Repeater status definition and transfer method for single-frequency digital relay wireless communication system

Abstract

The present invention provides a method for defining and transferring the state of a repeater in a single-frequency digital relay wireless communication system. The method comprises the following steps: S1, link machine state setting; S2, scanning gap determination; S3, link machine receiving time slots and forwarding; S4, link machine call request forwarding; S5, link machine call request processing; S6, path establishment completion. When the link machine initiating the call in step S5 receives a send response, the path establishment is completed, and the link machines on all paths are in a cross-machine transfer state. After the link is established, the link machines in all links are occupied. The present invention describes the state information of each single-frequency digital wireless repeater, and can be applied to wireless networking instances of single-frequency digital wireless repeaters without adding other states. Moreover, the present invention can be used in self-organizing networking solutions of single-frequency digital wireless repeaters in any state, with a wide range of applicability and strong portability.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communication technology, and in particular to a repeater status definition and transfer method of a single-frequency digital repeater wireless communication system. Background Art

[0002] In wireless communications, 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, adopts the TDMA mode, and operates independently on a single frequency and dual time slots. As the number of relay stations increases, adjacent nodes of the original multiple relay stations may collide during the voice information forwarding process, and the voice communication link cannot be established.

[0004] Therefore, there is an urgent need to redesign a new repeater station status definition and transfer method for a single-frequency digital relay wireless communication system to solve the above problems. Summary of the Invention

[0005] The present invention provides a repeater status definition and transfer method for a single-frequency digital relay wireless communication system to solve the technical problems raised in the above background technology.

[0006] The present invention provides a method for defining and transferring the state of a repeater in a single-frequency digital relay wireless communication system. The method comprises the following steps: S1, link machine state setting, wherein the source link machine sets the following working states: idle, local relay, request occupation, call answering, and cross-machine relay; S2, scanning gap determination, wherein when in the communication phase, all link machines will determine the scanning time slot according to the local state; wherein, in step S2, if the link machine is in the cross-machine relay state, all repeaters are in the fixed transceiver state; if the link machine is in the idle state, When the link machine receives the local hand-held station request in the receiving time slot, if a call is required, it sends a call request in the next sending time slot. If it is a single call, the packet should include the link machine information corresponding to the target hand-held station. If it is an all-call, the call request destination address can be set to all-call. S4, link machine call request forwarding. When the link machine in step S3 receives the call request, it first determines whether it is a local call based on the destination address. If it is, it sends a call request in the next sending time slot. The link machine immediately sends a call response in the first sending time slot, sets the local state to the local transit state, and switches to the frequency of the source address link machine to receive data; if not, a waiting time will be set according to the received signal strength. When the waiting time expires, the link machine forwards the call request; S5, link machine call request processing, after the link machine in step S4 forwards the call request, the link machine is in the request occupation state, the link machine sends a link occupation signal, and prompts the local hand-held station to exit power saving, prepare to receive signals, and stop the local hand-held station from transmitting signals; if there is a function of transmission interruption and forced demolition, only higher priority ones are allowed at this time The terminal at the next level forcibly inserts or disconnects the call that is about to be established on this line. When the destination link machine receives the request and responds, it switches to the call answering state when passing through this link machine again. After forwarding the response, it enters the cross-machine transfer state and waits at the upper-level frequency point; S6, the path establishment is completed. When the link machine that initiated the call in step S5 receives the send response, the path establishment is completed. The link machines on all paths are in the cross-machine transfer state. After the link is established, the link machines in all links are occupied until the sending end message is received from the initiating link machine. At this time, the link machine status on all paths changes to idle.

[0007] Optionally, in step S2, when the link machine is in the cross-machine transfer state, except for the repeater to which the call originates, which is receiving the local frequency Fi-S1 / S2 and transmitting Fi-S2 / S1, other repeaters all receive the upper-level frequency Fn-S1 / S2 and transmit Fi-S2 / S1.

[0008] Optionally, in step S2, when the link machine is in an idle state, the local beacon is used for field strength scanning for terminal roaming. The F0 beacon is used for link maintenance and routing field strength determination.

[0009] Optionally, in step S3, the link machine sends a call request at f0.

[0010] Optionally, in step S3, the link machine information corresponding to the target mobile station includes the destination link machine address that the local link machine should parse based on the destination mobile station.

[0011] Optionally, in step S1, when the source link machine is in an idle state, the link machine stops working and can forward data from other link machines as well as data from downlink handsets. At this time, the listening frequency of the link machine is F0,Fi and the transmitting frequency is F0.

[0012] Optionally, in step S1, when the source link machine is in the local transit state, the source link machine serves the local mobile phone, and when the local mobile phone initiates a call and the call object is also another local mobile phone, it enters the local transit state from the idle state. At this time, the local link machine does not forward data to the adjacent point link machine, nor does it need the adjacent point to transit data, and the link machine's listening frequency is Fi, and the transmitting frequency is Fi.

[0013] Optionally, in step S1, when the source link machine is in the request occupation state, it is used for the initiation phase of establishing the call path. After receiving the call request from other relay stations, it first sends a link occupation signal at the fi frequency point, prompting the local mobile station to exit power saving and not allowing the local mobile station to transmit signals. Then it changes from the idle state to the request occupation state. At this time, it will not be able to detect the call request of the local mobile station with a higher priority, and only relays the call request to other link machines. At this time, the link machine only listens to the F0 frequency point, and the transmitting frequency point is F0.

[0014] Optionally, in step S1, when the source link machine is in a call answering state, the answering stage for establishing the call path is transient; first, it is distinguished whether it is a unicast or full-cast answer according to the answer type; when in the unicast state: after F0 receives the unicast call answering, the link machine changes from the request occupation state to the call answering state, at which time the call path begins to be established, and the path is obtained according to the route in the call answering. The call answer is forwarded at F0, and then it is switched to the cross-machine transit state, waiting for the input of voice data; when in the full-cast state: when the link machine receives the full-cast call answering, it changes from the request occupation state to the answering state, at which time the call path begins to be established, which is different from the unicast. In addition to broadcasting the full-cast answer at F0, since the call answer has no path information at this time, an additional source node information will be recorded, and the path to the source node is determined by comparing the routing table, thereby determining the upper-level frequency point that it needs to wait for, and then switching to the cross-machine transit state, waiting for the input of voice data.

[0015] Optionally, in step S1, when the source link machine is in the cross-level transit state, it is used to complete the forwarding of voice data after the path is established. At this time, each link machine on the path is in the cross-machine transit state, and each link machine waits at the upper-level frequency point to wait for receiving voice data, and the destination node waits at the Fi frequency point to wait for data transmitted from the local mobile phone. The transmitting frequency point is Fi.

[0016] The beneficial effects of the present invention are as follows:

[0017] The repeater state definition and transfer method of the single-frequency digital relay wireless communication system includes the following steps: S1, link machine state setting; S2, scanning gap determination; S3, link machine receiving time slot and forwarding; S4, link machine call request forwarding; S5, link machine call request processing; S6, path establishment completion. When the link machine initiating the call in step S5 receives the sending response, the path establishment is completed, and the link machines on all paths are in the cross-machine transfer state. After the link is established, the link machines in all links are occupied until the sending end message is received from the initiating link machine. At this time, the link machine state on all paths is changed to idle. Among them, the present invention describes the various state information of the single-frequency digital wireless repeater, and there is no need to add other states. It can be applied to the wireless networking instance of the single-frequency digital wireless repeater. Moreover, the present invention can be used for the self-organizing networking solution of the single-frequency digital wireless repeater in any state, with a wide range of applicability and strong portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 The present invention provides a state transition diagram of a repeater station state definition and a state transition method for a single-frequency digital repeater wireless communication system. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It will be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, not all structures, are shown in the drawings. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0021] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] See also Figure 1 The method for defining and transferring repeater states in a single-frequency digital relay wireless communication system of the present invention includes the following steps: S1, link machine state setting, in which the source link machine sets the following working states: idle, local relay, request occupation, call answering, and inter-machine relay; S2, scanning interval determination, in which, when in the communication phase, all link machines determine the scanning time slot based on the local state; wherein, in step S2, if the link machine is in the inter-machine relay state, all repeaters are in a fixed transceiver state; if the link machine is in the idle state, all repeaters need to scan the local frequency points Fi and F0 , and transmit local beacons Fi and F0 beacons; S3, link machine receives time slot and forwards. When the link machine receives a local handset request in the receiving time slot, if a call is required, it sends a call request in the next sending time slot. If it is a single call, the packet should include the link machine information corresponding to the target handset. If it is an all-call, the call request destination address can be set to all-broadcast; S4, link machine call request forwarding. When the link machine in step S3 receives a call request, it first determines whether it is a local call based on the destination address; if so, it immediately sends a call response in the next sending time slot. And set the local state to the local transfer state, switch to the frequency of the source address link machine to receive data; if not, set a waiting time according to the received signal strength, and when the waiting time expires, the link machine forwards the call request; S5, link machine call request processing, after the link machine in step S4 forwards the call request, the link machine is in the request occupation state, the link machine sends a link occupation signal, and prompts the local handheld station to exit power saving, prepare to receive signals, and stop the local handheld station from transmitting signals; if there is a function of transmission interruption and forced demolition, only terminals with higher priority are allowed to force insertion or The call that is about to be established on this path is forcibly terminated. When the destination link machine receives the request and responds, it switches to the call answering state when passing through this link machine again. After forwarding the response, it enters the cross-machine transfer state and waits at the upper-level frequency point; S6, the path establishment is completed. When the link machine that initiated the call in step S5 receives the send response, the path establishment is completed. The link machines on all paths are in the cross-machine transfer state. After the link is established, the link machines in all links are occupied until the sending end message is received from the initiating link machine. At this time, the link machine status on all paths changes to idle.

[0023] Specifically, in step S2, when the link machine is in the cross-machine transfer state, except for the repeater to which the call originates, which is receiving the local frequency Fi-S1 / S2 and transmitting Fi-S2 / S1, other repeaters all receive the upper-level frequency Fn-S1 / S2 and transmit Fi-S2 / S1.

[0024] In this embodiment, in step S2, when the link machine is in an idle state, the local beacon is used for field strength scanning for terminal roaming, and the F0 beacon is used for link maintenance and routing field strength determination.

[0025] In this embodiment, in step S3, the link machine sends a call request at f0.

[0026] In this embodiment, in step S3, the link machine information corresponding to the target mobile station includes the target link machine address that the local link machine should parse based on the target mobile station.

[0027] In this embodiment, in step S1, when the source link machine is in an idle state, the link machine stops working. The link machine can forward data from other link machines as well as data from downlink handsets. At this time, the listening frequency of the link machine is F0,Fi, and the transmitting frequency is F0.

[0028] In this embodiment, in step S1, when the source link machine is in the local transfer state, the source link machine serves the local mobile phone. When the local mobile phone initiates a call and the call object is also another local mobile phone, it enters the local transfer state from the idle state. At this time, the local link machine does not forward data to the adjacent point link machine, nor does it need the adjacent point to transfer data. The listening frequency of the link machine is Fi, and the transmitting frequency is Fi.

[0029] In this embodiment, in step S1, when the source link machine is in the request occupation state, which is used for the initiation phase of establishing a call path, after receiving a call request from another relay station, it first sends a link occupation signal at the fi frequency point, prompting the local mobile station to exit power saving and not allow the local mobile station to transmit signals. Then it changes from the idle state to the request occupation state. At this time, it will not be able to detect call requests from local mobile stations with higher priority, and only relay call requests to other link machines. At this time, the link machine only listens to the F0 frequency point, and the transmitting frequency point is F0.

[0030] In this embodiment, in step S1, when the source link machine is in the call answering state, the answering stage for establishing the call path is transient; first, the answer type is distinguished as unicast or all-cast answering; when in the unicast state: after F0 receives the unicast call answering, the link machine changes from the request occupation state to the call answering state, at which time the call path begins to be established, and the path is obtained according to the route in the call answering. The call answering is forwarded at F0, and then the state is switched to the cross-machine transit state, waiting for the input of voice data; when in the all-cast state: when the link machine receives the all-cast call answering, it changes from the request occupation state to the answering state, at which time the call path begins to be established. Different from the unicast, in addition to broadcasting the all-cast answering at F0, since the call answering has no path information at this time, an additional source node information is recorded, and the path to the source node is determined by comparing the routing table, thereby determining the upper-level frequency point that it needs to wait for, and then switching to the cross-machine transit state, waiting for the input of voice data.

[0031] In this embodiment, in step S1, when the source link machine is in the cross-level transfer state, it is used to complete the forwarding of voice data after the path is established. At this time, each link machine on the path is in the cross-machine transfer state. Each link machine waits at the upper-level frequency to wait for receiving voice data, and the destination node waits at the Fi frequency to wait for data from the local mobile phone. The transmitting frequency is Fi.

[0032] The repeater state definition and transfer method of the single-frequency digital relay wireless communication system includes the following steps: S1, link machine state setting; S2, scanning gap determination; S3, link machine receiving time slot and forwarding; S4, link machine call request forwarding; S5, link machine call request processing; S6, path establishment completion. When the link machine initiating the call in step S5 receives the sending response, the path establishment is completed, and the link machines on all paths are in the cross-machine transfer state. After the link is established, the link machines in all links are occupied until the sending end message is received from the initiating link machine. At this time, the link machine state on all paths is changed to idle. Among them, the present invention describes the various state information of the single-frequency digital wireless repeater, and there is no need to add other states. It can be applied to the wireless networking instance of the single-frequency digital wireless repeater. Moreover, the present invention can be used for the self-organizing networking solution of the single-frequency digital wireless repeater in any state, with a wide range of applicability and strong portability.

[0033] The above description is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for defining and transferring the status of a repeater station in a single-frequency digital relay wireless communication system, characterized in that: The following steps are involved: S1. Link machine state setting: The source link machine sets the following working states: idle, local transfer, request occupation, call answering and cross-machine transfer; S2, Scanning gap determination, when in the communication phase, all link machines will determine the scanning time slot based on the local state; Wherein, in said step S2, if the link machine is in the cross-machine transfer state, all the relay stations are in the fixed transceiver state; If the link machine is in idle state, all repeaters need to scan the local frequencies Fi and F0, and transmit the local beacons Fi and F0; S3. The link machine receives the time slot and forwards it. When the link machine receives a request from the local mobile station in the receiving time slot, if a call is required, it sends a call request in the next sending time slot. If it is a single call, the packet should include the link machine information corresponding to the call target mobile station. If it is an all-call call, the call request destination address can be set to all-address. S4. Link machine call request forwarding. When the link machine in step S3 receives a call request, it first determines whether the call is local based on the destination address. If so, it immediately sends a call response in the next transmission time slot, sets the local state to the local relay state, and switches to the frequency of the source address link machine to receive data. If not, it sets a waiting time based on the received signal strength. When the waiting time expires, the link machine forwards the call request. S5. Link machine call request processing. After the link machine forwards the call request in step S4, the link machine enters the request occupation state. The link machine sends a link occupation signal and prompts the local mobile phone to exit power saving, prepare to receive signals, and stop the local mobile phone from transmitting signals. If the transmission interruption and forced disconnection functions are available, only higher-priority terminals are allowed to forcibly insert or disconnect the call that is about to be established. When the destination link machine receives the request and responds, it switches to the call answering state when passing through the link machine again. After forwarding the response, it enters the inter-machine transfer state and waits at the upper frequency point. S6. Path establishment is completed. When the link machine that initiated the call in step S5 receives the send response, the path establishment is completed. The link machines on all paths are in the cross-machine transit state. After the link is established, the link machines in all links are occupied until the send completion message is received from the initiating link machine. At this time, the link machine status on all paths changes to idle.

2. The method for defining and transferring repeater status of a single-frequency digital relay wireless communication system according to claim 1, characterized in that: In step S2, when the link machine is in the cross-machine transfer state, except for the repeater to which the call originates, which receives the local frequency Fi-S1 / S2 and transmits Fi-S2 / S1, the other repeaters all receive the upper-level frequency Fn-S1 / S2 and transmit Fi-S2 / S1.

3. The method for defining and transferring repeater status of a single-frequency digital relay wireless communication system according to claim 1, wherein: In step S2, when the link machine is in an idle state, the local beacon is used for field strength scanning for terminal roaming, and the F0 beacon is used for link maintenance and routing field strength determination.

4. The method for defining and transferring repeater status of a single-frequency digital relay wireless communication system according to claim 1, wherein: In the step S3, the link machine sends a call request at F0.

5. The method for defining and transferring repeater status of a single-frequency digital relay wireless communication system according to claim 1, wherein: In step S3, the link machine information corresponding to the target mobile phone includes the target link machine address that the local link machine should parse based on the target mobile phone.

6. The method for defining and transferring repeater status of a single-frequency digital relay wireless communication system according to claim 1, wherein: In step S1, when the source link machine is in an idle state, the link machine stops working. The link machine can forward data from other link machines as well as data from downlink handsets. At this time, the listening frequency of the link machine is F0,Fi, and the transmitting frequency is F0.

7. The method for defining and transferring repeater status of a single-frequency digital relay wireless communication system according to claim 1, wherein: In step S1, when the source link machine is in the local transfer state, the source link machine serves the local mobile phone, and when the local mobile phone initiates a call and the call object is also another local mobile phone, it enters the local transfer state from the idle state. At this time, the local link machine does not forward data to the adjacent point link machine, and there is no need for the adjacent point to transfer data. The listening frequency of the link machine is Fi, and the transmitting frequency is Fi.

8. The method for defining and transferring repeater status of a single-frequency digital relay wireless communication system according to claim 1, wherein: In step S1, when the source link machine is in the request occupation state, which is used for the initiation phase of establishing a call path, after receiving a call request from another relay station, it first sends a link occupation signal at the F0 frequency point, prompting the local mobile station to exit power saving and not allowing the local mobile station to transmit signals. Then it changes from the idle state to the request occupation state. At this time, it will not be able to detect call requests from local mobile stations with higher priority, and only relay call requests to other link machines. At this time, the link machine only listens to the F0 frequency point, and the transmitting frequency point is F0.

9. The method for defining and transferring repeater status of a single-frequency digital relay wireless communication system according to claim 1, wherein: In step S1, when the source link machine is in the call answering state, the answering phase for establishing the call path is transient; first, the answering type is distinguished as unicast or all-cast answering; When in unicast state: After F0 receives a unicast call response, the link machine changes from the request-occupied state to the call-answered state. At this time, the call path is established. The path is obtained according to the route in the call response. F0 forwards the call response and then switches to the cross-machine transfer state, waiting for the input of voice data. When in the all-cast state: When the link machine receives a call response from the all-cast, it changes from the request occupation state to the response state. At this time, the call path begins to be established. Different from unicast, in addition to broadcasting the all-cast response at F0, since the call response has no path information at this time, it will additionally record a source node information. By comparing the routing table, the path to the source node is determined, and the upper-level frequency point that it needs to wait is determined. Then it switches to the cross-machine transfer state and waits for the input of voice data.

10. The method for defining and transferring repeater status of a single-frequency digital relay wireless communication system according to claim 1, wherein: In step S1, when the source link machine is in the cross-level transfer state, it is used to complete the forwarding of voice data after the path is established. At this time, each link machine on the path is in the cross-machine transfer state. Each link machine waits at the upper-level frequency point to wait for receiving voice data, and the destination node waits at the Fi frequency point to wait for data transmitted from the local mobile phone. The transmitting frequency point is Fi.

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