CN105099726A - Technology used for controlling point-to-multipoint data transmission - Google Patents
Technology used for controlling point-to-multipoint data transmission Download PDFInfo
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- CN105099726A CN105099726A CN201510440550.XA CN201510440550A CN105099726A CN 105099726 A CN105099726 A CN 105099726A CN 201510440550 A CN201510440550 A CN 201510440550A CN 105099726 A CN105099726 A CN 105099726A
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- 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
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- 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
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- 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
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Abstract
The invention discloses a technology used for controlling point-to-multipoint data transmission. The invention provides a technology used for controlling data point-to-multipoint (PTM) transmission to a user group through a PTM enabling network (150). In first PTM transmission, position information query messages are distributed into a group service area (154). Once the query messages are received, a user equipment project responses by a position information response message having position information indicting the position of the relative user equipment. Based on the received position information response messages, content transmission areas (156, 157, 158) are determined. And then, a second PTM transmission is launched to the content transmission areas for the distribution of contents. Furthermore, the contents are capable of being distributed by unicast retrieval.
Description
The divisional application of the application for a patent for invention of " for the technology of control point to multipoint data transmission " that the application is application number is 200680054773.1, the applying date, to be June 2, denomination of invention in 2006 be.
Technical field
Present invention relates in general to the multicast/broadcast transmission field of content-data.More particularly, the present invention relates to the technology for controlling the point-to-multipoint transmission that content is organized to user by broadcast enable (broadcast-enabled) network.
Background technology
Telephony, information receiving and program request (on-demand) Streaming Service are the examples of point-to-point (PTP) or unicast communication service.On the other hand, broadcast and multicast service then communicates based on point-to-multipoint (PTM).Use PTM communication, content (such as voice, text, figure or content of multimedia) is typically transmitted from single source to multiple destination.PTM service may be such as Streaming Service or document backup (delivery) service.
Content is sent to the user being registered to specific multicast group by multicast PTM service.Usually, multicast group comprises the interested multiple user of certain content, the news in the fields such as the such as sports of described certain content, economy, politics.
Content-data is broadcast to predetermined geographic area by the broadcast PTM service of broadcast enable network (such as mobile network).User need not register or add certain group before receiving this content.
3GPP(the 3rd generation partner program) define for GSM(global system for mobile communications) and UMTS(Universal Mobile Telecommunications System) the broadcast and multicast service of network, i.e. multimedia broadcasting and multicast service (MBMS) feature.This feature is such as recorded in 3GPPTS(technical specification) 23.246 and TS26.346 in.Multiple broadcast/multi broadcast correlation technique is added in conventional GSM or UMTS network by MBMS.In order to realize these technology, the functional entity that the broadcast/multi broadcast defining the service of control transmits, it is called 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, sets up and control MBMS delivery vehicles, and additionally can also be used to start MBMS transmission.Such as, BM-SC can provide the release of service to subscriber equipment (UE) signals multicast transmission on the horizon, and described subscriber equipment (UE) is the member of relevant group.These notices comprise such as multicast service identifier, Internet Protocol (IP) multicast address, all necessary informations in transmission time and media description and so on, and subscriber equipment needs these information to add multicast conversation.
Each broadcast/multicast service relates to coverage---geographic area or area, can broadcast or transmit described content in described coverage.This coverage can comprise MNO(Mobile Network Operator) whole PLMN(PLMN) or even comprise some PLMN, condition is reached an agreement with regard to service level agreement.On the other hand, coverage can be configured to the little single wireless area to network.Generally speaking, coverage comprises the reasonable fraction of PLMN.
The downstream of PTM data source, each node in network has a series of other downstream node, to determine which node is MBMS content should be forwarded to by it.Like this, set up the contents distribution tree of hierarchical organization, each wherein in base station transceiver/Node-B stations is single radio cells, thus forms the leaf of this distribution tree.
Multicast service requires that network understands the position of the group membership to the registration of service group.Even if MBMS transmission carrier is idle, namely do not have content delivery to carry out, be necessary the motion following the tracks of user (inner in group coverage, namely inner in the coverage of this particular group) yet.Therefore, such as, in the radio net and core network of mobile network, need complicated fabric anomaly function, can effectively set up transmission tree from the angle of Internet resources.
Broadcast service does not comprise any fabric anomaly function, thus needs the resource of much less.Such as, MBMS broadcast mode only provides simple PTM to transmit, namely described network between MBMS transmission or period do not follow the tracks of the motion of user.To the position of the interested user of this content how content is broadcast in broadcast service zone, and no matter may.This means that broadcast service zone must be configured large as much as possible, and at least for non-localized service, preferably include whole broadcast enable network, to guarantee that this content can receive for interested user.This causes the waste of resource equally, because may there is the community or the geographic area that reception are broadcasted to the interested user of content of wherein only having considerably less (or even not having).
Therefore, the PTM transmission technology that improvement is provided is necessary.
Summary of the invention
The application provides a kind of method for controlling the contents distribution of broadcasting in enable network environment, described method comprises step :-enable position information query message is to the first broadcasting transmitting in group coverage, and described group of coverage pre-defines for content distribution service;-receiving position information response message, each location information response message comprises the positional information that instruction have received the position of the subscriber equipment of described place information inquiry message;-determine content transmission area based on the location information response message received; And-prepare to carry out contents distribution via to the second broadcasting transmitting in described content transmission area and at least one in unicast retrieval.
The application also provides a kind of for controlling subscriber equipment for the method for content reception in broadcast enable network, and described method comprises step :-via the first broadcasting transmitting from described network reception place information inquiry message;-send in response to described place information inquiry message comprise positional information location information response message for the second broadcasting transmitting, described positional information indicates the position of described subscriber equipment; And-prepare to carry out content reception via at least one in the second broadcasting transmitting and unicast retrieval.
The application also provides a kind of network node, group service control component in its realization broadcast enable network environment is to control contents distribution, wherein said network node comprises :-first interface, it is suitable for enable position information query message to the first broadcasting transmitting in group coverage, and described group of coverage pre-defines for content distribution service;-the second interface, it is suitable for receiving position information response message, and each location information response message comprises the positional information that instruction have received the position of the subscriber equipment of described place information inquiry message;-processing unit, its location information response message be suitable for based on receiving determines content transmission area;-three interface, it is suitable for the second broadcasting transmitting started in described content transmission area.
The application provides again a kind of network node, group service control component in its realization broadcast enable network environment is to control contents distribution, wherein said network node comprises :-first interface, it is suitable for enable position information query message to the first broadcasting transmitting in group coverage, and described group of coverage pre-defines for content distribution service;-the second interface, it is suitable for receiving position information response message, and each location information response message comprises the positional information that instruction have received the position of the subscriber equipment of described place information inquiry message;-processing unit, its location information response message be suitable for based on receiving determines content transmission area;-four interface, it is suitable for controlling the providing of content for unicast retrieval.
The application provides again a kind of subscriber equipment, and for broadcasting the content reception in enable network, wherein said subscriber equipment comprises :-first interface, and it is suitable for via the first broadcasting transmitting from described network reception place information inquiry message;-the second interface, its be suitable for sending in response to described place information inquiry message comprise positional information location information response message for the second broadcasting transmitting, described positional information indicates the position of described subscriber equipment; And-three interface, it is suitable for receiving content via at least one in the second broadcasting transmitting and unicast retrieval.
According to first aspect of the present invention, propose the method for the contents distribution in control PTM enable network environment.The method comprising the steps of: enable position information query message, to a PTM transmission of group coverage, wherein can pre-define described group of coverage for the point-to-multipoint transmission of group data; Receiving position information response message, each location information response message comprises the positional information that instruction have received the position of the subscriber equipment (UE) of this place information inquiry message; Content transmission area is determined based on the location information response message received; And preparation transmits via the 2nd PTM to this content transmission area and/or unicast retrieval (retrieval) carries out contents distribution.
Prepare to carry out contents distribution via the 2nd PTM transmission can comprise: arrange the time that transmission session starts; The data relevant with this transmission are provided for the transmitter of the data source of described transmission, such as PTM address (such as suitable broadcast address) and required bearer resource to by serving as; And provide content-data to transmitter.Prepare to carry out contents distribution via unicast retrieval can comprise: for the point (it may be the network address of such as broadcast files reparation service) serving as the data source for unicast retrieval arranges the time (being about to process the time of corresponding request from it) activating unicast retrieval; And provide described content to data source, such as provide the position in memory space, described content is stored in this memory space.In the case of mbms, the action adopting and such as prepare broadcasting transmitting and unicast retrieval has been respectively provided in the 9.3.2 joint of the 4.4.3.1 joint of 3GPPTS23.246,4.4.3.2 joint and TS26.346.
PTM enable network may be enabled in broadcast and/or multicast transmission and/or be enabled in the network of other PTM transmission technology (such as the following PTM transmission technology that will develop).One PTM transmission and/or the 2nd PTM transmission can be such as broadcasting transmittings.
Group coverage can be geographic area.This geographic area can have any structure, such as, can comprise some subregions, and these subregions can be adjacent one another are or can be away from each other.Content transmission area can comprise one or more subregions of group coverage.
Group coverage can comprise the set of cells of described network.Such as, group coverage can comprise a PLMN(or several PLMN) all communities, or such as can comprise only single or a few community for the service relevant with specific geographic position.Content transmission area can comprise the subset of the set of cells from group coverage.The community of content transmission area can be dispersed on whole group of coverage.Group coverage and/or content transmission area can comprise an only part for community.Power control techniques and antenna beam control such as to allow the size of the fineness ratio in these regions only community also little.
Place information inquiry message can comprise positional information designator, and its instruction will be included in the type of the positional information in location information response message.Such as, the positional information of request can be the cell ID (ID) of the community at respective user equipment place.Alternatively or additionally, positional information can the geographical position of equipment for indicating user, and this geographical position such as utilizes based on GPS(global positioning system) technology or measured by network (such as positioning service that user orders).Lift another example, positional information designator can ask community ID to be prerequisite, and asks geographical position to be optional.
Place information inquiry message can comprise time started information, the time point that the time that its instruction the 2nd PTM transmission starts and subscriber equipment start unicast retrieval or wait in the period at least one.Certain digital solution such as regulation can be interpreted into the reception from place information inquiry message until the 2nd PTM transmits the time being about to, such as 20 seconds by time started information.Alternatively, can by time started information interpretation precedent as the time point according to Greenwich (Greenwich) standard time (GMT) or universal time.Lift another example, the time started, information was except comprising value, can also comprising the instruction about how explaining this value, being namely construed to the time period under GMT or time point.
Place information inquiry message can comprise address information, and its instruction is for being transferred to the address of the unicast retrieval of the data in content transmission area.UE can not receive sometimes via the 2nd PTM transmission and the content of transmission.A reason may be, subscriber equipment is arranged in group coverage instead of is arranged in content transmission area.So UE can use the unicast communication (automatically or answer the request of user) of the address provided by described address information so that from this address search content.This unicast communication can be any PTP session, such as such as FTP(file transfer protocol (FTP)) or HTTP(HTML (Hypertext Markup Language)) the PTPIP(Internet Protocol of session and so on) session.This PTP session can such as use to be had other UMTS bearer service of interactive traffic class and realizes.
Place information inquiry message can comprise operating lag information, the time delay of its instruction for sending location information response message.When many users have registered group service, many UE can respond this place information inquiry message.When all UE respond simultaneously, such as may occur congested at radio interface place in network.Therefore, advantageously the response time of UE has dispersion.Operating lag information can specify the value in the time interval be construed to after receiving position information query messages, such as 5 seconds.Each UE can respond in this predetermined time interval on random time point, such as, responded after 1.1 or 3.7 seconds.Additionally or alternatively, operating lag information can indicate the response time the earliest, or regular time only can be provided to postpone to all UE of group.Such as, the service of two groups can provide relevant content (as the news of plain text, and as multimedia news, but comprising the content of text of first service).So it is different that operating lag information can be selected to for these two services.Certainly, operating lag information can comprise the combination of foregoing.
Described method can comprise other step: use such as file repair service to be provided for the content-data of unicast retrieval.3GPPMBMS provides the file repair service as specified in TS26.346.This service can be reused for technology in this paper.When UE is not arranged in content transmission area, this UE can use this known file repair service to come via unicast communication retrieval of content.
Content transmission area can be determined to be the geographic area of the network at the user equipment project place comprising at least scheduled volume.The amount of user equipment project can be defined as percent value, user density value or absolute value.Such as, the radio plot organizing coverage can be determined to be and belong to content transmission area, if the single UE response position information query message in this community.But this threshold value also can be configured to larger number of users.Such as, may be required of, five users make response from community or cell set, so that this community or cell set become a part for described content transmission area.The user that can not receive the 2nd PTM transmission according to this algorithm has an opportunity to receive described content via unicast communication.
Determine that the step of content transmission area can comprise the position of prediction user equipment project between the 2nd PTM transmission period.Location information response message allows to determine the approximate place of mobile terminal or the snapshot of position when receiving place information inquiry message.Its position of this time point when motion of user (determined by known other technologies itself) can be used for predicting when the 2nd PTM transmits and/or when transmission stopping.Additionally or alternatively, this prediction can use other such as relevant with described community itself data.Described community such as can comprise the geographic area along highway or railway.If UE makes response in this community, so just will can move along this highway or railway with this UE of certain probabilistic forecasting.
Described prediction can be used for the determination of optimization content transmission area, makes it be included in the geographic area of the network at the user equipment project place of at least scheduled volume between the 2nd PTM transmission period.Such as, between the 2nd PTM transmission period, one or more communities (according to described prediction) at UE place may be included in content transmission area.
For the UE of the user of static or slow motion (such as pedestrian), optimization may be unnecessary, because their position substantially will not change during PTM process.On the other hand, the position of the user in the moving vehicle of any type may promptly change.Optimization will be favourable in this case, to predict the motion of these users.When MPS process motorway or railroad track, next community along highway/track can be comprised in the determination of hot spot region.
Described method can comprise other step: determine and at least one the relevant identity information in the user of respective user equipment and respective user equipment according at least one in location information response message.Such as, can for management object determine IMSI(International Mobile Subscriber identity), TMSI(Temporary Mobile Subscriber identity) and/or IMEI(International Mobile Equipment Identity).Such as, interestingly may detect that the user that have subscribed group service is whether or how actual continually uses this service, or detect him or she and prefer which content.Alternatively, the statistic (such as to determine size that user organizes etc.) of response message can be collected.
Under current context, group service can such as by use first broadcast service will prepare the second broadcasting transmitting to be used for accordingly to send realization dividing of actual content in place information inquiry transmission of messages to group coverage.Therefore, broadcasting transmitting is used for realizing being similar to the service of multicast service.Such as, may need to be registered to this service.Registration corresponding to the UE of place information inquiry message can be checked before considering the positional information received in from the location information response message of this UE.If this UE is not registered, so its response message can not be received, if or have received, then abandon.
According to another aspect of the present invention, propose for controlling subscriber equipment to receive the method for the content in PTM enable network.The method comprising the steps of: via PTM transmission receiving position information query messages from this network; Send in response to this place information inquiry message the location information response message comprising positional information to transmit for the 2nd PTM, the position of described positional information equipment for indicating user; And prepare to carry out content reception via at least one in the 2nd PTM transmission and unicast retrieval.
The method can also comprise step: receive described content via the 2nd PTM transmission.Additionally or alternatively, this content can receive via unicast retrieval.If such as all or part of duration of the 2nd PTM transmission, UE is not in the content transmission area that described network is determined, so like this situation may be exactly.UE can not receive the some or all of of described content also may exist other reason, such as, about technical failure or the unfavorable situation of radio interface.
Positional information can comprise the community ID of the community of the network at subscriber equipment place.Additionally or alternatively, positional information can comprise the geographical position of subscriber equipment.
In another step, unicast retrieval timer can be set in a user device.This is arranged and can be triggered by receiving position information query messages or any suitable event.
The timer value of unicast retrieval timer can be determined based on the time started information be included in place information inquiry message.Time started information can indicate the time point of unicast retrieval or wait for the period, or instruction PTM transmits the time started.Such as, if time started information indicates started the 2nd PTM transmission in 20 seconds, so described set timer can be become value larger a little, such as 30 seconds.
When transmitting not reception group data via PTM, content-data can be retrieved via unicast retrieval after unicast retrieval timer expires.Some the possible reasons not reaching and carry out contents distribution via PTM transmission are outlined above.
Can the step of delayed delivery location information response message randomly.Such as, operating lag information may be have received in positional information query messages.Alternatively, when clearly not indicating in positional information query messages, random delay can be set by UE.This can such as specific to network by being configured to the random delay be in predetermined time interval.
According to another aspect of the present invention, propose the computer program comprising program code sections, described program code sections is for performing any one step in methods described herein when this computer program operates on one or more computing equipment.This computer program can store on a computer readable recording medium.
According to another aspect of the present invention, propose network node, it realizes group service control component in PTM enable network to control contents distribution.This network node comprises: first interface, and it is suitable for the PTM transmission of enable position information query message to group coverage; Second interface, it is suitable for receiving position information response message, and each location information response message comprises the positional information that instruction have received the position of the subscriber equipment of this place information inquiry message; Processing unit, its location information response message be suitable for based on receiving determines content transmission area; And the 3rd interface, it is suitable for the 2nd PTM transmission starting to content transmission area.
According to another aspect of the present invention, propose another kind of network node, it realizes group service control component in PTM enable network environment to control contents distribution.This network node comprises: first interface, and it is suitable for the PTM transmission of enable position information query message to group coverage; Second interface, it is suitable for receiving position information response message, and each location information response message comprises the positional information that instruction have received the position of the subscriber equipment of this place information inquiry message; Processing unit, its location information response message be suitable for based on receiving determines content transmission area; And the 4th interface, it is suitable for controlling the providing of content for unicast retrieval.
This network node can also comprise the 5th interface, this interface be suitable for using such as according to the file repair service of 3GPPTS26.346 to be provided for the group data of unicast retrieval.5th interface can be identical with the 4th interface of the network summarized above.
According to another aspect of the present invention, propose subscriber equipment, it is suitable for the content reception in PTM enable network.This subscriber equipment comprises: first interface, and it is suitable for via PTM transmission receiving position information query messages from described network; And second interface, it is suitable for sending in response to this place information inquiry message the location information response message comprising positional information and controls for contents distribution, the position of described positional information equipment for indicating user.Alternatively, can provide the 3rd interface, it is suitable for receiving content via in the 2nd PTM transmission and unicast retrieval.
Subscriber equipment according to above-mentioned implementation of the present invention can also comprise the processor realizing unicast retrieval timer.This processor can be suitable for arranging described unicast retrieval timer.Described setting can be triggered by the reception of place information inquiry message.
Accompanying drawing explanation
Hereinafter, the exemplary embodiment with reference to the accompanying drawings further describes the present invention, in the accompanying drawings:
Fig. 1 is the schematic diagram of the embodiment of PLMN;
Fig. 2 is the block diagram of the functional part that network node embodiment and subscriber equipment embodiment are described;
Fig. 3 is the flow chart of the first embodiment of the method illustrated for controlling the contents distribution of broadcasting in enable network environment;
Fig. 4 is the flow chart of the second embodiment of the method illustrated for controlling the contents distribution of broadcasting in enable network environment;
Fig. 5 is the flow chart illustrated for controlling to receive from broadcast enable network in a user device the first embodiment of the method for content;
Fig. 6 is the flow chart illustrated for controlling to receive from broadcast enable network in a user device the second embodiment of the method for content;
Fig. 7 is the flow chart illustrated for controlling to receive from broadcast enable network in a user device the third method embodiment of content;
Fig. 8 is the Message sequence charts of the contents distribution illustrated in broadcast enable network environment.
Embodiment
In the following description, for purposes of explanation and not limitation, set forth specific details, such as, comprise the particular network topological structure, communication protocol etc. of particular network node, to provide for thorough understanding of the present invention.It will be appreciated by those skilled in the art that the present invention can realize in other embodiments departing from these specific detail.Such as, one skilled in the art will appreciate that the present invention can utilize PTM service, multicast/broadcast mechanism or other PTM communication features of being different from 3GPPMBMS standard to realize, these features are discussed below the present invention to be described.In addition, realize in any network that the present invention can be attachable to removable user.Such as, except mobile network, the present invention additionally or alternatively may be used on WLAN, bluetooth, DVB or similar wireless network, but also can be applied to Wireline (wireline) network, such as, have the Intranet of the company of some perhaps how independent subsidiaries.
Those skilled in the art it is to be further understood that the function of following explanation can use independent hardware circuit, use combine microprocessor or all-purpose computer through programming and work software, use application-specific integrated circuit (ASIC) (ASIC) and/or use one or more digital signal processor (DSP) to realize.It is to be further understood that, when the present invention is described as a kind of method, it also can realize in computer processor and the memory being coupled to processor, and wherein this memory coding has one or more program, and described program realizes method disclosed herein when being performed by processor.
Although exemplary embodiment described below is based on broadcast enable network and PTM transmission is broadcasting transmitting, but those skilled in the art are to be understood that, also other PTM transmission technologys can be used, such as, based on the PTM technology of multicast transmission or other PTM technology of following exploitation.
Term used herein " interface " comprises " functional interface ".Functional interface refers to the minor structure being included in functional part or structure (hardware and/or software part or functional entity), object and being with other external components or structured communication.Such as, if functional interface is software part for it provides the structure of connection function, so this functional interface can be software simulating purely.
With reference to Fig. 1, which schematically illustrate an embodiment of broadcast enable network or PLMN150.PLMN150 spreads all over geographic area 152.This region 152 can comprise a state or some states, and can comprise rural area and urban area (not shown).PLMN150 also can comprise the region in a state or some states, or can comprise the only part in a state.
Group coverage 154 is limited in PLMN150.Coverage 154 covers the reasonable fraction of PLMN150, but group coverage can limit for whole PLMN or only for the very little part of PLMN usually.Group coverage 154 is illustrated as the region of single simple shape.But group coverage generally can comprise some geographic sub-areas, and these subregions may be separated from one another.Group coverage can also have hole, and namely it can surround the region of broadcast enable network, and the group service being wherein assigned with group coverage is not provided.
For specific contents distribution, PLMN150 may have advertised place information inquiry message in the first broadcasting transmitting in group coverage 154.Location information response message is not shown from some UE() receive.Based on these response messages, network 150 determines content transmission area.This region comprises the geographic area of user density on predetermined threshold, such as wireless area (clearly not illustrating).For example, at least five users may must be positioned at wireless area (or being cell set when soft combination) inside, this wireless area (or cell set) to be included in content transmission area.Described threshold value can be configured to make content-data to be efficient higher than the broadcasting transmitting in the region (i.e. " hot spot region ") of this threshold value compared with multiple unicast communication to user density in the utilization of resources.
In this exemplary embodiment shown in Fig. 1, content transmission area comprises the subregion 156,157 and 158 of group coverage 154.Such as, subregion 156 can cover city, and less subregion 157 overlaps with rural area, and subregion 158 can comprise the wireless area along connecting city and the extension of rural highway.
The second broadcasting transmitting for distributing contents will only carry out in subregion 156,157 and 158.User that is outside these regions or that lack technical capability will have to via unicast retrieval to receive content.
Fig. 2 schematically shows the functional part of network node 200 embodiment and subscriber equipment 204 embodiment, group service control component in described network node 200 realization broadcast enable network 202 is to control contents distribution, and described subscriber equipment 204 is suitable for receiving content from network 202.
In the present embodiment, network 202 is mobile networks, such as UMTS network.Network 202 can be such as the PLMN150 of Fig. 1.The group service control component that node 200 realizes can be a part of BM-SC or BM-SC of UMTS network 202.Network node 200 comprises first interface 206, its be suitable for enable position information query message to group coverage 154(see Fig. 1) the first broadcasting transmitting, wherein this message can be received by UE204.Node 200 also comprise be suitable for such as not shown from UE204 and many similar UE() the second interface 208 of receiving position information response message.Utilize location information response message, UE204 back reports the positional information of the position of equipment for indicating user 204.
Network node 200 also comprises the processing unit 210 being suitable for determining content transmission area 156,157,158 based on the location information response message received.3rd interface 212 is suitable for starting to the second broadcasting transmitting in content transmission area 156,157,158, and UE204 may be positioned at or may not be positioned at described content transmission area.Second broadcasting transmitting comprises the content of such as a file or multiple file or stream data and so on.
4th interface 214 of network node 200 is suitable for such as controlling when UE204 is not included in described content transmission area the providing of content for unicast retrieval, and thus must carry out retrieval of content via unicast communication.Interface 214 can such as with content-data sources traffic such as, so that time of providing of instruction content and indicate search argument possibly, the maximum bandwidth of each user.
4th interface 214 is suitable for using and such as controls the providing of content for unicast retrieval according to the file repair service of 3GPPTS26.346.Additionally or alternatively, this interface is also suitable for providing to control content according to other mechanism.
Message and data are transmitted via the network 216 in Fig. 2.Network 216 can be a part for broadcast enable network 202.Such as, network 216 can comprise the core network of mobile network 202 and the part of radio access network.In order to broadcast position information query messages and content-data, follow distribution tree through network 216 to UE204 and the community at other UE places from content-data source (not shown).Content-data source need not and usually not identical with BM-SC200, but will the network address of himself be had.
Subscriber equipment 204(such as mobile phone) comprise the first interface 218 be suitable for via the first broadcasting transmitting receiving position information query messages from network node 200.Second interface 220 is suitable for the location information response message sending the positional information comprising equipment for indicating user 204 position in response to this place information inquiry message.This positional information it is expected to for the second broadcasting transmitting.
3rd interface 222 is suitable for receiving content.Receive during the second broadcasting transmitting that this content can start at the interface 212 by BM-SC200.Alternatively, this content can receive via unicast communication, and the providing of content-data wherein for unicast retrieval is controlled by the interface 214 of network node 200.In principle, such as, when the content-data be broadcasted is such as destroyed due to transmission fault, also can receive this content-data via the second broadcasting transmitting and additionally via unicast communication.
Subscriber equipment 204 comprises the processor 224 realizing unicast retrieval timer.Processor 224 is suitable for arranging unicast retrieval timer.The described reception being arranged through place information inquiry message triggers.
Show the independent step of the first embodiment of the method with reference to Fig. 3, flow process Figure 100, this first embodiment of the method broadcasts the contents distribution in enable network environment (PLMN150 of such as Fig. 1) for controlling.
In a step 102, enable position information query message or " hotspot query message " are to the first broadcasting transmitting organizing coverage (such as in the group coverage 154 of Fig. 1).For described service pre-defined group coverage.By hotspot query information broadcast (such as using MBMS broadcast mode) in whole group of coverage 154.
At step 104, receiving position information response message.Each location information response message comprises the positional information that instruction have received the position of the subscriber equipment of this place information inquiry message.
In step 106, content transmission area 156,157,158 is determined based on the location information response message received.This step can comprise the sub-step waiting for that these response messages arrive.Stand-by period can at hundreds of millisecond in the scope of several seconds.Then, the response message received in wait interval is assessed about the positional information comprised.Correspondingly, hot spot region 156,157,158 can be determined.
In step 108, the second broadcasting transmitting of content delivery or hot spot region 156,157,158 is started to.In another step 109, can collect and receive response, described reception replys transmission from the UE confirming to receive described content.Step 109 can be necessary or can be optional step.
Show the independent step of the second embodiment of the method with reference to Fig. 4, flow process Figure 120, this second embodiment of the method broadcasts the contents distribution in enable network environment for controlling.This second embodiment of the method can combine with the first embodiment of the method described above with reference to Fig. 3.
In step 122, enable position information query message is to the first broadcasting transmitting of group coverage.For the point-to-multipoint transmission pre-defined group coverage of described content.In step 124, receiving position information response message.Each location information response message comprises the positional information that instruction have received the position of the subscriber equipment of this place information inquiry message.
In step 126, content transmission area is determined based on the location information response message received.In step 128, described content is provided to carry out unicast retrieval.
Show the independent step of the first embodiment of the method with reference to Fig. 5, flow process Figure 130, this first embodiment of the method is used for controlling from broadcast enable network, to receive content in a user device.
In step 132, via the first broadcasting transmitting receiving position information query messages from described network.In step 134, in response to this place information inquiry message, transmission comprises the location information response message of positional information for the second broadcasting transmitting, and described positional information indicates the position of subscriber equipment.
Show the independent step of the second embodiment of the method with reference to Fig. 6, flow process Figure 140, this second embodiment of the method is for controlling the content reception in subscriber equipment.
In step 142, via the first broadcasting transmitting receiving position information query messages from described network.In step 144, in response to this place information inquiry message, send the location information response message comprising positional information, described positional information indicates the position of subscriber equipment.In step 146, receive described content.
Fig. 7 is the flow process Figure 160 of the independent step showing third method embodiment, and this third method embodiment is used for controlling from broadcast enable network, to receive content in a user device.
In step 162, subscriber equipment (or client) registration group service.In the example shown in Fig. 7, group service can be file distributing (transmission) service.One or more files of distribution can comprise physical culture sports events or any other content.This registration is the precondition becoming group membership.
File distribution service pushes (push) service, and wherein one or more file push is entered UE(such as mobile phone by service provider) in memory.File distribution service is normally event-oriented.Such as, push about this video clipping of finally scoring in the phone memory of all registered users immediately after the final goal (goal) of match occurs.
In step 164, as the preparation of contents distribution, receiving position information query messages (here also referred to as hotspot query message/file).In step 166, in response to this query messages, subscriber equipment prepares and sends the location information response message comprising the ID of the community at the temporary transient place of described UE.Triggered by the reception of this query messages, also start unicast retrieval timer.
In step 168, UE waits for that the broadcasting transmitting of described content starts.Receiving the situation 170 times (this UE is inner in content transmission area) of broadcasting transmitting, in step 172, receive the file that will transmit via broadcasting transmitting.MBMS broadcasting process has carried out detailed regulation in 3GPPTS23.246, thus will not be further described here.In step, once successfully receive the file of transmission, then unicast retrieval timer is stopped.In step 176, download specification according to MBMS to be further processed.Such as, the reception reporting process according to 9.4 joints in TS26.346 can be performed.The method terminates in step 178.
When described UE not in inside, content transmission area, wait for that the step 168 that starts of broadcasting transmitting will continue, until unicast retrieval timer is expired in step 180.Due to timer expiration, will via unicast communication retrieving files in step 182, namely file transfers session will be carried out via exchange channels.Unicast address may be known for the UE from registration and/or may provide in hotspot query message.This UE may postpone the beginning of unicast communication randomly to prevent the overload in content-data source place or described network (wave point).In step 178, the method branch terminates after the successful unicast retrieval of content file.
Fig. 8 shows the Message sequence charts (call flow) of another embodiment of the content delivery in broadcast enable network environment.A UE310 and the 2nd UE312 is related in this message sequence.In addition, the GGSN(Gateway GPRS Support Node of broadcast enable network is depicted) 314.This network also comprises the BM-SC315 comprising three functional parts 316,318,320, and these functional parts are regarded as independent unit in fig. 8 for purposes of illustration.Generally speaking, the parts of BM-SC315 can realize or can realize on some independent hardware cells on single hardware cell.
Reference numeral 316 represents for starting and the BM transmitter of control MBMS broadcasting transmitting session.Reference numeral 318 represents the functional part be used for from the known file repair service of 9.3 joints of 3GPPTS26.346.The feedback capture device 320 receiving position information response message of BM-SC315 and determine content transmission area based on the location information response message received.Although be the part of BM-SC315, some or part in subdivision 316,318,320 can have they self the network address, such as can direct addressin feedback capture device 320.
Reference numeral 1)-9) represent according to the basic step of PTM content delivery process embodiment illustrated in fig. 8.In step 1), one or more file for considered group service be ready to distribution.Therefore, BM transmitter 316 starts MBMS broadcast session by the MBMS session start process specified in TS23.246.In this respect, GGSN314 providing for MBMS bearer resource is triggered.
After bearer setup, in step 2) in use about MBMS bearer service Transport FLUTE protocol (in this respect see TS26.346 7 joint) by IP-UDP-ALC(IP Internet Protocol, udp user datagram protocol, ALC asynchronous layered coding) transmit hotspot query message (place information inquiry message).By this hotspot query information broadcast (using MBMS broadcast mode) to whole group of coverage.
MBMS region is configured to the group coverage of described group of service.Therefore, for the service of this MBMS group, hotspot query message is transferred in whole group of coverage.
The cell identifier (ID) of hotspot query information query group membership.It is also to URI(Uniform Resource Identifier) announcement files transmits the unicast retrieval of session, namely comprises the address of feedback capture device 320.
In addition, time started information can be tied to described URI, and provide described hotspot query message to it.How long this time started information instruction UE310,312 should wait for broadcasting transmitting.Such as, the value of 20 seconds can be indicated.
In addition, described hotspot query message can comprise response time to protect up link and server in order to avoid be subject to the impact of overload and congestion condition.Each UE should postpone described response randomly within the time interval of operating lag information instruction.
After in described hotspot query transmission of messages to group coverage, in step 3), BM transmitter 316 is dismantled MBMS carrier.
In step 4), once receive described hotspot query message, so UE310,312 just responds and sends by the address of the feedback capture device 320 indicated in this hotspot query message the position that location information response message reports them.The position reported may comprise the community ID of the community of instruction group coverage, in step 2) described in hotspot query message distribution within it.Additionally or alternatively, other positional information can be sent, such as geographical position.
Use known IP-TCP-HTTP protocol stack (tcp transmission control protocol, http hypertext transfer protocol) send UE310,312 and to have have received the other UE(of this hotspot query message not shown) location information response message.Because described hotspot query message contains instruction for sending the operating lag information of the time delay of described location information response message, thus the response message of different UEs will be postponed randomly.Schematically illustrate this point in Fig. 8, wherein UE310 postpones its response than UE312 with larger amount.In this way, the uplink overload caused because all response UE send response message is simultaneously avoided.
In step 5), feedback capture device 320 is used as the interface unit of BM-SC315, and receives UE310,312(and many other UE) location information response message.Feedback capture device 320 is also used for determining content transmission area based on the location information response message received.Such as, this content transmission area can comprise all communities, and therefrom at least five UE have responded described hotspot query message.In addition, feedback capture device 320 can consider these UE moving along highway and railway track, until the time durations of the actual beginning of described content delivery and this transmission.Suitable community can be included in this content transmission area.Described feedback capture device can also be described content delivery determination broadcast distribution tree.
What described feedback capture device comprised one or more hot spot region to BM transmitter 316 report is determined that content transmission area and broadcast distribution are set.In step 6), new MBMS broadcast bearer set up by BM transmitter 316.This carrier can be any legacy interactive/streaming carrier being suitable for described content delivery usually.This carrier is set up towards the community of described content transmission area, and the focus namely determined towards feedback capture device 320 is set up.In step 7), use Flute process will to expect that the file transfers being used for distributing is in described content transmission area by IP-TCP.In step 8), when BM transmitter 316 releases MBMS carrier, this file transfers conversation end.
During step 7), UE310 is only had to receive the content of expection for distributing.On the other hand, UE312 is positioned at outside described content transmission area, namely outside focus.UE312 may unique UE in Shi Qi community, its response hotspot query message, and thus this community is specified to not be the part of described content transmission area by feedback capture device 320.Therefore, UE312 must retrieve described content via unicast communication.In step 9), the clean culture URI that UE312 uses HTTP-TCP to provide from hotspot query message fetches content.For this purpose, the known MBMS file repair service realized in using function parts 318.Such as, UE312 can start HTTP retrieving in 30 seconds after receiving hotspot query message.According to the time started information comprised in hotspot query message, UE312 just should have received MBMS broadcasting transmitting in about 20 seconds after receiving this hotspot query message.
Be apparent that as become according to above embodiment, the expense of the pure multicast transmission comprising complicated fabric anomaly function can be avoided, improve the efficiency of contents distribution compared with pure broadcasting transmitting, described pure broadcasting transmitting comprises content delivery to having potential low user density or even not having in the region of user simultaneously.
Compared with known broadcast/multicast service, by suitably configuring PTM service as mentioned above, the operator of PLMN can minimize the use of Internet resources.Such as, operator can be that the Minimum Area that will be included in content transmission area selects suitable size according to network of network topological structure, or operator can be user density configured threshold, so that service registry is to the user of group best, and do not cause the excessive waste of Internet resources.
These technology can be implemented advantageously in such as broadcast enable network broadcast feature on.In addition, in one implementation, new data need not be processed in a user device; The UE of any operation knows its position, at least the ID of its community, place of its Internet access.
Generally speaking, the technology proposed allows to provide " multicast shape " to serve, and really need not realize the whole feature framework of known multicast service.
Although describe the present invention in conjunction with the preferred embodiments of the present invention, should be appreciated that this description only for illustration of non-limiting object.The present invention should only be limited by claim appended here.
Claims (23)
1., for controlling a method for the contents distribution of broadcasting in enable network (150), described method comprises step:
-enable position information query message is to the first broadcasting transmitting in group coverage (154), and described group of coverage pre-defines for content distribution service;
-receiving position information response message, each location information response message comprises the positional information that instruction have received the position of the subscriber equipment (204,310,312) of described place information inquiry message;
-determine content transmission area (156,157,158) based on the location information response message received, wherein said content transmission area comprises the geographic area of density on predetermined threshold of subscriber equipment; And
-prepare to carry out contents distribution via to the second broadcasting transmitting in described content transmission area and at least one in unicast retrieval.
2. according to the method for claim 1,
Wherein said group of coverage is geographic area, and described content transmission area comprises the subregion in described group of coverage.
3. according to the method for claim 2,
Wherein said group of coverage is the set of cells of described network and described content transmission area comprises the subset of the set of cells from described group of coverage.
4. according to any one method in claim 1-3,
Wherein said place information inquiry message comprises positional information designator, and described designator instruction will be included in the type of the positional information in described location information response message.
5. according to any one method in claim 1-3,
Wherein said place information inquiry message comprises time started information, the time point that the time that described time started information indicates the second broadcasting transmitting to start and described subscriber equipment start unicast retrieval or wait in the period at least one.
6. according to any one method in claim 1-3,
Wherein said place information inquiry message comprises address information, and described address information instruction is for being transferred to the address of the unicast retrieval of the data in described content transmission area.
7. according to any one method in claim 1-3,
Wherein said place information inquiry message comprises operating lag information, the time delay of described operating lag information instruction for sending described location information response message.
8. according to any one method in claim 1-3,
Comprise step: use file repair service to be provided for the content of unicast retrieval.
9. according to any one method in claim 1-3,
Wherein said content transmission area is determined to be the geographic area at the user equipment project place comprising at least scheduled volume in described network.
10. according to any one method in claim 1-3,
Wherein determine that the step of described content transmission area comprises prediction position of user equipment project during the second broadcasting transmitting, and wherein described content transmission area is specified to comprise according to described prediction geographic area at least user equipment project place of scheduled volume in described network during the second broadcasting transmitting.
11. according to any one method in claim 1-3,
Comprise other step: determine and at least one the relevant identity information in the user of respective user equipment and respective user equipment according at least one in described location information response message.
12. 1 kinds for controlling subscriber equipment (204) for the method for content reception in broadcast enable network, described method comprises step:
-via the first broadcasting transmitting from described network reception place information inquiry message;
-send location information response message for determining content transmission area in the predefined group of coverage for content distribution service in response to described place information inquiry message, described location information response message comprises the positional information of the position indicating described subscriber equipment, and wherein said content transmission area comprises the geographic area of density on predetermined threshold of subscriber equipment; And
-prepare to carry out content reception via at least one in second broadcasting transmitting and unicast retrieval of described content transmission area.
13. according to the method for claim 12,
Also comprise step: receive described content via the second broadcasting transmitting.
14. according to the method for claim 12 or 13,
Also comprise step: via unicast retrieval to receive described content.
15. according to the method for claim 12 or 13,
Wherein said positional information comprises at least one in the cell ID of the community at subscriber equipment place described in described network and the geographical position of described subscriber equipment.
16. according to the method for claim 12 or 13,
Also comprise step: unicast retrieval timer is set.
17. according to the method for claim 16,
The timer value of wherein said unicast retrieval timer is determined based on the time started information be included in described place information inquiry message.
18. according to the method for claim 16,
Also be included in when not having or described content can not be received via broadcasting transmitting, after described unicast retrieval timer expires, retrieve described content via clean culture.
19. according to the method for claim 12 or 13,
The step wherein sending described location information response message is postponed randomly.
20. 1 kinds of network nodes (200), the group service control component in its realization broadcast enable network environment is to control contents distribution, and wherein said network node comprises:
-first interface (206), it is suitable for enable position information query message to the first broadcasting transmitting in group coverage, and described group of coverage pre-defines for content distribution service;
-the second interface (208), it is suitable for receiving position information response message, and each location information response message comprises the positional information that instruction have received the position of the subscriber equipment of described place information inquiry message;
-processing unit (210), its location information response message be suitable for based on receiving determines content transmission area, and wherein said content transmission area comprises the geographic area of density on predetermined threshold of subscriber equipment;
-three interface (212), it is suitable for the second broadcasting transmitting started in described content transmission area.
21. 1 kinds of network nodes (200), the group service control component in its realization broadcast enable network environment is to control contents distribution, and wherein said network node comprises:
-first interface (206), it is suitable for enable position information query message to the first broadcasting transmitting in group coverage, and described group of coverage pre-defines for content distribution service;
-the second interface (208), it is suitable for receiving position information response message, and each location information response message comprises the positional information that instruction have received the position of the subscriber equipment of described place information inquiry message;
-processing unit (210), its location information response message be suitable for based on receiving determines content transmission area, and wherein said content transmission area comprises the geographic area of density on predetermined threshold of subscriber equipment;
-four interface (214), it is suitable for controlling the providing of content for unicast retrieval.
22. 1 kinds of subscriber equipmenies (204), for broadcasting the content reception in enable network, wherein said subscriber equipment comprises:
-first interface (218), it is suitable for via the first broadcasting transmitting from described network reception place information inquiry message;
-the second interface (220); it is suitable in response to described place information inquiry message and sends location information response message for determining content transmission area in the predefined group of coverage for content distribution service; described location information response message comprises the positional information of the position indicating described subscriber equipment, and wherein said content transmission area comprises the geographic area of density on predetermined threshold of subscriber equipment; And
-three interface (222), it is suitable for receiving content via at least one in second broadcasting transmitting and unicast retrieval of described content transmission area.
The subscriber equipment of 23. claims 22,
Also comprise and realize unicast retrieval timer and the processor (224) being suitable for arranging described unicast retrieval timer.
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