CN109104265B

CN109104265B - Channel configuration method, base station and readable storage medium

Info

Publication number: CN109104265B
Application number: CN201810582489.6A
Authority: CN
Inventors: 邱利松; 赵鹏; 林赟; 王海涛; 王瑞洛; 林锦宇; 陈春霞
Original assignee: Hytera Communications Corp Ltd
Current assignee: Hytera Communications Corp Ltd
Priority date: 2018-06-07
Filing date: 2018-06-07
Publication date: 2021-12-24
Anticipated expiration: 2038-06-07
Also published as: CN109104265A

Abstract

The invention discloses a channel configuration method, which comprises the following steps: allocating communication channels for a calling party and a called party; detecting the online state of a called party; the communication channel is at least partially released based on the presence status. The invention also discloses a base station and a readable storage medium. Through the mode, the invention can release the channel resources in time and realize the reasonable distribution of the channel resources.

Description

Channel configuration method, base station and readable storage medium

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to a channel configuration method, a base station, and a readable storage medium.

Background

The trunking wireless communication system is an economical and flexible command and dispatch communication system developed in recent years, and is widely applied to various wireless communication systems.

TETRA (Terrestrial Trunked Radio) technology is a Trunked communication technology based on digital Time Division Multiple Access (TDMA), and channel resource management of the technology mainly depends on resource allocation at the time of service initiation and resource release at the time of service termination, and also depends on a call timeout timer or releases channel resources by monitoring uplink transmission signals when a call or a terminal is abnormal.

The current TETRA technical standard stipulates that resources are released through overtime of a call timer, a system issues call duration when a call is established, and the call is forcibly hung up when the call duration is overtime, so that channel resources are released. However, this method needs to passively wait for the call timeout to release the resources, and the channel resources cannot be released quickly and in time by the call timer, resulting in a waste of channel resources for a long time.

Disclosure of Invention

The invention mainly solves the technical problem of providing a channel configuration method, a base station and a readable storage medium, which can release channel resources in time and realize reasonable distribution of the channel resources.

In order to solve the technical problems, the invention adopts a technical scheme that: a channel configuration method is provided, and the channel configuration method comprises the following steps: allocating communication channels for a calling party and a called party; detecting the online state of a called party; the communication channel is at least partially released based on the presence status.

In order to solve the technical problem, the invention adopts another technical scheme that: there is provided a base station comprising a processor and a memory for storing a computer program, the processor being arranged to invoke the computer program to perform the method as described above.

In order to solve the technical problem, the invention adopts another technical scheme that: there is provided a readable storage medium having stored thereon a computer program that can be invoked to perform the method described above.

The invention has the beneficial effects that: unlike the prior art, the present invention provides for the allocation of communication channels for the calling party and the called party; detecting the online state of a called party; and releasing the communication channel according to at least part of the online state, and releasing the channel resource in time by actively detecting the online state of the called party so as to realize reasonable distribution of the channel resource.

Drawings

Fig. 1 is a flowchart illustrating a channel configuration method according to a first embodiment of the present invention;

fig. 2 is a flowchart illustrating a channel configuration method according to a second embodiment of the present invention;

fig. 2a is a schematic diagram illustrating a principle of presence indication detection between a base station and a terminal according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a channel configuration method according to a third embodiment of the present invention;

FIG. 4 is a schematic diagram of one embodiment of the frequency and location of BL-DATA signaling in accordance with the present invention;

FIG. 5 is a schematic diagram of another embodiment of the frequency and location of BL-DATA signaling in accordance with the present invention;

FIG. 6 is a diagram of a hardware structure of a base station according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a readable storage medium according to an embodiment of the present invention.

Detailed Description

Referring to fig. 1, fig. 1 is a flowchart illustrating a channel allocation method according to a first embodiment of the invention. In this embodiment, the channel configuration method may include the following steps:

step S11: communication channels are allocated to the calling party and the called party.

Wherein, the base station can allocate channel resources for the calling party and the called party.

In one embodiment, a one-to-one half-duplex call may correspond, for example, with the calling party being a first terminal and the called party being a second terminal.

In another embodiment, one-to-many may correspond to a group call, for example, the calling party is a calling terminal and the called party is a plurality of called terminals in the same group.

Reference may be made in particular to the description of the examples below.

Step S12: the presence status of the called party is detected.

Wherein, the online state of the called party can be detected by the base station in real time.

In one embodiment, in the case of a one-to-one half-duplex call, the base station may perform the detection by sending a preset request signaling to the second terminal.

In another embodiment, in the case of a one-to-many group call, the base station may perform detection by sending a preset request signaling to the same cell or different cells where multiple called terminals are located to obtain the activity indexes of different cells.

Reference may be made in particular to the description of the examples below.

Step S13: the communication channel is at least partially released based on the presence status.

Wherein the traffic communication channel may be released at least in part by the base station based on the presence status of the called party.

In an embodiment, in the case of a one-to-one half duplex call, the base station may determine whether the second terminal is online according to whether a preset reply signaling sent by the second terminal is received. The communication channel between the first terminal and the second terminal is completely released when the two terminals are not on-line.

In another embodiment, in the case of a one-to-many group call, the base station may release the communication channel of one or more cells based on the activity index of the cell.

Reference may be made in particular to the description of the examples below.

Referring to fig. 2, fig. 2 is a flowchart illustrating a channel allocation method according to a second embodiment of the present invention.

In this embodiment, the calling party is a first terminal, and the called party is a second terminal. The communication between the calling party and the called party may be a half-duplex communication.

The allocating of the communication channels to the calling party and the called party may specifically be: a communication channel is allocated to the first terminal and the second terminal to allow the first terminal and the second terminal to communicate.

The detecting the presence status of the called party may specifically be: and detecting whether the second terminal is on line.

Releasing, at least in part, the communication channel based on the presence status includes: and releasing the communication channel when the second terminal is not on line.

The detecting whether the second terminal is online may specifically include the following steps: sending a preset request signaling to the second terminal according to a preset frequency so as to allow the second terminal to respond to the preset request signaling; when a preset reply signaling sent by a second terminal is received, generating an online detection result of the second terminal; and when the times of not receiving the preset reply signaling exceed the preset times, generating an offline detection result of the second terminal.

In this embodiment, the channel configuration method may include the following steps:

step S21: a communication channel is allocated to the first terminal and the second terminal to allow the first terminal and the second terminal to communicate.

The first terminal may send a call request to the base station to request communication with the second terminal, the base station allocates a communication channel for communication between the first terminal and the second terminal, and the first terminal and the second terminal start communication.

Step S22: and sending a preset request signaling to the second terminal according to the preset frequency so as to allow the second terminal to respond to the preset request signaling.

The base station sends a preset request signaling to the second terminal according to a preset frequency so as to allow the second terminal to respond to the preset request signaling.

Step S23: when a preset reply signaling sent by a second terminal is received, generating an online detection result of the second terminal; and when the times of not receiving the preset reply signaling exceed the preset times, generating an offline detection result of the second terminal.

The base station waits for the response of the second terminal, and generates an online detection result of the second terminal if a preset reply signaling from the second terminal is received within a preset waiting time; if the preset reply signaling is not received within the preset waiting time and the preset request signaling sent by the base station for the continuous preset times is not received by the base station within the preset waiting time, the base station generates the detection result that the second terminal is not on line.

The second terminal being offline may refer to shutdown of the second terminal, specifically shutdown or manual shutdown due to power exhaustion of a battery, or failure of a communication module of the second terminal, which may result in failure of communication.

In this embodiment, the channel configuration method is a channel configuration method based on a TETRA protocol, and the preset request signaling is a BL-DATA signaling in a BASIC Link mode of a Logical Link Control sublayer (LLC) in the TETRA protocol.

The preset reply signaling is BL-ACK signaling in a BASIC LINK mode of a logical LINK control sublayer in a TETRA protocol.

Referring to fig. 2a, fig. 2a is a schematic diagram illustrating a principle of presence indication detection between a base station and a terminal according to an embodiment of the present invention. The two situations include the situation that a reply is received and the situation that a reply is not received, the situation that a reply is received on the left side, and the situation that a reply is not received on the right side.

As shown in fig. 2a, the base station implements detection of presence indication by sending a BL-Data signaling carrying no upper SDU (Service Data Unit) to the second terminal and waiting for the second terminal to reply to the BL-ACK signaling, and if the base station receives the BL-ACK signaling sent by the second terminal within a predetermined waiting time, the base station generates a detection result that the second terminal is online, and if the base station does not receive the BL-ACK signaling sent by the second terminal within the predetermined waiting time for a predetermined number of consecutive times, the base station generates a detection result that the second terminal is offline. Since the BL-DATA signaling does not carry the upper layer SDU and does not carry the PDU (protocol DATA unit) of the third layer (network layer), no impact is caused on the upper layer logic processing.

Step S24: and releasing the communication channel when the second terminal is not on line.

And the base station releases the communication channels allocated to the first terminal and the second terminal when detecting that the second terminal is not on line.

Referring to fig. 3, fig. 3 is a flowchart illustrating a channel allocation method according to a third embodiment of the invention.

In this embodiment, the calling party is a calling terminal, the called party is a plurality of called terminals in the same cell, or the called party is a plurality of called terminals distributed in a plurality of different cells. A calling terminal makes a call to a group consisting of a plurality of called terminals, a group call (group call), also called a group call.

In this embodiment, allocating communication channels to the calling party and the called party may specifically be: and allocating a communication channel for the cell in which the calling terminal and the plurality of called terminals are positioned so as to allow the calling terminal and the plurality of called terminals to communicate.

Detecting the presence status of the called party may include: and detecting the activity index of each cell where a plurality of called terminals are located.

Releasing the communication channel at least in part according to the presence status may include: when the activity index of any cell is lower than a first activity index threshold value for N times continuously, releasing a communication channel of the cell; or when the sum of the activity indexes of a plurality of different cells distributed by a plurality of called terminals is lower than a second activity index threshold value for N times continuously, releasing all communication channels of the plurality of different cells; wherein N is a positive integer.

Specifically, the detecting the activity index of each cell in which the plurality of called terminals are located includes: sending a preset request signaling to all called terminals in each cell according to a preset frequency so as to allow the called terminals to respond to the request signaling; when the preset reply signaling is not received, setting the activity index of the corresponding cell to be 0; when a signal is received and a preset reply signaling is analyzed, setting the activity index of a corresponding cell as 1; when the time slot check error is received and the received signal strength is greater than the background noise, the activity index of the corresponding cell is set to be 2;

when the activity index of any cell is lower than a first activity index threshold value for N times continuously, releasing a communication channel of the cell; or when the sum of the activity indexes of a plurality of different cells distributed by the plurality of called terminals is lower than the second activity index threshold value N times continuously, releasing all the communication channels of the plurality of different cells may specifically be: when the active index of any cell is 0 for N times continuously, releasing the communication channel of the cell; or when the sum of the activity indexes of a plurality of different cells distributed by a plurality of called terminals is lower than 2 continuously N times, releasing the communication channels of all the plurality of different cells.

step S31: and allocating a communication channel for the cell in which the calling terminal and the plurality of called terminals are positioned so as to allow the calling terminal and the plurality of called terminals to communicate.

When a calling terminal requests to call a plurality of called terminals in the same group, a base station allocates communication channels for communication between the calling terminal and the plurality of called terminals. Specifically, a plurality of called terminals in the same group may be distributed in different cells, for example, a plurality of called terminals may be distributed in n (n is a positive integer) different cells, and then the base station allocates corresponding communication channels for the cells. It is understood that n may take a value of 1, i.e. multiple called terminals may be distributed in the same cell.

Step S32: sending a preset request signaling to all called terminals in each cell according to a preset frequency so as to allow the called terminals to respond to the request signaling, and setting the activity index of the corresponding cell to be 0 when the preset reply signaling is not received; when a signal is received and a preset reply signaling is analyzed, setting the activity index of a corresponding cell as 1; and when the receiving time slot is checked to be wrong and the received signal strength is greater than the background noise, setting the activity index of the corresponding cell to be 2.

The base station sends a preset request signaling to all called terminals distributed in each cell according to a preset frequency so as to allow the called terminals to respond to the request signaling; when the base station does not receive the preset reply signaling, the base station sets the activity index of the corresponding cell to be 0; when the base station receives the signal and analyzes a preset reply signaling, the activity index of the corresponding cell is set to be 1; and when the base station receives the time slot check error and the received signal strength is greater than the background noise, the base station sets the activity index of the corresponding cell to be 2.

In this embodiment, the channel configuration method is a channel configuration method based on a TETRA protocol, and the preset request signaling is a BL-DATA signaling in a BASIC Link mode of a Logical Link Control sublayer (LLC) in the TETRA protocol. The preset reply signaling is BL-ACK signaling in a BASIC LINK mode of a logical LINK control sublayer in a TETRA protocol. The specific procedures of BL-DATA signaling transmission and BL-ACK signaling reply can be referred to fig. 2a and the related description in the above embodiment.

The following description will be given taking the acquisition of the activity index of the kth cell among n cells as an example. Wherein k is more than or equal to 1 and less than or equal to n, and k is a positive integer.

And if the base station does not receive any BL-ACK signaling in the kth cell within the preset waiting time, which represents that the cell has no called terminal online, the activity index of the kth cell is set to be 0.

If the base station receives the signal from the called terminal in the kth cell within the preset waiting time and analyzes the BL-ACK signaling, which represents that the cell has one called terminal online, the activity index of the kth cell is set to be 1.

If the base station receives signals in the kth cell within the preset waiting time, but the CRC (Cyclic Redundancy Check) Check error of the receiving time slot is larger than the background noise lambda dB, two or more called terminals are on line, the number of BL-ACK signals received by the base station is too large to cause the Check error, and the Check error is not caused by noise interference, and at this time, the activity index of the kth cell is set to be 2.

For example, Act _ Index is used as the activity Index of the kth cell_group,cell-kThe calculation formula is expressed as formula (1). And then counting the sum of the group call activity indexes in all the cells, wherein the calculation formula is a formula (2).

Wherein, cell-k represents the k-th cell, and λ represents that the useful transmission signal exceeds the threshold of the background noise.

Step S33: when the activity index of any cell is lower than a first activity index threshold value for N times continuously, releasing a communication channel of the cell; or when the sum of the activity indexes of a plurality of different cells distributed by a plurality of called terminals is lower than a second activity index threshold value for N times continuously, releasing all communication channels of the plurality of different cells; wherein N is a positive integer.

When the activity index of any cell (for example, the kth cell) is lower than a first activity index threshold value for N times continuously, the base station releases a communication channel of the cell; or when the sum of the activity indexes of a plurality of different cells (for example, all N cells) distributed by a plurality of called terminals is continuously lower than a second activity index threshold value for N times, releasing the communication channels of all the plurality of different cells; wherein N is a positive integer.

Alternatively, the first activity index threshold may be 1, that is, the communication channels of the kth cell are released when the activity index of the cell is 0N times consecutively, and the second activity index threshold is 2, that is, the communication channels of all the cells are released when the sum of the activity indexes of all the cells is less than 2N times consecutively. In other words, when detecting that the sum of the activity indexes of all cells (e.g., all N cells) distributed by the plurality of called terminals is less than 2 consecutive times (system configurable parameter), the base station hangs up the group call and releases the channel resources on all cells. When the activity index of a certain cell (for example, a k-th cell) is equal to 0 for N times continuously, the base station releases the channel resources on the cell.

The following describes the BL-DATA signaling transmission timing and the preset frequency in the above embodiments.

In the above embodiments, the preset frequency is set so that the preset request signaling is transmitted once within a multiple frame of a half multiframe.

Optionally, the preset request signaling is sent at the last frame of each half multiframe multiple frame.

Optionally, the number of frames per multiframe is 18 frames. In other embodiments, the number of frames per multiframe may be other values, which is not limited in this embodiment of the present invention.

Referring to fig. 4, fig. 4 is a diagram illustrating the frequency and location of BL-DATA signaling according to an embodiment of the present invention. In one embodiment, the preset frequency may be 0.5, i.e., BL-DATA signaling is sent once per half multiframe, e.g., BL-DATA signaling is sent at the 9 th or 18 th frame of each multiframe when the number of frames of one multiframe is 18 frames.

Optionally, each frame comprises 4 slots, and the BL-DATA signaling is sent on one of the sub-slots of the traffic slot of

frame

9 or 18 of each multiframe. The BL-DATA signaling may be transmitted in the first half of the second slot of the 9 th or 18 th frame of each multiframe.

Referring to fig. 5, fig. 5 is a diagram illustrating another exemplary embodiment of the frequency and location of BL-DATA signaling according to the present invention. In another embodiment, the preset frequency may be 1, i.e. BL-DATA signaling is sent once per multiframe, e.g. BL-DATA signaling is sent at the 18 th frame of each multiframe when the number of frames of one multiframe is 18 frames.

Optionally, each frame comprises 4 slots, and the BL-DATA signaling is sent on one of the sub-slots of the traffic slot of the 18 th frame of each multiframe. The BL-DATA signaling may be transmitted in the first half slot of the second slot of the 18 th frame of each multiframe.

In other embodiments, the predetermined frequency may be 2,3 …, etc. as long as it is a multiple of 0.5, which is not described herein.

Whether in half-duplex calling or group calling, the issuing of BL-DATA signaling occupies the downlink time slot of the channel where the call is located, and the excessive occupation of the service channel affects the continuity of the voice stream or causes frame loss, so the contradiction between the voice service and the detection efficiency can be balanced by setting the sending frequency and the position, and the communication fluency can not be affected while the detection efficiency is ensured.

Referring to fig. 6, fig. 6 is a schematic diagram of a hardware structure of a base station according to an embodiment of the present invention.

In this embodiment, the base station 60 may include a processor 61 and a memory 62 electrically connected to the processor 61, wherein the memory 62 is used for storing a computer program, and the processor 61 is used for calling the computer program to execute the channel configuration method of any one of the above embodiments.

Referring to fig. 7, fig. 7 is a schematic diagram of a readable storage medium according to an embodiment of the invention.

In the present embodiment, the readable storage medium 70 is used for storing a computer program that can be executed to implement the channel configuration method of any one of the above-described embodiments.

Alternatively, the readable storage medium 70 may be various media that can store program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or a server.

Alternatively, the readable storage medium 70 may also be the memory 62 in the above-described embodiment.

The BL-DATA signaling and BL-ACK signaling mechanism under the BASIC LINK mode of the logic LINK control sublayer of the second layer (DATA LINK layer) based on the TETRA protocol realizes point-to-point or point-to-multiple presence indication detection, can realize the on-line state detection of half-duplex single call and group call detection terminals, and further realize the reasonable distribution of channel resources.

The method realizes a dynamic monitoring mechanism of cross-cell multi-member group calling channel resources by aiming at BL-DATA signaling and BL-ACK signaling with an indication detection mechanism and adopting an activity index mode according to a plurality of called terminals distributed in different cells, and flexibly controls and releases the channel resources of each cell.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A channel configuration method, the channel configuration method comprising:

allocating communication channels for a calling party and a called party;

detecting the online state of the called party;

releasing the communication channel at least in part according to the presence status;

the calling party is a calling terminal, the called party is a plurality of called terminals in the same cell, or the called party is a plurality of called terminals distributed in a plurality of different cells;

the allocating communication channels for the calling party and the called party comprises:

allocating a communication channel for a cell in which the calling terminal and the plurality of called terminals are located so as to allow the calling terminal and the plurality of called terminals to communicate;

the detecting the presence status of the called party comprises:

detecting the activity index of each cell where the plurality of called terminals are located;

wherein the detecting the activity index of each cell in which the called terminals are located comprises:

sending a preset request signaling to all called terminals in each cell according to a preset frequency so as to allow the called terminals to respond to the request signaling;

when the preset reply signaling is not received, setting the activity index of the corresponding cell to be 0; when a signal is received and the preset reply signaling is analyzed, setting the active index of the corresponding cell as 1; and when the receiving time slot is checked to be wrong and the received signal strength is greater than the background noise, setting the activity index of the corresponding cell to be 2.

2. The channel configuration method of claim 1, wherein said at least partially releasing the communication channel according to the presence status comprises:

when the activity index of any cell is lower than a first activity index threshold value for N times continuously, releasing a communication channel of the cell; or when the sum of the activity indexes of a plurality of different cells distributed by the called terminals is lower than a second activity index threshold value for N times continuously, releasing all the communication channels of the different cells;

wherein N is a positive integer.

3. The channel configuration method according to claim 2,

when the activity index of any cell is lower than a first activity index threshold value for N times continuously, releasing a communication channel of the cell; or when the sum of the activity indexes of a plurality of different cells distributed by the plurality of called terminals is lower than a second activity index threshold value for N times continuously, releasing the communication channels of all the plurality of different cells comprises:

when the active index of any cell is 0 for N times continuously, releasing the communication channel of the cell; or when the sum of the activity indexes of a plurality of different cells distributed by the plurality of called terminals is lower than 2 continuously for N times, releasing all the communication channels of the plurality of different cells.

4. The channel configuration method according to claim 3, wherein the channel configuration method is a channel configuration method based on a TETRA protocol, the preset request signaling is BL-DATA signaling in a BASIC LINK mode of a logical LINK control sublayer in the TETRA protocol, and the preset reply signaling is BL-ACK signaling in the BASIC LINK mode of the logical LINK control sublayer in the TETRA protocol.

5. The channel configuration method according to claim 3, wherein the predetermined frequency is set such that the predetermined request signaling is transmitted once within a multiple frame of a half multiframe.

6. The channel configuration method according to claim 5, wherein the predetermined request signaling is sent in the last frame of every half multiframe multiple frame.

7. The channel configuration method according to claim 6, wherein the number of frames of each of the multiframes is 18, and the preset request signaling is sent at the 9 th or 18 th frame of each multiframe, or the preset request signaling is sent at the 18 th frame of each multiframe.

8. A base station, characterized in that the base station comprises a processor and a memory for storing a computer program, the processor being adapted to invoke the computer program to perform the method of any of claims 1-7.

9. A readable storage medium, characterized in that it stores a computer program that can be called to execute the method of any one of claims 1-7.