Control system of mobile radio station

Abstract

The invention provides a control system of a mobile radio station, which is characterized in that a starting state machine is arranged in an ad hoc network and network access management module, the starting state machine is triggered to execute a channel scanning mechanism and a network discovery mechanism according to a power-on instruction, and networking state updating of the starting state machine is triggered according to scanning and discovery results; corresponding channel connection and networking operation are executed according to the networking state; the talkback and multicast control module is used for managing communication sessions among network nodes, creating and managing a plurality of independent audio and video multicast groups, and dynamically adjusting time slot distribution or code word distribution of each multicast group according to the network load condition; and the link information synchronization module is used for collecting, processing and synchronizing link state information among the nodes in the network, and broadcasting link update information to the nodes in the network in a multicast mode. According to the invention, the network access time of the mobile equipment can be obviously shortened, and multimedia communication of large-scale nodes can be effectively supported in a same-frequency environment.

Description

Technical Field

[0001] The present invention belongs to the technical field of wireless communications and relates to a mobile radio control system applied in mobile scenarios, which has fast self-organizing networking capability and high-density node multimedia communication function in a same-frequency environment. Background Art

[0002] In the field of mobile communications, mobile radios play a vital role, especially in scenarios requiring rapid deployment and flexible networking, such as public safety, emergency communications, and field operations. Users expect their devices to quickly and automatically access the communication network while on the move and to be able to conduct efficient multimedia communications with other nodes.

[0003] However, the mobile stations in the prior art have the following significant problems:

[0004] Difficulty in quickly and automatically connecting mobile devices to the network: Many existing mobile radios require a complex network search, identity authentication, and parameter configuration process after powering on before they can connect to the network. Even with ad hoc networking support, the network discovery, topology establishment, and node joining processes often take a long time (potentially exceeding 30 seconds), are not highly automated, and often require manual intervention. This slow response time is particularly important for mobile applications that require establishing a communication link in a short period of time (for example, emergency personnel quickly establishing communication at an accident site), severely impacting work efficiency and emergency response capabilities.

[0005] Limited ability to support large-scale multimedia communications among nodes in a co-frequency environment: To simplify spectrum management or meet specific application requirements, it is sometimes necessary to deploy a large number of mobile radios within the same frequency band. However, in a co-frequency environment, existing systems face significant challenges in supporting multimedia communications such as audio and time-frequency intercoms among multiple nodes simultaneously. Due to limited spectrum resources, nodes are prone to mutual interference, resulting in reduced communication quality, increased packet loss, and even communication interruptions. Furthermore, the resource scheduling and anti-interference mechanisms of existing systems are often insufficient to support large-scale nodes stably conducting multiple groups of audio and time-frequency intercoms under co-frequency conditions, making it difficult to meet the needs of collaborative communications in complex scenarios.

[0006] Therefore, there is an urgent need for an improved mobile radio control system that can significantly shorten the network access time of mobile devices and effectively support multimedia communications of large-scale nodes in a same-frequency environment. This is a problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0007] In order to solve the problems in the above-mentioned prior art that mobile devices have difficulty in quickly and automatically joining the network and have limited ability to support large-scale node multimedia communications in the same frequency environment, the present invention provides a mobile radio control system with fast self-organizing network and same-frequency multi-node multimedia communication capabilities.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] The present invention discloses a control system for a mobile station, comprising: a self-organizing network and network access management module, a talkback and multicast control module and a link information synchronization module; wherein,

[0010] The self-organizing network and network access management module has a built-in startup state machine, which stores the networking status. The startup state machine is triggered to execute the channel scanning mechanism and network discovery mechanism according to the power-on instruction, and the networking status of the startup state machine is updated according to the scanning and discovery results; and the corresponding channel connection and networking operations are executed according to the networking status;

[0011] Intercom and multicast control module, used to manage communication sessions between network nodes, create and manage multiple independent audio and video multicast groups, and dynamically adjust the time slot allocation or codeword allocation of each multicast group according to the network load;

[0012] The link information synchronization module is used to collect, process and synchronize link status information between nodes in the network, and broadcast link update information to nodes in the network through multicast.

[0013] Preferably, the self-organizing network and network access management module collects and stores network topology information. When the networking operation is completed, the network topology information is updated and the resource reservation protocol is started; the resource reservation protocol uses the collected network topology information to identify potential communication hotspots and allocate a preset range of time and frequency resources to the communication hotspots to form a pre-allocated resource pool.

[0014] Preferably, the self-organizing network and network access management module collects the network topology information through network discovery and neighbor detection mechanisms, and the network topology information at least includes:

[0015] A unique identifier for each node;

[0016] Direct connection relationship between nodes;

[0017] An indication of the signal strength or link quality of a node.

[0018] Preferably, the step of forming a pre-allocated resource pool by the self-organizing network and the network access management module includes:

[0019] Abstract the available frequency bands and available time into a resource grid with time-frequency blocks as the smallest unit;

[0020] Based on the identified communication hotspots, one or more of the following resource reservation strategies are implemented:

[0021] Divide the network space to be connected into logical areas based on geographical location or node clustering, and allocate several time-frequency blocks to the logical areas where communication hotspots are located;

[0022] Assign a time-frequency block to the only node in the communication hotspot for priority use when communicating with neighboring nodes;

[0023] Mark the priority of the time-frequency block and call the time-frequency block of the corresponding priority according to the communication load detected by the intercom and multicast control module.

[0024] Preferably, the step of allocating a number of time-frequency blocks to the logical area where the communication hotspot is located by the self-organizing network and network access management module includes:

[0025] A resource allocation table is maintained to record time-frequency block information;

[0026] The time-frequency block information to be allocated is broadcast to corresponding nodes in the network through network control signaling; the time-frequency block information broadcast by the network control signaling includes the position, size or priority of the allocated time-frequency block.

[0027] When the current communication node is the communication hotspot, the network control signaling is sent to the current communication node so that the current communication node can parse the allocated time-frequency block information to establish a communication link.

[0028] Preferably, the network discovery mechanism includes a network entry mechanism: a networked mobile station announces its existence as a network node by broadcasting a message containing a set prefix, and other mobile stations monitor and process the message containing the set prefix to discover neighbors.

[0029] Preferably, the network discovery mechanism includes a self-organizing network mechanism: if the message with the set prefix is not heard, the node competes to become the master node according to preset rules, and broadcasts a network establishment message for other nodes to respond and join as slave nodes to form an initial network topology.

[0030] Preferably, the intercom and multicast control module monitors the data flow in the link, the node packet sending priority and the number of frames to be sent, and dynamically adjusts the time slot allocation table based on the time division multiple access protocol.

[0031] Preferably, the link information synchronization module includes:

[0032] Link status information collector, used to obtain real-time link status information of each node from the self-organizing network and network access management module;

[0033] a multicast synchronization engine for receiving multicast group information from the intercom and multicast control module, encapsulating link status information into multicast packets based on the link information type and update frequency to be synchronized, and sending the multicast packets to all multicast group nodes that have subscribed to the link information using a multicast mechanism at the network layer or link layer;

[0034] The information synchronization policy controller is used to determine the triggering timing, update frequency, information granularity (detailed / summary) and multicast group used for link information synchronization.

[0035] Preferably, the self-organizing network and network access management module sets the working frequency band to be adjustable from 1.2GHz to 1.5GHz with a step of no more than 1Mhz, and manages the networking of a maximum of 64 nodes under the same frequency condition.

[0036] It can be seen from the above technical solutions that, compared with the prior art, the beneficial effects of the present invention include:

[0037] Through its built-in startup state machine, channel scanning, and network discovery mechanisms, the system rapidly responds to power-on commands and automatically completes network establishment or joins an existing network. A clear network discovery mechanism (based on broadcast messages with specific prefixes) and a self-organizing network mechanism (competing for master nodes) simplify network discovery and initialization, reducing the complexity of node access. Support for an adjustable frequency band from 1.2 GHz to 1.5 GHz (in steps of ≤ 1 MHz) and networking capabilities for up to 64 nodes provides flexible deployment options and network scalability.

[0038] The intercom and multicast control module of the present invention can manage multiple independent audio and video multicast groups to meet the communication needs of multiple parties. The system can intelligently adjust the time slot allocation (e.g., based on TDMA protocols) or codeword allocation (e.g., affecting encoding rate or quality) for each communication session or audio and video intercom group based on real-time network load (monitoring data flow, node priority, number of frames to be sent, etc.), thereby optimizing bandwidth utilization and communication quality.

[0039] By collecting and storing network topology information (node identification, connection relationship, link quality), the present invention enables the system to perceive the network structure. Based on the topology information, potential communication hotspots are identified, and the resource reservation protocol is initiated to pre-allocate time and frequency resources to these hotspots to form a pre-allocated resource pool. This helps to ensure the communication needs of critical communications or high-load areas and avoid resource competition and congestion. The creation and management of pre-allocated resource pools (such as allocating time and frequency blocks by region, by node, and by priority) provides a more refined resource guarantee mechanism.

[0040] The link information synchronization module of the present invention is responsible for collecting, processing, and synchronizing link status information (such as signal strength and link quality) for each node in the network. Link update information is broadcast via multicast to ensure that nodes in the network can obtain the latest link status in a timely manner. This is crucial for dynamically adjusting routing, power control, resource allocation, and other aspects, helping to maintain network stability and efficiency.

[0041] In summary, this technical solution, through modular design, combines mechanisms such as self-organizing networking, dynamic resource allocation, resource reservation, and link state synchronization, aiming to realize a mobile radio control system that can be quickly deployed, flexibly expanded, efficiently utilize resources, and ensure communication quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only embodiments of the present invention. Those skilled in the art can also derive other drawings based on the provided drawings without inventive effort.

[0043] Figure 1 A block diagram of a control system for a mobile station provided by an embodiment of the present invention;

[0044] Figure 2 A flow chart showing the formation of a pre-allocated resource pool by the self-organizing network and the network access management module provided in an embodiment of the present invention;

[0045] Figure 3 A schematic diagram of the composition of a link information synchronization module provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] The embodiment of the present invention provides a control system for a mobile station, such as Figure 1 As shown, it includes: self-organizing network and network access management module, intercom and multicast control module and link information synchronization module; wherein,

[0048] The self-organizing and network access management module features a built-in boot state machine that stores the network status. Power-on triggers the boot state machine to execute channel scanning and network discovery mechanisms. Scanning and discovery results trigger network status updates in the boot state machine, which then executes corresponding channel connection and networking operations based on the network status. After powering up the device, the module automatically performs network scanning, neighbor discovery, network identity negotiation, topology establishment, and identification and joining of existing networks without manual intervention. By utilizing an optimized network discovery protocol, a simplified authentication process, and preset default network parameters, the total time from power-up to successful network access is less than 30 seconds.

[0049] Intercom and multicast control module, used to manage communication sessions between network nodes, create and manage multiple independent audio and video multicast groups, and dynamically adjust the time slot allocation or codeword allocation of each multicast group according to the network load;

[0050] The link information synchronization module is used to collect, process and synchronize link status information between nodes in the network, and broadcast link update information to nodes in the network through multicast.

[0051] This embodiment also includes a radio frequency transceiver unit and a baseband processing unit; wherein:

[0052] The RF transceiver unit is used to transmit and receive wireless signals in the 1.2GHz-1.5GHz frequency band, and its operating frequency can be discretely or continuously adjusted in steps of no more than 1MHz.

[0053] Baseband processing unit: performs baseband processing on received and transmitted signals, including modulation, demodulation, channel coding / decoding, etc.

[0054] In one embodiment, the startup state machine starts immediately after the device is powered on. This state machine includes states such as "Idle," "Network Scan," "Network Discovery," "Ad Hoc Network Establishment," and "Network Access Request / Response." In the "Network Scan" state, a discontinuous or fast frequency hopping scanning strategy is used, rather than the traditional continuous slow scanning, to shorten scanning time. Preset frequently used channels or the channel with the last successful connection are prioritized for scanning.

[0055] In one embodiment, the self-organizing network and network access management module collects and stores network topology information. When the networking operation is completed, the network topology information is updated and the resource reservation protocol is started. The resource reservation protocol uses the collected network topology information to identify potential communication hotspots and allocates a preset range of time and frequency resources to the communication hotspots to form a pre-allocated resource pool.

[0056] In one embodiment, the ad hoc network and network access management module collects network topology information through network discovery and neighbor detection mechanisms. The network topology information includes at least:

[0057] A unique identifier for each node;

[0058] Direct connection relationship between nodes;

[0059] An indication of the signal strength or link quality of a node.

[0060] In one embodiment, Figure 2 As shown, the steps of forming a pre-allocated resource pool between the self-organizing network and the network access management module include:

[0061] Abstract the available frequency bands and available time into a resource grid with time-frequency blocks as the smallest unit;

[0062] Based on the identified communication hotspots, one or more of the following resource reservation strategies are implemented:

[0063] Divide the network space to be connected into logical areas based on geographical location or node clustering, and allocate several time-frequency blocks to the logical areas where communication hotspots are located;

[0064] Assign a time-frequency block to the only node in the communication hotspot for priority use when communicating with neighboring nodes;

[0065] Mark the priority of the time-frequency block and call the time-frequency block of the corresponding priority according to the communication load detected by the intercom and multicast control module.

[0066] In one embodiment, the step of allocating a number of time-frequency blocks to the logical area where the communication hotspot is located by the self-organizing network and network access management module includes:

[0067] A resource allocation table is maintained to record time-frequency block information;

[0068] The time-frequency block information to be allocated is broadcast to corresponding nodes in the network through network control signaling; the time-frequency block information broadcast by the network control signaling includes the position, size or priority of the allocated time-frequency block.

[0069] When the current communication node is a communication hotspot, network control signaling is sent to the current communication node for the current communication node to parse the allocated time-frequency block information to establish a communication link.

[0070] In one embodiment, the network discovery mechanism includes a network entry mechanism: a mobile station that has been networked announces its existence as a network node by broadcasting a message containing a set prefix, and other mobile stations listen to and process the message containing the set prefix to discover neighbors.

[0071] In one embodiment, the network discovery mechanism includes a self-organizing network mechanism: if no message with a set prefix is heard, the node competes to become the master node according to preset rules (such as MAC address size, signal strength, random competition, etc.), and broadcasts a network establishment message for other nodes to respond and join as slave nodes, thereby forming an initial network topology.

[0072] In one embodiment, the intercom and multicast control module further includes a multi-session manager and a group manager:

[0073] The multi-session manager can independently create, maintain, and terminate multiple concurrent communication sessions (including point-to-point and multicast groups). The manager assigns a unique session identifier (SID) to each active session and tracks its status (e.g., establishing, active, paused, terminated).

[0074] The group manager is responsible for creating, configuring, and managing communication groups. Each group is assigned a unique group identifier (GID). The group manager maintains a list of group members and handles member join / exit requests. Both dynamic groups (with variable membership) and static groups (with fixed membership) are supported.

[0075] In one embodiment, the intercom and multicast control module monitors the data flow, node packet sending priority and the number of frames to be sent in the link, and dynamically adjusts the time slot allocation table based on the time division multiple access protocol.

[0076] The following describes the dynamic resource reservation and allocation process based on network topology:

[0077] During the rapid self-organizing network process, the self-organizing and network access management module is responsible not only for establishing the network but also for initially collecting network topology information (such as node IDs, approximate locations, and neighbor relationships). Once the network is initially formed or stabilized (for example, basic network formation is completed within 30 seconds after power-up), the self-organizing and network access management module initiates a rapid resource reservation protocol. This protocol uses the collected topology information to identify potential communication hotspots (for example, areas or nodes where multiple audio and video communications are expected to occur). The self-organizing and network access management module pre-allocates a portion of time-frequency resources (for example, specific time slots or subcarrier combinations) to these hotspot areas or nodes, forming a preliminary resource pool.

[0078] When initiating or processing audio or video intercom requests, the Intercom and Multicast Control Module first queries the pre-allocated resource pool provided by the Ad Hoc Network and Network Access Management Module. If suitable reserved resources exist, the Intercom and Multicast Control Module prioritizes them, significantly reducing resource request and conflict resolution time, thereby enabling rapid multimedia connection establishment in high-density nodes.

[0079] In one embodiment, Figure 3 As shown, the link information synchronization module includes:

[0080] Link status information collector, used to obtain real-time link status information of each node from the self-organizing network and network access management module;

[0081] The multicast synchronization engine receives multicast group information from the intercom and multicast control module, encapsulates the link status information into multicast packets based on the link information type and update frequency to be synchronized, and uses the multicast mechanism of the network layer (such as IPv4 / IPv6 multicast) or the link layer (such as IEEE 802.11 / 16 multicast function, if supported by the hardware) to send the multicast packets to all nodes in the multicast group that have subscribed to the link information.

[0082] The information synchronization policy controller is used to determine the triggering timing, update frequency, information granularity (detailed / summary) and multicast group used for link information synchronization.

[0083] In this embodiment, the multicast synchronization engine can also synchronize link information through memory backup:

[0084] Maintain one or more ring buffers in local memory to store snapshots of link state information over a recent period (e.g., the last N cycles or the last T seconds). Important link state information that needs to be backed up (such as neighbor lists and master-slave relationships) is backed up to a specific area of non-volatile memory (e.g., Flash) to prevent loss of critical network topology information after a system restart. Define backup trigger conditions (e.g., information updates, timing, system state changes) and implement logic for restoring link information from memory backups or non-volatile backups.

[0085] In one embodiment, the self-organizing network and network access management module sets the working frequency band to be adjustable from 1.2 GHz to 1.5 GHz, with a step of no more than 1 MHz.

[0086] In one embodiment, the intercom and multicast control module incorporates a resource scheduling algorithm and enhanced anti-interference mechanism for co-frequency multi-node environments. This algorithm dynamically allocates and manages limited spectrum resources to reduce interference between nodes; the anti-interference mechanism may include an adaptive frequency hopping strategy (within the permitted frequency band). This enables the system to manage networks of up to 64 nodes in co-frequency conditions.

[0087] The control system of the mobile station provided by the present invention is introduced in detail above. In this embodiment, specific examples are used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for general technical personnel in this field, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

[0088] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined in this embodiment may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown in this embodiment, but is intended to conform to the widest scope consistent with the principles and novel features disclosed in this embodiment.

Claims

1. A control system for a mobile station, characterized in that: include: Self-organizing network and network access management module, intercom and multicast control module and link information synchronization module; among them, The self-organizing network and network access management module has a built-in startup state machine, which stores the networking status. The startup state machine is triggered to execute the channel scanning mechanism and network discovery mechanism according to the power-on instruction, and the networking status of the startup state machine is updated according to the scanning and discovery results; and the corresponding channel connection and networking operations are executed according to the networking status; Intercom and multicast control module, used to manage communication sessions between network nodes, create and manage multiple independent audio and video multicast groups, and dynamically adjust the time slot allocation or codeword allocation of each multicast group according to the network load; The link information synchronization module is used to collect, process and synchronize link status information between nodes in the network, and broadcast link update information to nodes in the network through multicast.

2. A mobile station control system according to claim 1, characterized in that: The self-organizing network and network access management module collects and stores network topology information. When the networking operation is completed, the network topology information is updated and the resource reservation protocol is started. The resource reservation protocol uses the collected network topology information to identify potential communication hotspots and allocate a preset range of time and frequency resources to the communication hotspots to form a pre-allocated resource pool.

3. A mobile station control system according to claim 2, characterized in that: The self-organizing network and network access management module collects the network topology information through network discovery and neighbor detection mechanisms, and the network topology information includes at least: A unique identifier for each node; Direct connection relationship between nodes; An indication of the signal strength or link quality of a node.

4. A mobile station control system according to claim 2, characterized in that: The step of forming a pre-allocated resource pool by the self-organizing network and the network access management module includes: Abstract the available frequency bands and available time into a resource grid with time-frequency blocks as the smallest unit; Based on the identified communication hotspots, one or more of the following resource reservation strategies are implemented: Divide the network space to be connected into logical areas based on geographical location or node clustering, and allocate several time-frequency blocks to the logical areas where communication hotspots are located; Assign a time-frequency block to the only node in the communication hotspot for priority use when communicating with neighboring nodes; Mark the priority of the time-frequency block and call the time-frequency block of the corresponding priority according to the communication load detected by the intercom and multicast control module.

5. A mobile station control system according to claim 4, characterized in that: The step of allocating a number of time-frequency blocks to the logical area where the communication hotspot is located by the self-organizing network and network access management module includes: A resource allocation table is maintained to record time-frequency block information; The time-frequency block information to be allocated is broadcast to corresponding nodes in the network through network control signaling; the time-frequency block information broadcast by the network control signaling includes the position, size or priority of the allocated time-frequency block. When the current communication node is the communication hotspot, the network control signaling is sent to the current communication node so that the current communication node can parse the allocated time-frequency block information to establish a communication link.

6. A mobile station control system according to claim 1, characterized in that: The network discovery mechanism includes a network entry mechanism: a mobile station that has been networked announces its existence as a network node by broadcasting a message containing a set prefix, and other mobile stations listen to and process the message containing the set prefix to discover neighbors.

7. A mobile station control system according to claim 6, characterized in that: The network discovery mechanism includes an ad hoc network mechanism: if the message with the set prefix is not heard, the node competes to become the master node according to preset rules and broadcasts a network establishment message for other nodes to respond and join as slave nodes to form an initial network topology.

8. The control system of a mobile station according to claim 1, characterized in that: The intercom and multicast control module monitors the data flow, node packet sending priority and the number of frames to be sent in the link, and dynamically adjusts the time slot allocation table based on the time division multiple access protocol.

9. The control system of a mobile station according to claim 1, characterized in that: The link information synchronization module includes: Link status information collector, used to obtain real-time link status information of each node from the self-organizing network and network access management module; a multicast synchronization engine for receiving multicast group information from the intercom and multicast control module, encapsulating link status information into multicast packets based on the link information type and update frequency to be synchronized, and sending the multicast packets to all multicast group nodes that have subscribed to the link information using a multicast mechanism at the network layer or link layer; The information synchronization policy controller is used to determine the triggering timing, update frequency, information granularity (detailed / summary) and multicast group used for link information synchronization.

10. The control system of a mobile station according to claim 1, characterized in that: The self-organizing network and network access management module sets the working frequency band to be adjustable from 1.2GHz to 1.5GHz, with a step of no more than 1Mhz, and manages the networking of up to 64 nodes under the same frequency condition.

Images