CN111565368A - Method and device for establishing and transmitting group call service - Google Patents
Method and device for establishing and transmitting group call service Download PDFInfo
- Publication number
- CN111565368A CN111565368A CN201910112698.9A CN201910112698A CN111565368A CN 111565368 A CN111565368 A CN 111565368A CN 201910112698 A CN201910112698 A CN 201910112698A CN 111565368 A CN111565368 A CN 111565368A
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- group call
- modem
- call service
- transmission channel
- physical transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/50—Service provisioning or reconfiguring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
Abstract
The application discloses a method for establishing and transmitting a group call service, which comprises the following steps: after a modem receives a group call service establishment notification and determines that corresponding group information needs to be received, if a physical transmission channel between the modem and an AP is in a deep sleep state and the state of allowing a serial port to report an identifier is allowed, the modem converts the group call service establishment notification into an AT instruction and sends the AT instruction to an application processor AP through a UART port, and sets the state of allowing the serial port to report the identifier to be forbidden within a certain time; the modem sends the group call service establishment notification before conversion through the physical transmission channel, and the notification is used for triggering the awakening of the physical transmission channel; the AP receives a group call service establishment notification converted into an AT instruction, determines configuration information for a corresponding group call, starts a player, and sends the configuration information to the modem through the AT instruction by using a UART port; and the modem receives the configuration information, then configures local resources, and transmits the service data of the group call by using the awakened physical transmission channel. By applying the method and the device, the user plane can be prevented from losing words.
Description
Technical Field
The present application relates to group call technology in a communication system, and in particular, to a method and an apparatus for establishing and transmitting a group call service.
Background
Private network clusters are frequently used services in industrial applications, such as police, traffic police, etc. The 3GPP MCPTT uses MBMS channels to support group call services, and the current standard is mature.
Specifically, in the group call service, after the main speaking user presses the PTT button, the scheduling server notifies the terminal of the establishment of the group call service through the group call channel of the MBMS, and the process of the specific terminal performing the establishment of the group call service and the data transmission includes:
1. after receiving the group call service establishment notification, if the group data needs to be received, the 3GPP MCPTT client module issues corresponding configuration such as TMGI to the modem;
2. and after receiving the configuration, the modem performs resource configuration of L1 and L2, then receives the IP data of the group on the MBMS channel and sends the data to the MCPTT client module.
The 3GPP MCPTT client module is usually located on an Application Processor (AP), and the group call service setup notification and the service data are usually transmitted by using a physical channel (e.g., HSIC) between the AP and the modem.
Some terminals AP and modem are chip separated, and in order to save power, the physical channel between AP and modem, such as HSIC, can be powered down when there is no data for a while, and powered up again and port enumeration is performed when there is data transfer. After re-electrification and port enumeration are completed, the group calling service establishment notification is sent to the MCPTT client of the AP through the awakened physical channel, and the MCPTT client of the AP sends corresponding configuration to the modem through the awakened physical channel. However, since the power-up and enumeration time may be several hundred milliseconds, in the 3GPP trunking solution, the main speaker needs to start speaking within 300ms after pressing the PTT button, so as to achieve the effect of speaking when pressing.
When the AP and the modem are separated by chips, the power-off scene of a physical path between the AP and the modem can not transmit data until the AP and the modem are awakened. After the power-on enumeration is completed, the group call service establishment notification is sent to the MCPPPP client for processing, so that the signaling processing is possibly too late, the media player is started later, and the modem is configured to receive the voice data later, thereby finally causing word loss.
Disclosure of Invention
The application provides a method and a device for establishing and transmitting a group call service, which can configure a modem in time after an HSIC channel is powered off, so as to avoid word loss.
In order to achieve the purpose, the following technical scheme is adopted in the application:
a method for establishing and transmitting group call service includes:
after a modem receives a group call service establishment notification and determines that corresponding group information needs to be received, if a physical transmission channel between the modem and an AP is in a deep sleep state and the state of allowing a serial port to report an identifier is allowed, the modem converts the group call service establishment notification into an AT instruction and sends the AT instruction to an application processor AP through a UART port, and sets the state of allowing the serial port to report the identifier to be forbidden;
the modem sends the group call service establishment notification before conversion through the physical transmission channel, and the notification is used for triggering the awakening of the physical transmission channel;
the AP receives a group call service establishment notification converted into an AT instruction, determines configuration information for a corresponding group call, starts a player, and sends the configuration information to the modem through the AT instruction by using a UART port;
and the modem receives the configuration information, then configures local resources, and transmits the service data of the group call by using the awakened physical transmission channel.
Preferably, after the state of the serial port reporting permission identifier is set to be forbidden, a timer is started; and after the timer is overtime, setting the state of the allowed serial port reporting identifier as allowed.
Preferably, the method further comprises: the timer is terminated after system initialization.
Preferably, the method further comprises: the modem pre-acquires a group list to be monitored, and is used for determining whether group information corresponding to the received group call establishment notification needs to be received.
Preferably, the physical transmission channel is electrically processed in a deep sleep state, and the wake-up time delay is greater than a set threshold.
Preferably, the physical transmission channel is an HSIC channel.
An apparatus for establishing and transmitting a group call service, the apparatus comprising: a modem and an application processor AP;
the modem is used for converting the group call service establishment notification into an AT instruction and then sending the AT instruction to the AP through a UART port after the physical transmission channel between the modem and the AP is dormant and the state of a serial port reporting identifier is allowed after the group call service establishment notification is received, and setting the state of the serial port reporting identifier as forbidden; the group call service establishing device is also used for sending a group call service establishing notice before conversion through the physical transmission channel, and is used for triggering the awakening of the physical transmission channel; the local resource is configured after the configuration information is received;
the AP is used for receiving the group call service establishment notification converted into the AT command, determining configuration information for the corresponding group call and sending the configuration information to the modem through the AT command by utilizing the UART port; and the terminal is also used for transmitting the service data of the group call by utilizing the physical transmission channel awakened between the terminal and the modem.
According to the technical scheme, after the modem receives the group call service establishment notification and determines that the corresponding group information needs to be received, if a physical transmission channel between the modem and the AP is dormant and the state of allowing the serial port to report the identifier is allowed, the modem converts the group call service establishment notification into an AT instruction and then sends the AT instruction to the AP through the UART port, and sets the state of allowing the serial port to report the identifier to be forbidden; the modem sends a group call service establishment notification before conversion through a physical transmission channel, and the notification is used for triggering the awakening of the physical transmission channel; the MCPTT client on the AP receives the group call service establishment notification after the MCPTT client is converted into the AT instruction, determines configuration information for a corresponding group call, and sends the configuration information to the modem through the AT instruction by utilizing a UART port; and the modem receives the configuration information, then configures local resources, and transmits the service data of the group call by using the awakened physical transmission channel. By the mode, the modem can send the group call service establishment notification to the AP through the UART port in advance before the physical transmission channel is awakened, and receive the resource configuration information through the UART port to complete local configuration of the modem, so that group call data can be buffered in time, and word loss is avoided.
Further preferably, the modem may further start a timer after setting the state of the serial port reporting permission identifier to be prohibited, and after the timer expires, set the state of the serial port reporting permission identifier to be permitted, so as to ensure that the group call service establishment notification is reported through the serial port when the modem is dormant next time.
Drawings
Fig. 1 is a schematic diagram of a basic flow of a group call service establishment and transmission method in the present application;
fig. 2 is a flowchart of an embodiment of a group call service establishing and transmitting method;
fig. 3 is a schematic diagram of a basic structure of a group call service establishment and transmission method in the present application.
Detailed Description
For the purpose of making the objects, technical means and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings.
The basic idea of the application is that: and transmitting group call service establishment notification and configuration information in advance by utilizing a UART (universal asynchronous receiver/transmitter) interface between the modem and the AP (access point), thereby configuring modem resources in advance to buffer group call service data.
Fig. 1 is a basic flow diagram of a group call service establishment and transmission method in the present application. As shown in fig. 1, the method includes:
The physical transmission channel is electrically processed in a deep sleep state, and the wake-up time delay is long, for example, longer than a set threshold, and the specific threshold can be set according to actual needs. Of course, the specific processing defined in steps 101 to 104 does not include the threshold setting processing, which is the processing for determining the physical transmission channel, and the physical transmission channel that meets the above conditions may be applied to the present application, and may be, for example, an HSIC channel. In the application, a serial port reporting permission identifier is set for indicating whether a group call service establishment notification is permitted to be reported through a serial port at present, and the purpose of setting the identifier is as follows: the rate of serial port transmission is limited, and only one group call service establishment notice is allowed to be transmitted through the serial port in a short time; if too much data is transmitted through the serial port, the cluster system is not beneficial to running in a short time.
Further preferably, after the value of the serial port reporting permission identifier is set to be forbidden in this step, a timer is started, and after the timing time is up, the value of the serial port reporting permission identifier is set to be allowed.
And step 102, the modem sends a group call service establishment notification before conversion through a physical transmission channel.
The modem still sends the group call service establishment notification before conversion by using the dormant physical transmission channel, so as to trigger the awakening of the physical transmission channel. Here, the UART port has a relatively low transmission rate, and is not suitable for transmitting a large amount of data, or needs to transmit the service data of the group call through the physical transmission channel, so the physical transmission channel still needs to be woken up.
And step 104, after receiving the configuration information, the modem configures the local resource and transmits the service data of the group call by using the awakened physical transmission channel.
In addition, after the state of the reporting flag bit is set to be reported, a timer is started; after the timer is overtime, the state of the reporting flag bit is set as not reported; after system initialization, the corresponding timer is terminated. To identify whether the received group call service setup notification needs to receive the corresponding group information, the modem pre-acquires a group list to be listened to before step 101.
So far, the basic flow of the group call service establishing and transmitting method in the application is finished.
A detailed flow of an embodiment of the group call service establishment and transmission method is given in fig. 2, wherein an HSIC channel is taken as an example for explanation. As shown in fig. 2, the method of this embodiment includes:
1. initializing a system, wherein FLAG (allowing serial port reporting identification) is TRUE (allowing), and a timer T is not started;
2. the L2 of the modem receives a MAP packet of SIP;
3. if the group needs to be monitored, the state of the HSIC is inquired through an interface provided by bottom layer software, and further judgment is made
Condition a: deep sleep in HSIC;
condition B: the MAP data packet length is smaller than 508B (not including an IP header), and the power consumption optimization is applicable to the MAP data packet length smaller than 508B;
the condition C is that FLAG (allowing serial port to report the identification) is TRUE (allowing);
when the above conditions are all satisfied, executing step 3, otherwise, executing step 5;
the MAP packet of the SIP is also the group call service establishment notification. The underlying software of the modem provides an interface function so that L2 can query whether the current HSIC is asleep or not.
4. Converting the MAP packet into an AT instruction, setting FLAG (allowing serial port to report an identifier) as FALSE (forbidden), and starting a timer T;
5. sending the AT instruction to the AP through a UART port;
6. synchronously reporting a group establishment notice (IP packet, bearing MAP information) before conversion to trigger HSIC (high speed integrated circuit) to wake up;
7. the MCPTT client supports to obtain a group calling signaling of an AT command through an AP platform interface, and after receiving the signaling, normally performs subsequent processing according to the existing mode;
8. utilizing a UART port to configure a modem to receive data of a corresponding group through an AT instruction, and starting a player;
9. after receiving the MCPTT client configuration, the modem configures local resources and receives service data of the group call;
10. after a data path between the AP and the MODEM is awakened, the data packet of the L2 is normally forwarded through the HSIC;
11. setting FLAG (allowing serial port to report identification) as TRUE (allowing) when the timer T is overtime;
the timer T needs to be terminated when the system is initialized for various reasons, such as shutdown.
The method flow of the embodiment shown in fig. 2 ends.
The above is the specific implementation of the method for establishing and transmitting the group call service in the present application. The present application also provides a device for establishing and transmitting a group call service, and fig. 3 is a schematic diagram of a basic structure of the device. As shown in fig. 3, the apparatus includes: modem and AP.
The terminal comprises a modem and an AP, wherein the modem is used for receiving a group call service establishment notification, converting the group call service establishment notification into an AT instruction and then sending the AT instruction to the AP through a UART port if a physical transmission channel between the modem and the AP is dormant and the state of allowing a serial port to report an identifier is allowed, and setting the state of allowing the serial port to report the identifier to be forbidden; the system is also used for sending a group call service establishment notice before conversion through a physical transmission channel so as to trigger the awakening of the physical transmission channel; and the local resource is configured after the configuration information is received. The AP is used for receiving the group call service establishment notification converted into the AT command, determining configuration information for the corresponding group call and sending the configuration information to the modem by utilizing the UART port through the AT command; and the terminal is also used for transmitting the service data of the group call by using the physical transmission channel awakened between the terminal and the modem.
As can be seen from the specific implementation of the present application, in the present application, a modem acquires a group list to be monitored in advance, when there is a MAP signaling (SIP data packet) of a group call incoming and a group to be received, the modem reports the MAP to an AP through an AT instruction of a physical UART port and then sends the MAP to an MCPTT client, and after the MCPTT client receives the MAP of the AT, the MCPTT client starts subsequent processing, and AT this time, a physical transmission channel between the AP and the modem synchronously reports user plane data to trigger the MCPTT client to be powered on. Because the UART transmission rate is low and is not suitable for transmitting a large amount of data, some restrictions need to be made, only in the scenario that the HSIC is powered off, the MAP is converted into an AT command which is sent by the AT the UART port, and only one group call incoming notification AT the AT command is transmitted during the power-on period.
Through the processing, the MCPTT receives the group calling call notification in advance, the player can be started in advance 300ms-400ms earlier than the HSIC, and the modem is configured to receive group calling data, so that the phenomenon that a user plane loses words is avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A method for establishing and transmitting a group call service is characterized by comprising the following steps:
after a modem receives a group call service establishment notification and determines that corresponding group information needs to be received, if a physical transmission channel between the modem and an AP is in a deep sleep state and the state of allowing a serial port to report an identifier is allowed, the modem converts the group call service establishment notification into an AT instruction and sends the AT instruction to an application processor AP through a UART port, and sets the state of allowing the serial port to report the identifier to be forbidden;
the modem sends the group call service establishment notification before conversion through the physical transmission channel, and the notification is used for triggering the awakening of the physical transmission channel;
the AP receives a group call service establishment notification converted into an AT instruction, determines configuration information for a corresponding group call, starts a player, and sends the configuration information to the modem through the AT instruction by using a UART port;
and the modem receives the configuration information, then configures local resources, and transmits the service data of the group call by using the awakened physical transmission channel.
2. The method according to claim 1, characterized in that after the status of the serial port report permission flag is set to be forbidden, a timer is started; and after the timer is overtime, setting the state of the allowed serial port reporting identifier as allowed.
3. The method of claim 2, further comprising: the timer is terminated after system initialization.
4. The method of claim 1, further comprising: the modem pre-acquires a group list to be monitored, and is used for determining whether group information corresponding to the received group call establishment notification needs to be received.
5. The method according to claim 1, 2 or 3, wherein the physical transmission channel is powered off in a deep sleep state, and the wake-up time delay is greater than a set threshold.
6. The method of claim 5, wherein the physical transmission lane is an HSIC lane.
7. An apparatus for establishing and transmitting a group call service, the apparatus comprising: a modem and an application processor AP;
the modem is used for converting the group call service establishment notification into an AT instruction and then sending the AT instruction to the AP through a UART port after the physical transmission channel between the modem and the AP is dormant and the state of a serial port reporting identifier is allowed after the group call service establishment notification is received, and setting the state of the serial port reporting identifier as forbidden; the group call service establishing device is also used for sending a group call service establishing notice before conversion through the physical transmission channel, and is used for triggering the awakening of the physical transmission channel; the local resource is configured after the configuration information is received;
the AP is used for receiving the group call service establishment notification converted into the AT command, determining configuration information for the corresponding group call and sending the configuration information to the modem through the AT command by utilizing the UART port; and the terminal is also used for transmitting the service data of the group call by utilizing the physical transmission channel awakened between the terminal and the modem.
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| CN201910112698.9A CN111565368B (en) | 2019-02-13 | 2019-02-13 | Method and device for establishing and transmitting group call service |
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