One-call-one-response method in single-frequency digital repeater wireless communication systems

Abstract

This invention provides a one-call-one-response method for a single-frequency digital repeater wireless communication system. The one-call-one-response method includes the following steps: S1, call request initiation: the repeater initiates a call request to a handheld radio connected to the repeater; S2, parsing: the handheld radio connected to the repeater generates a corresponding parsing packet for the call request; S3, request frame generation: the repeater sends a omnicast request frame within a common frequency for other repeaters to receive; S4, receiving and forwarding the request frame; S5, surrounding link machine request processing; S6, sending a call response packet; S7, source link machine confirmation; S8, calling handheld radio confirmation; S9, call termination. This invention enables voice communication in a one-call-one-response mode between multiple repeaters, and simultaneously ensures the reliability of the voice communication link.

Description

Technical Field

[0001] This invention relates to the technical field of wireless communication technology, and in particular to a one-call-one-response method for a single-frequency digital repeater wireless communication system. Background Technology

[0002] In wireless communication, the communication range of a single terminal is very limited. The communication range can be increased by adding relay equipment to forward and enhance the signal.

[0003] The relay equipment is based on the DMR communication protocol and uses TDMA. It operates independently with a single frequency and dual time slots. However, as the number of relay stations increases, multi-relay voice communication becomes more complex than single-relay voice communication. Furthermore, the reliability of the voice communication link in multi-relay voice communication is relatively low in the existing technology.

[0004] Therefore, there is an urgent need to redesign a new one-call-one-response method for a single-frequency digital repeater wireless communication system to solve the above problems. Summary of the Invention

[0005] This invention provides a method for one-call-one-response in a single-frequency digital relay wireless communication system to solve the technical problems mentioned in the background art.

[0006] This invention provides a one-call-one-response method for a single-frequency digital repeater wireless communication system. The method includes the following steps: S1, Call request initiation: The repeater initiates a call request to a handheld radio connected to the repeater; S2, Parsing: The handheld radio connected to the repeater generates a corresponding parsing packet for the call request; S3, Request frame generation: The repeater sends a omnicast request frame within a common frequency for other repeaters to receive; S4, Request frame reception and forwarding: The source link machine of an adjacent node processes the request frame sent in step S3 according to its own state and forwards the request frame to surrounding link machines; S5, Surrounding link machine request processing: After receiving the request frame in step S4, all link machines receiving the request frame must parse it and determine the corresponding handheld radio. If the corresponding handheld device is connected to this link machine, then this link machine changes its own state to call response; S6, send a call response packet. The link machine whose own state has changed to call response in step S5 sends a call response packet outward, and the destination address of the call response packet is the previous hop address of the call request, so as to establish a complete link from the source link machine to the destination link machine; S7, source link machine confirmation. After receiving the call response frame of the call response packet, the source link machine confirms that the link has been established and can make a call; S8, call handheld device confirmation. The call handheld device displays that communication is possible and begins voice information transmission; S9, call ends. After the link machine sends the end information, the state of all link machines on the path changes to idle state. At this time, all link machines on the path can still receive call requests and call responses.

[0007] Optionally, the request frame in step S2 is a omnicast request, and the destination address of the request frame is the handheld radio serial number attached to different repeaters.

[0008] Optionally, if the link machine is in an idle state in step S4, the link machine parses the request frame type and changes the state of the link machine to request occupied.

[0009] Optionally, in step S4, the link machine forwards the request frame to the entire network to establish a path across the entire network.

[0010] Optionally, in step S6, once the complete link from the source link machine to the destination link machine is established, all other link machines are put into an idle state.

[0011] Optionally, in step S8, when multiple PTTs are pressed, if the call initiator receives a call request from any link device first, then that link device is allowed to make the call first, and the call requests from the other link devices are torn down; after the link device finishes its call, it continues to establish a session with other PTTs.

[0012] Optionally, in step S8, after the call ends, the link machine of the path node determines and changes its state to idle.

[0013] The beneficial effects of this invention are as follows:

[0014] The one-call-one-response method of the single-frequency digital repeater wireless communication system includes the following steps: S1, Call request initiation: The repeater initiates a call request to the handheld radio connected to the repeater; S2, Parsing: The handheld radio connected to the repeater generates a corresponding parsing packet for the call request; S3, Request frame generation: The repeater sends a omnicast request frame in the common frequency for other repeaters to receive; S4, Request frame reception and forwarding: The source link machine of the adjacent node processes the request frame sent in step S3 according to its own state and forwards the request frame to the surrounding link machines; S5, Surrounding link machine request processing: After receiving the request frame in step S4, each link machine that receives the request frame needs to parse it and determine whether the corresponding handheld radio is connected to its own link machine. If the corresponding handheld radio is connected to its own link machine, the link machine changes its own state to... Call Response; S6, Send Call Response Packet: The link machine whose state changes to call response in step S5 sends a call response packet outward, and the destination address of the call response packet is the previous hop address of the call request, so as to establish a complete link from the source link machine to the destination link machine; S7, Source Link Machine Confirmation: After receiving the call response frame of the call response packet, the source link machine confirms that the link has been established and can make a call; S8, Call Handheld Confirmation: The call handheld machine displays that communication is possible and begins voice information transmission; S9, Call End: After the link machine sends the end information, the state of all link machines on the path becomes idle. At this time, all link machines on the path can still receive call requests and call responses. In this invention, voice communication in a one-call-one-response mode between multiple repeaters is realized. At the same time, this invention can ensure the reliability of the voice communication link. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a flowchart illustrating the single-call, single-response method of the single-frequency digital relay wireless communication system provided by the present invention.

[0017] Figure 2 This is a schematic diagram of an embodiment of the one-call-one-response method of the single-frequency digital relay wireless communication system provided by the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are only for explaining the present invention and not for limiting the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] Please see Figures 1 to 2 The single-call, single-response method of the single-frequency digital repeater wireless communication system of the present invention includes the following steps: S1, call request initiation: the repeater initiates a call request to the handheld radio connected to the repeater; S2, parsing: the handheld radio connected to the repeater generates a corresponding parsing packet for the call request; S3, request frame generation: the repeater sends a omnicast request frame in the common frequency for other repeaters to receive; S4, request frame reception and forwarding: the source link machine of the adjacent node processes the request frame sent in step S3 according to its own state and forwards the request frame to the surrounding link machines; S5, surrounding link machine request processing: after receiving the request frame in step S4, all link machines that receive the request frame need to parse it and determine whether the corresponding handheld radio is connected to their link machine. If the corresponding handheld device is attached to this link device, then this link device changes its own state to call response; S6, send a call response packet. The link device whose own state has changed to call response in step S5 sends a call response packet outward, and the destination address of the call response packet is the previous hop address of the call request, so as to establish a complete link from the source link device to the destination link device; S7, source link device confirmation. After receiving the call response frame of the call response packet, the source link device confirms that the link has been established and can make a call; S8, call handheld device confirmation. The call handheld device displays that communication is possible and begins voice information transmission; S9, call end. After the link device sends the end information, the state of all link devices on the path changes to idle state. At this time, all link devices on the path can still receive call requests and call responses.

[0021] Specifically, see the appendix. Figure 2The working process of the single-call-single-response method of the single-frequency digital relay wireless communication system of the present invention is described in detail.

[0022] Suppose that the handheld device connected to device 2 intends to call other handheld devices. This handheld device is connected to device 6 on the link. When the handheld device connected to device 2 actually initiates a network-wide call, the link from device 2 to device 6 is established and fully occupied.

[0023] Press PTT to start creating a private path:

[0024] The handheld radio connected to No. 2 initiates a call request. The channel for sending this call request is F2-S1. The link unit No. 2 determines whether it is a one-way call or a multi-way call based on the call request. If it is a one-way call, it parses the target handheld radio to obtain the address of the destination link unit and determines whether it is a handheld radio connected to itself. If it is, it changes to the "local relay" state. If it is not, it continues to broadcast and forward the request frame.

[0025] Upon receiving this call request packet, all link machines in the network need to parse the handheld device information contained in the packet to determine whether it is a handheld device connected to their link machine. Finally, link machine number 6, upon receiving this request frame, determines that the calling handheld device is connected to it, so it changes its state to "call relay" and initiates a call response. The call response then begins to travel along the previous hop address to link machine number 2. All nodes along this path need to change their state to "call relay," thus establishing a complete link from node number 2 to node number 6, which is then fully occupied. At this point, the link machines on this link no longer receive other signals.

[0026] After receiving the call response frame, No. 2 begins to allow the handheld radio to send voice signals. At this point, the handheld radios connected to No. 2 and No. 6 can communicate independently until the voice ends. After receiving the voice reception frame, the passing node changes its state to idle.

[0027] In this embodiment, the request frame in step S2 is a omnicast request, and the destination address of the request frame is the serial number of the handheld radio attached to different repeaters.

[0028] The handheld radio serial number can be multiple, such as 1, 2, 3, 4, etc., and the request frame is broadcast to ensure that as many handheld radios as possible receive the request frame.

[0029] In this embodiment, if the link machine is in an idle state in step S4, the link machine parses the request frame type and changes the state of the link machine to request occupied.

[0030] This is aimed at improving the ability of each link machine to maintain reasonable and normal operation.

[0031] In this embodiment, in step S4, the link machine forwards the request frame to the entire network to establish a path across the entire network.

[0032] Among them, the method for improving the one-call-one-response quality of the voice communication link in the single-frequency digital relay wireless communication system of the present invention.

[0033] In this embodiment, after the complete link from the source link machine to the destination link machine is established in step S6, all other link machines are put into an idle state.

[0034] This is to ensure that the various link machines can operate without interfering with each other.

[0035] In this embodiment, in step S8, when multiple PTTs are pressed, if the call initiator receives a call request from any link device first, then that link device is allowed to make the call first, and the call requests from the other link devices are torn down; after the link device finishes its call, it continues to establish a session with other PTTs.

[0036] In this embodiment, after the call ends in step S8, the link machine of the path node determines and changes its state to idle.

[0037] This is to ensure the rational utilization of resources among multiple link machines.

[0038] The one-call-one-response method of the single-frequency digital repeater wireless communication system includes the following steps: S1, Call request initiation: The repeater initiates a call request to the handheld radio connected to the repeater; S2, Parsing: The handheld radio connected to the repeater generates a corresponding parsing packet for the call request; S3, Request frame generation: The repeater sends a omnicast request frame in the common frequency for other repeaters to receive; S4, Request frame reception and forwarding: The source link machine of the adjacent node processes the request frame sent in step S3 according to its own state and forwards the request frame to the surrounding link machines; S5, Surrounding link machine request processing: After receiving the request frame in step S4, each link machine that receives the request frame needs to parse it and determine whether the corresponding handheld radio is connected to its own link machine. If the corresponding handheld radio is connected to its own link machine, the link machine changes its own state to... Call Response; S6, Send Call Response Packet: The link machine whose state changes to call response in step S5 sends a call response packet outward, and the destination address of the call response packet is the previous hop address of the call request, so as to establish a complete link from the source link machine to the destination link machine; S7, Source Link Machine Confirmation: After receiving the call response frame of the call response packet, the source link machine confirms that the link has been established and can make a call; S8, Call Handheld Confirmation: The call handheld machine displays that communication is possible and begins voice information transmission; S9, Call End: After the link machine sends the end information, the state of all link machines on the path becomes idle. At this time, all link machines on the path can still receive call requests and call responses. In this invention, voice communication in a one-call-one-response mode between multiple repeaters is realized. At the same time, this invention can ensure the reliability of the voice communication link.

[0039] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for one-call-one-response communication in a single-frequency digital repeater wireless communication system, characterized in that, Includes the following steps: S1. Call request initiated: The repeater initiates a call request to the handheld radio attached to the repeater. S2. Parsing: The handheld radio connected to the repeater generates a corresponding parsing packet for the call request; S3. A request frame is generated. The repeater sends a omnicast request frame in the common frequency for other repeaters to receive. S4. Receiving and forwarding the request frame: The link machine of the adjacent node processes the request frame sent in step S3 according to its own state and forwards the request frame to the surrounding link machines. S5. Request processing of surrounding link machines: After receiving the request frame in step S4, all link machines that receive the request frame need to parse it and determine whether the corresponding handheld device is attached to this link machine. If the corresponding handheld device is attached to this link machine, this link machine changes its own status to call response. S6. Send a call response packet. The link machine whose state has changed to call response in step S5 sends a call response packet to the outside, and the destination address of the call response packet is the previous hop address of the call request, so as to establish a complete link from the source link machine to the destination link machine. S7. Source link machine confirmation: After receiving the call response frame of the call response packet, the source link machine confirms that the link has been established and a call can be made, and fully occupies this link. S8. Call handheld confirmation: The handheld device displays that communication is possible and begins voice message transmission; S9. Call ends. After the link machine sends the end information, the link machine status on all paths becomes idle. At this time, the link machine on all paths can still receive call requests and call responses, and a complete communication process ends.

2. The method for one-call-one-response in a single-frequency digital repeater wireless communication system according to claim 1, characterized in that, The request frame in step S2 is a omnicast request, and the destination address of the request frame is the serial number of the handheld radio attached to different repeaters.

3. The method for one-call-one-response in a single-frequency digital repeater wireless communication system according to claim 1, characterized in that, If the link machine is in an idle state in step S4, the link machine parses the request frame type and changes the state of the link machine to request occupied.

4. The method for one-call-one-response in a single-frequency digital repeater wireless communication system according to claim 1, characterized in that, In step S4, the link machine forwards the request frame to the entire network to establish a path across the entire network.

5. The method for one-call-one-response in a single-frequency digital repeater wireless communication system according to claim 1, characterized in that, In step S6, once the complete link from the source link machine to the destination link machine is established, all other link machines will become idle.

6. The method for one-call-one-response in a single-frequency digital repeater wireless communication system according to claim 1, characterized in that, In step S8, when multiple PTTs are pressed, if the call initiator receives a call request from any link device first, then that link device is allowed to make the call first, and the call requests from other link devices are torn down; after the link device finishes its call, it continues to establish a session with other PTTs.

7. The method for one-call-one-response in a single-frequency digital repeater wireless communication system according to claim 1, characterized in that, In step S8, after the call ends, the link machine of the path node determines and changes its state to idle.

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