WO2018094713A1

WO2018094713A1 - Data transmission method, apparatus and system

Info

Publication number: WO2018094713A1
Application number: PCT/CN2016/107385
Authority: WO
Inventors: 庄宏成; 徐凯
Original assignee: 华为技术有限公司
Priority date: 2016-11-26
Filing date: 2016-11-26
Publication date: 2018-05-31
Also published as: CN109565763A

Abstract

The present invention relates to the technical field of wireless communications. Provided is a data transmission method. The method discloses: a base station acquiring a first code resource used for transmitting data with a user equipment (UE), and acquiring a second code resource used for transmitting date with other network devices, wherein the first code resource is different from the second code resource; the base station using a first time-frequency resource and the first code resource to send data to the UE, and using the first time-frequency resource and the second code resource to send data to the other network devices; and the base station using a second time-frequency resource and the first code resource to receive data from the UE, and using the second time-frequency resource and the second code resource to receive data from the other network devices. By means of the solution provided in the present embodiment, interference between wireless links can be reduced, and the utilization efficiency of wireless resources is improved, thereby improving the user experience.

Description

Data transmission method, device and system

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method, apparatus, and system.

Background technique

In order to increase user capacity and network capacity, base stations of next generation wireless networks need to be as close as possible to users. An ultra-dense network (UDN) came into being. In an ultra-dense network where wireless base stations are densely deployed, wireless backhaul links are generally used between base stations and other network devices, such as gateways, based on cost and other factors.

Due to the increasing scarcity of wireless spectrum resources, there is a need to share frequency bands between wireless backhaul links, similar to wireless access. In this way, not only interference exists between the wireless access links, but also interference between the wireless backhaul links, and the wireless access link and the wireless backhaul link may also have interference, especially in an ultra-dense network environment.

In order to reduce interference in various wireless links, time division multiplexing, frequency division multiplexing, space division multiplexing, or code division multiplexing are generally used, but the simple application of the above means avoids interference between wireless links. However, the utilization efficiency of radio resources is lowered.

Therefore, there is a need for a data transmission method that can reduce interference between wireless links and improve utilization efficiency of wireless resources.

Summary of the invention

The present application describes a data transmission method, apparatus and system.

In one aspect, an embodiment of the present application provides a data transmission method, including: acquiring, by a base station, a first code resource used by a user terminal UE to transmit data, and acquiring a second code resource used by another network device to transmit data, where The first code resource is different from the second code resource; the base station sends data to the UE by using a first time-frequency resource and the first code resource, and uses the first time-frequency resource and the first The second code resource transmits data to the other network device; the base station receives data from the UE by using the second time-frequency resource and the first code resource, and uses the second time-frequency resource and the second code Resources receive data from the other network devices. With the solution provided in this embodiment, the interference between the wireless links can be reduced, the utilization efficiency of the wireless resources can be improved, and the user experience is improved.

In a possible design, the first code resource is different from the second code resource, and the first code resource is orthogonal to the second code resource. In this way, interference between wireless links can be reduced.

In a possible design, the base station acquires a first code resource used for transmitting data with the user terminal UE, and acquires a second code resource used for transmitting data with other network devices, including: the base station receives from the control node. The first code resource and the second code resource.

In a possible design, the receiving, by the base station, the first code resource and the second code resource from the control node, including: the base station from the control plane S1-CP of the S1 interface or the application protocol X2AP of the X2 interface The control node receives the first code resource and the second code resource.

In a possible design, the first code resource includes a codebook of a sparse code multiple access SCMA, a signature series of a low density signature LDS, or a codebook of a non-orthogonal multiple access NOMA; the second code The resource includes a codebook of a sparse code multiple access SCMA, a signature series of a low density signature LDS, or a codebook of a non-orthogonal multiple access access NOMA; the first time frequency resource includes a subframe, a frequency band or a resource block RB; The second time-frequency resource includes a subframe, a frequency band, or a resource block RB.

In a possible design, the method further includes: the base station acquiring the first time-frequency resource and the second time-frequency resource.

In one possible design, the method is applied to an ultra-dense network UDN.

In one possible design, the method further includes the base station receiving a data transmission request from the UE.

In a possible design, the UE only has a radio link with the base station or a radio link exists between the UE and a plurality of base stations including the base station.

In a possible design, the method further includes: the base station receiving, from a control node, packet information to which the base station belongs, where the group information includes base station information, UE information, time-frequency resource information, or code resource information. at least one.

On the other hand, an embodiment of the present invention provides a base station, which has a function of realizing the behavior of a base station in the actual method. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the structure of the base station includes a processor and a transceiver configured to support the base station to perform the corresponding functions in the above methods. The transmitter is configured to support communication between the base station and the UE, and send information or instructions involved in the foregoing method to the UE, and receive information sent by the UE or instruction. The base station can also include a memory for coupling with the processor that stores the necessary program instructions and data for the base station.

In another aspect, an embodiment of the present invention provides a UE, where the UE has a function of implementing UE behavior in the foregoing method design. The UE may be a cellular UE. The function can be implemented by hardware, and the structure of the UE includes a transceiver and a processor. The corresponding software implementation can also be performed by hardware. The hardware or software includes one or more modules corresponding to the functions described above. The modules can be software and/or hardware.

In another aspect, an embodiment of the present invention provides a control node, which may include a controller/processor, a memory, and a communication unit. The controller/processor can be used to coordinate resource management and configuration between multiple base stations. The memory can be used to store program code and data for the control node. The communication unit is configured to support the control node to communicate with the base station and/or the UE, for example, to transmit time-frequency resources and code resource information used for transmitting data to the base station and/or the UE.

In another aspect, an embodiment of the present invention provides a communication system, where the system includes the base station and the UE, and the UE includes a cellular UE. Optionally, the control node in the above embodiment may also be included.

In still another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use by the base station/control node, including a program designed to perform the above aspects.

In still another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the UE, including a program designed to perform the above aspects.

According to the technical solution provided by the embodiment of the present invention, the base station uses different code resources to distinguish the UE from other network devices, and simultaneously sends data to the UE and the other network devices on the same time-frequency resource, and can be at the same time. Receiving data from the UE and the other network devices simultaneously on the frequency resource can not only reduce interference between the wireless links but also improve the utilization efficiency of the wireless resources and improve the user experience.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS In the following, the embodiments of the present invention will be briefly described, and the drawings in the following description are merely exemplary embodiments of the present invention. For the skilled person, other drawings can be obtained from these drawings without paying for creative labor.

FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention;

2 is a schematic diagram of a communication method according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a UE according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a control node according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

In order to solve the problem that the radio resource utilization efficiency cannot be improved while reducing the interference between the radio links in the prior art communication system, the embodiment of the present invention provides a solution based on the communication system shown in FIG. Improve resource utilization efficiency in communication systems. As shown in FIG. 1 , an embodiment of the present invention provides a communication system 100. The communication system 100 includes at least one base station (BS) and a plurality of UEs. The plurality of UEs in the communication system 100 include at least one UE that can be used for cellular communication. Cellular communication refers to communication between a UE and a base station. A UE performing cellular communication has a function of performing cellular communication with a base station, and may also be referred to as a cellular UE or a cellular terminal.

For example, in FIG. 1, multiple UEs may be identified as UEs 40A-40E, and multiple base stations may be identified as BS20, BS22, and BS24, respectively, and cellular communications may be performed between the UEs 40A-40E and the base stations 20-24, respectively. A cellular link exists between the UE 40A-40E and the base station 20-24.

In the solution of this embodiment, in the communication system 100 as described in FIG. 1, the multiple UEs may be located under the coverage of different base stations, and the multiple UEs may be served by different base stations. For example, UE 40A and UE 40B are located under the coverage of base station 22, UE 40B, UE 40C and UE 40E are located under the coverage of base station 20, UE 40D and UE 40E are located under the coverage of base station 24, and UE 40A, UE 40C and UE 40D are served by base station 22, base station 20 and base station 24, respectively. The UE 40B is served by the base station 22 and the base station 20; the UE 40E is served by the base station 20 and the base station 24. The plurality of base stations can transmit data over a wireless link with other network devices, such as access gateway 60, respectively. For example, in FIG. 1, base station 20, base station 22, and base station 24 can each perform wireless data transmission with access gateway 60. The base stations can exchange information with each other, and one of the base stations is controlled as a control node. The base station as the control node can perform unified resource scheduling and management according to the information sent by other base stations and the information obtained and maintained by itself. For example, in FIG. 1, the base station 20 can be used as a control node. Of course, the functions of the control node can also be implemented by other base stations. The embodiments of the present invention are not limited.

In the embodiment of the present invention, the communication system 100 may be various radio access technology (RAT) systems, such as, for example, code division multiple access (CDMA), time division multiple access (time division). Multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (single carrier FDMA, SC-FDMA) ) and other systems. The term "system" can be replaced with "network". A CDMA system can implement wireless technologies such as universal terrestrial radio access (UTRA), CDMA2000, and the like. UTRA may include wideband CDMA (WCDMA) technology and other CDMA variant technologies. CDMA2000 can cover the interim standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards. The TDMA system can implement a wireless technology such as a global system for mobile communication (GSM). An OFDMA system can implement such as evolved universal radio land access (evolved UTRA, E-UTRA), ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA And other wireless technologies. UTRA and E-UTRA are universal mobile telecommunications systems (UMTS) and UMTS evolved versions. The various versions of 3GPP in long term evolution (LTE) and LTE-based evolution are new versions of UMTS that use E-UTRA. In addition, the communication system 100 can also be applied to future-oriented communication technologies, such as a new radio (NR) system, and the technical solutions provided by the embodiments of the present invention are applicable to the communication system including the new communication technology, including the cellular communication. . The system architecture and the service scenario described in the embodiments of the present invention are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present invention, and do not constitute a limitation of the technical solutions provided by the embodiments of the present invention. The technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.

In the embodiment of the present invention, the base station (for example, the base station 20) is a device deployed in an ultra-dense network (UDN) to provide a wireless communication function for the UE. The base station may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like. In systems using different radio access technologies, the names of devices with base station functions may vary, for example, in a 5th generation (5G generation) system, called a g-node (gNB), in LTE. In the system, an evolved NodeB (eNB or eNodeB) is called a Node B or the like in a 3rd generation (3G) system. For the convenience of description, all of the present invention In the embodiment, the foregoing apparatus for providing a wireless communication function to the UE is collectively referred to as a base station or a BS.

In the embodiment of the present invention, the access gateway 60 is connected to one or more base stations, and is an interface between the base station and the core network, and can perform wireless data transmission with the one or more base stations to implement the core network and the one or more Data interaction between base stations to provide wireless communication services for user terminals. In the communication system shown in FIG. 1, the access gateway 60 may connect a plurality of base stations and provide wireless communication services for a plurality of cellular UEs covered by the plurality of base stations. For example, the base station may be a small station in a heterogeneous UDN, also known as a Non-standalone UDN, and the access gateway may be a macro base station that covers the small station. For another example, the base station may be a small station in a heterogeneous UDN, also called a standalone UDN, where the access gateway may be another small station, and wireless data transmission may be performed between the small stations. The description is not limited in the embodiment of the present invention.

The UE involved in the embodiments of the present invention may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem. The UE may also be referred to as a mobile station (MS), a terminal, a terminal equipment, and may also include a subscriber unit, a cellular phone, and a smart phone. Phone), wireless data card, personal digital assistant (PDA) computer, tablet computer, wireless modem, handheld, laptop computer, cordless phone Or a wireless local loop (WLL) station, a machine type communication (MTC) terminal, or the like. For convenience of description, in all embodiments of the present invention, the above-mentioned devices are collectively referred to as UEs.

It should be noted that the number and type of UEs included in the communication system 100 shown in FIG. 1 are merely exemplary, and the embodiment of the present invention is not limited thereto. For example, more cellular UEs that communicate with the base station may be included, which are not described in the drawings for the sake of brevity. Further, in the communication system 100 shown in FIG. 1, although the base station 20-24 and the plurality of UEs are shown, the communication system 100 may not be limited to include the base station and the UE, and may also include a core network. Devices or devices for carrying virtualized network functions, etc., will be apparent to those of ordinary skill in the art and will not be described in detail herein.

In the solution provided by the embodiment of the present invention, the base station acquires a first code resource used for transmitting data with the user terminal UE, and acquires a second code resource used for transmitting data with another network device, where the first code resource and the The second code resource is different; the base station uses the first time-frequency resource and the first code resource Transmitting, by the UE, data, and transmitting data to the other network device by using the first time-frequency resource and the second code resource; the base station using the second time-frequency resource and the first code resource from the UE Receiving data and receiving data from the other network device using the second time-frequency resource and the second code resource. With the solution provided in this embodiment, the interference between the wireless links can be reduced, the utilization efficiency of the wireless resources can be improved, and the user experience is improved.

It should be noted that the radio link between the base station and the user terminal is generally referred to as a radio access link, and is used by the base station to receive data that the user terminal needs to send to the core network side and send the data received from the core network side to the user. The radio link between the base station and other network devices, such as the access gateway, is generally referred to as a wireless backhaul link, and is used by the base station to receive data that needs to be sent to the user terminal on the core network side, and sends the data received from the user terminal. The data transmitted by the base station to the user terminal is referred to as wireless access downlink data, and the data received by the base station from the user terminal is referred to as wireless access uplink data; the data transmitted by the base station to other network devices is referred to as wireless backhaul uplink data. The data received by the base station from other networks is referred to as the wireless backhaul downlink data, which is not limited in the embodiment of the present invention.

In this embodiment, the first code resource is different from the second code resource, and the first code resource is orthogonal to the second code resource. In this way, interference between wireless links can be reduced.

Referring to FIG. 1, for example, the communication system 100 uses sparse code division multiple access (SCMA) two orthogonal orthogonal codebooks C1 to C5, and the first used by the base station 22 and the user terminal 40A to transmit data. The code resources are codebooks C1 and C4; the second code resources used by base station 22 and access gateway 60 to transmit data are codebooks C2 and C3.

In the embodiment of the present invention, the base station acquires a first code resource used for transmitting data with the user terminal UE, and acquires a second code resource used for transmitting data with another network device, where the base station receives the data from the control node. The first code resource and the second code resource.

In the embodiment of the present invention, the receiving, by the base station, the first code resource and the second code resource from the control node, includes: the base station adopts a control plane (S1 Control Plane, S1-CP) or X2 of the S1 interface. The X2 Application Protocol (X2AP) of the interface receives the first code resource and the second code resource from the control node.

In the embodiment of the present invention, the first code resource includes a codebook of an SCMA, a signature series of Low Density Signature (LDS), or a non-orthogonal multiple access (NOMA) a codebook; the second code resource includes a codebook of SCMA and a signature series of LDS Or a codebook of the NOMA; the first time-frequency resource includes a subframe, a frequency band, or a resource block (RB); and the second time-frequency resource includes a subframe, a frequency band, or an RB.

In the embodiment of the present invention, the method further includes: the base station acquiring the first time-frequency resource and the second time-frequency resource.

In the embodiment of the present invention, the method is applied to an ultra-dense network (UDN).

In this embodiment of the present invention, the method further includes: the base station receiving a data transmission request from the UE.

In the embodiment of the present invention, the UE only has a radio link with the base station, or a radio link exists between the UE and a plurality of base stations including the base station.

Referring to FIG. 1, the user terminal 40A only has a wireless link with the base station 22, but the user terminal 40B not only has a wireless link with the base station 22, but also has a wireless link with the base station 20.

In an embodiment of the present invention, the method further includes: the base station receiving, from a control node, packet information that the base station belongs, where the packet information includes at least one of base station information, UE information, time-frequency resource information, or code resource information. One.

The technical solution provided by the embodiment of the present invention is described below with reference to FIG. 2, and the technical solution provided by the embodiment of the present invention is applied to an ultra-dense network (UDN).

In section 201, the base station 20 receives a data transmission request sent by a user equipment (UE), such as the UE 40B.

In this embodiment, the base station 20 may implement the data transmission method described in the foregoing embodiment of the present invention, and may perform the data transmission method with reference to the configuration of FIG. 1.

In section 202, the base station 20 receives, from the control node, the first used by the UE 40B to transmit data through the control plane (S1 Control Plane, S1-CP) of the S1 interface or the X2 Application Protocol (X2AP) of the X2 interface. A code resource, with other network devices, such as a second code resource used by the access gateway 60 to transmit data, and a first time-frequency resource and a second time-frequency resource.

The first code resource is different from the second code resource.

Optionally, the first code resource includes a codebook of an SCMA, a signature series of Low Density Signature (LDS), or a codebook of Non-orthogonal Multiple Access (NOMA); The second code resource includes a codebook of SCMA, a signature series of LDS, or NOMA The first time-frequency resource includes a subframe, a frequency band, or a resource block (Resource Block, RB); and the second time-frequency resource includes a subframe, a frequency band, or an RB.

In 203, the base station sends the radio access downlink data to the UE 40B by using the first time-frequency resource and the first code resource, and simultaneously using the first time-frequency resource and the second code resource The other network device, such as access gateway 60, transmits wireless backhaul uplink data.

In section 204, the base station receives data from the UE 40B using a second time-frequency resource and the first code resource, and uses the second time-frequency resource and the second code resource from the other network device For example, access gateway 60 receives data.

According to the above method, the base station uses different code resources to distinguish the UE from other network devices, simultaneously sends data to the UE and the other network devices on the same time-frequency resource, and can simultaneously simultaneously from the same time-frequency resource. Receiving data by the UE and the other network devices can not only reduce interference between the wireless links but also improve the utilization efficiency of the wireless resources and improve the user experience.

In the embodiment provided by the present invention, the data transmission method provided by the embodiment of the present invention is introduced from the perspective of the interaction between the network elements and the network elements. It can be understood that each network element, such as a UE, a base station, a control node, etc., in order to implement the above functions, includes hardware structures and/or software modules corresponding to each function. Those skilled in the art will readily appreciate that the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

FIG. 3 shows a possible structural diagram of a base station involved in the above embodiment. The base station may be base station 20, base station 22 or base station 24 as shown in FIG.

The base station shown includes a transceiver 301, a controller/processor 302. The transceiver 301 can be used to support sending and receiving information between the base station and the UE in the foregoing embodiment. The controller/processor 302 can be used to perform various functions for communicating with a UE or other network device. On the uplink, the uplink signal from the UE is received via the antenna, coordinated by the transceiver 301, and further processed by the controller/processor 302 to recover the traffic data and signaling information transmitted by the UE. On the downlink, the traffic data and signaling messages are processed by the controller/processor 302 and are mediated by the transceiver 301 to generate the downlink. The link signal is transmitted to the UE via the antenna. The controller/processor 302 is further configured to perform the data transmission method as described in the foregoing embodiment, acquire the first code resource used by the base station and the user terminal UE to transmit data, and acquire the base station and other network device transmissions. The second code resource used by the data, the first code resource being different from the second code resource. The transceiver 301 is further configured to perform the data transmission method as described in the foregoing embodiment, using the first time-frequency resource and the first code resource to send data to the UE, and simultaneously using the first time-frequency resource and The second code resource sends data to the other network device. The transceiver 301 is further configured to receive data from the UE by using a second time-frequency resource and the first code resource, and simultaneously use the second time-frequency resource and the second code resource from the other network. The device receives the data. The transceiver 301 and the controller/processor 302 may also be used to perform the processing of the base station of FIG. 2 and/or other processes for the techniques described herein. The base station may also include a memory 303 that may be used to store program codes and data of the base station. The base station may further include a communication unit 304 for supporting the base station to communicate with other network entities. For example, it is used to support communication between a base station and other communication network entities shown in FIG. 1, such as access gateway 60 and the like.

It will be appreciated that Figure 3 only shows a simplified design of the base station. In practical applications, the base station may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all base stations that can implement the present invention are within the scope of the present invention.

FIG. 4 shows a simplified schematic diagram of one possible design structure of a UE involved in the above embodiment, which may be one of UE 40A-UE 40E as shown in FIG. 1. The UE includes a transceiver 401, a controller/processor 402, and may also include a memory 403 and a modem processor 404.

The transceiver 401 conditions (e.g., analog conversion, filtering, amplifying, upconverting, etc.) the output samples and generates an uplink signal that is transmitted via an antenna to the base station described in the above embodiments. On the downlink, the antenna receives the downlink signal transmitted by the base station in the above embodiment. Transceiver 401 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signals received from the antenna and provides input samples. In modem processor 404, encoder 4041 receives traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages. Modulator 4042 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples. Demodulator 4044 processes (e.g., demodulates) the input samples and provides symbol estimates. The decoder 4043 processes (e.g., deinterleaves and decodes) the symbol estimate and provides decoded data and signaling messages that are sent to the UE. The encoder 4041, the modulator 4042, the demodulator 4044, and the decoder 4043 may be The synthesized modem processor 404 is implemented. These units are processed according to the radio access technology employed by the radio access network (e.g., access technologies of LTE and other evolved systems). The transceiver 401 is further configured to perform processing performed by the UE in the foregoing embodiment.

The controller/processor 402 controls and manages the actions of the UE for performing the processing performed by the UE in the above embodiment. As an example, the transceiver 401 and the controller/processor 402 may also be used to support the UE in performing the content related to the UE in FIG. 2. Memory 403 is used to store program code and data for the UE.

Fig. 5 shows a schematic diagram of the control node involved in the above embodiment. The control node is not visible in Figure 1. The control node may include a controller processor 501, a memory 502, and a communication unit 503. The controller/processor 501 can be used to coordinate resource management and configuration between multiple base stations, and can be used to perform time-frequency resource and code resource configuration in the foregoing embodiment, and can perform frequency between communication links. Resource reuse and decision making. Memory 502 can be used to store program code and data for the control node. The communication unit 506 is configured to support the control node to communicate with the base station, for example, to send the configured time-frequency resource and code resource information to the base station.

The controller/processor for performing the above base station, UE, base station or control node of the present invention may be a central processing unit (CPU), a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), and an on-site Program gate array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.

The steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware, or may be implemented by a processor executing software instructions. The software instructions may be comprised of corresponding software modules that may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable hard disk, CD-ROM, or any other form of storage well known in the art. In the medium. An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in the user equipment. Of course, the processor and the storage medium may also reside as discrete components in the user equipment.

Those skilled in the art will appreciate that in one or more examples described above, the present invention is described The functionality can be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

The specific embodiments of the present invention have been described in detail with reference to the preferred embodiments of the present invention. The scope of the protection, any modifications, equivalent substitutions, improvements, etc., which are made on the basis of the technical solutions of the present invention, are included in the scope of the present invention.

Claims

A data transmission method, comprising:

The base station acquires a first code resource used for transmitting data with the user terminal UE, and acquires a second code resource used for transmitting data with another network device, where the first code resource is different from the second code resource;

The base station sends data to the UE by using the first time-frequency resource and the first code resource, and sends data to the other network device by using the first time-frequency resource and the second code resource;

The base station receives data from the UE using a second time-frequency resource and the first code resource, and receives data from the other network device using the second time-frequency resource and the second code resource.
The method according to claim 1, wherein the first code resource is different from the second code resource, and includes:

The first code resource is orthogonal to the second code resource.
The method according to claim 1, wherein the base station acquires a first code resource used for transmitting data with the user terminal UE, and acquires a second code resource used for transmitting data with another network device, including:

The base station receives the first code resource and the second code resource from a control node.
The method according to claim 3, wherein the receiving, by the base station, the first code resource and the second code resource from a control node, comprises: the base station passing a control plane S1-CP or X2 of an S1 interface The application protocol X2AP of the interface receives the first code resource and the second code resource from the control node.
The method according to any one of claims 1 to 4, wherein the first code resource comprises a codebook of a sparse code multiple access SCMA, a signature series of a low density signature LDS or a non-orthogonal multiple access Accessing a codebook of the NOMA; the second code resource includes a codebook of a sparse code multiple access SCMA, a signature series of a low density signature LDS, or a codebook of a non-orthogonal multiple access NOMA; The frequency resource includes a subframe, a frequency band, or a resource block RB; and the second time-frequency resource includes a subframe, a frequency band, or a resource block RB.
The method according to any one of claims 1 to 5, further comprising: the base station acquiring the first time-frequency resource and the second time-frequency resource.
Method according to any of the claims 1-6, characterized in that the method is applied in an ultra-dense network UDN.
The method according to any one of claims 1 to 7, further comprising: said base station A data transmission request is received from the UE.
A base station, comprising:

a processor, configured to acquire a first code resource used by the base station and the user terminal UE to transmit data, and acquire a second code resource used by the base station and other network devices to transmit data, where the first code resource and the The second code resource is different;

a transceiver, configured to send data to the UE by using the first time-frequency resource and the first code resource, and send data to the other network device by using the first time-frequency resource and the second code resource;

The transceiver is further configured to receive data from the UE by using a second time-frequency resource and the first code resource, and use the second time-frequency resource and the second code resource from the other network device Receive data.
The base station according to claim 9, wherein the processor is further configured to acquire a first code resource used by the base station and the user terminal UE to transmit data, and acquire the data transmitted by the base station and other network devices. The second code resource used, the first code resource being orthogonal to the second code resource.
The base station according to claim 9, wherein the processor is further configured to receive the first code resource and the second code resource from a control node.
The base station according to claim 11, wherein the processor is further configured to receive the first code resource from the control node by using a control plane S1-CP of an S1 interface or an application protocol X2AP of an X2 interface, and The second code resource.
The base station according to any one of claims 9 to 12, wherein the first code resource comprises a codebook of a sparse code multiple access SCMA, a signature series of a low density signature LDS or a non-orthogonal multiple access Accessing a codebook of the NOMA; the second code resource includes a codebook of a sparse code multiple access SCMA, a signature series of a low density signature LDS, or a codebook of a non-orthogonal multiple access NOMA; The frequency resource includes a subframe, a frequency band, or a resource block RB; and the second time-frequency resource includes a subframe, a frequency band, or a resource block RB.
The base station according to any one of claims 9 to 13, wherein the processor is further configured to acquire the first time-frequency resource and the second time-frequency resource.
The base station according to any one of claims 9 to 14, wherein the base station is applied to an ultra-dense network UDN.
The base station according to any one of claims 9 to 15, wherein the transceiver is further configured to receive a data transmission request from the UE.