CN105099726B - Technology for control point to multipoint data transmission - Google Patents
Technology for control point to multipoint data transmission Download PDFInfo
- Publication number
- CN105099726B CN105099726B CN201510440550.XA CN201510440550A CN105099726B CN 105099726 B CN105099726 B CN 105099726B CN 201510440550 A CN201510440550 A CN 201510440550A CN 105099726 B CN105099726 B CN 105099726B
- Authority
- CN
- China
- Prior art keywords
- content
- location information
- user equipment
- broadcast
- transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/52—Network services specially adapted for the location of the user terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The entitled technology for control point to multipoint data transmission of the present invention.Present applicant proposes enable network by PTM for controlling data（150）To the point-to-multipoint of user group（PTM）The technology of transmission.In the first PTM transmission, by place information inquiry message distribution to group coverage（154）In.Once receiving the query messages, user equipment project is just responded using the location information response message of the location information of the position comprising instruction relative user equipment.Location information response message based on reception, determines content transmission area（156,157,158）.Then, the 2nd PTM for starting to the content transmission area transmits to carry out content distribution.In addition, the content can distribute via unicast retrieval.
Description
It is on June 2nd, 2006 that the application, which is application No. is the 200680054773.1, applying date, entitled " for controlling
Make the technology of point-to-multipoint data transmission " application for a patent for invention divisional application.
Technical field
Present invention relates in general to the multicast/broadcast transmission fields of content-data.More particularly, it relates to for controlling
Content processed is enabled by broadcasting（broadcast-enabled）Technology of the network to the point-to-multipoint transmission of user group.
Background technology
Telephony, information receiving and program request（on-demand）Streaming Service is point-to-point（PTP）Or unicast communication clothes
The example of business.On the other hand, broadcast and multicast service are then based on point-to-multipoint（PTM）Communication.It is communicated using PTM, content（Such as
Voice, text, figure or multimedia content）Typically transmitted from single source to multiple destinations.PTM service may be, for example, streaming
Service or file transmission（delivery）Service.
Content is sent to the user for having already registered with specific multicast group by multicast PTM service.In general, multicast group includes to spy
Determine the interested multiple users of content, the news in specific content field such as sports, economy, politics.
Broadcast enables network（Such as mobile network）Broadcast PTM service content-data is broadcast to scheduled geographic region
Domain.User need not register or be added some group before receiving the content.
3GPP（3rd generation partner program）It defines and is used for GSM（Global system for mobile communications）And UMTS（General Mobile
Telecommunication system）The broadcast of network and multicast service, i.e. multimedia broadcasting and multicast service（MBMS）Feature.This feature is for example recorded
In 3GPP TS（Technical specification）23.246 and in TS 26.346.A variety of broadcast/multi broadcast the relevant technologies are added to often by MBMS
In the GSM or UMTS network of rule.In order to realize these technologies, it is specified that the broadcast/multi broadcast transmission of control service functional entity,
It is known as broadcast/multicast service center（BM-SC）.
In MBMS, BM-SC is responsible for providing and transmitting broadcast/multicast service.BM-SC is used as the entrance of content delivery service
Point is established and controls MBMS delivery vehicles, and additionally can also be used to start MBMS transmission.For example, BM-SC can be provided
To user equipment（UE）The release of service of the upcoming multicast transmission of signals, the user equipment（UE）It is relevant group
Member.These notices include such as multicast service identifier, Internet Protocol（IP）Multicast address, transmission time and media
All necessary informations of description etc, user equipment need these information that multicast conversation is added.
Each broadcast/multicast service is related to coverage --- geographic area or area, it can be in the coverage
Broadcast or transmit the content.The coverage may include MNO（Mobile Network Operator）Entire PLMN（Public land moves
Dynamic network）Or even including several PLMN, condition is reached an agreement with regard to service level agreement.On the other hand, coverage can
To be configured to the small single wireless area to network.In general, coverage includes the reasonable fraction of PLMN.
The downstream of PTM data sources, each node in network has a series of other downstream nodes, to determine that it is answered
When which node is MBMS contents are forwarded to.In this way, it is established that the content distribution tree of hierarchical organization, wherein base station transceiver/
Each of Node-B stations are single radio cells, to form the leaf of the distribution tree.
Multicast service requirement network understands the position of the group membership registered to service group.Even if MBMS transmission carrier is idle,
I.e. no content transmission is carrying out, and also it is necessary to track user（Inside group coverage, i.e., in the service area of the specific group
Inside domain）Movement.Thus, for example needing complicated group management work(in the radio net and core network of mobile network
Can, so as to effectively establish transmission tree from the angle of Internet resources.
Broadcast service does not include any group of management function, thus needs the resource of much less.For example, MBMS broadcast modes are only
Simple PTM transmission is provided, i.e., the described network is between MBMS transmission or period does not track the movement of user.Content is broadcasted
Into broadcast service zone, but regardless of may to the position of the interested user of the content how.This means that broadcasting service area
Domain must be configured as large as possible, and at least for non-localized service, it preferably includes entire broadcast is enabled
Network, to ensure that the content can be that interested user receives.This also results in the waste of resource, because there may be it
In only considerably less (or even without) cell or the geographic area that the interested user of content is broadcasted to reception.
Therefore, it is necessary to provide improved PTM transmission technologys.
Invention content
The application provides a kind of method enabling the content distribution in network environment for controlling broadcast, the method includes
Step：Start location information query messages to the first broadcast transmission in group coverage, described group of coverage is for interior
Hold distribution service and pre-defines；Location information response message is received, each location information response message includes to indicate
Have received the location information of the position of the user equipment of the place information inquiry message；Location information response based on reception
Message determines content transmission area；And-prepare to examine with unicast via to the second broadcast transmission in the content transmission area
At least one of rope carries out content distribution.
The application also provides a kind of method for controlling user equipment for the content reception in the enabled network of broadcast,
The method includes the steps：Via the first broadcast transmission location information query messages are received from the network；In response to institute
It states location information query messages and sends the location information response message comprising location information and transmitted for the second broadcast, it is described
Location information indicates the position of the user equipment；And-prepare via at least one in the second broadcast transmission and unicast retrieval
A carry out content reception.
The application also provides a kind of network node, realize broadcast enable the group service control component in network environment so as to
Control content is distributed, wherein the network node includes：First interface is suitable for starting location information query messages and is taken to group
The first broadcast transmission being engaged in region, described group of coverage is pre-defined for content distribution service；Second interface,
Suitable for receiving location information response message, each location information response message includes that instruction has received that the location information is looked into
Ask the location information of the position of the user equipment of message；Processing unit is suitable for the location information response message based on reception
Determine content transmission area；Third interface is suitable for starting to the second broadcast transmission in the content transmission area.
The application provides a kind of network node again, realize broadcast enable the group service control component in network environment so as to
Control content is distributed, wherein the network node includes：First interface is suitable for starting location information query messages and is taken to group
The first broadcast transmission being engaged in region, described group of coverage is pre-defined for content distribution service；Second interface,
Suitable for receiving location information response message, each location information response message includes that instruction has received that the location information is looked into
Ask the location information of the position of the user equipment of message；Processing unit is suitable for the location information response message based on reception
Determine content transmission area；- the four interface is suitable for controlling the offer of the content for unicast retrieval.
The application provides a kind of user equipment again, for broadcasting the content reception in enabled network, wherein the user sets
It is standby to include：First interface is suitable for receiving location information query messages from the network via the first broadcast transmission；- the second
Interface, be adapted for the place information inquiry message and send the location information response message comprising location information with
In the second broadcast transmission, the location information indicates the position of the user equipment;And-third interface, it is suitable for via the
At least one of two broadcast transmission and unicast retrieval reception content.
According to the first aspect of the invention, it is proposed that enable the side of the content distribution in network environment for controlling PTM
Method.The method comprising the steps of：Start first PTM transmission of the location information query messages to group coverage, wherein can be group
The point-to-multipoint transmission of data pre-defines described group of coverage；Location information response message is received, each location information is rung
It includes the user equipment that instruction has received that the place information inquiry message to answer message（UE）Position location information；It is based on
The location information response message of reception determines content transmission area；And prepare via the 2nd PTM to the content transmission area
Transmission and/or unicast retrieval（retrieval）Carry out content distribution.
Preparation transmits progress content distribution via the 2nd PTM：The time that transmission session starts is set；To will fill
When the transmitter of the data source for the transmission provides data related with the transmission, such as the addresses PTM（Such as it is appropriate wide
Broadcast address）With required bearer resource；And provide content-data to transmitter.Prepare to carry out content distribution via unicast retrieval
May include：To serve as the point of the data source for unicast retrieval（It may for such as network of broadcast files reparation service
Location）The time of activation unicast retrieval is set（The time that will be accordingly asked from its start to process）；And it is provided to data source
The content, such as the position in memory space is provided, the content is stored in the memory space.In the case of mbms,
It has respectively provided to use during the 4.4.3.1 of 3GPP TS 23.246 is saved, 4.4.3.2 is saved and the 9.3.2 of TS 26.346 sections and has carried out example
Such as prepare the action of broadcast transmission and unicast retrieval.
It may be to be enabled in broadcast and/or multicast transmission and/or be enabled in other PTM transmission that PTM, which enables network,
Technology（Such as the following PTM transmission technologys to be developed）Network.First PTM is transmitted and/or the 2nd PTM transmission may, for example, be
Broadcast transmission.
Group coverage can be geographic area.The geographic area can have any structure, such as may include several
Subregion, these subregions can be adjacent to each other or can be away from each other.Content transmission area may include a group coverage
One or more subregions.
Group coverage may include the set of cells of the network.For example, group coverage may include a PLMN
（Or several PLMN）All cells, such as service related with specific geographic position may include only a single
Or a few cell.Content transmission area may include the subset of the set of cells from group coverage.Content transmission
The cell in region can be dispersed on entire group coverage.Group coverage and/or content transmission area may include cell
Only only a part.Power control techniques and antenna beam control for example allow the size of the fineness ratio in these regions only cell
It also wants small.
Place information inquiry message may include location information indicator, and instruction will be included in location information response message
In location information type.For example, the location information of request can be the cell ID of the cell where respective user equipment
（ID）.Alternatively or additionally, location information can indicate the geographical location of user equipment, the geographical location for example using
Based on GPS（Global positioning system）Technology or pass through network（Such as the positioning service ordered for user）To measure.It lifts
For another example, it is prerequisite that location information indicator, which can ask cell ID, and asking geographical location to be can
Choosing.
Place information inquiry message may include time started information, instruction the 2nd PTM transmission start time and
User equipment starts at least one of time point or waiting period of unicast retrieval.Time started information can for example provide by
Some number is construed to the time until being about to the 2nd PTM transmission since the reception of place information inquiry message, such as 20 seconds.
Alternatively, it is possible to by time started information interpretation at for example according to Greenwich（Greenwich）Standard time（GMT）Or
The time point of universal time.For lifting another example, time started information can also include other than comprising value
The instruction for how explaining the value is closed, that is, is construed to the period under GMT or time point.
Place information inquiry message may include address information, and instruction is used for transmission the data into content transmission area
Unicast retrieval address.UE can not receive the content transmitted and transmitted via the 2nd PTM sometimes.One reason may be
In user equipment is located in group coverage rather than in content transmission area.Then, UE can be used to by described
The unicast communication for the address that location information provides（Automatically or application family request）So as to from the address search content.The unicast
Communication can be any PTP sessions, such as such as FTP（File Transfer Protocol）Or HTTP（Hypertext transfer protocol）Session etc
PTP IP（Internet Protocol）Session.The PTP sessions can be for example using with the other UMTS bearer services of interactive traffic class
To realize.
Place information inquiry message may include operating lag information, indicate for sending location information response message
Time delay.In the case where many user's registrations are organized and serviced, many UE can respond the place information inquiry message.Institute
In the case of having UE while responding, congestion is for example likely to occur in network at radio interface.It would thus be advantageous to which UE's answers
Answering the time has dispersion.Operating lag information, which can specify that, is construed to receive the time interval after location information query messages
Value, such as 5 seconds.Each UE can be responded in the predetermined time interval on random time point, such as 1.1 or 3.7
It is responded after second.Additionally or alternatively, operating lag information can indicate the earliest response time, or can be to group
All UE only provide regular time delay.For example, two group services can provide relevant content（As the new of plain text
It hears, and as multimedia news, but includes the content of text of first service）.Then, operating lag information can be chosen
It is selected to be different the two services.Certainly, operating lag information may include the combination of the above.
The method may include other steps：The content for unicast retrieval is provided using such as file repair service
Data.3GPP MBMS provide the file repair service as specified in TS 26.346.The service can be reused for carrying herein
The technology gone out.In the case where UE is not located in content transmission area, which can use this known file repair service
To retrieve content via unicast communication.
Content transmission area can be determined to be the geography of the network where the user equipment project including at least predetermined amount
Region.The amount of user equipment project can be defined as percent value, user density value or absolute value.For example, group coverage
Radio plot can be determined to be and belong to content transmission area, if the single UE in the cell responds place information inquiry
If message.However, the threshold value can also be configured to the number of users of bigger.For instance, it may be required five users from
It is responded in cell or cell group, so that the cell or cell group become a part for the content transmission area.According to this
The user that algorithm will not be able to receive the 2nd PTM transmission has an opportunity to receive the content via unicast communication.
The step of determining content transmission area may include the position for predicting the user equipment project during the 2nd PTM is transmitted
It sets.Location information response message allows approximate place or position that mobile terminal is determined when receiving place information inquiry message
Snapshot.The movement of user（It is determined by other technologies commonly known per se）It can be used for predicting when the 2nd PTM transmits beginning
And/or when transmit stop when this time point its position.Additionally or alternatively, the prediction can use for example with institute
State other related data of cell itself.The cell can for example include the geographic area along highway or railway.Such as
Fruit UE is responded out of this cell, then the UE can will be transported along the highway or railway with certain probabilistic forecasting
It is dynamic.
The prediction can be used for optimizing the determination of content transmission area so that it includes during the second PTM is transmitted
The geographic area of network at least where the user equipment project of predetermined amount.For example, during the 2nd PTM is transmitted where UE one
A or multiple cells（According to the prediction）It is possibly comprised in content transmission area.
For static or slow movement（Such as pedestrian）User UE for, optimization may be unnecessary because
Their position will not substantially change during PTM processes.On the other hand, the user in any kind of moving vehicle
Position may promptly change.Optimization will be advantageous in this case, to predict the movement of these users.Small
Can will include into heat along next cell of highway/track in the case that area covers motorway or railroad track
In the determination in point region.
The method may include other steps：It is determined according at least one of location information response message and corresponding
The related identity information of at least one of the user of user equipment and respective user equipment.For example, can be for the mesh of management
Determination IMSI（International Mobile Subscriber identity）、TMSI（Temporary Mobile Subscriber identity）And/or IMEI（International mobile device body
Part）.This whether or how is continually actually used for example, it may be possible to interestingly detect and have subscribed a group user for service
Service, or detect which content he or she prefers.It is alternatively possible to collect the statistic of response message（Such as so as to true
Determine the size etc. of user group）.
Under current context, group service can for example be disappeared place information inquiry by using the first broadcast service
Breath is transferred in group coverage and prepares the distribution by the second broadcast transmission for actual content accordingly to realize.Therefore,
Broadcast transmission is used for realizing the service similar to multicast service.For example, it may be desirable to be registered to the service.Corresponding to location information
Add before the location information that the registration of the UE of query messages can receive in considering the location information response message from the UE
To check.If the UE is not registered, its response message can not be received, or if had received, abandon.
According to another aspect of the present invention, it is proposed that enabled in network for controlling user equipment to receive PTM
The method of content.The method comprising the steps of：Location information query messages are received from the network via the first PTM transmission；Response
It sends the location information response message comprising location information in the place information inquiry message and is transmitted for the 2nd PTM, institute
State the position of location information instruction user equipment；And prepare via the 2nd PTM transmission and at least one of unicast retrieval into
Row content reception.
This method can also include step：The content is received via the 2nd PTM transmission.Additionally or alternatively,
The content can be received via unicast retrieval.For example, if for the 2nd PTM transmission all or part of duration and
Speech, UE is not in the content transmission area that the network determines, then in this way situation may be exactly.UE can not be received in described
Hold it is some or all of there is likely to be other reasons, such as the technical failure about radio interface or unfavorable shape
Condition.
Location information may include the cell ID of the cell of the network where user equipment.Additionally or alternatively,
Location information may include the geographical location of user equipment.
In another step, unicast retrieval timer can be set in a user device.The setting can pass through reception
Place information inquiry message or any event appropriate trigger.
The timer value of unicast retrieval timer can be based on believing at the beginning of being included in place information inquiry message
It ceases to determine.Time started information can indicate time point or the waiting period of unicast retrieval, or when instruction PTM transmission beginnings
Between.For example, if time started information is indicated starts the 2nd PTM transmission in 20 seconds, the timer can be set
It is set to slightly greater value, such as 30 seconds.
In the case where being transmitted without reception group data via PTM, content-data can expire in unicast retrieval timer
It is retrieved later via unicast retrieval.Some possibility not up to transmitted via PTM and carry out content distribution have had been outlined above
The reason of.
The step of can randomly postponing to send location information response message.For example, can in location information query messages
It can have received that operating lag information.It alternatively, can in the case of not being explicitly indicated in location information query messages
Random delay is arranged by UE.It is this that the random delay being arranged in predetermined time interval be may, for example, be into spy
Due to network.
According to another aspect of the present invention, it is proposed that the computer program product including program code sections, the journey
Sequence code section when the computer program product operates on one or more computing devices for executing methods described herein
The step of any one of aspect.The computer program product can store on a computer readable recording medium.
According to an additional aspect of the present invention, it is proposed that network node realizes that PTM enables the group Service controll in network
Component is distributed so as to control content.The network node includes：First interface is suitable for starting location information query messages and is taken to group
The first PTM transmission in business region；Second interface is suitable for receiving location information response message, each location information response message
Including instruction has received that the location information of the position of the user equipment of the place information inquiry message；Processing unit is fitted
Content transmission area is determined in the location information response message based on reception；And third interface, it is suitable for starting to content biography
2nd PTM in defeated region is transmitted.
According to another aspect of the present invention, it is proposed that another network node realizes that PTM is enabled in network environment
Group service control component is distributed so as to control content.The network node includes：First interface is suitable for starting place information inquiry
First PTM transmission of the message to group coverage；Second interface is suitable for receiving location information response message, each position letter
Breath response message includes the location information of the position for the user equipment that instruction has received that the place information inquiry message；Processing
Unit is suitable for determining content transmission area based on the location information response message of reception；And the 4th interface, it is suitable for control
The offer of content for unicast retrieval.
The network node can also include the 5th interface, which is suitable for using the text for example according to 3GPP TS 26.346
Part reparation service provides the group data for unicast retrieval.5th interface can be with the 4th interface phase of the network being outlined above
Together.
According to an additional aspect of the present invention, it is proposed that user equipment, the content reception being suitable in the enabled networks of PTM.
The user equipment includes：First interface disappears suitable for receiving place information inquiry from the network via the first PTM transmission
Breath；And second interface, it is adapted for the place information inquiry message and sends the location information comprising location information and ring
Message is answered to be controlled for content distribution, the position of the location information instruction user equipment.It is connect it is alternatively possible to provide third
Mouthful, it is suitable for via a reception content in the 2nd PTM transmission and unicast retrieval.
User equipment according to the above-mentioned realization method of the present invention can also include the processing for realizing unicast retrieval timer
Device.The processor may be adapted to that the unicast retrieval timer is arranged.The setting can pass through place information inquiry message
It receives to trigger.
Description of the drawings
Hereinafter, with reference to the accompanying drawings shown in exemplary embodiment further describe the present invention, in the accompanying drawings：
Fig. 1 is the schematic diagram of the embodiment of PLMN；
Fig. 2 is the block diagram for the functional component for illustrating network node embodiment and user equipment embodiment；
Fig. 3 is the flow for illustrating the first method embodiment for controlling the content distribution in the enabled network environment of broadcast
Figure；
Fig. 4 is the flow for illustrating the second method embodiment for controlling the content distribution in the enabled network environment of broadcast
Figure；
Fig. 5 is to illustrate for controlling the first method embodiment for enabling network reception content from broadcast in a user device
Flow chart；
Fig. 6 is to illustrate for controlling the second method embodiment for enabling network reception content from broadcast in a user device
Flow chart；
Fig. 7 is to illustrate for controlling the third method embodiment for enabling network reception content from broadcast in a user device
Flow chart；
Fig. 8 is the Message sequence charts for illustrating to broadcast the content distribution in enabled network environment.
Specific implementation mode
In the following description, for purposes of explanation and not limitation, specific details is set forth, such as including ad hoc networks
The particular network topological structure of network node, communication protocol etc., in order to provide the thorough understanding for the present invention.Art technology
Personnel should be appreciated that the present invention can realize in the other embodiment for deviateing these specific details.For example, people in the art
Member is it should be understood that the present invention can utilize PTM service, multicast/broadcast mechanism or its different from 3GPP MBMS standards
His PTM communication features realize that these features are discussed below to illustrate the present invention.In addition, the present invention can be can
It is realized in any network that mobile subscriber is attachable to.For example, other than mobile network, the present invention is additionally or alternatively
It may be used on WLAN, bluetooth, DVB or similar wireless network, and be also applied to Wireline（wireline）Net
Network, such as the Intranet with the company of some or many individual subsidiaries.
Those skilled in the art are to be further understood that function explained below can use individual hardware circuit, make
With in conjunction with by programming microprocessor or all-purpose computer come work software, using application-specific integrated circuit（ASIC）
And/or use one or more digital signal processors（DSP）To realize.It is to be further understood that when the present invention is described as
When a kind of method, it can also realize that wherein the memory is compiled in computer processor and being coupled in the memory of processor
There are one codes or multiple programs, described program realize method disclosed herein when executed by the processor.
Although exemplary embodiments described below is based on broadcast and enables network and PTM transmission to be broadcast transmission,
It will be appreciated by those skilled in the art that can also use other PTM transmission technologys, such as the PTM technologies based on multicast transmission or
Other PTM technologies that person's future develops.
Terms used herein " interface " include " functional interface ".Functional interface refers to being included in functional component or structure
（Hardware and/or software component or functional entity）Interior, purpose is the minor structure communicated with other external components or structure.Example
Such as, if functional interface for its provide be software component to the structure of connection function if, which can purely be
Software realization.
Referring to Fig.1, which schematically illustrate broadcast to enable network or one embodiment of PLMN 150.PLMN 150 spreads all over
Geographic area 152.The region 152 may include a state or several states, and may include rural area and urban area（Do not show
Go out）.PLMN 150 can also include the region in a state or several states, or may include the only only a part in a state.
Group coverage 154 is limited in PLMN 150.Coverage 154 covers the reasonable fraction of PLMN 150, still
Group coverage can usually be limited for entire PLMN or only for the very small part of PLMN.Group coverage
154 are illustrated as the region of single simple shape.However, group coverage generally may include several geographic sub-areas, this is a little
Region may be separated from each other.Group coverage can also be with hole, i.e., it can surround the region that broadcast enables network, wherein
The group service for being assigned with group coverage is not provided with.
For specific content distribution, PLMN 150 may lead in being transmitted to the first broadcast in group coverage 154
Place information inquiry message is accused.Location information response message is from several UE（It is not shown）Place receives.Based on these responses
Message, network 150 determine content transmission area.The region includes the geographic area of user density above the predetermined threshold, such as
Wireless area（It is not explicitly shown）.For example, at least five users may must be positioned at wireless area（Or in soft-combine
In the case of be cell group）Inside, so as to by the wireless area（Or cell group）Included in content transmission area.The threshold value can
It is higher than the region of the threshold value to be configured so that content-data to user density（That is " hot spot region "）Broadcast transmission providing
Source use aspects are efficient compared with multiple unicast communications.
In this exemplary embodiment shown in Fig. 1, content transmission area includes the subregion of group coverage 154
156,157 and 158.For example, subregion 156 can cover city, smaller subregion 157 is overlapped with rural area, and subregion 158 can
To include the wireless area extended along connection city and rural highway.
The second broadcast transmission for distributing content will be carried out only in subregion 156,157 and 158.Except these regions
Or the user that lacks technical capability will have to carry out reception content via unicast retrieval.
Fig. 2 schematically shows the functional component of 204 embodiment of 200 embodiment of network node and user equipment, institutes
It states network node 200 and realizes that broadcast enables the group service control component in network 202 so that control content is distributed, the user sets
Standby 204 are suitable for the reception content from network 202.
In the present embodiment, network 202 is mobile network, such as UMTS network.Network 202 may, for example, be Fig. 1's
PLMN 150.The group service control component that node 200 is realized can be one of the BM-SC or BM-SC of UMTS network 202
Point.Network node 200 includes first interface 206, is suitable for starting location information query messages to group coverage 154（Referring to
Fig. 1）First broadcast transmission, wherein the message can be received by UE 204.Node 200 further include be suitable for for example from UE 204 with
And many similar UE（It is not shown）The middle second interface 208 for receiving location information response message.Disappeared using location information response
Breath, UE 204 back report the location information of the position of instruction user equipment 204.
Network node 200 further include be suitable for determined based on the location information response message of reception content transmission area 156,
157,158 processing unit 210.Third interface 212 is suitable for starting to the second broadcast in content transmission area 156,157,158
Transmission, UE 204 are likely located at or may not be located at the content transmission area.Second broadcast transmission includes a such as text
The content of part or multiple files or stream data etc.
4th interface 214 of network node 200 is suitable for for example being not included in the content transmission area in UE 204
In the case of offer of the control for the content of unicast retrieval, and so that content must be retrieved via unicast communication.Interface 214
For example the time of content offer can be indicated with content-data sources traffic and possibly indicate retrieval parameter, such as each
The maximum bandwidth of user.
4th interface 214 is suitable for using for example being controlled for unicast according to the file repair service of 3GPP TS 26.346
The offer of the content of retrieval.Additionally or alternatively, which is further adapted for carrying out control content offer according to other mechanism.
Message and data are transmitted via the network 216 in Fig. 2.Network 216 can be one that broadcast enables network 202
Point.For example, network 216 may include the core network of mobile network 202 and the part of radio access network.In order to broadcast
Place information inquiry message and content-data, from content-data source（It is not shown）Across network 216 to UE 204 and other UE
The cell at place follows distribution tree.Content-data source need not and usually it is not identical as BM-SC 200, but will have its from
The network address of body.
User equipment 204（Such as mobile phone）Including being suitable for receiving from network node 200 via the first broadcast transmission
The first interface 218 of place information inquiry message.Second interface 220 is adapted for the place information inquiry message and sends packet
The location information response message of the location information of 204 position of the user equipment containing instruction.The location information is expected to be used for second
Broadcast transmission.
Third interface 222 is suitable for reception content.The content can be wide in second started by the interface 212 of BM-SC 200
It is received during broadcasting transmission.Alternatively, which can receive via unicast communication, wherein the content number for unicast retrieval
According to offer controlled by the interface 214 of network node 200.In principle, such as in the content-data being broadcasted for example due to passing
Defeated failure and in the case of being destroyed, it is interior that this can also be received via the second broadcast transmission and additionally via unicast communication
Hold data.
User equipment 204 includes the processor 224 for realizing unicast retrieval timer.Processor 224 is suitable for setting unicast and examines
Rope timer.The setting is triggered by the reception of place information inquiry message.
With reference to Fig. 3, flow chart 100 shows the independent step of first method embodiment, which uses
It is broadcasted in control and enables network environment（Such as the PLMN 150 of Fig. 1）In content distribution.
In a step 102, start location information query messages or " hotspot query message " to group coverage（Such as to figure
In 1 group coverage 154）First broadcast transmission.For the pre-defined group coverage of the service.Hotspot query is disappeared
Breath broadcast（Such as use MBMS broadcast modes）Into entire group coverage 154.
At step 104, location information response message is received.Each location information response message includes that instruction is received
The location information of the position of the user equipment of the place information inquiry message.
In step 106, content transmission area 156,157,158 is determined based on the location information response message of reception.
The step may include waiting for the sub-step of these response messages arrival.Stand-by period can be in the range of hundreds of milliseconds to several seconds
It is interior.Then, about comprising location information come assess wait for be spaced in receive response message.Accordingly, it may be determined that hot
Point region 156,157,158.
In step 108, the second broadcast transmission of content transmission or hot spot region 156,157,158 is started to.Another
In a step 109, reception response, the UE for receiving response transmission and receiving the content from confirmation can be collected.Step 109
It can be necessary or can be optional step.
With reference to Fig. 4, flow chart 120 shows the independent step of second method embodiment, which uses
The content distribution enabled in network environment is broadcasted in control.The second method embodiment can with described above with reference to Fig. 3
One embodiment of the method is combined.
In step 122, start first broadcast transmission of the location information query messages to group coverage.For described interior
The pre-defined group coverage of point-to-multipoint transmission held.In step 124, location information response message is received.Each position
Info response message includes the location information of the position for the user equipment that instruction has received that the place information inquiry message.
In step 126, content transmission area is determined based on the location information response message of reception.In step 128,
The content is provided to carry out unicast retrieval.
With reference to Fig. 5, flow chart 130 shows the independent step of first method embodiment, which uses
In control reception content in network is enabled from broadcast in a user device.
In step 132, location information query messages are received from the network via the first broadcast transmission.In step
In 134, in response to the place information inquiry message, it is wide for second to send the location information response message comprising location information
Transmission is broadcast, the location information indicates the position of user equipment.
With reference to Fig. 6, flow chart 140 shows the independent step of second method embodiment, which uses
In controlling the content reception in user equipment.
In step 142, location information query messages are received from the network via the first broadcast transmission.In step
In 144, in response to the place information inquiry message, the location information response message for including location information, the position letter are sent
Breath indicates the position of user equipment.In step 146, the content is received.
Fig. 7 is the flow chart 160 for the independent step for showing third method embodiment, which is used for
Control enables reception content in network from broadcast in a user device.
In step 162, user equipment（Or client）Registration group service.In example shown in Fig. 7, group service can be
File distributing（It transmits）Service.One or more files of distribution can include sport sports events or any other content.
The registration is the precondition as group membership.
File distribution service is push（push）Service, wherein service provider are by one or more file push into UE
（Such as mobile phone）In memory.File distribution service is typically event-oriented.For example, in the final goal of match
（goal）It will be pushed immediately into the phone memory of all registration users in relation to the video clipping finally scored after occurring.
In step 164, as the preparation of content distribution, location information query messages are received（Also referred to as hot spot is looked into
Ask message/file）.In step 166, in response to the query messages, user equipment prepares and sends temporary comprising the UE
The location information response message of the ID of the cell at place.It is triggered by the reception of the query messages, also starts unicast retrieval timing
Device.
In step 168, UE waits for the broadcast transmission of the content to start.Under 170 the case where receiving broadcast transmission
（The UE is inside content transmission area）, the file to be transmitted via broadcast transmission is received in step 172.MBMS was broadcasted
Journey has carried out detailed regulation in 3GPP TS 23.246, thus will not be further described here.In step,
Once being successfully received the file of transmission, then stop unicast retrieval timer.In step 176, according to MBMS download specification into
The further processing of row.For example, the reception reporting process according to 9.4 sections in TS 26.346 can be executed.This method is in step
Terminate in 178.
In the UE not in the case of the inside of content transmission area, wait the step 168 that transmission to be broadcast starts that will continue,
Until unicast retrieval timer expires in step 180.Due to timer expiration, will be examined via unicast communication in step 182
Rope file, i.e. file transmit session and will be carried out via interaction channel.Unicast address may be known for the UE from registration
And/or may be provided in hotspot query message.The UE may randomly postpone the beginning of unicast communication to prevent content
At data source or the network（Wireless interface）In overload.In step 178, success of this method branch in content file
Terminate after unicast retrieval.
Fig. 8 shows that broadcast enables the Message sequence charts of another embodiment of the content transmission in network environment（It adjusts
Use flow）.First UE 310 and the 2nd UE 312 involved in the message sequence.In addition, depicting the GGSN that broadcast enables network
（Gateway GPRS Support Node）314.The network further includes the BM-SC 315 for including three functional components 316,318,320, these
Functional component is considered as individual unit for purposes of illustration in fig. 8.In general, the component of BM-SC 315 can be
It realizes or can be realized on several individual hardware cells on single hardware cell.
Reference numeral 316 indicates to broadcast the BM transmitters of transmission session for starting and controlling MBMS.318 table of reference numeral
Show the functional component for the known file repair service of 9.3 sections from 3GPP TS 26.346.The feedback capture of BM-SC 315
Device 320 receives location information response message and determines content transmission area based on the location information response message of reception.To the greatest extent
Pipe is the part of BM-SC 315, but some or the part in subdivision 316,318,320 can be with the networks of their own
Address, such as can be with direct addressin feedback collector 320.
Reference numeral 1）-9）Indicate the basic step of the PTM content transmission processes according to embodiment illustrated in fig. 8.In step
1）In, one or more files are ready to distribute for the group service considered.Therefore, BM transmitters 316 pass through in TS 23.246
Defined MBMS session starts process starts MBMS broadcast sessions.In this respect, triggering GGSN 314 provides for MBMS carriers
The offer in source.
After bearer setup, in step 2）It is middle to use the Transport FLUTE protocol in relation to MBMS bearer services（In this respect referring to
7 sections of TS 26.346）Pass through IP-UDP-ALC（IP Internet Protocols, udp user datagram protocol, ALC asynchronous layered codings）
Transmit hotspot query message（Place information inquiry message）.The hotspot query message is broadcasted（Use MBMS broadcast modes）To whole
A group of coverage.
MBMS service region is configured to the group coverage of described group of service.Therefore, for MBMS groups service,
Hotspot query message is transferred in entire group coverage.
The cell identifier of hotspot query information query group membership（ID）.It is also to URI（Uniform resource identifier）Notice
File transmits the unicast retrieval of session, that is, includes the address of feedback collector 320.
Furthermore, it is possible to which time started information is tied to the URI, and provide it the hotspot query message.It should
How long time started information instruction UE 310,312 should wait transmission to be broadcast.For example, 20 seconds values can be indicated.
In addition, the hotspot query message can include response time to protect uplink and server in order to avoid
It is influenced by overload and congestion condition.Each UE should randomly postpone institute in the time interval that operating lag information indicates
State response.
After the hotspot query message is transferred in group coverage, in step 3）Middle BM transmitters 316 are dismantled
MBMS carriers.
In step 4）In, once receiving the hotspot query message, UE 310,312 is responded and is led to
The address for crossing the feedback collector 320 indicated into the hotspot query message sends location information response message to report theirs
Position.The position reported may include the cell ID of the cell of key group coverage, in step 2）Described in hotspot query
Message distribution is in it.Additionally or alternatively, other location informations, such as geographical location can be sent.
Use known IP-TCP-HTTP protocol stacks（TCP transmission control protocol, http hypertext transfer protocol）Send UE
310,312 and the other UE of the hotspot query message is had received that（It is not shown）Location information response message.Due to
The hotspot query message contains the operating lag letter of time delay of the instruction for sending the location information response message
Breath, thus the response message of difference UE will randomly be postponed.This point, wherein UE 310 ratios are schematically illustrated in Fig. 8
UE 312 postpones its response with the amount of bigger.In this way, it avoids due to all response UE while sending response message
Caused by uplink overload.
In step 5）In, feedback collector 320 is used as the interface unit of BM-SC 315, and receives UE 310,312（With
And many other UE）Location information response message.Feedback collector 320 also disappears for the location information response based on reception
Breath determines content transmission area.For example, the content transmission area may include all cells, therefrom at least five UE have responded institute
State hotspot query message.In addition, movements of these UE along highway and railroad track can be considered in feedback collector 320, until
During the time of the practical beginning of content transmission and the transmission.Cell appropriate may be embodied in the content transmission area
In.The feedback collector can also be that the content transmission determines broadcast distribution tree.
The feedback collector is determined content transmission to the report of BM transmitters 316 comprising one or more hot spot regions
Region and broadcast distribution tree.In step 6）In, BM transmitters 316 establish new MBMS broadcast bearers.The carrier usually can be with
It is any legacy interactive/streaming carrier suitable for the content transmission.The carrier is towards the content transmission area
Cell is established, i.e., the hot spot that determines towards feedback collector 320 is established.In step 7）In, passed through using Flute processes
The file for being intended for distribution is transmitted in the content transmission area by IP-TCP.In step 8）In, when BM transmitters 316 are released
When having put MBMS carriers, this document transmits conversation end.
In step 7）Period, only UE 310 receive the content for being intended for distribution.On the other hand, UE 312 is located at described
Except content transmission area, i.e., except hot spot.UE 312 may be unique UE in its cell, and response hotspot query disappears
Breath, and the cell thus by feedback collector 320 determine at the part for not being the content transmission area.Therefore, UE
312 must retrieve the content via unicast communication.In step 9）In, UE 312 uses HTTP-TCP from hotspot query message
Content is fetched at the unicast URI of middle offer.For this purpose, being taken using the known MBMS files reparation realized in functional component 318
Business.For example, UE 312 can start HTTP retrievings in 30 seconds after receiving hotspot query message.Disappear according to hotspot query
Information at the beginning of including in breath, UE 312 should after receiving the hotspot query message about 20 seconds it is just received
MBMS broadcast transmission.
Such as according to above example it becomes obvious that can be to avoid the pure multicast transmission for the group management function for including complexity
Expense, while improving the efficiency of content distribution compared with pure broadcast transmission, the pure broadcast transmission is included content transmission
To with potential low user density or even without in the region of user.
Compared with known broadcast/multicast service, by properly configuring PTM service, the operator of PLMN as described above
It can be minimized the use of Internet resources.For example, operator can be to be included in content according to the network topology structure of network
It can be that user density configures threshold value that Minimum Area in transmission region, which selects suitable size or operator, so as to best
Ground service registration is to the user of group, the excessive waste without causing Internet resources.
These technologies, which can be implemented advantageously in, for example to be broadcasted on the broadcast feature for enabling network.In addition, in a kind of reality
In existing mode, it is not necessary to handle new data in a user device；The UE of any operation both knows about its position, at least its Internet access
The ID of cell where it.
Generally speaking, the technology proposed allows to provide " multicast shape " service, without really realizing known multicast service
Entire feature frame.
Although having been combined the preferred embodiment of the present invention describes the present invention, but it is to be understood that the description is only used
In the non-limiting purpose of explanation.The present invention should be limited only by claims appended hereto.
Claims (23)
1. one kind enabling network for controlling broadcast（150）In content distribution method, the method includes the steps：
Start location information query messages to group coverage（154）In first broadcast transmission, described group of coverage needle
Content distribution service is pre-defined；
Location information response message is received, each location information response message includes that instruction has received that the location information
The user equipment of query messages（204,310,312）Position location information；
Content transmission area is determined based on the location information response message of reception（156,157,158）, wherein the content passes
Defeated region includes the geographic area of the density of user equipment above the predetermined threshold；And
Prepare to carry out via unicast retrieval and to the second broadcast transmission in the content transmission area at least one of working as
Content distribution.
2. according to method of claim 1,
Wherein described group of coverage is geographic area, and the content transmission area includes the son in described group of coverage
Region.
3. according to the method for claim 2,
Wherein described group of coverage is the set of cells of the network and the content transmission area includes coming from described group
The subset of the set of cells of coverage.
4. according to the method for any one of claim 1-3,
The wherein described place information inquiry message includes location information indicator, and the indicator instruction will be included in the position
The type of location information in info response message.
5. according to the method for any one of claim 1-3,
The wherein described place information inquiry message includes time started information, the second broadcast of time started information instruction transmission
The time of beginning and the user equipment start at least one of time point or waiting period of unicast retrieval.
6. according to the method for any one of claim 1-3,
The wherein described place information inquiry message includes address information, and the instruction of described address information is used for transmission the content and passes
The address of the unicast retrieval of data in defeated region.
7. according to the method for any one of claim 1-3,
The wherein described place information inquiry message includes operating lag information, and the operating lag information instruction is described for sending
The time delay of location information response message.
8. according to the method for any one of claim 1-3,
Including step：The content for unicast retrieval is provided using file repair service.
9. according to the method for any one of claim 1-3,
The wherein described content transmission area is determined to be including in the network at least where the user equipment project of predetermined amount
Geographic area.
10. according to the method for any one of claim 1-3,
The step of wherein determining the content transmission area includes the position for predicting the user equipment project during the second broadcast transmission
Set, and wherein by the content transmission area determine at include according to it is described prediction second broadcast transmission during the network
In geographic area at least where the user equipment project of predetermined amount.
11. according to the method for any one of claim 1-3,
Including other step：At least one of response message determines and respective user equipment and phase according to the positional information
Answer the related identity information of at least one of user of user equipment.
12. one kind is for controlling user equipment（204）For broadcasting the method for enabling the content reception in network, the method
Including step：
Via the first broadcast transmission location information query messages are received from the network；
Location information response message is sent in response to the place information inquiry message for being taken for content distribution
It is engaged in and determines content transmission area in pre-defined group coverage, the location information response message includes indicating the use
The location information of the position of family equipment, wherein the content transmission area include the density of user equipment above the predetermined threshold
Geographic area；And
In preparing at least one of to work as via unicast retrieval and to the second broadcast transmission of the content transmission area and carrying out
Hold and receives.
13. according to the method for claim 12,
It further include step：The content is received via the second broadcast transmission.
14. according to the method for claim 12 or 13,
It further include step：The content is received via unicast retrieval.
15. according to the method for claim 12 or 13,
The wherein described location information includes the cell ID of the cell where user equipment described in the network and the use
At least one of the geographical location of family equipment.
16. according to the method for claim 12 or 13,
It further include step：Unicast retrieval timer is set.
17. according to the method for claim 16,
The timer value of the wherein described unicast retrieval timer is based at the beginning of being included in the place information inquiry message
Between information determine.
18. according to the method for claim 16,
Further include in the case where not having or the reception content cannot be transmitted via broadcast, in the unicast retrieval timer
The content is retrieved via unicast after expiring.
19. according to the method for claim 12 or 13,
The step of wherein sending the location information response message is randomly postponed.
20. a kind of network node（200）, realize that broadcast enables the group service control component in network environment so as to control content
Distribution, wherein the network node includes：
First interface（206）, it is suitable for starting location information query messages to the first broadcast transmission in group coverage, institute
A group coverage is stated to pre-define for content distribution service；
Second interface（208）, it is suitable for receiving location information response message, each location information response message includes to indicate
The received location information of the position of the user equipment of the place information inquiry message；
Processing unit（210）, it is suitable for determining content transmission area based on the location information response message of reception, wherein described
Content transmission area includes the geographic area of the density of user equipment above the predetermined threshold；
Third interface（212）, it is suitable for starting to the second broadcast transmission in the content transmission area.
21. a kind of network node（200）, realize that broadcast enables the group service control component in network environment so as to control content
Distribution, wherein the network node includes：
First interface（206）, it is suitable for starting location information query messages to the first broadcast transmission in group coverage, institute
A group coverage is stated to pre-define for content distribution service；
Second interface（208）, it is suitable for receiving location information response message, each location information response message includes to indicate
The received location information of the position of the user equipment of the place information inquiry message；
Processing unit（210）, it is suitable for determining content transmission area based on the location information response message of reception, wherein described
Content transmission area includes the geographic area of the density of user equipment above the predetermined threshold；
- the four interface（214）, it is suitable for controlling the offer of the content for unicast retrieval.
22. a kind of user equipment（204）, for broadcasting the content reception in enabled network, wherein the user equipment includes：
First interface（218）, it is suitable for receiving location information query messages from the network via the first broadcast transmission；
Second interface（220）, be adapted for the place information inquiry message and send location information response message with
For determining that content transmission area, the location information are rung in the group coverage pre-defined for content distribution service
It includes the location information for the position for indicating the user equipment to answer message, wherein the content transmission area includes user equipment
The geographic area of density above the predetermined threshold;And
Third interface（222）, it is suitable for broadcasting in transmission via unicast retrieval and to the second of the content transmission area
At least one reception content.
23. the user equipment of claim 22,
Further include realizing unicast retrieval timer and the processor suitable for the unicast retrieval timer is arranged（224）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510440550.XA CN105099726B (en) | 2006-06-02 | 2006-06-02 | Technology for control point to multipoint data transmission |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510440550.XA CN105099726B (en) | 2006-06-02 | 2006-06-02 | Technology for control point to multipoint data transmission |
| CNA2006800547731A CN101449514A (en) | 2006-06-02 | 2006-06-02 | Technology for the control of point to multipoint data transmission |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800547731A Division CN101449514A (en) | 2006-06-02 | 2006-06-02 | Technology for the control of point to multipoint data transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105099726A CN105099726A (en) | 2015-11-25 |
| CN105099726B true CN105099726B (en) | 2018-09-11 |
Family
ID=54601434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510440550.XA Active CN105099726B (en) | 2006-06-02 | 2006-06-02 | Technology for control point to multipoint data transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105099726B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7631080B2 (en) * | 2000-06-20 | 2009-12-08 | Nds Limited | Unicast/multicast architecture |
| US7307978B2 (en) * | 2001-05-01 | 2007-12-11 | Avago Technologies Enterprise Ip (Singapore) Pte Ltd | Method and system for routing packets through a network by employing geographical position data |
| JP2003179606A (en) * | 2001-10-04 | 2003-06-27 | Ntt Docomo Inc | Multicast address allocation apparatus, information distribution apparatus, information distribution system, multicast address allocation method, information distribution method, multicast address allocation program, information distribution program and recording medium |
| US7379738B2 (en) * | 2002-08-05 | 2008-05-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Information service broadcast control in a wireless communication network |
| BRPI0512246A (en) * | 2004-06-16 | 2008-02-19 | Lg Electronics Inc | transmission / multiple transmission service method based on user location information |
-
2006
- 2006-06-02 CN CN201510440550.XA patent/CN105099726B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105099726A (en) | 2015-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1314331B1 (en) | Method and apparatus for performing coverage control for multicast services in a wireless network | |
| EP2022208B1 (en) | Technique for controlling point-to-multipoint data transmissions | |
| EP1753165B1 (en) | The method of data transmission of multimedia broadcast/multicast service | |
| JP4658071B2 (en) | Method and apparatus for providing multimedia broadcast / multicast service in visited network | |
| EP1521492B1 (en) | Methods for transmission of service availability information in combination with a point-to-multipoint indication for a multimedia broadcast/multicast service | |
| US7903593B2 (en) | Multicast transmission in packet based cellular networks | |
| JP4382804B2 (en) | Method and apparatus for providing multimedia broadcast / multicast service (MBMS) for user equipment moving between cells in a cellular mobile communication system | |
| CN100579112C (en) | Distributed caching and redistribution system in a wireless data network and method thereof | |
| EP1796405B1 (en) | Method and apparatus of service identifying and routing in multimedia broadcast/multicast service system | |
| EP1324560B1 (en) | Communication over a selected part of a network | |
| US8180356B2 (en) | Method for notifying changes of cell information in multimedia broadcast/multicast service | |
| US20060107287A1 (en) | Multimedia broadcast/multicast service announcement and notification | |
| US20050076369A1 (en) | Method and apparatus for assigning temporary mobile group identity in a multimedia broadcast/multicast service | |
| CN107040995A (en) | Broadcasting method and device, the method for building up of MBMS carryings of car networking communication V2X message | |
| CN101009904A (en) | Method and system for signaling in broadcast communication system | |
| KR100733911B1 (en) | System for providing mbms and method thereof | |
| KR20060042094A (en) | Network system, data transmission device, terminal device and multicasting method | |
| US8743767B2 (en) | Methods of obtaining service information to receive broadcasting service in user equipment, and service information announcement methods performable in service center and server | |
| JP2003087249A (en) | Transmission system of group message | |
| CN101529932A (en) | Method and apparatus for sharing transport channel for node serving plural cells with multimedia broadcast/multicast | |
| WO2010062475A1 (en) | Emergency alert service for inactive mobile stations in a communication system | |
| CN1810049B (en) | Method and apparatus for providing session data to a subscriber to a multimedia broadcast multicast service | |
| CN105099726B (en) | Technology for control point to multipoint data transmission | |
| Oh et al. | A scheme for location-based Internet broadcasting and its applications | |
| Wetterwald | A case for using MBMS in geographical networking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |