Communication method based on mixed field and related device

Abstract

The embodiment of the invention provides a communication method based on a mixed field and a related device, which are applied to the technical field of wireless communication exemplarily, a network device divides terminal devices requesting service into terminal groups, acquires transmission parameters of each terminal device in the terminal groups based on attribute information of each terminal device in the terminal groups, and transmits the transmission parameters to the network device. The attribute information comprises at least one of transmission rate information, channel state information and far and near field types, sending a superposed signal to each terminal device, the superposed signal being a signal obtained by superposing signals sent to each terminal device in the terminal group based on the transmission parameter, in the embodiment of the invention, the mode of firstly dividing the terminal group and then determining the beam transmission parameter of the terminal group can obtain the transmission parameter more suitable for the terminal group, so that the resource multiplexing can be more suitable for the current scene, the flexibility and the reliability of the resource multiplexing can be improved, and the performance of the resource multiplexing can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, and in particular to a communication method based on a mixed field and related devices. BACKGROUND

[0002] The mixed field can be understood as a communication scenario in which, due to the deployment of ultra-dense networking and ultra-large-scale antennas, the electromagnetic wave propagation characteristics of near-field (spherical wave) and far-field (plane wave) coexist in the coverage range of a single base station.

[0003] In the mixed field, how to improve the performance of resource reuse is a problem to be solved at present. SUMMARY

[0004] Therefore, the present application provides a communication method based on a mixed field and related devices to solve at least part of the above problems. The disclosed technical solutions are as follows:

[0005] In a first aspect, a communication method based on a mixed field is provided. The method can be executed by a network device or a component (such as a circuit, a chip, or a chip system) configured in the network device. The method can also be implemented by a logic module or software that can implement all or part of the functions of the network device. The present application does not limit this. The following describes the network device as an example.

[0006] The method includes: dividing, by the network device, terminal devices requesting services into terminal groups, obtaining transmission parameters of each terminal device in the terminal groups based on attribute information of each terminal device in the terminal groups, the attribute information including at least one of transmission rate information, channel state information, and far-near field type, and sending, by the network device, a superimposed signal to each terminal device, the superimposed signal being a signal obtained by superimposing signals sent to each terminal device in the terminal groups based on the transmission parameters.

[0007] Compared with the conventional NOMA method of selecting a near-field beam first and then finding a far-field terminal device that can be served based on the near-field beam, the method provided in the first aspect divides terminal groups first and then determines beam transmission parameters of the terminal groups. This method can obtain transmission parameters more suitable for the terminal groups, so that the resource reuse is more suitable for the current scenario, which is beneficial to improving the flexibility and reliability of resource reuse, thereby improving the performance of resource reuse.

[0008] In some implementations of the first aspect, the manner of dividing the terminal devices requesting services into terminal groups comprises: dividing the terminal devices requesting services into terminal groups based on grouping rules, the grouping rules comprising at least one of: preferentially selecting near-field terminal devices to form terminal groups, and preferentially dividing terminal devices with different channel quality (e.g., with a large difference) into one terminal group. Because electromagnetic waves have the characteristic of energy aggregation in the near field, preferentially selecting near-field terminal devices as devices in the terminal groups has less impact on the communication of other terminal devices outside the terminal groups, and is conducive to improving the success rate of terminal device decoding. Preferentially dividing terminal devices with a large difference in channel quality into one terminal group is conducive to improving the success rate of the SIC decoding manner corresponding to NOMA. For example, the terminal devices with different channel quality (e.g., with a large difference) can be limited by a channel quality condition.

[0009] In some implementations of the first aspect, the manner of dividing the terminal devices requesting services into terminal groups based on grouping rules comprises: dividing terminal devices that satisfy a distance condition with a target near-field terminal device as paired terminal devices, and dividing the target near-field terminal device and the paired terminal devices into the same terminal group. By configuring the distance condition, the target near-field terminal device and the paired terminal devices can be terminal devices that are close in distance, and thus, by being divided into the same terminal group, it is conducive to configuring the same beam, thereby laying the foundation for saving beam resources.

[0010] In some implementations of the first aspect, the process of finding terminal devices that satisfy a distance condition with a target near-field terminal device comprises: sequentially finding terminal devices that satisfy a distance condition with the target near-field terminal device based on an order of first finding near-field terminal devices and then finding far-field terminal devices. The order of first finding near-field terminal devices and then finding far-field terminal devices is conducive to preferentially dividing near-field terminal devices into terminal groups, thereby reducing the impact on other terminal devices.

[0011] In some implementations of the first aspect, the target near-field terminal device is selected based on transmission rate information, for example, in an order from high to low according to the transmission rate requirement, each near-field terminal device is sequentially selected as the target near-field terminal device, which is conducive to preferentially meeting the requirements of terminal devices with high transmission rate requirements.

[0012] In some implementations of the first aspect, after dividing the target near-field terminal device and the paired terminal devices into the same terminal group, the method further comprises: configuring the terminal devices in the terminal group to use the same beam, which is conducive to saving beam resources.

[0013] In some implementations of the first aspect, the terminal devices requesting services are divided into terminal groups based on the grouping rule, and the method further includes: in the absence of the target near-field terminal device and / or the paired terminal device, at least two terminal devices with different channel quality (e.g., with a large difference) are divided into the same terminal group. By configuring at least one of the channel quality conditions (e.g., distance from the base station and channel quality parameter (e.g., CSI)), for example, at least two terminal devices with a large difference in channel quality can be divided into the same terminal group, which is beneficial to improve the success rate of SIC decoding.

[0014] In some implementations of the first aspect, the manner of obtaining the transmission parameters of the terminal devices in the terminal group based on the attribute information of the terminal devices in the terminal group includes: based on the transmission rate information and the channel model of the terminal devices in the terminal group, obtaining the beamforming matrix of the first beam and the allocation ratio of the transmission power, and the terminal devices in the terminal group use the same beam. Because the transmission parameters (the beamforming matrix and the allocation ratio of the transmission power) are obtained based on the transmission rate information and the channel model, the transmission parameters can better meet the transmission rate requirements and channel characteristics of the terminal devices in the terminal group, and for the terminal devices using the same beam, the allocation ratio of the transmission power is obtained, and there is no need to obtain the beamforming matrix respectively, which can reduce the complexity of calculation.

[0015] In some implementations of the first aspect, the manner of obtaining the transmission parameters of the terminal devices in the terminal group based on the attribute information of the terminal devices in the terminal group includes: taking the position of the first terminal device in the terminal group as the energy focusing point of the first beam. Because the first terminal device is a near-field terminal device, the rate requirement of the first terminal device is higher than that of the second terminal device, and / or the channel state of the first terminal device is better than that of the second terminal device, it can be known that the first terminal device is a terminal device with higher service requirement in the terminal group, and the second terminal device is a terminal device with lower service requirement in the same terminal group. Therefore, the position of the first terminal device is taken as the energy focusing point of the first beam. For example, in the case of a single beam, as long as there is a near-field terminal device, the beam takes the position of the near-field terminal device as the energy focusing point, which is beneficial to preferentially guarantee the service requirement of the terminal device with higher service requirement.

[0016] In some implementations of the first aspect, the transmission parameters of the terminal devices in the terminal group are obtained based on the attribute information of the terminal devices in the terminal group, and the method further includes: taking the central direction of the terminal devices in the terminal group as the direction of the first beam, and the terminal devices in the terminal group are all far-field terminal devices, and the central direction is determined based on the azimuth angle of the terminal devices. This determination of the beam direction is more suitable for a scenario in which the terminal devices in the terminal group are all far-field terminal devices, thereby obtaining a more accurate direction of the beam.

[0017] In some implementations of the first aspect, the manner of obtaining the transmission parameters of the terminal devices in the terminal group based on the attribute information of the terminal devices in the terminal group includes: obtaining the beamforming matrix of the first beam and the beamforming matrix of the second beam based on the transmission rate information and the channel model of the terminal devices in the terminal group, and the terminal devices in the terminal group use different beams, and the different beams include the first beam and the second beam. It can be seen that, in the case where the terminal devices in the terminal group use different beams, the beamforming matrix of each of the different beams is obtained based on the transmission rate information and the channel model of the terminal devices in the terminal group, so that the obtained beamforming matrix is more in line with the rate requirement and the channel characteristics of the terminal devices in the terminal group, and is beneficial to further improve the resource multiplexing performance.

[0018] In some implementations of the first aspect, the obtaining of the transmission parameters of the terminal devices in the terminal group based on the attribute information of the terminal devices in the terminal group further includes: taking the position of the near-field terminal device as the energy focusing point of the first beam, and taking the direction of the far-field terminal device as the direction of the second beam. This manner of determining the direction of the near-field beam (the first beam) and the direction of the far-field beam (the second beam) based on the characteristics of electromagnetic waves in the near field and the far field is beneficial to improve the communication performance.

[0019] In some implementations of the first aspect, the process of determining the near-far-field type of the terminal device based on the azimuth information of the terminal device includes: dividing the terminal device into a near-field terminal device or a far-field terminal device based on the size relationship between the distance value of the terminal device and the first threshold value, the distance value of the terminal device is the distance between the terminal device and the network device, and the first threshold value is determined based on the aperture of the antenna of the network device and the azimuth angle of the terminal device. The near-field terminal device or the far-field terminal device is determined based on the size relationship between the distance value and the first threshold value, which is in line with the characteristics of distinguishing near-field electromagnetic waves and far-field electromagnetic waves by distance, and the first threshold value is determined based on the aperture of the antenna of the network device and the azimuth angle of the terminal device, so that the first threshold value is more suitable for the deployment scenario of the antenna and the position of the terminal device, and therefore the division of the near-far-field type has higher accuracy.

[0020] In some implementations of the first aspect, before the superimposed signal is sent to each terminal device, the network device further indicates SIC decoding to a strong terminal device in the terminal group and indicates non-SIC decoding to a weak terminal device in the terminal group. The strong terminal device is a terminal device with higher communication requirements in the terminal group, and the weak terminal device is a terminal device with lower communication requirements than the strong terminal device in the same terminal group. Configuring the decoding mode for the terminal device helps to improve the decoding success rate of the terminal device.

[0021] In a second aspect, a communication apparatus is provided. The communication apparatus includes a processing module and a transceiver module. The processing module is configured to divide terminal devices requesting services into terminal groups, and obtain transmission parameters of each terminal device in the terminal groups based on attribute information of each terminal device in the terminal groups. The attribute information includes at least one of transmission rate information, channel state information, and near-far field type. The transceiver module is configured to send a superimposed signal to each terminal device. The superimposed signal is obtained by superimposing signals sent to each terminal in the terminal groups based on the transmission parameters.

[0022] The second aspect is a device-side implementation corresponding to the first aspect. The explanations, supplements, and beneficial effects described with respect to the first aspect also apply to the second aspect, and will not be repeated.

[0023] In a third aspect, a communication apparatus is provided. The communication apparatus includes a processor. The processor is coupled with a memory and is configured to execute instructions or data in the memory to implement the method in any possible implementation of the first aspect. Optionally, the communication apparatus further includes the memory. Optionally, the communication apparatus further includes a communication interface, and the processor is coupled with the communication interface.

[0024] In one implementation, the communication interface can be a transceiver, or an input / output interface.

[0025] In another implementation, the communication apparatus is a chip configured in a network device. When the communication apparatus is a chip configured in a network device, the communication interface can be an input / output interface.

[0026] In a fourth aspect, a processor is provided. The processor includes an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor performs the method in any possible implementation of any aspect.

[0027] In the implementation process, the processor can be one or more chips, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a flip-flop, various logic circuits, etc. The input signal received by the input circuit can be received and input by, for example but not limited to, a receiver, the signal output by the output circuit can be output to and transmitted by, for example but not limited to, a transmitter, and the input circuit and the output circuit can be the same circuit which is used as the input circuit and the output circuit at different times. The embodiments of the present application do not limit the specific implementation of the processor and various circuits.

[0028] In a fifth aspect, a communication apparatus is provided, including a processor and a memory. The processor is configured to read instructions stored in the memory, and is configured to receive signals via a receiver, and transmit signals via a transmitter, to perform the method in any possible implementation of any of the preceding aspects.

[0029] Optionally, the processor is one or more, and the memory is one or more.

[0030] In a sixth aspect, a computer program product is provided, including a computer program (which can also be referred to as code or instructions), which, when executed by a computer, causes the computer to perform the method in any possible implementation of any of the preceding aspects.

[0031] In a seventh aspect, a computer-readable storage medium is provided, which stores a computer program (which can also be referred to as code or instructions), which, when executed by a computer, causes the computer to perform the method in any possible implementation of any of the preceding aspects.

[0032] In an eighth aspect, the embodiments of the present application provide a chip system, which includes one or more processors configured to call and execute instructions stored in a memory, so that the method in any of the preceding aspects or any possible implementation of the aspects is performed. The chip system can be composed of a chip, or can include a chip and other discrete devices.

[0033] The chip system can include an input circuit or interface for transmitting information or data, and an output circuit or interface for receiving information or data.

[0034] In a ninth aspect, a communication system is provided, including the network device described above. Optionally, the communication system can further include other devices in communication with the network device. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A schematic diagram of a communication system to which the embodiments of the present application are applied;

[0036] Figure 2 An example diagram for a near field terminal and a far field terminal in a mixed field;

[0037] Figure 3 A flow chart of a communication method based on a mixed field provided by an embodiment of the present application;

[0038] Figure 4 A flow chart for determining the near field type or far field type of a terminal device by a base station;

[0039] Figure 5 A structural example diagram of a communication device provided by an embodiment of the present application;

[0040] Figure 6 A structural example diagram of another communication device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing the specific embodiments and are not intended to be limiting to the present application. As used in the specification and the appended claims of the present application, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that “one or more” as used in the embodiments of the present application means one, two, or more than two; “and / or” describes the associated relationship of associated objects, which means that there can be three kinds of relationships; for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character “ / ” generally represents an “or” relationship between the associated objects.

[0042] In the present specification, the reference to “one embodiment” or “some embodiments” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, the appearances of the phrases “in one embodiment,” “in some embodiments,” “in other embodiments,” “in additional embodiments,” and so on, in various places in the specification are not necessarily all referring to the same embodiment, unless otherwise specifically noted. The terms “comprising,” “including,” “having,” and their variants, mean “including but not limited to,” unless otherwise specifically noted.

[0043] The plurality referred to in the embodiments of the present application refers to greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the terms "first", "second", and the like are used only for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor indicating or implying an order.

[0044] The technical solutions provided by the present application can be applied to various communication systems, such as global system for mobile communications (GSM) system, general packet radio service (GPRS), wireless local area network (WLAN), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), side link communication system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, non-terrestrial network (NTN) communication system, 5th generation (5G) mobile communication system or new radio access technology (NR). Among them, the 5G mobile communication system can include non-standalone (NSA) and / or standalone (SA). The technical solutions provided by the present application can also be applied to future communication systems. The present application does not limit this.

[0045] Figure 1 is a schematic diagram of a communication system to which the embodiments of the present application are applied. The communication system can include a network device, such as Figure 1 The network device 1. The communication system can also include a terminal device, such as Figure 1 The terminal device 2 is shown. The network device 1 and the terminal device 2 can communicate through a wireless link.

[0046] Figure 1 An example of a network device 1 and a terminal device 2 is shown. Optionally, the communication system can also include multiple network devices and / or multiple terminal devices.

[0047] The network device in the present application can be a device of a network side such as an access network, a core network device, etc. The access network device is also sometimes referred to as an access node. The access network device has a wireless transceiving function and is used to communicate with a terminal. The access network device includes, but is not limited to, a base station in the above-mentioned communication system, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5G mobile communication system, an access network device or a module of an access network device in an open RAN (ORAN) system, a satellite in an NTN communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. The access network device can also be a module or unit capable of realizing part of the function of a base station. The access network device can be a macro base station, a micro base station or an indoor station, a relay node or a donor node, or a wireless controller in a cloud radio access network (CRAN) scenario. Optionally, the access network device can also be a server, a wearable device, or a vehicle-mounted device, etc. For example, the access network device in vehicle to everything (V2X) technology can be a road side unit (RSU). Multiple access network devices in a communication system can be the same type of base station or different types of base stations. The base station can communicate with the terminal directly or through a relay station. The terminal can communicate with multiple base stations in different access technologies. The embodiments of the present application do not limit the specific technology and specific device form of the access network device. In the present application, the access network device is referred to as a network device.

[0048] In the present application, the device for realizing the function of the network device can be a network device or a device capable of supporting the network device to realize the function, such as a processor, a circuit, a chip, or a chip system, etc., which can be installed in the network device or connected with the network device for use. In the technical solutions provided in the present application, the device for realizing the function of the network device is taken as an example to describe the technical solutions provided in the present application.

[0049] The terminal device in the present application can be a wireless terminal device capable of receiving network device scheduling and indication information. The wireless terminal device can be a device that provides voice and / or data connectivity to a user, or a handheld device with wireless connection function, or other processing devices connected to a wireless modem. For example, the terminal device can communicate with one or more core networks or the Internet through a radio access network (RAN). The terminal device can also be referred to as a terminal, user equipment (UE), mobile station, mobile terminal, etc. The terminal device can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), ultra-reliable low-latency communication (URLLC), virtual reality, augmented reality, industrial control, autonomous driving, remote medical treatment, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, or satellite communication, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, aircraft (such as unmanned aerial vehicle, helicopter, airplane), hot air balloon, ship, robot, mechanical arm, or smart home device, etc. The embodiments of the present application do not limit the form of the terminal device.

[0050] In the present application, the device for realizing the function of the terminal device can be a terminal device, or a device capable of supporting the terminal device to realize the function, such as a processor, circuit, chip, chip system, etc., which can be installed in the terminal device or connected with the terminal device for use. In the technical solutions provided in the present application, the device for realizing the function of the terminal device is taken as an example to describe the technical solutions provided in the present application. The terminal device can be referred to as a terminal for short.

[0051] The access network device and / or the terminal device can be fixed or mobile. The access network device and / or the terminal device can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on aircraft, balloons and artificial satellites in the air. The application embodiments do not limit the application scenarios of the access network device and the terminal device. The access network device and the terminal device can be deployed in the same scenario or different scenarios, for example, the access network device and the terminal device are deployed on land at the same time; or the access network device is deployed on land and the terminal device is deployed on the water surface, etc., which will not be listed one by one.

[0052] In actual applications, a terminal can be assisted by multiple network devices to implement wireless access, and different network devices respectively implement part of the functions of a base station. For example, a network device can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately arranged or can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0053] In different systems, the CU (or CU-CP and CU-UP), DU, or RU can also have different names, but those skilled in the art can understand their meanings. For example, in an ORAN system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. Any of the CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. The CU (or CU-CP and CU-UP), DU, and RU can implement different protocol layer functions.

[0054] Figure 2 is Figure 1 An example diagram of near-field terminals and far-field terminals in a hybrid field based on is shown in FIG. 1. A network device (such as a base station) 1 transmits signals using a large-scale antenna array 11. Based on the distance between a terminal device 2 and the network device 1, the terminal device 2 is divided into a near-field terminal device 21 and a far-field terminal device 22. It can be understood that the near-field terminal device 21 is closer to the network device 1 than the far-field terminal device 22. The manner of distinguishing near-field terminal devices from far-field terminal devices will be described in detail in conjunction with the following embodiments. The near-field terminal device can be referred to simply as a near-field terminal, and the far-field terminal device can be referred to simply as a far-field terminal.

[0055] The inventors found in the course of research that the traditional resource reuse technology has the following problems: the orthogonal multiple access (OMA) relies on the hard partition of time domain, frequency domain and code domain resources, and the resource fragmentation is serious in dense scenarios, and the system capacity is limited; the non-orthogonal multiple access (NOMA) serves multiple users through power domain or codebook superposition, but relies on ideal channel state information (CSI), and the error increases dramatically when the near-field channel changes rapidly; the large-scale multiple-input multiple-output (MIMO) beamforming utilizes spatial degrees of freedom to multiplex users, but the near-field beam "waist area" narrows, and it is difficult to cover a wide range of scattered devices.

[0056] Especially for mixed fields, the above resource reuse technology has the following problems:

[0057] 1. Low resource reuse efficiency: the large-scale fading of far-field terminal devices and the phase-sensitive characteristics of near-field terminal devices are mixed, and the existing non-orthogonal transmission scheme has a significant increase in error rate.

[0058] 2. Anti-interference failure: the dense deployment of network devices such as base stations in mixed fields leads to blurred cell boundaries and significantly increased co-channel interference, so the traditional interference coordination algorithm in the above reuse technology cannot adapt to mixed fields.

[0059] 3. Poor scalability: the explosive growth of Internet of Things devices, but the limited orthogonal pilot resources, leading to a large terminal device access conflict rate in dense scenarios.

[0060] In order to solve at least one of the above problems, the application provides a communication method for a mixed field, a network device divides terminal devices requesting services into terminal groups, obtains transmission parameters of each terminal device in the terminal group based on attribute information of each terminal device in the terminal group, and sends superimposed signals to each terminal device. The superimposed signal is a signal obtained by superimposing signals sent to each terminal in the terminal group based on the transmission parameters. Compared with the traditional NOMA, the terminal groups are divided first, and then the transmission parameters of each terminal device in the terminal group are obtained based on the attribute information of each terminal in the terminal group, which has a high degree of "customization". That is, in the resource allocation process, the differentiated service requirements (such as transmission rate requirements) of terminal devices and the changes of network environment (such as channel state, far and near field type) are fully considered, so that the signal sent based on the transmission parameters is beneficial to improve the efficiency and performance of resource reuse.

[0061] The schemes provided by the present application will be described in detail below in combination with corresponding flowcharts. It can be understood that the main bodies of the interaction in the illustrative flowcharts provided by the present application are different devices (such as terminal devices and network devices) as an example to illustrate the method, but the present application does not limit the main bodies of the interaction. For example, the devices (such as terminal devices and network devices) in the illustrative flowcharts can also be chips, chip systems or processors supporting the devices to implement the method, and can also be logical modules or software capable of implementing all or part of the functions of the devices.

[0062] Here, it is uniformly stated that the messages or signaling interactions involved in the interaction processes of the embodiments of the present application can adopt messages or signaling in standards or newly introduced messages or signaling, and the embodiments of the present application do not make specific limitations.

[0063] Figure 3 The present application provides a communication method based on a hybrid field, and in the embodiment, a base station is taken as an example of a network device, Figure 3 In the embodiment, two terminal devices in a terminal group, i.e., a strong terminal device and a weak terminal device, are taken as an example for description, and the steps performed by the terminal devices have the same reference numerals, but it does not mean that the steps with the same reference numerals are performed at the same time.

[0064] Figure 3 The embodiment includes the following steps:

[0065] S11, the terminal device sends a service request, and correspondingly, the base station receives the service request.

[0066] For example, the terminal device sends the service request when there is a service demand, such as a voice service demand.

[0067] The service request includes a transmission rate demand, and an example of the transmission rate demand is a minimum transmission rate.

[0068] S12, the base station divides the terminal device sending the service request into a terminal group.

[0069] The sending of the service request can be understood as a request for a service, and therefore, the terminal device sending the service request received by the base station in S11 is the terminal device sending the service request.

[0070] The terminal group is a combination of at least two terminal devices, and the terminal group can also be referred to as a terminal pair, a user group or a user pair, which is not limited here. The terminal group divided in this step is a terminal device that will use resource reuse technology for communication.

[0071] An example of the resource reuse technology is NOMA, at least two terminal devices in a terminal group use NOMA for communication, in order to improve the performance of resource reuse in a mixed field, unlike the conventional NOMA, in the embodiment, the terminal group is first divided, and then the transmission parameters are configured based on the attributes of the terminal devices in the terminal group, which will be described in detail in combination with the following steps.

[0072] In some implementations, the terminal devices requesting services are divided into terminal groups based on grouping rules, and the grouping rules include at least one of the following:

[0073] 1. Preferentially selecting near-field terminal devices to form a terminal group.

[0074] Because the electromagnetic wave in the near field is equivalent to a spherical wave, the electromagnetic wave has the characteristic of energy aggregation in the near field, therefore, the beam for one terminal device has less impact on the communication of other terminal devices, that is, the near-field beam used by the terminal group A has less impact on the communication of terminal devices outside the terminal group A, which is not only conducive to improving the anti-interference performance, but also conducive to improving the success rate of terminal device decoding, therefore, the near-field terminal device is preferentially selected as the device in the terminal group.

[0075] 2. Preferentially dividing terminal devices with different channel qualities (such as large differences) into a terminal group.

[0076] In the case of using NOMA, the corresponding terminal device decoding needs to use the successive interference cancellation (SIC) technology, the inventors have found that in the case of different channel qualities (such as large differences) of terminal devices, the performance of SIC is better, therefore, in order to improve the performance of SIC to ensure the success of SIC decoding, in the embodiment, terminal devices with large differences in channel quality are preferentially divided into a terminal group.

[0077] The above rules will be illustrated by taking an example of a terminal group containing two terminal devices.

[0078] In some implementations, terminal devices that satisfy the distance condition with the target near-field terminal device are taken as paired terminal devices, the target near-field terminal device and the paired terminal devices are divided into the same terminal group, and the terminal groups are divided based on the distance condition, which can lay a foundation for saving beam resources, which can be specifically referred to the following content.

[0079] In the embodiment, the terminal devices requesting services are divided into near-field terminal devices and far-field terminal devices from the perspective of far field and near field, and the specific division method will be described in combination with the flow shown in Figure 4 .

[0080] In accordance with the rule of preferentially selecting the near-field terminal device to form the terminal group, pairing is first performed from the target near-field terminal device.

[0081] The target near-field terminal device refers to a near-field terminal device selected from the near-field terminal devices. For example, the target near-field terminal device is selected based on the transmission rate information. For example, the near-field terminal devices requesting services are sorted in descending order of transmission rate requirements to obtain a near-field terminal device sequence (which can be referred to as a first sequence), and each terminal device in the near-field terminal device sequence is sequentially selected as the target near-field terminal device starting from the first device in the near-field terminal device sequence. The devices for pairing are sequentially determined in descending order of transmission rate requirements, which is beneficial to preferentially meet the terminal devices with higher transmission performance requirements.

[0082] It can be understood that, for any target near-field terminal device, the terminal devices meeting the distance condition with the target near-field terminal device are selected as the pairing terminal devices.

[0083] The distance condition is used to limit the proximity, for example, the distance condition is that the difference in azimuth angle is not greater than a preset azimuth angle threshold. For example, for any target near-field terminal device, the azimuth angle of the target near-field terminal device is obtained, and the terminal devices with a difference in azimuth angle not greater than the preset azimuth angle threshold are selected as the pairing terminal devices of the target near-field terminal device.

[0084] For example, in accordance with the rule of preferentially selecting the near-field terminal device to form the terminal group, in the process of searching for the pairing terminal devices based on the distance condition, the terminal devices meeting the distance condition with the target near-field terminal device are sequentially searched from the terminal devices requesting services (except the target near-field terminal device) in the order of searching for the near-field terminal devices first and then searching for the far-field terminal devices.

[0085] The terminal devices in the terminal group divided using the distance condition are close in distance, and therefore, the type of the terminal group obtained based on the distance condition is configured as a single-beam type, that is, the terminal devices in the terminal group use the same beam, which is beneficial to save the beam resources and thus improve the utilization rate of the beam resources.

[0086] It can be understood that, the terminal devices in the terminal group obtained based on the distance condition are not limited to using the same beam, and different beams can also be used, for example, the type of the terminal group obtained based on the distance condition is configured as a double-beam type.

[0087] In the absence of the target near-field terminal device and / or the pairing terminal device, the at least two terminal devices whose channel quality difference satisfies the condition are divided into the same terminal group according to the rule of preferentially dividing terminal devices with larger channel quality difference into a terminal group, which is beneficial to improve the success rate of SIC decoding.

[0088] In the absence of the target near-field terminal device and / or the pairing terminal device, that is, in the case where the terminal groups cannot be further screened out based on the distance condition, in this case, the terminal devices in the un-divided terminal groups are sorted in descending order of channel quality based on the channel quality condition of the terminal devices in the un-divided terminal groups, to obtain another sequence, referred to as a second sequence, for ease of description, it is assumed that the terminal devices in the second sequence are (a, b, c, … d, e, f), where the channel quality of a is the best and the channel quality of f is the worst, and a and f are divided into a terminal group, b and e are divided into a terminal group, and c and d are divided into a terminal group. The channel quality condition includes at least one of the distance from the base station and the channel quality parameter (such as CSI), and the channel quality parameter directly reflects the channel quality of the terminal device, and the distance from the base station indirectly reflects the channel quality of the terminal device. The way of determining the terminal devices whose channel quality difference satisfies the condition through the second sequence is only an example and not as a limitation.

[0089] Because the pairing mode based on channel quality does not rely on the distance condition, the terminal devices in the terminal groups obtained based on channel quality are likely to not meet the distance requirement of using the same beam, and therefore, the terminal groups obtained based on channel quality are configured with multi-beam (such as double-beam) types, that is, the terminal devices in the terminal groups obtained based on channel quality are configured to use different beams, so as to meet the communication requirements of each terminal device in the terminal group.

[0090] In this step, the strong terminal device (also referred to as a strong user) and the weak terminal device (also referred to as a weak user) in the terminal group are also configured. The strong terminal device is a terminal device with higher communication requirements, and the weak terminal device is a terminal device with lower communication requirements than the strong terminal device. In combination with the above-described terminal group division method, the target near-field terminal device is exemplarily configured as a strong terminal device, or the terminal device with higher channel quality is exemplarily configured as a strong terminal device, and correspondingly, the other terminal device in the terminal group is a weak terminal device.

[0091] In summary, the exemplary process of pairing terminal groups includes:

[0092] The near-field terminal devices requesting services are sequentially searched for paired terminal devices in descending order of service rate requirements. For any one near-field terminal device, the process of searching for paired terminal devices is as follows: the near-field terminal device is marked as a strong terminal device, other near-field terminal devices within a preset orientation threshold of the strong terminal device are selected for pairing, if there is no near-field terminal device within the preset orientation threshold, a far-field terminal device is selected for pairing, a terminal group is obtained, and the terminal group is marked as a single-beam type terminal group. The pairing operation is repeated until there is no terminal device that meets the pairing condition.

[0093] The remaining terminal devices are sequentially searched for paired terminal devices in descending order of distance from the base station and / or channel quality parameters. For any one terminal device, the process of searching for paired terminal devices is as follows: the terminal device is marked as a strong terminal device; the terminal device with the worst channel quality is selected for pairing, a terminal group is obtained, the terminal group is marked as a double-beam type terminal group, and the pairing operation is repeated to complete the pairing of all terminal devices.

[0094] According to the classification of near-field terminal devices and far-field terminal devices, a terminal group including near-field terminal devices and not including far-field terminal devices is marked as a near-near terminal group, a terminal group including near-field terminal devices and far-field terminal devices is marked as a near-far terminal group, and a terminal group including far-field terminal devices and not including near-field terminal devices is marked as a far-far terminal group.

[0095] S13, the base station obtains transmission parameters of each terminal device in the terminal group based on attribute information of each terminal device in the terminal group.

[0096] The attribute information includes at least one of transmission rate information, channel state information, and near-far field type. Hereinafter, the attribute information including all the above will be described as an example.

[0097] The transmission rate information indicates the requirement for transmission rate, such as the aforementioned transmission rate requirement. The channel state information (CSI) indicates the quality of the channel. The near-far field type indicates whether the terminal device is a far-field terminal device or a near-field terminal device.

[0098] The transmission parameters include beam parameters, and the beam parameters include a beamforming matrix and a beam emission direction. In the case where each terminal device in the terminal group shares the same beam, the transmission parameters further include a distribution ratio of transmission power.

[0099] The process of obtaining the transmission parameters will be described below for the near-near terminal group, the near-far terminal group, and the far-far terminal group, respectively, in combination with the single-beam type and the double-beam type.

[0100] 1. Transmission parameter obtaining process of the near-near terminal group:

[0101] 1-1, for the single-beam type, i.e. each terminal device in the near-near terminal group shares one beam (i.e. the first beam):

[0102] Based on the transmission rate information and the channel model of the terminal devices in the terminal group, the beamforming matrix of the first beam and the allocation ratio of the transmission power are obtained.

[0103] In some implementations, the channel model of the near-field terminal device is based on the position information of the center element of the antenna array of the base station, the position information of the near-field terminal device, and the channel model of the near-field terminal device is obtained, for example:

[0104] (1),

[0105] wherein, , is the speed of light, is the carrier frequency, represents the position of the center element of the antenna array of the base station, represents the position of the near-field terminal device. λ is the wavelength of the electromagnetic wave corresponding to the carrier frequency, is the position of the nth antenna element (n = 1 … N), and j is the imaginary symbol (replacing i in communication).

[0106] The rate requirement of the strong terminal device in the near-near terminal group is:

[0107] (2),

[0108] In formula (2), is the minimum transmission rate of the strong terminal device in the near-near terminal group, is the beamforming matrix of the strong terminal device in the near-near terminal group, is the channel matrix of the strong terminal device in the near-near terminal group, is the noise power, is the allocation ratio of the transmission power allocated to the strong terminal device in the near-near terminal group. The rate requirement of the weak terminal device in the near-near terminal group is:

[0109]

[0110] (3),

[0111] In formula (3), is the minimum transmission rate of the weak terminal device in the near-near terminal group, ​​​The minimum transmission rate of the weak terminal device in the near-near terminal group because of sharing the first beam The beamforming matrix of the weak terminal device in the near-near terminal group is also , The channel matrix of the weak terminal device in the near-near terminal group is , .

[0112] Solving equation (2) and equation (3) together, we can get and .

[0113] The beam transmission direction of the single-beam type near-near terminal group is to take the position of the first terminal device in the near-near terminal group as the energy focusing point of the first beam, wherein the transmission rate requirement of the first terminal device is higher than that of the second terminal device, or the channel state of the first terminal device is better than that of the second terminal device, or both of the above conditions are met, that is, the first terminal device is the strong terminal device, and the second terminal device is the weak terminal device in the same terminal group. The advantage of taking the position of the strong terminal device as the energy focusing point of the first beam is that the strong terminal device can obtain greater communication gain and more easily meet its service requirements, and at the same time, SIC decoding can be more reliably completed.

[0114] 1-2, for the double-beam type, such as the case where one terminal device in the near-near terminal group uses the first beam and the other terminal device uses the second beam:

[0115] Based on the transmission rate information and channel model of the terminal devices in the terminal group, the beamforming matrix of the first beam and the beamforming matrix of the second beam are obtained.

[0116] The rate requirement of the strong terminal device in the near-near terminal group is:

[0117] (4),

[0118] The rate requirement of the weak terminal device in the near-near terminal group is:

[0119] (5),

[0120] wherein, is the beamforming matrix of the weak terminal device, because different terminal devices use different beams, so different beamforming matrices are used, the meanings of other parameters in equation (4) and equation (5) are as before, solving equation (4) and equation (5) together, we can get and .

[0121] The beam transmission direction of the near-far terminal group of the double-beam type is that the position of one near-field terminal device is the energy focusing point of the first beam, and the position of another near-field terminal device is the energy focusing point of the second beam.

[0122] 2. Transmission parameter acquisition process of the near-far terminal group:

[0123] 2-1. For the single-beam type, that is, the case where each terminal device in the near-far terminal group shares one beam (i.e., the first beam):

[0124] The rate requirement of the strong terminal device in the near-far terminal group is as formula (2).

[0125] If the weak terminal device in the near-far terminal group is a near-field terminal, the rate requirement of the weak terminal device is as formula (3), and if the weak terminal device in the near-far terminal group is a far-field terminal, the rate requirement of the weak terminal device is as formula (6):

[0126] (6),

[0127] In formula (6), is the channel matrix of the weak terminal device, and an exemplary

[0128] (7),

[0129] In formula (7), , represents the position of the far-field terminal device, represents the position of the first array element of the antenna array of the base station, and λ is the wavelength of the electromagnetic wave corresponding to the carrier frequency, is the azimuth angle of the far-field terminal device, and d is the antenna element spacing.

[0130] If the weak terminal device in the near-far terminal group is a near-field terminal device, formula (2) and formula (3) can be solved together to obtain and , or if the weak terminal device in the near-far terminal group is a far-field terminal device, formula (2) and formula (6) can be solved together to obtain and .

[0131] The beam transmission direction of the near-far terminal group of the single-beam type can be referred to the beam transmission direction of the near-far terminal group of the single-beam type, which will not be repeated here.

[0132] 2-2. For the double-beam type, such as the case where one terminal device in the near-far terminal group uses the first beam and another terminal device uses the second beam:

[0133] The rate requirement of the strong terminal device in the near-far terminal group is as formula (4).

[0134] If the weak terminal device in the near-far terminal group is a near-field terminal device, the rate requirement of the weak terminal device is as formula (5), in this case, formula (4) and formula (5) are solved simultaneously, and and .

[0135] If the weak terminal device in the near-far terminal group is a far-field terminal device, the rate requirement of the weak terminal device is as formula (8):

[0136] (8),

[0137] Formula (4) and formula (8) are solved simultaneously, and and .

[0138] The beam transmission direction of the near-far terminal group of the double-beam type is: taking the position of the near-field terminal device as the energy focusing point of the first beam, and taking the direction of aligning the far-field terminal device as the direction of the second beam.

[0139] 3, the transmission parameter acquisition process of the far-far terminal group:

[0140] 3-1, for the single-beam type, that is, each terminal device in the far-far terminal group shares a beam (that is, the first beam):

[0141] The rate requirement of the strong terminal device is: (9),

[0142] In formula (9), is the beamforming matrix.

[0143] The rate requirement of the weak terminal device is: (10),

[0144] Formula (9) and formula (10) are solved simultaneously, and and .

[0145] The beam transmission direction of the far-far terminal group of the single-beam type is: taking the central direction of each terminal device in the terminal group as the direction of the first beam, and the central direction is determined based on the azimuth angle of each terminal device. Exemplarily, the direction represented by the average of the azimuth angles of each terminal device is taken as the central direction of each terminal device.

[0146] 3-2, for the dual-beam type, such as a terminal device in the far-far terminal group uses the first beam, and another terminal device uses the second beam:

[0147] The rate requirement of the strong terminal device is: (11),

[0148] The rate requirement of the weak terminal device is: (12),

[0149] Solving formula (11) and formula (12) simultaneously can obtain the beamforming matrix of the first beam and the beamforming matrix of the second beam .

[0150] The beam transmission direction of the far-far terminal group of the dual-beam type is: the direction of the first beam is aligned with the direction of the first far-field terminal device, and the direction of the second beam is aligned with the direction of the second far-field terminal device.

[0151] S14, the base station sends a service request response, and correspondingly, the terminal device requesting the service receives the service request response.

[0152] Exemplarily, the service request response includes wireless resource information and decoding indication information. The wireless resource information is used to indicate the wireless resource used for transmitting the service.

[0153] The decoding indication information indicates the decoding mode used by the terminal device, and the decoding mode includes SIC decoding or non-SIC decoding. An example of non-SIC decoding is ordinary decoding.

[0154] It can be understood that the base station indicates different decoding modes for different terminal devices: the base station indicates SIC decoding for the strong terminal device in the terminal group, and indicates non-SIC decoding for the weak terminal device in the terminal group.

[0155] S15, the base station transmits a superposition signal to each terminal device in the terminal group based on the transmission parameter, and correspondingly, the terminal device requesting the service receives the superposition signal.

[0156] The superposition signal is a signal obtained by superimposing the signals sent to each terminal device in the terminal group based on the transmission parameter.

[0157] For the near-near terminal group and the far-near terminal group:

[0158] If the near-near terminal group is a single-beam type, the position of the strong terminal device is taken as the energy focusing point of the beam, and the superimposed signals of each terminal device in the terminal group are transmitted based on the near-field beam in the same time-frequency resource. Taking a terminal group including two terminal devices as an example, the transmitted signal is:

[0159] (13);

[0160] for the data stream (signal) of the strong terminal device, for the data stream of the weak terminal device.

[0161] If the near-near terminal group is a double-beam type, the superimposed signals of each terminal device in the terminal group are transmitted based on the near-field beam pair or the far-near field beam pair on the same time-frequency resource:

[0162] (14).

[0163] For the far-far terminal group:

[0164] If the far-far terminal group is a single-beam type, the superimposed signals of each terminal device in the terminal group are transmitted in the direction of the terminal group center as the beam direction on the same time-frequency resource:

[0165] (15).

[0166] If the far-far terminal group is a double-beam type, the superimposed signals of each terminal device in the terminal group are transmitted based on the beam aligned to the two terminal devices on the same time-frequency resource:

[0167] (16).

[0168] S16, the terminal device decodes the received signal.

[0169] It can be understood that if the decoding indication information received by the terminal device indicates SIC decoding, the terminal device uses SIC decoding mode to decode the received signal, and if the decoding indication information received by the terminal device indicates non-SIC decoding, the terminal device uses ordinary decoding mode to decode the received signal.

[0170] Figure 3 The flowchart shown has the following advantages:

[0171] The base station first divides the terminal group, and then obtains the transmission parameters of each terminal based on the transmission rate information and the channel state of each terminal device in the terminal group, and transmits the superimposed signal based on the transmission parameters. The signal strength of the beam serving the near-field terminal device of the traditional NOMA may be superimposed at the far field. Based on this characteristic, the near-field beam is pre-configured for the near-field terminal device. Without changing the design of the near-field beam, the near-field beam is additionally used to serve the far-field terminal device. That is, the traditional NOMA first selects the near-field beam, and then finds the far-field terminal device that can be served based on the near-field beam. Therefore, the method of the embodiment first divides the terminal group and then determines the beam transmission parameters of the terminal group, which can obtain transmission parameters more suitable for the characteristics (transmission rate information and channel state) of the terminal group. Therefore, the resource multiplexing is more suitable for the current scene, which is beneficial to improve the flexibility and reliability of the resource multiplexing, thereby improving the performance of the resource multiplexing.

[0172] In combination with the base station configuring the SIC decoding mode for the strong terminal device and the non-SIC decoding mode for the weak terminal device, the success rate of the SIC decoding is improved, thereby further improving the performance of the resource multiplexing.

[0173] Based on the priority selection of the near-field terminal device to form the terminal group, the terminal devices with large differences in channel quality are preferentially divided into one terminal group, which is beneficial to further improve the possibility of decoding success, significantly improve the multiplexing gain and the overall system capacity in the mixed field scene, and improve the spectrum efficiency, thereby further improving the performance of the resource multiplexing.

[0174] In addition, based on the characteristics of the near-field channel model, the mixed field terminal device pairing method is jointly designed with the signal superposition and the SIC decoding order, and the near-field beam resources are fully utilized, thereby improving the spectrum efficiency and the beam resource utilization efficiency of the multi-user in the mixed field.

[0175] In summary, the method provided by the embodiment can be highly adapted to the environment and scene of the terminal device requesting the service, and therefore the performance of the resource multiplexing can be significantly improved.

[0176] Figure 4 The process for the base station to determine the near-field type of the terminal device includes the following steps:

[0177] S21, the terminal device sends a measurement report, and correspondingly, the base station receives the measurement report.

[0178] The measurement report includes the orientation information of the terminal device.

[0179] The orientation information includes the position information and the azimuth angle, wherein the position information can be the position information of the terminal device obtained based on the positioning module, or the relative distance between the terminal device and the base station calculated based on the position information of the terminal device.

[0180] The azimuth angle is an azimuth angle of the terminal device itself.

[0181] For example, the terminal device is triggered to send the measurement report by signaling received, can also be triggered to send the measurement report by an event, and can also periodically send the measurement report. For details, refer to the existing standard, which is not described herein.

[0182] For example, the measurement report can further include channel state information. For details, refer to the above embodiment.

[0183] S22, the base station determines the near-far field type of the terminal device based on the azimuth information of the terminal device.

[0184] The near-far field type indicates a near-field terminal device or a far-field terminal device.

[0185] In some implementations, for any one terminal device, the terminal device is divided into a near-field terminal or a far-field terminal based on the size relationship between the distance value of the terminal device and the first threshold value.

[0186] The distance value of the terminal device is the distance between the terminal device and the base station. It can be understood that the distance can be transmitted to the base station by the terminal device through the measurement report, or the terminal device transmits the position information of the terminal device to the base station through the measurement report, and in this case, the base station calculates the distance between the terminal device and the base station based on the position information of the terminal device.

[0187] The first threshold value is determined based on the aperture of the antenna of the base station and the azimuth angle of the terminal device.

[0188] For example, the formula for determining the near-far field type of the terminal device is as follows:

[0189] (17),

[0190] In formula (17), is the aperture of the antenna of the base station, is the azimuth angle of the terminal device, is the distance between the terminal device and the base station.

[0191] The method for determining the near-far field type of the terminal device provided in the embodiment has the advantages of high accuracy, and the required information can be obtained from the terminal device through signaling, which is easy to implement and has high compatibility with the existing standard.

[0192] It should be understood that Figures 1 to 4The flowcharts or scenario charts shown are only for ease of understanding and are not intended to limit the embodiments of the present application to the examples shown in the charts. In fact, based on the examples in the foregoing detailed description, those skilled in the art can make equivalent changes to obtain more implementation manners. Figures 1 to 4

[0193] The communication method provided by the embodiments of the present application is described in detail above in combination with Figures 1 to 4 The device embodiments of the present application will be described in detail below in combination with Figures 5 to 6 It should be understood that the communication device of the embodiments of the present application can perform the various communication methods of the foregoing embodiments of the present application, i.e., the specific working processes of the following various products can refer to the corresponding processes in the foregoing method embodiments.

[0194] In the embodiments above, the terminal device can perform some or all of the steps in the embodiments; the network device can perform some or all of the steps in the embodiments. These steps or operations are only examples, and the embodiments of the present application can also perform other operations or variations of the various operations. In addition, the various steps can be performed in different orders according to the various embodiments, and it is possible that not all operations in the embodiments of the present application are performed. Moreover, the magnitude of the serial number of the steps does not mean the order of execution, and the execution order of the various processes should be determined according to their functions and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0195] Figure 5 is a schematic block diagram of the communication device provided by the embodiments of the present application. As shown in Figure 5 The communication device 500 can include a processing module 510 and a communication module 520. The communication module 520 can implement a corresponding communication function, which can be an internal communication function of the communication device 500 or a communication function of the communication device 500 and other devices. Optionally, the communication module 520 can also be referred to as a communication interface or a transceiver module. The processing module 510 can implement a corresponding processing function.

[0196] Optionally, the communication device 500 further includes a storage module, which can be used to store instructions and / or data; the processing module 510 can read the instructions and / or data in the storage module, so that the communication device 500 implements the foregoing method embodiments.

[0197] In a possible design, the communication device 500 can correspond to the network device in the foregoing method embodiments, or be a component (such as a circuit, a chip or a chip system, etc.) configured in the network device. The communication device 500 can be used to perform the steps or processes performed by the network device in any of the foregoing method embodiments.

[0198] ​For example, the processing module 510 is used to divide the terminal devices requesting services into terminal groups; based on the attribute information of each terminal device in the terminal group, it obtains the transmission parameters of each terminal device in the terminal group, wherein the attribute information includes at least one of the following: transmission rate information, channel state information, and near / far field type.

[0199] The communication module 520 is used to send superimposed signals to each of the terminal devices. The superimposed signals are obtained by superimposing the signals sent to each of the terminal devices in the terminal group based on the transmission parameters.

[0200] The above are merely examples; for detailed steps or procedures, please refer to the descriptions in the foregoing embodiments.

[0201] Figure 6 This is another schematic block diagram of the communication device 600 provided in the embodiments of this application. The communication device 600 may be a chip, chip system, or processor, etc., in a terminal device or network device that implements the above-described methods. The communication device 600 can be used to implement the methods described in the above-described method embodiments; for details, please refer to the descriptions in the above-described method embodiments.

[0202] like Figure 6 As shown, the communication device 600 may include one or more processors 610, which may also be referred to as processing units or processing modules, and can implement certain control functions. The processor 610 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, while the central processing unit can be used to control the communication device 600 (e.g., a base station, baseband chip, user, user chip), execute software programs, and process data from the software programs.

[0203] In an alternative design, the processor 610 may also store instructions and / or data that can be executed by the processor 610 to cause the communication device 600 to perform the methods described in the above method embodiments.

[0204] In another alternative design, the communication device 600 may include a communication interface 620 for implementing receiving and transmitting functions. For example, the communication interface 620 may be a transceiver circuit, interface, interface circuit, or transceiver. The transceiver circuit, interface, interface circuit, or transceiver for implementing receiving and transmitting functions may be separate or integrated. The aforementioned transceiver circuit, interface, interface circuit, or transceiver may be used for reading and writing code / data, or it may be used for transmitting or relaying signals.

[0205] Optionally, the communication apparatus 600 can include one or more memories 630 that can store instructions that can be executed by the processor 610 to cause the communication apparatus 600 to perform the methods described in the above method embodiments. Optionally, the memory 630 can also store data. Optionally, the processor 610 can also store instructions and / or data. The processor 610 and the memory 630 can be separately arranged, or can be integrated together.

[0206] It should be understood that, in a possible design, each step in the method embodiments provided in the present application can be completed by integrated logic circuits of hardware in the processor or instructions in the form of software. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as being completed by a hardware processor, or completed by a combination of hardware and software modules in the processor. The software modules can be located in random access memories, flash memories, read-only memories, programmable read-only memories, or electrically erasable programmable memories, registers, or other mature storage media in the art. The storage medium is located in the memory, and the processor reads information in the memory and combines the hardware to complete the steps of the above method. To avoid repetition, they will not be described in detail here.

[0207] In one implementation, the communication apparatus 600 can correspond to the terminal device in the above method embodiments, and can be used to execute each step and / or process executed by the terminal device in the above method embodiments. The processor 610 can be used to execute the instructions stored in the memory 630, and when the processor 610 executes the instructions stored in the memory, the processor 610 is used to execute each step and / or process of the above method embodiments corresponding to the terminal device.

[0208] In another implementation, the communication apparatus 600 can correspond to the network device in the above method embodiments, and can be used to execute each step and / or process executed by the network device in the above method embodiments. The processor 610 can be used to execute the instructions stored in the memory 630, and when the processor 610 executes the instructions stored in the memory, the processor 610 is used to execute each step and / or process of the above method embodiments corresponding to the network device.

[0209] It should be understood that the above-mentioned processing device can be one or more chips. For example, the processing device can be a field programmable gate array (FPGA), can be an application specific integrated circuit (ASIC), can also be a system on chip (SoC), can also be a central processor unit (CPU), can also be a network processor (NP), can also be a digital signal processor (DSP), can also be a micro controller unit (MCU), can also be a programmable logic device (PLD) or other integrated chip.

[0210] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM) and direct rambus RAM (DR RAM). It should be noted that the memory of the system and method described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0211] According to the method provided in the embodiments of the present application, the present application further provides a chip system, which comprises one or more processors, and is configured to invoke and run instructions stored in a memory, so that the method provided in the embodiments of the present application is executed. The chip system can be composed of a chip, or can comprise a chip and other discrete devices.

[0212] The chip system can comprise an input circuit or interface configured to send information or data, and an output circuit or interface configured to receive information or data.

[0213] According to the method provided in the embodiments of the present application, the present application further provides a communication system, which comprises the network device and the terminal device.

[0214] According to the method provided in the embodiments of the present application, the present application further provides a computer program product, which comprises computer program codes, and when the computer program codes are executed on a computer, the computer is caused to execute each step or flow of the network device or the terminal device.

[0215] According to the method provided in the embodiments of the present application, the present application further provides a computer readable storage medium, which stores program codes, and when the program codes are executed on a computer, the computer is caused to execute each step or flow of the network device or the terminal device.

[0216] The computer readable storage medium can be the volatile memory or the non-volatile memory, or can comprise the volatile memory and the non-volatile memory.

[0217] In the embodiments of the present application, each term and English abbreviation is an exemplary example given for convenience of description, and should not constitute any limitation on the present application. The present application does not exclude the possibility of defining other terms capable of achieving the same or similar functions in the existing or future protocols.

[0218] In the above embodiments, all or part of the embodiments can be realized by software, hardware, firmware or any combination thereof. When realized by software, all or part of the embodiments can be realized in the form of a computer program product. The computer program product comprises one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.

[0219] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the division of the above-described device embodiment is only a logical function division, and there can be another division manner for actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between different units, or the among different units, can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0220] It should be understood that, in various embodiments of the present application, the sequence of the processes does not mean the execution sequence, and the execution sequence of the processes should be determined according to the functions and the inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0221] In summary, the above description is only the preferred embodiment of the technical scheme of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hybrid field based communication method, characterized by, The method comprises the steps of: dividing terminal devices requesting services into a terminal group by a network device; obtaining transmission parameters of each terminal device in the terminal group based on attribute information of each terminal device in the terminal group, wherein the attribute information comprises at least one of transmission rate information, channel state information and near-far field type; sending a superimposed signal to each terminal device in the terminal group by the network device, wherein the superimposed signal is obtained by superimposing signals sent to each terminal device in the terminal group based on the transmission parameters.

2. The method of claim 1, wherein, The step of dividing terminal devices requesting services into a terminal group comprises the steps of: dividing terminal devices requesting services into a terminal group based on a grouping rule, wherein the grouping rule comprises at least one of preferentially selecting near-field terminal devices to form the terminal group and preferentially dividing terminal devices with different channel qualities into one terminal group.

3. The method of claim 2, wherein, The step of dividing terminal devices requesting services into a terminal group based on a grouping rule comprises the steps of: finding terminal devices satisfying a distance condition with a target near-field terminal device as paired terminal devices; dividing the target near-field terminal device and the paired terminal devices into the same terminal group.

4. The method of claim 3, wherein, The step of finding terminal devices satisfying a distance condition with a target near-field terminal device comprises the steps of: sequentially finding terminal devices satisfying the distance condition with the target near-field terminal device based on an order of first finding near-field terminal devices and then finding far-field terminal devices.

5. The method of claim 3, wherein, The target near-field terminal device is obtained by screening based on transmission rate information.

6. The method according to any one of claims 3-5, characterized in that, After the step of dividing the target near-field terminal device and the paired terminal devices into the same terminal group, the method further comprises the step of: configuring terminal devices in the terminal group to use the same beam.

7. The method according to any one of claims 3-5, characterized in that, The step of dividing terminal devices requesting services into a terminal group based on a grouping rule further comprises the step of: in the absence of the target near-field terminal device and / or the paired terminal devices, dividing at least two terminal devices with different channel qualities into the same terminal group.

8. The method of claim 7, wherein, After the step of dividing at least two terminal devices with different channel qualities into the same terminal group, the method further comprises the step of: configuring each terminal device in the terminal group to use different beams.

9. The method according to any one of claims 1 to 5, characterized in that, The step of obtaining transmission parameters of each terminal device in the terminal group based on attribute information of each terminal device in the terminal group comprises the steps of: obtaining a beamforming matrix of a first beam and a distribution ratio of transmission power based on transmission rate information and a channel model of terminal devices in the terminal group, wherein each terminal device in the terminal group uses the same beam.

10. The method of claim 9, wherein, The step of obtaining transmission parameters of each terminal device in the terminal group based on attribute information of each terminal device in the terminal group further comprises the steps of: taking a position of a first terminal device in the terminal group as an energy focus point of the first beam, wherein the first terminal device is a near-field terminal device, a rate requirement of the first terminal device is higher than a rate requirement of a second terminal device, and / or a channel state of the first terminal device is better than a channel state of the second terminal device.

11. The method of claim 9, wherein, The transmission parameters of the terminal devices in the terminal group are obtained based on attribute information of each terminal device in the terminal group, and the method further includes: A central direction of each terminal device in the terminal group is taken as a direction of the first beam, each terminal device in the terminal group is a far-field terminal device, and the central direction is determined based on an azimuth angle of each terminal device.

12. The method according to any one of claims 1 to 5, characterized in that, The transmission parameters of the terminal devices in the terminal group are obtained based on attribute information of each terminal device in the terminal group, and the method further includes: Beamforming matrices of the first beam and the second beam are obtained based on transmission rate information and a channel model of the terminal devices in the terminal group, each terminal device in the terminal group uses different beams, and the different beams include the first beam and the second beam.

13. The method of claim 12, wherein, The transmission parameters of the terminal devices in the terminal group are obtained based on attribute information of each terminal device in the terminal group, and the method further includes: A position of a near-field terminal device is taken as an energy focus point of the first beam, and a direction of aligning to a far-field terminal device is taken as a direction of the second beam.

14. The method of claim 12, wherein, The transmission parameters of the terminal devices in the terminal group are obtained based on attribute information of each terminal device in the terminal group, and the method further includes: A direction of aligning to a first far-field terminal device is taken as a direction of the first beam, and a direction of aligning to a second far-field terminal device is taken as a direction of the second beam, each terminal device in the terminal group is a far-field terminal device.

15. The method according to any one of claims 1-5, characterized in that, Before the terminal devices requesting services are divided into terminal groups, the method further includes: The network device determines a far-field or near-field type of a terminal device based on azimuth information of the terminal device.

16. The method of claim 15, wherein, The method further includes: The far-field or near-field type of the terminal device is determined based on the azimuth information of the terminal device, and the method further includes: The terminal device is divided into a near-field terminal device or a far-field terminal device based on a size relationship between a distance value of the terminal device and a first threshold value, the distance value of the terminal device is a distance between the terminal device and the network device, and the first threshold value is determined based on an aperture of an antenna of the network device and an azimuth angle of the terminal device.

17. The method of any one of claims 1-5, wherein, Before the superimposed signals are sent to the terminal devices, the method further includes: The network device indicates a successive interference cancellation (SIC) decoding to a strong terminal device in the terminal group and indicates a non-SIC decoding to a weak terminal device in the terminal group.

18. A communications device, characterized by The apparatus includes at least one processor coupled with a memory, the memory having stored therein programs or instructions, and the processor executes the programs or instructions to cause the apparatus to perform the method of any one of claims 1 to 17.

19. A computer readable storage medium having stored thereon a computer program or instructions, characterized in that, The computer programs or instructions, when executed, cause a computer to perform the method of any one of claims 1 to 17.

20. A communication system, characterized by The communication apparatus includes the apparatus of claim 18.

21. A chip system, characterized by The chip system includes one or more processors configured to invoke and run instructions stored in a memory, so that the method of any one of claims 1 to 17 is executed.

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