CN110138713B - Data transmission method and data transmission device - Google Patents
Data transmission method and data transmission device Download PDFInfo
- Publication number
- CN110138713B CN110138713B CN201810134225.4A CN201810134225A CN110138713B CN 110138713 B CN110138713 B CN 110138713B CN 201810134225 A CN201810134225 A CN 201810134225A CN 110138713 B CN110138713 B CN 110138713B
- Authority
- CN
- China
- Prior art keywords
- data
- sending
- frame data
- silent frame
- sent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/80—Responding to QoS
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention provides a data transmission method and a data transmission device, which are applied to a base station side, wherein the method comprises the following steps: receiving a data packet from an access network side; the data packet carries a data type corresponding to the data packet; if the data type is the silent frame data type, encoding the silent frame data in the data packet to generate corresponding comfortable noise data; when receiving a comfort noise sending notice from an access network side, sending the comfort noise data through a first channel; wherein the first channel comprises: dual active hold burst channels. The embodiment of the invention can greatly save transmission resources and improve the transmission efficiency of data.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method and a data transmission apparatus.
Background
During voice communication, a large number of silent periods may be included in the voice of the transmitting end. In order to prevent the receiving end from mistakenly hearing no sound and assuming that the call is ended, thereby performing wrong operations such as hanging up and the like, the transmitting end can generate a silent frame in a silent period, and the silent frame can carry comfortable noise parameters; after receiving the silence frame, the receiving end generates comfortable background noise according to the comfortable noise parameter, so that the user knows that the call is still going on.
At present, the same transmission method is generally adopted for normal voice data and silence frame data, for example, the voice data and silence frame data are transmitted through a DTCH (dedicated traffic channel). However, since the data amount of the mute frame data is very small, transmission using a separate transmission channel causes a waste of transmission resources.
Disclosure of Invention
The embodiment of the invention provides a data transmission method and a data transmission device, which aim to solve the problem of resource waste caused in the transmission process of silent frame data in the prior art.
The embodiment of the invention provides a data transmission method, which is applied to a base station side and comprises the following steps:
receiving a data packet from an access network side; the data packet carries a data type corresponding to the data packet;
if the data type is the silent frame data type, encoding the silent frame data in the data packet to generate corresponding comfortable noise data;
when receiving a comfort noise sending notice from an access network side, sending the comfort noise data through a first channel; wherein the first channel comprises: dual active hold burst channels.
Optionally, if the data type is a silent frame data type, the data packet further carries a preset frame number of comfortable noise data corresponding to the silent frame data.
Optionally, the encoding the silence frame data in the data packet to generate corresponding comfort noise data includes:
adding cyclic redundancy check bits to the silent frame data and performing interleaving coding processing;
and dividing the coded comfortable noise data according to a preset size to obtain the comfortable noise data with a preset frame number.
Optionally, the method further comprises:
recording the number of transmitted frames of the comfort noise data;
and if the sent frame number is equal to the preset frame number, stopping sending the comfortable noise data.
Optionally, if the data type is a silent frame data type, the method further includes:
judging whether the last silent frame data is currently sent or not, if so, continuing to send the last silent frame data, and discarding the silent frame data in the data packet; if not, the silent frame data in the data packet is encoded to generate corresponding comfortable noise data.
Optionally, if the data type is a voice data type, the method further includes:
sending voice data in the data packet through a second channel;
and judging whether the last silent frame data is currently sent or not, if so, stopping sending the last silent frame data.
On the other hand, an embodiment of the present invention provides a data transmission method, which is applied to an access network side, and the method includes:
packaging data to be transmitted to generate a data packet, and adding a data type corresponding to the data packet in the data packet; when the data to be sent is silent frame data, the data type is a silent frame data type;
sending the data packet to a base station side;
and when it is determined that the comfort noise data transmission condition is currently satisfied, transmitting a comfort noise transmission notice to the base station side.
Optionally, when the data to be transmitted is silence frame data, increasing a preset number of frames of comfort noise data corresponding to the silence frame data in the data packet.
Optionally, the method further comprises:
and when the data to be sent is silent frame data, setting the sending period of the silent frame data and setting the number of frames to be sent of comfortable noise data corresponding to the silent frame data.
Optionally, the determining that the comfort noise data transmission condition is currently satisfied includes:
and if the current frame data is in the sending period of the silent frame data and the voice data to be sent does not exist currently, determining that the current comfortable noise data sending condition is met.
Optionally, the method further comprises:
after a comfortable noise sending notice is sent to a base station side, updating the number of frames to be sent of the comfortable noise data corresponding to the silent frame data;
and if the updated frame number to be sent is 0, terminating the sending period of the silent frame data and stopping sending a comfortable noise sending notice to the base station side.
Optionally, the method further comprises:
judging whether the current frame data is in the sending period of the silent frame data, if so, judging whether the current voice data to be sent exists, if so, terminating the sending period of the silent frame data, and sending the voice data to be sent to a base station side.
In another aspect, an embodiment of the present invention provides a data transmission apparatus, which is applied to a base station side, and the apparatus includes:
the data receiving module is used for receiving a data packet from an access network side; the data packet carries a data type corresponding to the data packet;
the data encoding module is used for encoding the silent frame data in the data packet to generate corresponding comfortable noise data if the data type is the silent frame data type;
a first sending module, configured to send the comfort noise data through a first channel when receiving a comfort noise sending notification from an access network side; wherein the first channel comprises: dual active hold burst channels.
Optionally, if the data type is a silent frame data type, the data packet further carries a preset frame number of comfortable noise data corresponding to the silent frame data.
Optionally, the data encoding module includes:
the coding submodule is used for adding a cyclic redundancy check bit to the silent frame data and carrying out interleaving coding processing;
and the division submodule is used for dividing the coded comfortable noise data according to the preset size to obtain the comfortable noise data with the preset frame number.
Optionally, the apparatus further comprises:
a recording module for recording the number of transmitted frames of the comfort noise data;
and the stopping module is used for stopping sending the comfortable noise data if the sent frame number is equal to the preset frame number.
Optionally, if the data type is a silent frame data type, the apparatus further includes:
the first judging module is used for judging whether the last silent frame data is currently sent or not, if so, continuing to send the last silent frame data, and discarding the silent frame data in the data packet; if not, the silent frame data in the data packet is encoded to generate corresponding comfortable noise data.
Optionally, if the data type is a voice data type, the apparatus further includes:
a second sending module, configured to send the voice data in the data packet through a second channel;
and the second judging module is used for judging whether the last silent frame data is currently sent or not, and if so, stopping sending the last silent frame data.
In another aspect, an embodiment of the present invention provides a data transmission apparatus, which is applied to an access network side, where the apparatus includes:
the data encapsulation module is used for encapsulating data to be transmitted to generate a data packet and adding a data type corresponding to the data packet in the data packet; when the data to be sent is silent frame data, the data type is a silent frame data type;
the data sending module is used for sending the data packet to a base station side;
and the notification sending module is used for sending a comfort noise sending notification to the base station side when the comfort noise data sending condition is determined to be met currently.
Optionally, when the data to be transmitted is silence frame data, the apparatus further includes:
and the increasing module is used for increasing the preset frame number of the comfortable noise data corresponding to the silent frame data in the data packet.
Optionally, the apparatus further comprises:
and the setting module is used for setting the sending period of the silent frame data and setting the number of frames to be sent of comfortable noise data corresponding to the silent frame data when the data to be sent is the silent frame data.
Optionally, the notification sending module includes:
and the condition determining submodule is used for determining that the comfortable noise data sending condition is met currently if the current silent frame data sending period is in and the voice data to be sent does not exist currently.
Optionally, the apparatus further comprises:
the updating module is used for updating the frame number to be sent of the comfortable noise data corresponding to the silent frame data after sending a comfortable noise sending notice to the base station side;
and the termination module is used for terminating the sending period of the silent frame data and stopping sending the comfort noise sending notice to the base station side if the updated frame number to be sent is 0.
Optionally, the apparatus further comprises:
and the third judging module is used for judging whether the current silent frame data is in a sending period of the silent frame data, judging whether the current voice data to be sent exists or not if the current silent frame data is in the sending period of the silent frame data, and terminating the sending period of the silent frame data and sending the voice data to be sent to a base station side if the current silent frame data exists.
The embodiment of the invention has the following advantages:
in the data transmission method of the embodiment of the invention, the base station side receives the data packet from the access network side, wherein the data packet carries the data type corresponding to the data packet, and the base station side can execute different operation processing on the data in the data packet and send the data through different physical channels according to the data type corresponding to the data packet. For example, if the data type is a silence frame data type, the silence frame data in the data packet may be encoded to generate corresponding comfort noise data, and the comfort noise data may be transmitted through the DKAB8 channel when a comfort noise transmission notification is received from the access network side. Because the DKAB8 does not carry application layer data, only has a 6-bit power control domain and an 8-bit comfort noise domain, and the burst power is very low, transmission resources can be greatly saved, and the transmission efficiency of data can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a flow chart of a first embodiment of a data transmission method of the present invention;
fig. 2 shows a flow chart of the steps of the data transmission method of the present invention on the base station side;
FIG. 3 is a flow chart of a second embodiment of a data transmission method of the present invention;
fig. 4 is a flowchart illustrating the steps of the data transmission method of the present invention on the access network side;
FIG. 5 is a block diagram of a first embodiment of a data transmission apparatus according to the present invention;
fig. 6 shows a block diagram of a second embodiment of a data transmission apparatus according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, the silence frame data is still transmitted according to normal voice data, however, because the data amount of the silence frame data is very small, the resource waste is caused by adopting a separate transmission channel for transmission.
In order to solve the above problem, in the embodiments of the present invention, the data transmission process at the access network side and the base station side is improved, and for silent frame data, a transmission channel different from voice data is used. Specifically, on the access network side, the data type corresponding to the data packet may be added to the data packet transmitted to the base station side to instruct the base station side to transmit through different physical channels for different types of data, and a comfort noise transmission notification may be transmitted to the base station side to instruct the base station side when the comfort noise data corresponding to the silence frame data may be transmitted. At the base station side, the data packet received from the access network side may be analyzed to obtain a data type corresponding to the data packet, if the data type is a silent frame data type, the silent frame data in the data packet is encoded to generate corresponding comfort noise data, and when a comfort noise transmission notification from the access network side is received, the comfort noise data is transmitted through a DKAB8(Dual Keep Alive Burst) channel. Because the DKAB8 does not carry application layer data, only has a 6-bit power control domain and an 8-bit comfort noise domain, and the burst power is very low, transmission resources can be greatly saved, and the transmission efficiency of data can be improved.
The following describes the specific implementation process of the data transmission method of the present invention from the base station side and the access network side, respectively.
Method embodiment one
Referring to fig. 1, a flowchart of a first embodiment of a data transmission method according to the present invention is shown, where the method is applied to a base station side, and the method specifically may include:
102, if the data type is a silent frame data type, encoding silent frame data in the data packet to generate corresponding comfortable noise data;
103, when receiving a comfort noise sending notice from the access network side, sending the comfort noise data through a first channel; wherein the first channel comprises: dual active hold burst channels.
In the embodiment of the present invention, the base station side receives the data packet from the access network side, where the data packet carries the data type corresponding to the data packet, specifically, the access network side may add a field for indicating the data type, such as adding a field DataFlag, to the data packet sent to the base station side, and after receiving the data packet from the access network side, the base station side may obtain the data type of the data packet according to the field by parsing the data packet, and further may send different types of data through different physical channels according to different data types.
In an application example of the present invention, when the DataFlag is 1, it may be set that the data type of the data packet is a silent frame data type, that is, the data packet includes silent frame data, the silent frame data may be encoded to generate corresponding comfort noise data, and the comfort noise data may be sent through a first channel; and setting that when the DataFlag is 0, the data type of the data packet is a voice data type, that is, the data packet includes voice data, and then the voice data can be transmitted through the second channel.
It can be understood that the above-mentioned identification of the data type of the data packet by adding the field DataFlag to the data packet is only an application example of the present invention, and the embodiment of the present invention does not impose a limitation on the specific manner of setting the data type of the data packet.
Wherein the first channel may specifically be DKAB8, which may be used for transmitting comfort noise data. Specifically, for the silence frame data, it needs to be subjected to encoding processing, generates comfort noise data that can be multiplexed in the comfort noise domain of DKAB8, and then transmits through the comfort noise domain of the multiplexed DKAB 8. Because the DKAB8 does not carry application layer data, only has a 6-bit power control domain and an 8-bit comfort noise domain, and the burst power is very low, the transmission resource can be greatly saved, and the transmission efficiency of data is improved.
The second channel may specifically be DTCH8, and may be used to transmit voice data. Specifically, for voice data, NT8 bursts using DTCH8 may be used for transmission over UU (interface between terminal and access network) ports. That is, for voice data, the transmission rate of the IU (interface between the access network and the core network) port and the UU port can be kept consistent, and one voice packet is generated every 60 ms. It is to be understood that, in practical applications, the embodiment of the present invention does not limit the specific types of the first channel and the second channel.
In an optional embodiment of the present invention, if the data type is a silent frame data type, the data packet may further carry a preset frame number of comfort noise data corresponding to the silent frame data.
In the embodiment of the present invention, for the silence frame data, encoding processing is required to generate comfort noise data that can be multiplexed in the comfort noise domain of DKAB8, and since one frame of comfort noise data is usually 8 bits and one silence frame data can generate a plurality of comfort noise data after encoding processing, a preset number of frames corresponding to the comfort noise data can be preset in the embodiment of the present invention, for example, the preset number of frames can be 41 frames.
In an optional embodiment of the present invention, the encoding processing on the silence frame data in the data packet to generate corresponding comfort noise data specifically includes the following steps:
step S11, adding cyclic redundancy check bits to the silent frame data and interleaving coding processing;
and step S12, dividing the coded comfortable noise data according to a preset size to obtain the comfortable noise data with a preset frame number.
The embodiment of the invention can encode the silent frame data to generate the comfortable noise data which can be multiplexed in the comfortable noise domain of DKAB 8. The process of the encoding process is specifically as follows:
for a silent frame data generated by IU port, the length is usually 144 bits, first, 12 bits of CRC (Cyclic Redundancy Check) bits can be added to the 144 bits of silent frame data to obtain 156 bits of output bits, such as { u (0), …, u (155) }; then, obtaining 324-bit coding output through 1/2Turbo coding; next, through interleaving coding, an output code of 324 bits is obtained, such as { e (0), …, e (323) }; finally, dividing the 324 output bits by a preset size, specifically, 8 bits, may obtain a preset number of frames (e.g. 41 frames) of comfort noise data, where each frame is 8 bits (4 bits of the last frame are complemented by 0).
In an alternative embodiment of the present invention, the first channel may specifically be DKAB8, and the noise domain of DKAB8 is multiplexed to continuously transmit the 41 frames of noise data to complete transmission of a silence frame data, DKAB8 does not carry application layer data, and only has a 6-bit power control domain and an 8-bit comfort noise domain, and outputs 14 bits, such as { e (0),. }, e (13) }.
It can be seen that the transmission time intervals of the silent frame data at the IU port and the UU port are not consistent, and a silent frame data generated at the IU port needs to be transmitted by the comfort noise data of 41 frames at the UU port to complete the transmission of the silent frame data. In addition, during the transmission of the silent frame data, the silent frame data may be interrupted by normal voice data, at this time, the access network side may preferentially send the voice data and stop sending the silent frame data, and the base station side cannot know that the silent frame data is interrupted by the voice data and still continues sending the silent frame data, which may cause the transmission time of the silent frame data of the IU port and the UU port to be inconsistent. In order to solve the above two problems, the base station side in the embodiment of the present invention may further receive a comfort noise transmission notification from the access network side, and transmit the comfort noise data through the first channel after receiving the comfort noise transmission notification.
In an optional embodiment of the present invention, if the data type is a silence frame data type, the method may further include the following steps:
judging whether the last silent frame data is currently sent or not, if so, continuing to send the last silent frame data, and discarding the silent frame data in the data packet; if not, the silent frame data in the data packet is encoded to generate corresponding comfortable noise data.
In the embodiment of the present invention, after receiving a data packet from an access network side, a base station side parses the data packet, and if the type of the data packet is a silent frame data type, it may first determine whether a last silent frame data is currently being sent, that is, whether 41 frames of comfort noise data corresponding to the last silent frame data have been sent, if the last silent frame data is currently being sent, continue to send the last silent frame data, and discard the silent frame data in the data packet. If the last silent frame data has been transmitted, the silent frame data in the data packet may be encoded to generate corresponding 41 frames of comfort noise data, and the generated 41 frames of comfort noise data may be buffered to transmit the comfort noise data through the first channel upon receiving a comfort noise transmission notification from the access network side.
After the silent frame data is encoded to generate the corresponding 41 frames of comfort noise data, a comfort noise domain table NoiseTable corresponding to the silent frame data can be established and used for storing the information of the 41 frames of comfort noise data corresponding to the silent frame data, the NoiseTable table takes the frequency point and the time slot as indexes, the NoiseTable table can comprise the corresponding comfort noise domain information on the frequency point and the time slot, and the comfort noise domain information comprises the 41 frames of comfort noise and respectively corresponds to the comfort noise domains of the 41 frames. In addition, in the embodiment of the present invention, a flag bit CurPos may be further set in the NoiseTable to record a position of the comfort noise currently being sent in the NoiseTable, for example, after the comfort noise of 41 frames is generated, the NoiseTable corresponding to the comfort noise of 41 frames is established, and the comfort noise of 41 frames respectively corresponds to the index numbers 0 to 40 in the NoiseTable, at this time, the position of the flag bit CurPos in the NoiseTable may be set to 0, that is, the transmission is started from the comfort noise data of the 1 st frame.
In an alternative embodiment of the present invention, the method may further comprise the steps of:
recording the number of transmitted frames of the comfort noise data;
and if the sent frame number is equal to the preset frame number, stopping sending the comfortable noise data.
In practical applications, in order to ensure that the transmission time of the silent frame data of the IU port and the UU port is consistent, the embodiment of the present invention starts to continuously transmit the buffered comfort noise data when the base station side receives a comfort noise transmission notification from the access network side, and records the number of transmitted frames of the comfort noise data.
Specifically, the access network side may send the comfort noise transmission notification to the base station side by setting a field DataFlag in the data packet. For example, if the base station side receives a packet from the access network side, and analyzes the packet to obtain that DataFlag is 2, it may be determined that a comfort noise transmission notification from the access network side is received, at this time, according to the position of currpos in the NoiseTable, 8-bit comfort noise domain information may be obtained, and the physical layer may be instructed to organize a DKAB8 burst transmission at the corresponding frame number, and at the same time, add 1 to the position of currpos in the NoiseTable to record the sent frame number of the comfort noise data, and if the position of currpos is 40, it indicates that the sent frame number of the comfort noise data is 41 (assuming that the initial position of currpos is 0), that is, 41 frames of comfort noise data corresponding to the current silence frame data have been completely transmitted, it may stop transmitting comfort data, and clear the NoiseTable table corresponding to the sent silence frame data.
In an optional embodiment of the present invention, if the data type is a voice data type, the method may further include the following steps:
sending voice data in the data packet through a second channel;
and judging whether the last silent frame data is currently sent or not, if so, stopping sending the last silent frame data.
In practical application, if the data type of the data packet is the voice data type, the voice data in the data packet is preferentially sent, specifically, the voice data in the data packet can be sent through the second channel, and whether the last silent frame data is currently sent is judged, if yes, the sending process of the last silent frame data is terminated, and the NoiseTable table corresponding to the last silent frame data is emptied; if not, the voice data in the data packet is directly sent through the second channel.
Referring to fig. 2, a flowchart of steps of the data transmission method at the base station side of the present invention is shown, which may specifically include the following steps:
To sum up, in the data transmission method according to the embodiment of the present invention, the base station side receives the data packet from the access network side, where the data packet carries the data type corresponding to the data packet, and the base station side may perform different operation processing on the data in the data packet and send the data through different physical channels according to the data type corresponding to the data packet. For example, if the data type is a silence frame data type, the silence frame data in the data packet may be encoded to generate corresponding comfort noise data, and the comfort noise data may be transmitted through the DKAB8 channel when a comfort noise transmission notification is received from the access network side. Because the DKAB8 does not carry application layer data, only has a 6-bit power control domain and an 8-bit comfort noise domain, and the burst power is very low, transmission resources can be greatly saved, and the transmission efficiency of data can be improved.
In addition, the embodiment of the invention can greatly save the transmitting power of the satellite in the transmitting process of the silent frame data without changing the existing network architecture through the mutual matching between the access network side and the base station side.
Method embodiment two
Referring to fig. 3, a flowchart of a second embodiment of a data transmission method according to the present invention is shown, where the method is applied to an access network side, and the method specifically may include:
301, encapsulating data to be transmitted, generating a data packet, and adding a data type corresponding to the data packet in the data packet; when the data to be sent is silent frame data, the data type is a silent frame data type;
In order to solve the problem of resource waste in the transmission process of the existing silent frame data, the embodiment of the invention improves the data transmission process of the access network side and the base station side, and adopts different transmission strategies and transmission channels for different types of data. On the access network side, a data type corresponding to the data packet can be added in the data packet sent to the base station side to instruct the base station side to send different types of data through different physical channels, and a comfort noise sending notice is sent to the base station side to instruct the base station side when the comfort noise data corresponding to the silence frame data can be sent.
Specifically, the access network side may add a field for indicating a data type, such as adding a field DataFlag, to a data packet sent to the base station side, and after receiving the data packet, the base station side may obtain the data type of the data packet according to the field by parsing the data packet, and may further send different types of data through different physical channels according to different data types.
For example, setting DataFlag to 0 indicates that the data type of the packet is voice data; setting DataFlag to be 1, and indicating that the data type of the data packet is silent frame data; the DataFlag is set to 2, indicating that the data type of the packet is comfort noise transmission notification or the like. It is to be understood that the embodiment of the present invention does not limit the specific manner of setting the data type of the data packet.
In an application example of the present invention, if data to be sent is silence Frame data, the access network side may encapsulate the silence Frame data, generate a data packet, such as a Frame Protocol (FP) data packet, where the data packet includes the silence Frame data, and set a field DataFlag for indicating a data type in a header of the data packet, and set the DataFlag to 1.
In an optional embodiment of the present invention, when the data to be transmitted is silence frame data, a preset number of frames of comfort noise data corresponding to the silence frame data may be further added to the data packet.
Since the silence frame data may correspond to comfort noise data of 41 frames, a preset number of frames, such as 41 frames, of the silence frame data corresponding to comfort noise data may also be included in the data packet.
In an optional embodiment of the invention, the method may further comprise:
and when the data to be sent is silent frame data, setting the sending period of the silent frame data and setting the number of frames to be sent of comfortable noise data corresponding to the silent frame data.
In the embodiment of the present invention, a Silence frame data corresponds to 41 frames of comfort noise data, and the transmission process of the Silence frame data can be completed only by continuously transmitting 41 frames of comfort noise data, and in the transmission process of 41 frames of comfort noise data, it may be interrupted by voice data, therefore, in the embodiment of the present invention, in the process of transmitting the Silence frame data, a transmission period of the Silence frame data can be set to indicate that the Silence frame data is currently being transmitted, for example, when the data to be transmitted is the Silence frame data, the access network side transmits a data packet with a data type of Silence frame data to the base station side, and in addition, the access network side can also set a Flag bit Silence _ Flag to indicate whether the Silence frame data is currently in the transmission period, for example, if the Silence _ Flag is set to 1, the transmission period currently in the Silence frame data is indicated, that is, a certain silent frame data is currently being transmitted, if Silence _ Flag is set to 0, it indicates that the silent frame data is not currently in the transmission period of the silent frame data, that is, the silent frame data is not currently being transmitted. Therefore, the access network side can perform corresponding processing on the silent frame data which is currently transmitted and the voice data or the silent frame data to be transmitted according to the transmission state of the silent frame data.
In an alternative embodiment of the present invention, the determining that the comfort noise data transmission condition is currently satisfied includes:
and if the current frame data is in the sending period of the silent frame data and the voice data to be sent does not exist currently, determining that the current comfortable noise data sending condition is met.
When the MAC (Medium Access Control, media Control protocol) interruption arrives, the Access network side may obtain a value of Silence _ Flag, further determine whether there is currently voice data to be transmitted if the value of Silence _ Flag is 1, that is, if there is currently a transmission period of Silence frame data, and if there is currently no voice data to be transmitted, determine that a comfort noise data transmission condition is currently satisfied, and may send a comfort noise transmission notification to the base station side to notify the base station side that the Silence frame data currently being transmitted may be continuously transmitted.
In an optional embodiment of the invention, the method may further comprise:
after a comfortable noise sending notice is sent to a base station side, updating the number of frames to be sent of the comfortable noise data corresponding to the silent frame data;
and if the updated frame number to be sent is 0, terminating the sending period of the silent frame data and stopping sending a comfortable noise sending notice to the base station side.
Therefore, the embodiment of the present invention may further record the number of frames SendNum to be transmitted of the comfort noise data corresponding to the silence frame data, and set the initial value of SendNum to be 41, and each time one frame of comfort noise data is transmitted, that is, after the comfort noise transmission notification is transmitted to the base station side, the number of frames to be transmitted of the comfort noise data corresponding to the silence frame data may be updated, the value of SendNum is reduced by 1, and when the updated value of SendNum is 0, it indicates that the transmission of the silence frame data is completed, the transmission period of the silence frame data may be terminated, and the transmission of the comfort noise transmission notification to the base station side is stopped.
In an optional embodiment of the invention, the method may further comprise:
judging whether the current frame data is in the sending period of the silent frame data, if so, judging whether the current voice data to be sent exists, if so, terminating the sending period of the silent frame data, and sending the voice data to be sent to a base station.
In the embodiment of the present invention, when the MAC interruption comes, the access network side may first determine whether Silence _ Flag is 1, and if the Silence _ Flag is 1, it indicates that the current transmission period of the Silence frame data is, that is, a certain Silence frame data is currently being transmitted. At this time, it may be further determined whether there is voice data to be sent, and if there is voice data to be sent, the voice data is preferentially sent, specifically, the voice data to be sent may be encapsulated into an FP data packet, and the DataFlag in the packet header is set to 0, the data packet is sent to the base station side, and the silent frame data currently being sent is interrupted, that is, the sending period of the silent frame data is terminated.
Referring to fig. 4, a flowchart of steps of the data transmission method at the access network side of the present invention is shown, which may specifically include the following steps:
if the current Silence frame data is in the transmission period of the Silence frame data (Silence _ Flag is 1), that is, the current Silence frame data being transmitted exists, further determining whether the current voice data to be transmitted exists, if so, interrupting the current Silence frame data being transmitted, preferentially transmitting the voice data, and executing step 404, otherwise, executing step 405, so as to transmit a comfort noise transmission notification to the base station side, so that the base station side continues to transmit the current Silence frame data being transmitted.
if the access network side receives the voice data from the core network side in the process of sending the silent frame data, namely the voice data to be sent currently exists, the silent frame data currently being sent needs to be interrupted, and the voice data is preferentially sent. Specifically, the voice data to be sent may be encapsulated to generate an FP data packet, and set DataFlag in the FP data packet to 0, and set Silence _ Flag to 0.
the access network side can send a comfortable noise sending notice to the base station side so that the base station side continuously sends the silent frame data currently being sent;
specifically, the access network side may encapsulate the FP packet and set DataFlag in the packet to 2 to notify the base station side that the DKAB8 may continue to be sent, and at the same time, the access network side performs a subtraction of 1 on SendNum corresponding to the currently being sent silence frame data.
Step 406, determining whether SendNum is 0, if yes, executing step 407;
if SendNum is 0, indicating that the transmission of the current silent frame data is completed, Silence _ Flag may be set to 0, indicating that there is no currently transmitted silent frame data.
when the MAC interruption arrives, if the Silence _ Flag is 0, indicating that there is no silent frame data currently being transmitted, determining whether data to be transmitted received from the core network side from the IU port is the silent frame data, if so, executing step 409 to notify the base station side to prepare to transmit the silent frame data; if not, step 410 is executed to notify the base station side to transmit the voice data.
specifically, the access network side may encapsulate the Silence frame data, generate an FP data packet, and send the data packet to the base station side, where the data packet includes the Silence frame data, a data type (a DataFlag is set to 1) corresponding to the data packet, and a preset number of frames, such as 41, corresponding to the Silence frame data, and sets a Silence _ Flag to 1, which indicates that the current transmission period of the Silence frame data is, the Silence frame data is being sent, and sets a number of frames to be sent SendNum corresponding to the Silence frame data to 41.
specifically, the access network side may encapsulate the voice data, generate an FP data packet, set DataFlag in the data packet to 0, and set Silence _ Flag to 0, which indicates that no Silence frame data is currently transmitted.
To sum up, in the data transmission method according to the embodiment of the present invention, the access network side may add the data type corresponding to the data packet in the data packet sent to the base station side to instruct the base station side to send different types of data through different physical channels, and send a comfort noise sending notification to the base station side to instruct the base station side when the base station side may send comfort noise data corresponding to the silence frame data. The base station side can analyze the data packet received from the access network side to obtain the data type corresponding to the data packet, if the data type is the silent frame data type, the silent frame data in the data packet is encoded to generate corresponding comfortable noise data, and when the comfortable noise sending notice from the access network side is received, the comfortable noise data is sent through a DKAB8 channel. Because the DKAB8 does not carry application layer data, only has a 6-bit power control domain and an 8-bit comfort noise domain, and the burst power is very low, transmission resources can be greatly saved, and the transmission efficiency of data can be improved.
In addition, the embodiment of the invention can greatly save the transmitting power of the satellite in the transmitting process of the silent frame data without changing the existing network architecture through the mutual matching between the access network side and the base station side.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Apparatus embodiment one
Referring to fig. 5, a block diagram of a first data transmission apparatus according to a first embodiment of the present invention is shown, and is applied to a base station side, where the data transmission apparatus may specifically include:
a data receiving module 501, configured to receive a data packet from an access network side; the data packet carries a data type corresponding to the data packet;
a data encoding module 502, configured to, if the data type is a silent frame data type, perform encoding processing on the silent frame data in the data packet to generate corresponding comfortable noise data;
a first sending module 503, configured to send the comfort noise data through a first channel when receiving a comfort noise sending notification from the access network side; wherein the first channel comprises: dual active hold burst channels.
Optionally, if the data type is a silent frame data type, the data packet further carries a preset frame number of comfortable noise data corresponding to the silent frame data.
Optionally, the data encoding module 502 may specifically include:
the coding submodule is used for adding a cyclic redundancy check bit to the silent frame data and carrying out interleaving coding processing;
and the division submodule is used for dividing the coded comfortable noise data according to the preset size to obtain the comfortable noise data with the preset frame number.
Optionally, the apparatus may further include:
a recording module for recording the number of transmitted frames of the comfort noise data;
and the stopping module is used for stopping sending the comfortable noise data if the sent frame number is equal to the preset frame number.
Optionally, if the data type is a silent frame data type, the apparatus may further include:
the first judging module is used for judging whether the last silent frame data is currently sent or not, if so, continuing to send the last silent frame data, and discarding the silent frame data in the data packet; if not, the silent frame data in the data packet is encoded to generate corresponding comfortable noise data.
Optionally, if the data type is a voice data type, the apparatus may further include:
a second sending module, configured to send the voice data in the data packet through a second channel;
and the second judging module is used for judging whether the last silent frame data is currently sent or not, and if so, stopping sending the last silent frame data.
Device embodiment II
Referring to fig. 6, a block diagram of a second embodiment of a data transmission apparatus according to the present invention is shown, and is applied to an access network side, where the data transmission apparatus specifically includes:
a data encapsulation module 601, configured to encapsulate data to be sent, generate a data packet, and add a data type corresponding to the data packet; when the data to be sent is silent frame data, the data type is a silent frame data type;
a data sending module 602, configured to send the data packet to a base station side;
a notification sending module 603, configured to send a comfort noise sending notification to the base station side when it is determined that the comfort noise data sending condition is currently satisfied.
Optionally, when the data to be transmitted is silence frame data, the apparatus may further include:
and the increasing module is used for increasing the preset frame number of the comfortable noise data corresponding to the silent frame data in the data packet.
Optionally, the apparatus may further include:
and the setting module is used for setting the sending period of the silent frame data and setting the number of frames to be sent of comfortable noise data corresponding to the silent frame data when the data to be sent is the silent frame data.
Optionally, the notification sending module 603 may specifically include:
and the condition determining submodule is used for determining that the comfortable noise data sending condition is met currently if the current silent frame data sending period is in and the voice data to be sent does not exist currently.
Optionally, the apparatus may further include:
the updating module is used for updating the frame number to be sent of the comfortable noise data corresponding to the silent frame data after sending a comfortable noise sending notice to the base station side;
and the termination module is used for terminating the sending period of the silent frame data and stopping sending the comfort noise sending notice to the base station side if the updated frame number to be sent is 0.
Optionally, the apparatus may further include:
and the third judging module is used for judging whether the current silent frame data is in a sending period of the silent frame data, judging whether the current voice data to be sent exists or not if the current silent frame data is in the sending period of the silent frame data, and terminating the sending period of the silent frame data and sending the voice data to be sent to a base station side if the current silent frame data exists.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The data transmission method and the data transmission device provided by the present invention are described in detail above, and the principle and the implementation of the present invention are explained in the present document by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (20)
1. A data transmission method is applied to a base station side, and is characterized by comprising the following steps:
receiving a data packet from an access network side; the data packet carries a data type corresponding to the data packet;
if the data type is the silent frame data type, encoding the silent frame data in the data packet to generate corresponding comfortable noise data;
when receiving a comfort noise sending notice from an access network side, sending the comfort noise data through a first channel; wherein the first channel comprises: dual active hold burst channels; and the comfort noise sending notice is sent by the network access side in the sending period of the silent frame data and is sent when the voice data to be sent does not exist currently.
2. The method of claim 1, wherein if the data type is a silence frame data type, the data packet further carries a preset number of frames of comfort noise data corresponding to the silence frame data.
3. The method of claim 2, wherein the encoding the silence frame data in the data packet to generate corresponding comfort noise data comprises:
adding cyclic redundancy check bits to the silent frame data and performing interleaving coding processing;
and dividing the coded comfortable noise data according to a preset size to obtain the comfortable noise data with a preset frame number.
4. The method of claim 2, further comprising:
recording the number of transmitted frames of the comfort noise data;
and if the sent frame number is equal to the preset frame number, stopping sending the comfortable noise data.
5. The method of claim 1, wherein if the data type is a silence frame data type, the method further comprises:
judging whether the last silent frame data is currently sent or not, if so, continuing to send the last silent frame data, and discarding the silent frame data in the data packet; if not, the silent frame data in the data packet is encoded to generate corresponding comfortable noise data.
6. The method of claim 1, wherein if the data type is a voice data type, the method further comprises:
sending voice data in the data packet through a second channel;
and judging whether the last silent frame data is currently sent or not, if so, stopping sending the last silent frame data.
7. A data transmission method is applied to an access network side, and is characterized in that the method comprises the following steps:
packaging data to be transmitted to generate a data packet, and adding a data type corresponding to the data packet in the data packet; when the data to be sent is silent frame data, the data type is a silent frame data type;
sending the data packet to a base station side;
when the data to be sent is silent frame data, setting the sending period of the silent frame data and setting the number of frames to be sent of comfortable noise data corresponding to the silent frame data;
and if the current frame data is in the sending period of the silent frame data and the current voice data to be sent does not exist, determining that the current frame data meets the sending condition of the comfortable noise data, and sending a comfortable noise sending notice to the base station side so that the base station side determines to send the comfortable noise data through a first channel according to the comfortable noise sending notice.
8. The method of claim 7, wherein when the data to be transmitted is silence frame data, a preset number of frames of the silence frame data corresponding to comfort noise data is added to the data packet.
9. The method of claim 7, further comprising:
after a comfortable noise sending notice is sent to a base station side, updating the number of frames to be sent of the comfortable noise data corresponding to the silent frame data;
and if the updated frame number to be sent is 0, terminating the sending period of the silent frame data and stopping sending a comfortable noise sending notice to the base station side.
10. The method of claim 7, further comprising:
judging whether the current frame data is in the sending period of the silent frame data, if so, judging whether the current voice data to be sent exists, if so, terminating the sending period of the silent frame data, and sending the voice data to be sent to a base station side.
11. A data transmission apparatus applied to a base station side, the apparatus comprising:
the data receiving module is used for receiving a data packet from an access network side; the data packet carries a data type corresponding to the data packet;
the data encoding module is used for encoding the silent frame data in the data packet to generate corresponding comfortable noise data if the data type is the silent frame data type;
a first sending module, configured to send the comfort noise data through a first channel when receiving a comfort noise sending notification from an access network side; wherein the first channel comprises: dual active hold burst channels; and the comfort noise sending notice is sent by the network access side in the sending period of the silent frame data and is sent when the voice data to be sent does not exist currently.
12. The apparatus of claim 11, wherein if the data type is a silence frame data type, the data packet further carries a preset number of frames of comfort noise data corresponding to the silence frame data.
13. The apparatus of claim 12, wherein the data encoding module comprises:
the coding submodule is used for adding a cyclic redundancy check bit to the silent frame data and carrying out interleaving coding processing;
and the division submodule is used for dividing the coded comfortable noise data according to the preset size to obtain the comfortable noise data with the preset frame number.
14. The apparatus of claim 12, further comprising:
a recording module for recording the number of transmitted frames of the comfort noise data;
and the stopping module is used for stopping sending the comfortable noise data if the sent frame number is equal to the preset frame number.
15. The apparatus of claim 11, wherein if the data type is a silence frame data type, the apparatus further comprises:
the first judging module is used for judging whether the last silent frame data is currently sent or not, if so, continuing to send the last silent frame data, and discarding the silent frame data in the data packet; if not, the silent frame data in the data packet is encoded to generate corresponding comfortable noise data.
16. The apparatus of claim 11, wherein if the data type is a voice data type, the apparatus further comprises:
a second sending module, configured to send the voice data in the data packet through a second channel;
and the second judging module is used for judging whether the last silent frame data is currently sent or not, and if so, stopping sending the last silent frame data.
17. A data transmission apparatus, applied to an access network side, the apparatus comprising:
the data encapsulation module is used for encapsulating data to be transmitted to generate a data packet and adding a data type corresponding to the data packet in the data packet; when the data to be sent is silent frame data, the data type is a silent frame data type;
the data sending module is used for sending the data packet to a base station side;
a notification sending module, configured to send a comfort noise sending notification to the base station side when it is determined that the comfort noise data sending condition is currently satisfied;
the setting module is used for setting the sending period of the silent frame data and setting the number of frames to be sent of comfortable noise data corresponding to the silent frame data when the data to be sent is the silent frame data;
the notification sending module comprises:
and the condition determining submodule is used for determining that the comfortable noise data sending condition is met currently if the current silent frame data sending period is in and the voice data to be sent does not exist currently.
18. The apparatus of claim 17, wherein when the data to be transmitted is silence frame data, the apparatus further comprises:
and the increasing module is used for increasing the preset frame number of the comfortable noise data corresponding to the silent frame data in the data packet.
19. The apparatus of claim 17, further comprising:
the updating module is used for updating the frame number to be sent of the comfortable noise data corresponding to the silent frame data after sending a comfortable noise sending notice to the base station side;
and the termination module is used for terminating the sending period of the silent frame data and stopping sending the comfort noise sending notice to the base station side if the updated frame number to be sent is 0.
20. The apparatus of claim 17, further comprising:
and the third judging module is used for judging whether the current silent frame data is in a sending period of the silent frame data, judging whether the current voice data to be sent exists or not if the current silent frame data is in the sending period of the silent frame data, and terminating the sending period of the silent frame data and sending the voice data to be sent to a base station side if the current silent frame data exists.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134225.4A CN110138713B (en) | 2018-02-09 | 2018-02-09 | Data transmission method and data transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134225.4A CN110138713B (en) | 2018-02-09 | 2018-02-09 | Data transmission method and data transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110138713A CN110138713A (en) | 2019-08-16 |
| CN110138713B true CN110138713B (en) | 2020-09-25 |
Family
ID=67567955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810134225.4A Active CN110138713B (en) | 2018-02-09 | 2018-02-09 | Data transmission method and data transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110138713B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1617605A (en) * | 2003-11-12 | 2005-05-18 | 皇家飞利浦电子股份有限公司 | Method and device for transmitting non-voice data in voice channel |
| CN101543104A (en) * | 2007-02-02 | 2009-09-23 | 三菱电机株式会社 | Communication method, base station, communication system, mobile terminal |
| CN102204387A (en) * | 2008-09-03 | 2011-09-28 | 诺基亚西门子通信公司 | Resource allocation during silence period for a wireless network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010104364A2 (en) * | 2009-03-13 | 2010-09-16 | 엘지전자 주식회사 | Technique for efficiently allocating resources in voip communication |
-
2018
- 2018-02-09 CN CN201810134225.4A patent/CN110138713B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1617605A (en) * | 2003-11-12 | 2005-05-18 | 皇家飞利浦电子股份有限公司 | Method and device for transmitting non-voice data in voice channel |
| CN101543104A (en) * | 2007-02-02 | 2009-09-23 | 三菱电机株式会社 | Communication method, base station, communication system, mobile terminal |
| CN102204387A (en) * | 2008-09-03 | 2011-09-28 | 诺基亚西门子通信公司 | Resource allocation during silence period for a wireless network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110138713A (en) | 2019-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101523590B1 (en) | Method for controlling codec mode in All-IP network and Terminal using the same | |
| EP2912906B1 (en) | Methods and arrangements for semi-persistent scheduling | |
| JP5709887B2 (en) | Adaptive data transmission for digital in-band modems operating over voice channels. | |
| CN108847248B (en) | Bluetooth device audio processing method, system, readable storage medium and Bluetooth device | |
| CN104917671A (en) | Mobile terminal based audio processing method and device | |
| CN102804665B (en) | System and method for supporting higher-layer protocol messaging in an in-band modem | |
| RU2710207C1 (en) | Wireless communication method and device | |
| CN1248833A (en) | Mobile terminal and base station for grouped radio service network | |
| US10237868B2 (en) | Signal sending method, receiving method and device | |
| US9053699B2 (en) | Apparatus and method for audio frame loss recovery | |
| CA2575065C (en) | Apparatus and method for transmitting/receiving packet in a mobile communication system | |
| CN111654586A (en) | Method, device, terminal and storage medium for adjusting voice coding code rate | |
| CN111385057B (en) | Data retransmission decoding method, device, system and communication equipment | |
| JPWO2021070310A5 (en) | ||
| CN109728884B (en) | Cluster data transmission method and device | |
| CN110138713B (en) | Data transmission method and data transmission device | |
| TWI423690B (en) | Communication system, method, and computer program product for discontinuous transmission in a wireless network | |
| EP3261309B1 (en) | Method, device, and system for information transmission | |
| JPH08251229A (en) | Radio communication system | |
| WO2012000341A1 (en) | Reception processing method and apparatus for downlink speech frame, and baseband | |
| CN113314128B (en) | Delayed access method, device and system for voice service and related products | |
| CN115171706A (en) | Data encoding method, data decoding method, device, equipment and medium | |
| CN109461451B (en) | Voice transmission method, device and system based on OPUS | |
| JPH09219649A (en) | Variable rate encoding system | |
| CN111383644A (en) | Audio communication method, equipment and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |