Uplink signal transmission method and apparatus

Abstract

The present application discloses an uplink signal transmission method and apparatus, wherein the method comprises: a network device sends first information and second information to a terminal, the first information including configuration information of a first carrier and a second carrier, the second carrier being a SUL carrier and a TDD carrier, the second information including indication information for indicating a time domain offset between the first carrier and the second carrier, the first information and the second information being system information, the terminal receiving the first information and the second information, determining the time domain position of the uplink signal according to the time domain offset value, and sending the uplink signal through the first carrier and / or the second carrier. This method can determine the time domain position of sending the uplink signal through the TDD carrier as an auxiliary uplink carrier, thereby improving the accuracy and efficiency of cross-carrier scheduling of the network device.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an uplink signal transmission method and apparatus. Background Art

[0002] With users demanding higher speeds, pursuing peak data rates, and requiring massive, low-latency, and highly reliable communication, leveraging new technologies to enhance uplink transmission capacity and planning new spectrum are essential to meet the needs of 5G application scenarios. To enhance uplink coverage, 5G New Radio (NR) introduces a supplementary uplink carrier (SUL). The main operating frequency band of 5G NR is C-band 3.5GHz. Compared to the typical LTE bands of 1.8GHz and 700MHz, 5G NR operates at a higher frequency (its uplink spectrum can also be called NUL carrier or non-SUL carrier), resulting in greater penetration and distance losses for uplink signal transmission. Its uplink coverage is approximately 14dB less than its downlink coverage. This reduces the success rate of cell-edge users accessing the cell. Low-frequency bands, acting as SUL, can supplement uplink coverage to some extent. Therefore, the SUL spectrum in existing technologies is a pure uplink band, or can be understood as a frequency division duplexing (FDD) UL spectrum.

[0003] However, the SUL spectrum defined by 3GPP is limited, while the TDD spectrum resources allocated to LTE are abundant. If some uplink resources in the TDD bands are used to support SUL operation, the SUL characteristics will be more flexible, thus reducing the SUL's need for pure uplink spectrum. How to better enable TDD to support SUL operation is a problem that urgently needs to be solved. Summary of the Invention

[0004] This application provides an uplink signal transmission method and apparatus to determine the time domain position of uplink signal transmission via TDD carrier based on the time domain offset between the TDD carrier and the first carrier indicated by system information, thereby improving the efficiency of cross-carrier scheduling of network devices.

[0005] In a first aspect, an uplink signal transmission method is provided, the method comprising: a terminal acquiring first information, the first information including configuration information of a first carrier and a second carrier, the second carrier being a SUL carrier and a TDD carrier; the terminal acquiring second information, the second information including indication information for indicating the time domain offset between the first carrier and the second carrier, the first information and the second information being system information; and transmitting an uplink signal through the first carrier and / or the second carrier, the time domain position of the uplink signal transmitted by the second carrier being determined according to the time domain offset.

[0006] In this embodiment, when the TDD carrier is used as an auxiliary uplink carrier, the time-domain offset between the TDD carrier and the NUL carrier is notified via system information. This allows the terminal to accurately determine the time-domain position of the TDD carrier in the idle state, and then transmit the auxiliary uplink carrier at that time-domain position, completing cross-carrier scheduling of the network device. This improves the communication efficiency when the TDD carrier is used as an auxiliary uplink carrier.

[0007] In one possible implementation, after the terminal accesses the network device via the first carrier and / or the second carrier, the method further includes: the terminal receiving a downlink signal transmitted by the second carrier, wherein the first carrier and the second carrier are configured for carrier aggregation; or, the first carrier is configured as the master carrier and the second carrier is configured as the modulated carrier of the first carrier; or, the first carrier is configured as the master carrier and the second carrier is configured as the auxiliary carrier of the first carrier.

[0008] In one possible implementation, the first information and the second information being system information includes: the first information and the second information being the same system information.

[0009] In one possible implementation, the first information and / or the second information is the main information block (MIB), the system information block (SIB), or a public message.

[0010] In one possible implementation, the method further includes determining the time-domain position of the uplink signal transmitted on the second carrier based on the time-domain offset, specifically including: determining a time-domain offset value based on the time-domain offset and the first subcarrier spacing, wherein the first subcarrier spacing is associated with the subcarrier spacing of the first carrier and / or the subcarrier spacing of the second carrier; and determining the time-domain position of transmitting the uplink signal via the second carrier based on the time-domain position of the uplink signal transmitted on the first carrier and the time-domain offset value.

[0011] In one possible implementation, associating the first subcarrier spacing with the subcarrier spacing of the first carrier and / or the subcarrier spacing of the second carrier includes, the first subcarrier spacing being: the subcarrier spacing of the first carrier or the second carrier; or

[0012] The larger of the minimum subcarrier spacing configured by the network device for the first carrier and the minimum subcarrier spacing configured for the second carrier; or the smaller of the maximum subcarrier spacing configured by the network device for the first carrier and the maximum subcarrier spacing configured for the second carrier.

[0013] In one possible implementation, the granularity of the time-domain offset is an orthogonal frequency division multiplexing (OFDM) symbol or time slot.

[0014] Secondly, an uplink signal transmission method is provided, the method comprising: a network device transmitting first information, the first information including configuration information of a first carrier and a second carrier, the second carrier being a SUL carrier and a TDD carrier; the network device transmitting second information, the second information including indication information for indicating the time domain offset between the first carrier and the second carrier, the first information and the second information being system information; the network device receiving an uplink signal through the first carrier and / or the second carrier, the time domain position of the uplink signal in the second carrier being determined according to the time domain offset.

[0015] In one possible implementation, after determining that the terminal accesses the network device via the first carrier and / or the second carrier, the method further includes: configuring the network device to perform carrier aggregation on the first carrier and the second carrier; or configuring the network device to configure the first carrier as the primary modulation carrier and the second carrier as the modulated carrier of the first carrier.

[0016] In one possible implementation, the first information and the second information being system information includes: the first information and the second information being the same system information.

[0017] In one possible implementation, the first system message and / or the second system message are the main information block (MIB), the system information block (SIB), or a common message.

[0018] In one possible implementation, the method further includes determining the time-domain position of the uplink signal transmitted on the second carrier based on the time-domain offset, specifically including: determining a time-domain offset value based on the time-domain offset and the first subcarrier spacing, wherein the first subcarrier spacing is associated with the subcarrier spacing of the first carrier and / or the subcarrier spacing of the second carrier; and determining the time-domain position of receiving the uplink signal on the second carrier based on the time-domain position of the uplink signal transmitted on the first carrier and the time-domain offset value.

[0019] In one possible implementation, the first subcarrier spacing is associated with the subcarrier spacing of the first carrier and / or the subcarrier spacing of the second carrier, including the first subcarrier spacing as:

[0020] The subcarrier spacing of the first carrier or the second carrier; or the larger of the minimum subcarrier spacing configured by the network device for the first carrier and the minimum subcarrier spacing configured for the second carrier; or the smaller of the smaller of the maximum subcarrier spacing configured by the network device for the first carrier and the maximum subcarrier spacing configured for the second carrier.

[0021] In one possible implementation, the granularity of the time-domain offset is an orthogonal frequency division multiplexing (OFDM) symbol or time slot.

[0022] Thirdly, a communication device is provided, characterized in that the device includes a receiving module and a transmitting module, wherein...

[0023] The receiving module is used to acquire first information, which includes configuration information of a first carrier and a second carrier, wherein the second carrier is a SUL carrier and a TDD carrier;

[0024] The receiving module is also used to acquire second information, which includes indication information for indicating the time domain offset between the first carrier and the second carrier. The first information and the second information are system information.

[0025] The transmitting module is used to transmit uplink signals via a first carrier and / or a second carrier, wherein the time domain position of the uplink signal transmitted via the second carrier is determined based on the time domain offset.

[0026] In one possible implementation, the receiving module is further configured to receive downlink signals transmitted by the second carrier, wherein the first carrier and the second carrier are configured for carrier aggregation; or, the first carrier is configured as the master carrier and the second carrier is configured as the modulated carrier of the first carrier.

[0027] In one possible implementation, the first information and the second information being system information includes: the first information and the second information being the same system information.

[0028] In one possible implementation, the first information and / or the second information is the main information block (MIB), the system information block (SIB), or a public message.

[0029] In one possible implementation, the processing module is further configured to determine the time-domain position of the second carrier transmitting the uplink signal based on the time-domain offset, specifically for:

[0030] The time-domain offset value is determined based on the time-domain offset and the first subcarrier spacing, wherein the first subcarrier spacing is associated with the subcarrier spacing of the first carrier and / or the subcarrier spacing of the second carrier;

[0031] The time domain position of the uplink signal transmitted via the second carrier is determined based on the time domain position and time domain offset value of the uplink signal transmitted in the first carrier.

[0032] In one possible implementation, the first subcarrier spacing associated with the subcarrier spacing of the first carrier and / or the subcarrier spacing of the second carrier includes the first subcarrier spacing being:

[0033] The subcarrier spacing of the first carrier or the second carrier; or

[0034] The larger of the minimum subcarrier spacing configured by the network device for the first carrier and the minimum subcarrier spacing configured for the second carrier; or

[0035] The smaller of the maximum subcarrier spacing configured by the network device for the first carrier and the maximum subcarrier spacing configured for the second carrier.

[0036] In one possible implementation, the granularity of the time-domain offset is an orthogonal frequency division multiplexing (OFDM) symbol or time slot.

[0037] Fourthly, a communication device is provided, comprising a transmitting module and a receiving module. The transmitting module is configured to transmit first information, the first information including configuration information of a first carrier and a second carrier, wherein the second carrier is a SUL carrier and a TDD carrier; the transmitting module is further configured to transmit second information, the second information including indication information for indicating the time-domain offset between the first carrier and the second carrier, wherein the first information and the second information are system information; and the receiving module is configured to receive an uplink signal via the first carrier and / or the second carrier, wherein the time-domain position of the uplink signal on the second carrier is determined based on the time-domain offset value.

[0038] In one possible implementation, the transmitting module is further configured to: configure the first carrier and the second carrier as carrier aggregation; or, configure the first carrier as the master carrier and the second carrier as the modulated carrier of the first carrier.

[0039] In one possible implementation, the first information and the second information being system information includes: the first information and the second information being the same system information.

[0040] In one possible implementation, the first system message and / or the second system message are the main information block (MIB), the system information block (SIB), or a common message.

[0041] In one possible implementation, the device further includes a processing module for determining a time-domain offset value based on a time-domain offset and a first subcarrier spacing, the first subcarrier spacing being associated with the subcarrier spacing of a first carrier and / or the subcarrier spacing of a second carrier; and determining the time-domain position for receiving an uplink signal in a second carrier based on the time-domain position of the uplink signal transmitted in the first carrier and the time-domain offset value.

[0042] In one possible implementation, the first subcarrier spacing is associated with the subcarrier spacing of the first carrier and / or the subcarrier spacing of the second carrier, including the first subcarrier spacing being: the subcarrier spacing of the first carrier or the second carrier; or the larger of the minimum subcarrier spacing configured by the network device for the first carrier and the minimum subcarrier spacing configured by the network device for the second carrier; or the smaller of the smaller of the maximum subcarrier spacing configured by the network device for the first carrier and the maximum subcarrier spacing configured by the network device for the second carrier.

[0043] In one possible implementation, the granularity of the time-domain offset value is an orthogonal frequency division multiplexing (OFDM) symbol or time slot.

[0044] Fifthly, embodiments of this application provide a communication device that has the function of a terminal in implementing the first aspect or any possible implementation of the first aspect, or has the function of a control plane device in implementing the second aspect or any possible implementation of the second aspect.

[0045] The device can be a terminal or a chip included within a terminal. The functions of the aforementioned communication equipment can be implemented through hardware or through hardware executing corresponding software. The hardware or software includes one or more units corresponding to the aforementioned functions.

[0046] The device can be a network device or a chip contained within a network device. The functions of the aforementioned communication equipment can be implemented through hardware or through hardware executing corresponding software. The hardware or software includes one or more units corresponding to the aforementioned functions.

[0047] In one possible design, the device includes a processing unit and a transceiver unit, wherein the processing unit is configured to support the device in performing the methods of the first aspect or any possible implementation thereof, or in performing the methods of the second aspect or any possible implementation thereof.

[0048] In another possible design, the device includes a processor and may also include a memory. The processor is coupled to the memory and can be used to execute computer program instructions stored in the memory to cause the device to perform the methods of the first aspect or any possible implementation thereof, or to perform the methods of the second aspect or any possible implementation thereof. Optionally, the device also includes a communication interface, to which the processor is coupled. When the device is a network device, the communication interface may be a transceiver or an input / output interface; when the device is a chip included in a network device, the communication interface may be the chip's input / output interface. Optionally, the transceiver may be a transceiver circuit, and the input / output interface may be an input / output circuit.

[0049] In a sixth aspect, embodiments of this application provide a chip system, including: a processor coupled to a memory, the memory being used to store programs or instructions, which, when executed by the processor, cause the chip system to implement the method in the first aspect or any possible implementation of the first aspect, or to execute the method in the second aspect or any possible implementation of the second aspect.

[0050] Optionally, the chip system also includes an interface circuit for exchanging code instructions with the processor.

[0051] Optionally, the chip system may include one or more processors, which can be implemented in hardware or software. When implemented in hardware, the processor may be a logic circuit, integrated circuit, etc. When implemented in software, the processor may be a general-purpose processor that reads software code stored in memory.

[0052] Optionally, the chip system may contain one or more memories. The memory may be integrated with the processor or disposed separately from it; this application does not limit this. For example, the memory may be a non-transient processor, such as a read-only memory (ROM), which may be integrated with the processor on the same chip or disposed separately on different chips. This application does not specifically limit the type of memory or the arrangement of the memory and processor.

[0053] In a seventh aspect, embodiments of this application provide a computer-readable storage medium having a computer program or instructions stored thereon, which, when executed, cause a computer to perform the method in the first aspect or any possible implementation thereof, or to perform the method in the second aspect or any possible implementation thereof, or to perform the method in the third aspect or any possible implementation thereof, or to perform the method in the fourth aspect or any possible implementation thereof.

[0054] Eighthly, embodiments of this application provide a computer program product that, when a computer reads and executes the computer program product, causes the computer to perform the method in the first aspect or any possible implementation of the first aspect, or to perform the method in the second aspect or any possible implementation of the second aspect.

[0055] Ninthly, embodiments of this application provide a communication system that includes one or more communication devices described in the third and fourth aspects above. Attached Figure Description

[0056] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments will be briefly described below.

[0057] Figure 1A This is a schematic diagram of the architecture of the mobile communication system used in the embodiments of this application;

[0058] Figure 1B A schematic diagram of another architecture of the mobile communication system used in the embodiments of this application;

[0059] Figure 1C A schematic diagram illustrating an embodiment of this application that enhances uplink coverage via SUL;

[0060] Figure 1D A schematic diagram of cell access provided in an embodiment of this application;

[0061] Figure 1E This is another schematic diagram of cell access provided in an embodiment of this application;

[0062] Figure 1F This is a schematic diagram illustrating cross-carrier scheduling time-domain location determination provided in an embodiment of this application;

[0063] Figure 2A A flowchart of an uplink signal transmission method provided in an embodiment of this application;

[0064] Figure 2B A diagram showing the correspondence between subcarrier spacing and time domain length provided in an embodiment of this application;

[0065] Figure 3 A structural block diagram of a communication device provided in an embodiment of this application;

[0066] Figure 4 Another communication device structure block diagram provided in the embodiments of this application;

[0067] Figure 5 This is a schematic diagram of the hardware structure of a communication device provided in an embodiment of this application. Detailed Implementation

[0068] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0069] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0070] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0071] The devices involved in the embodiments of this application are described below with reference to the accompanying drawings.

[0072] Figure 1A This is a schematic diagram of the architecture of the mobile communication system used in the embodiments of this application. Figure 1A As shown, the mobile communication system includes core network equipment 110, network equipment 120, and at least one terminal (such as...). Figure 1A (Terminals 120 and 140 in the text). Alternatively, see [link to relevant documentation]. Figure 1B , Figure 1B Another schematic diagram of the mobile communication system used in the embodiments of this application, such as Figure 1B As shown, the mobile communication system includes a core network device 210, at least two network devices 220 and 230, and at least one terminal device 240. The terminal connects wirelessly to the network devices, and the network devices connect wirelessly or via a wired connection to the core network device. The core network device and the network devices can be independent physical devices, or the functions of the core network device and the logical functions of the network devices can be integrated into the same physical device, or a single physical device can integrate some of the functions of the core network device and some of the functions of the network device. The terminal can be fixed in location or mobile. Figure 1A and Figure 1B This is just an illustration; the communication system may also include other network devices, such as wireless repeaters and wireless backhaul devices. Figure 1A Not shown in the diagram. The embodiments of this application do not limit the number of core network devices, network devices, and terminals included in the mobile communication system.

[0073] The technical solutions of this application embodiment can be applied to various communication systems, such as wireless fidelity (WiFi) systems, vehicle-to-everything (V2X) communication systems, device-to-device (D2D) communication systems, vehicle-to-everything (V2X) communication systems, 4th generation (4G) mobile communication systems, such as long term evolution (LTE) systems, 5th generation (5G) mobile communication systems, such as new radio (NR) systems, and / or other new communication systems, such as 6th generation (6G) mobile communication systems, etc.

[0074] Network equipment is an access device that allows a terminal to access the mobile communication system wirelessly. It can be a base station NodeB, an evolved NodeN (eNodeB), a base station (gNB) in a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. The embodiments of this application do not limit the specific technology or specific equipment form used in the network equipment.

[0075] A terminal can also be called terminal equipment, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. Terminal equipment can include mobile phones, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminals in industrial control, wireless terminals in self-driving vehicles, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and so on.

[0076] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of the network devices and terminal devices.

[0077] The embodiments of this application can be applied to downlink signal transmission, uplink signal transmission, and device-to-device (D2D) signal transmission. For downlink signal transmission, the transmitting device is a network device, and the corresponding receiving device is a terminal. For uplink signal transmission, the transmitting device is a terminal, and the corresponding receiving device is a network device. For D2D signal transmission, both the transmitting and receiving devices are terminals. The transmission direction of the signals in the embodiments of this application is not limited.

[0078] To enhance uplink coverage, 5G NR introduces SUL (Short-range UL). Compared to typical LTE frequency bands, 5G NR operates at higher frequencies, resulting in greater penetration and distance losses for NUL (Non-SUL) carriers or non-SUL uplink signal transmission. This reduces the success rate of cell-edge users accessing the cell. Please refer to [link / reference]. Figure 1C , Figure 1C A schematic diagram illustrating an embodiment of this application of enhanced uplink coverage via SUL is provided, as shown below. Figure 1C As shown, TDD carriers, as non-SUL carriers, include uplink and downlink carriers, while low-frequency SUL can supplement uplink coverage to a certain extent. Currently, the SUL spectrum is a pure uplink frequency band, or it can be understood as the FDD UL spectrum.

[0079] 5G NR defines a new cell type for the combination of SUL and TDD carriers (non-SUL), including one downlink carrier and two uplink carriers. See details. Figure 1D , Figure 1D A schematic diagram of cell access provided in this application embodiment, such as Figure 1D As shown, the cell includes a pair of TDD uplink and downlink carriers, as well as SUL. The SUL is configured to the terminal by system information. When the terminal accesses the cell, the physical random access channel (PRACH) and msg3 can be transmitted on the SUL or non-SUL.

[0080] On the other hand, the terminal accesses the network device through the primary cell (Pcell / PScell), and the network device configures a secondary cell (Scell) for the terminal, enabling the terminal to utilize more spectrum resources and thus improve uplink and downlink capacity. The carrier corresponding to the primary cell is the modulated carrier, and the carrier corresponding to the secondary cell is the modulated carrier; alternatively, the carrier corresponding to the primary cell is the primary carrier, and the carrier corresponding to the secondary cell is the secondary carrier. When the network device and the terminal communicate simultaneously through the modulated carrier and the modulated carrier, at least two (or more) member carriers can be aggregated to obtain greater transmission bandwidth. Typically, the network device notifies the terminal device of the time slot offset of the aforementioned two carriers via RRC signaling. The terminal device determines the uplink transmission timing based on this time slot offset.

[0081] Since terminals can only receive RRC signaling in connected mode, network devices will only send RRC signaling to the terminal after confirming that the terminal has entered connected mode. However, in the evolution of communication technology, future technologies may support uplink resources of TDD carriers as SULs. Please refer to [link to relevant documentation] for details. Figure 1E , Figure 1E Another cell access diagram provided in this application embodiment, such as Figure 1EAs shown in (a), in the idle state of the terminal, the TDD uplink carrier, as the first carrier of the SUL, together with the NUL uplink carrier, performs uplink signal transmission for the terminal's access communication, and downlink signal transmission is performed through the NUL downlink carrier. However, when the terminal enters the connected state, as... Figure 1E As shown in (b), the TDD carrier is used for communication as NUL, and network devices and terminals can communicate through the uplink and downlink resources of the TDD carrier and the uplink and downlink resources of the NUL.

[0082] If the frame boundaries of TDD-SUL and NUL are misaligned, the network device cannot notify the terminal of the time slot offsets of multiple carrier scheduling when the terminal is in idle state. When the terminal determines the time slot of the data channel on the modulated carrier through the time slot number difference, the absolute time domain position of the time slot determined based on the master carrier is different from the absolute time domain position of the time slot determined based on the modulated carrier. Please refer to [link to details] for further information. Figure 1F , Figure 1F This application provides a schematic diagram of cross-carrier scheduling time-domain location determination, as shown in the embodiment. Figure 1F As shown, the master carrier and the modulated carrier each include 10 time slots numbered 0 to 9. When the time domain position of the master carrier (NUL) data channel is time slot number 2, the network device expects to call the modulated carrier (TDD carrier) at a time domain position with a time slot number difference of 3 from the master carrier. Therefore, the absolute time domain position of the time slot for calling the modulated carrier determined by the terminal based on the master carrier is: master carrier time slot number 5. Furthermore, since the terminal does not receive the time slot offset between the master carrier and the modulated carrier, it is assumed that there is no time slot offset between them. Therefore, the absolute time domain position of the time slot for calling the modulated carrier determined by the terminal based on the modulated carrier is: modulated carrier time slot number 5. In reality, the master carrier and the modulated carrier have... Figure 1F The offset of one timeslot shown in the diagram, where timeslot number 2 of the modulating carrier corresponds to timeslot number 1 of the modulated carrier, means that the absolute time domain position of the timeslot to call the modulated carrier should be timeslot number 4 of the modulated carrier. Without considering timeslot offset, this could lead to network devices failing to schedule across carriers or encountering errors.

[0083] Based on the above issues, please refer to Figure 2A , Figure 2A A flowchart of an uplink signal transmission method provided in this application embodiment is shown below. Figure 2A As shown, the method includes the following steps:

[0084] 201. The network device sends first information, which includes configuration information of the first carrier and the second carrier, wherein the second carrier is a SUL carrier and the second carrier is a TDD carrier;

[0085] 202. The network device sends second information, which includes indication information for indicating the time domain offset between the first carrier and the second carrier. The first information and the second information are system information.

[0086] 203. The terminal acquires the first and second information;

[0087] 204. The terminal determines the time domain position for transmitting the uplink signal on the second carrier based on the time domain offset;

[0088] 205. The terminal transmits uplink signals via the first carrier and / or the second carrier.

[0089] Before a connection is established between the terminal and the network device, the terminal is in an idle state. The network device can send system messages to the terminal, including master information blocks (MIBs), system information blocks (SIBs), or common messages. Specific examples include: serving cell configuration (servingCellConfigCommon), serving cell configuration system information block (ServingCellConfigCommonSIB), uplink configuration (uplinkConfigCommon), or supplementary uplink configuration (supplementaryUplinkConfig). The network device can configure a first carrier for the terminal via system messages, enabling the terminal to communicate with the network device through the first carrier. For example, the network device can send downlink control information (DCI) on the downlink resources of the first carrier, and the terminal can send the uplink information scheduled corresponding to that DCI on the uplink resources of the first carrier. Alternatively, the terminal can actively send access information to the network device through the uplink resources of the first carrier. The first carrier can be referred to as non-SUL or NUL, etc.

[0090] In this embodiment, the network device configures a second carrier for the terminal, specifically a TDD carrier, and uses the uplink resources of the TDD carrier as the SUL of the first carrier, so that when the terminal accesses the network device, the SUL provides the terminal with more access spectrum resources. Both the first and second carriers are associated with the downlink resources corresponding to the first carrier. Therefore, the TDD carrier also needs to be configured when the terminal is idle. Similarly, the TDD carrier is configured by system messages. The network device then sends first information to the terminal, which can be one of the system messages described above. The first information includes configuration information for the first and second carriers, such as uplink frequency information (frequencyInfoUL) (absolute uplink carrier frequency configuration subcarrier specific virtual carrier), initial uplink bandwidth part (BWP), and common time alignment timer (timeAlignmentTimerCommon). Furthermore, the downlink resources corresponding to the first carrier have the same frequency and / or the same bandwidth as the first carrier.

[0091] Furthermore, the frame boundaries of the first and second carriers may not be aligned. When the network device notifies that the uplink resources of the second carrier are used as the SUL of the first carrier, the terminal device receives control information on the downlink resources corresponding to the first carrier. This control information is used to schedule uplink transmission on the second carrier. If the time domain position of the uplink transmission on the second carrier is determined entirely according to the time domain position information of the first carrier signal transmission, it may cause the network device to fail in cross-carrier scheduling or cause errors. Therefore, when the terminal is idle, the network device sends second information to the terminal. The second information includes a time domain offset indication between the first and second carriers. For example, the time domain offset indication is the time slot offset or orthogonal frequency division multiplexing (OFDM) symbol offset between the first and second carriers. In this way, the terminal can determine the time domain position for transmitting uplink signals based on the time domain offset between the first and second carriers, including the time domain position for transmitting uplink signals on the first carrier or the time domain position for transmitting uplink signals on the second carrier. The second information is also one of the system information described above. Furthermore, the second information and the first information can be the same system information, that is, the network device sends the first information and the second information through the same system information.

[0092] Optionally, the terminal receives downlink control information on the downlink carrier corresponding to the first carrier. The downlink control information is used to instruct the terminal device to send the first uplink transmission on the second carrier. The terminal determines the time domain position of the first uplink transmission on the second carrier based on the downlink control information and the time domain offset.

[0093] The terminal may determine whether to send an uplink signal based on the scheduling of the downlink control information (DCI), which is transmitted by the downlink carrier of the first carrier. Then, after determining that an uplink signal needs to be transmitted on the second carrier based on the DCI, the terminal determines the time domain position of the first uplink transmission according to the time domain offset indicated by the network device, and transmits the first uplink transmission through the second carrier, thereby realizing the auxiliary uplink transmission of the second carrier.

[0094] Furthermore, the granularity of the time-domain offset indication sent by the network device is in the form of time slots, OFDM symbols, or subframes. That is, the time-domain offset indication indicates the offset of several time slots or several OFDM symbols, etc., but the specific time-domain offset length value still needs to be further calculated. Optionally, the terminal can determine the time-domain offset value based on the time-domain offset indicated by the network device and the first subcarrier interval, and then determine the time-domain position of the uplink signal in the second carrier based on the time-domain offset value and the time-domain position of the uplink signal transmitted in the first carrier.

[0095] Optionally, the first subcarrier spacing is: the subcarrier spacing of the first carrier or the second carrier; or the larger of the subcarrier spacing of the first carrier and the second carrier; or the larger of the minimum subcarrier spacing configured by the network device for the first carrier and the minimum subcarrier spacing configured for the second carrier; or the smaller of the maximum subcarrier spacing configured by the network device for the first carrier and the maximum subcarrier spacing configured for the second carrier. Specifically, the frame structure is based on 10ms. A 10ms time length represents the length of a frame. A frame can include 10 subframes, i.e., the subframe length is 1ms. The time domain offset between the first carrier and the second carrier can be 0.1 frames, 0.2 frames, or 1 subframe, etc. A frame can be further divided into multiple time slots. Normally, each time slot consists of 14 OFDM symbols, and the length of each OFDM symbol is determined according to the subcarrier spacing. Subcarrier spacing (SCS) represents the frequency domain spacing between subcarriers of a symbol. It can be 15 kHz (megahertz), 30 kHz, or 60 kHz, etc. In a multicarrier system, the symbol period (symbol length) T is related to SCS by T = 1 / SCS, meaning that a larger subcarrier spacing results in a shorter symbol period. Correspondingly, the length of each time slot can also be determined based on the subcarrier spacing.

[0096] As described above, different subcarrier intervals correspond to different time-domain lengths, including symbol length and time slot length. See details... Figure 2B , Figure 2B A diagram showing the correspondence between subcarrier spacing and time domain length provided in this application embodiment is shown below. Figure 2BAs shown, when the subcarrier spacing is 15kHz, the length of one time slot is 1ms; when the subcarrier spacing is 30kHz, the length of one time slot is 0.5ms, or 500µs (microseconds); and when the subcarrier spacing is 60kHz, the length of one time slot is 0.125ms, or 125µs. One time slot may contain 14 symbols. The larger the subcarrier spacing, the shorter the corresponding symbol length. For example, with a subcarrier spacing of 15kHz, the length of each symbol is approximately 66.7µs; with a subcarrier spacing of 30kHz, the length of each symbol is approximately 33.3µs; and with a subcarrier spacing of 60kHz, the length of each symbol is approximately 16.7µs. The time domain offset between the first and second carriers can be determined based on the time domain offset indicator and the first subcarrier spacing. The first subcarrier spacing can be the subcarrier spacing of either the first or second carrier. For example, if the subcarrier spacing of the first carrier is 15kHz and the subcarrier spacing of the second carrier is 60kHz, and we assume that the larger subcarrier spacing between the first and second carriers is chosen as the first subcarrier spacing, then the first subcarrier spacing is 60kHz. Assuming the time-domain offset indicated by the network device is 3 time slots, the time-domain offset value determined based on the first subcarrier spacing is 3 * 0.125ms = 0.375ms. Alternatively, we can choose the smaller subcarrier spacing between the first and second carriers as the first subcarrier spacing, then the first subcarrier spacing is 15kHz. If the time-domain offset indicated by the network device is 3 time slots, then the time-domain offset value determined based on the first subcarrier spacing is 3 * 0.5ms = 1.5ms. Assuming the time-domain offset indicated by the network device is 10 symbols, then the time-domain offset value determined based on the first subcarrier spacing is 10 * 16.7us = 167us. Alternatively, the first subcarrier spacing can be the larger of the minimum subcarrier spacing configured by the network device for the first carrier and the minimum subcarrier spacing configured by the network device for the second carrier. For example, if the minimum subcarrier spacing configured by the network device for the first carrier is 15kHz, it means that the subcarrier spacing of the first carrier can be greater than or equal to 15kHz. If the minimum subcarrier spacing configured by the network device for the second carrier is 30kHz, it means that the subcarrier spacing of the second carrier can be greater than or equal to 30kHz. Choosing the larger of the two minimum subcarrier spacings as the first subcarrier spacing makes the first subcarrier spacing closer to the actual subcarrier spacing of the first and second carriers. Similarly, the smaller of the maximum subcarrier spacing configured by the network device for the first carrier and the maximum subcarrier spacing configured for the second carrier can also be chosen as the first subcarrier spacing.

[0097] After determining the time-domain offset values ​​of the first and second carriers, the time-domain position where the network device calls upon the second carrier to transmit the uplink signal can be calculated based on the time-domain position of the first carrier transmitting the uplink signal and the time-domain offset values ​​of the first and second carriers. Assuming the indicated time-domain offset is the number of time slot offsets, the corresponding formula for determining the time-domain position of the second carrier transmitting the uplink signal can be:

[0098]

[0099] Where K S This indicates the time slot or subframe (time domain position) corresponding to when the network device receives the uplink signal on the second carrier. K2 represents the offset between the time slot of the physical downlink control channel (PDCCH) and the time slot of the physical uplink shared channel (PUSCH) on the first carrier. This value is indicated by the time domain resource allocation information field in the DCI sent by the network device and is determined based on the subcarrier spacing of the PUSCH; n is the time slot number of the scheduling DCI, and μ... PUSCH and μ PDCCH These represent the subcarrier spacing of PUSCH and the subcarrier spacing of DCI scheduling, respectively. slot,offset,PDCCH and μ offset,PDCCH These represent the time slot offsets of the first and second carriers on the PDCCH determined according to the above process, and the first subcarrier spacing related to the time slot offset on the PDCCH, respectively; N slot,offset,PUSCH and μ offset,PUSCH These represent the time slot offsets of the first and second carriers on the PUSCH determined according to the above process, and the first subcarrier spacing related to the time slot offset on the PUSCH, respectively.

[0100] Formula (1) above is the method for calculating the time-domain position of the uplink signal transmitted by the second carrier when the uplink channel of the first and second carriers is PUSCH. When the uplink resources of the first and second carriers are sounding reference signals (SRS), the corresponding formula is:

[0101]

[0102] Where μ PSRS N represents the subcarrier spacing of the SRS. slot,offset,SRS and μ offset,SRS These represent the time slot offsets of the first and second carriers in the SRS determined according to the above process, and the first subcarrier spacing related to the time slot offset in the SRS, respectively. The other symbols in formula (2) have the same meanings as in formula (1).

[0103] Similarly, network devices can also calculate the time-domain position of receiving uplink signals in the second carrier according to the above formula, thereby efficiently receiving uplink signals.

[0104] As can be seen, in this embodiment, when the TDD carrier is used as an auxiliary uplink carrier, the time-domain offset between the TDD carrier and the NUL carrier is notified through system information. This enables the terminal to accurately determine the time-domain position of the TDD carrier transmitting the uplink signal in the idle state, and then send the auxiliary uplink signal at that time-domain position, thus completing the cross-carrier scheduling of the network device. This improves the communication efficiency when the TDD carrier is used as an auxiliary uplink carrier.

[0105] After a terminal connects to a network device, the network device and the terminal can communicate based on the uplink and downlink resources of the first carrier and the second carrier. That is, the communication connection between the network device and the terminal includes the downlink resources of the second carrier. Optionally, the second carrier and the first carrier may be configured as aggregated carriers by the network device, or the first carrier may be configured as the primary carrier and the second carrier as the secondary carrier, or the first carrier may be configured as the primary carrier and the second carrier as the secondary carrier. Furthermore, the network device and the terminal continue communication after connection based on the time-domain offset between the first and second carriers notified by the system information. This means the network device does not need to notify the time-domain offset between the first and second carriers again via RRC signaling. Firstly, the network device has already notified the time-domain offset via system messages during idle state, so there is no need for repeated notification. Secondly, notifying the time-domain offset between the first and second carriers again via RRC signaling may cause communication interruption on the second carrier, degrading communication quality. Continuing to use the time-domain offset between the first and second carriers notified by the system information for communication after the terminal is connected effectively improves communication quality.

[0106] Figure 3 A communication device 300 provided in this application embodiment can be used to perform the above-described... Figures 2A-2B The method and specific embodiments for uplink signal transmission applied to terminals. In one possible implementation, such as... Figure 3 As shown, the device 300 includes a transmitting module 301 and a receiving module 302.

[0107] The receiving module 302 is used to acquire first information, which includes configuration information of a first carrier and a second carrier, wherein the second carrier is a SUL carrier and a TDD carrier;

[0108] The receiving module 302 is also used to acquire second information, the second information including indication information for indicating the time domain offset between the first carrier and the second carrier, the first information and the second information being system information;

[0109] The transmitting module 301 is used to transmit uplink signals via a first carrier and / or a second carrier, wherein the time domain position of the uplink signal transmitted via the second carrier is determined according to the time domain offset.

[0110] Optionally, the receiving module 302 is further configured to: receive the downlink signal transmitted by the second carrier, wherein,

[0111] The first and second carriers are configured for carrier aggregation; or...

[0112] The first carrier is configured as the master carrier, and the second carrier is configured as the modulated carrier of the first carrier; or,

[0113] The first carrier is configured as the primary carrier, and the second carrier is configured as the secondary carrier of the first carrier.

[0114] Optionally, the device 300 further includes a processing module 303, specifically used for:

[0115] The time-domain offset value is determined based on the time-domain offset and the first subcarrier spacing, wherein the first subcarrier spacing is associated with the subcarrier spacing of the first carrier and / or the subcarrier spacing of the second carrier;

[0116] The time domain position of the uplink signal transmitted via the second carrier is determined based on the time domain position and time domain offset value of the uplink signal transmitted in the first carrier.

[0117] Optionally, the processing module 303 described above may be a chip, encoder, encoding circuit, or other integrated circuit that can implement the method of this application.

[0118] Optionally, the receiving module 302 and the transmitting module 301 can be interface circuits or transceivers.

[0119] Optionally, the communication device 300 may further include a storage module (not shown in the figure), which can be used to store data and / or signaling. The storage module may be coupled to the processing module 303, or to the receiving module 302 or the transmitting module 301. For example, the processing module 303 may be used to read the data and / or signaling from the storage module, so that the uplink signal transmission method in the foregoing method embodiments is executed.

[0120] Figure 4 This application provides another communication device 400, which can be used to perform the above-described... Figures 2A-2B The method and specific embodiments for uplink signal transmission applied to network devices. In one possible implementation, such as... Figure 4 As shown, the device 400 includes a receiving module 401 and a transmitting module 402.

[0121] The transmitting module 402 is used to transmit first information, which includes configuration information of a first carrier and a second carrier, wherein the second carrier is a SUL carrier and a TDD carrier;

[0122] The transmitting module 402 is also used to transmit second information, the second information including indication information for indicating the time domain offset between the first carrier and the second carrier, the first information and the second information being system information;

[0123] The receiving module 401 is used to receive uplink signals via a first carrier and / or a second carrier, wherein the time domain position of the uplink signal in the second carrier is determined according to the time domain offset.

[0124] Optionally, the communication device 400 further includes a processing module 403, for:

[0125] Configure the first and second carriers for carrier aggregation; or,

[0126] Configure the first carrier as the primary modulation carrier and the second carrier as the modulated carrier of the first carrier; or,

[0127] Configure the first carrier as the primary carrier and the second carrier as the secondary carrier.

[0128] Optionally, the processing module 403 is also used for:

[0129] The time-domain offset value is determined based on the time-domain offset and the first subcarrier spacing, wherein the first subcarrier spacing is associated with the subcarrier spacing of the first carrier and / or the subcarrier spacing of the second carrier;

[0130] The time domain position of the uplink signal in the second carrier is determined based on the time domain position and time domain offset value of the uplink signal transmitted in the first carrier.

[0131] Optionally, the communication device 400 is also used to implement Figures 2A-2B Other implementation processes of the uplink signal transmission method applied to network devices can be specifically described in the relevant parts of the corresponding embodiments, and will not be repeated here.

[0132] Optionally, the communication device 400 may further include a processing module 403, which may be a chip, encoder, encoding circuit or other integrated circuit that can implement the method of this application.

[0133] Optionally, the receiving module 401 and the transmitting module 402 can be interface circuits or transceivers.

[0134] Optionally, the device 400 may further include a storage module (not shown in the figure), which can be used to store data and / or signaling. The storage module may be coupled to the processing module 403, or to the receiving module 401 or the transmitting module 402. For example, the processing module 403 may be used to read the data and / or signaling from the storage module, so that the uplink signal transmission method in the foregoing method embodiments is executed.

[0135] like Figure 5 As shown, Figure 5 A schematic diagram of the hardware structure of a communication device according to an embodiment of this application is shown. The structure of communication device 300 or communication device 400 can be referred to... Figure 5 The structure shown is described. The communication device 500 includes: a processor 111 and a transceiver 112, wherein the processor 111 and the transceiver 112 are electrically coupled.

[0136] The processor 111 is configured to execute some or all of the computer program instructions in the memory, and when the some or all of the computer program instructions are executed, the device performs the method described in any of the above embodiments.

[0137] The transceiver 112 is used to communicate with other devices; for example, a network device sends first information and second information to a terminal, and the terminal receives the first information and second information sent by the network device.

[0138] Optionally, the device may also include a memory 113 for storing computer program instructions. Optionally, the memory 113 (memory #1) may be located within the device, the memory 113 (memory #2) may be integrated with the processor 111, or the memory 113 (memory #3) may be located outside the device.

[0139] It should be understood that Figure 5 The communication device 500 shown can be a chip or circuit. For example, it can be a chip or circuit located within a terminal device or communication device. The transceiver 112 described above can also be a communication interface. The transceiver includes a receiver and a transmitter. Furthermore, the communication device 500 can also include a bus system.

[0140] The processor 111, memory 113, and transceiver 112 are connected via a bus system. The processor 111 executes the instructions stored in the memory 113 to control the transceiver to receive and transmit signals, thus completing the steps of the first or second device in the implementation method of this application. The memory 113 may be integrated into the processor 111 or may be disposed separately from the processor 111.

[0141] As one implementation, the transceiver 112's functionality can be implemented using transceiver circuitry or a dedicated transceiver chip. The processor 111 can be implemented using a dedicated processing chip, processing circuitry, processor, or general-purpose chip. The processor can be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP. The processor may further include hardware chips or other general-purpose processors. The aforementioned hardware chip can be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The aforementioned PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), and other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any combination thereof. The general-purpose processor can be a microprocessor or any conventional processor.

[0142] It should also be understood that the memory mentioned in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate Synchronous DRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memories described in this application are intended to include, but are not limited to, these and any other suitable types of memory.

[0143] This application provides a computer storage medium storing a computer program, the computer program including methods for performing the above-described methods applied to a terminal.

[0144] This application provides a computer storage medium storing a computer program that includes methods for performing the above-described methods applied to a network device.

[0145] This application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the method applied to a terminal as described in the above embodiments.

[0146] This application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the method described above for application to a network device.

[0147] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0148] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0149] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0150] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0151] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0152] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0153] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0154] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An uplink signal transmission method, characterized in that, The method includes: Obtain first information, which includes configuration information of a first carrier and a second carrier, wherein the second carrier is a SUL carrier and the second carrier is a TDD carrier; Obtain second information, which includes indication information for indicating the time-domain offset between the first carrier and the second carrier, wherein the first information and the second information are system information; Uplink signals are transmitted via the first carrier and / or the second carrier, wherein the time-domain position of the uplink signal transmitted by the second carrier is determined based on the time-domain offset, including: Downlink control information is received on the downlink carrier corresponding to the first carrier, and the downlink control information is used to indicate the transmission of an uplink signal on the second carrier; the time domain position of the uplink signal on the second carrier is determined according to the downlink control information and the time domain offset.

2. The method according to claim 1, characterized in that, After accessing the network device via the first carrier and / or the second carrier, the method further includes: receiving a downlink signal transmitted by the second carrier, wherein the first carrier and the second carrier are configured for carrier aggregation; or, The first carrier is configured as the master carrier, and the second carrier is configured as the modulated carrier of the first carrier; or, The first carrier is configured as the primary carrier, and the second carrier is configured as the secondary carrier of the first carrier.

3. The method according to claim 1 or 2, characterized in that, The first information and the second information being system information include: the first information and the second information being the same system information.

4. The method according to claim 1 or 2, characterized in that, The first information and / or the second information are main information block (MIB), system information block (SIB), or public messages.

5. The method according to claim 1, characterized in that, The method further includes determining the time domain position of the second carrier transmitting the uplink signal based on the time domain offset, specifically including: The time-domain offset value is determined based on the time-domain offset and the first subcarrier interval, wherein the first subcarrier interval is associated with the subcarrier interval of the first carrier and / or the subcarrier interval of the second carrier; The time domain position of transmitting the uplink signal via the second carrier is determined based on the time domain position of the uplink signal transmitted in the first carrier and the time domain offset value.

6. The method according to claim 5, characterized in that, The first subcarrier spacing, associated with the subcarrier spacing of the first carrier and / or the subcarrier spacing of the second carrier, includes the following: the first subcarrier spacing is: The subcarrier spacing of the first carrier or the second carrier; or The larger of the minimum subcarrier spacing configured by the network device for the first carrier and the minimum subcarrier spacing configured for the second carrier; or The smaller of the maximum subcarrier spacing configured by the network device for the first carrier and the maximum subcarrier spacing configured for the second carrier.

7. The method according to claim 1 or 2, characterized in that, The granularity of the time-domain offset is an orthogonal frequency division multiplexing (OFDM) symbol or time slot.

8. An uplink signal transmission method, characterized in that, The method includes: Send first information, the first information including configuration information of a first carrier and a second carrier, wherein the second carrier is a SUL carrier and the second carrier is a TDD carrier; Send a second message, the second message including indication information for indicating the time domain offset between the first carrier and the second carrier, the first message and the second message being system information; Uplink signals are received via the first carrier and / or the second carrier. The time domain position of the uplink signal in the second carrier is determined according to the time domain offset. Specifically, the uplink signal in the second carrier is determined according to downlink control information and the time domain offset. The downlink control information is transmitted on the downlink carrier corresponding to the first carrier and is used to indicate the transmission of uplink signals on the second carrier.

9. The method according to claim 8, characterized in that, After determining that the terminal accesses the network device via the first carrier and / or the second carrier, the method further includes: Configure the first carrier and the second carrier as carrier aggregation; or, The first carrier is configured as the primary carrier, and the second carrier is the modulated carrier of the first carrier; or, the network device is configured as the first carrier as the primary carrier and the second carrier as the secondary carrier.

10. The method according to claim 8 or 9, characterized in that, The first information and the second information being system information include: the first information and the second information being the same system information.

11. The method according to claim 8 or 9, characterized in that, The first information and / or the second information are main information block (MIB), system information block (SIB), or public messages.

12. The method according to claim 8, characterized in that, The method further includes determining the time-domain position of the uplink signal in the second carrier based on the time-domain offset, specifically including: The time-domain offset value is determined based on the time-domain offset and the first subcarrier interval, wherein the first subcarrier interval is associated with the subcarrier interval of the first carrier and / or the subcarrier interval of the second carrier; The time domain position for receiving the uplink signal in the second carrier is determined based on the time domain position of the uplink signal transmitted in the first carrier and the time domain offset value.

13. The method according to claim 12, characterized in that, The first subcarrier spacing is associated with the subcarrier spacing of the first carrier and / or the subcarrier spacing of the second carrier, including the first subcarrier spacing as follows: The subcarrier spacing of the first carrier or the second carrier; or The larger of the minimum subcarrier spacing configured by the network device for the first carrier and the minimum subcarrier spacing configured for the second carrier; or The smaller of the maximum subcarrier spacing configured by the network device for the first carrier and the maximum subcarrier spacing configured for the second carrier.

14. The method according to claim 8 or 9, characterized in that, The granularity of the time-domain offset is an orthogonal frequency division multiplexing (OFDM) symbol or time slot.

15. A communication device, characterized in that, Includes a module for performing the method as described in any one of claims 1-7.

16. A communication device, characterized in that, Includes a module for performing the method as described in any one of claims 8-14.

17. A communication device, characterized in that, The device includes at least one processor, the at least one processor being coupled to at least one memory: The at least one processor is configured to execute a computer program or instructions stored in the at least one memory to cause the apparatus to perform the method as described in any one of claims 1-7, or to cause the apparatus to perform the method as described in any one of claims 8-14.

18. A readable storage medium, characterized in that, Used to store instructions that, when executed, cause the method as described in any one of claims 1-7 to be implemented, or cause the method as described in any one of claims 8-14 to be implemented.

19. A computer program product that, when read and executed by a computer, causes the computer to perform the method as described in any one of claims 1-7 or 8-14.

20. A communication system comprising the communication apparatus of claim 15 and the communication apparatus of claim 16.

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