An interference avoidance method and device under a wireless private network

Abstract

The application discloses an interference avoidance method and device under a wireless private network, and relates to the technical field of wireless communication.The application informs an access terminal of available resource blocks on / off a cell through a bitmap by a base station broadcast, and when the base station detects high-interference resource blocks, the high-interference resource blocks are set as a disabled state and the cell resource bitmap is updated through broadcast, so that interference avoidance is realized.Based on this, the application can map discontinuous physical resource blocks in a downlink resource bitmap into continuous logical resource blocks, and only the scheduling quantity and starting position information of the logical resource blocks are carried in downlink control information, so that the currently used physical resource blocks can be determined.Compared with the indication scheduling resource mode using a resource bitmap in the current NR protocol, when scheduling discontinuous or continuous physical resource blocks, the access terminal does not need to be informed of specific resource bitmaps, the bit quantity carried by downlink control information is reduced, and control channel unit resources are saved.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to an interference avoidance method and apparatus for wireless private networks. Background Technology

[0002] Currently, in wireless communication systems, interference management is crucial for ensuring communication quality and spectrum efficiency, with uplink and downlink co-channel interference being a particularly prominent challenge.

[0003] In existing technologies, the NR protocol can achieve discontinuous resource scheduling by configuring different Resource Block Group (RBG) sizes and carrying resource bitmaps in Downlink Control Information (DCI).

[0004] However, the bandwidth of industry private networks is severely limited (usually less than 5 Mbps), while the bitmap itself has a large bitstream. Transmitting it in narrowband channels will occupy the already scarce control channel resources, resulting in a significant reduction in spectrum efficiency. Although the mechanism itself has flexible scheduling capabilities, it is difficult to meet the dual requirements of industry private networks for real-time interference avoidance and efficient use of spectrum resources. Summary of the Invention

[0005] Therefore, it is necessary to provide an interference avoidance method and device for wireless private networks to address the above-mentioned technical problems.

[0006] The present invention adopts the following technical solution: This invention provides an interference avoidance method under a private wireless network, wherein the base station performs the following steps: According to the preset interference measurement time slot period, the uplink and downlink scheduling is stopped and uplink interference measurement is performed within the measurement time slot of the current period to obtain the uplink interference intensity of each resource block under the private network frequency band. Each resource block with uplink interference intensity greater than the demodulation performance threshold is marked as a disabled resource block, and an updated uplink resource bitmap is generated. Receive the downlink interference intensity of each resource block under the private network frequency band measured by each access terminal, mark each resource block with downlink interference intensity greater than the demodulation performance threshold as a disabled resource block, and generate an updated downlink resource bitmap; Based on the update cycle identifier, the updated uplink / downlink resource bitmap is applied to perform uplink / downlink scheduling for each access terminal, and a resource bitmap update message carrying the updated uplink / downlink resource bitmap, update cycle identifier, and uplink / downlink resource identifier is sent to the terminal via radio broadcast. This enables each access terminal to synchronously apply the updated uplink / downlink resource bitmap with the base station based on the uplink / downlink resource identifier and update cycle identifier, and determine the frequency domain resource location for transmitting / receiving data.

[0007] Optionally, the step of applying the updated uplink resource bitmap / downlink resource bitmap to perform uplink and downlink scheduling for each access terminal based on the update cycle identifier specifically includes: The effective time of the updated uplink resource bitmap / downlink resource bitmap is determined based on the product of the update cycle identifier and the preset broadcast cycle and the terminal time offset. When the base station system time reaches the effective time, the application uses the updated uplink resource bitmap / downlink resource bitmap to perform uplink and downlink scheduling for each access terminal.

[0008] Optionally, the updated uplink / downlink resource bitmap is used to schedule uplink and downlink for each access terminal, specifically including: When receiving uplink data sent by the access terminal, the uplink data is received through the available physical resource blocks in the updated uplink resource bitmap; When sending downlink data to the access terminal, discontinuous physical resource blocks in the downlink resource bitmap are mapped to contiguous logical resource blocks, and downlink control information carrying the scheduling quantity and starting position information of the logical resource blocks is sent to the access terminal. This enables the terminal to determine the mapping relationship between physical resource blocks and logical resource blocks by applying the updated downlink resource bitmap, and to determine the physical frequency domain resource location of the received data based on the downlink control information.

[0009] Optionally, the method further includes: Based on the path loss measurement of the access terminals, the access terminals are grouped by distance, and the terminal grouping information is sent to each access terminal. The resource bitmap update message also includes a terminal group identifier; the step of enabling each access terminal to synchronize and apply the updated downlink resource bitmap with the base station based on the uplink and downlink resource identifiers and the update cycle identifier specifically includes: When each access terminal determines that it falls into the terminal group corresponding to the resource bitmap update message based on the terminal group identifier, it synchronously applies the updated downlink resource bitmap with the base station based on the uplink and downlink resource identifiers and the update cycle identifier.

[0010] This invention provides an interference avoidance method under a private wireless network, wherein the terminal performs the following steps, including: According to the preset interference measurement time slot period, downlink interference measurement is performed within the measurement time slot of the current period to obtain the downlink interference intensity of each resource block under the private network frequency band. The downlink interference intensity of each resource block is uploaded to the network management platform and forwarded to the base station through the network management platform; the base station marks each resource block with downlink interference intensity greater than the demodulation performance threshold as a disabled resource block and generates an updated downlink resource bitmap; When a resource bitmap update message carrying the updated uplink / downlink resource bitmap, update cycle identifier, and uplink / downlink resource identifier is received from the base station, the updated uplink / downlink resource bitmap is applied synchronously with the base station based on the uplink / downlink resource identifier and update cycle identifier to determine the frequency domain resource location for transmitting / receiving data.

[0011] Optionally, the step of synchronously applying the updated uplink resource bitmap / downlink resource bitmap with the base station based on the uplink / downlink resource identifier and the update cycle identifier specifically includes: The effective time of the updated uplink resource bitmap / downlink resource bitmap is determined based on the product of the update cycle identifier and the preset broadcast cycle and the terminal time offset. When the terminal system time reaches the effective time, the updated uplink resource bitmap / downlink resource bitmap is applied synchronously with the base station based on the uplink and downlink resource identifiers.

[0012] Optionally, determining the frequency domain resource location for transmitting / receiving data specifically includes: When uplinking data is uploaded to the base station, the uplink data is uploaded through the available physical resource blocks in the updated uplink resource bitmap; When receiving downlink data sent by the base station, receive downlink control information sent by the base station carrying the scheduling quantity and starting position information of logical resource blocks; By applying the updated downlink resource bitmap, discontinuous physical resource blocks in the downlink resource bitmap are mapped to contiguous logical resource blocks, and the physical frequency domain resource location of the received data is determined based on the downlink control information.

[0013] Optionally, the resource bitmap update message may further include a terminal group identifier; The step of synchronously applying the updated downlink resource bitmap with the base station based on the uplink and downlink resource identifiers and the update cycle identifier specifically includes: When a terminal determines that it falls into the terminal group corresponding to the resource bitmap update message based on the terminal group identifier, it applies the updated downlink resource bitmap in sync with the base station based on the uplink and downlink resource identifiers and the update cycle identifier.

[0014] This invention provides an interference avoidance device for private wireless networks, comprising: The uplink interference measurement module is used to stop uplink and downlink scheduling and perform uplink interference measurement within the measurement time slot of the current period according to the preset interference measurement time slot period, so as to obtain the uplink interference intensity of each resource block under the private network frequency band. The uplink update module is used to mark each resource block with uplink interference intensity greater than the demodulation performance threshold as a disabled resource block and generate an updated uplink resource bitmap. The downlink update module is used to receive the downlink interference intensity of each resource block under the private network frequency band measured by each access terminal, mark each resource block with downlink interference intensity greater than the demodulation performance threshold as a disabled resource block, and generate an updated downlink resource bitmap. The first application module is used to perform uplink and downlink scheduling on each access terminal according to the update cycle identifier and the updated uplink / downlink resource bitmap. It also sends a resource bitmap update message to the terminal via wireless broadcast, carrying the updated uplink / downlink resource bitmap, update cycle identifier, and uplink / downlink resource identifier. This enables each access terminal to synchronously apply the updated uplink / downlink resource bitmap with the base station based on the uplink / downlink resource identifier and update cycle identifier, and determine the frequency domain resource location for transmitting / receiving data.

[0015] This invention provides an interference avoidance device for private wireless networks, comprising: The downlink interference measurement module is used to perform downlink interference measurement within the measurement time slot of the current period according to the preset interference measurement time slot period, so as to obtain the downlink interference intensity of each resource block under the private network frequency band. The sending module is used to upload the downlink interference intensity of each resource block to the network management platform, and forward it to the base station through the network management platform; the base station marks each resource block with downlink interference intensity greater than the demodulation performance threshold as a disabled resource block, and generates an updated downlink resource bitmap; The second application module is used to determine the frequency domain resource location of the transmitted data / received data when it detects a resource bitmap update message broadcast by the base station, which carries the updated uplink / downlink resource bitmap, update cycle identifier, and uplink / downlink resource identifier. The updated uplink / downlink resource bitmap is applied synchronously with the base station based on the uplink / downlink resource identifier and update cycle identifier.

[0016] The present invention provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-described interference avoidance method under a wireless private network.

[0017] The present invention provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the interference avoidance method under the above-mentioned wireless private network.

[0018] The above-mentioned at least one technical solution adopted in this invention can achieve the following beneficial effects: This invention informs access terminals of available uplink / downlink resource blocks in a cell via a bitmap broadcast from the base station. When the base station detects a high-interference resource block, it disables the high-interference resource block and updates the cell resource bitmap via broadcast, thus achieving interference avoidance. Based on this, this invention can map discontinuous physical resource blocks in the downlink resource bitmap to contiguous logical resource blocks, and determine the currently used physical resource blocks by only carrying the scheduling quantity and starting position information of the logical resource blocks in the downlink control information. Compared to the current NR protocol's method of indicating resource scheduling using resource bitmaps, this invention does not require informing the access terminal of the specific resource bitmap when scheduling physically discontinuous or contiguous physical resource blocks, reducing the number of bits carried in the downlink control information and saving control channel element (CCE) resources. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 A flowchart illustrating an interference avoidance method under a private wireless network provided by the present invention. Figure 1 ; Figure 2 A flowchart illustrating an interference avoidance method under a private wireless network provided by the present invention. Figure 2 ; Figure 3 A schematic diagram of a mapping relationship provided by the present invention; Figure 4 A schematic diagram of uplink interference avoidance provided by the present invention; Figure 5 A schematic diagram of downlink interference avoidance provided by the present invention; Figure 6 A schematic diagram of an interference avoidance device for a private wireless network provided by the present invention. Figure 1 ; Figure 7 A schematic diagram of an interference avoidance device for a private wireless network provided by the present invention. Figure 2 ; Figure 8 A schematic diagram of a computer device for implementing an interference avoidance method under a wireless private network, provided by the present invention. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] Currently, the bandwidth of industry private networks is severely limited (typically less than 5 Mbps), while bitmaps themselves have large bitstreams. Transmitting them in narrowband channels consumes already scarce control channel resources, leading to a significant reduction in spectrum efficiency. Although the mechanism itself has flexible scheduling capabilities, it is difficult to meet the dual requirements of industry private networks for real-time interference avoidance and efficient use of spectrum resources. Industry private networks need a more efficient interference information broadcasting and resource indication scheme that ensures the real-time nature of interference information while having lower overhead.

[0023] To address the impact of random, persistent interference on communication system performance in industry-specific wireless private networks, and to improve reliability while minimizing disruption to other communication systems, this invention proposes an interference avoidance scheme. The scheme improves spectrum utilization by dynamically adjusting the use of physical resource blocks to avoid interfered blocks. It enhances real-time performance by periodically measuring interference and updating the resource bitmap, enabling rapid response and handling of interference events and ensuring the real-time performance of the communication system. Finally, it simplifies complexity by using periodic broadcasting of system messages and a resource bitmap update mechanism to simplify interference management and reduce implementation difficulty.

[0024] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of an interference avoidance method under a private wireless network according to the present invention. The base station performs the following steps, specifically including the following steps: S101: According to the preset interference measurement time slot period, stop uplink and downlink scheduling and perform uplink interference measurement within the measurement time slot of the current period to obtain the uplink interference intensity of each resource block under the private network frequency band.

[0026] S102: Mark each resource block with uplink interference intensity greater than the demodulation performance threshold as a disabled resource block and generate an updated uplink resource bitmap.

[0027] S103: Receive the downlink interference intensity of each resource block under the private network frequency band measured by each access terminal, mark each resource block with downlink interference intensity greater than the demodulation performance threshold as a disabled resource block, and generate an updated downlink resource bitmap.

[0028] S104: Based on the update cycle identifier, apply the updated uplink resource bitmap / downlink resource bitmap to perform uplink and downlink scheduling for each access terminal, and send a resource bitmap update message carrying the updated uplink resource bitmap / downlink resource bitmap, update cycle identifier, and uplink / downlink resource identifier to the terminal via radio broadcast; so that each access terminal can synchronously apply the updated uplink resource bitmap / downlink resource bitmap with the base station based on the uplink / downlink resource identifier and update cycle identifier to determine the frequency domain resource location for transmitting / receiving data.

[0029] Figure 2 This is a flowchart illustrating an interference avoidance method under a private wireless network according to the present invention. The terminal performs the following steps, specifically including the following steps: S201: Based on the preset interference measurement time slot period, perform downlink interference measurement within the measurement time slot of the current period to obtain the downlink interference intensity of each resource block under the private network frequency band.

[0030] S202: Upload the downlink interference intensity of each resource block to the network management platform, and forward it to the base station through the network management platform; make the base station mark each resource block with downlink interference intensity greater than the demodulation performance threshold as a disabled resource block, and generate an updated downlink resource bitmap.

[0031] S203: When a resource bitmap update message carrying the updated uplink / downlink resource bitmap, update cycle identifier, and uplink / downlink resource identifier is received from the base station, the updated uplink / downlink resource bitmap is applied synchronously with the base station based on the uplink / downlink resource identifier and update cycle identifier to determine the frequency domain resource location for transmitting / receiving data.

[0032] For ease of explanation, the following description uses the base station as the executing entity on the wireless communication base station side and the terminal as the executing entity on the terminal side accessing the base station. The base station mentioned in this invention can be a server located at the communication base station, or a device such as a desktop computer capable of executing the solution of this invention. The terminal mentioned in this invention can be a server used by a user, or a device such as a desktop computer or handheld terminal capable of executing the solution of this invention.

[0033] This invention addresses the issue of random, persistent interference in non-exclusive spectrum within industry networks by proposing an interference avoidance scheme based on bitmap updates. The base station generates uplink and downlink resource bitmaps based on its own measurements of uplink interference and downlink interference reported by terminals, and sends these bitmaps to terminals via periodic broadcasting. This ensures that terminals currently camped in the cell can track changes in uplink and downlink radio channel resources in real time. The base station reduces the impact of interference on system performance by dynamically disabling RB resources. The specific description is as follows:

[0034] 1. Determine the mapping relationship between physical frequency domain resources and virtual frequency domain resources.

[0035] The cell physical resource blocks (RBs) under the current bandwidth are numbered from P0 to Pn in order from low frequency to high frequency. The logical resource block indices, represented by V0 to Vn, establish a mapping relationship between logical resource block indices and physical resource blocks, thus mapping discontinuous physical resource blocks to contiguous logical resource blocks. This is represented in the form of a resource bitmap, where each bit represents a physical RB, with unavailable RBs represented by 0 and available RBs by 1. If the current RB is subject to interference, it is marked as unavailable. Figure 3 As shown, Figure 3 This is a schematic diagram of a mapping relationship in this invention.

[0036] 2. Broadcast system messages.

[0037] The System Information Block (SIBx) on the base station side carries the available physical resource bitmap, uplink / downlink resource identifiers, terminal group identifiers (IDs), and update cycle identifiers for the current cell. The physical resource bitmap represents the interference distribution under the current cell bandwidth; the uplink / downlink resource identifier indicates whether the current broadcast cycle carries an uplink / downlink resource bitmap or a downlink resource bitmap; the terminal group ID identifies which terminal group the downlink resource bitmap carried by the system message belongs to (an application example is shown in Table 1); and the update cycle identifier is used to calculate the effective time of the new bitmap when it changes. This information is periodically broadcast in the current cell via system messages, and the broadcast cycle is communicated to the terminal (UE) via the Master Information Block (MIB).

[0038] Table 1 Terminal Grouping Diagram 3. Divide resource groups based on measured interference intensity.

[0039] The base station configures measurement time slots according to performance requirements. During these measurement time slots, uplink / downlink scheduling for terminals is stopped. At this time, uplink channel interference is measured on the base station side, and at the same time, the terminals camped in the cell also measure downlink channel interference and save the data on the terminals.

[0040] a. For the uplink resource bitmap, since the uplink receiver is at the base station, uplink scheduling maintains an uplink resource bitmap based on interference measurements, which applies to all terminals camped within the cell. The base station identifies whether interference exists on a specific RB based on an appropriate interference threshold.

[0041] b. For the downlink bitmap, the base station maintains four groups of resource bitmaps (default configuration, near point, mid point, and far point) based on complexity considerations. Downlink scheduling is performed based on these four bitmaps. When a terminal accesses a cell using the default downlink resource bitmap, the base station divides the terminals camped in the cell into three groups (near point, mid point, and far point) based on the path loss estimates for different terminals and the Channel State Information (CSI) reported by the terminals, and informs the terminals of the grouping information and interference measurement period through reconfiguration messages. When a terminal detects a change in the downlink bitmap, it only tracks the bitmap changes of its own resource group.

[0042] 4. Downlink interference collection and analysis.

[0043] The network management platform periodically sends instructions to higher layers to notify the application layer of the terminals of the interference measurement information uploaded and saved. The network management platform analyzes the collected terminal interference information, for example, by grouping the interference measurement results uploaded by terminals at near, medium and far points and averaging them, calculating the average interference magnitude of terminals in different groups at different RB locations within the bandwidth, and notifying the higher layers of the base station of this interference information. The base station generates downlink resource bitmaps for different groups based on the interference information of different groups and sends broadcast notifications to the terminals to update the resource bitmaps.

[0044] 5. The base station sends a broadcast to update the resource bitmap.

[0045] Before the terminal accesses the network, the base station does not distinguish the group to which it belongs and uses the downlink bitmap with the default configuration. When the terminal maintains downlink synchronization in the cell it is camped on, it tracks the changes in the base station resource bitmap by periodically detecting the base station system messages (SIBx).

[0046] a. Upward bitmap update conditions: When the terminal detects that the uplink / downlink resource identifier in the system message (SIBx) is 0 and the update cycle identifier is not 0, it indicates that the uplink resource bitmap needs to be updated. The terminal calculates the effective time of the new bitmap based on the update cycle identifier and keeps it synchronized with the base station.

[0047] b. Downlink bitmap update conditions: When the terminal detects that the uplink / downlink resource identifier is 1 in the system message (SIBx) and the update cycle identifier is not 0, and the terminal also identifies that the resource group ID matches the resource ID stored in its own database, it indicates that the downlink resource bitmap needs to be updated. The terminal calculates the effective time based on the update cycle identifier and keeps it synchronized with the base station.

[0048] 6. Scheduling based on physical resource bitmap to avoid interference.

[0049] During base station scheduling, data is transmitted or received only on RBs marked as available on the resource bitmap to avoid interference. The number of scheduled RBs and the logical starting position information of the starting RB (i.e., the RIV value, ResourceIndication Value) are carried in the DCI. The terminal calculates the mapping relationship between the logical RB position and the physical RB position through the currently saved RB resource bitmap to determine the physical RB position for receiving or transmitting.

[0050] Based on the above description, the present invention also provides Figure 4 The diagram showing upward interference avoidance is shown, and Figure 5 The diagram illustrates downlink interference avoidance. Furthermore, this invention also provides embodiments of the interference avoidance method applied in a private wireless network:

[0051] 1. Interference measurement configuration: 1.1 The base station is configured with an interference period measurement time slot. When the base station encounters a measurement time slot, it stops uplink and downlink scheduling. During the measurement time slot, the base station and the terminal simultaneously measure uplink or downlink interference. 1.2 After the terminal accesses the network, the base station needs to group the terminal based on path loss measurements and inform the terminal of the group information via RRC reconfiguration. This information is used for downlink resource bitmap updates.

[0052] 2. Uplink Interference Avoidance Procedure: 2.1 The base station can assess whether the interference intensity on each RB exceeds the demodulation performance threshold based on uplink interference measurements over a period of time. If it cannot be used, it is marked as a disabled RB, that is, the corresponding resource bitmap ratio is set to 0. 2.2 The base station broadcasts a new uplink resource bitmap via system message and calculates the effective time of the new bitmap based on the update cycle identifier N carried by the message. Bitmap effective time = N * system message broadcast cycle + offset configuration The offset configuration is the processing time reserved for the terminal.

[0053] 2.3 If the terminal detects a new uplink resource bitmap (determined by the uplink / downlink resource identifier in the system message), that is, when the update cycle identifier N in the system message is a non-zero value, the bitmap effective time is calculated according to the same rules in 2.2.

[0054] 2.4 When the system time of the base station and the terminal is equal to the effective time of the new bitmap, the base station uses the new uplink resource bitmap to schedule the terminal, and the terminal also uses the new resource bitmap to calculate the frequency domain resource location for transmitting data.

[0055] 3. Downlink Interference Avoidance Procedure: 3.1 The terminal needs to save the downlink interference values ​​measured in the periodic measurement time slot in a local directory in a specific file format.

[0056] 3.2 The network management system sends an instruction to the base station to notify the terminal to upload and save downlink interference measurement files. These files belong to application layer data and are collected and parsed by the network management platform. The analysis results are communicated to the higher layers of the base station via internal signaling. Based on this, the base station can disable RBs with high interference and generate a new downlink resource bitmap.

[0057] 3.3 The base station broadcasts a new downlink resource bitmap via system message and calculates the effective time of the new bitmap based on the update cycle identifier N carried by the message. Bitmap effective time = N * system message broadcast cycle + offset configuration The offset configuration is the processing time reserved for the terminal.

[0058] 3.4 After receiving the system message, the terminal first determines whether it is a downlink resource bitmap based on the uplink / downlink resource identifier it carries, and then determines whether it belongs to its own resource group based on the resource group ID. If these conditions are met, the terminal calculates the new bitmap effective time based on the update cycle identifier N, as described in 3.3.

[0059] 3.5 When the system time of the base station and the terminal is equal to the effective time of the new bitmap, the base station uses the new downlink resource bitmap to schedule the terminal, and the terminal also uses the new resource bitmap to calculate the frequency domain resource location of the received data.

[0060] based on Figure 1 The interference avoidance method shown in the wireless private network involves the base station broadcasting a bitmap to inform the access terminal of the available uplink / downlink resource blocks in the cell. When the base station detects a high-interference resource block, it disables the high-interference resource block and updates the cell resource bitmap via broadcast to achieve interference avoidance. Based on this, the present invention can map discontinuous physical resource blocks in the downlink resource bitmap to contiguous logical resource blocks, and only needs to carry the scheduling quantity and starting position information of the logical resource blocks in the downlink control information to determine the currently used physical resource blocks. Compared with the current NR protocol's method of indicating resource scheduling using resource bitmaps, this method does not require informing the access terminal of the specific resource bitmap when scheduling physically discontinuous or contiguous physical resource blocks, reducing the number of bits carried in the downlink control information and saving control channel element (CCE) resources.

[0061] When applying the interference avoidance method for wireless private networks provided by this invention, it is not necessary to consider... Figure 1 The steps shown are executed in sequence. The specific execution order of each step can be determined as needed, and this invention does not impose any restrictions on it.

[0062] The above describes one or more embodiments of the interference avoidance method under a private wireless network. Based on the same idea, the present invention also provides a corresponding interference avoidance device under a private wireless network, such as... Figure 2 As shown.

[0063] Figure 6 This invention provides a schematic diagram of an interference avoidance device for a private wireless network. The device corresponds to a base station application and includes: The uplink interference measurement module 301 is used to stop uplink and downlink scheduling and perform uplink interference measurement within the measurement time slot of the current period according to the preset interference measurement time slot period, so as to obtain the uplink interference intensity of each resource block under the private network frequency band. Uplink update module 302 is used to mark each resource block with uplink interference intensity greater than demodulation performance threshold as a disabled resource block and generate an updated uplink resource bitmap. The downlink update module 303 is used to receive the downlink interference intensity of each resource block under the private network frequency band measured by each access terminal, mark each resource block with downlink interference intensity greater than the demodulation performance threshold as a disabled resource block, and generate an updated downlink resource bitmap. The first application module 304 is used to perform uplink and downlink scheduling on each access terminal according to the update cycle identifier and the updated uplink / downlink resource bitmap, and to send a resource bitmap update message carrying the updated uplink / downlink resource bitmap, update cycle identifier, and uplink / downlink resource identifier to the terminal via wireless broadcast; so that each access terminal can synchronously apply the updated uplink / downlink resource bitmap with the base station according to the uplink / downlink resource identifier and update cycle identifier to determine the frequency domain resource location of the transmitted / received data.

[0064] Figure 7 This invention provides a schematic diagram of an interference avoidance device for a private wireless network. The device corresponds to a terminal-side application and includes: The downlink interference measurement module 401 is used to perform downlink interference measurement within the measurement time slot of the current period according to the preset interference measurement time slot period, so as to obtain the downlink interference intensity of each resource block under the private network frequency band. The sending module 402 is used to upload the downlink interference intensity of each resource block to the network management platform, and forward it to the base station through the network management platform; so that the base station marks each resource block with downlink interference intensity greater than the demodulation performance threshold as a disabled resource block and generates an updated downlink resource bitmap; The second application module 403 is used to determine the frequency domain resource location of the transmitted data / received data when it detects a resource bitmap update message broadcast by the base station carrying the updated uplink / downlink resource bitmap, update cycle identifier, and uplink / downlink resource identifier, and synchronously applies the updated uplink / downlink resource bitmap with the base station based on the uplink / downlink resource identifier and update cycle identifier.

[0065] Specific limitations regarding interference avoidance devices for private wireless networks can be found in the above description of interference avoidance methods for private wireless networks, and will not be repeated here. Each module in the aforementioned interference avoidance device for private wireless networks can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the corresponding operations of each module.

[0066] The present invention also provides a computer-readable storage medium storing a computer program that can be used to execute the above-described... Figure 1 Interference avoidance methods provided for private wireless networks.

[0067] The present invention also provides Figure 8 The schematic diagram of the computer device shown is as follows: Figure 3 As shown, at the hardware level, this computer device includes a processor, internal bus, network interface, memory, and non-volatile memory, and may also include other hardware required for business operations. The processor reads the corresponding computer program from the non-volatile memory into memory and then executes it to achieve the above. Figure 1 Interference avoidance methods provided for private wireless networks.

[0068] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the methods described above. Any references to memory, storage, databases, or other media used in the embodiments provided by this invention can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical storage, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this invention.

Claims

1. An interference avoidance method under a private wireless network, characterized in that, The base station performs the following steps, including: According to the preset interference measurement time slot period, the uplink and downlink scheduling is stopped and uplink interference measurement is performed within the measurement time slot of the current period to obtain the uplink interference intensity of each resource block under the private network frequency band. Each resource block with uplink interference intensity greater than the demodulation performance threshold is marked as a disabled resource block, and an updated uplink resource bitmap is generated. Receive the downlink interference intensity of each resource block under the private network frequency band measured by each access terminal, mark each resource block with downlink interference intensity greater than the demodulation performance threshold as a disabled resource block, and generate an updated downlink resource bitmap; Based on the update cycle identifier, the updated uplink / downlink resource bitmap is applied to perform uplink / downlink scheduling for each access terminal, and a resource bitmap update message carrying the updated uplink / downlink resource bitmap, update cycle identifier, and uplink / downlink resource identifier is sent to the terminal via radio broadcast. This enables each access terminal to synchronously apply the updated uplink / downlink resource bitmap with the base station based on the uplink / downlink resource identifier and update cycle identifier, and determine the frequency domain resource location for transmitting / receiving data.

2. The interference avoidance method under a private wireless network as described in claim 1, characterized in that, The step of applying the updated uplink resource bitmap / downlink resource bitmap to perform uplink and downlink scheduling for each access terminal based on the update cycle identifier specifically includes: The effective time of the updated uplink resource bitmap / downlink resource bitmap is determined based on the product of the update cycle identifier and the preset broadcast cycle and the terminal time offset. When the base station system time reaches the effective time, the application uses the updated uplink resource bitmap / downlink resource bitmap to perform uplink and downlink scheduling for each access terminal.

3. The interference avoidance method under a private wireless network as described in claim 1 or 2, characterized in that, The updated uplink / downlink resource bitmaps are used to schedule uplink and downlink traffic for each access terminal, specifically including: When receiving uplink data sent by the access terminal, the uplink data is received through the available physical resource blocks in the updated uplink resource bitmap; When sending downlink data to the access terminal, discontinuous physical resource blocks in the downlink resource bitmap are mapped to contiguous logical resource blocks, and downlink control information carrying the scheduling quantity and starting position information of the logical resource blocks is sent to the access terminal. This enables the terminal to determine the mapping relationship between physical resource blocks and logical resource blocks by applying the updated downlink resource bitmap, and to determine the physical frequency domain resource location of the received data based on the downlink control information.

4. The interference avoidance method under a private wireless network as described in claim 1, characterized in that, The method further includes: Based on the path loss measurement of the access terminals, the access terminals are grouped by distance, and the terminal grouping information is sent to each access terminal. The resource bitmap update message also includes a terminal group identifier; the step of enabling each access terminal to synchronize and apply the updated downlink resource bitmap with the base station based on the uplink and downlink resource identifiers and the update cycle identifier specifically includes: When each access terminal determines that it falls into the terminal group corresponding to the resource bitmap update message based on the terminal group identifier, it synchronously applies the updated downlink resource bitmap with the base station based on the uplink and downlink resource identifiers and the update cycle identifier.

5. An interference avoidance method under a private wireless network, characterized in that, The terminal performs the following steps, including: According to the preset interference measurement time slot period, downlink interference measurement is performed within the measurement time slot of the current period to obtain the downlink interference intensity of each resource block under the private network frequency band. The downlink interference intensity of each resource block is uploaded to the network management platform and forwarded to the base station through the network management platform; the base station marks each resource block with downlink interference intensity greater than the demodulation performance threshold as a disabled resource block and generates an updated downlink resource bitmap; When a resource bitmap update message carrying the updated uplink / downlink resource bitmap, update cycle identifier, and uplink / downlink resource identifier is received from the base station, the updated uplink / downlink resource bitmap is applied synchronously with the base station based on the uplink / downlink resource identifier and update cycle identifier to determine the frequency domain resource location for transmitting / receiving data.

6. The interference avoidance method under a private wireless network as described in claim 5, characterized in that, The step of synchronously applying the updated uplink resource bitmap / downlink resource bitmap with the base station based on the uplink / downlink resource identifier and update cycle identifier specifically includes: The effective time of the updated uplink resource bitmap / downlink resource bitmap is determined based on the product of the update cycle identifier and the preset broadcast cycle and the terminal time offset. When the terminal system time reaches the effective time, the updated uplink resource bitmap / downlink resource bitmap is applied synchronously with the base station based on the uplink and downlink resource identifiers.

7. The interference avoidance method under a private wireless network as described in claim 5, characterized in that, The determination of the frequency domain resource location for transmitted / received data specifically includes: When uplinking data is uploaded to the base station, the uplink data is uploaded through the available physical resource blocks in the updated uplink resource bitmap; When receiving downlink data sent by the base station, receive downlink control information sent by the base station carrying the scheduling quantity and starting position information of logical resource blocks; By applying the updated downlink resource bitmap, discontinuous physical resource blocks in the downlink resource bitmap are mapped to contiguous logical resource blocks, and the physical frequency domain resource location of the received data is determined based on the downlink control information.

8. The interference avoidance method under a private wireless network as described in claim 5, characterized in that, The resource bitmap update message also includes a terminal group identifier; The step of synchronously applying the updated downlink resource bitmap with the base station based on the uplink and downlink resource identifiers and the update cycle identifier specifically includes: When a terminal determines that it falls into the terminal group corresponding to the resource bitmap update message based on the terminal group identifier, it applies the updated downlink resource bitmap in sync with the base station based on the uplink and downlink resource identifiers and the update cycle identifier.

9. An interference avoidance device for a private wireless network, characterized in that, include: The uplink interference measurement module is used to stop uplink and downlink scheduling and perform uplink interference measurement within the measurement time slot of the current period according to the preset interference measurement time slot period, so as to obtain the uplink interference intensity of each resource block under the private network frequency band. The uplink update module is used to mark each resource block with uplink interference intensity greater than the demodulation performance threshold as a disabled resource block and generate an updated uplink resource bitmap. The downlink update module is used to receive the downlink interference intensity of each resource block under the private network frequency band measured by each access terminal, mark each resource block with downlink interference intensity greater than the demodulation performance threshold as a disabled resource block, and generate an updated downlink resource bitmap. The first application module is used to perform uplink and downlink scheduling on each access terminal according to the update cycle identifier and the updated uplink / downlink resource bitmap, and to send a resource bitmap update message carrying the updated uplink / downlink resource bitmap, update cycle identifier, and uplink / downlink resource identifier to the terminal via wireless broadcast. Each access terminal, based on the uplink / downlink resource identifier and update cycle identifier, synchronously applies the updated uplink / downlink resource bitmap with the base station to determine the frequency domain resource location for transmitting / receiving data.

10. An interference avoidance device for a private wireless network, characterized in that, include: The downlink interference measurement module is used to perform downlink interference measurement within the measurement time slot of the current period according to the preset interference measurement time slot period, so as to obtain the downlink interference intensity of each resource block under the private network frequency band. The sending module is used to upload the downlink interference intensity of each resource block to the network management platform, and then forward it to the base station through the network management platform; The base station marks each resource block with downlink interference intensity greater than the demodulation performance threshold as a disabled resource block, and generates an updated downlink resource bitmap. The second application module is used to determine the frequency domain resource location of the transmitted data / received data when it detects a resource bitmap update message broadcast by the base station, which carries the updated uplink / downlink resource bitmap, update cycle identifier, and uplink / downlink resource identifier. The updated uplink / downlink resource bitmap is applied synchronously with the base station based on the uplink / downlink resource identifier and update cycle identifier.

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