CN113016166B

CN113016166B - Multimedia service transmission method and device

Info

Publication number: CN113016166B
Application number: CN201880099477.6A
Authority: CN
Inventors: 刘江华; 李秉肇; 官磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-11-14
Filing date: 2018-11-14
Publication date: 2023-01-06
Anticipated expiration: 2038-11-14
Also published as: CN113016166A; WO2020097835A1

Abstract

A transmission method and device of multimedia service are used for solving the problem that the transmission efficiency is relatively low due to the fact that different resources are occupied when the existing versions of the same multimedia service with different transmission qualities are transmitted. The method comprises the following steps: the terminal receives the service information of the first version and receives the service information of the second version; the service information of the first version comprises data of the first version of the first service, and the service information of the second version comprises incremental data of the second version of the first service relative to the first version of the first service; and the terminal combines the data of the first version and the incremental data to obtain the data of the second version of the first service. According to the scheme, only incremental data of a relatively low version is transmitted for transmission of a high version, so that the transmission efficiency of different versions of the same service can be improved, and repeated transmission among different versions can be reduced.

Description

Multimedia service transmission method and device

Technical Field

The present application relates to the field of communication technologies and multimedia technologies, and in particular, to a method and an apparatus for transmitting a multimedia service.

Background

With the rapid development of the internet and the popularization of large-screen multifunctional user equipment, a large number of mobile multimedia services and various high-bandwidth multimedia services, such as video conference, television broadcasting, video on demand, advertisement, online education, interactive games and the like, appear, and the services can meet the multi-service requirements of mobile users.

Users may use high-quality versions such as ultra-definition and high-definition in a high-speed quality fidelity (wifi) network environment or a 4th Generation Communications system (4 g) network environment, and use low-quality versions such as standard definition in a 3 rd Generation Communications system (3 g) or a 2 nd Generation Communications system (2 g) network environment.

At present, versions of the same multimedia service with different transmission qualities occupy different resources when transmitted, resulting in relatively low transmission efficiency.

Disclosure of Invention

The embodiment of the application provides a transmission method of a multimedia service, which is used for solving the problem that the transmission efficiency is relatively low because versions of the same multimedia service with different transmission qualities occupy different resources when being transmitted.

In a first aspect, an embodiment of the present application provides a method for transmitting a multimedia service, including:

the terminal receives the service information of the first version and receives the service information of the second version;

the service information of the first version comprises data of the first version of the first service, and the service information of the second version comprises incremental data of the second version of the first service relative to the first version of the first service;

and the terminal combines the data of the first version and the incremental data to obtain the data of the second version of the first service.

According to the scheme, only incremental data of a relatively low version is transmitted for transmission of a high version, so that the transmission efficiency of different versions of the same service can be improved, and repeated transmission among different versions can be reduced.

In one possible design, the first version of data includes a first data packet, the first version of service information further includes a merged sequence number of the first data packet, the incremental data includes a second data packet, and the second version of service information further includes a merged sequence number of the second data packet; the merging sequence number of the first data packet is the same as the merging sequence number of the second data packet, and the merging, by the terminal, the data of the first version and the incremental data includes: and the terminal merges the first data packet and the second data packet according to the merged sequence number.

According to the scheme, the method for obtaining the high-version data by combining the incremental data of the high version and the low-version data is provided, only the combination serial number needs to be added, and the method is simple and easy to implement.

In one possible design, the first version of data includes a first packet and the delta data includes a second packet, and merging the first version of data and the delta data includes:

the terminal merges the first data packet and the second data packet according to the receiving time of the first data packet and the receiving time of the second data packet;

wherein the receiving time of the first data packet is the same as the receiving time of the second data packet, or a difference between the receiving time of the second data packet and the receiving time of the second data packet is smaller than a threshold value.

According to the scheme, another method for acquiring the high-version data by combining the incremental data of the high version and the low-version data is provided, the transmitted information does not need to be increased, the signaling overhead is saved, and the method is simple and easy to implement.

In one possible design, further comprising: and the terminal receives the threshold value sent by the network equipment or the server.

In one possible design, further comprising:

the terminal acquires a service identifier of a first version of the first service from first network equipment, and receives a service identifier of a second version of the first service;

the method for receiving the service information of the first version and the service information of the second version by the terminal comprises the following steps:

the terminal receives the service information of the first version based on the service identifier of the first version and receives the service information of the second version based on the service identifier of the second version;

the first network device is an access network device, a server or a core network device.

The above design identifies the version to which the received service information belongs through the service identifier.

In one possible design, the receiving, by the terminal, the first version of the service information includes:

the terminal receives the service information of the first version from the first access network equipment;

the terminal receives the service information of the second version, and the service information comprises the following steps:

the terminal receives the service information of the second version from the second access network equipment;

wherein the first access network device and the second access network device are different devices.

By the design, different versions of service information are received by different access network devices, so that the transmission efficiency of high versions is improved, and repeated transmission among different versions is reduced.

In one possible design, the coverage of the first access network device includes the coverage of the second access network device.

According to the design, the large station transmits the low version, the small station is generally close to the terminal, the small station transmits the high version, and the large station and the small station are combined, so that the transmission efficiency can be improved.

In one possible design, further comprising:

the terminal sends a request message to second network equipment before receiving service information of a second version, wherein the request message is used for requesting incremental data of the second version relative to a first version of the first service; the second network device is an access network device, a server or a core network device.

In a second aspect, an embodiment of the present application provides a method for transmitting a multimedia service, including:

the access network equipment receives incremental data of a second version of the first service, wherein the incremental data of the second version is different from the data of the first version in the data required by the second version of the first service, and the transmission quality of the second version is higher than that of the first version;

and the access network equipment sends the incremental data of the second version to a terminal.

In one possible design, the receiving, by the access network device, incremental data of the second version of the first service sent by the server includes:

the access network equipment receives first service information of a second version sent by the server, wherein the first service information of the second version comprises incremental data of the second version, the incremental data of the second version comprises a first data packet, and the first service information of the second version also comprises a merging sequence number of the first data packet;

the access network device sends the incremental data of the second version to the terminal, and the incremental data comprises:

and the access network equipment sends the first service information of the second version to a terminal.

the access network equipment receives first service information of a second version sent by the server, wherein the first service information of the second version comprises incremental data of the second version, the incremental data of the second version comprises a first data packet, and the first service information of the second version also comprises auxiliary information of a merging sequence number of the first data packet;

before the access network device sends the incremental data of the second version to the terminal, the method further includes:

the access network equipment generates a merging sequence number of the first data packet according to the merging sequence number auxiliary information;

and the access network equipment sends second service information of a second version to the terminal, wherein the first service information of the second version comprises the incremental data of the second version, and the second service information of the second version also comprises the merging serial number of the first data packet.

the access network equipment receives first service information of a second version sent by the server, wherein the first service information of the second version comprises incremental data of the second version, the incremental data of the second version comprises a first data packet, and the first service information of the second version also comprises timestamp information of the first data packet;

the access network equipment sends the incremental data of the second version to the terminal, and the incremental data comprises the following steps:

and the access network equipment sends the first data packet to the terminal when determining that the time indicated by the timestamp information is reached.

In one possible design, before the sending, by the access network device, the second version of incremental data to the terminal, the method further includes: and the access network equipment receives a request message sent by the terminal, wherein the request message is used for requesting the incremental data of the second version.

In a third aspect, the present application provides an apparatus. The apparatus has a function of implementing the terminal according to the first aspect, for example, the apparatus includes a module, a unit, or means (means) corresponding to the step according to the first aspect, where the function, the unit, or the means (means) may be implemented by software, or implemented by hardware executing corresponding software.

In a possible design, the apparatus includes a processing unit and a transceiver unit, and the functions performed by the processing unit and the transceiver unit may correspond to the steps performed by the terminal device according to the first aspect.

In one possible design, the apparatus includes a processor, and may further include a transceiver, and the transceiver is configured to transmit and receive signals, and the processor executes program instructions to implement the method performed by the terminal device in any possible design or implementation manner of the first aspect.

Wherein the apparatus may further comprise one or more memories for coupling with the processor. The one or more memories may be integrated with the processor or separate from the processor, which is not limited in this application.

In one possible approach, the memory stores the necessary computer program instructions and/or data to implement the functionality of the terminal device referred to in the first aspect above. The processor may execute the computer program instructions stored in the memory to perform the method performed by the terminal device in any possible design or implementation manner of the first aspect.

In a fourth aspect, the present application provides an apparatus. The apparatus has a function of implementing the access network device according to the second aspect, and for example, the apparatus includes a module or a unit or a means (means) corresponding to the access network device executing the step according to the second aspect. The functions or units or means (means) may be implemented by software, or by hardware executing corresponding software.

In a possible design, the apparatus includes a processing unit and a transceiver unit, and functions performed by the processing unit and the transceiver unit may correspond to steps performed by the access network device according to the second aspect.

In another possible design, the communication device includes a processor, and may further include a transceiver, and the transceiver is configured to transmit and receive signals, and the processor executes the program instructions to implement the method executed by the access network device in any possible design or implementation manner of the second aspect.

In one possible approach, the memory stores the necessary computer program instructions and/or data to implement the functionality of the access network device referred to in the second aspect above. The processor may execute the computer program instructions stored in the memory to perform the method performed by the access network device in any possible design or implementation of the second aspect described above.

In a fifth aspect, the present application provides a chip, where the chip may be in communication with a memory, or the chip may include a memory, and the chip executes program instructions stored in the memory to implement corresponding functions of the terminal device or the access network device in the foregoing first aspect to the second aspect.

In a sixth aspect, the present application provides a computer storage medium storing computer readable instructions, which, when executed, enable corresponding functions of the terminal device or the access network device referred to in the first to second aspects.

In a seventh aspect, the present application further provides a computer program product containing a software program, which when run on a computer causes the respective functions of the terminal device or the access network device designed in the first to second aspects to be implemented.

In an eighth aspect, the present application further provides a communication system, where the communication system includes the terminal device and/or the access network device as referred to in the first aspect to the fourth aspect.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application;

fig. 2 is a flowchart of a transmission method of a multimedia service according to an embodiment of the present application;

fig. 3 is a schematic diagram illustrating a transmission method of a multimedia service according to an embodiment of the present application;

fig. 4 is a schematic flow chart of a transmission method of a multimedia service according to an embodiment of the present application;

fig. 5 is a schematic flow chart of another transmission method for multimedia services according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an apparatus 600 according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a base station 700 according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication device 800 according to an embodiment of the present application.

Detailed Description

The embodiments of the present application may be applied to a network system, such as an NR system, an LTE system, a long term evolution-advanced (LTE-a) system, an enhanced long term evolution-advanced (LTE) communication system, and the like, and may also be extended to a wireless fidelity (WiFi), a worldwide interoperability for microwave access (wimax), a future wireless communication system, and a 3 GPP-related cellular system. A specific communication system architecture applied in the embodiment of the present application may be as shown in fig. 1, and include at least two network devices and a terminal, and it should be noted that the number of the network devices and the terminals in the communication system shown in fig. 1 is not limited in the embodiment of the present application.

Hereinafter, some terms in the present application are explained so as to be easily understood by those skilled in the art.

1) An access network device is a device for accessing a terminal to a wireless network in a communication system. The access network device is a node in a radio access network, which may also be referred to as a base station, and may also be referred to as a Radio Access Network (RAN) node (or device). Currently, some examples of access network devices are: a gbb, a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) Access Point (AP), etc. In addition, in a network structure, the access network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node. The structure separates the protocol layers of the eNB in a Long Term Evolution (LTE) system, the functions of part of the protocol layers are controlled in the CU in a centralized way, the functions of the rest part or all of the protocol layers are distributed in the DU, and the CU controls the DU in a centralized way.

2) The terminal related to the application is a terminal capable of bearing multimedia services. The terminal may be a terminal device, or may be one or more chips in the terminal device, or one or more processors in the terminal device, or one or more modules in the terminal device, which is not specifically limited in this embodiment of the present invention. A terminal device, which may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, etc. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (smart security), a wireless terminal in city (smart city), a wireless terminal in home (smart home), and the like.

3) The service related to the present application may be a Multimedia Broadcast Multicast Service (MBMS). MBMS data is generally provided in a broadcast form. For example, in LTE, each cell may have several subframes for transmitting MBMS data, all UEs may receive MBMS data by receiving the several subframes, UEs may receive MBMS subframes in an idle state or a connected state, and the eNB may not need to know which UEs are receiving. Of course, for the terminal receiving the MBMS service in the connected state, the eNB may obtain which connected UEs are receiving or interested UEs are receiving the MBMS service by initiating a counting (counting) process.

In LTE, MBMS employs a multicast/multicast single frequency network (MBSFN) technology or a single cell point to multipoint (SC-PTM) technology.

MBMSFN requires the simultaneous transmission of identical waveforms from multiple cells. In this way, the UE can regard a plurality of MBSFN cells as one large cell. Furthermore, the UE will not only not suffer from inter-cell interference of neighboring cell transmissions, but will also benefit from superposition of signals from multiple MBSFN cells. A plurality of cells transmitting the same waveform form an MBSFN area, and a plurality of PMCH (physical multicast channel) channels can be configured inside the area, wherein each channel can carry MBMS service.

SC-PTM is a multicast transmission technique. The first multicast technology introduced by LTE is eMBMS, in which all cells in an area require to send the same content at the same time, and if UEs are distributed only in some cells, the transmission efficiency of eMBMS is relatively low, so the 3GPP standard further proposes SC-PTM technology, in which a cell schedules service data to multiple UEs at the same time through a G-RNTI, and each G-RNTI may be associated with an MBMS service. Therefore, in one area, only the cell containing the user needs to send data, and the cell not containing the user does not need to send data, so that air interface resources are saved.

In the prior art, different versions of the same multicast service need different resource transmission, for example, CCTV1 standard definition needs 1M bandwidth, high definition needs 2M bandwidth, and 3M bandwidth is consumed altogether, and actually, high-definition video is realized by adding pixel points to a standard definition video screen, which is equivalent to that information transmitted in the 2M high definition actually contains data transmitted in the 1M standard definition. And the existing repeated transmission of high definition and standard definition causes relatively low transmission efficiency.

Based on this, embodiments of the present application provide a method and an apparatus for transmitting a multimedia service, so as to solve the problem of low transmission efficiency in the prior art. The method and the device are based on the same inventive concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not described again.

Referring to fig. 2, a flow chart of a transmission method of a multimedia service provided in the embodiment of the present application is shown.

S201, a terminal receives service information of a first version and service information of a second version, wherein the service information of the first version comprises data of the first version of a first service, and the service information of the second version comprises incremental data of the second version of the first service relative to the first version of the first service.

In the following description, the incremental data of the second version with respect to the first version of the first service is simply referred to as the incremental data of the second version.

The terminal executing the transmission method of the multimedia service in the embodiment of the present application may be a terminal device, or may be one or more chips in the terminal device, or one or more processors in the terminal device, or one or more modules in the terminal device, which is not specifically limited in this embodiment of the present application.

Illustratively, the incremental data of the second version is data different from the data of the first version in the data required by the second version of the first service, and the transmission quality of the second version of the first service is higher than that of the first version of the first service. For example, the first service is a video service, the second version of the video service may be a high definition version, and the first version may be a standard definition version.

Optionally, before the terminal receives the service information of the first version and receives the service information of the second version, the terminal may first obtain the service of the first version and the service identifier of the second version.

The terminal may first obtain the service identifier of the first version and the service identifier of the second version, and may obtain the service identifiers from an access network device, or obtain the service identifiers from a server (server), or obtain the service identifiers from a core network device. This is not a particular limitation of the present application. Illustratively, the terminal may be obtained through User Service Description (USD) information. The USD information is the information in the server.

The first service in this embodiment may be a multicast service, where the multicast service may be identified by a Temporary Mobile Group Identity (TMGI), and the TMGI may be used to uniquely determine one multicast service. And the UE receives the service after acquiring the TMGI of the specific service. For example, CCTV1 is sent by MBMS, if the UE receives CCTV1, it needs to determine the TMGI of CCTV1, and then determine the sending resource of the TMGI in the cell to receive the service.

For example, service identities corresponding to different versions of a service may be represented by a TMGI or a TMGI plus other identities, such as TMGI + session ID. For example, TMG1 represents a standard definition version of service 1 and TMG2 represents a high definition incremental version of service 1. For another example, session1 of TMGI1 represents a standard definition version of service 1, and session2 of TMG1 represents a high definition incremental version of service 1.

S202, the terminal combines the data of the first version and the incremental data of the second version to obtain the data of the second version of the first service.

According to the scheme provided by the embodiment of the application, all data are not transmitted aiming at the enhancement data, but the data corresponding to the pixel points added on the basis of the basic data are transmitted, so that the repeated transmission of the data among different versions is avoided, and the transmission efficiency can be improved.

In a possible embodiment, the first version of the service information and the second version of the service information may be sent by different access network devices. For example, the first version of the service information may be sent to the terminal by the first access network device, and the second version of the service information may be sent to the terminal by the second access network device. When receiving the service information of the first version, the terminal may receive the service information of the first version from the first access network device; when receiving the service information of the second version, the terminal may receive the service information of the second version from a second access network device; wherein the first access network device and the second access network device are different devices. The first access network device may be a large coverage base station and the second access network device may be a small coverage base station. The coverage of the first access network device may include the coverage of the second access network device, in other words, the second access network device is located within the coverage of the first access network device. Illustratively, the first access network device may be a large tower and the second access network device may be a small station.

In a possible embodiment, when the terminal merges the first version of data and the second version of incremental data, the method may be implemented as follows:

a first possible implementation:

the first version of data comprises a first data packet, the first version of service information further comprises a merging sequence number of the first data packet, the second version of incremental data comprises a second data packet, and the second version of service information further comprises a merging sequence number of the second data packet; the merged sequence number of the first data packet is the same as the merged sequence number of the second data packet.

And the terminal merges the first data packet and the second data packet according to the merged sequence number.

The merged sequence number is used to indicate which data packets in the second version of incremental data and the first version of data have an association relationship therebetween. In the embodiment of the present application, the same merging sequence number is configured for the same frame data of two versions. For example, for standard definition data of CCTV1 in the first version service and a high-level incremental version of CCTV1 in the second version service, the same merging sequence number may be set for the standard definition data and the high definition data of the same data frame. Of course, the corresponding relationship between the merged serial numbers may be established in advance and configured in the server and the terminal. Therefore, the terminal determines which data packets need to be combined according to the combination serial numbers corresponding to the data packets. In addition, the data included in one data frame in the embodiment of the present application may constitute one data packet.

The merged sequence number may be added by the server and sent to the access network device along with the version data, or may be added by the access network device. Illustratively, the merging sequence number is added by the access network device, and the server may carry merging sequence number auxiliary information of the data packet when transmitting the data packet to the access network device, so that the access network device generates the merging sequence number according to the merging sequence number auxiliary information. The merged sequence number auxiliary information may be generation time information of the data packet or sequence number information of the data packet. The combined sequence number added by the base station can be placed at the SN of the PDCP or the SN of the RLC.

In a first possible example, the merged sequence number is added by the server and the first version of data is sent by the first access network device to the terminal. The first access network device receives first service information of a first version sent by a server, where the first service information of the first version includes data of the first version, the data of the first version includes a second data packet, and the first service information of the first version also includes a merging sequence number of the second data packet; and the first access network equipment sends the first service information of the first version to a terminal.

The second version of the incremental data is sent by the second access network device to the terminal. The second access network device receives the first service information of the second version sent by the server, where the first service information of the second version includes incremental data of the second version, the incremental data of the second version includes a first data packet, and the first service information of the second version also includes a merging sequence number of the first data packet; and the second access network equipment sends the first service information of the second version to a terminal. And the terminal combines the first data packet and the second data packet according to the combined serial number.

In a second possible example, the merged sequence number is added by the access network device and the first version of data is sent by the first access network device to the terminal. The first access network equipment receives first service information of a first version sent by the server, wherein the first service information of the first version comprises data of the first version, the data of the first version comprises a second data packet, and the first service information of the first version also comprises merging serial number auxiliary information of the second data packet; the access network equipment generates a merging sequence number of the second data packet according to the merging sequence number auxiliary information; the access network equipment sends first version second service information to a terminal, wherein the first version first service information comprises the first version data, and the first version second service information also comprises a merging sequence number of the second data packet.

The second version of data is sent by the second access network device to the terminal. The second access network device receives first service information of a second version sent by the server, wherein the first service information of the second version comprises incremental data of the second version, the incremental data of the second version comprises a first data packet, and the first service information of the second version also comprises merging sequence number auxiliary information of the first data packet; the second access network equipment generates a merged serial number of the first data packet according to the merged serial number auxiliary information; and the second access network equipment sends second service information of a second version to a terminal, wherein the first service information of the second version comprises incremental data of the second version, and the second service information of the second version also comprises a merging sequence number of the first data packet. And the terminal merges the first data packet and the second data packet according to the merged sequence number.

A second possible implementation:

the merging the first version of data and the second version of incremental data, including:

It should be noted that, in the embodiment of the present application, the first data packet generally refers to any data packet in the data of the first version, and the second data packet generally refers to any data packet in the incremental data of the second version.

In the following, a detailed description is given to a flow of a first possible implementation manner, where a first version of service information is sent to a terminal by a first access network device, and a second version of service information is sent to the terminal by a second access network device. The first service is taken as a video service as an example, the first version is a standard definition version, and the second version is a high definition version. The first version is a base video and the second version is an enhanced video.

Referring to fig. 3, the coverage of the first access network device includes the coverage of the second access network device. The terminal receives the base video from the first access network device and the enhanced video from the second access network device. The specific process is shown in FIG. 4:

s401, the terminal obtains service identifiers corresponding to different versions of the video service, for example, a service identifier corresponding to a first version (for example, a standard definition version), and obtains a service identifier corresponding to a second version (for example, a high definition version). In fig. 4, taking the USD from the server (server) as an example, the other obtaining manners refer to the description in the embodiment corresponding to fig. 2, and are not repeated here. In fig. 4, TMGI1 is taken as a service identifier of standard definition version, and TMGI2 is taken as a service identifier of high definition version.

S402, the server sends the data of the standard definition version to the first access network equipment.

For example, the merged sequence number of each packet included in the marked-up version of data may be added by the server, and the merged sequence number of each packet may be sent to the first access network device along with each packet one. Illustratively, the combined sequence number of the data and the data packet may be transmitted as included in the standard-definition version of the service information.

The merged sequence number of each packet included in the tagged version of data may be added by the first access network device, and the server may send the merged sequence number assist information for each packet to the first access network device along with each packet one.

And S403, the server sends the incremental data of the high-definition version to the second access network equipment.

For example, the merged sequence number of each data packet included in the high definition version of data may be added by the server, and the merged sequence number of each data packet may be sent to the second access network device by the server together with each data packet.

For example, the incremental data and the merged sequence number of the data packet may be included in the high definition version of the traffic information.

The merged sequence number of each packet included in the high definition version of data may be added by the first access network device, and the server may send the merged sequence number side information of each packet to the second access network device along with each packet by the server one.

S404, after receiving the data of the standard definition version, the first access network device sends the data of the standard definition version and a merging Serial Number (SN) of each data packet included in the data of the standard definition version to the terminal.

Illustratively, when the first access network device receives the merged sequence number auxiliary information of each data packet and each data packet, the merged sequence number of the corresponding data packet is generated based on the merged sequence number auxiliary information of each data packet.

And S405, after receiving the high-definition version data, the second access network device sends the high-definition version data and a merging Serial Number (SN) of each data packet included in the high-definition version data to the terminal.

Illustratively, the second access network device receives the merging sequence number auxiliary information of each data packet and generates the merging sequence number of the corresponding data packet based on the merging sequence number auxiliary information of each data packet.

And S406, after the terminal receives the data of the standard-definition version and the incremental data of the high-definition version, merging the incremental data of the high-definition version and the data of the standard-definition version based on the merging serial number.

Illustratively, if the merging sequence number of the first data packet in the high-definition version of incremental data is the same as the merging sequence number of the second data packet in the standard-definition version of data, the terminal merges the first data packet and the second data packet.

In a possible implementation manner, before the server sends the high-definition version of the incremental data to the second access network device, S407, the server receives a request message from the terminal through the second access network device or the core network device, where the request message is used to request the high-definition version of the incremental data. The request message may also carry a service identifier TMGI2 of a high definition version.

In the following, a detailed description is given to a flow of a second possible implementation manner, where the service information of the first version is sent to the terminal by the first access network device, and the service information of the second version is sent to the terminal by the second access network device. The first service is taken as a video service as an example, the first version is a standard definition version, and the second version is a high definition version. The first version is a base video and the second version is an enhanced video.

Take the architecture shown in fig. 3 as an example. The specific process is shown in FIG. 5:

s501, see S401, and will not be described herein.

S502, the server sends the data of the standard definition version and the timestamp information of the standard definition version to the first wireless network device. Illustratively, the data and timestamp information may be sent in a tagged version of the business information. The timestamp information of the standard definition version is used for indicating the sending time of the data packet in the data of the standard definition version.

And S503, the server sends the incremental data of the high-definition version and the timestamp information of the high-definition version to the second access network device.

And S504, after the first access network device receives the data of the standard-definition version and the timestamp information of the standard-definition version, sending each data packet included in the data of the standard-definition version to the terminal according to the time indicated by the timestamp information of the standard-definition version.

The timestamp information of the high definition version is used for indicating the sending time of the data packet in the data of the high definition version.

And S505, after the second access network device receives the incremental data of the high-definition version and the timestamp information of the high-definition version, sending each data packet included in the incremental data of the high-definition version to the terminal according to the time indicated by the timestamp information of the high-definition version.

Illustratively, the timestamp information of the high-definition version includes timestamp information of the first data packet; the second access network device determines to send the first data packet to the terminal when the time indicated by the timestamp information of the first data packet is reached.

And S506, after the terminal receives the data of the standard-definition version and the incremental data of the high-definition version, merging the incremental data of the high-definition version and the data of the standard-definition version based on the receiving time of the data packet.

Illustratively, if the receiving time of the first data packet in the incremental data of the high-definition version is the same as the receiving time of the second data packet in the data of the standard-definition version or the difference between the receiving times is smaller than a threshold value, the terminal merges the first data packet and the second data packet. The threshold value may be sent to the terminal by the access network device or the server. The threshold value may also be preconfigured in the terminal.

In a possible implementation manner, before the server sends the high-definition version of the incremental data to the second access network device, S507, the server receives a request message from the terminal through the second access network device or the core network device, where the request message is used to request the high-definition version of the incremental data. The request message may also carry a service identifier TMGI2 of a high definition version.

Based on the same inventive concept as the method embodiment described above, referring to fig. 6, a schematic structural diagram of an apparatus 600 provided in the embodiment of the present application may include a transceiver unit 610 and a processing unit 620.

In a possible implementation manner, the apparatus may be applied to a terminal device, and the transceiving unit 610 may be configured to receive the service information of the first version and receive the service information of the second version by the terminal. Illustratively, the transceiver unit 610 performs step S201, or S404, or S405, or S504, or S505. The processing unit 620 may be configured to generate a reference signal, and the like, and the specific processing unit 620 may be configured to implement the functions performed by the terminal in the embodiments corresponding to fig. 2, or fig. 4 and fig. 5.

In one possible embodiment, the apparatus may be used in an access network device. Such as for a second access network device, the transceiver unit 610, transmits a second version (high definition version) of the data, or receives request information, etc. Illustratively, the transceiving unit 610 may be configured to perform step S403, or step S405, or step S503, or step S505. A processing unit 620 may be used to generate a merging sequence number, determine a time indicated by the timestamp information, and so on. The specific processing unit 620 may be configured to implement the functions performed by the second access network device or the first access network device in the embodiment corresponding to fig. 4 or fig. 5.

Fig. 7 is a schematic structural diagram of an access network device provided in an embodiment of the present application, for example, a schematic structural diagram of a base station. As shown in fig. 7, the base station can be applied to the system shown in fig. 1, and performs the functions of the network device (or the base station) in the above method embodiments. The base station 700 may include one or more radio frequency units, such as a Remote Radio Unit (RRU) 701 and one or more baseband units (BBUs) (which may also be referred to as digital units, DUs) 702. The RRU 701 may be referred to as a transceiver unit, a transceiver circuit, or a transceiver, etc., and may include at least one antenna 7011 and a radio frequency unit 7012. The RRU 701 is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals and baseband signals, for example, for sending the reference signals described in the above embodiments to a terminal device. The BBU 702 is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 701 and the BBU 702 may be physically disposed together, or may be physically disposed separately, that is, distributed base stations.

The BBU 702 is a control center of the base station, and may also be referred to as a processing unit, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and the like. For example, the BBU (processing unit) 702 can be used to control a base station to perform the operation procedures of the above method embodiments with respect to a network device (or base station).

In an example, the BBU 702 may be formed by one or more boards, and the boards may jointly support a radio access network with a single access indication (e.g., an LTE network or a 5G network), or may respectively support radio access networks with different access systems (e.g., an LTE network, a 5G network or other networks). The BBU 702 further includes a memory 7021 and a processor 7022, the memory 7021 being for storing necessary instructions and data. The processor 7022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedures of the method embodiments described above with respect to the network device (or the base station). The memory 7021 and the processor 7022 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

Fig. 8 shows a schematic structural diagram of a communication device 800. The apparatus 800 may be used to implement the method described in the above method embodiments, and reference may be made to the description in the above method embodiments. The communication apparatus 800 may be a chip, a network device (e.g., a base station), and the like.

The communication device 800 includes one or more processors 801. The processor 801 may be a general purpose processor, a special purpose processor, or the like. For example, a baseband processor, or a central processor. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control a communication device (e.g., a base station, a terminal, or a chip), execute a software program, and process data of the software program. The communication device may include a transceiving unit to enable input (reception) and output (transmission) of signals. For example, the communication device may be a chip, and the transceiving unit may be an input and/or output circuit of the chip, or a communication interface. The chip can be used for a terminal or a base station or other network equipment. As another example, the communication device may be a base station or a network device, and the transceiver unit may be a transceiver, a radio frequency chip, or the like.

In one possible design, the communication apparatus 800 includes one or more processors 801 to implement the method performed by the terminal in the embodiment shown in fig. 2, fig. 4, or fig. 5.

In one possible design, the communication apparatus 800 includes one or more processors 801, and may implement the method performed by the access network device (first access network device, second access network device) in the embodiments shown in fig. 2, fig. 4, or fig. 5.

In one possible design, the communication device 800 includes means (means) for generating traffic information and means (means) for transmitting traffic information. The functions of means for generating traffic information and means for transmitting traffic information may be implemented by one or more processors. The reference signal may be generated, for example, by one or more processors, and transmitted through a transceiver, or an interface of an input/output circuit, or chip. The reference signal can be found in the related description of the above method embodiments.

In one possible design, the communications device 800 may include means (means) for receiving traffic information. The service information may be received, for example, through a transceiver, or an interface of an input/output circuit, or chip.

Optionally, the processor 801 may also implement other functions besides the method of the embodiment shown in fig. 2, or fig. 4 and fig. 5.

Alternatively, in one design, the processor 801 may execute instructions to cause the communication apparatus 800 to perform the methods described in the above method embodiments. The instructions may be stored in whole or in part within the processor, such as instructions 803, or in whole or in part in a memory 802 coupled to the processor, such as instructions 804, or collectively may cause the communications apparatus 800 to perform the methods described in the above-described method embodiments, via

instructions

803 and 804.

In yet another possible design, the communication apparatus 800 may also include a circuit, which may implement the functions of the network device (or the base station) in the foregoing method embodiments.

In yet another possible design, the communication device 800 may include one or more memories 802 having instructions 804 stored thereon, which are executable on the processor to cause the communication device 800 to perform the methods described in the above method embodiments. Optionally, the memory may further store data therein. Instructions and/or data may also be stored in the optional processor. For example, the one or more memories 802 may store the corresponding relationships described in the above embodiments, or related parameters or tables and the like involved in the above embodiments. The processor and the memory may be provided separately or may be integrated together.

In yet another possible design, the communications apparatus 800 may further include a transceiver unit 805 and an antenna 806. The processor 801 may be referred to as a processing unit and controls a communication device (terminal or base station). The transceiver unit 805 may be referred to as a transceiver, a transceiving circuit, or a transceiver, etc. and is used for implementing transceiving functions of the communication device through the antenna 806.

The present application also provides a communication system, which includes the aforementioned multiple network devices (or base stations) and a terminal.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip having signal processing capability. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The present application further provides a computer-readable medium, on which a computer program is stored, where the computer program is executed by a computer to implement the communication method in any of the above method embodiments.

The embodiment of the present application further provides a computer program product, and when executed by a computer, the computer program product implements the communication method described in any of the above method embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is configured to execute the communication method according to any one of the above method embodiments.

It should be understood that the processing device may be a chip, the processor may be implemented by hardware or software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated in the processor, located external to the processor, or stand-alone.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Additionally, the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that in the embodiment of the present application, "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also be determined from a and/or other information.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present application without departing from the scope of the embodiments of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

1. A method for transmitting multimedia services, comprising:

the terminal receives first version service information sent by first access network equipment in a Multimedia Broadcast Multicast Service (MBMS) mode, and receives second version service information sent by second access network equipment in an MBMS mode; the first access network device and the second access network device are different devices;

the service information of the first version comprises data of the first version of the first service, the service information of the second version comprises incremental data of the second version of the first service relative to the first version of the first service, and the first service is multicast service;

2. The method of claim 1, wherein the first version of data comprises a first data packet, the first version of traffic information further comprises a merged sequence number of the first data packet, the incremental data comprises a second data packet, and the second version of traffic information further comprises a merged sequence number of the second data packet; the merging sequence number of the first data packet is the same as the merging sequence number of the second data packet, and the terminal merges the data of the first version and the incremental data, including:

3. The method of claim 1, wherein the first version of data comprises a first packet and the delta data comprises a second packet, and merging the first version of data and the delta data comprises:

4. The method of claim 3, further comprising:

and the terminal receives the threshold value sent by the network equipment or the server.

5. The method of any one of claims 1-4, further comprising:

6. The method of claim 1, wherein the coverage of the first access network device comprises the coverage of the second access network device.

7. The method of any of claims 1-4, 6, further comprising:

8. A method for transmitting multimedia services, comprising:

the method comprises the steps that access network equipment receives incremental data of a second version of a first service, wherein the incremental data of the second version is data, different from data of a first version, of data required by the second version of the first service, the transmission quality of the second version is higher than that of the first version, and the first service is multicast service;

the access network equipment sends the incremental data of the second version to a terminal in a Multimedia Broadcast Multicast Service (MBMS) mode;

the method for receiving the incremental data of the second version of the first service sent by the server by the access network equipment comprises the following steps:

9. The method of claim 8, wherein the receiving, by the access network device, the incremental data for the second version of the first service sent by the server comprises:

10. The method of claim 8, wherein the receiving, by the access network device, the incremental data for the second version of the first traffic sent by the server comprises:

11. The method of any of claims 8-10, wherein prior to the access network device sending the second version of incremental data to a terminal, further comprising:

and the access network equipment receives a request message sent by the terminal, wherein the request message is used for requesting the incremental data of the second version.

12. A communication device configured to perform the method of any one of claims 1-7.

13. A communication device configured to perform the method according to any one of claims 8-11.

14. A communications apparatus, comprising: a processor coupled with a memory;

a memory for storing a computer program;

a processor for executing a computer program stored in the memory to cause the apparatus to perform the method of any of claims 1-7.

15. A communications apparatus, comprising: a processor coupled with a memory;

a memory for storing a computer program;

a processor for executing a computer program stored in the memory to cause the apparatus to perform the method of any of claims 8-11.

16. A readable storage medium, comprising a program or instructions for performing the method of any of claims 1-11 when the program or instructions are run on a computer.