Data transmission method, device and storage medium

Abstract

The application provides a data transmission method and device and a storage medium, and relates to the technical field of communication. The method comprises the following steps: sending indication information to a terminal, wherein the indication information is used for indicating a combined frequency band, the combined frequency band comprises a first time division duplex (TDD) frequency band, a first supplementary downlink (SDL) frequency band and a first supplementary uplink (SUL) frequency band; and sending downlink data to the terminal and / or receiving uplink data sent by the terminal based on the combined frequency band. The scheme provided in the application can improve the utilization rate of frequency domain resources.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a data transmission method, device and storage medium. Background Technology

[0002] With the continuous development of communication technology and the emergence of new services such as self-media, 4K high-definition live streaming, augmented reality (AR), virtual reality (VR), and cloud services, higher requirements have been placed on data transmission rates.

[0003] Among the related technologies, it is proposed to use the Supplementary Upnlink (SUL) band to enhance uplink spectrum resources, thereby improving the uplink data transmission rate.

[0004] However, the aforementioned methods for increasing data transmission rates result in low utilization of frequency domain resources. Summary of the Invention

[0005] This application provides a data transmission method, device, and storage medium to improve the utilization rate of frequency domain resources.

[0006] In a first aspect, this application provides a data transmission method applied to a network device, the method comprising:

[0007] Send indication information to the terminal. The indication information is used to indicate the combined frequency band. The combined frequency band includes a first time division duplex (TDD) frequency band, a first supplementary downlink (SDL) frequency band, and a first supplementary uplink (SUL) frequency band.

[0008] Based on the combined frequency band, it sends downlink data to the terminal and / or receives uplink data sent by the terminal.

[0009] In one possible implementation, the indication information includes at least one of the following:

[0010] The band number of the first TDD band;

[0011] The frequency band number of the first SDL band;

[0012] The band number of the first SUL band;

[0013] Channel bandwidth of the first TDD band;

[0014] The channel bandwidth of the first SDL band;

[0015] The channel bandwidth of the first SUL band.

[0016] In one possible implementation, sending instruction information to the terminal includes:

[0017] A first combined frequency band number is determined from at least one candidate combined frequency band number, the first combined frequency band number including the frequency band number of the first TDD frequency band, the frequency band number of the first SDL frequency band and the frequency band number of the first SUL frequency band;

[0018] In the bandwidth combination set corresponding to the first combination frequency band number, the first channel bandwidth is determined. The first channel bandwidth includes the channel bandwidth of the first TDD frequency band, the channel bandwidth of the first SDL frequency band, and the channel bandwidth of the first SUL frequency band.

[0019] Based on the first combination frequency band number and the first channel bandwidth, an instruction message is sent to the terminal.

[0020] In one possible implementation, the method also includes:

[0021] The terminal receives capability information, which includes the combined frequency band numbers supported by the terminal.

[0022] Among them, at least one candidate combination frequency band number is a combination frequency band number supported by the terminal.

[0023] In one possible implementation, the channel bandwidth of the first SUL band is greater than or equal to the channel bandwidth of the first SDL band.

[0024] The channel bandwidth of the first TDD band is greater than or equal to the sum of the channel bandwidth of the first SUL band and the channel bandwidth of the first SDL band.

[0025] In one possible implementation, based on the combined frequency band, downlink data is transmitted to the terminal and / or uplink data is received from the terminal, including at least one of the following:

[0026] In the uplink time slot of the TDD link, the uplink data sent by the terminal is received based on the first TDD frequency band;

[0027] During the uplink time slot, downlink data is sent to the terminal based on the first SDL band;

[0028] In the downlink and hybrid time slots of the TDD link, uplink data transmitted by the terminal is received based on the first SUL band;

[0029] Downlink data is transmitted to the terminal based on the first TDD frequency band in the downlink time slot and the mixed time slot.

[0030] Secondly, embodiments of this application provide a data transmission method applied to a terminal, the method comprising:

[0031] Receive indication information sent by network devices. The indication information is used to indicate a combined frequency band, which includes a first TDD frequency band, a first SDL frequency band, and a first SUL frequency band.

[0032] Based on the combined frequency band, it receives downlink data sent by network devices and / or sends uplink data to network devices.

[0033] In one possible implementation, the indication information includes at least one of the following:

[0034] The band number of the first TDD band;

[0035] The frequency band number of the first SDL band;

[0036] The band number of the first SUL band;

[0037] Channel bandwidth of the first TDD band;

[0038] The channel bandwidth of the first SDL band;

[0039] The channel bandwidth of the first SUL band.

[0040] In one possible implementation, the method also includes:

[0041] Send capability information to network devices, including the combined frequency band numbers supported by the terminal.

[0042] In one possible implementation, the channel bandwidth of the first SUL band is greater than or equal to the channel bandwidth of the first SDL band.

[0043] The channel bandwidth of the first TDD band is greater than or equal to the sum of the channel bandwidth of the first SUL band and the channel bandwidth of the first SDL band.

[0044] In one possible implementation, based on a combined frequency band, receiving downlink data transmitted by a network device and / or transmitting uplink data to a network device includes at least one of the following:

[0045] In the uplink time slot of the TDD link, uplink data is sent to the network device based on the first TDD frequency band;

[0046] In the uplink time slot, downlink data transmitted by network devices is received based on the first SDL band;

[0047] In the downlink and hybrid time slots of the TDD link, uplink data is sent to network devices based on the first SUL band;

[0048] In the downlink time slot and the mixed time slot, downlink data transmitted by network devices is received based on the first TDD frequency band.

[0049] Thirdly, embodiments of this application provide a data transmission apparatus, including:

[0050] The first transceiver module is used to send indication information to the terminal. The indication information is used to indicate the combined frequency band, which includes the first TDD frequency band, the first SDL frequency band, and the first SUL frequency band.

[0051] The second transceiver module is used to send downlink data to the terminal and / or receive uplink data sent by the terminal based on the combined frequency band.

[0052] In one possible implementation, the indication information includes at least one of the following:

[0053] The band number of the first TDD band;

[0054] The frequency band number of the first SDL band;

[0055] The band number of the first SUL band;

[0056] Channel bandwidth of the first TDD band;

[0057] The channel bandwidth of the first SDL band;

[0058] The channel bandwidth of the first SUL band.

[0059] In one possible implementation, the first transceiver module is specifically used for:

[0060] A first combined frequency band number is determined from at least one candidate combined frequency band number, the first combined frequency band number including the frequency band number of the first TDD frequency band, the frequency band number of the first SDL frequency band and the frequency band number of the first SUL frequency band;

[0061] In the bandwidth combination set corresponding to the first combination frequency band number, the first channel bandwidth is determined. The first channel bandwidth includes the channel bandwidth of the first TDD frequency band, the channel bandwidth of the first SDL frequency band, and the channel bandwidth of the first SUL frequency band.

[0062] Based on the first combination frequency band number and the first channel bandwidth, an instruction message is sent to the terminal.

[0063] In one possible implementation, the first transceiver module is also used for:

[0064] The terminal receives capability information, which includes the combined frequency band numbers supported by the terminal.

[0065] Among them, at least one candidate combination frequency band number is a combination frequency band number supported by the terminal.

[0066] In one possible implementation, the channel bandwidth of the first SUL band is greater than or equal to the channel bandwidth of the first SDL band.

[0067] The channel bandwidth of the first TDD band is greater than or equal to the sum of the channel bandwidth of the first SUL band and the channel bandwidth of the first SDL band.

[0068] In one possible implementation, the second transceiver module is specifically used for at least one of the following:

[0069] In the uplink time slot of the TDD link, the uplink data sent by the terminal is received based on the first TDD frequency band;

[0070] During the uplink time slot, downlink data is sent to the terminal based on the first SDL band;

[0071] In the downlink and hybrid time slots of the TDD link, uplink data transmitted by the terminal is received based on the first SUL band;

[0072] Downlink data is transmitted to the terminal based on the first TDD frequency band in the downlink time slot and the mixed time slot.

[0073] Fourthly, embodiments of this application provide a data transmission apparatus, including:

[0074] The third transceiver module is used to receive indication information sent by the network device. The indication information is used to indicate the combined frequency band, which includes the first TDD frequency band, the first SDL frequency band, and the first SUL frequency band.

[0075] The fourth transceiver module is used to receive downlink data sent by network devices and / or send uplink data to network devices based on the combined frequency band.

[0076] In one possible implementation, the indication information includes at least one of the following:

[0077] The band number of the first TDD band;

[0078] The frequency band number of the first SDL band;

[0079] The band number of the first SUL band;

[0080] Channel bandwidth of the first TDD band;

[0081] The channel bandwidth of the first SDL band;

[0082] The channel bandwidth of the first SUL band.

[0083] In one possible implementation, the third transceiver module is specifically used for:

[0084] Send capability information to network devices, including the combined frequency band numbers supported by the terminal;

[0085] Among them, at least one candidate combination frequency band number is a combination frequency band number supported by the terminal.

[0086] In one possible implementation, the fourth transceiver module is specifically used for at least one of the following:

[0087] In the uplink time slot of the TDD link, uplink data is sent to the network device based on the first TDD frequency band;

[0088] In the uplink time slot, downlink data transmitted by network devices is received based on the first SDL band;

[0089] In the downlink and hybrid time slots of the TDD link, uplink data is sent to network devices based on the first SUL band;

[0090] In the downlink time slot and the mixed time slot, downlink data transmitted by network devices is received based on the first TDD frequency band.

[0091] Fifthly, embodiments of this application provide a data transmission device, including a memory and a processor;

[0092] The memory stores the instructions that the computer executes;

[0093] The processor executes computer execution instructions from the memory, causing the processor to perform a data transfer method as described in any of the first aspects, or the processor to perform a data transfer method as described in any of the second aspects.

[0094] In a sixth aspect, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a controller, are used to implement the data transmission method of any of the first aspects, or, when executed by a controller, are used to implement the data transmission method of any of the second aspects.

[0095] The data transmission method, device, and storage medium provided in this application embodiment involve a network device sending indication information to a terminal. This indication information specifies a combined frequency band, which includes a first TDD band, a first SDL band, and a first SUL band. Based on this combined frequency band, the network device sends downlink data to the terminal and / or receives uplink data from the terminal. By combining the first TDD band, the first SDL band, and the first SUL band, uplink and downlink data transmission can be performed on all types of time slots of the TDD link. This effectively utilizes the resources of the SDL band, improves the utilization rate of frequency domain resources, and also increases the uplink and downlink data transmission rates. Attached Figure Description

[0096] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0097] Figure 1 This is a schematic diagram of an application scenario provided by an embodiment of this application;

[0098] Figure 2 A flowchart illustrating the data transmission method provided in this application embodiment;

[0099] Figure 3 Signaling diagram of the data transmission method provided in the embodiments of this application;

[0100] Figure 4 This is a schematic diagram of a data transmission method provided in an embodiment of this application;

[0101] Figure 5 Schematic diagram of the data transmission device provided in the embodiments of this application Figure 1 ;

[0102] Figure 6 Schematic diagram of the data transmission device provided in the embodiments of this application Figure 2 ;

[0103] Figure 7 A schematic diagram of the structure of the data transmission device provided in the embodiments of this application.

[0104] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0105] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0106] In this application, the term "comprising" and its variations may refer to a non-limiting inclusion; the term "or" and its variations may refer to "and / or".

[0107] In this application, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0108] In this application, the term "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0109] In this application, the term "at least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0110] In this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0111] First, combine Figure 1 An applicable application scenario of the embodiments of this application will be introduced.

[0112] Figure 1 This is a schematic diagram illustrating an application scenario provided by an embodiment of this application. Please refer to [link / reference]. Figure 1 The system includes a network device 11 and a terminal 12. The network device 11 and the terminal 12 can communicate with each other. The communication between the network device 11 and the terminal 12 can include uplink communication and downlink communication. Uplink communication is the process by which the terminal 12 sends uplink data to the network device 11 and the network device 11 receives the uplink data sent by the terminal 12. Downlink communication is the process by which the network device 11 sends downlink data to the terminal 12 and the terminal 12 receives the downlink data sent by the network device 11.

[0113] In the evolution of mobile communication technology, the continuous changes in user needs and service models have driven the continuous upgrading of network technology. In fourth-generation (4G) mobile communication technology, with the popularization of mobile internet, users' network demands mainly focus on big data services such as watching or downloading movies and videos online. These services primarily demand high downlink speeds; therefore, 4G network design prioritizes ensuring downlink data transmission rates. Based on this, the 3rd Generation Partnership Project (3GPP) supports the use of Supplementary Downlink (SDL) bands in the 4G standard. This increases available time-frequency resources for transmission from network devices to terminals, thereby improving downlink data transmission rates. The SDL bands defined in the 4G standard include bands numbered 29, 32, 67, 69, 75, and 76. These bands have been widely used in 4G networks, effectively improving downlink data transmission rates.

[0114] However, with the emergence of new services such as self-media, 4K high-definition live streaming, AR, VR, and cloud services, not only is it required that the network continue to maintain high-speed downlink data transmission rates, but higher demands are also placed on uplink data transmission rates. Furthermore, the uplink transmit power of terminals is less than the transmit power of network equipment, resulting in limited uplink coverage as a bottleneck in 5G networks. Therefore, the 3GPP standard proposes the use of SUL bands in 5G to increase available time-frequency resources in the transmission direction from terminals to network equipment, thereby improving uplink data transmission rates. The SUL bands defined in the 5G standard include bands with frequency numbers n80, n81, n82, n83, n84, n95, n97, n98, and n99.

[0115] The 5G standard also supports combinations of SUL bands, including combinations of SUL bands and Time Division Duplex (TDD) bands, such as SUL_n24-n99 (meaning using the n24 band as the TDD band in the combination and the n99 band as the SUL band); SUL bands and Frequency Division Duplex (FDM) bands. Combinations of Division Duplexing (FDD) bands, such as SUL_n41-n80 (meaning that band n41 is used as the FDD band in the combined band, and band n80 is used as the SUL band in the combined band); combinations of SUL bands, TDD bands, and FDD bands, such as CA_n1_SUL_n78-n80 (meaning that carrier aggregation is used to combine bands n1, n41, and n80, using band n1 as the FDD band in the combined band, using band n78 as the TDD band in the combined band, and using band n80 as the SUL band in the combined band).

[0116] However, in the above-mentioned methods of using the SUL band or a combination of SUL bands to improve the uplink data transmission rate, the SDL band is not effectively utilized, the utilization rate of frequency domain resources is low, and the uplink data transmission rate and downlink data transmission rate cannot be improved simultaneously.

[0117] Based on this, this application provides a data transmission method, proposing a data transmission mode based on a combination of TDD band, SUL band and SDL band. Based on the combined frequency band, uplink data transmission and downlink data transmission can be carried out on all types of time slots of the TDD link, effectively utilizing the resources of the SDL band, improving the utilization rate of frequency domain resources, and improving the uplink data transmission rate and downlink data transmission rate.

[0118] It is understood that the technical solutions of this application embodiment can be applied to New Radio (NR) communication technology. NR refers to next-generation wireless access network technology, which can be applied to future evolution networks, such as 5G systems. The solutions in this application embodiment can also be applied to other wireless communication networks such as Wireless Fidelity (WIFI) and Long Term Evolution (LTE), and the corresponding names can be replaced by the names of the corresponding functions in other wireless communication networks.

[0119] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0120] Below Figure 1 Based on the example application scenarios, the technical solutions of this application and how this application solves the above-mentioned technical problems will be described in detail with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0121] Figure 2 A flowchart of the data transmission method provided in the embodiments of this application is shown below. Figure 2 As shown, the method includes:

[0122] S21, send indication information to the terminal. The indication information is used to indicate the combined frequency band, which includes the first TDD frequency band, the first SDL frequency band, and the first SUL frequency band.

[0123] In this embodiment of the application, the executing entity is a network device.

[0124] In some possible implementations, network devices may include base stations (BS) in a communication system or devices deployed in a radio access network (RAN) to provide wireless communication functions; that is, network devices may include devices in the RAN. For example, devices in the RAN may include evolved node B (eNB or eNodeB) in an LTE communication system, next-generation evolved node B (ng-eNB) in an NR communication system, next-generation node B (gNB) in an NR communication system, master node (MN) in a dual-connectivity architecture, and secondary node (SN) in a dual-connectivity architecture, etc., without specific limitations.

[0125] In some possible implementations, network devices may include devices in the core network (CN). For example, devices in the CN may include access and mobility management functions (AMF), user plane functions (UPF), session management functions (SMF), etc.

[0126] In some possible implementations, network devices can also be access points (APs) or relay stations in Wireless Local Area Networks (WLANs), communication devices in future evolved Public Land Mobile Networks (PLMNs), or communication devices in nonterrestrial networks (NTNs).

[0127] In some possible implementations, the terminal typically has wireless transceiver capabilities and can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as on ships); and it can be deployed in the air (e.g., on airplanes, balloons, and satellites). Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, VR terminal devices, AR terminal devices, wireless terminals in industrial control, vehicle-mounted terminal devices, wireless terminals in self-driving vehicles, wireless terminal devices in remote medical care, wireless terminal devices in smart grids, wireless terminal devices in transportation safety, wireless terminal devices in smart cities, wireless terminal devices in smart homes, wearable terminal devices, etc. The terminal involved in the embodiments of this application may also be referred to as terminal equipment, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile device, UE terminal equipment, wireless communication equipment, UE agent, or UE device, etc. The terminal may also be fixed or mobile.

[0128] The network device sends indication information to the terminal, and the terminal receives the indication information sent by the network device. The indication information is used to indicate the combined frequency bands supported by the network device, which include a first TDD frequency band, a first SDL frequency band, and a first SUL frequency band.

[0129] TDD is a duplex technology in wireless communication where uplink and downlink transmissions are separated by different carrier time slots. A TDD band is a frequency band usage method in wireless communication technology, where the same frequency band is shared in both uplink and downlink. For example, a TDD band may include bands with frequency numbers such as n40, n41, and n50, with the first TDD band being one of the TDD bands.

[0130] SDL is a technology that supplements the downlink. SDL technology enhances the coverage of the downlink by adding additional downlink spectrum resources. SDL bands are frequency bands used in wireless communication technology to supplement downlink coverage. SDL bands may include, for example, bands with frequency numbers such as n29, n67, n75, n79, etc. The first SDL band is one of the SDL bands.

[0131] SUL is a technology that supplements the uplink. SUL technology enhances the uplink coverage by adding additional uplink spectrum resources. SUL bands are frequency bands used in wireless communication technology to supplement uplink coverage. SUL bands may include, for example, bands with frequency numbers n80, n81, n82, n83, n84, n95, n97, n98, n99, etc. The first SUL band is one of the SUL bands.

[0132] S22, based on the combined frequency band, sends downlink data to the terminal and / or receives uplink data sent by the terminal.

[0133] Downlink data refers to data sent from a network device to a terminal via the downlink. The network device sends downlink data to the terminal based on a combined frequency band. Uplink data refers to data sent from a terminal to a network device via the uplink. The terminal sends uplink data to the network device based on a combined frequency band.

[0134] In one possible implementation, the network device transmits downlink data to the terminal using the first TDD frequency band in the downlink and hybrid time slots of the TDD link, and transmits downlink data to the terminal using the first SDL frequency band in the uplink time slots of the TDD link.

[0135] In one possible implementation, the terminal sends uplink data to the network device using the first TDD frequency band in the uplink time slot of the TDD link, and sends uplink data to the network device using the first SUL frequency band in the downlink time slot and the mixed time slot of the TDD link.

[0136] The data transmission method provided in this application embodiment involves a network device sending indication information to a terminal. This indication information specifies a combined frequency band, which includes a first TDD band, a first SDL band, and a first SUL band. Based on this combined frequency band, the network device sends downlink data to the terminal and / or receives uplink data from the terminal. By combining the first TDD band, the first SDL band, and the first SUL band, uplink and downlink data transmission can be performed on all types of time slots of the TDD link. This effectively utilizes the resources of the SDL band, improves the utilization rate of frequency domain resources, and also increases the uplink and downlink data transmission rates.

[0137] Based on any of the above embodiments, the solutions of the embodiments of this application will be further described below with reference to the accompanying drawings.

[0138] Figure 3 The signaling diagram for the data transmission method provided in the embodiments of this application is as follows: Figure 3 As shown, it includes:

[0139] S31, the terminal sends capability information to the network device.

[0140] The terminal sends capability information to the network device. The capability information includes the combined frequency band numbers supported by the terminal, wherein at least one candidate combined frequency band number is a combined frequency band number supported by the terminal.

[0141] Capability information refers to the terminal's ability to support combined frequency bands, such as the terminal's ability to support a combination of SDL, SUL, and TDD frequency bands. The combined frequency band number refers to the frequency band number corresponding to the combined frequency bands supported by the terminal, as indicated in the capability information reported by the terminal to the network device. The combined frequency bands include TDD, SUL, and SDL bands, and correspondingly, the combined frequency band number includes the frequency band number of the TDD band, the frequency band number of the SUL band, and the frequency band number of the SDL band. For example, the combined frequency band numbers are n41 (the frequency band number of the TDD band), n76 (the frequency band number of the SDL band), and n83 (the frequency band number of the SUL band).

[0142] Capability information is reported through the Band Combination List information element in the User Equipment Capability Information (UECapabilityInformation) message. The UECapabilityInformation message can be carried in the Radio Resource Control (RRC) message.

[0143] For example, network devices and terminals exchange signaling messages via RRC messages. RRC messages may include signaling messages such as UECapabilityInformation messages. UECapabilityInformation messages indicate various features and performance characteristics supported by the terminal. These messages may also include BandCombinationList elements, which indicate the combined frequency bands supported by the terminal. The BandCombinationList elements may include bandwidth combinations, which specifically describe the combined frequency bands.

[0144] For example, a Band Combination may include one or more band lists, each band list being used to specify the parameters of each band included in the combined band. Each band list may include one or more band parameters, each band parameter indicating a specific band configuration. Each band parameter may include NR band bandwidth (bandNR), which is used to indicate the band number of the combined band.

[0145] In this embodiment of the application, bandList consists of 3 BandParameters. The bandNR in the first BandParameter is used to indicate the band number of the SDL band; the bandNR in the second BandParameter is used to indicate the band number of the SUL band; and the bandNR in the third BandParameter is used to indicate the band number of the TDD band.

[0146] Among them, the combined frequency band number refers to the frequency band number of the SDL band, the frequency band number of the SUL band, and the frequency band number of the TDD band as indicated in bandNR.

[0147] Optionally, the terminal may send capability information, including the combined frequency band number, to the network device via the aforementioned RRC message.

[0148] S32, the network device sends instruction information to the terminal.

[0149] The indication information is used to indicate the combined frequency band. The indication information includes a first combined frequency band number and a first channel bandwidth. The first combined frequency band number is one of the candidate combined frequency band numbers, and the first channel bandwidth is one of the bandwidth combinations corresponding to the first combined frequency band number.

[0150] The candidate combination frequency band number can be any combination of the TDD band number, SDL band number, and SUL band number. For example, the TDD band number can be n40, n41, n51, etc.; the SDL band number can be n29, n67, n75, n76, etc.; and the SUL band number can be n80, n81, n82, n83, n84, n95, n97, n98, n99, etc. The candidate combination frequency band number can be any combination of the above frequency bands. For example, the candidate combination frequency band number can be n40, n29, n80, or it can be n41, n76, n83, etc.

[0151] The first combined frequency band number is a combination of frequency band numbers that meets the conditions for use as a combined frequency band. The first combined frequency band number is one of the candidate combined frequency band numbers. The first combined frequency band number includes the frequency band number of the first SUL band, the frequency band number of the first SDL band, and the frequency band number of the first TDD band. The combined frequency band conditions are that the channel bandwidth of the first SUL band is greater than or equal to the channel bandwidth of the first SDL band; and the channel bandwidth of the first TDD band is greater than or equal to the sum of the channel bandwidths of the first SUL band and the first SDL band.

[0152] In one possible implementation, the first combined frequency band number is determined by the following steps:

[0153] Step 1: Determine the band number of the first SDL band.

[0154] The band number of the first SDL band is the band number of the duplex type SDL band in the 5G standard. For example, the band number of the first SDL band can be at least one of the band numbers such as n29, n67, n75, n76, etc.

[0155] Step 2: Determine the band number of the first SUL band based on the frequency range and channel bandwidth of the first SDL band.

[0156] The first SUL band has a band number that is defined as a SUL band in the 5G standard, and the channel bandwidth of the first SUL band is greater than or equal to the channel bandwidth of the first SDL band. For example, the band number of the first SUL band can be at least one of the following band numbers: n80, n81, n82, n83, n84, n95, n97, n98, n99, etc.

[0157] Step 3: Determine the band number of the first TDD band based on the frequency range and channel bandwidth of the first SDL band and the first SUL band.

[0158] The first TDD band has a band number that is defined as a TDD band in the 5G standard, and the channel bandwidth of the first TDD band is greater than or equal to the sum of the channel bandwidth of the first SDL band and the channel bandwidth of the first SUL band. For example, the band number of the first TDD band can be at least one of the band numbers n40, n41, n51, etc.

[0159] The first combined frequency band number is determined through the above steps. For example, the first combined frequency band number can be a combination of frequency bands n76, n83, and n41. The frequency band information included in the first combined frequency band number is shown in Table 1 below:

[0160] Table 1

[0161] Frequency band number Uplink frequency range downlink frequency range duplex mode n41 2496MHz-2690MHz 2496MHz-2690MHz TDD n76 N / A 1427MHz-1432MHz SDL n83 703MHz-748MHz N / A SUL

[0162] N / A indicates that the frequency range of this band is not applicable in either uplink or downlink scenarios.

[0163] In one possible implementation, the channel bandwidth is determined by a set of bandwidth combinations. A set of bandwidth combinations represents the collection of channel bandwidth sizes used by each frequency band during data transmission. Table 2 below shows two sets of bandwidth combinations for the combined frequency bands n76, n83, and n41.

[0164] Table 2

[0165]

[0166]

[0167] In bandwidth combination set 1, if the channel bandwidth for data transmission of n76 is determined to be 5MHz, then the channel bandwidth for data transmission of n83 can be any one of 5MHz, 10MHz, 15MHz, or 20MHz. Similarly, the channel bandwidth for data transmission of n41 can be any one of 10MHz, 15MHz, 20MHz, 40MHz, 50MHz, 60MHz, 80MHz, 90MHz, or 100MHz that meets the combined frequency band bandwidth requirements. That is, the channel bandwidth of n41 must be greater than or equal to the sum of the channel bandwidths of n76 and n83. For example, the first channel bandwidth could be 5MHz for frequency band n76, 10MHz for frequency band n83, and 20MHz for frequency band n41; or, for another example, 5MHz for frequency band n76, 20MHz for frequency band n83, and 100MHz for frequency band n41, and so on.

[0168] In bandwidth combination set 2, if the channel bandwidth for data transmission of n76 is determined to be 5MHz, then the channel bandwidth for data transmission of n83 can be any one of 5MHz, 10MHz, 15MHz, 20MHz, 30MHz, and 40MHz. The channel bandwidth for data transmission of n41 can be any one of 10MHz, 15MHz, 20MHz, 30MHz, 40MHz, 50MHz, 60MHz, 80MHz, 90MHz, and 100MHz that meets the combined frequency band bandwidth requirements. That is, the channel bandwidth of n41 needs to be greater than or equal to the sum of the channel bandwidths of n76 and n83. The first channel bandwidth can be as shown in bandwidth combination set 1, for example, and will not be elaborated further here.

[0169] In the above embodiments, the method for determining the first combined frequency band number and the first channel bandwidth is described. After determining the first combined frequency band number and the first channel bandwidth, the network device sends indication information to the terminal based on the first combined frequency band number and the first channel bandwidth. The indication information includes at least one of the following: the frequency band number of the first TDD frequency band, the frequency band number of the first SDL frequency band, the frequency band number of the first SUL frequency band, the channel bandwidth of the first TDD frequency band, the channel bandwidth of the first SDL frequency band, and the channel bandwidth of the first SUL frequency band.

[0170] The band number and channel bandwidth of each frequency band are determined by the first combined band number and the first channel bandwidth mentioned above. For example, the indication information could be: the band number of the first TDD band is n41, the band number of the first SDL band is n76, the band number of the first SUL band is n83, the channel bandwidth of the first TDD band is 20MHz, the channel bandwidth of the first SDL band is 5MHz, the channel bandwidth of the first SUL band is 10MHz, and so on.

[0171] For example, the indication information is broadcast through the Serving Cell Configuration Common SIB information cell in System Information Block 1 (SIB1), and SIB1 can be carried in an RRC message.

[0172] Specifically, network devices and terminals exchange signaling messages via RRC messages. The RRC message may include SIB1, which contains basic cell information and access parameters. SIB1 may also include ServingCellConfigCommonSIB, which is used to indicate the uplink and downlink configuration.

[0173] In the 5G standard, ServingCellConfigCommonSIB includes three configurations: downlinkConfigCommon, uplinkConfigCommon, and supplementaryUplink. DownlinkConfigCommon indicates the downlink configuration for TDD / FDD bands, including the downlink frequency range (band number) and channel bandwidth for TDD / FDD. UplinkConfigCommon indicates the uplink configuration for TDD / FDD bands, including the uplink frequency range (band number) and channel bandwidth for TDD / FDD. SupplementaryUplink indicates the configuration for SUL bands, including the frequency range (band number) and channel bandwidth for SUL.

[0174] In this embodiment of the application, to support SDL configuration, an SDL configuration (SupplementaryDownlink) is added to ServingCellConfigCommonSIB to indicate the downlink frequency range (band number) and channel bandwidth of the SDL. The downlink frequency range (band number) and channel bandwidth of the SDL are determined by the downlink frequency information (frequencyInfoDL) in the cell parameters.

[0175] The network device sends instruction information to the terminal through the aforementioned RRC message.

[0176] S33, uplink and / or downlink data transmission between network devices and terminals.

[0177] TDD (Time Divided) links are a type of link in wireless communication technology. TDD links achieve bidirectional communication by sharing uplink and downlink within the same frequency band in a time-division multiplexing manner; that is, uplink and downlink data are transmitted in different time slots. A TDD link includes the downlink of TDD itself, which is also known as a normal downlink (NDL) link; and it also includes the uplink of TDD itself, which is also known as a normal uplink (NUL) link.

[0178] In the implementation of bidirectional communication based on TDD links, time-domain resources include uplink time slots, downlink time slots, and hybrid time slots of the TDD link. The proportions and lengths of uplink, downlink, and hybrid time slots can be dynamically adjusted according to network load. For example, the TDD band time slot configuration can be D:S:U = 7:1:2, where D represents downlink time slots, S represents hybrid time slots, and U represents uplink time slots.

[0179] For example, the transmission of uplink and downlink data between network devices and terminals based on combined frequency bands includes at least one of the following:

[0180] a. The terminal sends uplink data to the network device in the uplink time slot of the TDD link based on the first TDD frequency band. Correspondingly, the network device receives the uplink data sent by the terminal in the uplink time slot of the TDD link based on the first TDD frequency band.

[0181] In the uplink direction, within the uplink time slot of the TDD link, the terminal and network device can transmit uplink data based on the first TDD frequency band. Here, the uplink time slot of the TDD link refers to the time-domain resource used during data transmission, and the first TDD frequency band refers to the frequency-domain resource used during data transmission.

[0182] b. In the uplink time slot of the TDD link, the network device sends downlink data to the terminal based on the first SDL band. Correspondingly, in the uplink time slot of the TDD link, the terminal receives the downlink data sent by the network device based on the first SDL band.

[0183] In the downlink direction, in the uplink time slot of the TDD link, the terminal and network equipment can transmit downlink data based on the first SDL frequency band. The uplink time slot of the TDD link is the time domain resource used in the transmission process, and the first SDL frequency band is the frequency domain resource used in the data transmission process.

[0184] In the uplink time slot of the TDD link, the first SDL band in the combined frequency band is used to transmit downlink data, which increases downlink frequency domain resources and improves the transmission rate of downlink data.

[0185] c. The terminal sends uplink data to the network device in the downlink and hybrid time slots of the TDD link based on the first SUL band. Correspondingly, the network device receives the uplink data sent by the terminal in the downlink and hybrid time slots of the TDD link based on the first SUL band.

[0186] In the uplink direction, in the downlink and hybrid time slots of the TDD link, the terminal and network device can transmit uplink data based on the first SUL band. The downlink and hybrid time slots of the TDD link are time domain resources used in the data transmission process, and the first SUL band is a frequency domain resource used in the data transmission process.

[0187] In the downlink and hybrid time slots of the TDD link, the first SUL band in the combined frequency band is used to transmit uplink data, which increases uplink frequency domain resources and improves the transmission rate of uplink data.

[0188] d. The network device sends downlink data to the terminal in the downlink time slot and hybrid time slot of the TDD link based on the first TDD frequency band. Correspondingly, the terminal receives the downlink data sent by the network device in the downlink time slot and hybrid time slot of the TDD link based on the first TDD frequency band.

[0189] In the downlink direction, in the downlink time slots and hybrid time slots of the TDD link, the terminal and network equipment can transmit downlink data based on the first TDD frequency band. The downlink time slots and hybrid time slots of the TDD link are time domain resources used in the data transmission process, and the first TDD frequency band is the frequency domain resource used in the data transmission process.

[0190] The process of uplink and downlink data transmission will be described in detail below with reference to the accompanying diagram.

[0191] Figure 4 This is a schematic diagram illustrating a data transmission method provided in an embodiment of this application. Figure 4As shown, the time slot ratio of the first TDD band is D:S:U = 7:1:2.

[0192] In the uplink direction, within the uplink time slot of the TDD link, uplink data is transmitted using the first TDD frequency band, such as... Figure 4 The first TDD band, indicated by the "U" time slot, is used to transmit uplink data in the downlink and hybrid time slots of the TDD link, as shown in the example. Figure 4 The first SUL band, indicated by the "U" time slot, enables uplink data transmission across all time slots of the TDD link, such as... Figure 4 The uplink transmission slot "U" indicates the time slot.

[0193] In the downlink direction, downlink data is transmitted using the first TDD frequency band in the downlink and hybrid time slots of the TDD link, such as... Figure 4 The first TDD band's "D" and "S" indicate the time slots; in the uplink time slots of the TDD band, the first SDL band is used to transmit downlink data, such as... Figure 4 The first SDL band, indicated by the time slot "D", enables downlink data transmission across all time slots of the TDD link, such as... Figure 4 The downlink transmission slot “D” indicates the time slot.

[0194] In summary, the network device sends indication information to the terminal, which indicates the combined frequency band, including a first TDD band, a first SDL band, and a first SUL band. Based on the combined frequency band, it sends downlink data to the terminal and / or receives uplink data sent by the terminal. By combining the first TDD band, the first SDL band, and the first SUL band, in the uplink direction, uplink data is transmitted using the TDD link in the uplink time slots of the TDD link, and uplink data is transmitted using the first SUL link in the downlink and mixed time slots of the TDD link. In the downlink direction, downlink data is transmitted using the TDD link in the downlink and mixed time slots of the TDD link, and downlink data is transmitted using the SDL link in the uplink time slots of the TDD link. This effectively utilizes the resources of the SDL band, improves the utilization rate of frequency domain resources, and also increases the uplink and downlink data transmission rates.

[0195] Figure 5 Schematic diagram of the data transmission device provided in the embodiments of this application Figure 1 ,like Figure 5 As shown, the data transmission device 50 includes:

[0196] The first transceiver module 51 is used to send indication information to the terminal. The indication information is used to indicate the combined frequency band, which includes the first TDD frequency band, the first SDL frequency band, and the first SUL frequency band.

[0197] The first transceiver module 52 is used to send downlink data to the terminal and / or receive uplink data sent by the terminal based on the combined frequency band.

[0198] In one possible implementation, the indication information includes at least one of the following:

[0199] The band number of the first TDD band;

[0200] The frequency band number of the first SDL band;

[0201] The band number of the first SUL band;

[0202] Channel bandwidth of the first TDD band;

[0203] The channel bandwidth of the first SDL band;

[0204] The channel bandwidth of the first SUL band.

[0205] In one possible implementation, the first transceiver module 51 is specifically used for:

[0206] A first combined frequency band number is determined from at least one candidate combined frequency band number, the first combined frequency band number including the frequency band number of the first TDD frequency band, the frequency band number of the first SDL frequency band and the frequency band number of the first SUL frequency band;

[0207] In the bandwidth combination set corresponding to the first combination frequency band number, the first channel bandwidth is determined. The first channel bandwidth includes the channel bandwidth of the first TDD frequency band, the channel bandwidth of the first SDL frequency band, and the channel bandwidth of the first SUL frequency band.

[0208] Based on the first combination frequency band number and the first channel bandwidth, an instruction message is sent to the terminal.

[0209] In one possible implementation, the first transceiver module 51 is further configured to:

[0210] The terminal receives capability information, which includes the combined frequency band numbers supported by the terminal.

[0211] Among them, at least one candidate combination frequency band number is a combination frequency band number supported by the terminal.

[0212] In one possible implementation, the channel bandwidth of the first SUL band is greater than or equal to the channel bandwidth of the first SDL band.

[0213] The channel bandwidth of the first TDD band is greater than or equal to the sum of the channel bandwidth of the first SUL band and the channel bandwidth of the first SDL band.

[0214] In one possible implementation, the second transceiver module 52 is specifically used for at least one of the following:

[0215] In the uplink time slot of the TDD link, the uplink data sent by the terminal is received based on the first TDD frequency band;

[0216] During the uplink time slot, downlink data is sent to the terminal based on the first SDL band;

[0217] In the downlink and hybrid time slots of the TDD link, uplink data transmitted by the terminal is received based on the first SUL band;

[0218] Downlink data is transmitted to the terminal based on the first TDD frequency band in the downlink time slot and the mixed time slot.

[0219] Figure 6 Schematic diagram of the data transmission device provided in the embodiments of this application Figure 2 ,like Figure 6 As shown, the data transmission device 60 includes:

[0220] The third transceiver module 61 is used to receive indication information sent by the network device. The indication information is used to indicate the combined frequency band, which includes the first TDD frequency band, the first SDL frequency band, and the first SUL frequency band.

[0221] The fourth transceiver module 62 is used to receive downlink data sent by network devices and / or send uplink data to network devices based on the combined frequency band.

[0222] In one possible implementation, the indication information includes at least one of the following:

[0223] The band number of the first TDD band;

[0224] The frequency band number of the first SDL band;

[0225] The band number of the first SUL band;

[0226] Channel bandwidth of the first TDD band;

[0227] The channel bandwidth of the first SDL band;

[0228] The channel bandwidth of the first SUL band.

[0229] In one possible implementation, the third transceiver module 61 is specifically used for:

[0230] Send capability information to network devices, including the combined frequency band numbers supported by the terminal;

[0231] Among them, at least one candidate combination frequency band number is a combination frequency band number supported by the terminal.

[0232] In one possible implementation, the fourth transceiver module 62 is specifically used for at least one of the following:

[0233] In the uplink time slot of the TDD link, uplink data is sent to the network device based on the first TDD frequency band;

[0234] In the uplink time slot, downlink data transmitted by network devices is received based on the first SDL band;

[0235] In the downlink and hybrid time slots of the TDD link, uplink data is sent to network devices based on the first SUL band;

[0236] In the downlink time slot and the mixed time slot, downlink data transmitted by network devices is received based on the first TDD frequency band.

[0237] Figure 7 This is a schematic diagram of the structure of the data transmission device provided in the embodiments of this application, such as... Figure 7 As shown, it includes a memory 71 and a processor 72, wherein:

[0238] Memory 71 is used to store computer-executed instructions;

[0239] The processor 72 is configured to execute computer execution instructions from the memory to cause the data transmission device to perform the method executed by the terminal or network device in the above method embodiments.

[0240] All or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a readable memory. When the program is executed, it performs the steps of the above method embodiments; and the aforementioned memory (storage medium) includes: ROM (Read-only Memory), RAM (Random Access Memory), flash memory, hard disk, solid-state drive, magnetic tape, floppy disk, optical disk, and any combination thereof.

[0241] This application provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the method steps described in the above method embodiments.

[0242] This application also provides a computer program product, including a computer program that, when executed by a processor, can implement the method steps described in the above method embodiments.

[0243] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0244] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0245] 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, or indirect coupling or communication connection between apparatuses or units, and may be electrical, mechanical, or other forms.

[0246] The units described as separate components may or may not be physically separate. 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 the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0247] Furthermore, 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. The integrated unit can be implemented in hardware or as a software functional unit.

[0248] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned computer program can be stored in a computer-readable storage medium. When executed by a processor, the computer program implements the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0249] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A data transmission method, characterized in that, Applied to network devices, the method includes: Send indication information to the terminal, the indication information being used to indicate a combined frequency band, the combined frequency band including a first time division duplex (TDD) frequency band, a first supplementary downlink (SDL) frequency band, and a first supplementary uplink (SUL) frequency band; Based on the combined frequency band, downlink data is sent to the terminal and / or uplink data is received from the terminal.

2. The method according to claim 1, characterized in that, The instruction information includes at least one of the following: The frequency band number of the first TDD frequency band; The frequency band number of the first SDL band; The frequency band number of the first SUL band; The channel bandwidth of the first TDD band; The channel bandwidth of the first SDL band; The channel bandwidth of the first SUL band.

3. The method according to claim 2, characterized in that, Sending instruction information to the terminal includes: A first combined frequency band number is determined from at least one candidate combined frequency band number, the first combined frequency band number including the frequency band number of the first TDD frequency band, the frequency band number of the first SDL frequency band and the frequency band number of the first SUL frequency band; In the bandwidth combination set corresponding to the first combined frequency band number, a first channel bandwidth is determined, the first channel bandwidth including the channel bandwidth of the first TDD frequency band, the channel bandwidth of the first SDL frequency band and the channel bandwidth of the first SUL frequency band. The indication information is sent to the terminal based on the first combined frequency band number and the first channel bandwidth.

4. The method according to claim 3, characterized in that, The method further includes: Receive capability information sent by the terminal, the capability information including the combined frequency band numbers supported by the terminal; Wherein, the at least one candidate combined frequency band number is a combined frequency band number supported by the terminal.

5. The method according to any one of claims 1-4, characterized in that, The channel bandwidth of the first SUL band is greater than or equal to the channel bandwidth of the first SDL band; The channel bandwidth of the first TDD band is greater than or equal to the sum of the channel bandwidth of the first SUL band and the channel bandwidth of the first SDL band.

6. The method according to any one of claims 1-4, characterized in that, The step of sending downlink data to the terminal and / or receiving uplink data sent by the terminal based on the combined frequency band includes at least one of the following: In the uplink time slot of the TDD link, the uplink data sent by the terminal is received based on the first TDD frequency band; In the uplink time slot, downlink data is transmitted to the terminal based on the first SDL band; In the downlink time slot and hybrid time slot of the TDD link, uplink data sent by the terminal is received based on the first SUL band; Downlink data is transmitted to the terminal based on the first TDD frequency band in the downlink time slot and the mixed time slot.

7. A data transmission method, characterized in that, Applied to a terminal, the method includes: The system receives indication information sent by a network device, the indication information being used to indicate a combined frequency band, the combined frequency band including a first TDD frequency band, a first SDL frequency band, and a first SUL frequency band; Based on the combined frequency band, receive downlink data sent by the network device and / or send uplink data to the network device.

8. The method according to claim 7, characterized in that, The step of receiving downlink data sent by the network device and / or sending uplink data to the network device based on the combined frequency band includes at least one of the following: In the uplink time slot of the TDD link, uplink data is sent to the network device based on the first TDD frequency band; In the uplink time slot, downlink data transmitted by the network device is received based on the first SDL band; In the downlink and hybrid time slots of the TDD link, uplink data is sent to the network device based on the first SUL band; In the downlink time slot and the mixed time slot, downlink data transmitted by the network device is received based on the first TDD frequency band.

9. A data transmission device, characterized in that, include: Processor and memory; The memory stores computer-executed instructions; The processor executes computer execution instructions from the memory, causing the processor to perform the data transfer method as described in any one of claims 1-6, or causing the processor to perform the data transfer method as described in any one of claims 7-8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the data transmission method as described in any one of claims 1-6, or, when executed by a processor, are used to implement the data transmission method as described in any one of claims 7-8.

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