CN1768510A - Scalable quality broadcast service in a mobile wireless communication network - Google Patents

Abstract

The quality of a broadcast stream is varied responsive to changes in the utilization of forward link air interface resources. The network monitors utilization of forward link air interface resources and dynamically changes the forward link air interface resources dedicated to the broadcast stream responsive to changes in the utilization of forward link air interface resources. The quality of the broadcast stream is scaled to the allocated forward link resources. The broadcast stream may include a layered content and scaling can be achieved by varying the number of layers transmitted over the air interface. The network may notify mobile stations in advance when changes in the quality of the broadcast will take place. When the broadcast stream originates with a mobile station, the forward link air interface resources may be limited by the quality of the broadcast stream transmitted over a reverse link channel from the originating mobile station.

Description

Scalable quality broadcast service in the mobile radio communication network

Background of invention

Along with the introducing of the third generation (3G) cordless communication network, it is possible at present video traffic being sent to the mobile subscriber.Proved that video is the effective media that is used for amusement and education and communicates by letter.The video traffic that transmits on cordless communication network will greatly enrich mobile subscriber's communication capacity, and will open the new market opportunity for content supplier.No matter the mobile subscriber where, and multimedia and video stream traffic all will allow content supplier to transmit video to the mobile subscriber.For example, wait for that in Airport lounges the mobile subscriber of airliner can receive the Live Program broadcasting of for example sports tournament, news or other program, rather than obtain update by the text based business simply.In addition, the mobile subscriber will have the right to use video request program (VOD) program.Video conference will be another business of strengthening mobile subscriber's communication capacity.

Because video transmission consumes sizable air-interface capacity, therefore in the contention that may take place during the peak period between voice user and the media user to available air interface resources.The service provider needs some flexibilities aspect the needing of balance voice user and media user.A kind of solution is the air interface resource that is respectively voice user and media user distribution fixed amount.Yet on the viewpoint of spectrum utilization, the fixed allocation efficient of resource is low.If voice user's quantity is few, the resource of then distributing to the voice user will be not fully utilized.When voice user's quantity after a little while, can be by realize the increase of power system capacity for the untapped resource of media user dynamic assignment.When surpassing the available resources that this business is provided, the aggregate demand of voice user and media user still may go wrong.During the network congestion cycle, admission control algorithm will stop some users to receive business.The service provider can be to some user's imposition of surcharge usefulness, so that these users have preferential right to enjoyment during peak period.Yet, some unsatisfied users will always be arranged.

Summary of the invention

The invention provides and a kind ofly come in mobile radio communication network dynamic reallocation air interface resource and regulate the method and system of (scale) broadcasting current mass according to the resource that is specifically designed to broadcasting stream in response to changes in demand.Can use the various technology that are used to adjust the broadcasting current mass.In a preferred embodiment of the invention, the hierarchical coding algorithm is used for coming in response to the demand that changes the quality of adaptive broadcasting stream in conjunction with the Delamination Transmission scheme.The content of each broadcasting stream can comprise video, audio frequency or other content of multimedia, it is encoded as a plurality of layers, these a plurality of layers comprise basic layer and one or more enhancement layer, and wherein one or more enhancement layers can combinedly successively provide qualitative progressive improvement.Basic layer comprises the data of the most important characteristics of representing video.Other enhancement layer comprises the data of progressive improvement video.The change that this network has in response to resource utilization optionally changes the ability of broadcasting the number of plies in the stream and optionally changing the broadcasting current mass on each aspect in the network thus.Reduce the bandwidth needs that the number of plies of broadcasting in the stream has reduced this stream, support this broadcasting to flow needed air interface resource to reduce.

In another aspect of this invention, when changing the quality of broadcasting stream, this network provides clear and definite notice to mobile radio station, to avoid service disconnection and to be implemented in level and smooth transformation between the variation.This network can send message to mobile radio station, and indication is broadcasted the quality of stream and/or is used for transmitting the variation of the resource of this broadcasting stream.This message can comprise parameter operate time of indicating the time that described change comes into force in advance.

The accompanying drawing summary

Fig. 1 is the block diagram of the functional entity in the typical mobile radio communication network of diagram;

Fig. 2 is the schematic diagram of diagram video flowing session;

Fig. 3 is the schematic diagram of diagram video conference session;

Fig. 4 is the block diagram that diagram is used for the functional entity of dynamic adjustments media stream quality.

Detailed Description Of The Invention

Fig. 1 diagram is used for providing to the mobile subscriber typical wireless network 10 of broadcast/multi broadcast business (BCMCS).Wireless network 10 can be the wireless network of any kind, for example cdma network, WCDMA network, GSM/GPRS network, EDGE network or UMTS network.Fig. 1 illustrates the network 10 according to the cdma2000 standard configuration.Wireless network 10 comprises core network 20 and wireless access network (RAN) 30.Core network 20 is connected to one or more external networks, for example the Internet or other cordless communication network.RAN30 is connected to core network 20, and is used as the access point of mobile radio station 100.

Core network 20 comprises packet data serving node (PDSN) 21, broadcast service node (BSN) 22, BCMCS controller 23, BCMCS content server (BCMCS-CS) 24 and AAA server (AAA) 26.PDSN21 is connected to outside Packet Data Network (PDN), the Internet for example, and support the PPP that goes to from mobile radio station to be connected.Its increases and deletion is gone to and from the IP stream of RAN30, and routing packets between data network and the RAN30 externally.BSN22 is connected to BCMCS-CS24, and supports to go to and from the BCMCS stream of mobile radio station.Its increases and deletion is gone to and from the BCMCS stream of RAN30.As described below, for bit-rate adaptation, BSN is treatments B CMCS stream also.If wish that the function of BSN22 can be incorporated into PDSN21.BCMCS controller 23 is in charge of and provides the BCMCS session information to BSN22, BCMCS-CS24, RAN30 and mobile radio station 100.BCMCS-CS24 is the logic entity that the BCMCS content can be used by mobile radio station.BCMCS-CS24 is the source of this content not necessarily, but can content supplier from the outside receive this content.In the home network of mobile radio station or in the outside PDN such as the Internet, content supplier 50 can be the server of service network inside.It can store and transmit the content from content supplier, maybe can merge the content from a plurality of content suppliers.If used encryption, then BCMCS-CS24 can encrypt this stream content.AAA26 is responsible for the authentication function.Its calling party profiles database (not shown) obtaining information from user's reservation profile, and can send this user to BCMCS-CS24 and preengages profile.

RAN30 comprises Packet Control Function (PCF) 32, base station controller 32 and one or more wireless base station (RBS) 36.The basic function of PCF32 is to set up, keep and be terminated to the connection of PDSN21.BSC34 is controlled at the Radio Resource in their corresponding fields.BSC34 can manage several RBS36.RBS36 is provided for the air interface of communicating by letter with the mobile subscriber.Be entitled as in " CDMA high-speed broadcast-multicast packet data air interface standard (CDMA High Rate broadcast-MulticastPacket Data Air Interface Specification); version 10 (in February, 2004) (BCMCS air interface specification) " in third generation collaborative project 2 (3GPP2) standard acceptance of the bid and described the typical air interface specification that is used to provide the BCMCS business, its content at this by incorporated.

The BCMCS business provides to a plurality of users and sends the identical information stream ability of (being called BCMCS stream here) simultaneously.The BCMCS business can be used for video stream application and provides the video conference ability to mobile radio station 100.Typical video stream application comprises live broadcast and video request program (VOD).Fig. 2 and Fig. 3 illustrate two kinds of application.

In Fig. 2, BCMCS stream flows to many mobile radio stations 100 from BCMCS-CS24, and these mobile radio stations 100 can be positioned at the different sectors of network.The content supplier 50 that is present in core network 20 or the PDN produces the content that BCMCS flows, and it can comprise the radio program of real-time broadcasting or storage.This content is a digital form.If this content supplier is outside this network, then this content supplier is with this content packetization, and to be sent to the BCMCS-CS24 in the core network 20 on IP network, BCMCS-CS24 can be used this content by the mobile radio station in this cordless communication network.This stream is replicated on the breakout of BCMCS stream in network 10, so that can be used by different sectors.One or more RBS36 flow to mobile radio station 100 broadcasting BCMCS on Forward Broadcast Channel.

In Fig. 3, four mobile radio stations 100 (MS1-4) are in the participating television meeting.BCMCS stream from a mobile radio station 100 (MS1) is illustrated, yet those of ordinary skills will be understood that similar BCMCS stream originates from each in the mobile radio station 100.Originating mobile station 100 (MS1) sends BCMCS stream to service RBS36 on the reverse link broadcast channel.Network 10 is routed to one or more terminal RAN30 with this BCMCS stream, and terminal RAN30 broadcasts this BCMCS stream to terminal mobile radio station 100 (MS2-4) on Forward Broadcast Channel.Fig. 3 illustrates three the terminal mobile radio stations 100 (MS2-4) in two different RAN30.

By being entitled as the reception that a plurality of processes of describing in " broadcasting and multicast service framework X.P0019; Rev.0.1.4 (on March 15th, 2004) (framework) (Broadcast and Multicast Services Framework X.P0019; Rve.0.1.4 (March 15,2004) (Framework)) " make it possible to realize the BCMCS business in the acceptance of the bid of 3GPP2 standard.Basic process comprises that service discovering/notice, contents booking, content information obtain, content availability is determined, BCMCS registers, content receives and the BCMCS registration is cancelled.Network 10 provides one or more that user can be asked or notified mechanism about available BCMCS business.BCMCS-CS24 can serve as with mobile radio station 100 in the server of client's application communication.This client uses can ask the BCMCS business information from BCMCS-CS24, and perhaps BCMCS-CS24 can send sending out public notice certainly about the BCMCS business.Other service discovering/informing mechanism comprises the notice via SMS and WAP.No matter what mechanism of use is used for service discovering/notice, all the information that relates to BCMCS content and timetable is offered mobile radio station 100.Service discovering/informing mechanism provides about information and obtains needed essential information that should business, for example content name and zero-time.

The user preengages the BCMCS content, and selects him to want the content that receives.Contents booking can be carried out before or after service discovering/notice.User's subscription information is stored in the user profiles.In order to receive selected content, mobile radio station 100 is communicated by letter with BCMS controller 23, to obtain and the relevant session information of selected BCMCS content.This process is called as content information and obtains.This session information comprises transmission and the such information of application protocol that the stream of BCMCS stream identifier, for example header-compressed and/or the header removal of for example discerning BCMCS stream is handled and used.

The content availability deterministic process makes mobile radio station 100 can determine the availability of particular B CMCS stream.Service RBS36 can send availability information for content to MS in Overhead Message.If mobile radio station 100 can not be found availability information for content from this Overhead Message, then mobile radio station 100 can ask the BCMCS that wants to flow by making the BCMCS registration.

The BCMCS enrollment process is used for asking the transmission of BCMCS stream by mobile radio station 100.BCMCS registration request sends to service RBS36 by mobile radio station 100.If do not set up the bearer path between BCMCS-CS24 and the RBS36, then RBS36 will work in coordination with BCMCS-CS24 and set up bearer path.In case mobile radio station 100 begins to receive BCMCS stream, RBS36 just may require mobile radio station 100 regularly to register.When not receiving the mobile radio station 100 of this stream, registration regularly allows RBS36 this BCMCS stream of going off the air.

Mobile radio station 100 can be carried out BCMCS and cancel enrollment process, no longer monitors this BCMCS stream with notice RBS36 mobile radio station 100.Stop if be used for the Registry Timer of cancelling of mobile radio station 100, on RBS36, can also cancel registration by overtime.

The BCH that is used for sending on the interface aloft BCMCS stream can be shared channel or dedicated channel.Usually BCH will have forward link, but not have reverse link.In cdma2000, broadcast channel can comprise one or more forward supplemental channel (F-SCH).In addition, in cdma2000, BCH can for example carry on the forward packet data channel F-PDCH at shared Packet Data Channel.BCH transmits the grouping that comprises the BCMCS content that is produced by BCMCS-CS.BCH can also transmit the forward link signaling message.Each BCMCS stream is associated with identifier.As will be described in more detail, BCMCS stream can comprise one or more tributaries.

BCMCS stream sends to mobile radio station on Forward Broadcast Channel (F-BCH).BCH can comprise several subchannels that are called broadcast logical channel here.BCMCS stream transmits on a broadcast logical channel.Each broadcast logical channel can transmit one or more BCMCS streams.In order to make mobile radio station can successfully find and monitor broadcasted content, need the various parameters relevant with broadcasting are sent to mobile receiver on the interface aloft.This network is broadcasted these parameters with the form of extensively retouching Overhead Message on BCH.This broadcast overhead messages comprises logic channel to the mapping of physical channel be used for other parameter of BCMCS stream, so that mobile radio station can successfully receive this BCMCS stream.

Because video flowing and a large amount of resource of media stream consumption, therefore the invention provides and a kind ofly come the dynamic reallocation air interface resource and regulate the mechanism of BCMCS quality according to the resource that is exclusively used in BCMCS stream in response to changes in demand.For example, when demand surpassed the capacity of available resources, the resource management entity in the network can reduce the air interface resource that is exclusively used in appointment BCMCS stream.In this case, reduce the quality of BCMCS stream so that this BCMCS stream adapts to the air interface resource that reduces.On the contrary, when air interface resource was underutilized, resource management entity can increase the air interface resource that is exclusively used in this BCMCS stream.In this case, the quality that strengthens BCMCS stream flows to provide higher QoS to receive this BCMCS.

Can use the various technology that are used for adaptive BCMCS current mass.For example, can change the source code of broadcasting stream to reduce data rate.In a preferred embodiment of the invention, the hierarchical coding algorithm is used for coming corresponding to the demand that changes the quality of adaptive BCMCS stream in conjunction with the Delamination Transmission scheme.The content of each BCMCS stream can comprise video, audio frequency or other content of multimedia, it is encoded as a plurality of layers, these a plurality of layers comprise basic layer and one or more enhancement layer, and wherein one or more enhancement layers can combinedly successively provide qualitative progressive improvement.For example, be used for MPEG-2, the MPEG-4 of video compression and transmission and H.263 standard support the video coding of layering.Basic layer comprises the data of representing the video most important characteristics.Other enhancement layer comprises the data of this video of progressive improvement.For example, MPEG-2 and H.263 standard accumulate the video coding of layering with four kinds of scalable pattern supports, wherein four kinds of scalable patterns are: spatial scalability, time scalability, SNR scalability and data sementation.The combination of these scalable patterns causes the hybrid salable formed by a large amount of layers.Network has the ability that change in response to resource utilization optionally changes the number of plies in the BCMCS stream and optionally changes the BCMCS current mass on each aspect in the network thus.The number of plies in the reduction BCMCS stream has reduced the bandwidth needs of this stream, supports that to reduce this BCMCS flows needed air interface resource.

Fig. 4 is shown in the logical network unit of the bandwidth needs that are used for adaptive BCMCS stream in the exemplary embodiments of the present invention.Explorer 60 monitoring resource utilizations, and determine to distribute to the resource of specifying BCMCS stream.Flow manager 62 receives layered contents from BCMCS-CS24, and the resource that makes layered contents be adapted to distribute in response to explorer 60, in one embodiment, and with hierarchical coding algorithm this content of encoding.Explorer 60 determines to be assigned to hierarchy number or the bit rate that the resource of this stream can be held.This flow manager 62 produces BCMCS stream in response to explorer 60, and this stream has the quality that is adapted to distribute to the resource that this broadcasting flows.During the congested cycle, in fact flow manager 62 serves as adjusting flows to the BCMCS stream of mobile radio station 100 from BCMCS-CS24 adjuster.In a preferred embodiment, BCMCS-CS24 sends to flow manager with all layers, and flow manager matches layer in response to explorer 60.

Many technology can be used for changing the layer in the BCMCS of carrying layered contents stream.In one approach, be called grouping filter method here, BCMCS-CS24 provides to flow manager 62 and comprises a plurality of layers single BCMCS stream.Use hierarchical coding algorithm this BCMCS stream of encoding.Discern grouping by the information in this packet header of being included in corresponding to different layers.Flow manager 62 comprises packet filter, and this packet filter filters the grouping in this BCMCS stream, and is discarded in those groupings that do not send on this air interface.

In another approach, be called many threads method here, BCMCS stream is divided into a plurality of " carefully " streams corresponding to the different coding layer.The independent tributary of each layer conduct sends to flow manager 62 from BCMCS-CS24.Each tributary is associated with identical BCMCS stream identifier.Flow manager 62 is selected to be sent to the layer of mobile radio station 100 on the interface aloft, and abandons nonoptional layer.Preferably, selected layer aloft sends before and can be merged by flow manager 62 on the interface.This method has reduced the calculation requirement on mobile radio station.Replacedly, selected layer can be sent out individually, and merges on mobile radio station 100.

In the third method, be called group of methods here, a plurality of BCMCS streams send to flow manager 62 from BCMCS-CS.Each stream carries identical content, but has the coding layer of varying number.For example, a stream can only comprise basic layer, and second stream can comprise the basic layer and first enhancement layer, and the 3rd stream can comprise basic layer and two enhancement layers.Like this, therefore each stream, be called each stream a group here corresponding to different layer groupings.A plurality of groups can be associated with identical BCMCS stream identifier.May need other identifier to discern each group.According to the resource of distributing to particular B CMCS stream, flow manager 62 is selected the group of the first water that can be held by the resource of distributing to this BCMCS stream.Selected group sends to mobile radio station 100 on the interface aloft.

In a kind of distortion of this group of methods, a plurality of groups can send to mobile radio station 100 on the interface aloft simultaneously.The group that mobile radio station 100 can come independent selection to receive according to the ability and the service profile of mobile radio station.Each group can be encrypted, and need to be stored in the difference reservation in this user's the reservation profile.But, send all groups when the resource time spent.Explorer 60 can dynamically increase or delete the group that sends on the interface aloft according to the availability of air interface resource.

When the quality of adaptive BCMCS stream, can consider the other factors except that network state.For example, this network can utilize the understanding of mobile radio station ability is avoided sending the content that can not be received by any mobile radio station 100.For example, if there is not to receive and to handle mobile radio station more than 3 layers, then sending on the interface more than three layers aloft is waste resources.The mobile radio station ability is illustrated by the broken lines in Fig. 4 to the feedback of explorer 60.

Explorer 60 may reside on the interior individual node of network, perhaps can be distributed in two or more nodes.In an exemplary embodiments, explorer 60 is present in the BSC, and connects a sector and realize on the basis of a sector that dynamic mass regulates.Flow manager 62 can be positioned on each RBS36 or BSC34 of RAN30.The maximum flexibility that provides on BSC34 or the RBS36 in response to the local change of resource utilization is provided flow manager 62, and will need any change in the core network.Replacedly, flow manager 62 can be positioned on the BSN22 in the core network 20, or integrates with BCMCS-CS server 24.

The resource utilization of the different business of explorer 60 monitoring such as voice, grouped data and broadcasting services, and determine how to distribute available radio resources.Explorer 60 dynamically changes the distribution of those resources according to resource utilization.If it is congested that sector begins to experience, then the redistribute resources that BCMCS just can used of explorer 60 is to speech business or other business.On the contrary, if sector load is light, then explorer 60 can be given the BCMCS business with untapped resource allocation, to improve QoS.

The resource of management will depend on the type of the channel that is used to transmit broadcasting service.For the forward-link communication in the cdma network, type according to the channel that is used for transport service, explorer 60 can be managed two types resource-1) be used for Walsh (Walsh) sign indicating number and the power of dedicated channel, and 2) be used for the time slot and the power of shared channel.Flow needed bandwidth based on BCMCS, explorer 60 determines which type of specific resources is distributed to this BCMCS stream, and determines the number of plies that can be held by institute's Resources allocation.Flow manager 62 correspondingly changes the quality of BCMCS stream in response to explorer 60.

In a preferred embodiment of the invention, explorer 60 is measured for example use of the limited resources of power and available walsh codes.Explorer 60 can be measured current available stock number that using or current.For example, if the resource of monitoring is a power, then explorer 60 can be monitored by each professional gross power of using with by all professional rates of using altogether.Explorer can be compared the power measurement result with indication predetermined threshold congested or that underuse.Based on the comparison of predetermined threshold, the explorer air interface resource of can reallocating is to reduce the stock number that is consumed by BCMCS.As described above, can adjust the quality of BCMCS stream by using the hierarchical coding algorithm.

Explorer 60 can use the filtration load designator to come adaptive broadcast channel.Because resource utilization may change rapidly in mobile communication system, can be filtered to adjust 60 pairs of responsivenesses that change state of explorer so determine the employed tolerance of resource of distributing to BCMCS.For example making the content changing in the broadcasting will not be desirable too rapidly, realize that this changes needed expense because frequent change can increase.In addition, the too frequent change of broadcasting-quality can be done just user.

In another aspect of this invention, when changing the quality of BCMCS stream, network provides clearly notice to mobile radio station 100, with avoid service disconnection and realize changing between level and smooth transformation.The possible operation pattern relevant with this BCMCS stream can be notified to mobile radio station 100.For example during content information obtains or in registration with during receiving BCMCS stream, mobile radio station can obtain this information.Each operator scheme defines the BCMCS session parameter of this coding corresponding to one group and mobile radio station 100 successfully receives and the BCMCS that decodes flows needed other parameter.Each operator scheme has the pattern recognition symbol of unique this operator scheme of identification.

According to the present invention, provide the notice that changes in the BCMCS stream by sending the new session parameters that comprises the pattern recognition symbol to mobile radio station 100.The session parameter that comprises the pattern recognition symbol can be used as the part of broadcast service parameters message (BSPM) in paging channel (PCH) or upward transmission of Broadcast Control Channel (BCCH).BSPM makes network can specify the broadcast control message of the session parameter relevant with BCMCS stream.Session parameter can also be specified and the relevant new logic-physical mappings (LPM) of this BCMCS stream.

According to one embodiment of present invention, two new arguments are increased to BSPM: service time parameter and operate time parameter.Service time, parameter was the 1-bit indicator, and this designator notice mobile radio station 100 is unsettled with the change that BCMCS flows in the relevant session parameter.Operate time, parameter accurately notified the change in mobile radio station 100 session parameters when will be effective.Service time, parameter was single bit.When service time, parameter was set to " 1 ", mobile radio station 100 was indicated in the parameter operate time time of appointment and brings into use the new session parameters that is included among the BSPM.Operate time, parameter was the 6-bit field, and its unit with 80 milliseconds (moulds 64) comes the new argument of indication mechanism time broadcast channel will become effective.

When mobile radio station 100 received BSPM, mobile radio station 100 was compared the sequence number of BSPM with the sequence number in being stored in memory, whether received this message with before determining.If, then ignore this message, if BSPM is a new information, then mobile radio station 100 is handled the residue field in these message.Any new BSPM parameter all is stored in the memory.If service time, parameter was set to " 1 ", then mobile radio station continued to use old BSPM parameter before the operate time of appointment, called new argument then.The parameter of BSPM can be specified the variation in new logic channel-physical channel mapping and/or the BCMCS stream content.For example, BSPM can indicate the employed coding of broadcasting and the number of plies to mobile radio station 100.

In cdma system, the mobile radio station 100 in soft handover/More Soft Handoff can receive identical information from two or more sectors.In order to merge the information that sends from two or more sectors, mobile radio station 100 need receive identical information from two sectors.When the mobile radio station 100 that receives BCMCS stream is in soft handover, needed coordinated by the transmission of soft merging from a plurality of sectors.Except transmission was used for the LPM and operator scheme of BCMCS stream, network can also transmit to mobile radio station can merged soft handover neighborhood.In this case, mobile radio station 100 can be programmed for only soft merging from those can compatible sector transmission.

Is to have one to trade off between the best sector allowing mobile radio station 100 soft combination with the change in the BCMCS stream being restricted to only that those change therein.Thereby mobile radio station 100 may always can be in conjunction with the transmission from adjacent sectors.For example, if a sector load is light, and adjacent sector load is heavy, then can send BCMCS stream in each sector with different codings.In this case, mobile radio station 100 can not be in conjunction with the BCMCS stream from adjacent sectors.In many cases, can tolerate the forfeiture of the soft combination ability that the BCMCS from different sectors is flowed.Yet, if the sector is little, and mobile radio station 100 high-speed mobile, may be more remarkable from the forfeiture of the soft combination ability of the BCMCS stream of different sectors.If the service provider thinks that the soft combination ability is important, then the service provider can be grouped into the sector bigger service area.Each sector in service area sends same BCMCS stream, thereby keeps the ability of soft combination from the BCMCS stream of different sectors in the identical broadcasts district.In this case, each service area can have single explorer 60.If service area is corresponding to one group of sector by single BSC34 management, then explorer 60 can be positioned on the BSC34 easily.In another embodiment, explorer 60 can be positioned PCF32 in the RAN30 and goes up or be positioned on the BSN22 in the core network 20.Resource utilization in explorer 60 monitoring all sectors in service area, and determine the operator scheme that this BCMCS flows.In this case, explorer 60 is selected the operator scheme of the first water that can be held by all sectors.

Up to the present among the described embodiment, supposed that BCMCS stream originates from cable network and ends at mobile radio station.In this case, broadcasting stream sends to RBS36 from content supplier 50 on cable network, and sends to mobile radio station 100 on the interface aloft by RBS36.In some embodiments of the invention, BCMCS stream can initiate on mobile radio station 100 and stop.A kind of application that this situation may occur is video conference as shown in Figure 3, if two or more mobile radio station 100 positive participating television meetings, then each mobile radio station 100 produces BCMCS stream, this BCMCS stream sends to cordless communication network 10 on reverse chain channel, and be routed to the RBS36 that service is provided for this reception mobile radio station 100, and on forward link broadcast channel, send to and receive mobile radio station 100 by network 10.In this case, explorer 60 as the use of describing in the past describe below some change and control the resource that is used for forward link channel, to consider from originating mobile station 100 to network the performance of 10 reverse chain channel.More particularly, providing aspect the Forward Broadcast Channel, explorer 60 can have been considered the performance from the reverse link of mobile radio station 100.The resource of reverse chain-circuit capacity that has exceeded from the mobile radio station that starts for the BCMCS flow distribution is no advantage on the forward link.By considering the performance of reverse link, avoided the supply that exceeds of forward link.Therefore, explorer 60 can limit the air interface resource that is assigned to BCMCS stream based on the reverse chain-circuit capacity from the mobile radio station 100 that starts.

On reverse link, constraint factor is the interference between the different user in the sector.The transmission power level of service RBS36 control mobile radio station 100.Usually carry out power control by the transmitted power of control Reverse Pilot Channel.Recently limit available transmitted power by business-pilot tone.Controlled from the explorer 60 of reverse chain channel of the mobile radio station 100 that starts and determined the number of plies that on reverse link, sends, and given the explorer 60 of control forward link resources the quality report of the BCMCS stream that on reverse chain channel, receives.As noted above, can use by forward link resources manager 60 from the report of reverse link resources manager 60, so that forward link broadcast channel to be provided.Equally, when the capacity of reverse chain channel surpassed the capacity of forward link broadcast channel, the explorer 60 that is used for forward link broadcast channel can return feedback information reverse link resources manager 60, provided reverse link to prevent to exceed.Therefore, the explorer 60 that is used for reverse chain channel and forward link broadcast channel can be consulted one and can be banishd by the suitable BCMCS that forward link and reverse link broadcast channel can both hold and put.

Claims (53)

1. method that broadcasting service is provided in cordless communication network comprises:

The broadcasting stream that a. will be derived from content supplier on forward link broadcast channel sends to one or more mobile radio stations;

B. monitor the utilance of forward link air interface resources; With

C. dynamically adjust the forward link air interface resources that is assigned to this broadcasting stream in response to the change of forward link air interface resources utilance; With

D. in response to the quality that described broadcasting stream is regulated in the adjustment of the forward link air interface resources of distributing.

2. the process of claim 1 wherein that the quality of regulating broadcasting stream comprises the number of plies that changes with in the broadcasting stream of hierarchical coding algorithm coding.

3. the method for claim 2, wherein change with the number of plies in the broadcasting stream of hierarchical coding algorithm coding and be included in the broadcasting stream that has first number of plies in this cordless communication network to the flow manager input, change the number of plies in this broadcasting stream by flow manager, and export the broadcasting with second layer number from flow manager and flow, to send to mobile radio station from network node.

4. the method for claim 3, the broadcasting stream that wherein is input to flow manager comprises the single stream that comprises described first number of plies.

5. the method for claim 4, wherein the broadcasting stream from flow manager output comprises the single stream that comprises second number of plies.

6. the method for claim 4, wherein the broadcasting stream from flow manager output comprises a plurality of streams, each flows corresponding to one in described second number of plies.

7. the method for claim 3, the broadcasting stream that wherein is input to flow manager comprises a plurality of streams.

8. the method for claim 7, wherein each to the inlet flow of flow manager corresponding to one in described first number of plies.

9. the method for claim 8, wherein the broadcasting stream from flow manager output comprises single stream, this stream comprises the selection layer corresponding to a plurality of inlet flows.

10. the method for claim 9, wherein the broadcasting stream from flow manager output comprises corresponding to one or more streams of selecting layer.

11. the method for claim 7, wherein each inlet flow to flow manager comprises one group one or many interlayers.

12. the method for claim 11 is a single stream corresponding to selected group from the output stream of flow manager wherein.

13. the process of claim 1 wherein that the quality of regulating broadcasting stream comprises the coding that changes broadcasting stream.

14. the process of claim 1 wherein that the utilance of monitoring forward link air interface resources comprises the transmit power assignment of monitoring on one or more forward link channels.

15. the process of claim 1 wherein that the utilance of monitoring forward link air interface resources comprises the walsh-code assignments of monitoring on one or more dedicated forward link channels.

16. the process of claim 1 wherein that the utilance of monitoring forward link air interface resources comprises the time slot allocation of monitoring on one or more shared forward link channels.

17. the method for claim 1 further comprises to mobile radio station sending the broadcasting service parameter, is exclusively used in the forward link air interface resources of this broadcasting stream with indication.

18. the method for claim 17, wherein broadcasting service parameter indication is applied to the adjusting of the broadcasting stream that sends on the interface aloft.

19. the method for claim 18, wherein the broadcasting service parameter that sends to mobile radio station comprises that identification is used for the pattern recognition symbol of the broadcasting service parameter set of this broadcasting stream.

20. the method for claim 17, wherein the broadcasting service parameter that sends to mobile radio station comprise indicate in advance broadcast parameter when effectively operate time parameter.

21. the process of claim 1 wherein that content supplier is the originating mobile station that sends this broadcasting stream on reverse chain channel to cordless communication network.

22. the method for claim 21 further comprises the capacity of determining the reverse link broadcast channel, and is adjusted in the quality of the broadcasting stream that transmits on the reverse chain channel.

23. the method for claim 22 comprises that further restriction is exclusively used in the forward link air interface resources of described broadcasting stream based on the quality of the broadcasting stream that sends on reverse chain channel.

24. the method for claim 22 comprises that further restriction is exclusively used in the reverse link air interface resource of described broadcasting stream based on the quality of the broadcasting stream that transmits on forward link broadcast channel.

25. the process of claim 1 wherein that the quality of regulating broadcasting stream comprises that the content adaptation that makes broadcasting stream is in the forward link air interface resources of distributing.

26. a system that is used for providing at mobile radio communication network broadcasting service comprises:

Explorer, the utilance of monitoring forward link air interface resources is also dynamically adjusted in response to the variation of forward link air interface resources and to be assigned to the forward link air interface resources that broadcast to flow; With

Flow manager is in response to the quality that broadcasting stream is regulated in the adjustment of the forward link air interface resources of distributing.

27. the system of claim 26 uses the hierarchical coding algorithm to come encoded broadcast stream, and wherein, the quality that flow manager is regulated this broadcasting stream by the number of plies that changes in the broadcasting stream.

28. the system of claim 27, the broadcasting stream that wherein is input to flow manager comprises the single stream that comprises first number of plies.

29. the system of claim 28, wherein the broadcasting stream from flow manager output comprises the single stream that comprises second number of plies that is less than or equal to first number of plies.

30. the system of claim 28, wherein the broadcasting stream from flow manager output comprises a plurality of streams, and each stream is corresponding to a layer of broadcasting stream.

31. the system of claim 27, the broadcasting stream that wherein is input to flow manager comprises a plurality of streams.

32. the system of claim 31, wherein each layer that flows corresponding to broadcasting to the inlet flow of flow manager.

33. the system of claim 32, wherein the broadcasting stream from flow manager output comprises single stream, and this stream comprises the selection layer of broadcasting stream.

34. the system of claim 32, wherein the broadcasting stream from flow manager output comprises corresponding to one or more streams of selecting layer.

35. the system of claim 31, wherein each inlet flow to flow manager comprises one group of one or more layer.

36. the system of claim 35 is a single stream corresponding to selected group from the output stream of flow manager wherein.

37. the system of claim 26, wherein flow manager is regulated the quality of this broadcasting stream by the coding that changes broadcasting stream.

38. the system of claim 26, the wherein transmit power assignment of explorer monitoring on one or more forward link channels.

39. the system of claim 26, the wherein walsh-code assignments of explorer monitoring on one or more dedicated forward link channels.

40. the system of claim 26, the wherein time slot allocation of explorer monitoring on one or more shared forward link channels.

41. the system of claim 26, wherein explorer sends the broadcasting service parameter to mobile radio station, is exclusively used in the forward link air interface resources of broadcasting stream with indication.

42. the system of claim 41, wherein broadcasting service parameter indication is applied to the adjusting of the broadcasting stream that sends on the interface aloft.

43. the system of claim 42, wherein the broadcasting service parameter that sends to mobile radio station comprises that identification is used to broadcast the pattern recognition symbol of the broadcasting service parameter set of stream.

44. the system of claim 41, wherein the broadcasting service parameter that sends to mobile radio station comprise indicate in advance this broadcast parameter when effectively operate time parameter.

45. the system of claim 26 wherein broadcasts stream and originates from the mobile radio station that sends this broadcasting stream on reverse chain channel to cordless communication network.

46. the system of claim 45, wherein explorer limits the forward link air interface resources that is exclusively used in this broadcasting stream based on the quality that flows from the broadcasting of originating mobile station transmission on reverse chain channel.

47. the system of claim 45, wherein explorer sends based on the adjusting that is used for transmitting on forward link broadcast channel and comprises that restriction is exclusively used in the information of the reverse link air interface resource of this broadcasting stream.

48. the method that broadcasting service is provided in cordless communication network comprises:

On Forward Broadcast Channel, send broadcasting stream to one or more mobile radio stations; With

Send the new session parameters be associated with this broadcasting stream to mobile radio station, this new session parameters comprise indicate this new session parameters when effectively operate time parameter.

49. the method for claim 48, the wherein change of new session parameters indication broadcasting current mass.

50. the method for claim 48, wherein new session parameters indication is used to transmit the change of the air interface resource that this broadcasting flows.

51. the method for a receiving broadcast service in cordless communication network comprises:

Receive broadcasting stream by Forward Broadcast Channel at mobile radio station;

Receive the message comprise new session parameters at mobile radio station, wherein new session parameters comprise the indication new session parameters when effectively operate time parameter; With

Reconfigure this mobile radio station based on new session parameters the operate time in appointment.

52. the method for claim 51, the wherein change of new session parameters indication broadcasting current mass.

53. the method for claim 51, wherein new session parameters indication is used to transmit the change of the air interface resource that this broadcasting flows.

Images