WO2016106608A1

WO2016106608A1 - Media resource transmission device and method

Info

Publication number: WO2016106608A1
Application number: PCT/CN2014/095674
Authority: WO
Inventors: 殷慧; 蔺同宇; 梁家伟; 田春长
Original assignee: 华为技术有限公司
Priority date: 2014-12-30
Filing date: 2014-12-30
Publication date: 2016-07-07
Also published as: CN106170967A; CN106170967B

Abstract

The present invention provides a media resource transmission device and method. A first media resource transmission device receives a content request message of a first user equipment, the content request message of the first user equipment containing information of content required by the first user equipment; and the first media resource transmission device sends the content required by the first user equipment to the first user equipment, the content required by the first user equipment being buffered in the first media resource transmission device or a second media resource transmission device, and the first media resource transmission device and the second media resource transmission device being disposed in a public transportation means where the first user equipment is located. In this way, capacity expansion of a local area network is realized for a public transportation means, downloading of required content from the local area network by more users is supported, and when a user has a great demand for high-bandwidth resources such as videos, the user directly downloads the required content from the first media resource transmission device and the second media resource transmission device, thereby improving transmission efficiency of the high-bandwidth resources.

Description

Media resource transmission device and method

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a media resource transmission device and method.

Background technique

With the development of mobile communication, many metro companies have cooperated with mobile operators to start the 4G network construction project of the subway to reach the 4G coverage of the subway and achieve the smooth access of subway signals. Coupled with the large screen of smart mobile terminals, users are increasingly demanding mobile video. The subway is a high-risk place for mobile phones to use mobile Internet. The huge traffic, especially the peak traffic, makes the demand for mobile video bandwidth at a high level. Here, the demand for in-vehicle video bandwidth is predicted as follows: It is estimated that there are 70 concurrent users per car, the video user activation rate is 10%, and the single-user video access bandwidth requirement is 1.5M, so the bandwidth requirement of the bicycle box is 10.5M. Assuming that the vehicle has 6 cars and the base station covers 2 vehicles, the total bandwidth requirement under the base station is 126M. However, the bandwidth provided by the current 4G network is about 20M, which is much smaller than the bandwidth requirement of 126M in the video of the subway. That is to say, the bandwidth provided by the mobile network cannot meet the bandwidth requirement of the subway watching video, which is also the problem to be solved by the present invention.

At present, the industry has also given a variety of solutions to the above problems. Among them, the Content Delivery Network (CDN) is a mechanism for making content transmission faster and more stable. A research direction. Specifically, a CDN usually consists of two main parts, a centralized Global Server Load Balance (GSLB) device and many boundary servers deployed in multiple locations. The content distribution mechanism of the CDN includes: the UE's DNS request is relocated to the GSLB device, and then the GSLB device needs to select an optimal border server to provide services for the UE according to various factors, such as the geographical location of the UE, the load of the boundary server. Status, etc. However, content providers and service providers need to sign up with CDN providers, and content can be transferred to CDN border servers in advance or in real time.

However, for CDNs used in public transportation, when users have high bandwidth for video, etc. When the source demand is large, the above CDN mechanism reduces the transmission efficiency of high bandwidth resources.

Summary of the invention

A first aspect of the present invention provides a media resource transmission device, including:

a receiving module, configured to receive a content request message of the first user equipment, where the content request message of the first user equipment includes information about content required by the first user equipment;

a sending module, configured to send content required by the first user equipment to the first user equipment according to information about content required by the first user equipment;

The content required by the first user equipment is cached in the first media resource transmission device or cached in the second media resource transmission device;

The first media resource transmission device and the second media resource transmission device are disposed in a public transportation vehicle where the first user equipment is located.

In conjunction with the first aspect, in a first possible implementation, the receiving module is further configured to receive a content resource sent by the content distribution network global server CGS before receiving the content request message of the first user equipment.

In conjunction with the first possible implementation of the first aspect, in a second possible implementation, a cache module is configured to cache the content resource.

In conjunction with the first possible implementation of the first aspect, in a third possible implementation, the sending module is further configured to send the content resource to the at least one second media resource transmission device. Cache.

In conjunction with any of the foregoing possible implementations of the first aspect, in a fourth possible implementation, the method further includes:

If the content resource is a segmented content resource, the processing module is configured to integrate the segmented content resource into a complete content resource.

With reference to any one of the foregoing feasible implementations of the first aspect, in a fifth possible implementation, the processing module is further configured to generate a content resource list according to the content resource, where the content resource list includes all The index information and location information of the content resource buffered by the media resource transmission device.

With reference to the first aspect or the first feasible implementation of the first aspect or the first feasible implementation of the second aspect, in a sixth possible implementation manner, the receiving module, The content resource list is further configured to receive the content resource list sent by the second media resource transmission device, where the content resource list includes index information and location information of content resources cached by all media resource transmission devices.

With reference to the fifth possible implementation manner of the first aspect or the sixth feasible implementation manner of the first aspect, in the seventh feasible implementation manner, the content resource list further includes all media resource transmission device caches. Priority information for the content resource.

With reference to the fifth possible implementation of the first aspect or the sixth possible implementation of the first aspect or the seventh possible implementation of the first aspect, in an eighth possible implementation manner, The processing module of the first media resource transmission device is further configured to determine, according to information about content required by the first user equipment, and the content resource list, whether content required by the first user equipment is cached in the The first media resource transmission device;

And the sending module is further configured to send, to the first content, the content required by the first user equipment that is cached in the first media resource transmission device, if the cached in the first media resource transmission device a user equipment;

If not cached in the first media resource transmission device, the processing module is further configured to determine, according to the information about the content required by the first user equipment, and the content resource list, the first user equipment Whether the content is already cached in the second media resource transmission device;

The sending module is further configured to send a content forwarding request to the second media resource transmission device, if the buffer is already in the second media resource transmission device.

With reference to the first aspect or any one of the foregoing possible implementation manners of the first aspect, in the ninth possible implementation, the processing module is further configured to create and update a log file of the first user equipment. The log file of the first user equipment includes charging information of the first user equipment;

After the service session of the first user equipment ends, the sending module is further configured to send the charging information of the first user equipment to the content distribution network global server CGS.

With reference to the first aspect, or any one of the foregoing possible implementation manners of the first aspect, in the tenth possible implementation, the receiving module is further configured to perform, according to the first user equipment, the sending module Receiving, by the information of the required content, the content request message of the second user equipment after the content of the first user equipment is sent to the first user equipment, where the content request message of the second user equipment includes the Information about the content required by the user equipment;

The processing module is further configured to determine that information about content required by the second user equipment is the same as information of content required by the first user equipment

The sending module is further configured to send the content required by the second user equipment to the second user equipment.

With reference to the tenth possible implementation of the first aspect, in an eleventh possible implementation, the processing module is further configured to create and update a log file of the second user equipment, where the second The log file of the user equipment includes charging information of the second user equipment;

After the service session of the first user equipment ends, the sending module is further configured to send the charging information of the second user equipment to the content distribution network global server CGS.

With reference to the first aspect, or any one of the foregoing possible implementation manners of the first aspect, in the twelfth possible implementation, the receiving module is further configured to receive the The breakpoint information of the content required by the first user equipment; the sending module is further configured to send breakpoint information of the content required by the first user equipment to the base station; and/or,

The receiving module is further configured to receive breakpoint information of the content required by the second user equipment that is sent by the second user equipment, where the sending module is further configured to: use the content of the second user equipment The breakpoint information is sent to the base station.

A second aspect of the present invention provides a media resource transmission device, including:

a receiver, configured to receive a content request message of the first user equipment, where the content request message of the first user equipment includes information about content required by the first user equipment;

a transmitter, configured to send content required by the first user equipment to the first user equipment according to information about content required by the first user equipment;

In conjunction with the second aspect, in a first possible implementation, the receiver is further configured to receive a content resource sent by the content distribution network global server CGS before receiving the content request message of the first user equipment.

In conjunction with the first possible implementation of the second aspect, in a second possible implementation, a buffer is configured to cache the content resource.

In conjunction with the first possible implementation of the second aspect, in a third possible implementation, the transmitter is further configured to send the content resource to the at least one second media resource transmission device. Cache.

In combination with any of the foregoing feasible implementations of the second aspect, in a fourth possible implementation manner, the method further includes:

With reference to any of the foregoing feasible implementations of the second aspect, in a fifth possible implementation, the processor is further configured to generate a content resource list according to the content resource, where the content resource list includes all The index information and location information of the content resource buffered by the media resource transmission device.

With reference to the second aspect or the first feasible implementation of the second aspect or the first feasible implementation of the second aspect, in a sixth possible implementation, the receiver is further used Receiving, by the second media resource transmission device, the content resource list, where the content resource list includes index information and location information of content resources cached by all media resource transmission devices.

With reference to the fifth possible implementation manner of the second aspect or the sixth feasible implementation manner of the second aspect, in the seventh feasible implementation manner, the content resource list further includes all media resource transmission device caches. Priority information for the content resource.

With reference to the fifth possible implementation manner of the second aspect, or the sixth feasible implementation manner of the second aspect, or the seventh feasible implementation manner of the second aspect, in an eighth feasible implementation manner, The processor of the first media resource transmission device is further configured to determine, according to information about content required by the first user equipment, and the content resource list, whether content required by the first user equipment is cached in the The first media resource transmission device;

And the transmitter is further configured to send, to the first content, the content required by the first user equipment that is cached in the first media resource transmission device, if the buffer is already in the first media resource transmission device, a user equipment;

If not cached in the first media resource transmission device, the processor is further configured to determine, according to the information about the content required by the first user equipment and the content resource list, the first user equipment Whether the content is already cached in the second media resource transmission device;

The sender is further configured to send a content forwarding request to the second media resource transmission device, if the buffer is already in the second media resource transmission device.

With reference to the second aspect, or any one of the foregoing feasible implementations of the second aspect, in a ninth possible implementation, the processor is further configured to create and update a log file of the first user equipment. The log file of the first user equipment includes charging information of the first user equipment;

After the service session of the first user equipment ends, the sender is further configured to send the charging information of the first user equipment to the content distribution network global server CGS.

With reference to the second aspect, or any one of the foregoing possible implementation manners of the second aspect, in a tenth possible implementation, the receiver is further configured to perform, according to the first user equipment, the transmitter Receiving, by the information of the required content, the content request message of the second user equipment after the content of the first user equipment is sent to the first user equipment, where the content request message of the second user equipment includes the Information about the content required by the user equipment;

The processor is further configured to determine that information about content required by the second user equipment is the same as information of content required by the first user equipment

The transmitter is further configured to send the content required by the second user equipment to the second user equipment.

With reference to the tenth possible implementation of the second aspect, in an eleventh possible implementation, the processor is further configured to create and update a log file of the second user equipment, where the second The log file of the user equipment includes charging information of the second user equipment;

After the service session of the first user equipment ends, the sender is further configured to send the charging information of the second user equipment to the content distribution network global server CGS.

With reference to the second aspect, or any one of the foregoing possible implementation manners of the second aspect, in a twelfth possible implementation, the receiver is further configured to receive the The breakpoint information of the content required by the first user equipment; the transmitter is further configured to send breakpoint information of the content required by the first user equipment to the base station; and/or,

The receiver is further configured to receive breakpoint information of the content required by the second user equipment sent by the second user equipment, where the transmitter is further configured to: use the content of the second user equipment The breakpoint information is sent to the base station.

A third aspect of the present invention provides a media resource transmission method, including:

Receiving, by the first media resource transmission device, a content request message of the first user equipment, where the content request message of the first user equipment includes information about content required by the first user equipment;

The first media resource transmission device sends the content required by the first user equipment to the first user equipment according to the information of the content required by the first user equipment;

With reference to the third aspect, in a first possible implementation, before the first media resource transmission device receives the content request message of the first user equipment, the method further includes:

The first media resource transmission device receives the content resource sent by the content distribution network global server CGS.

In conjunction with the first possible implementation manner of the third aspect, in a second possible implementation manner, the method further includes: the first media resource transmission device buffering the content resource.

In combination with the first feasible implementation of the third aspect, in a third possible implementation manner, the method further includes:

The first media resource transmission device sends the content resource to at least one of the second media resource transmission devices for caching.

In conjunction with any of the foregoing feasible implementations of the third aspect, in a fourth possible implementation, the first media resource transmission device receives the content resource sent by the content distribution network global server CGS, including:

If the content resource is a segmented content resource, the first media resource transmission device integrates the segmented content resource into a complete content resource.

In combination with any of the foregoing feasible implementations of the third aspect, in a fifth possible implementation manner, the method further includes:

The first media resource transmission device generates a content resource list according to the content resource, where the content resource list includes index information and location information of content resources cached by all media resource transmission devices.

With reference to the third aspect or the first feasible implementation manner of the third aspect or the first feasible implementation manner of the third aspect, in the sixth feasible implementation manner, the method further includes:

The first media resource transmission device receives the content resource list sent by the second media resource transmission device, where the content resource list includes index information and location information of content resources cached by all media resource transmission devices.

With reference to the fifth possible implementation manner of the third aspect or the sixth feasible implementation manner of the third aspect, in the seventh feasible implementation manner, the content resource list further includes all media resource transmission device caches. Priority information for the content resource.

With reference to the fifth possible implementation manner of the third aspect, or the sixth feasible implementation manner of the third aspect, or the seventh feasible implementation manner of the third aspect, in an eighth feasible implementation manner, The first media resource transmission device sends the content of the first user equipment to the first user equipment according to the information about the content of the first user equipment, including:

Determining, by the first media resource transmission device, that the content required by the first user equipment is cached in the first media resource transmission device according to the information of the content required by the first user equipment and the content resource list;

If the first media resource transmission device has been cached in the first media resource transmission device, the first media resource transmission device sends the content required by the first user device that is cached in the first media resource transmission device to the first a user equipment;

If the first media resource transmission device is not cached, the first media resource transmission device determines, according to the information about the content required by the first user device and the content resource list, the first user equipment Whether the content is already cached in the second media resource transmission device;

And if the buffer is already in the second media resource transmission device, the first media resource transmission device sends a content forwarding request to the second media resource transmission device.

With reference to the third aspect, or any one of the foregoing possible implementation manners of the third aspect, in the ninth possible implementation manner, the method further includes:

The first media resource transmission device creates and updates a log file of the first user equipment, where the log file of the first user equipment includes charging information of the first user equipment;

After the service session of the first user equipment ends, the first media resource transmission device sends the charging information of the first user equipment to the content distribution network global server CGS.

With reference to the third aspect or any one of the foregoing possible implementation manners of the third aspect, in the tenth possible implementation manner, the first media resource transmission device is configured according to the content required by the first user equipment Information, sending the content required by the first user equipment to the first user After the device, it also includes:

The first media resource transmission device receives a content request message of the second user device, where the content request message of the second user device includes information about content required by the second user device;

The first media resource transmission device determines that the information of the content required by the second user equipment is the same as the information of the content required by the first user equipment, and sends the content required by the second user equipment to the Two user devices.

In conjunction with the tenth possible implementation manner of the third aspect, in an eleventh possible implementation manner, the method further includes:

The first media resource transmission device creates and updates a log file of the second user equipment, where the log file of the second user equipment includes charging information of the second user equipment;

After the service session of the first user equipment ends, the first media resource transmission device sends the charging information of the second user equipment to the content distribution network global server CGS.

In combination with the third aspect or the third aspect, any one of the foregoing feasible implementation manners, in the twelfth possible implementation manner, the method further includes:

The first media resource transmission device receives breakpoint information of the content required by the first user equipment sent by the first user equipment; the first media resource transmission device uses content required by the first user equipment The breakpoint information is sent to the base station; and/or,

The first media resource transmission device receives breakpoint information of the content required by the second user equipment sent by the second user equipment; the first media resource transmission device selects content required by the second user equipment The breakpoint information is sent to the base station.

The media resource transmission device and method provided by the embodiment of the present invention, the content request message of the first user equipment is received by the first media resource transmission device, where the content request message of the first user equipment includes the content required by the first user equipment The first media resource transmission device sends the content required by the first user device to the first user device according to the information of the content required by the first user device; wherein the first user The content required by the device is cached in the first media resource transmission device or cached in the second media resource transmission device; the first media resource transmission device and the second media resource transmission device are set in the first A public transportation vehicle in which a user equipment is located. Thereby implementing a LAN expansion of a public vehicle carrying the first media resource transmission device and the second media resource transmission device, capable of supporting more users to download desired content in the local area network, and when the user is facing the video Contour bandwidth resources need When the content is large, since the content required by the user is already cached on the first media resource transmission device and the second media resource transmission device, the user directly passes the device and the device from the first media resource. The second media resource transmission device downloads and obtains the required content, thereby improving the transmission efficiency of the high bandwidth resource.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention;

2 is a schematic diagram of a logical architecture provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of an SP networking provided by an embodiment of the present invention;

4 is a schematic structural diagram of an SP user plane protocol layer according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a media resource transmission device according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of another media resource transmission device according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another media resource transmission device according to an embodiment of the present disclosure;

FIG. 8 is a schematic flowchart diagram of a method for transmitting a media resource according to an embodiment of the present disclosure;

FIG. 9 is a schematic flowchart diagram of another method for transmitting a media resource according to an embodiment of the present disclosure;

FIG. 10 is a schematic flowchart diagram of another media resource transmission method according to an embodiment of the present disclosure;

FIG. 11 is a schematic flowchart of another media resource transmission method according to an embodiment of the present disclosure;

FIG. 12 is a schematic diagram of a service request interaction process according to an embodiment of the present invention;

FIG. 13 is a schematic diagram of a service request interaction process according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. Based on the embodiments of the present invention, those skilled in the art are not making creative labors. All other embodiments obtained below are within the scope of the invention.

In the prior art, the CDN deploys a border server in multiple locations and caches resources on the border server, so that resources between the network and the access network device (base station, eNB, etc.) can be saved; but the existing CDN The architecture does not save the wireless air interface resources between the access network device and the UE. Therefore, for the CDN applied to public transportation, when the UE has a large demand for high bandwidth resources such as video, the access network device and the UE The pressure of the wireless air interface resource is too large, thereby reducing the transmission efficiency of the high bandwidth resource, and thus cannot meet the video transmission requirement of the user. Moreover, since the caches of the border servers in the prior art are independent of each other, there is also no effective mechanism to cooperate with resources of the entire network to provide corresponding service services for one UE.

FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention. Referring to FIG. 1, the network architecture includes: a CDN Global Server (CGS), and a policy and charging rule function (policy and charging rule function). Abbreviation: PCRF), Packet Data Network Gateway (P-GW), CDN Edge Server (CES), Host Node (Donor ENB, DeNB for short), Smart Node (Smart) Point, referred to as: SP), terminal;

The CGS is responsible for the statistics of the hot resource information, and then the resource is sent to the vehicle SP according to the QOS policy issued by the PCRF. The steps are as follows:

Step 0: The CGS sends the statistics hot resource list to the CDN border server according to the core network load status and the CDN border server status.

Step 1: The CDN border server sends the resource to the SP in idle time according to the bandwidth status of the radio access network and the storage state of the SP;

Step 2: The UE obtains a list of available resources of the in-vehicle network through the APP, and requests resources pre-stored in the SP. If there is no requested resource in the SP accessed by the UE, the SP may forward the resources in other SPs in the same car to the UE.

Optionally, the end user accesses the in-vehicle resources in the SP through a dedicated mobile APP.

Further, FIG. 2 is a schematic diagram of a logical architecture provided by an embodiment of the present invention. Referring to FIG. 2, the functions of each part in the logical architecture are as follows:

The functions of CES mainly include the following three parts:

1. Collect the log files collected by the Center Control Unit (CCU) of the main SP periodically (including the information related to each user's billing, the storage status of each SP, each queue) The resources owned by the car, etc.) and the status information of each edge network collected by the CES. Organize these statistics and forward them to CGS for saving.

2. The CES receives and stores the hot resources issued by the CGS.

3. The CES delivers the hot resource to the SP when the network is idle according to the storage state and network status information of the SP.

The functions of CGS mainly include the following four parts:

1. CGS is responsible for certification, authorization, APP download service, and business push service;

2. Count popular videos, generate resource lists, and send them to CES under the list of popular resources and resources.

3. Process the statistical information sent by CES. The CGS extracts the information related to the charging, and charges the user according to the charging rule delivered by the PCRF. The CGS sends the statistics to the CES according to the status information of the core network.

4. Have the right to configure the SP, make changes to the media content, such as deleting, pushing/updating the media content.

FIG. 3 is a schematic diagram of an SP networking according to an embodiment of the present invention. Referring to FIG. 3, as shown in the foregoing figure, a centralized control and a distributed storage networking manner are adopted between multiple SPs in the vehicle. The vehicle SP is divided into two main auxiliary SPs. The main SP includes a CCU functional unit, which can centrally control other SPs in the vehicle. Resources can be stored in the server functional units of each SP, and the SPs are wired.

Referring to FIG. 3, the SP receives the resources sent from the CES to the SP and stores them in a local server. The CCU of the primary SP is connected to the server of the secondary SP to manage each server and is responsible for distributed storage and integration of resources. When the local server does not have extra space to store the newly received resources, the CCU controls the local server to store the newly received resources into the appropriate SP according to the available storage space of each in-vehicle SP. Due to the mobility of the subway, there may be a case where a complete video resource is distributed to different SPs. In this case, the CCU will also be responsible for integrating the resources into complete resources and storing them in the appropriate SP; the CCU should be responsible for counting all the resources in the server, generating a list of resources, and then distributing the list of resources to each server. . When the UE requests the resource from the server, the server can quickly locate the server where the resource is located, and then the server sends the resource; the Statistic (statistic, hereinafter referred to as stat) unit is responsible for collecting the traffic usage and time information of each user, and is used for charging; The server converts the in-vehicle resource requested by the UE into the appropriate format through the L-GW, and the resource received by the SP receiving end RX is converted into an appropriate one by the L-GW. The format is stored in the server; the wired connection at the transmitting end can ensure that resources under any server can be transmitted to the corresponding UE to realize sharing of the vehicle resources. The wired connection at the transmitting end is also the key to realizing resource distributed storage and resource integration.

The functions included in the CCU are as follows:

1. Store the storage resource usage of each SP;

2. Store a list of resources that all SPs of the vehicle can provide, and indicate the location where each resource is stored (ie, the URL address of each resource).

3. When the CES issues new resources, the CCU updates the resources according to the priority according to the space required for the new resources (the priority is inversely proportional to the time and proportional to the click rate).

4. Distributed resource storage and resource integration: The CCU is responsible for controlling the distributed storage of hot resources in each vehicle SP and integrating one resource received by the segment into a complete resource and storing it in an SP.

4 is a schematic structural diagram of an SP user plane protocol layer according to an embodiment of the present invention. Referring to FIG. 4, a UE may have an application layer (APP), a Transmission Control Protocol/User Datagram Protocol (TCP). /UDP) layer, Internet Protocol (IP) layer, Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC) layer , Media Access Control (MAC) layer, physical layer (PHY); SP can have PDCP layer, RLC layer, MAC layer, PHY layer, APP layer, TCP/UDP layer, IP layer, GPRS tunneling protocol GPRS Tunneling Protocol-User plane (GTP-U) layer, UDP layer, IP layer, PDCP layer, RLC layer, MAC layer, PHY layer; DeNB may have GTP-U layer, UDP layer, IP layer, The PDCP layer, the RLC layer, the MAC layer, the PHY layer, the L2 layer, and the L1 layer; the P-GW/S-GW layer may have an IP layer, a GTP-U layer, a UDP layer, an IP layer, an L2 layer, and an L1 layer. The resources that the core network sends to the SP are first restored to the server of the APP layer in the SP server. When the UE requests the resource, the resource is further encapsulated from the APP layer to the IP layer and sent to the UE through the sending end of the SP.

The foregoing SP is specifically described by using a specific embodiment. It should be noted that, in the following, the first media resource transmission device and the second media resource transmission device, that is, the SP, and the first media resource transmission device and the second media resource The transmission device has the functions of the primary SP and the secondary SP described above.

FIG. 5 is a schematic structural diagram of a media resource transmission device according to an embodiment of the present invention. The media resource transmission device is an SP described above, and the SP is set in a high-speed mobile public transportation such as a subway or a high-speed railway. 5, the device includes: a receiving module 100, a sending module 101;

The receiving module 100 is configured to receive a content request message of the first user equipment, where the content request message of the first user equipment includes information about content required by the first user equipment;

The sending module 101 is configured to send the content required by the first user equipment to the first user equipment according to the information about the content required by the first user equipment;

The media resource transmission device provided by the embodiment of the present invention receives the content request message of the first user equipment by using the receiving module, where the content request message of the first user equipment includes information about content required by the first user equipment; The module sends the content required by the first user equipment to the first user equipment according to the information of the content required by the first user equipment, where the content required by the first user equipment is cached in the first The media resource transmission device is cached in the second media resource transmission device; the first media resource transmission device and the second media resource transmission device are disposed in a public transportation vehicle where the first user device is located. Thereby implementing a LAN expansion of a public vehicle carrying the first media resource transmission device and the second media resource transmission device, capable of supporting more users to download desired content in the local area network, and when the user is facing the video When the content of the high bandwidth resource is large, the content that is required by the user is already cached on the first media resource transmission device and the second media resource transmission device, so that the user directly passes the first media resource. The transmission device and the second media resource transmission device download and obtain the required content, thereby improving the transmission efficiency of the high bandwidth resource.

It should be noted that the solutions provided by the various embodiments of the present invention can be used not only in the subway scene but also in other vehicles, such as high-speed rail, ships, airplanes, and the like.

Preferably, the receiving module 100 is further configured to receive the content resource sent by the content distribution network global server CGS before receiving the content request message of the first user equipment.

Further, when the first media resource transmission device is a primary SP or a secondary SP, it has different functions, and different functions are introduced below.

On the basis of FIG. 5, FIG. 6 is a schematic structural diagram of another media resource transmission device according to an embodiment of the present invention. Referring to FIG. 6, the device further includes: a cache module 102 and a processing module 103.

The cache module 102 is configured to cache the content resource.

Specifically, when the media resource transmission device shown in FIG. 5 is a secondary SP, the cache module 102 caches the content resource, or the sending module 101 is further configured to send the content resource to at least one of the first The second media resource transmission device performs caching.

Further, when the media resource transmission device shown in FIG. 5 is a primary SP, the media resource transmission device has a function of controlling and allocating content resource storage:

If the content resource is a segmented content resource, the processing module 103 is configured to integrate the segmented content resource into a complete content resource.

Thereby, distributed storage of content resources is realized, so that SPs in the entire public transportation can provide resource downloading services for the same user, thereby improving resource utilization.

Further, the processing module 103 is further configured to generate a content resource list according to the content resource, where the content resource list includes index information and location information of content resources cached by all media resource transmission devices.

Correspondingly, when the media resource transmission device shown in FIG. 5 or FIG. 6 is a secondary SP, the receiving module 100 is further configured to receive the content resource list sent by the second media resource transmission device, where the content resource is The list contains index information and location information of content resources cached by all media resource transfer devices.

Optionally, the content resource list further includes priority information of content resources cached by all media resource transmission devices.

Further, the processing module 103 is further configured to determine, according to information about content required by the first user equipment, and the content resource list, whether content required by the first user equipment is cached in the first media resource. In the transmission equipment;

The sending module 101 is further configured to send the content required by the first user equipment cached in the first media resource transmission device to the First user equipment;

The processing module 103 is further configured to determine, according to information about content required by the first user equipment and the content resource list, that the first user equipment is not cached in the first media resource transmission device. Whether the content is cached in the second media resource transmission device;

The sending module 101 is further configured to send a content forwarding request to the second media resource transmission device, if the buffer is already in the second media resource transmission device.

Specifically, after the content forwarding request is sent to the second media resource transmission device, the content required by the first user equipment is sent by the second media resource transmission device to the receiving module 100.

Optionally, the media resource transmission device shown in FIG. 5 or FIG. 6 further has a charging function:

The processing module 103 is further configured to create and update a log file of the first user equipment, where the log file of the first user equipment includes charging information of the first user equipment;

After the service session of the first user equipment ends, the sending module 101 is further configured to send the charging information of the first user equipment to the content distribution network global server CGS.

Further, when the same content resource is requested by different user equipments, the media resource transmission device of FIG. 5 or FIG. 6 may send the cached content resources to other user equipments:

The receiving module 100 is further configured to: after the sending module 101 sends the content required by the first user equipment to the first user equipment according to the information about the content required by the first user equipment, a content request message of the second user equipment, where the content request message of the second user equipment includes information about content required by the second user equipment;

The processing module 103 is further configured to determine that information about content required by the second user equipment is the same as information of content required by the first user equipment

The sending module 101 is further configured to send the content required by the second user equipment to the second user equipment.

Further, the processing module 103 is further configured to create and update a log file of the second user equipment, where the log file of the second user equipment includes charging information of the second user equipment;

After the service session of the first user equipment ends, the sending module 101 is further configured to send the charging information of the second user equipment to the content distribution network global server CGS.

Since the UE has mobility, it is possible to move the public transportation vehicle except the first media resource transmission device before completing the required content resource downloading. At this time, in order to ensure business continuity, the FIG. 5 or FIG. 6 The illustrated media resource transmission device also has the following functions:

The receiving module 100 is further configured to receive the breakpoint information of the content required by the first user equipment that is sent by the first user equipment, and the sending module 101 is further configured to: use the first user The breakpoint information of the content required by the device is sent to the base station; and/or,

The receiving module 100 is further configured to receive breakpoint information of the content required by the second user equipment that is sent by the second user equipment, and the sending module 101 is further configured to: use the second user equipment The breakpoint information of the content is sent to the base station.

In addition, the foregoing media resource transmission device, whether it is the first media resource transmission device or the second media resource transmission device, provides another feasible implementation manner in the embodiment of the present invention: FIG. 7 is another embodiment provided by the embodiment of the present invention. Schematic diagram of a media resource transmission device, referring to FIG. 7, the device includes: a receiver 200, a transmitter 201, a processor 202, and a buffer 203;

The receiver 200 may have the corresponding function of the receiving module 100 shown in FIG. 5 or FIG. 6 above; the transmitter 201 may have the corresponding function of the sending module 101 shown in FIG. 5 or FIG. 6 above; the processor 202 may have the above The corresponding function of the processing module 103 shown in FIG. 6; the buffer 203 may have the corresponding function of the cache module 102 shown in FIG. 6 above.

FIG. 8 is a schematic flowchart of a method for transmitting a media resource according to an embodiment of the present invention. The method is performed by a first media resource transmission device, that is, the SP described above, and the SP is set in a public high-speed mobile station such as a subway or a high-speed railway. In the vehicle, the structure shown in FIG. 3 or FIG. 5 or FIG. 6 or FIG. 7 above may be adopted. Referring to FIG. 8, the method includes the following steps:

Step 100: The first media resource transmission device receives a content request message of the first user equipment, where the content request message of the first user equipment includes information about content required by the first user equipment.

Step 101: The first media resource transmission device sends the content required by the first user equipment to the first user equipment according to the information about the content required by the first user equipment.

The media resource transmission method provided by the embodiment of the present invention receives the content request message of the first user equipment by using the first media resource transmission device, where the content request message of the first user equipment includes information about content required by the first user equipment. The first media resource transmission device sends the content required by the first user equipment to the first user equipment according to the information of the content required by the first user equipment, where the first user equipment Content is cached in the first medium The resource transmission device is cached in the second media resource transmission device; the first media resource transmission device and the second media resource transmission device are disposed in a public transportation vehicle where the first user device is located. Thereby implementing a LAN expansion of a public vehicle carrying the first media resource transmission device and the second media resource transmission device, capable of supporting more users to download desired content in the local area network, and when the user is facing the video When the content of the high bandwidth resource is large, the content that is required by the user is already cached on the first media resource transmission device and the second media resource transmission device, so that the user directly passes the first media resource. The transmission device and the second media resource transmission device download and obtain the required content, thereby improving the transmission efficiency of the high bandwidth resource.

Preferably, on the basis of FIG. 8, FIG. 9 is a schematic flowchart of another media resource transmission method according to an embodiment of the present invention, where the first media resource transmission device and the second media resource transmission device may adopt the above figure. 3 or the structure shown in FIG. 5 or FIG. 6 or FIG. 7, referring to FIG. 9, before step 100, further comprising:

Step 102: The first media resource transmission device receives a content resource sent by the content distribution network global server CGS.

When the network is idle, the CGS sends the content resource to the first media resource transmission device, which increases the bandwidth utilization.

When the first media resource transmission device is a secondary SP, when the foregoing step 102 is completed, the first media resource transmission device caches the content resource.

When the first media resource transmission device is the primary SP, when the foregoing step 102 is completed, the method further includes:

Step 103: The first media resource transmission device sends the content resource to at least one of the second media resource transmission devices for caching.

That is, when the first media resource transmission device is a primary SP, the first media resource transmission device has a function of controlling and allocating content resource storage. Thereby achieving distributed storage of content resources, so that SPs in the entire public transport can provide resource downloads for the same user. Service to improve resource utilization. It should be noted that step 103 is not shown in the figure.

Further, if the content resource is a segmented content resource, the first media resource transmission device integrates the segmented content resource into a complete content resource.

And, when the first media resource transmission device is a primary SP, the first media resource transmission device generates a content resource list according to the content resource, where the content resource list includes content resources cached by all media resource transmission devices. Index information and location information.

Correspondingly, when the first media resource transmission device is a secondary SP, the first media resource transmission device receives the content resource list sent by the second media resource transmission device, where the content resource list includes all media. Index information and location information of content resources cached by the resource transfer device.

Specifically, for the priority information, the indicated priority may be inversely proportional to the corresponding content resource generation time, and is proportional to the content resource's click rate. Certainly, the implementation manner of the priority information is not limited in the embodiment of the present invention, as long as the hot content is preferentially presented to the user.

On the basis of FIG. 8, FIG. 10 is a schematic flowchart of another method for transmitting a media resource according to an embodiment of the present invention, where the first media resource transmission device and the second media resource transmission device may adopt the foregoing FIG. 3 or 5 or the structure shown in FIG. 6 or FIG. 7, referring to FIG. 10, a feasible implementation manner of step 101 is:

Step 101a: The first media resource transmission device determines, according to information about content required by the first user equipment, and the content resource list, whether content required by the first user equipment is cached in the first media resource transmission. In the equipment;

Step 101b: If the first media resource transmission device is cached in the first media resource transmission device, the first media resource transmission device sends the content required by the first user device that is cached in the first media resource transmission device to The first user equipment;

Step 101c: If not cached in the first media resource transmission device, the first media resource transmission device determines the first user according to the information of the content required by the first user equipment and the content resource list. Whether the content required by the device is already cached in the second media resource transmission device;

Step 101d: If the second media resource transmission device is already buffered, the first media resource transmission device sends a content forwarding request to the second media resource transmission device.

Specifically, after the content forwarding request is sent to the second media resource transmission device, the content required by the first user equipment is sent by the second media resource transmission device to the first user equipment.

It should be noted that, if the content of the first user equipment is not cached in the second media resource transmission device, the first media resource transmission device requests the CES to deliver the first user equipment. content. It should be noted that the steps shown in FIG. 10 can also be illustrated on the basis of FIG.

Optionally, the first media resource transmission device further has a charging function, and a feasible implementation manner is:

Further, when the same content resource is requested by different user equipments, the first media resource transmission device may send the cached content resources to other user equipments. On the basis of FIG. 8, FIG. 11 is a schematic flowchart of another method for transmitting a media resource according to an embodiment of the present invention, where the first media resource transmission device and the second media resource transmission device may adopt the foregoing FIG. 3 or 5 or the structure shown in FIG. 6 or FIG. 7, referring to FIG. 11, after step 101, further comprising:

Step 104: The first media resource transmission device receives a content request message of the second user equipment, where the content request message of the second user equipment includes information about content required by the second user equipment.

Step 105: The first media resource transmission device determines that the information of the content required by the second user equipment is the same as the information of the content required by the first user equipment, and sends the content required by the second user equipment to The second user equipment.

Correspondingly, the first media resource transmission device creates and updates a log file of the second user equipment, where the log file of the second user equipment includes charging information of the second user equipment; After the service session of the user equipment ends, the first media resource transmission device The charging information of the second user equipment is sent to the content distribution network global server CGS.

It should be noted that FIG. 11 can also be implemented in combination with the steps shown in FIG. 9 or FIG.

Since the UE has mobility, the public media in addition to the first media resource transmission device may be moved before the completion of the required content resource downloading. At this time, in order to ensure service continuity, the first media resource transmission device It also has the following features:

The following describes the interaction process between the network architecture and the SP described above through a specific embodiment.

FIG. 12 is a schematic diagram of a service request interaction process according to an embodiment of the present invention. Referring to FIG. 12, this embodiment uses two UEs (UE1 and UE1), two SPs (SP2 and SP3), one CES, and one CGS as an example. . The interaction process includes the following steps:

Step 1. UE1 initiates a content request to SP2.

Step 2, SP2 determines whether the requested content is in the SP;

Specifically, if yes, go to step 3; otherwise, go to step 4;

Step 3: UE1 performs content download from SP2.

Step 4: SP2 determines whether the requested content is in another SP;

Specifically, if it is in another SP, the content request is forwarded to the SP3, otherwise the content request is forwarded to the CES;

Step 5, SP3 sends the request content to SP2, and SP2 forwards to UE1;

Step 6. The SP2 downloads the resource from the CES to obtain the requested content.

Specifically, CES determines whether it has requested resources. If so, send the request to SP2.

It should be noted that steps 5 and 6 are selectively performed according to the judgment of step 4.

Step 7. SP2 caches the resources downloaded from the CES.

Step 8, SP2 forwards the resource to UE1;

Step 9. SP2 performs the creation and update of the UE1 log file, which includes the charging related information. interest.

Step 10: The UE1 service end is ended.

Step 11. UE2 requests the same resource as UE1.

Step 12: SP2 responds to the request, and sends a resource to UE2.

Step 13 and SP2 perform UE2 log file creation and update, which includes charging related information.

Step 14. The UE2 service end is ended.

Steps 15 and SP2 periodically report the log files of UE1 and UE2.

It should be noted that SP2 can also upload the UE1 and UE2 log files separately.

Specifically, UE1 first requests the resource to access SP2. If there is a requested resource in SP2, SP2 directly sends the resource to UE1. If the resource is not in SP2, SP2 retrieves whether the requested resource is in the in-vehicle resource list stored in the internal. In other in-vehicle SPs, if in other in-vehicle SPs (assumed to be SP3), the video resource request is forwarded to SP3, and SP3 forwards the resource to the UE1 through the wired interface between SP2 and the SP2. If there is no requested resource in the in-vehicle SP, the access SP requests the resource from the CES, and if the CES contains the requested resource, it is forwarded to the UE1 through the SP2. At the same time, SP2 caches the resources downloaded from CES and informs the main SP to update the resource list of the entire vehicle. This happens when the hot resources sent to the CES under the core network are not fully delivered to the car SP. During the process of delivering resources, SP2 will create and update the UE1 log file. The log file contains related information such as accounting (such as the traffic information used by UE1 to enjoy this service). After the end of the UE1 service session, if other UEs (assumed to be UE2) request the same resource, the resource can be directly sent to the UE2 from the in-vehicle SP, and the UE2 log file is created and updated. The user's log file is periodically reported to the CGS when the network is idle. The CGS then charges the user according to the charging policy delivered by the PCRF.

The popularity of the pre-storage resources and the guiding role of the APP list display enable a resource stored by the SP to be downloaded multiple times. The more people download, the lower the cost, but the billing is charged uniformly for each user, so the more users, the greater the revenue.

FIG. 13 is a schematic diagram of a service request interaction process according to an embodiment of the present invention. Referring to FIG. 13, this embodiment takes a UE, an SP, a DeNB, and a CES as an example. The interaction process includes the following steps:

Step 1. The UE and SP content requests are completed, and the content is downloaded.

Step 2: The user goes to the station and gets off the vehicle, and the UE switches, and accesses the DeNB of the station;

Step 3: The UE reports the UE downloading a video breakpoint.

Step 4: The DeNB forwards the UE to download a video breakpoint.

Step 5: CES resumes the breakpoint resource;

Step 6. The DeNB forwards the resuming breakpoint resource to the UE.

Step 7. The UE content download is completed, and the callback is ended.

If the user transfers to another subway before the end of the callback, the UE will handoff the breakpoint information to the next onboard SP of the UE when the UE switches. Implement breakpoints.

Specifically, when the user transfers by subway to the station, the UE switches and accesses the DeNB near the subway station. After the handover is completed, the UE reports the breakpoint of the downloaded video to the DeNB, and the DeNB forwards the packet to the CES. Because CES contains all the popular resources, the video can be resumed based on the reported video endpoint. Finally, the content download is complete and the session ends. If the user transfers to another subway before the end of the session, the UE also passes the breakpoint information to the next onboard SP of the UE to implement the breakpoint transmission.

Therefore, the base station boundary buffer, CES, can guarantee the continuity of the service during the transfer. Each CES contains all the contents of the resource list. When the user transfers, the SP downloads the download breakpoint to CES, and CES implements the video resume.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to the program instructions. The foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

A media resource transmission device, comprising:

a receiving module, configured to receive a content request message of the first user equipment, where the content request message of the first user equipment includes information about content required by the first user equipment;

a sending module, configured to send content required by the first user equipment to the first user equipment according to information about content required by the first user equipment;

The content required by the first user equipment is cached in the first media resource transmission device or cached in the second media resource transmission device;

The first media resource transmission device and the second media resource transmission device are disposed in a public transportation vehicle where the first user equipment is located.
The device according to claim 1, wherein the receiving module is further configured to receive the content resource sent by the content distribution network global server CGS before receiving the content request message of the first user equipment.
The device according to claim 2, wherein a cache module is configured to cache the content resource.
The device according to claim 2, wherein the sending module is further configured to send the content resource to at least one of the second media resource transmission devices for caching.
The device according to any one of claims 2 to 4, further comprising:

If the content resource is a segmented content resource, the processing module is configured to integrate the segmented content resource into a complete content resource.
The device according to any one of claims 2 to 5, wherein the processing module is further configured to generate a content resource list according to the content resource, where the content resource list includes content cached by all media resource transmission devices Index information and location information for resources.
The device according to any one of claims 1 to 3, wherein the receiving module is further configured to receive the content resource list sent by the second media resource transmission device, where the content resource list includes all The index information and location information of the content resource buffered by the media resource transmission device.
The device according to claim 6 or 7, wherein the content resource list further comprises priority information of content resources cached by all media resource transmission devices.
Apparatus according to any one of claims 6-8, wherein said first medium The processing module of the physical resource transmission device is further configured to determine, according to information about content required by the first user equipment, and the content resource list, whether content required by the first user equipment is cached in the first media resource In the transmission equipment;

And the sending module is further configured to send, to the first content, the content required by the first user equipment that is cached in the first media resource transmission device, if the cached in the first media resource transmission device a user equipment;

If not cached in the first media resource transmission device, the processing module is further configured to determine, according to the information about the content required by the first user equipment, and the content resource list, the first user equipment Whether the content is already cached in the second media resource transmission device;

The sending module is further configured to send a content forwarding request to the second media resource transmission device, if the buffer is already in the second media resource transmission device.
The device according to any one of claims 1 to 9, wherein the processing module is further configured to create and update a log file of the first user equipment, where the log file of the first user equipment includes Charging information of the first user equipment;

After the service session of the first user equipment ends, the sending module is further configured to send the charging information of the first user equipment to the content distribution network global server CGS.
The device according to any one of claims 1 to 10, wherein the receiving module is further configured to: in the sending module, the first user according to information about content required by the first user equipment After the content of the device is sent to the first user device, receiving a content request message of the second user device, where the content request message of the second user device includes information about content required by the second user device;

The processing module is further configured to determine that information about content required by the second user equipment is the same as information of content required by the first user equipment

The sending module is further configured to send the content required by the second user equipment to the second user equipment.
The device according to claim 11, wherein the processing module is further configured to create and update a log file of the second user equipment, where the log file of the second user equipment includes the second user equipment Billing information;

After the service session of the first user equipment ends, the sending module is further configured to send the charging information of the second user equipment to the content distribution network global server CGS.
The device according to any one of claims 1 to 12, wherein the receiving module is further configured to receive breakpoint information of content required by the first user equipment sent by the first user equipment; The sending module is further configured to send breakpoint information of the content required by the first user equipment to the base station; and/or,

The receiving module is further configured to receive breakpoint information of the content required by the second user equipment that is sent by the second user equipment, where the sending module is further configured to: use the content of the second user equipment The breakpoint information is sent to the base station.
A media resource transmission device, comprising:

a receiver, configured to receive a content request message of the first user equipment, where the content request message of the first user equipment includes information about content required by the first user equipment;

a transmitter, configured to send content required by the first user equipment to the first user equipment according to information about content required by the first user equipment;

The content required by the first user equipment is cached in the first media resource transmission device or cached in the second media resource transmission device;

The first media resource transmission device and the second media resource transmission device are disposed in a public transportation vehicle where the first user equipment is located.
The device according to claim 14, wherein the receiver is further configured to receive the content resource sent by the content distribution network global server CGS before receiving the content request message of the first user equipment.
The device according to claim 15, wherein a buffer is used to buffer the content resource.
The device according to claim 15, wherein the sender is further configured to send the content resource to at least one of the second media resource transmission devices for caching.
The device according to any one of claims 15-17, further comprising:

If the content resource is a segmented content resource, the processing module is configured to integrate the segmented content resource into a complete content resource.
The device according to any one of claims 15 to 18, wherein the processor is further configured to generate a content resource list according to the content resource, where the content resource list includes content cached by all media resource transmission devices Index information and location information for resources.
Apparatus according to any of claims 14-16, wherein said The receiver is further configured to receive the content resource list sent by the second media resource transmission device, where the content resource list includes index information and location information of content resources cached by all media resource transmission devices.
The device according to claim 19 or 20, wherein the content resource list further comprises priority information of content resources cached by all media resource transmission devices.
The device according to any one of claims 19 to 21, wherein the processor of the first media resource transmission device is further configured to: according to the information of the content required by the first user equipment and the content Determining, by the resource list, whether content required by the first user equipment is cached in the first media resource transmission device;

And the transmitter is further configured to send, to the first content, the content required by the first user equipment that is cached in the first media resource transmission device, if the buffer is already in the first media resource transmission device, a user equipment;

If not cached in the first media resource transmission device, the processor is further configured to determine, according to the information about the content required by the first user equipment and the content resource list, the first user equipment Whether the content is already cached in the second media resource transmission device;

The sender is further configured to send a content forwarding request to the second media resource transmission device, if the buffer is already in the second media resource transmission device.
The device according to any one of claims 14 to 22, wherein the processor is further configured to create and update a log file of the first user equipment, where the log file of the first user equipment includes Charging information of the first user equipment;

After the service session of the first user equipment ends, the sender is further configured to send the charging information of the first user equipment to the content distribution network global server CGS.
The device according to any one of claims 14 to 23, wherein the receiver is further configured to: at the sender, the first user according to information about content required by the first user equipment After the content of the device is sent to the first user device, receiving a content request message of the second user device, where the content request message of the second user device includes information about content required by the second user device;

The processor is further configured to determine that information about content required by the second user equipment is the same as information of content required by the first user equipment

The transmitter is further configured to send the content required by the second user equipment to the second user Household equipment.
The device according to claim 24, wherein the processor is further configured to create and update a log file of the second user equipment, where a log file of the second user equipment includes the second user equipment Billing information;

After the service session of the first user equipment ends, the sender is further configured to send the charging information of the second user equipment to the content distribution network global server CGS.
The device according to any one of claims 14-25, wherein the receiver is further configured to receive breakpoint information of content required by the first user equipment sent by the first user equipment; The transmitter is further configured to send breakpoint information of the content required by the first user equipment to the base station; and/or,

The receiver is further configured to receive breakpoint information of the content required by the second user equipment sent by the second user equipment, where the transmitter is further configured to: use the content of the second user equipment The breakpoint information is sent to the base station.
A media resource transmission method, comprising:

Receiving, by the first media resource transmission device, a content request message of the first user equipment, where the content request message of the first user equipment includes information about content required by the first user equipment;

The first media resource transmission device sends the content required by the first user equipment to the first user equipment according to the information of the content required by the first user equipment;

The content required by the first user equipment is cached in the first media resource transmission device or cached in the second media resource transmission device;

The first media resource transmission device and the second media resource transmission device are disposed in a public transportation vehicle where the first user equipment is located.
The method according to claim 27, wherein before the first media resource transmission device receives the content request message of the first user equipment, the method further includes:

The first media resource transmission device receives the content resource sent by the content distribution network global server CGS.
The method of claim 28, further comprising:

The first media resource transmission device caches the content resource.
The method of claim 28, further comprising:

Transmitting, by the first media resource transmission device, the content resource to at least one of the first The second media resource transmission device performs caching.
The method according to any one of claims 28-30, wherein the first media resource transmission device receives the content resource sent by the content distribution network global server CGS, including:

If the content resource is a segmented content resource, the first media resource transmission device integrates the segmented content resource into a complete content resource.
The method of any of claims 28-31, further comprising:

The first media resource transmission device generates a content resource list according to the content resource, where the content resource list includes index information and location information of content resources cached by all media resource transmission devices.
The method of any of claims 27-29, further comprising:

The first media resource transmission device receives the content resource list sent by the second media resource transmission device, where the content resource list includes index information and location information of content resources cached by all media resource transmission devices.
The method according to claim 32 or 33, wherein the content resource list further comprises priority information of content resources cached by all media resource transmission devices.
The method according to any one of claims 32-34, wherein the first media resource transmission device sends the content required by the first user equipment according to the information of the content required by the first user equipment. Giving the first user equipment includes:

Determining, by the first media resource transmission device, that the content required by the first user equipment is cached in the first media resource transmission device according to the information of the content required by the first user equipment and the content resource list;

If the first media resource transmission device has been cached in the first media resource transmission device, the first media resource transmission device sends the content required by the first user device that is cached in the first media resource transmission device to the first a user equipment;

If the first media resource transmission device is not cached, the first media resource transmission device determines, according to the information about the content required by the first user device and the content resource list, the first user equipment Whether the content is already cached in the second media resource transmission device;

And if the buffer is already in the second media resource transmission device, the first media resource transmission device sends a content forwarding request to the second media resource transmission device.
The method of any of claims 27-35, further comprising:

The first media resource transmission device creates and updates a log file of the first user equipment, where the log file of the first user equipment includes charging information of the first user equipment;

After the service session of the first user equipment ends, the first media resource transmission device sends the charging information of the first user equipment to the content distribution network global server CGS.
The method according to any one of claims 27 to 36, wherein the first media resource transmission device selects content required by the first user equipment according to information of content required by the first user equipment After being sent to the first user equipment, the method further includes:

The first media resource transmission device receives a content request message of the second user device, where the content request message of the second user device includes information about content required by the second user device;

The first media resource transmission device determines that the information of the content required by the second user equipment is the same as the information of the content required by the first user equipment, and sends the content required by the second user equipment to the Two user devices.
The method of claim 37, further comprising:

The first media resource transmission device creates and updates a log file of the second user equipment, where the log file of the second user equipment includes charging information of the second user equipment;

After the service session of the first user equipment ends, the first media resource transmission device sends the charging information of the second user equipment to the content distribution network global server CGS.
The method of any of claims 27-38, further comprising:

The first media resource transmission device receives breakpoint information of the content required by the first user equipment sent by the first user equipment; the first media resource transmission device uses content required by the first user equipment The breakpoint information is sent to the base station; and/or,

The first media resource transmission device receives breakpoint information of the content required by the second user equipment sent by the second user equipment; the first media resource transmission device selects content required by the second user equipment The breakpoint information is sent to the base station.