CN109922533B - Data transmission method, multicast coordination entity equipment, base station equipment and eMBMS system - Google Patents
Data transmission method, multicast coordination entity equipment, base station equipment and eMBMS system Download PDFInfo
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Abstract
According to the data transmission method, the multicast coordination entity, the base station system and the eMBMS system, data transmission information is obtained through a base station side of the eMBMS system, a network state message is generated according to the data transmission information, the network state message is sent to the multicast coordination entity, a source coding rate adjustment indication is determined according to the network state message through the multicast coordination entity, the source coding rate adjustment indication is sent to the user terminal to indicate the user terminal to adjust the source coding rate, and therefore the adjusted source coding rate is adaptive to the network state of the eMBMS system, the data transmission capacity of the eMBMS system is improved, the requirements of key task voice communication are met, the dispatching capacity of an eMBMS session is improved, and voice call experience of a user is guaranteed.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method, a multicast coordination entity device, a base station device, and an eMBMS system.
Background
Evolved Multimedia broadcast multicast Service (eMBMS) is an enhanced broadcast multicast technology applied to LTE networks proposed on the basis of 3GPP Rel-9 protocol.
The radio resource allocation scheme in eMBMS systems is typically only applicable to traditional broadcast television services and not to mission critical voice communications (e.g., MCPTT). In an eMBMS system, an existing voice data transmission mode generally includes a fixed modulation coding mode and an adaptive modulation coding mode, where the fixed modulation coding mode cannot provide link adaptive transmission, so that a data transmission rate that the eMBMS can provide depends on a user with the worst quality of a data link, which may result in that user experience of an important client in an MBSFN (Multimedia Broadcast multicast service Single Frequency Network) Area (MA, MBSFN Area) cannot be guaranteed; although the adaptive Modulation and Coding Scheme (MCS) may be adaptively adjusted according to the fed-back channel quality, since radio resource allocation in the eMBMS system does not have a frequency division concept and service data transmission is performed in a full-bandwidth time division manner, a session with a large data volume may not be scheduled in the case of air interface congestion, and user experience of an important client may not be guaranteed.
Therefore, an intelligent and effective data transmission scheme is urgently needed at present to improve data transmission capacity in the eMBMS system, so that the data transmission capacity meets the requirements of mission-critical voice communication, the scheduling capacity of eMBMS conversation is further improved, and the use experience of users is guaranteed.
Disclosure of Invention
In view of this, the present invention provides a data transmission method, a multicast coordination entity device, a base station device, and an eMBMS system, so as to solve the technical problems that the data transmission capability of the current eMBMS system is poor and the requirement of mission-critical voice communication cannot be well met.
In order to achieve the purpose, the invention provides the following technical scheme:
a data transmission method is applied to a multicast coordination entity in an evolved multimedia broadcast multicast service (eMBMS) system; the eMBMS system also comprises a base station side and a user terminal of the base station side; the method comprises the following steps:
receiving a network state message sent by a base station side;
determining a source coding rate adjustment indication according to the network state message;
sending the source coding rate adjustment indication to the user terminal; the source coding rate adjustment indication is used for indicating the user terminal to adjust the source coding rate, so that the adjusted source coding rate is adaptive to the network state of the eMBMS system, and the data transmission capability of the eMBMS system is improved.
A data transmission method is applied to a base station side in an evolved multimedia broadcast multicast service (eMBMS) system; the eMBMS system also comprises a multicast coordination entity and a user terminal at the base station side; the method comprises the following steps:
acquiring data transmission information;
generating a network state message according to the data transmission information;
sending the network status message to the multicast coordination entity; the network status message is used for determining a source coding rate adjustment indication by the multicast coordination entity;
receiving a source coding rate adjustment indication sent by the multicast coordination entity;
sending the source coding rate adjustment indication to the user terminal; the source coding rate adjustment indication is used for indicating the user terminal to adjust the source coding rate, so that the adjusted source coding rate is adaptive to the network state of the eMBMS system, and the data transmission capability of the eMBMS system is improved.
A multicast coordination entity is applied to an evolved multimedia broadcast multicast service (eMBMS) system; the eMBMS system also comprises a base station side and a user terminal of the base station side; the multicast coordination entity comprises:
the state message receiving unit is used for receiving the network state message sent by the base station side;
a code rate indication determining unit, configured to determine a source coding rate adjustment indication according to the network status message;
a code rate indication sending unit, configured to send the source coding rate adjustment indication to the user terminal; the source coding rate adjustment indication is used for indicating the user terminal to adjust the source coding rate, so that the adjusted source coding rate is adaptive to the network state of the eMBMS system, and the data transmission capability of the eMBMS system is improved.
A base station system is applied to a base station side in an evolved multimedia broadcast multicast service (eMBMS) system; the eMBMS system also comprises a multicast coordination entity and a user terminal at the base station side; the base station system includes:
a transmission information acquisition unit for acquiring data transmission information;
a state message generating unit, configured to generate a network state message according to the data transmission information;
a status message sending unit, configured to send the network status message to the multicast coordination entity; the network status message is used for determining a source coding rate adjustment indication by the multicast coordination entity;
a code rate indication receiving unit, configured to receive a source coding rate adjustment indication sent by the multicast coordination entity;
a code rate indication forwarding unit, configured to send the source coding rate adjustment indication to the user terminal; the source coding rate adjustment indication is used for indicating the user terminal to adjust the source coding rate, so that the adjusted source coding rate is adaptive to the network state of the eMBMS system, and the data transmission capability of the eMBMS system is improved.
A multicast coordination entity apparatus, comprising: a first memory and a first processor;
wherein the first memory is to store a first program code;
the first processor is configured to call the first program code stored in the first memory to implement the data transmission method.
A base station system apparatus comprising: the second memory and the second processor;
wherein the second memory is for storing a second program code;
the second processor is configured to call the second program code stored in the second memory to implement the data transmission method as described above.
An evolved multimedia broadcast multicast service (eMBMS) system, the eMBMS system comprising: the multicast coordination entity device and the base station device are provided.
According to the technical scheme, in the data transmission method, the multicast coordination entity equipment, the base station equipment and the eMBMS system, the multicast coordination entity determines the information source coding rate adjustment indication according to the network state information sent by the base station side, sends the determined information source coding rate adjustment indication to the user terminal at the base station side, and instructs the user terminal to adjust the information source coding rate (Codec rate) according to the information source coding rate adjustment indication, so that the adjusted information source coding rate is adaptive to the network state of the eMBMS system, the data transmission capability in the eMBMS system is improved, the requirement of key task voice communication is met, the dispatching capability of the eMBMS session is improved, and the use experience of users is guaranteed.
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 embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present application;
fig. 2 is another flowchart of a data transmission method according to an embodiment of the present disclosure;
fig. 3 is a flowchart of a data transmission method according to an embodiment of the present application;
fig. 4 is another flowchart of a data transmission method according to an embodiment of the present application;
fig. 5 is a flowchart of a data transmission method according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a multimedia coordination entity according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a base station system according to an embodiment of the present application;
fig. 8 is a data transmission diagram of an eMBMS system according to an embodiment of the present application.
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The data transmission method, the multicast Coordination Entity and the base station system provided by the embodiment of the invention are all applied to an Evolved Multimedia broadcast multicast service (eMBMS) system, and the eMBMS system generally comprises a Multicast Coordination Entity (MCE), an Evolved Packet Core (EPC), an IP Multimedia Subsystem (IMS), an Evolved base station (eNB), and a User Equipment (UE). In the technical scheme provided by the embodiment of the invention, the MCE sends the information source coding rate adjustment indication corresponding to the network state message to the UE according to the network state message sent by the eNB side, so that the UE adjusts the information source coding rate (Codec rate) according to the received information source coding rate adjustment indication, and the adjusted information source coding rate is adapted to the network state of the eMBMS system, thereby improving the data transmission capability in the eMBMS system, enabling the data transmission capability to meet the voice communication requirement of a key task, further improving the scheduling capability of the eMBMS session, and ensuring the use experience of a user.
Referring to fig. 1, fig. 1 is a flowchart of a data transmission method according to an embodiment of the present disclosure.
The data transmission method in the embodiment is applied to a multicast coordination entity MCE in an evolved multimedia broadcast multicast service (eMBMS) system; the eMBMS system further comprises a base station eNB side and a user terminal UE on the eNB side.
As shown in fig. 1, the data transmission method includes:
s101: and receiving the network state message sent by the base station side.
In the eMBMS system, a base station eNB side detects the data transmission condition, generates a corresponding network state message according to the detection result and sends the network state message to a multicast coordination entity MCE.
The network status message is used to characterize the network status, for example, a network overload message used to characterize the network overload, a network underload message used to characterize the network in an underload status, and so on.
S102: and determining a source coding rate adjustment indication according to the network state message.
After receiving a network state message sent by a base station eNB side, a multicast coordination entity MCE determines a source coding rate adjustment indication according to the network state message.
Optionally, the source coding rate adjustment indication has a corresponding relationship with the network status message.
S103: and sending the source coding rate adjustment indication to the user terminal.
The source coding rate adjustment indication is used for instructing the user equipment UE to adjust a source coding rate (Codec rate). And adapting the adjusted information source coding rate (Codec rate) to the network state of the eMBMS system so as to improve the data transmission capability of the eMBMS system.
After determining the corresponding source coding rate adjustment indication, the multicast coordination entity MCE sends the determined source coding rate adjustment indication to the user equipment UE, for instructing the user equipment UE to adjust the source coding rate (Codec rate).
The data transmission method provided by the embodiment is applied to a multicast coordination entity MCE in an evolved multimedia broadcast multicast service (eMBMS) system, the multicast coordination entity MCE determines an information source coding rate adjustment indication according to a network state message sent by a base station eNB side, sends the determined information source coding rate adjustment indication to a user terminal UE (user equipment) at the base station eNB side, and instructs the user terminal UE to adjust an information source coding rate (Codec code rate) according to the information source coding rate adjustment indication, so that the adjusted information source coding rate is adapted to the network state of the eMBMS system, and the data volume of the information source data is adaptively adjusted, thereby improving the data transmission capability in the eMBMS system, meeting the requirements of key task voice communication, improving the scheduling capability of an eMBMS session, and further ensuring the use experience of users.
Referring to fig. 2, fig. 2 is another flowchart of a data transmission method according to an embodiment of the present disclosure.
The data transmission method in the embodiment is applied to a multicast coordination entity MCE in an evolved multimedia broadcast multicast service (eMBMS) system; the eMBMS system further comprises a base station eNB side and a user terminal UE on the eNB side.
As shown in fig. 2, the data transmission method includes:
s201: and receiving the network state message sent by the base station side.
The network state message at least comprises a network overload message and a network underload message. When the network state message sent by the eNB side of the base station is a network overload message, the network is relatively congested at present, air interface resources are in short supply, a voice call is easy to be blocked, and even certain eMBMS sessions cannot be effectively scheduled; when the network state message sent by the base station eNB side is a network low-load message, the network is smooth at present, air interface resources are sufficient, and a higher-quality data transmission service can be provided.
Optionally, the network status message may be implemented by using an Overload notification (eMBMS Overload notification) in the eMBMS system, and the Overload notification (eMBMS Overload notification) with the status of "Overload" is used as the network Overload message; and, adding an "Underload" state to the overload notification (eMBMS overload notification), and using the overload notification (eMBMS overload notification) in the "Underload" state as the network low load message.
S202: and when the network state message is a network overload message, determining that the source coding rate adjustment indication is a source coding rate reduction indication.
When the network is overloaded, the air interface resources are in short supply, and the transmission of the multi-path voice service data cannot be guaranteed, under this condition, the multicast coordination entity MCE determines that the information source coding rate adjustment indication is the information source coding rate down-regulation indication for indicating the user terminal UE to down-regulate the information source coding rate (Codec code rate), so as to reduce the data volume of the information source data, and ensure that the information source data can be normally transmitted under the condition that the air interface resources are in short supply, thereby improving the fluency of voice communication, and simultaneously, the transmission of the multi-path voice service data can also be guaranteed.
S203: and when the network state message is a network low load message, determining the source coding rate adjustment indication as a source coding rate up-regulation indication.
When the network is under a low load, the air interface resources are sufficient, and data transmission with a large data volume can be supported, under this condition, the multicast coordination entity MCE determines the information source coding rate adjustment indication as the information source coding rate up-regulation indication for indicating the user equipment UE to up-regulate the information source coding rate (Codec code rate), so as to increase the data volume of the information source data, improve the integrity of the information source data, and improve the definition of voice communication.
Optionally, the network status message and the source coding rate adjustment indication have a corresponding relationship, where the source coding rate down adjustment indication corresponds to the network overload message; the source coding rate up-regulation indication corresponds to a network low load message. And the multicast coordination entity MCE determines the source coding rate adjustment indication corresponding to the received network state message according to the received network state message based on the corresponding relation between the network state message and the source coding rate adjustment indication.
S204: and sending the source coding rate down regulation indication or the source coding rate up regulation indication to the user terminal.
After receiving the source coding rate adjustment indication, the user terminal UE determines a target source coding rate according to the received source coding rate adjustment indication, and performs data transmission by adopting the target source coding rate.
Optionally, if the user equipment UE receives the source coding rate down-regulation indication, determining a first target source coding rate according to the current source coding rate, where the first target source coding rate is less than the current source coding rate; and if the user terminal UE receives the source coding rate up-regulation indication, determining a second target source coding rate according to the current source coding rate, wherein the second target source coding rate is greater than the current source coding rate.
The data transmission method provided by the implementation is applied to a multicast coordination entity MCE in an evolved multimedia broadcast multicast service eMBMS system, the multicast coordination entity MCE determines a corresponding signal source coding rate down-regulation indication or a signal source coding rate up-regulation indication according to a network overload message or a network low-load message sent by a base station eNB side, sends the determined signal source coding rate down-regulation indication or the signal source coding rate up-regulation indication to a user terminal UE at the base station eNB side, and instructs the user terminal UE to correspondingly down-regulate or up-regulate the signal source coding rate according to the signal source coding rate down-regulation indication or the signal source coding rate up-regulation indication, so that the data volume of the signal source data is reduced under the network overload state, the signal source data can be normally transmitted under the condition of air interface resource shortage, the fluency of voice communication is improved, and the transmission of multi-path voice service data is ensured, the interruption probability of the eMBMS session is reduced, and the service continuity is improved; under the low-load state of the network, the data volume of the information source data is increased so as to improve the integrity of the information source data, improve the definition of voice communication and play a role in voice enhancement.
Referring to fig. 3, fig. 3 is a flowchart of a data transmission method according to an embodiment of the present application.
The data transmission method provided by the embodiment is applied to a base station eNB side in an evolved multimedia broadcast multicast service (eMBMS) system; the eMBMS system further comprises a multicast coordination entity MCE and a user terminal UE at the side of the base station eNB.
As shown in fig. 3, the data transmission method includes:
s301: and acquiring data transmission information.
The data transmission information is information for characterizing a data transmission situation, for example, a size of a real-time data amount, a size of an air interface resource margin, and the like.
S302: and generating a network state message according to the data transmission information.
The base station eNB side can analyze the current network state, such as network overload, network low load and the like, according to the real-time data volume, the empty resource allowance and the like, and generate a corresponding network state message according to the current network state.
S303: and sending the network state message to the multicast coordination entity.
And the multicast coordination entity MCE determines an information source coding rate adjustment indication according to the network state message after receiving the network state message sent by the base station eNB side. Wherein the network status message is used for determining a corresponding source coding rate adjustment indication by the multicast coordination entity MCE.
S304: and receiving a source coding rate adjustment indication sent by the multicast coordination entity.
The source coding rate adjustment indication is used for instructing the user equipment UE to adjust a source coding rate (Codec rate). And adapting the adjusted information source coding rate to the network state of the eMBMS system so as to improve the data transmission capability of the eMBMS system.
After determining the corresponding source coding rate adjustment indication, the multicast coordination entity MCE needs to send the determined source coding rate adjustment indication to the user equipment UE through the base station eNB side, so as to instruct the user equipment UE to adjust the source coding rate (Codec rate).
S305: and sending the source coding rate adjustment indication to the user terminal.
Correspondingly, after receiving the source coding rate adjustment indication sent by the multicast coordination entity MCE, the base station eNB side forwards the received source coding rate adjustment indication to the user equipment UE to instruct the user equipment UE to adjust the source coding rate (Codec rate).
Optionally, the base station eNB side sends an information source coding rate adjustment indication (coded rate indication) to the UE through a Radio Resource Control (RRC) message or a new MAC Control element (MAC CE).
The data transmission method provided by this embodiment is applied to a base station eNB side in an evolved multimedia broadcast multicast service (eMBMS) system, the base station eNB side acquires data transmission information, generates a network status message according to the data transmission information, sends the network status message to a Multicast Coordination Entity (MCE), receives a source coding rate adjustment indication determined and sent by the Multicast Coordination Entity (MCE) according to the network status message, sends the source coding rate adjustment indication to a user terminal (UE) to instruct the user terminal (UE) to adjust a source coding rate (Codec code rate), so that the adjusted source coding rate is adapted to the network status of the eMBMS system, and equivalently, the data amount of a source is adaptively adjusted to adapt to the current network status, thereby improving the data transmission capability in the eMBMS system and enabling the eMBMS to meet the requirements of mission-critical voice communication, the scheduling capability of the eMBMS session is improved, and the use experience of a user is further guaranteed.
Referring to fig. 4, fig. 4 is another flowchart of a data transmission method according to an embodiment of the present disclosure.
The data transmission method provided by the embodiment is applied to a base station eNB side in an evolved multimedia broadcast multicast service (eMBMS) system; the eMBMS system further comprises a multicast coordination entity MCE and a user terminal UE on the base station eNB side.
As shown in fig. 4, the data transmission method includes:
s401: and acquiring the real-time data volume and the air interface resource allowance of the user interface in a preset time period.
The real-time data volume of the user plane and the air interface resource allowance in the preset time period are used as data transmission information, and the current data transmission condition can be reflected to a greater extent, so that a sufficient basis is provided for generating a corresponding network state message on the base station eNB side.
S402: and when the real-time data volume is greater than a preset data volume threshold value and the air interface resource allowance is less than a preset resource allowance threshold value, generating a network overload message.
The network status messages include network overload messages, which may also be referred to as network congestion messages. And the eNB side of the base station counts the real-time data volume of the user plane in a preset time period, monitors the current air interface resource allowance, and if the real-time data volume of the user plane is found to be larger than a preset data volume threshold value and the air interface resource allowance is smaller than a preset resource allowance threshold value in the preset time period, judges that the current network is in an overload state, and generates a corresponding network overload message.
The air interface resource margin is smaller than the preset resource margin threshold, which is generally caused by a large amount of air interface resources occupied by the high-priority eMBMS session, and meanwhile, the low-priority eMBMS session is not effectively scheduled.
S403: and when the real-time data volume is not greater than a preset data volume threshold value and the air interface resource allowance is not less than a preset resource allowance threshold value, generating a network low-load message.
The network status message comprises a network underload message. And when the real-time data volume is not greater than a preset data volume threshold value and the air interface resource allowance is not less than a preset resource allowance threshold value, indicating that the air interface resources have sufficient allowance which is not occupied and can provide a better data transmission service, judging that the current network is in a low-load state, and generating a corresponding network low-load message.
S404: and sending the network overload message or the network low load message to the multicast coordination entity.
The network overload message is used for determining a source coding rate down-regulation indication by the multicast coordination entity MCE; the network low load message is used for determining a source coding rate up-regulation indication by the multicast coordination entity MCE.
S405: and receiving a source coding rate down regulation indication or a source coding rate up regulation indication sent by the multicast coordination entity.
The source coding rate down regulation indication is used for indicating the user equipment UE to down regulate the source coding rate (Codec code rate); the source coding rate up-regulation indication is used for indicating the user equipment UE to up-regulate a source coding rate (Codec rate).
After determining the corresponding source coding rate down-regulation indication or source coding rate up-regulation indication, the multicast coordination entity MCE needs to send the determined source coding rate down-regulation indication or source coding rate up-regulation indication to the user equipment UE through the base station eNB side, so as to indicate the user equipment UE to down-regulate or up-regulate the source coding rate (Codec code rate).
S406: and sending the information source coding rate down regulation indication or the information source coding rate up regulation indication to the user terminal.
After receiving the source coding rate down-regulation indication or the source coding rate up-regulation indication sent by the multicast coordination entity MCE, the eNB side of the base station forwards the received source coding rate down-regulation indication or the received source coding rate up-regulation indication to the UE so as to indicate the UE to down-regulate or up-regulate the source coding rate. The base station eNB side plays a role in data forwarding between the multicast coordination entity MCE and the user terminal UE.
The data transmission method provided by this embodiment is applied to a base station eNB side in an evolved multimedia broadcast multicast service eMBMS system, where the base station eNB side generates a corresponding network overload message or network low load message according to a real-time data amount and an air interface resource margin of a user plane within a preset time period, and a preset data amount threshold and a preset resource margin threshold; then, the network overload message or the network low-load message is sent to the multicast coordination entity MCE, and the multicast coordination entity MCE receives a source coding rate down-regulation indication or a source coding rate up-regulation indication which is correspondingly determined and sent by the network overload message or the network low-load message, and then forwards the source coding rate down-regulation indication or the source coding rate up-regulation indication to the user terminal UE to indicate the user terminal UE to down-regulate or up-regulate the source coding rate (Codec code rate), so that the data volume of the source is adaptively regulated to adapt to the current network state, and the data transmission capability in the eMBMS system is improved, the requirement of key task voice communication is met, the dispatching capability of the eMBMS session is improved, and the use experience of users is further guaranteed.
Referring to fig. 5, fig. 5 is a flowchart illustrating a data transmission method according to an embodiment of the present disclosure.
The data transmission method provided by the embodiment is applied to a base station side in an evolved multimedia broadcast multicast service (eMBMS) system; the eMBMS system further comprises a multicast coordination entity and a user terminal at the base station side.
As shown in fig. 5, the data transmission method includes:
s501: and acquiring a voice definition improving request or a voice fluency improving request.
The data transmission information acquired by the base station eNB is information for characterizing the data transmission situation. The data transmission information is not limited to information such as the size of the real-time data volume and the amount of the air interface resource margin, and the data transmission information may also include a voice effect improvement request sent by the user through the user terminal, for example, a voice clarity improvement request, a voice fluency improvement request, and the like.
Optionally, the speech intelligibility enhancement request and the speech fluency enhancement request are both sent by a user of the user equipment UE through the user equipment UE. For example, the user terminal UE sends a speech effect enhancement request to the base station eNB through an RRC message or a newly added MAC CE.
Optionally, when the user of the user terminal UE is an important user, a speech intelligibility enhancement request or a speech fluency enhancement request sent by the important user through the user terminal UE is obtained. That is to say, the eNB side of the base station may further determine the importance level of the user, and only obtain the speech intelligibility enhancement request and the speech fluency enhancement request sent by the important user, but not obtain the speech intelligibility enhancement request and the speech fluency enhancement request sent by the ordinary user, thereby providing a better service for the important user.
S502: and when the voice fluency improving request is acquired, generating a network overload message.
The data transmission information acquired by the base station eNB side comprises a voice fluency improving request, the voice fluency is poor due to network congestion, and the phenomenon of pause often occurs, so that a user is prompted to send the voice fluency improving request to the base station eNB side to improve voice call experience.
S503: and when the data transmission information comprises a voice definition improving request, generating a network low-load message.
The data transmission information acquired by the base station eNB side comprises a voice definition improvement request, and the voice definition is not high due to the fact that the data volume of the information source data is small, so that a user is prompted to send the voice definition improvement request to the base station eNB side to improve voice call experience.
S504: and sending the network overload message or the network low load message to the multicast coordination entity.
S505: and receiving a source coding rate down regulation indication or a source coding rate up regulation indication sent by the multicast coordination entity.
S506: and sending the information source coding rate down regulation indication or the information source coding rate up regulation indication to the user terminal.
Steps S504 to S506 are similar to steps S404 to S406 in the foregoing embodiment, and reference may be made to the foregoing embodiment for details, which are not repeated herein.
In an example, the data transmission information acquired by the eNB side of the base station may include a real-time data amount of the user plane, an air interface resource allowance and a voice effect improvement request at the same time within a preset time period, and when a first network status message generated according to the real-time data amount of the user plane and the air interface resource allowance within the preset time period is different from a second network status message generated according to the voice effect improvement request, the first network status message may be used as a reference, the second network status message may also be used as a reference, and the first network status message may be flexibly set according to an actual situation.
Optionally, different importance levels are respectively set for the real-time data volume and the air interface resource allowance of the user plane within a preset time period, and for the voice effect improvement request. And generating a corresponding network state message according to the importance of the real-time data volume and the air interface resource allowance of the user plane in a preset time period and the importance of the voice effect promotion request. For example, the corresponding network status message is generated according to the data transmission information with higher importance.
The data transmission method provided by the embodiment is applied to a base station eNB side in an evolved multimedia broadcast multicast service (eMBMS) system, and the base station eNB side generates a corresponding network overload message or a corresponding network low-load message according to a voice fluency improving request or a voice definition improving request; and then sending the network overload message or the network low-load message to the multicast coordination entity MCE, receiving a source coding rate down-regulation indication or a source coding rate up-regulation indication which is correspondingly determined and sent by the multicast coordination entity MCE according to the network overload message or the network low-load message, and then forwarding the source coding rate down-regulation indication or the source coding rate up-regulation indication to the user terminal UE so as to indicate the user terminal UE to down-regulate or up-regulate the source coding rate (Codec rate), thereby adaptively regulating the data volume of the source to adapt to the voice call demand of the user and ensuring the use experience of the user.
For the foregoing data transmission method, the embodiment of the present application further provides a corresponding multimedia coordination entity MCE, a base station system, and an eMBMS system, where the multimedia coordination entity MCE, the base station system, and the eMBMS system are respectively used to implement the data transmission method provided in the foregoing embodiment of the present application, and the following described multimedia coordination entity MCE, the base station system, and the eMBMS system may be referred to in correspondence with specific contents of the data transmission method described above.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a multimedia coordination entity according to an embodiment of the present disclosure.
The multimedia coordination entity MCE provided in this embodiment is applied to an evolved multimedia broadcast multicast service eMBMS system; the eMBMS system further comprises a base station eNB side and a user terminal UE on the base station eNB side.
As shown in fig. 6, the multimedia coordination entity MCE comprises:
a status message receiving unit 101, configured to receive a network status message sent by a base station side;
a code rate indication determining unit 102, configured to determine a source coding rate adjustment indication according to the network status message;
a code rate indication sending unit 103, configured to send the source coding rate adjustment indication to the user terminal; the source coding rate adjustment indication is used for indicating the user terminal to adjust the source coding rate, so that the adjusted source coding rate is adaptive to the network state of the eMBMS system, and the data transmission capability of the eMBMS system is improved.
Optionally, the network status message includes a network overload message or a network underload message; the code rate indication determining unit 102 is specifically configured to:
when the network state message is a network overload message, determining that a source coding rate adjustment indication is a source coding rate reduction indication;
and when the network state message is a network low load message, determining the source coding rate adjustment indication as a source coding rate up-regulation indication.
The multicast coordination entity MCE provided by this embodiment is applied to an evolved multimedia broadcast multicast service eMBMS system, and determines a source coding rate adjustment indication according to a network state message sent by a base station eNB, and sends the determined source coding rate adjustment indication to a user equipment UE at the base station eNB, and instructs the user equipment UE to adjust a source coding rate (Codec rate) according to the source coding rate adjustment indication, so that the adjusted source coding rate is adapted to a network state of the eMBMS system, so as to improve a data transmission capability of the eMBMS system, thereby improving a voice data transmission capability in the eMBMS system, satisfying a key task voice communication requirement, improving a scheduling capability of an eMBMS session, and further ensuring a user experience.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a base station system according to an embodiment of the present disclosure.
The base station system provided by the embodiment is applied to a base station eNB side in an evolved multimedia broadcast multicast service eMBMS system; the eMBMS system further comprises a multicast coordination entity MCE and a user terminal UE at the side of the base station eNB.
As shown in fig. 7, the base station system includes:
a transmission information acquisition unit 201 for acquiring data transmission information;
a status message generating unit 202, configured to generate a network status message according to the data transmission information;
a status message sending unit 203, configured to send the network status message to the multicast coordination entity; the network status message is used for determining a source coding rate adjustment indication by the multicast coordination entity;
a code rate indication receiving unit 204, configured to receive a source coding rate adjustment indication sent by the multicast coordination entity;
a code rate indication forwarding unit 205, configured to send the source coding rate adjustment indication to the user equipment; the source coding rate adjustment indication is used for indicating the user terminal to adjust the source coding rate, so that the adjusted source coding rate is adaptive to the network state of the eMBMS system, and the data transmission capability of the eMBMS system is improved.
Optionally, the data transmission information includes: the real-time data volume and the air interface resource allowance of the user interface in a preset time period; the status message generating unit 202 is specifically configured to:
when the real-time data volume is larger than a preset data volume threshold value and the air interface resource allowance is smaller than a preset resource allowance threshold value, generating a network overload message;
and when the real-time data volume is not greater than a preset data volume threshold value and the air interface resource allowance is not less than a preset resource allowance threshold value, generating a network low-load message.
Optionally, the data transmission information includes: a speech intelligibility enhancement request, or a speech fluency enhancement request; the status message generating unit 202 is specifically configured to:
when the data transmission information comprises a voice fluency lifting request, generating a network overload message;
and when the data transmission information comprises a voice definition improving request, generating a network low-load message.
Optionally, the transmission information obtaining unit 201 is specifically configured to:
and when the user of the user terminal is an important user, acquiring a voice definition improving request or a voice fluency improving request sent by the important user through the user terminal.
The base station system provided by the embodiment is applied to the base station eNB side in the evolved multimedia broadcast multicast service (eMBMS) system, acquires data transmission information, generating a network state message according to the data transmission information, sending the network state message to the multicast coordination entity MCE, receiving a source coding rate adjustment indication determined and sent by the multicast coordination entity MCE according to the network state message, sending the source coding rate adjustment indication to the user equipment UE so as to indicate the user equipment UE to adjust a source coding rate (Codec rate), thereby adapting the adjusted source coding rate to the network state of the eMBMS system, thereby increasing data transmission capabilities in an eMBMS system, enabling it to meet mission critical voice communication requirements, and then the scheduling capability of the eMBMS session is improved, and further the use experience of the user is guaranteed.
The embodiment of the application also provides an evolved multimedia broadcast multicast service (eMBMS) system, wherein the eMBMS system comprises the Multicast Coordination Entity (MCE) in the embodiment and the base station system in the embodiment, and the base station system is applied to a base station eNB side in the eMBMS system.
Referring to fig. 8, fig. 8 is a schematic diagram of data transmission of an eMBMS system according to an embodiment of the present application.
As shown in fig. 8, the eMBMS system at least includes a multicast coordination entity MCE, an evolved packet core EPC, an IP multimedia subsystem IMS, an evolved base station eNB, and a user terminal UE. And taking the user terminal UE as a first user terminal, the eMBMS system at least also comprises a second user terminal UE-2 for carrying out data transmission with the first user terminal UE.
The data transmission process of the eMBMS system is as follows:
the second user terminal UE-2 is used as an opposite end of the first user terminal UE, the Codec rate R0 is adopted by default, and uplink data is sent to the first user terminal UE in a unicast manner, and the first user terminal UE receives corresponding downlink data (e.g., RTP media stream) based on the eMBMS system.
The base station eNB side can acquire data transmission information through network congestion detection and voice effect feedback sent by the first user terminal UE, generate corresponding network state information, and then send the generated network state information to the multicast coordination entity MCE.
The data transmission information obtained through network congestion detection may include a real-time data volume of a user plane and an air interface resource allowance within a preset time period; the voice effect feedback sent by the first UE may include a voice effect improvement request, such as a voice clarity improvement request and a voice fluency improvement request.
The network status message is implemented by using an Overload notification (eMBMS Overload notification) in the eMBMS system, and the status of the Overload notification (eMBMS Overload notification) is "Overload" or "underrload".
After receiving the network state message, the multicast coordination entity MCE determines a Codec rate (source coding rate) adjustment indication corresponding to the network state message. For example, the multicast coordination entity MCE determines the Codec rate down-regulation indication according to the Overload notification with the state of "Overload", and determines the Codec rate up-regulation indication according to the Overload notification with the state of "Underload".
And the multicast coordination entity MCE sends the determined Codec rate adjustment instruction to the eNB side of the base station.
And the base station eNB side forwards the received Codec rate adjustment instruction to the first user terminal UE.
And the first user terminal UE is used for determining a target Codec rate R1 together with the second user terminal UE-2 according to the Codec rate adjustment instruction.
The first user terminal UE and the second user terminal UE-2 are configured to perform data transmission by using the target Codec rate R1.
Specifically, after receiving the Codec rate adjustment instruction, the first user terminal UE may determine a proposed Codec rate R1, and then send a Codec rate adjustment request to the second user terminal UE-2 through an application layer message, where the Codec rate adjustment request carries information of the proposed Codec rate R1.
When a second user terminal UE-2 receives a Codec rate adjustment request carrying information of a suggested Codec rate R1, determining whether a suggested Codec rate R1 is adopted, if so, sending a Codec rate confirmation message to the first user terminal UE, and determining the suggested Codec rate R1 as a target Codec rate; and if not, sending a Codec rate rejection message to the first user terminal UE.
And after the first user terminal UE receives the Codec code rate confirmation message sent by the second user terminal UE-2, determining the recommended Codec code rate R1 as a target Codec code rate. Furthermore, the first user terminal UE and the second user terminal UE-2 jointly determine a target Codec rate R1, and may perform data transmission by using the target Codec rate R1.
After the first user terminal UE receives the Codec rate rejection message sent by the second user terminal UE-2, the first user terminal UE and the second user terminal UE-2 continue to transmit data by using the current Codec rate R0.
The evolved multimedia broadcast multicast service (eMBMS) system provided by the embodiment of the application acquires data transmission information through a base station eNB side, generates a network state message according to the data transmission information, and sends the network state message to the Multicast Coordination Entity (MCE); and determining an information source coding rate adjustment indication according to a network state message sent by the base station eNB side through a multicast coordination entity MCE, sending the determined information source coding rate adjustment indication to a user terminal UE at the base station eNB side, and indicating the user terminal UE to adjust the information source coding rate (Codec code rate) according to the information source coding rate adjustment indication, so that the data volume of information source data is adaptively adjusted, the data transmission capacity in the eMBMS system is improved, the data transmission capacity meets the requirement of key task voice communication, the dispatching capacity of eMBMS session is improved, and the use experience of a user is guaranteed.
An embodiment of the present application further provides a multicast coordination entity device, including: a first memory and a first processor;
wherein the first memory is to store a first program code;
the first processor is configured to call the first program code stored in the first memory to implement the data transmission method.
A base station system apparatus comprising: the second memory and the second processor;
wherein the second memory is for storing a second program code;
the second processor is configured to call the second program code stored in the second memory to implement the data transmission method as described above.
Correspondingly, an evolved multimedia broadcast multicast service (eMBMS) system comprises: the multicast coordination entity equipment and the base station equipment.
Finally, it is further 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 apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by software plus a necessary hardware platform, and certainly can be implemented by hardware, but in many cases, the former is a better embodiment. With this understanding in mind, the technical solutions of the present application may be embodied in whole or in part in the form of a software product, which may be stored in a storage medium such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments of the present application.
The embodiments in the present description 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. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principle and the embodiment of the present application are explained by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, the specific embodiments and the application range may be changed. In view of the above, the description should not be taken as limiting the application.
Claims (10)
1. A data transmission method is characterized in that the method is applied to a multicast coordination entity in an evolved multimedia broadcast multicast service (eMBMS) system; the eMBMS system also comprises a base station side and a user terminal of the base station side; the method comprises the following steps:
the multicast coordination entity receives a network state message sent by a base station side, wherein the network state message is realized by adopting overload notification in the eMBMS system;
the multicast coordination entity determines a source coding rate adjustment indication according to the network state message;
the multicast coordination entity sends the source coding rate adjustment indication to the user terminal; the source coding rate adjustment indication is used for indicating the user terminal to adjust the source coding rate, so that the adjusted source coding rate is adaptive to the network state of the eMBMS system, the data size of the source data is adaptively adjusted, and the data transmission capability of the eMBMS system is improved.
2. The method of claim 1, wherein the network status message comprises a network overload message or a network underload message; the determining, according to the network status message, a source coding rate adjustment indication includes:
when the network state message is a network overload message, determining that a source coding rate adjustment indication is a source coding rate reduction indication;
and when the network state message is a network low-load message, determining that the source coding rate adjustment indication is a source coding rate up-regulation indication.
3. The method of claim 1, wherein the user terminal is a first user terminal; the eMBMS system further includes: a second user terminal for data transmission with the first user terminal;
the first user terminal is used for determining a target source coding rate together with the second user terminal according to the source coding rate adjustment indication;
and the first user terminal and the second user terminal are used for carrying out data transmission by adopting the target information source coding rate.
4. A data transmission method is characterized in that the method is applied to a base station side in an evolved multimedia broadcast multicast service (eMBMS) system; the eMBMS system also comprises a multicast coordination entity and a user terminal at the base station side; the method comprises the following steps:
the base station side acquires data transmission information;
the base station side generates a network state message according to the data transmission information, wherein the network state message is realized by adopting overload notification in the eMBMS system;
the base station side sends the network state message to the multicast coordination entity; the network status message is used for determining a source coding rate adjustment indication by the multicast coordination entity;
the base station side receives a source coding rate adjustment indication sent by the multicast coordination entity;
the base station side sends the information source coding rate adjustment indication to the user terminal; the information source coding rate adjustment indication is used for indicating the user terminal to adjust the information source coding rate, so that the adjusted information source coding rate is adaptive to the network state of the eMBMS system, the data size of the information source data is adaptively adjusted, and the data transmission capability of the eMBMS system is improved.
5. The method of claim 4, wherein the data transmission information comprises: the real-time data volume and the air interface resource allowance of the user interface in a preset time period; the generating a network status message according to the data transmission information includes:
when the real-time data volume is larger than a preset data volume threshold value and the air interface resource allowance is smaller than a preset resource allowance threshold value, generating a network overload message;
and when the real-time data volume is not greater than a preset data volume threshold value and the air interface resource allowance is not less than a preset resource allowance threshold value, generating a network low-load message.
6. The method of claim 4, wherein the data transmission information comprises: a voice clarity improvement request, or a voice fluency improvement request; the generating a network status message according to the data transmission information includes:
when the data transmission information comprises a voice fluency lifting request, generating a network overload message;
and when the data transmission information comprises a voice definition improving request, generating a network low-load message.
7. The method of claim 6, wherein the obtaining data transmission information comprises:
and when the user of the user terminal is an important user, acquiring a voice definition improving request or a voice fluency improving request sent by the important user through the user terminal.
8. A multicast coordination entity apparatus, comprising: a first memory and a first processor;
wherein the first memory is to store a first program code;
the first processor is configured to call the first program code stored in the first memory to implement the data transmission method according to any one of claims 1 to 3.
9. A base station apparatus, comprising: the second memory and the second processor;
wherein the second memory is for storing a second program code;
the second processor is used for calling the second program code stored in the second memory to realize the data transmission method according to any one of claims 4 to 7.
10. An evolved multimedia broadcast multicast service (eMBMS) system, the eMBMS system comprising: the multicast coordination entity apparatus of claim 8, in combination with the base station apparatus of claim 9.
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