An uplink spectrum efficient multiple access service coexistence method

Abstract

The application discloses an uplink high spectrum efficiency multiple access service coexistence method, and belongs to the technical field of wireless communication. The method comprises the following steps: estimating the angle information between each user and a wireless access point and setting a threshold value by using the position information of enhanced mobile broadband users and massive machine type communication users, and then screening out the enhanced mobile broadband users meeting the threshold value and having the optimal channel quality to perform communication service; calculating the maximum interference that can be tolerated when the enhanced mobile broadband users served in a current time slot meet the quality of service requirement, selecting the massive machine type communication users sharing the same time-frequency resource with the enhanced mobile broadband users served in the current time slot in combination with the channel difference of the massive machine type communication users, and realizing the coexistence of uplink enhanced mobile broadband services and massive machine type communication services. The method can realize the coexistence of uplink enhanced mobile broadband services and massive machine type communication services and improve the spectrum efficiency of a communication system.

Description

Technical Field

[0001] This invention relates to a method for coexistence of uplink high spectral efficiency multiple access services, belonging to the field of wireless communication technology. Background Technology

[0002] In recent years, with the development of information and communication technology, the deep integration of emerging information technology and industrial economy has gradually changed industrial production and business models. The "Industrial Internet" has become one of the key paths for the iterative transformation of traditional industrial production.

[0003] Fifth-generation mobile networks (5G), with its characteristics of low latency, wide connectivity, and high bandwidth, are considered one of the key technologies driving the vigorous development of the Industrial Internet. 5G wireless communication technology supports three different service types: enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). Among them, eMBB offers ultra-high data transmission rates, meeting the needs of interactive scenarios in the Industrial Internet, such as live streaming and augmented reality; mMTC supports the access of a large number of devices, meeting the needs of large-scale data acquisition devices in the Industrial Internet, and is often used for large-scale real-time data acquisition.

[0004] In scenarios where eMBB and mMTC services coexist, eMBB services consume more frequency resources due to their high-speed requirements, while mMTC services are characterized by massive access and are prone to collisions within limited frequency resources. Furthermore, mMTC users do not have high data rate requirements and their data is bursty. Therefore, allocating separate time-frequency resources to mMTC users would result in a waste of resources.

[0005] Therefore, it is necessary to study the reuse of eMBB services and mMTC services in the same time and frequency resources, and to ensure that the service quality of eMBB users meets the requirements while also ensuring that multiple devices of mMTC services can participate in the industrial internet. Summary of the Invention

[0006] The purpose of this invention is to provide a method for coexistence of uplink high spectral efficiency multiple access services, which can realize the coexistence of uplink enhanced mobile broadband services and massive machine-type communication services, thereby improving the spectral efficiency of the communication system.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A method for coexistence of uplink high-spectrum-efficiency multiple access services includes: The location information of enhanced mobile broadband users and massive machine-type communication users is obtained, and the angle information between each user and the wireless access point is estimated based on the location information. Based on the angle information, a threshold value is set to filter out enhanced mobile broadband users who meet the threshold value and have the best channel quality for communication services. Obtain the communication information of the enhanced mobile broadband users served in the current time slot and feed it back to the wireless access point for calculation, and obtain the maximum interference that the enhanced mobile broadband users served in the current time slot can tolerate when meeting the quality of service requirements; Based on the maximum tolerable interference for enhanced mobile broadband users served in the current time slot to meet service quality requirements and the channel differences of massive machine-type communication users, several massive machine-type communication users are selected to share the same time-frequency resources with the enhanced mobile broadband users served in the current time slot, thereby enabling the coexistence of uplink enhanced mobile broadband services and massive machine-type communication services.

[0008] Furthermore, obtaining location information for enhanced mobile broadband users and massive machine-type communication users, and estimating the angle information between each user and the wireless access point based on the location information, includes: A coordinate system is established for the entire communication system, and wireless positioning technology is used to obtain the location information of enhanced mobile broadband users and large-scale machine communication users through wireless access points; Based on the location information, estimate the angle information between each user and the wireless access point; The angle information refers to the angle between each user and the uniform linear array configured for the wireless access point.

[0009] Furthermore, setting a threshold value based on the angle information, and filtering out enhanced mobile broadband users who meet the threshold value and have the best channel quality for communication services includes: Based on the angle information, simulated beamforming design is performed through a wireless access point to obtain the beamforming weight vector; Based on the beamforming weight vector, a threshold value is set through the wireless access point to filter enhanced mobile broadband users, and enhanced mobile broadband users that meet the threshold value are selected to form a user subset. Enhanced mobile broadband users with the best channel quality are selected from the user subset to provide communication services.

[0010] Furthermore, the expression for the beamforming weight vector is shown in formula (1): (1); In formula (1), For the first One enhanced mobile broadband user, For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the number of elements in a multi-antenna array, For the first An angle information for an enhanced mobile broadband user.

[0011] Furthermore, the data rate of the enhanced mobile broadband user during standalone transmission satisfies the formula shown in formula (2): (2); In formula (2), For the first One enhanced mobile broadband user, A uniform linear array configured for wireless access points Beam gain for enhanced mobile broadband users, For the first Path loss for an enhanced mobile broadband user , For wavelength, For the first The distance from an enhanced mobile broadband user to a wireless access point. For the first Transmit power for each enhanced mobile broadband user, For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the first Channel vectors for each enhanced mobile broadband user, , For the first Small-scale fading of the channel for an enhanced mobile broadband user. For the first Information from the perspective of an enhanced mobile broadband user. The variance of additive white Gaussian noise, Target data rate for enhanced mobile broadband users; Based on the formula that the data rate of the enhanced mobile broadband user during individual transmission satisfies, the expression for the threshold value is obtained, and the expression for the threshold value is shown in formula (3): (3); In formula (3), the definition is... This is the threshold value; Based on the beamforming weight vector and using the threshold value, enhanced mobile broadband users are screened through the wireless access point to select those who meet the requirements. Enhanced mobile broadband users constitute a subset of users.

[0012] Furthermore, the channel of the enhanced mobile broadband user with the best channel quality satisfies the formula shown in formula (4): (4); In formula (4), For a subset of users, For the first Enhanced mobile broadband users are those selected by setting threshold values ​​at the wireless access point. For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the first Channel vectors for each enhanced mobile broadband user, For the first An enhanced mobile broadband user, i.e., an enhanced mobile broadband user with the best channel quality, For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the first Channel vectors for each enhanced mobile broadband user.

[0013] Furthermore, the expression for the quality of service requirements of the enhanced mobile broadband users served in the current time slot under the condition of interference from large-scale machine-type communication users is shown in formula (5): (5); In formula (5), For the first An enhanced mobile broadband user, that is, an enhanced mobile broadband user currently served in the current time slot. A uniform linear array configured for wireless access points Beam gain for enhanced mobile broadband users, For the first Path loss for an enhanced mobile broadband user For the first Transmit power for each enhanced mobile broadband user, For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the first Channel vectors for each enhanced mobile broadband user, The variance of additive white Gaussian noise, For the target data rate of enhanced mobile broadband users, For the total interference of large-scale machine-type communication users, For the first The quality of service requirements of enhanced mobile broadband users in the presence of interference from large-scale machine-type communication users; Based on the expression for the quality of service requirements of the enhanced mobile broadband users served in the current time slot under the condition of interference from large-scale machine-type communication users, the maximum interference that the enhanced mobile broadband users served in the current time slot can tolerate when meeting the quality of service requirements is obtained. The expression for the maximum interference that the enhanced mobile broadband users served in the current time slot can tolerate when meeting the quality of service requirements is shown in formula (6): (6); In formula (6), The maximum tolerable interference when meeting the quality of service requirements of the enhanced mobile broadband users served in the current time slot.

[0014] Furthermore, the communication information of the enhanced mobile broadband user served in the current time slot includes the path loss, transmit power, channel vector, target data rate, and beamforming weight vector corresponding to the enhanced mobile broadband user served in the current time slot.

[0015] Furthermore, based on the maximum tolerable interference for the enhanced mobile broadband users served in the current time slot to meet the quality of service requirements and the channel differences of large-scale machine-type communication users, several large-scale machine-type communication users are selected to share the same time-frequency resources with the enhanced mobile broadband users served in the current time slot, thereby achieving the coexistence of uplink enhanced mobile broadband services and large-scale machine-type communication services, including: Based on the maximum tolerable interference for enhanced mobile broadband users served in the current time slot to meet service quality requirements and the channel differences of large-scale machine-type communication users, several activated large-scale machine-type communication users are selected to share the same time-frequency resources with the enhanced mobile broadband users served in the current time slot. By utilizing non-orthogonal multiple access technology and serial interference cancellation technology, the superimposed signal consisting of signals from enhanced mobile broadband users and massive machine-type communication users received by the wireless access point is decoded, thereby enabling the coexistence of uplink enhanced mobile broadband services and massive machine-type communication services. The formula satisfied by the selected large-scale machine-type communication users is shown in formula (7): (7); In formula (7), For the first An enhanced mobile broadband user, that is, an enhanced mobile broadband user currently served in the current time slot. The selected time slot is the first A large number of machine-type communication users The selected time slot is the first A large number of machine-type communication users The total number of large-scale machine-type communication users selected in the current time slot. For the first The beamforming weight vector corresponding to each enhanced mobile broadband user, that is, the beamforming weight vector corresponding to the enhanced mobile broadband user served in the current time slot. The uniform linear array configured for the wireless access point is selected for the current time slot. Beam gain for large-scale machine-type communication users The selected time slot is the first Path loss for a large number of machine-type communication users The selected time slot is the first Transmit power of a large number of machine-type communication users The selected time slot is the first Channel vectors for a large number of machine-type communication users The uniform linear array configured for the wireless access point is selected for the current time slot. Beam gain for large-scale machine-type communication users The selected time slot is the first Path loss for a large number of machine-type communication users The selected time slot is the first Transmit power of a large number of machine-type communication users The selected time slot is the first Channel vectors for a large number of machine-type communication users The maximum tolerable interference for enhancing mobile broadband users served in the current time slot to meet their quality of service requirements. The channel difference threshold for large-scale machine-type communication users.

[0016] Furthermore, by utilizing non-orthogonal multiple access technology and serial interference cancellation technology, the superimposed signal received by the wireless access point, consisting of signals from enhanced mobile broadband users and massive machine-type communication users, is decoded to achieve coexistence of uplink enhanced mobile broadband services and massive machine-type communication services, including: By using non-orthogonal multiple access technology, the signals of large-scale machine-type communication users are treated as interference signals, and the signals of enhanced mobile broadband users are decoded. By utilizing serial interference cancellation technology, the signals of large-scale machine-type communication users are sequentially decoded according to the channel gain order of the large-scale machine-type communication users, and the decoded signals of large-scale machine-type communication users are subtracted from the superimposed signal until all signals of large-scale machine-type communication users have been decoded, thereby realizing the coexistence of uplink enhanced mobile broadband services and large-scale machine-type communication services. The channel gain order for the large-scale machine-type communication users is as follows: , , ... The 1st, 2nd, ..., selected timeslots in the current time slot Channel gain for large-scale machine-type communication users.

[0017] Compared with the prior art, the beneficial effects of the present invention are: The uplink high-spectral-efficiency multiple access (HPE) service coexistence method provided by this invention estimates the angle information between each user and the wireless access point using the location information of enhanced mobile broadband (EMB) users and massive machine-type communication (MMC) users, and sets a threshold value. This allows for the selection of EMB users that meet the threshold value and have the best channel quality for communication service. Furthermore, it calculates the maximum tolerable interference for the EMB users served in the current time slot while meeting service quality requirements. Considering the channel differences of MMC users, it selects MMC users to share the same time-frequency resources with the EMB users served in the current time slot, thus achieving uplink high-spectral-efficiency multiple access service coexistence. Enhanced mobile broadband (EMB) services and massive machine-type communication (MMC) services can coexist. Wireless access points utilize angle information to perform simulated beamforming design for EMB users, effectively avoiding estimation and quantization errors caused by obtaining accurate channel information, thus reducing signaling overhead. By employing non-orthogonal multiple access (NOAQ) technology and serial interference cancellation technology, superimposed signals are decoded, ensuring that the quality of service for EMB users meets requirements while providing communication services to multiple MMC users. This achieves coexistence of uplink EMB services and MMC services, improving the spectrum efficiency of the communication system. Attached Figure Description

[0018] Figure 1 This is a flowchart of the uplink high-spectral-efficiency multiple access service coexistence method provided in an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating a scenario where enhanced mobile broadband services and massive machine-type communication services coexist, as provided in an embodiment of the present invention. Detailed Implementation

[0019] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0020] The embodiments of this patent are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent. Unless otherwise specified, the embodiments of this application and the technical features in the embodiments can be combined with each other. Example

[0021] Figure 1 This is a flowchart of an uplink high-spectrum-efficiency multiple access service coexistence method provided in Embodiment 1 of the present invention. This flowchart only shows the logical order of the method in this embodiment. Under the premise of no conflict, in other possible embodiments of the present invention, different methods may be used. Figure 1 Complete the steps shown or described in the order indicated.

[0022] See Figure 1 The method in this embodiment specifically includes the following steps: Step 1: Obtain the location information of enhanced mobile broadband users and massive machine-type communication users, and estimate the angle information between each user and the wireless access point based on the location information; Obtaining location information for enhanced mobile broadband users and massive machine-type communication users, and estimating the angle information between each user and the wireless access point based on the location information, includes the following steps: Step ①: Establish a coordinate system for the entire communication system and use wireless positioning technology to obtain the location information of enhanced mobile broadband users and large-scale machine communication users through wireless access points; Step 2: Estimate the angle information between each user and the wireless access point based on the location information.

[0023] In this embodiment, the wireless access point is configured with a uniform linear array, and the angle information is the angle between each user and the uniform linear array configured with the wireless access point.

[0024] Step 2: Set a threshold value based on the angle information, and filter out enhanced mobile broadband users who meet the threshold value and have the best channel quality to provide communication services; Setting a threshold value based on angle information and filtering out enhanced mobile broadband users who meet the threshold value and have the best channel quality to provide communication services includes the following steps: Step A: Based on the angle information, simulate beamforming design is performed through the wireless access point to obtain the beamforming weight vector; The expression for the beamforming weight vector is shown in formula (1): (1); In formula (1), For the first One enhanced mobile broadband user, For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the number of elements in a multi-antenna array, For the first An angle information for an enhanced mobile broadband user.

[0025] Step B: Based on the beamforming weight vector, set a threshold value through the wireless access point to filter enhanced mobile broadband users and obtain enhanced mobile broadband users that meet the threshold value to form a user subset; The data rate of an enhanced mobile broadband user during standalone transmission is satisfied by the formula shown in formula (2): (2); In formula (2), For the first One enhanced mobile broadband user, A uniform linear array configured for wireless access points Beam gain for enhanced mobile broadband users, For the first Path loss for an enhanced mobile broadband user , For wavelength, For the first The distance from an enhanced mobile broadband user to a wireless access point. For the first Transmit power for each enhanced mobile broadband user, For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the first Channel vectors for each enhanced mobile broadband user, , For the first Small-scale fading of the channel for an enhanced mobile broadband user. For the first Information from the perspective of an enhanced mobile broadband user. The variance of additive white Gaussian noise, The target data rate for enhanced mobile broadband users.

[0026] Based on the formula for the data rate satisfied by enhanced mobile broadband users during standalone transmission, the expression for the threshold value is obtained, as shown in formula (3): (3); In formula (3), the definition is... This is the threshold value.

[0027] Based on the beamforming weight vector and using threshold values, enhanced mobile broadband users are screened through wireless access points to select those that meet the criteria. Enhanced mobile broadband users constitute a subset of users.

[0028] Step C: Select the enhanced mobile broadband users with the best channel quality from the user subset and provide communication services; The channel quality of the enhanced mobile broadband user with optimal channel quality is satisfied by the formula shown in formula (4): (4); In formula (4), For a subset of users, For the first Enhanced mobile broadband users are those selected by setting threshold values ​​at the wireless access point. For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the first Channel vectors for each enhanced mobile broadband user, For the first An enhanced mobile broadband user, i.e., an enhanced mobile broadband user with the best channel quality, For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the first Channel vectors for each enhanced mobile broadband user.

[0029] Step 3: Obtain the communication information of the enhanced mobile broadband users served in the current time slot and feed it back to the wireless access point for calculation to obtain the maximum interference that the enhanced mobile broadband users served in the current time slot can tolerate while meeting the quality of service requirements; In this embodiment, the communication information of the enhanced mobile broadband user served in the current time slot includes the path loss, transmit power, channel vector, target data rate, and beamforming weight vector corresponding to the enhanced mobile broadband user served in the current time slot.

[0030] The expression for the quality of service requirements of the enhanced mobile broadband users currently served in the time slot under the condition of interference from large-scale machine-type communication users is shown in formula (5): (5); In formula (5), For the first An enhanced mobile broadband user, that is, an enhanced mobile broadband user currently served in the current time slot. A uniform linear array configured for wireless access points Beam gain for enhanced mobile broadband users, For the first Path loss for an enhanced mobile broadband user For the first Transmit power for each enhanced mobile broadband user, For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the first Channel vectors for each enhanced mobile broadband user, The variance of additive white Gaussian noise, For the target data rate of enhanced mobile broadband users, For the total interference of large-scale machine-type communication users, For the first The quality of service requirements of enhanced mobile broadband users in the presence of interference from large-scale machine-type communication users.

[0031] Based on the expression for the quality of service requirements of the enhanced mobile broadband users served in the current time slot under the condition of interference from large-scale machine-type communication users, the maximum interference that the enhanced mobile broadband users served in the current time slot can tolerate when meeting the quality of service requirements is obtained. The expression for the maximum interference that the enhanced mobile broadband users served in the current time slot can tolerate when meeting the quality of service requirements is shown in formula (6): (6); In formula (6), The maximum tolerable interference when meeting the quality of service requirements of the enhanced mobile broadband users served in the current time slot.

[0032] Step 4: Based on the maximum tolerable interference for enhanced mobile broadband users served in the current time slot to meet service quality requirements and the channel differences of large machine-type communication users, select several large machine-type communication users to share the same time-frequency resources with the enhanced mobile broadband users served in the current time slot, so as to realize the coexistence of uplink enhanced mobile broadband services and large machine-type communication services. Based on the maximum tolerable interference for enhanced mobile broadband users served in the current time slot to meet service quality requirements and the channel differences of massive machine-type communication users, several massive machine-type communication users are selected to share the same time-frequency resources with the enhanced mobile broadband users served in the current time slot. This achieves coexistence of uplink enhanced mobile broadband services and massive machine-type communication services through the following steps: Step a: Based on the maximum tolerable interference for enhanced mobile broadband users served in the current time slot to meet service quality requirements and the channel differences of large-scale machine-type communication users, select several activated large-scale machine-type communication users to share the same time-frequency resources with the enhanced mobile broadband users served in the current time slot. like Figure 2 The diagram shown is a schematic of a scenario where enhanced mobile broadband services and massive machine-type communication services coexist, as provided in this embodiment.

[0033] In this embodiment, the activation probability of large-scale machine-type communication users follows a Poisson distribution, assuming that... For a large number of machine-type communication users, then The probability of a large number of machine-type communication users being activated is: ; in, This represents the number of large-scale machine-type communication users that are activated. for The probability of a large number of machine-type communication users being activated. For arrival rate.

[0034] The formula satisfied by the selected large-scale machine-type communication users is shown in formula (7): (7); In formula (7), For the first An enhanced mobile broadband user, that is, an enhanced mobile broadband user currently served in the current time slot. The selected time slot is the first A large number of machine-type communication users The selected time slot is the first A large number of machine-type communication users The total number of large-scale machine-type communication users selected in the current time slot. For the first The beamforming weight vector corresponding to each enhanced mobile broadband user, that is, the beamforming weight vector corresponding to the enhanced mobile broadband user served in the current time slot. The uniform linear array configured for the wireless access point is selected for the current time slot. Beam gain for large-scale machine-type communication users The selected time slot is the first Path loss for a large number of machine-type communication users The selected time slot is the first Transmit power of a large number of machine-type communication users The selected time slot is the first Channel vectors for a large number of machine-type communication users The uniform linear array configured for the wireless access point is selected for the current time slot. Beam gain for large-scale machine-type communication users The selected time slot is the first Path loss for a large number of machine-type communication users The selected time slot is the first Transmit power of a large number of machine-type communication users The selected time slot is the first Channel vectors for a large number of machine-type communication users The maximum tolerable interference for enhancing mobile broadband users served in the current time slot to meet their quality of service requirements. The channel difference threshold for large-scale machine-type communication users.

[0035] Step b: Using non-orthogonal multiple access technology and serial interference cancellation technology, decode the superimposed signal received by the wireless access point, which consists of signals from enhanced mobile broadband users and signals from massive machine-type communication users, to achieve coexistence of uplink enhanced mobile broadband services and massive machine-type communication services. By utilizing non-orthogonal multiple access technology and serial interference cancellation technology, the superimposed signal received by the wireless access point, consisting of signals from enhanced mobile broadband users and massive machine-type communication users, is decoded to achieve coexistence of uplink enhanced mobile broadband services and massive machine-type communication services. This includes the following steps: Step i: Using non-orthogonal multiple access technology, treat the signals of large-scale machine-type communication users as interference signals and decode the signals of enhanced mobile broadband users; The decoding rate of the signal for enhanced mobile broadband users is: ; in, For the first An enhanced mobile broadband user, that is, an enhanced mobile broadband user currently served in the current time slot. For the first Decoding rate of the signal for an enhanced mobile broadband user. A uniform linear array configured for wireless access points Beam gain for enhanced mobile broadband users, For the first Path loss for an enhanced mobile broadband user For the first Transmit power for each enhanced mobile broadband user, For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the first Channel vectors for each enhanced mobile broadband user, The variance of additive white Gaussian noise, This constitutes total interference for large-scale machine-type communication users.

[0036] Step ii: Using serial interference cancellation technology, the signals of large-scale machine-type communication users are decoded sequentially according to the channel gain order of the large-scale machine-type communication users. The decoded signals of large-scale machine-type communication users are then subtracted from the superimposed signals until all signals of large-scale machine-type communication users have been decoded, thereby achieving the coexistence of uplink enhanced mobile broadband services and large-scale machine-type communication services. Channel gain ranking for large-scale machine-type communication users is as follows , , ... The 1st, 2nd, ..., selected timeslots in the current time slot Channel gain for large-scale machine-type communication users.

[0037] Using serial interference cancellation technology, the first [user name] is decoded sequentially according to the channel gain order of large-scale machine-type communication users. The signal of a large number of machine-type communication users, and the decoded first The signals of a large number of machine-type communication users are subtracted from the superimposed signals, and then decoded sequentially. The signal of the first large-scale machine-type communication user, and the first The signals of each large-scale machine-type communication user are subtracted from the superimposed signal, and so on, until the current time slot is selected. Until the signals of all large-scale machine-type communication users have been decoded, uplink enhanced mobile broadband services and large-scale machine-type communication services can coexist.

[0038] No. The decoding rate of signals for a large number of machine-type communication users is: ; in, For the first An enhanced mobile broadband user, that is, an enhanced mobile broadband user currently served in the current time slot. The selected time slot is the first A large number of machine-type communication users The selected time slot is the first A large number of machine-type communication users The total number of large-scale machine-type communication users selected in the current time slot. For the first Decoding rate of signals for a large number of machine-type communication users For the first The beamforming weight vector corresponding to each enhanced mobile broadband user, that is, the beamforming weight vector corresponding to the enhanced mobile broadband user served in the current time slot. The uniform linear array configured for the wireless access point is selected for the current time slot. Beam gain for large-scale machine-type communication users The selected time slot is the first Path loss for a large number of machine-type communication users The selected time slot is the first Transmit power of a large number of machine-type communication users The selected time slot is the first Channel vectors for a large number of machine-type communication users The uniform linear array configured for the wireless access point is selected for the current time slot. Beam gain for large-scale machine-type communication users The selected time slot is the first Path loss for a large number of machine-type communication users The selected time slot is the first Transmit power of a large number of machine-type communication users The selected time slot is the first Channel vectors for a large number of machine-type communication users The variance is the additive white Gaussian noise.

[0039] The uplink high-spectral-efficiency multiple access (HMI) service coexistence method provided in this embodiment estimates the angle information between each user and the wireless access point using the location information of enhanced mobile broadband (EMB) users and massive machine-type communication (MMC) users, and sets a threshold value. This allows for the selection of EMB users that meet the threshold value and have the best channel quality for communication service. The method also calculates the maximum tolerable interference for the EMB users served in the current time slot while meeting service quality requirements. Considering the channel differences of MMC users, the method selects MMC users to share the same time-frequency resources with the EMB users served in the current time slot, thus enabling uplink... Enhanced mobile broadband services and massive machine-type communication services coexist. Wireless access points utilize angle information to perform simulated beamforming design for enhanced mobile broadband users, effectively avoiding estimation and quantization errors caused by obtaining accurate channel information, thereby reducing the signaling overhead of the wireless access point. By employing non-orthogonal multiple access technology and serial interference cancellation technology, superimposed signals are decoded, ensuring that the quality of service for enhanced mobile broadband users meets requirements while providing communication services to multiple massive machine-type communication users. This achieves coexistence of uplink enhanced mobile broadband services and massive machine-type communication services, improving the spectrum efficiency of the communication system.

[0040] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for coexistence of uplink high-spectral-efficiency multiple access services, characterized in that, include: The location information of enhanced mobile broadband users and massive machine-type communication users is obtained, and the angle information between each user and the wireless access point is estimated based on the location information. Based on the angle information, a threshold value is set to filter out enhanced mobile broadband users who meet the threshold value and have the best channel quality for communication services. Obtain the communication information of the enhanced mobile broadband users served in the current time slot and feed it back to the wireless access point for calculation, and obtain the maximum interference that the enhanced mobile broadband users served in the current time slot can tolerate when meeting the quality of service requirements; Based on the maximum tolerable interference for enhanced mobile broadband users served in the current time slot to meet service quality requirements and the channel differences of massive machine-type communication users, several massive machine-type communication users are selected to share the same time-frequency resources with the enhanced mobile broadband users served in the current time slot, so as to realize the coexistence of uplink enhanced mobile broadband services and massive machine-type communication services. Based on the angle information, a threshold value is set to filter out enhanced mobile broadband users who meet the threshold value and have the best channel quality for communication services, including: Based on the angle information, simulated beamforming design is performed through a wireless access point to obtain the beamforming weight vector; Based on the beamforming weight vector, a threshold value is set through the wireless access point to filter enhanced mobile broadband users, and enhanced mobile broadband users that meet the threshold value are selected to form a user subset. Enhanced mobile broadband users with the best channel quality are selected from the user subset to provide communication services. The data rate of the enhanced mobile broadband user during standalone transmission satisfies the formula shown in formula (2): （2）； In formula (2), For the first One enhanced mobile broadband user, A uniform linear array configured for wireless access points Beam gain for enhanced mobile broadband users, For the first Path loss for an enhanced mobile broadband user , For wavelength, For the first The distance from an enhanced mobile broadband user to a wireless access point. For the first Transmit power for each enhanced mobile broadband user, For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the first Channel vectors for each enhanced mobile broadband user, , For the first Small-scale fading of the channel for an enhanced mobile broadband user. For the first Information from the perspective of an enhanced mobile broadband user. The variance of additive white Gaussian noise, Target data rate for enhanced mobile broadband users; Based on the formula that the data rate of the enhanced mobile broadband user during individual transmission satisfies, the expression for the threshold value is obtained, and the expression for the threshold value is shown in formula (3): （3）； In formula (3), the definition is... This is the threshold value; Based on the beamforming weight vector and using the threshold value, enhanced mobile broadband users are screened through the wireless access point to select those who meet the requirements. Enhanced mobile broadband users constitute a subset of users; The channel of the enhanced mobile broadband user with the best channel quality satisfies the formula shown in formula (4): （4）； In formula (4), For a subset of users, For the first Enhanced mobile broadband users are those selected by setting threshold values ​​at the wireless access point. For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the first Channel vectors for each enhanced mobile broadband user, For the first An enhanced mobile broadband user, i.e., an enhanced mobile broadband user with the best channel quality, For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the first Channel vectors for each enhanced mobile broadband user.

2. The uplink high-spectral-efficiency multiple access service coexistence method according to claim 1, characterized in that, Acquiring location information for enhanced mobile broadband users and massive machine-type communication users, and estimating the angle information between each user and the wireless access point based on the location information, includes: A coordinate system is established for the entire communication system, and wireless positioning technology is used to obtain the location information of enhanced mobile broadband users and large-scale machine communication users through wireless access points; Based on the location information, estimate the angle information between each user and the wireless access point; The angle information refers to the angle between each user and the uniform linear array configured for the wireless access point.

3. The uplink high-spectral-efficiency multiple access service coexistence method according to claim 1, characterized in that, The expression for the beamforming weight vector is shown in formula (1): （1）； In formula (1), For the first One enhanced mobile broadband user, For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the number of elements in a multi-antenna array, For the first An angle information for an enhanced mobile broadband user.

4. The uplink high-spectral-efficiency multiple access service coexistence method according to claim 1, characterized in that, The expression for the quality of service requirements of the enhanced mobile broadband users served in the current time slot under the condition of interference from large-scale machine-type communication users is shown in formula (5): (5); In formula (5), For the first An enhanced mobile broadband user, that is, an enhanced mobile broadband user currently served in the current time slot. A uniform linear array configured for wireless access points Beam gain for enhanced mobile broadband users, For the first Path loss for an enhanced mobile broadband user For the first Transmit power for each enhanced mobile broadband user, For the first Beamforming weight vectors corresponding to each enhanced mobile broadband user. For the first Channel vectors for each enhanced mobile broadband user, The variance of additive white Gaussian noise, For the target data rate of enhanced mobile broadband users, For large-scale machine-type communication users, For the first The quality of service requirements of enhanced mobile broadband users in the presence of interference from large-scale machine-type communication users; Based on the expression for the quality of service requirements of the enhanced mobile broadband users served in the current time slot under the condition of interference from large-scale machine-type communication users, the maximum interference that the enhanced mobile broadband users served in the current time slot can tolerate when meeting the quality of service requirements is obtained. The expression for the maximum interference that the enhanced mobile broadband users served in the current time slot can tolerate when meeting the quality of service requirements is shown in formula (6): （6）； In formula (6), The maximum tolerable interference when meeting the quality of service requirements of the enhanced mobile broadband users served in the current time slot.

5. The uplink high-spectral-efficiency multiple access service coexistence method according to claim 1, characterized in that, The communication information of the enhanced mobile broadband user served in the current time slot includes the path loss, transmit power, channel vector, target data rate, and beamforming weight vector corresponding to the enhanced mobile broadband user served in the current time slot.

6. The uplink high-spectral-efficiency multiple access service coexistence method according to claim 1, characterized in that, Based on the maximum tolerable interference for enhanced mobile broadband users served in the current time slot to meet service quality requirements and the channel differences of massive machine-type communication users, several massive machine-type communication users are selected to share the same time-frequency resources with the enhanced mobile broadband users served in the current time slot, thereby achieving the coexistence of uplink enhanced mobile broadband services and massive machine-type communication services, including: Based on the maximum tolerable interference for enhanced mobile broadband users served in the current time slot to meet service quality requirements and the channel differences of large-scale machine-type communication users, several activated large-scale machine-type communication users are selected to share the same time-frequency resources with the enhanced mobile broadband users served in the current time slot. By utilizing non-orthogonal multiple access technology and serial interference cancellation technology, the superimposed signal consisting of signals from enhanced mobile broadband users and massive machine-type communication users received by the wireless access point is decoded, thereby enabling the coexistence of uplink enhanced mobile broadband services and massive machine-type communication services. The formula satisfied by the selected large-scale machine-type communication users is shown in formula (7): （7）； In formula (7), For the first An enhanced mobile broadband user, that is, an enhanced mobile broadband user currently served in the current time slot. The selected time slot is the first one. A large number of machine-type communication users The selected time slot is the first one. A large number of machine-type communication users The total number of large-scale machine-type communication users selected in the current time slot. For the first The beamforming weight vector corresponding to each enhanced mobile broadband user, that is, the beamforming weight vector corresponding to the enhanced mobile broadband user served in the current time slot. The uniform linear array configured for the wireless access point is selected for the current time slot. Beam gain for large-scale machine-type communication users The selected time slot is the first one. Path loss for a large number of machine-type communication users The selected time slot is the first one. Transmit power of a large number of machine-type communication users The selected time slot is the first one. Channel vectors for a large number of machine-type communication users The uniform linear array configured for the wireless access point is selected for the current time slot. Beam gain for large-scale machine-type communication users The selected time slot is the first one. Path loss for a large number of machine-type communication users The selected time slot is the first one. Transmit power of a large number of machine-type communication users The selected time slot is the first one. Channel vectors for a large number of machine-type communication users The maximum tolerable interference for enhancing mobile broadband users served in the current time slot to meet their quality of service requirements. The channel difference threshold for large-scale machine-type communication users.

7. The uplink high-spectral-efficiency multiple access service coexistence method according to claim 6, characterized in that, By utilizing non-orthogonal multiple access technology and serial interference cancellation technology, the superimposed signal received by the wireless access point, consisting of signals from enhanced mobile broadband users and massive machine-type communication users, is decoded to achieve coexistence of uplink enhanced mobile broadband services and massive machine-type communication services. This includes: By using non-orthogonal multiple access technology, the signals of large-scale machine-type communication users are treated as interference signals, and the signals of enhanced mobile broadband users are decoded. By utilizing serial interference cancellation technology, the signals of large-scale machine-type communication users are sequentially decoded according to the channel gain order of the large-scale machine-type communication users, and the decoded signals of large-scale machine-type communication users are subtracted from the superimposed signal until all signals of large-scale machine-type communication users have been decoded, thereby realizing the coexistence of uplink enhanced mobile broadband services and large-scale machine-type communication services. The channel gain order for the large-scale machine-type communication users is as follows: , , … The 1st, 2nd, ..., selected timeslots in the current time slot Channel gain for large-scale machine-type communication users.

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