CN109688608B - Voice data distribution method and system - Google Patents
Voice data distribution method and system Download PDFInfo
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- CN109688608B CN109688608B CN201910002026.2A CN201910002026A CN109688608B CN 109688608 B CN109688608 B CN 109688608B CN 201910002026 A CN201910002026 A CN 201910002026A CN 109688608 B CN109688608 B CN 109688608B
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Abstract
The invention discloses a voice data distribution method and a system, wherein the method comprises the following steps: receiving an uplink data message sent by a first user terminal; analyzing and screening the VoLTE voice data message on the long term evolution in the uplink data message; extracting a target terminal identification from the screened voice data message; judging whether a second user terminal identified by the target terminal identification and the first user terminal are connected to the same base station or not; and if so, encapsulating the voice data message layer by layer according to the base station air interface side protocol, and sending the encapsulated voice data message to the second user terminal. According to the technical scheme provided by the invention, the voice data is shunted at the base station side, so that the voice data transmission path between the first user terminal and the second user terminal which are connected to the same base station is shortened, the time delay of a voice data packet is reduced, the packet loss and the error possibility of the voice data packet are reduced, the pressure of a core network can be relieved, and the utilization rate of the core network and the base station is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of mobile communication, in particular to a voice data distribution method and a voice data distribution system.
Background
In the technical field of LTE mobile communication, voice data of a user is accessed to a base station by a user terminal, enters an IMS (IP Multimedia Subsystem) of a core network through an S-GW (Serving GateWay) and a P-GW (PDN GateWay) of the core network, is subjected to voice related processing by the IMS, is transmitted to a base station where a called user terminal is located through the core network, and is finally transmitted to the called user terminal. The voice data are transmitted among the network elements strictly according to a specified sequence, and the interactive loops between the network elements are buckled with each other to cooperate to complete the whole communication process.
In recent years, with continuous breakthroughs in wireless access technology bottlenecks and rapid development of mobile internet, mobile netizens have a well-jet explosion trend. The increase of the number of users, the explosive growth of mobile internet data and the improvement of data transmission rate bring huge pressure to the data processing of the core network. With the reduction of voice charge by operators, a large amount of voice data also burst into the communication network, thus increasing the burden of the core network. The dual pressure of voice data and internet data puts higher demands on the network element performance of the core network.
In order to relieve the pressure of the core network in the communication system, a data offloading technology is developed. Currently, the mainstream data offloading technologies of the mobile communication network include Local IP Access (LIPA) and selective IP Traffic Offload (SIPTO), both of which are used to Offload user data directly from a base station without passing through a core network of an operator, and both of them need to add a Local Gateway (L-GW) similar to the P-GW in function to the base station, and connect the base station by establishing a direct or indirect channel, so as to Offload data from the base station through the Local Gateway without flowing through the core network. The addition of new network elements of the local gateway not only increases the software and hardware costs of the existing system, but also has high implementation difficulty and complex operation and maintenance. In any case, the user data related to the two shunting technologies refer to internet data of the user, do not relate to voice data, and cannot realize shunting of the voice data.
Therefore, a low-cost and efficient data offloading method is needed to implement data offloading, so as to reduce throughput and transmission cost of the core network and alleviate pressure of the core network.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a voice data offloading method and system, which can relieve the pressure of a core network by offloading voice data from a base station directly.
In order to achieve the above purpose, the present invention provides the following technical solutions:
in a first aspect, the present invention provides a voice data splitting method, where the method includes:
receiving an uplink data message sent by a first user terminal;
analyzing and screening the VoLTE voice data message on the long term evolution in the uplink data message;
extracting a target terminal identification from the screened voice data message;
judging whether a second user terminal identified by the target terminal identification and the first user terminal are connected to the same base station or not;
and if the second user terminal and the first user terminal are connected to the same base station, encapsulating the voice data message layer by layer according to a base station air interface side protocol, and sending the encapsulated voice data message to the second user terminal.
Further, in the voice data offloading method, after the step of determining whether the second user terminal identified by the target terminal identifier and the first user terminal are connected to the same base station, the method further includes:
and if the second user terminal and the first user terminal are not connected to the same base station, encapsulating the voice data message layer by layer according to a base station network side protocol, transmitting the encapsulated voice data message to a core network through the network, and transmitting the voice data message to the second user terminal through the core network.
Further, in the voice data offloading method, the step of determining whether the second user terminal identified by the target terminal identifier and the first user terminal are connected to the same base station includes:
inquiring a UE entity table of a base station where the first user terminal is located according to the target terminal identification;
and judging whether the second user terminal identified by the target terminal identification and the first user terminal are connected to the same base station or not.
Further, the voice data offloading method further includes:
when a user terminal is connected to a certain base station, recording a user terminal identifier of the user terminal to a UE entity table;
when the user terminal leaves the base station, deleting the corresponding UE entity information related to the user terminal in the UE entity table;
the user terminal is the first user terminal or the second user terminal.
Further, in the voice data offloading method, the voice data packet includes voice data and a target terminal identifier.
In a second aspect, the present invention provides a voice data offloading system, including:
the message receiving module is used for receiving an uplink data message sent by a first user terminal;
the analysis screening module is used for analyzing and screening the VoLTE voice data message on the long term evolution in the uplink data message;
the identification extraction module is used for extracting a target terminal identification from the screened voice data message;
a terminal judging module, configured to judge whether the second user terminal identified by the target terminal identifier and the first user terminal are connected to the same base station;
and the first processing module is used for encapsulating the voice data message layer by layer according to a base station air interface side protocol and sending the encapsulated voice data message to the second user terminal if the terminal judgment module judges that the second user terminal and the first user terminal are connected to the same base station.
Further, the voice data offloading system further includes:
and a second processing module, configured to encapsulate, after the step of determining whether the second user terminal identified by the target terminal identifier and the first user terminal are connected to the same base station, the voice data packet layer by layer according to a base station network side protocol if the terminal determining module determines that the second user terminal and the first user terminal are not connected to the same base station, transmit the encapsulated voice data packet to a core network through a network, and send the voice data packet to the second user terminal through the core network.
Further, in the voice data offloading system, the terminal determining module includes:
a terminal determining unit, configured to query, according to the target terminal identifier, a UE entity table of a base station where the first user terminal is located;
and the terminal judging unit is used for judging whether the second user terminal identified by the target terminal identification and the first user terminal are connected to the same base station.
Further, the voice data offloading system further includes:
the data storage module is used for recording a user terminal identifier of a user terminal to a UE entity table when the user terminal is connected to a certain base station;
and when the user terminal leaves the base station, deleting the corresponding UE entity information related to the user terminal in the UE entity table;
the user terminal is the first user terminal or the second user terminal.
Further, in the voice data offloading system, the voice data packet includes voice data and a target terminal identifier.
The voice data distribution method and the voice data distribution system provided by the invention distribute the voice data at the base station side, thereby shortening the voice data transmission path between the first user terminal and the second user terminal which are connected with the same base station, reducing the time delay of the voice data packet, reducing the packet loss and the error possibility of the voice data packet, relieving the pressure of a core network and improving the utilization rate of the core network and the base station.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram of a conventional data transmission architecture of voice data in a base station;
FIG. 2 is a diagram of a network architecture of a conventional voice data system;
fig. 3 is a schematic diagram of a data transmission architecture of a voice data offloading method in a base station according to the present invention;
fig. 4 is a schematic diagram of a network architecture of a voice data offloading method according to the present invention.
Fig. 5 is a schematic flowchart of a voice data offloading method according to an embodiment of the present invention;
fig. 6 is a schematic flowchart of a voice data offloading method according to a second embodiment of the present invention;
fig. 7 is a schematic diagram of a network architecture of an application embodiment of a voice data offloading method according to a third embodiment of the present invention;
fig. 8 is a schematic flowchart of a voice data offloading method according to a third embodiment of the present invention;
fig. 9 is a schematic flowchart of a voice data offloading method according to a fourth embodiment of the present invention;
fig. 10 is a schematic structural diagram of one embodiment of a voice data offloading system according to a fifth embodiment of the present invention.
Fig. 11 is a schematic structural diagram of another embodiment of a voice data splitting system according to a fifth embodiment of the present invention.
Fig. 12 is a schematic structural diagram of an application embodiment of a voice data offloading system according to a fifth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic diagram of interaction of voice data between modules in a base station in a conventional LTE system. As shown in the figure, in the base station, the Protocol stack on the air interface side of the base station related to the voice Data processing flow includes a PHY Layer (Physical Protocol Layer), a MAC Layer (Media Access Control Layer), an RLC Layer (Radio Link Control Layer), and a PDCP Layer (Packet Data Convergence Layer); the related Protocol stack at the network side of the base station mainly has a GTP Layer (GPRS tunneling Protocol Layer).
As can be seen from the figure, in the existing system, any data from the user terminal needs to be processed by each layer of protocol stack of the air interface side PHY layer, the MAC layer, the RLC layer, the PDCP layer, and the like of the base station in sequence, and then the data is pushed to the network side protocol stack GTP of the base station for processing, and the processed data of the user terminal needs to be transmitted to the core network through network transmission between the base station and the core network, and then is transmitted to each receiving-end network element by the core network.
When a first user terminal and a second user terminal are in a conversation, the first user terminal needs to transmit voice data to a base station through air interface wireless transmission, and after the voice data are analyzed and processed by protocol stacks of layers of an uplink channel of the base station, the voice data of the first user terminal need to be transmitted to a core network; the core network analyzes and judges a base station to which a destination address to which the voice data is to go belongs, namely a base station to which the second user terminal is connected, and then the voice data can be sent to the target base station according to the obtained target base station information, and the voice data of the first user terminal can be sent to the second user terminal after being subjected to packet processing of each layer of protocol stack of a downlink transmission channel of the target base station.
Regardless of whether the base station to which the first user terminal is connected and the base station to which the second user terminal is connected are the same base station, each voice packet of the call needs to undergo the process of "first user terminal → base station to which the first user terminal is connected → core network → base station to which the second user terminal is connected → second user terminal" or "second user terminal → base station to which the second user terminal is connected → core network → base station to which the first user terminal is connected → first user terminal", as shown in fig. 2. The core network and the target base station only play a role in forwarding the data packet to the voice data of the first user terminal, and the participation of the core network and the target base station prolongs a transmission path between the first user terminal and the second user terminal, so that not only is the time delay of the voice data packet increased, but also the packet loss and the error possibility of the voice data packet are increased.
Based on this, the present invention provides a voice data offloading method, which introduces voice offloading processing inside a base station, as shown in fig. 3, in an interaction scheme between modules inside the base station.
The invention introduces a voice shunt processing module in the base station, which is used for carrying out VoLTE voice data screening on long term evolution on the data from the PDCP module and judging whether a second user terminal identified by a target terminal identification of the screened voice data is connected to the same base station. And if the second user terminal identified by the target terminal identification of the screened voice data is connected with the same base station as the first user terminal, the voice data of the first user terminal is sent back to the PDCP module, and the voice data is directly processed by a downlink channel of the base station and is directly forwarded to the second user terminal.
When the base station to which the second user terminal is connected and the base station to which the first user terminal is connected are the same base station, the voice data sent by the first user terminal to the second user terminal can reach the second user terminal only through the path of "first user terminal → base station to which the first user terminal is connected → second user terminal", and the voice data sent by the second user terminal to the first user terminal can reach the first user terminal only through the path of "second user terminal → base station to which the second user terminal is connected → first user terminal", as shown in fig. 4. The call process shortens the voice data transmission path between the first user terminal and the second user terminal. The shortening of the transmission path not only can reduce the time delay of the voice data packet, but also can reduce the packet loss and the error possibility of the voice data packet. The interactive scheme of the invention reduces the forwarding of the voice data packet by the core network and the target base station, thereby reducing the interactive overhead of the voice data, saving the bandwidth, relieving the pressure of the core network and improving the utilization rate of the core network.
Example one
Referring to fig. 5, a schematic flow chart of a voice data offloading method according to an embodiment of the present invention is shown, where the method is applied to a scenario of transmitting voice data between user terminals, and the method is executed by a voice data offloading system, which may be implemented by software and/or hardware and integrated inside a mobile communication platform. The method specifically comprises the following steps:
s101, receiving an uplink data message sent by a first user terminal.
Specifically, the base station receives an uplink data packet sent by the first user terminal, where the uplink data packet includes a PHY header, an MAC header, an RLC header, a PDCP header, and a terminal IP data packet.
The base station needs to analyze the uplink data message layer by layer so as to obtain a voice data IP message.
S102, analyzing and screening the VoLTE voice data message in the uplink data message on the long term evolution.
It should be noted that the uplink data message sent by the first user terminal may be a VoLTE voice data message over long term evolution, or may be a VoLTE voice data message over non-long term evolution. Uplink data messages sent by the first user terminal need to be screened so as to screen out the VoLTE voice data messages in the long term evolution.
The screening method of the VoLTE voice data message can screen the VoLTE voice data message in the long term evolution from the uplink IP data message sent by the first user terminal by methods such as a QCI (QoS class identifier) value and the like. QCI is a parameter used by the system to identify transmission characteristics of service data packets, and the protocol 23203 defines QCI values corresponding to different bearer services.
S103, extracting the target terminal identification from the screened voice data message.
Wherein the voice data message comprises voice data and a target terminal identification.
Specifically, after a VoLTE voice data packet in the long term evolution is screened out from an uplink data packet sent by a first user terminal, a target terminal identifier needs to be extracted from the screened out voice data packet, so as to be used for judging whether a second user terminal identified by the target terminal identifier is connected to the same base station.
Optionally, the destination terminal identifier extracted from the screened voice data packet may be an IP address of the destination terminal in the voice IP packet or an ISDN number of the destination terminal.
Because the uplink data message sent by the first user terminal comprises a PHY header, an MAC header, an RLC header, a PDCP header, and a terminal IP data message, the base station needs to analyze the uplink data message layer by layer to obtain a VoLTE voice data IP message.
The analysis process specifically comprises PHY layer analysis, MAC layer analysis, RLC layer analysis and PDCP layer analysis from bottom to top.
After acquiring the voice over LTE (voice over LTE) voice data IP message, a target terminal identification can be extracted from the voice over LTE voice data IP message, wherein the target terminal identification can be an IP address of a target terminal or an ISDN number of the target terminal.
And S104, judging whether the second user terminal identified by the target terminal identification and the first user terminal are connected to the same base station.
Specifically, after extracting the target terminal identifier from the screened voice data message, it is necessary to determine whether the second user terminal identified by the target terminal identifier extracted from the screened voice data message and the first user terminal are connected to the same base station, so that the voice data can be subjected to the distribution processing in the following steps.
Through step S103, a target terminal identifier is extracted from the screened long term evolution voice over lte voice data packet in the uplink data packet sent by the first user terminal, where the target terminal identifier may be an IP address of the target terminal or an ISDN number of the target terminal;
by judging the target terminal identification, whether the target terminal of the voice data packet is connected with the first user terminal on the same base station or not can be known. The determination method may be specifically implemented by querying a User Equipment (UE) entity table for a UE identity. If the UE control entity can be inquired according to the target terminal identification, the second user terminal identified by the target terminal identification of the voice data message of the first user terminal is shown to be on the same base station with the first user terminal; if the UE control entity cannot be inquired according to the target terminal identification, the second user terminal identified by the target terminal identification of the voice data message of the first user terminal is not on the same base station as the first user terminal.
And S105, if the second user terminal and the first user terminal are connected to the same base station, encapsulating the voice data message layer by layer according to a base station air interface side protocol, and sending the encapsulated voice data message to the second user terminal.
Specifically, it can be determined whether the second user terminal identified by the target terminal identifier sent by the first user terminal to the uplink voice data packet and the first user terminal are connected to the same base station through step S104, and if it is determined that the second user terminal identified by the target terminal identifier of the voice data packet sent by the first user terminal and the first user terminal are both connected to the same base station, the uplink voice data packet from the first user terminal is pushed to the PDCP module of the base station and sent to the second user terminal connected to the same base station through the downlink transmission channel of the base station.
The PDCP module receives, in addition to the normal uplink data sent by the first user equipment, also downlink data to be sent to the target terminal, where the target terminal that needs to receive the uplink data sent by the first user equipment is connected to the base station. According to the protocol stack protocol of the air interface side of the base station, the base station needs to process and package the voice data message layer by layer of each protocol stack of the air interface side of the base station, add each layer of protocol header of the air interface side of the base station from top to bottom, and then send the voice data packet added with each layer of protocol header to a second user terminal through a wireless channel.
The layer-by-layer encapsulation according to the base station air interface side protocol comprises a PDCP head, an RLC head, an MAC head, a PHY head and the like which are encapsulated from top to bottom.
According to the voice data distribution method provided by the embodiment of the invention, voice data is distributed at the base station side, so that a voice data transmission path between a first user terminal and a second user terminal which are connected to the same base station is shortened, the time delay of a voice data packet is reduced, the packet loss and error possibility of the voice data packet are reduced, the pressure of a core network can be relieved, and the utilization rate of the core network and the base station is improved.
Example two
Fig. 6 is a schematic flow chart of a voice data offloading method according to a second embodiment of the present invention, where this embodiment optimizes the method after determining whether a second user terminal identified by the target terminal identifier and the first user terminal are connected to the same base station on the basis of the first embodiment. The same or corresponding terms as those in the above embodiments are not repeated herein, and specifically, referring to fig. 6, the method includes:
s201, receiving an uplink data message sent by a first user terminal.
S202, analyzing and screening the VoLTE voice data message in the uplink data message on the long term evolution.
S203, extracting the target terminal identification from the screened voice data message.
S204, judging whether the second user terminal identified by the target terminal identification and the first user terminal are connected to the same base station.
S205, if the second user terminal and the first user terminal are not connected to the same base station, the voice data message is encapsulated layer by layer according to a base station network side protocol, the encapsulated voice data message is transmitted to a core network through the network, and the core network sends the voice data message to the second user terminal.
It should be noted that, as a result of the determination in step S204, the second user terminal identified by the target terminal identifier sent by the first user terminal to the uplink voice data packet and the first user terminal are both connected to the same base station, or the second user terminal identified by the target terminal identifier sent by the first user terminal to the uplink voice data packet and the first user terminal are not connected to the same base station. And if the second user terminal identified by the target terminal identification of the voice data message sent by the first user terminal and the first user terminal are not connected to the same base station, pushing the uplink voice data message from the first user terminal to a GTP module at the network side of the base station, and sending the uplink voice data message to the second user terminal connected to the same base station through a downlink transmission channel of the base station.
And the GTP receives and processes the uplink data which is not connected with the base station and is to be sent to the target terminal, of the uplink data sent by the first user terminal. According to the protocol stack protocol of the network side of the base station, the base station needs to process and package the voice data message layer by layer of each protocol stack of the network side of the base station, adds each layer of protocol header of the network side of the base station from top to bottom, and transmits the voice data message to a core network of an operator through network transmission. The layer-by-layer encapsulation according to the base station network side protocol comprises a GTP head, an UDP head, an IP head, an Ethernet head and the like which are encapsulated from top to bottom.
The voice data distribution method receives and analyzes uplink data messages sent by a first user terminal to an IP layer by layer, a voice distribution processing module introduced into a base station screens the analyzed uplink IP data messages so as to screen VoLTE voice data messages on long term evolution, and whether the uplink voice data messages are sent back to a PDCP module or the voice data are pushed to a GTP module at the network side of the base station is determined by judging whether a second user terminal corresponding to a target IP address of the screened voice data messages is connected to the same base station or not. When the base station connected with the second user terminal to be communicated with the first user terminal is the same base station as the base station connected with the first user terminal, the voice data communicated between the two user terminals can realize voice data interaction only through a path of 'the first user terminal → the base station connected with the two user terminals → the second user terminal' or 'the second user terminal → the base station connected with the two user terminals → the first user terminal'.
The voice data distribution method provided by the embodiment of the invention shortens the voice data transmission path between the first user terminal and the second user terminal which are connected to the same base station, thereby not only reducing the time delay of the voice data packet, but also reducing the packet loss and the error possibility of the voice data packet; in addition, by reducing the forwarding of the voice data packet by the core network and the target base station, the interaction overhead of the voice data can be reduced to a certain extent, the pressure of the core network can be effectively reduced, the bandwidth can be saved, and the utilization rate of the core network and the base station can be improved.
EXAMPLE III
In order to further explain the technical solution of a voice data offloading method and the effect thereof provided by the present invention, a third example is adopted in conjunction with the network architecture diagram of the application embodiment of fig. 7 to further explain a voice data offloading method of the present invention.
As shown in fig. 7, in the voice data offloading method of the present invention, due to the function of the voice offloading processing module introduced in the base station, when the user terminal 1 and the user terminal 2 are connected to the same base station, the voice data sent from the user terminal 1 to the user terminal 2 can reach the user terminal 2 only through the path "user terminal 1 → base station → user terminal 2"; similarly, the voice data transmitted from the ue 2 to the ue 1 can reach the ue 1 only through the path "ue 2 → bs → ue 1". When the ue 1 and the ue 3 are connected to different base stations, the voice data sent from the ue 1 to the ue 3 needs to go through the path "ue 1 → bs 1 → cn → bs 3 → ue 3" before reaching the ue 3; similarly, the voice data from the ue 3 to the ue 1 needs to go through the path "ue 3 → bs 3 → cn → bs 1 → ue 1" to reach the ue 1.
As shown in fig. 8, an embodiment of the present invention provides a voice data offloading method, which specifically includes the following steps:
s301, receiving an uplink data message sent by a first user terminal.
S302, the VoLTE voice data message on the long term evolution in the uplink data message is analyzed and screened out.
S303, extracting the target terminal identification from the screened voice data message.
S304, determining whether the second user terminal identified by the target terminal identifier and the first user terminal are connected to the same base station, if so, executing S305, and if not, executing S306.
S305, encapsulating the voice data message layer by layer according to the air interface side protocol of the base station, and sending the encapsulated voice data message to a second user terminal.
S306, according to the base station network side protocol, the voice data message is encapsulated layer by layer, the encapsulated voice data message is transmitted to a core network through the network, and the core network sends the voice data message to a second user terminal.
According to the voice data distribution method provided by the embodiment of the invention, voice data is distributed at the base station side, so that a voice data transmission path between a first user terminal and a second user terminal which are connected to the same base station is shortened, the time delay of a voice data packet is reduced, the packet loss and error possibility of the voice data packet are reduced, the pressure of a core network can be relieved, and the utilization rate of the core network and the base station is improved.
Example four
As shown in fig. 9, a voice data offloading method provided in the fourth embodiment of the present invention is further optimized to determine, on the basis of the technical solution provided in the first embodiment, whether the second user terminal identified by the target terminal identifier and the first user terminal are connected to the same base station in step S104. Explanations of the same or corresponding terms as those of the above embodiments are omitted. Namely:
inquiring a UE entity table of a base station where the first user terminal is located according to the target terminal identification;
and judging whether the second user terminal identified by the target terminal identification and the first user terminal are connected to the same base station or not.
Based on the above optimization, as shown in fig. 9, a voice data splitting method provided in an embodiment of the present invention may include the following steps:
s401, receiving an uplink data message sent by a first user terminal.
S402, analyzing and screening the VoLTE voice data message in the uplink data message on the long term evolution.
S403, extracting the target terminal identification from the screened voice data message.
S404, according to the target terminal identification, inquiring a UE (User Equipment) entity table of a base station where the first User terminal is located.
Specifically, if the UE control entity can be queried according to the target terminal identifier, it indicates that the second user terminal identified by the target terminal identifier of the voice data packet of the first user terminal is located on the same base station as the first user terminal, and if the UE control entity cannot be queried according to the target terminal identifier, it indicates that the second user terminal identified by the target terminal identifier of the voice data packet of the first user terminal is not located on the same base station as the first user terminal.
Preferably, before step S404, the voice data splitting method further includes:
when a user terminal is connected to a certain base station, recording a user terminal identifier of the user terminal to a UE entity table;
when the user terminal leaves the base station, deleting the corresponding UE entity information related to the user terminal in the UE entity table;
the user terminal is the first user terminal or the second user terminal.
S405, judging whether the second user terminal identified by the target terminal identification and the first user terminal are connected to the same base station.
S406, if the second user terminal and the first user terminal are connected to the same base station, encapsulating the voice data message layer by layer according to a base station air interface side protocol, and sending the encapsulated voice data message to the second user terminal.
The voice data distribution method provided by the invention distributes the voice data at the base station side, thereby shortening the voice data transmission path between the first user terminal and the second user terminal connected to the same base station, reducing the time delay of the voice data packet and reducing the packet loss and error possibility of the voice data packet, relieving the pressure of a core network and improving the utilization rate of the core network and the base station.
EXAMPLE five
Fig. 10 to 12 are schematic structural diagrams of a voice data offloading system according to a fifth embodiment of the present invention, which is suitable for implementing a voice data offloading method according to the fifth embodiment of the present invention.
The system specifically comprises the following modules:
a message receiving module 51, configured to receive an uplink data message sent from a first user equipment;
the analysis screening module 52 is configured to analyze and screen out a VoLTE voice data packet over long term evolution in the uplink data packet;
an identifier extracting module 53, configured to extract a target terminal identifier from the screened voice data message;
a terminal determining module 54, configured to determine whether the second user terminal identified by the target terminal identifier and the first user terminal are connected to the same base station;
a first processing module 55, configured to encapsulate, layer by layer, the voice data packet according to a base station air interface side protocol if the terminal determining module determines that the second user terminal and the first user terminal are connected to the same base station, and send the encapsulated voice data packet to the second user terminal.
Preferably, the voice data splitting system further includes:
a second processing module 56, configured to, after the step of determining whether the second user terminal identified by the target terminal identifier and the first user terminal are connected to the same base station, encapsulate the voice data packet layer by layer according to a base station network side protocol if the terminal determining module determines that the second user terminal and the first user terminal are not connected to the same base station, transmit the encapsulated voice data packet to a core network through a network, and send the voice data packet to the second user terminal through the core network.
Preferably, the terminal determining module includes:
a terminal determining unit, configured to query, according to the target terminal identifier, a UE entity table of a base station where the first user terminal is located;
and the terminal judging unit is used for judging whether the second user terminal identified by the target terminal identification and the first user terminal are connected to the same base station.
Preferably, the voice data splitting system further includes:
the data storage module is used for recording a user terminal identifier of a user terminal to a UE entity table when the user terminal is connected to a certain base station;
and when the user terminal leaves the base station, deleting the corresponding UE entity information related to the user terminal in the UE entity table;
the user terminal is the first user terminal or the second user terminal.
Preferably, the voice data message includes voice data and a target terminal identifier.
The voice data shunting system provided by the invention shunts the voice data at the base station side, thereby shortening the voice data transmission path between the first user terminal and the second user terminal which are connected with the same base station, reducing the time delay of the voice data packet and reducing the packet loss and error possibility of the voice data packet, relieving the pressure of a core network and improving the utilization rate of the core network and the base station.
The system can execute the method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A voice data distribution method is characterized by comprising the following steps:
receiving an uplink data message sent by a first user terminal;
analyzing and screening the VoLTE voice data message on the long term evolution in the uplink data message;
extracting a target terminal identification from the screened voice data message;
judging whether a second user terminal identified by the target terminal identification and the first user terminal are connected to the same base station or not;
if the second user terminal and the first user terminal are connected to the same base station, encapsulating the voice data message layer by layer according to a base station air interface side protocol, and sending the encapsulated voice data message to the second user terminal;
the base station comprises an air interface side protocol stack, a network side protocol stack and a voice distribution processing module;
the air interface side protocol stack comprises a PHY layer, an MAC layer, an RLC layer and a PDCP layer which are arranged in sequence;
the network side protocol stack comprises a GTP layer;
the voice shunt processing module is arranged between the PDCP layer and the GTP layer.
2. The method of claim 1, wherein after the step of determining whether the second user terminal identified by the target terminal identifier and the first user terminal are connected to the same base station, the method further comprises:
and if the second user terminal and the first user terminal are not connected to the same base station, encapsulating the voice data message layer by layer according to a base station network side protocol, transmitting the encapsulated voice data message to a core network through the network, and transmitting the voice data message to the second user terminal through the core network.
3. The method of claim 1, wherein the step of determining whether the second ue identified by the target ue and the first ue are connected to a same base station comprises:
inquiring a UE entity table of a base station where the first user terminal is located according to the target terminal identification;
and judging whether the second user terminal identified by the target terminal identification and the first user terminal are connected to the same base station or not.
4. The voice data splitting method according to claim 1, further comprising:
when a user terminal is connected to a certain base station, recording a user terminal identifier of the user terminal to a UE entity table;
when the user terminal leaves the base station, deleting the corresponding UE entity information related to the user terminal in the UE entity table;
the user terminal is the first user terminal or the second user terminal.
5. The voice data offloading method of claim 1, wherein the voice data packet comprises voice data and a target terminal identifier.
6. A voice data splitting system, comprising:
the message receiving module is used for receiving an uplink data message sent by a first user terminal;
the analysis screening module is used for analyzing and screening the VoLTE voice data message on the long term evolution in the uplink data message;
the identification extraction module is used for extracting a target terminal identification from the screened voice data message;
a terminal judging module, configured to judge whether the second user terminal identified by the target terminal identifier and the first user terminal are connected to the same base station;
the first processing module is used for encapsulating the voice data message layer by layer according to a base station air interface side protocol and sending the encapsulated voice data message to the second user terminal if the terminal judgment module judges that the second user terminal and the first user terminal are connected to the same base station;
the base station comprises an air interface side protocol stack, a network side protocol stack and a voice distribution processing module;
the air interface side protocol stack comprises a PHY layer, an MAC layer, an RLC layer and a PDCP layer which are arranged in sequence;
the network side protocol stack comprises a GTP layer;
the voice shunt processing module is arranged between the PDCP layer and the GTP layer.
7. The voice data splitting system according to claim 6, further comprising:
and a second processing module, configured to encapsulate, after the step of determining whether the second user terminal identified by the target terminal identifier and the first user terminal are connected to the same base station, the voice data packet layer by layer according to a base station network side protocol if the terminal determining module determines that the second user terminal and the first user terminal are not connected to the same base station, transmit the encapsulated voice data packet to a core network through a network, and send the voice data packet to the second user terminal through the core network.
8. The voice data splitting system according to claim 6, wherein the terminal determining module comprises:
a terminal determining unit, configured to query, according to the target terminal identifier, a UE entity table of a base station where the first user terminal is located;
and the terminal judging unit is used for judging whether the second user terminal identified by the target terminal identification and the first user terminal are connected to the same base station.
9. The voice data splitting system according to claim 6, further comprising:
the data storage module is used for recording a user terminal identifier of a user terminal to a UE entity table when the user terminal is connected to a certain base station;
and when the user terminal leaves the base station, deleting the corresponding UE entity information related to the user terminal in the UE entity table;
the user terminal is the first user terminal or the second user terminal.
10. The voice data splitting system of claim 6, wherein the voice data message comprises voice data and a target terminal identification.
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