory, and completes the steps of the previous methods in combination with the hardware in the processor. To avoid repetition, the details will not be described again here.

[00120] The terms used in the embodiments of this application and in the accompanying claims are intended only to describe specific embodiments, but are not intended to limit this application.

[00121] For example, the term and / or in the realizations of this request describes only an association relationship to describe associated objects and represents that there can be three relationships. Specifically, A and / or B can represent the following three cases: Only A exists, both A and B exist, and only B exists. Furthermore, the / character in this specification generally indicates a relationship of or between associated objects.

[00122] For another example, the preceding singular form of a / an, the / aeo / a used in the embodiments of this application and in the attached claims is intended to include a plural form unless other meanings are clearly indicated in a context.

[00171] For yet another example, terms such as first, second, and third may be used in embodiments of this application to describe various messages, requests, and endpoints, but messages, requests, and endpoints should not be limited to these terms. These terms are used only to distinguish between Petition 870250094856, dated 10 / 17 / 2025, p. 47 / 116 44 / 46 messages, requests and terminals. For example, a first terminal may also be referred to as a second terminal, and similarly a second terminal may also be referred to as a first terminal, provided that this does not deviate from the scope of the concretizations of this request.

[00172] For yet another example, depending on the context, the term "se," as used here, can be interpreted as "while," "when," "in response to determination," or "in response to detection." Similarly, depending on the context, the phrases "se que determina" or "se que detecta" (a stated condition or event) can be interpreted as "when the determination occurs," "in response to the determination," "when the detection occurs (the stated condition or event)," or "in response to detection (the stated condition or event)."

[00173] Those skilled in the art may note that algorithmic units and steps in the examples described with reference to the embodiments described in this specification may be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed by hardware or software depends on specific applications and design constraints of the technical solutions. Those skilled in the art may use a different method to implement the described functions for each specific application, but it should not be considered that the implementation exceeds the scope of this application.

[00174] It may be clearly understood by one skilled in the art that, for ease and brevity of description, for detailed working processes of the preceding system, apparatus, and unit, reference may be made to the corresponding processes in embodiments of the preceding method. The details will not be described here again. Petition 870250094856, dated 10 / 17 / 2025, page 48 / 116 45 / 46

[00175] In the various embodiments provided in this application, it will be understood that the system, apparatus, and method described may be implemented in other ways. For example, the embodiments of the described apparatus are merely illustrative. For example, the division into units is merely a logical function division and may be another division in the actual implementation. For example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted or may not be implemented. Furthermore, the mutual couplings or direct couplings or communication connections shown or discussed may be implemented through some interfaces. Indirect couplings or communication connections between the apparatuses or units may be implemented in electrical, mechanical, or other forms.

[00176] The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed across a plurality of network units. Some or all of the units may be selected depending on a current requirement, to achieve the objectives of the embodiments of this application.

[00177] Furthermore, functional units in the embodiments of this application may be integrated into a processing unit, or each of the units may exist physically on its own, or at least two units may be integrated into one unit.

[00178] When functions are implemented in the form of a functional unit of software and sold or used as a standalone product, the functions may be stored on a computer-readable storage medium. Based on such understanding, the technical solutions of this application essentially, or the part Petition 870250094856, dated 10 / 17 / 2025, page 49 / 116 46 / 46 which contributes to the prior art, or some of the technical solutions may be implemented in the form of a software product. The computer software product is stored on a storage medium, and includes various instructions to instruct a computer device (which may be a personal computer, a server, a network device, or similar) to perform all or some of the steps of the methods described in the embodiments of this application. The prior storage medium includes any medium that can store program code, such as a USB flash drive, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

[00179] The preceding content consists merely of specific implementations of this application, but is not intended to limit the scope of protection of this application. Any variation or substitution readily perceived by one skilled in the art within the technical scope described in this application shall be within the scope of protection of this application. Therefore, the scope of protection of this application shall be subject to the scope of protection of the claims. Petition 870250094856, dated 10 / 17 / 2025, page 50 / 116

Claims

1 / 6 CLAIMS 1. Data transmission method, characterized in that the method comprises: detecting (130), by a network device, a first signal in an uplink signal, wherein the first signal is used for uplink synchronization between a terminal device and the network device; determining (140), by the network device, a signal structure of the uplink signal based on a detection result of the first signal, wherein the signal structure of the uplink signal is used to indicate a type of signal included in the uplink signal; and receiving (140), by the network device, the uplink signal based on the signal structure, and / or responding to the uplink signal based on the signal structure;wherein if the network device finds the first signal, the determination (140) by the network device of a signal structure of the uplink signal based on a first signal detection result comprises: determining, by the network device, the signal structure based on first mapping relationship information and the first signal, wherein the first mapping relationship information comprises: a match between a resource used to transmit the first signal and the signal structure.

2. Method according to claim 1, characterized in that the determination, by the network device, of the signal structure based on first mapping relationship information and the first signal comprises: determining, by the network device based on the first mapping relationship information and the first signal, that the uplink signal comprises only the first signal; and the reception, by the network device, of the uplink signal based on the signal structure, and / or the response to the uplink signal based on the signal structure comprises: sending, by the network device, a response message to a terminal device, wherein the response message comprises feedback information from the first signal.

3. Method according to claim 1, characterized in that, before the network device (140) receives the uplink signal based on the signal structure, and / or responds to the uplink signal based on the signal structure, the method further comprises: determining, by the network device, a second signal based on second mapping relationship information and the first signal, wherein the second signal is used to identify the terminal device, and wherein the second mapping relationship information comprises: a match between the second signal and the first signal, and a match between the first signal and at least one of a third signal, first data attribute information, and second data attribute information, wherein the uplink signal comprises, in addition to the first signal, at least one of the third signal, first data and second data,and the third signal is used to estimate an uplink channel between the terminal device and the network device, the first data are application layer data, the second data are non-application layer data, and the attribute information comprises: at least one of a cyclic prefix length of an orthogonal frequency division multiplexing symbol, OFDM, an OFDM symbol feature, and a coding and modulation scheme, MCS.

4. Method according to claim 1, characterized in that if the network device does not find any first signal, the determination (140) by the network device of a signal structure of the uplink signal based on a first signal detection result comprises: determining by the network device that the uplink signal comprises: a second signal, a third signal, and first data; and the reception by the network device of the uplink signal based on the signal structure, and / or the response to the uplink signal based on the signal structure comprises: determining by the network device the second signal, the third signal, and attribute information of the first data based on third mapping relationship information; receiving by the network device the first data based on the second signal, the third signal, and the attribute information of the first data;and send, via the network device, a response message to a terminal device, wherein the response message comprises feedback information from the first data; wherein the third mapping relationship information comprises a correspondence between the attribute information of the first data, the second signal, and the third signal.

5. Data transmission method, characterized in that the method comprises: determining (110), by a terminal device, a signal structure of an uplink signal based on an uplink status and a target data type, wherein the uplink status comprises a synchronized uplink state or an out-of-synchronization uplink state, and target data are empty, application layer data, or non-application layer data, and the signal structure of the uplink signal is used to indicate a signal type included in the uplink signal; and wherein when the target data are empty, the determination, by the terminal device, of the signal structure of the uplink signal based on the uplink status and the target data type comprises: determining, by the terminal device based on first mapping relationship information, that the uplink signal comprises only a first signal;or wherein, when the target data is application layer data, the determination, by the terminal device, of the signal structure of the uplink signal based on the uplink status and the type of target data comprises: determining, by the terminal device, a second signal based on second mapping relationship information and the first signal, and determining, by the terminal device based on the first mapping relationship information and the second mapping relationship information, that the uplink signal comprises: the first signal, the second signal, a third signal, and first data;or wherein when the target data is non-application layer data, the determination, by the terminal device, of the signal structure of the uplink signal based on the uplink status and the type of target data comprises: determining, by the terminal device, a second signal based on second mapping relationship information and the first signal, and determining, by the terminal device based on the first mapping relationship information and the second mapping relationship information, that the uplink signal comprises: the first signal, the second signal, and second data; wherein the first signal is used for uplink synchronization Petition 870250094856, 10 / 17 / 2025, p. 54 / 116 5 / 6 between the terminal device and a network device, and wherein the second signal is used to identify the terminal device; and sending (120), by the terminal device, the uplink signal based on the first mapping relationship information and the signal structure of the uplink signal;wherein the first mapping relation information comprises: a correspondence between a resource used to transmit the first signal and the signal structure; and the second mapping relation information comprises: a correspondence between the second signal and the first signal, and a correspondence between the first signal and at least one of the third signal, attribute information of the first data, and attribute information of the second data, wherein the third signal is used to estimate an uplink channel between the terminal device and the network device, the first data is application layer data, the second data is non-application data, and the attribute information comprises: at least one of a cyclic prefix length of an orthogonal frequency division multiplexing symbol, OFDM, an OFDM symbol resource, and a coding and modulation scheme, MCS.

6. Method, according to claim 5, characterized in that the first mapping relation information also comprises a correspondence between the first signal and the signal structure.

7. A method according to claim 5 or 6, characterized in that the uplink status is a synchronized uplink state, and the target data is application layer data; and the determination, by the terminal device, of a signal structure of an uplink signal based on an uplink status and a target data type comprises: determining, by the terminal device based on third-party mapping relationship information, that the uplink signal comprises: a second signal, a third signal, and first data; wherein the third-party mapping relationship information comprises: a correspondence between attribute information of the first data, the second signal, and the third signal.

8. Network device for data transmission (200, 300), characterized in that it is configured to implement the method as defined in any one of claims 1 to 4.

9. Terminal device for data transmission (400, 500), characterized in that it is configured to implement the method as defined in any one of claims 5 to 7.

10. Communications system, characterized in that it comprises a network-side device (200, 300) as defined in claim 8 and a communications terminal device (400, 500) as defined in claim 9. Petition 870250094856, dated 10 / 17 / 2025, p. 56 / 116

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