Multi-user receiving method and system based on antenna pointing sampling

Abstract

The present invention discloses a multi-user receiving method and system based on antenna pointing sampling. The method comprises the following steps: receiving continuous signals from multiple user stations that initiate communication requests at the same time and performing sampling; and directing the narrow beam antenna to the corresponding user station to receive the signal as required according to the position and time provided in the sampling information. In the system of the present invention, multiple user stations send continuous signals at the same time. The central station quickly switches the beam according to the geographical location of the user station, and samples the continuous signals sent by multiple user stations in sequence as required, thereby realizing the reception of signals from multiple user stations by the central station. The present invention supports multiple types of user stations with multiple modulation modes, has the advantages of high system efficiency and low complexity of user stations, and is particularly suitable for information aggregation at many locations in a wider space, especially information backhaul of a large number of low-rate and low-power user stations in a wider area.

Description

Technical Field

[0001] This invention relates to a wireless signal sampling and reception method, and more particularly to a multi-user reception method based on antenna pointing sampling. The central station performs rapid spatial switching sampling of continuous signals transmitted by multiple user stations, improving the overall uplink transmission efficiency of the system without increasing the transmission complexity of the user station system. This invention belongs to the field of wireless communication technology. Background Technology

[0002] Human society is about to enter an era of intelligent society where everything is interconnected. Data collection, logistics, and next-generation mobile communications all require support for massive numbers of low-speed device connections, posing challenges to traditional communication technologies. High connectivity, high efficiency, and low power consumption have become hot topics in communication technology research.

[0003] Existing wireless access networks generally employ multiple access technologies to achieve uplink communication between multiple user stations and the central station. Commonly used multiple access technologies include frequency division multiple access (FDMA), space division multiple access (SDMA), and time division multiple access (TDMA). When there are a large number of users with low-speed uplink services within the communication system, in FDMA and SDMA systems, a large number of users occupy fixed frequency or location resources, reducing system efficiency when transmitting low-speed services. TDMA and CDMA systems require time synchronization within the system, resulting in more complex transmitter structures at user stations, and the system is sensitive to delays caused by movement. Summary of the Invention

[0004] To overcome the above-mentioned shortcomings, the present invention aims to provide a multi-user reception method and system based on antenna pointing sampling.

[0005] To achieve the above objectives, the present invention provides a multi-user reception method based on antenna pointing sampling, the method comprising the following steps: receiving and sampling continuous signals from multiple user stations that simultaneously initiate communication requests;

[0006] According to the location and time provided in the sampling information, the narrow beam antenna is pointed to the corresponding user station to receive signals as needed.

[0007] Furthermore, the sampling information includes the user station's transmission frequency, frequency conversion parameters, demodulation parameters, reception time, and reception duration.

[0008] Furthermore, the step of receiving and sampling continuous signals from multiple user stations that simultaneously initiate communication requests includes:

[0009] When multiple user stations access the network or initiate communication, the central station collects or updates the current location information and signal information of each user station.

[0010] Write the user station location information into the sampling table;

[0011] The signal information transmitted by the user station is processed to obtain the user station's transmission frequency, frequency conversion parameters, demodulation parameters, and written into the sampling table;

[0012] The demodulation parameters of the user station are processed to obtain the user station sampling parameters, which are then written into the sampling table.

[0013] The user station sampling parameters are processed to obtain the user station's reception time and reception duration;

[0014] Sort and adjust the reception time and reception duration of each user station in the sampling table so that they do not overlap on the time axis;

[0015] The demodulation parameters and sampling parameters of the user station are processed, a sampling storage address is allocated to the user station, and the data is written into the sampling table.

[0016] Furthermore, the step of pointing the narrow-beam antenna towards the user station to receive signals as needed, according to the location and time provided in the sampling information, includes:

[0017] The central station queries the sampling table and points the narrow beam antenna toward the user station according to the user station location and reception time in the sampling table;

[0018] The central station receives the signal of the specified frequency sent by the target user station for a duration equal to the reception duration, according to the user station's transmission frequency and reception duration in the sampling table.

[0019] Furthermore, the following steps are also included:

[0020] The central station queries the user station frequency converter parameters, sampling parameters, and sampling storage addresses in the sampling table, and performs the following processing through the frequency converter sampling module:

[0021] The central station converts the frequency of the received user station signals according to the user station frequency conversion parameters in the sampling table through the frequency conversion sampling module.

[0022] The central station samples the frequency-converted user station signals using the frequency conversion sampling module according to the user station sampling parameters in the sampling table.

[0023] The central station stores the user station's sampled signals using a frequency conversion sampling module, according to the user station's sampled storage address in the sampling table.

[0024] Furthermore, the following steps are also included:

[0025] The central station receives information from user stations and demodulates the sampled data in the user station's storage address through the demodulation module according to the user station demodulation parameters in the sampling table.

[0026] Furthermore, it also includes the central station determining the timing, duration, frequency conversion parameters, sampling parameters, and demodulation parameters for receiving signals transmitted to a user station based on the preset transmission frequency and modulation method of the transmitted signal.

[0027] To achieve the above objectives, the present invention provides a multi-user receiving system based on antenna pointing sampling, comprising:

[0028] The sampling management module is used to receive and sample continuous signals from multiple user stations that simultaneously initiate communication requests.

[0029] The receiving module, according to the location and time in the sampling information provided by the sampling management module, points the narrow beam antenna to the corresponding user station to receive signals as needed.

[0030] Furthermore, the system also includes:

[0031] The frequency conversion sampling module converts the received user station signal according to the frequency conversion parameters in the received sampling information.

[0032] Furthermore, the system also includes:

[0033] The storage module is used to store the user station sampled signals according to the user station sampled storage address in the sampling information;

[0034] The demodulation module is used to demodulate the sampled data in the user station storage address according to the user station demodulation parameters in the sampling information.

[0035] In this invention, multiple user stations simultaneously transmit continuous signals. The central station rapidly switches beams based on the geographical location of the user stations, sampling the continuously transmitted signals from multiple user stations sequentially as needed, thereby enabling the central station to receive signals from multiple user stations. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the central station continuously receiving signal sampling from the user station.

[0037] Figure 2 This is a schematic diagram of multi-user sampling.

[0038] Figure 3 The structural block diagram of the system of the present invention.

[0039] Figure 4 A schematic diagram of the method of the present invention. Detailed Implementation

[0040] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0041] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] In a narrow-beam antenna pointing method that allows for rapid and adjustable pointing and cyclic sampling of multiple continuous signals, the low-rate information transmitted by the user station is modulated into its continuously transmitted signal, eliminating the need for unified planning and allocation of resources such as frequency and time slots between user stations. Figure 1 As shown in the diagram. In this method, the central station distinguishes user stations by using a narrow beam pointing direction. User station uplink communication does not require fixed allocation of resources such as frequency, azimuth, time slots, or orthogonal coding. In this method, the central station demodulates the modulated information relayed by users by accumulating sufficient sampling point data. The information transmission rate of user stations is related to the sampling frequency, and user stations can adjust their rates according to their own services, supporting some high-speed users. In this method, when the central station uses a narrow beam antenna to sample a specific user station, interference from signals transmitted by user stations in other locations does not affect the demodulation of the sampled signal from that user station. Even when a large number of user stations are distributed and move across a wide area, the system efficiency will not significantly decrease.

[0045] like Figure 2 As shown, assume that the central station needs to demodulate user 1's information within the time period T = t0 - t NThe first sample is taken once within the same time period T, with a starting time of t0 and a duration of t1-t0. The second sample is taken once within the same time period T, with a starting time of t1 and a duration of t2-t1. The third sample is taken once within the same time period T. N-1 The duration is t N -t N-1 At the system level, the central station samples and receives multiple continuous signals (cross-sampling), while each user station simultaneously receives the information it sends.

[0046] Typical applications of the multi-user reception method based on antenna pointing sampling of this invention include: Figure 3 As shown. Figure 3 In this system, the central station is equipped with i narrow-beam antennas with rapidly adjustable pointing, j frequency conversion sampling modules, k demodulation modules, as well as a receiving module, a sampling management module, and a memory.

[0047] When one or more user stations access the network or initiate communication, the sampling management module collects or updates the current location information and transmitted signal information of each user station and processes it. Based on the user station location information and transmitted signal information, it obtains the transmission frequency, frequency conversion parameters, demodulation parameters, sampling parameters, reception time, and reception duration. It then assigns specific reception time, reception duration, and storage address and writes the parameters into the sampling table. The narrow-beam antenna, according to the user station location, reception time, transmission frequency, and reception duration in the sampling table, points towards the user station and receives the signal transmitted by the user station at that frequency for a duration equal to the reception duration, transmitting the received signal to the frequency conversion sampling module. The central station can use one or more narrow beams for reception. The central station's narrow-beam antenna can quickly adjust its pointing according to the user station's location information. The central station's receiving module can quickly receive signals based on the user station's transmission frequency.

[0048] The frequency conversion sampling module converts the received user station signal according to the user station frequency conversion parameters in the sampling table, samples the converted user station signal according to the user station sampling parameters, and stores the sampled user station signal according to the user station sampling storage address. The central station can use one or more frequency conversion sampling modules. The central station's frequency conversion sampling module can quickly perform frequency conversion sampling based on the user station frequency conversion parameters and sampling parameters.

[0049] The demodulation module demodulates the sampled data stored at the user station's address according to the demodulation parameters in the sampling table. The central station can use one or more demodulation modules. The central station's demodulation module can demodulate the sampled data in the stored address based on the demodulation parameters. The signal received by the central station through a narrow beam meets the requirements for frequency conversion sampling and obtaining the corresponding sampling point values. The sampled point data stored at the user station meets its demodulation requirements.

[0050] An embodiment of the present invention

[0051] This embodiment of the multi-user reception method based on antenna pointing sampling includes the following steps:

[0052] A. When one or more user stations access the network or initiate communication, the central station collects or updates the current location information and transmitted signal information of each user station, and performs the following processing through the sampling management module.

[0053] A1 writes the user station location information into the sampling table, and the sampling table used by each module in the central station is unique.

[0054] A2 processes the signal information transmitted by the user station, obtains the user station's transmission frequency, frequency conversion parameters, and demodulation parameters, and writes them into the sampling table.

[0055] A3 processes the demodulation parameters of the user station to obtain the user station sampling parameters, and writes them into the sampling table.

[0056] A4 processes the user station's sampling parameters to obtain the user station's reception time and reception duration.

[0057] A5 sorts and adjusts the reception time and reception duration of each user station in the sampling table to ensure that they do not overlap on the time axis.

[0058] A6 processes the demodulation parameters and sampling parameters of the user station, allocates sampling storage addresses for the user station, and writes them into the sampling table.

[0059] B. When the central station receives user station information, it queries the user station location, reception time, transmission frequency, and reception duration in the sampling table and processes them as follows through the receiving module.

[0060] According to the user station location and reception time in the sampling table, the B1 central station points the narrow beam antenna towards the user station.

[0061] According to the transmission frequency and reception duration of each user station in the sampling table, the B2 central station receives the signal of the specified frequency sent by the target user station for a duration equal to the reception duration.

[0062] B3 transmits the received signal to C, and then transfers it to B.

[0063] C. When a signal is received from the receiving module, the central station queries the user station frequency conversion parameters, sampling parameters, and sampling storage address in the sampling table, and performs the following processing through the frequency conversion sampling module.

[0064] According to the user station frequency conversion parameters in the sampling table, the C1 central station converts the frequency of the received user station signals through the frequency conversion sampling module.

[0065] According to the user station sampling parameters in the sampling table, the C2 central station samples the frequency-converted user station signals through the frequency conversion sampling module.

[0066] According to the user station sampling storage address in the sampling table, the C3 central station stores the user station sampling signal through the frequency conversion sampling module and transfers it to C.

[0067] D. When the central station receives information from the user station, it demodulates the sampled data in the user station's storage address through the demodulation module according to the user station demodulation parameters in the sampling table.

[0068] The aforementioned central station may use one or more sampling management modules. Within the narrow beam coverage area of ​​the central station, adjacent user stations transmit at different frequencies. Outside the narrow beam coverage area of ​​the central station, user stations may transmit at the same or different frequencies.

[0069] As a further improvement of the present invention, the central station can determine the timing of receiving the transmitted signal, the duration of receiving, the frequency conversion parameters, the sampling parameters, and the demodulation parameters of the transmitted signal to a user station based on the transmitted signal information such as the transmission frequency and modulation method preset by a user station.

[0070] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described above. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Many other changes and modifications made without departing from the concept and scope of the present invention should be considered within the scope of protection of the present invention.

[0071] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0072] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A multi-user receiving method based on antenna pointing sampling, characterized in that: The method comprises the following steps: receiving and sampling continuous signals from a plurality of user stations that simultaneously initiate communication requests; According to the position and time provided in the sampling information, the narrow beam antenna is directed to the corresponding user station to receive the signal as needed; The step of receiving continuous signals from multiple user stations that simultaneously initiate communication requests and performing sampling comprises: The central station collects or updates the current location information and transmission signal information of each user station when multiple user stations access the network or initiate communication; Write the user station location information into the sampling table; Process the signal information sent by the user station to obtain the user station transmission frequency, frequency conversion parameters, demodulation parameters, and write them into the sampling table; Process the demodulation parameters of the user station to obtain the sampling parameters of the user station and write them into the sampling table; Processing the sampling parameters of the user station to obtain the receiving time and the receiving duration of the user station; Sort and adjust the receiving time and receiving duration of each user station in the sampling table so that they do not overlap on the time axis; Process the demodulation parameters and sampling parameters of the user station, allocate a sampling storage address for the user station, and write it into the sampling table; The step of directing the narrow beam antenna to the user station to receive the signal as needed according to the position and time provided in the sampling information comprises: The central station queries the sampling table and points the narrow beam antenna to the user station according to the user station position and reception time in the sampling table; The central station receives the frequency signal sent by the pointed user station for a duration equal to the receiving duration according to the user station transmission frequency and receiving duration in the sampling table.

2. The multi-user receiving method based on antenna pointing sampling according to claim 1, characterized in that: The sampling information includes the user station transmission frequency, frequency conversion parameters, demodulation parameters, receiving time, and receiving duration.

3. The multi-user receiving method based on antenna pointing sampling according to claim 1, characterized in that: The following steps are also included: The central station queries the user station frequency conversion parameters, sampling parameters and sampling storage address in the sampling table, and performs the following processing through the frequency conversion sampling module: The central station converts the frequency of the received user station signal through the frequency conversion sampling module according to the user station frequency conversion parameters in the sampling table; The central station samples the frequency-converted user station signal through the frequency conversion sampling module according to the user station sampling parameters in the sampling table; The central station stores the user station sampling signal through the variable frequency sampling module according to the user station sampling storage address in the sampling table.

4. The multi-user receiving method based on antenna pointing sampling as claimed in claim 3, characterized in that: The following steps are also included: The central station receives the user station information, and demodulates the sampled data in the user station storage address through the demodulation module according to the user station demodulation parameters in the sampling table.

5. The multi-user receiving method based on antenna pointing sampling according to claim 1, characterized in that: It also includes the central station determining the reception timing, reception duration, frequency conversion parameters, sampling parameters and demodulation parameters of the signal sent to a user station according to the transmission frequency and modulation method of the signal preset by the user station.

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