CN101742409B

CN101742409B - Method, system and equipment for realizing synchronization of multicast/broadcast service (MBS) of multi-hop system

Info

Publication number: CN101742409B
Application number: CN200810175348A
Authority: CN
Inventors: 曾云宝
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2008-11-06
Filing date: 2008-11-06
Publication date: 2012-10-17
Anticipated expiration: 2028-11-06
Also published as: CN101742409A

Abstract

The invention discloses a method, a system and equipment for realizing the synchronization of a multicast/broadcast service (MBS) of a multi-hop system, which belong to the field of communication. In the multi-hop system of a plurality of cells, the method comprises the following steps: acquiring a maximum processing delay of the cells by base stations of each cell; reporting the acquired maximum processing delay to an MBS gateway; receiving an MBS transmitting time transmitted by the MBS gateway; and transmitting an MBS data packet to each of relay branches of the base stations according to the MBS transmitting time. The system comprises the MBS gateway, the base stations and the relay branches. The equipment comprises the MBS gateway, the base stations and a relay. The method, the system and the equipment fully take the processing delays of each cell into consideration, thereby ensuring that the MBS data packet can be prepared in advance when the MBS of each stage of stations are initiated, enabling the MBS data packet to be transmitted successfully, and realizing transmitting the MBS data packet to a user synchronously.

Description

Realize synchronous method, system and the equipment of multicast/broadcast service (MBS) of multihop system

Technical field

The present invention relates to the communications field, particularly realize synchronous method, system and the equipment of multicast/broadcast service (MBS) of multihop system.

Background technology

MBS (Multi-cast Broadcast Service; Multimedia Broadcast Multicast Service) is a kind of technology of raising frequency spectrum service efficiency of practicality; Be widely used in 3G (3rd Generation, the third generation digital communication) system, and at TD-SCDMA (Time Division Synchronous Code Division Multiple Access; TD-SCDMA (Time Division-Synchronous Code Division Multiple Access)) system and WCDMA (Wideband Code Division Multiple Access; Wideband CDMA Technology) also begins in the system to use, in the 4G in future (4th Generation, the communication of the 4th algebraically word) system; Also will obtain large-scale application like LTE+ (Long Term Evolution+, Long Term Evolution+).

For MBS is professional, because its business is a Multimedia Broadcast Multicast Service,, promptly must guarantee synchronously so the MBS business must be sent packet simultaneously, can receive message simultaneously to guarantee its user, thereby reach the effect of broadcast multi-broadcasting.

At present, can realize the MBS service synchronization under the conventional cellular communication system, i.e. the MBS service synchronization solution of a plurality of sub-districts of single-hop systems.So-called single-hop systems is meant the system that does not comprise relaying RS (Relay Station).Referring to Fig. 1; The cellular communication system of realizing the MBS service synchronization comprises: terminal use UE, each cell base station eNB (ehanced NodeB; The enhancement mode broadcast base station), MBS gateway (Multi-cast Broadcast Service gateway, multicast and broadcast gateway) and base station BS.

Cellular communication system is in order to transmit the MBS business, and the eNB of relevant each sub-district must frame synchronization, otherwise can't realize that MBS is professional.Concrete frame synchornization method does not belong to the solution category of this programme, utilizes GPS (Global Positioning System, global positioning system) synchronous like TD-SCDMA, is exactly a synchro system originally, does not need extra synchronous again.On the basis of frame synchronization, the E-MBS gateway is informed the transmitting time of its MBS business data packet of each eNB considering that the MBS business data packet arrives on each eNB website propagation delay time basis, like frame number etc.

After prior art is analyzed; The inventor finds: what the System Frame Number of cellular communication system was synchronous at present confirms just according to confirming on the frame synchronization basis of each eNB; Do not consider its multi-hop characteristic; Therefore, following problem may appear: when eNB receives the MBS business data packet, and learn that it will send the System Frame Number of MBS business data packet; If eNB from receive the MBS business data packet to the time interval the System Frame Number that sends the MBS business data packet less than eNB from receiving the MBS business data packet to the time interval that the MBS packet is transmitted to other subordinate's websites, the failure that will cause packet to send.For example eNB receives that the System Frame Number of MBS business data packet is 8, and the System Frame Number that will send the MBS business data packet is 9, so from eNB receive the MBS business data packet to the time interval the System Frame Number that sends the MBS business data packet be 1; If eNB is 10 with the System Frame Number that the MBS packet is transmitted to other subordinate's websites, so eNB from receive the MBS business data packet to the time interval that the MBS packet is transmitted to other subordinate's websites be 2; At this moment, when System Frame Number 9, send the MBS business data packet simultaneously, and the website under the eNB is just to receive packet at 10 o'clock at System Frame Number; Do not receive packet this moment; So can't be 9 o'clock, send the MBS business data packet, thereby cause the MBS packet to send failure at System Frame Number.

Summary of the invention

In order to realize packet to user's synchronized transmission MBS, reach the effect of broadcast multi-broadcasting, the invention provides a kind of synchronous method, system and equipment of multicast/broadcast service (MBS) of realizing multihop system.

The present invention provides a kind of synchronous method of multicast/broadcast service (MBS) that realizes multihop system, and in the multihop system of a plurality of sub-districts, method comprises:

The base station of each sub-district obtains the maximum processing delay of sub-district separately; Wherein, the maximum processing delay of sub-district is the processing delay of the relaying branch road of processing delay maximum in each relaying branch road under the sub-district;

The maximum processing delay that each base station is obtained reports the MBS gateway;

Receive the professional transmitting time of MBS that the MBS gateway issues; Wherein, the professional transmitting time of MBS maximum processing delay that to be the MBS gateway report according to each base station and MBS gateway obtain to the propagation delay time of base station;

According to the professional transmitting time of MBS, send the MBS business data packet;

The professional transmitting time of MBS maximum processing delay that to be the MBS gateway report according to each base station and MBS gateway obtain to the propagation delay time of base station, specifically comprise:

Maximum processing delay according to each base station reports forms a time delay collection;

Maximum in the maximum processing delay that concentrated each base station of selection time delay reports;

Maximum, MBS gateway to time delay is concentrated are sued for peace to the propagation delay time of base station;

The maximum that time delay is concentrated, MBS gateway arrive the minimum value of the propagation delay time sum of base station as the professional transmitting time of MBS.

Correspondingly,

Each relaying on each relaying branch road of base station reports the base station with self processing delay;

Relaying obtains professional transmitting time of MBS and MBS business data packet; Wherein, the maximum processing delay of the professional transmitting time of MBS each relaying branch road that to be the MBS gateway report according to each base station and MBS gateway obtain to the propagation delay time of base station;

Relaying sends the MBS business data packet according to the professional transmitting time of MBS and self processing delay to the user;

The maximum processing delay of the professional transmitting time of MBS each relaying branch road that to be the MBS gateway report according to each base station and MBS gateway obtain to the propagation delay time of base station, specifically comprise:

The maximum processing delay of each the relaying branch road that reports according to each base station forms a time delay collection;

Maximum in the maximum processing delay of each relaying branch road that concentrated each base station of selection time delay reports;

The present invention also provides a kind of synchronous system of multicast/broadcast service (MBS) that realizes multihop system, and system comprises: MBS gateway, base station and relaying branch road; Wherein, the base station is a plurality of;

The MBS gateway is used to receive the maximum processing delay that each base station reports; Maximum processing delay that reports according to each base station and MBS gateway obtain the professional transmitting time of MBS to the propagation delay time of base station; The professional transmitting time of MBS is handed down to each base station;

The base station is used to obtain the maximum processing delay of sub-district; The maximum processing delay of obtaining is reported the MBS gateway; Receive the professional transmitting time of MBS that the MBS gateway issues; According to the professional transmitting time of MBS, send the MBS business data packet and give the relaying branch road;

The relaying branch road is used to receive the MBS business data packet and the professional transmitting time of MBS of sending the base station; According to the professional transmitting time of MBS, send the MBS business data packet to the user;

Maximum processing delay that reports according to each base station and MBS gateway obtain the professional transmitting time of MBS to the propagation delay time of base station, specifically comprise:

The concentrated maximum of prolong, MBS gateway are sued for peace to the propagation delay time of base station;

The present invention also provides a kind of MBS gateway device, and the MBS gateway device comprises: determination module with issue module, wherein,

Determination module is used to receive the maximum processing delay that each base station reports; Maximum processing delay according to each base station reports forms a time delay collection; Obtain the maximum that time delay is concentrated; According to the maximum of obtaining and MBS gateway propagation delay time, obtain the professional transmitting time of MBS to the base station;

Issue module, the professional transmitting time of MBS that is used for determination module is obtained is handed down to the base station;

According to the maximum of obtaining and MBS gateway propagation delay time to the base station, obtain the professional transmitting time of MBS, specifically comprise:

The present invention also provides a kind of base station, and the base station comprises: acquisition module, reporting module, receiver module and processing module, wherein,

Acquisition module is used to obtain the maximum processing delay of sub-district;

Reporting module is used for the maximum processing delay that acquisition module obtains is reported the MBS gateway;

Receiver module is used to receive the professional transmitting time of MBS that module issues that issues of MBS gateway; Wherein, the professional transmitting time of MBS maximum processing delay that to be the MBS gateway report according to each base station and MBS gateway obtain to the propagation delay time of base station;

Processing module is used for the professional transmitting time according to the MBS of receiver module reception, sends the MBS business data packet and gives the relaying branch road;

The present invention also provides a kind of relaying, and relaying comprises: reporting module, acquisition module and sending module, wherein,

Reporting module is used for self processing delay is reported the base station;

Obtain module; Be used to receive the MBS business data packet and the professional transmitting time of MBS of sending the base station; Wherein, the maximum processing delay of the professional transmitting time of MBS each relaying branch road that to be the MBS gateway report according to each base station and MBS gateway obtain to the propagation delay time of base station;

Sending module according to the professional transmitting time of MBS, sends the MBS business data packet to the user;

The beneficial effect of the technical scheme that the embodiment of the invention provides is:

On the synchronous basis of embodiment of the invention websites at different levels in guaranteeing each sub-district; Report the MBS gateway through maximum processing delay with each sub-district; Considered the processing delay of each sub-district comprehensively, when initiating, can be ready to the MBS packet in advance, made the MBS business data packet send successfully to guarantee website MBS business at different levels; Realize sending the MBS packet and given the synchronous of user, reached the effect of broadcast multi-broadcasting.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation of prior art cellular communication system;

Fig. 2 is the structural representation of method of the MBS service synchronization of the realization multihop system that provides of the embodiment of the invention 1;

Fig. 3 is the concrete realization flow sketch map of method of the MBS service synchronization of the realization multihop system that provides of the embodiment of the invention 1;

Fig. 4 is the structural representation of method of the MBS service synchronization of the realization multihop system that provides of the embodiment of the invention 2;

Fig. 5 is the concrete realization flow sketch map of method of the MBS service synchronization of the realization multihop system that provides of the embodiment of the invention 2;

Fig. 6 is the system schematic of the MBS service synchronization of the realization multihop system that provides of the embodiment of the invention 3;

Fig. 7 is the MBS gateway device sketch map of the MBS service synchronization of the realization multihop system that provides of the embodiment of the invention 4;

Fig. 8 is the base station sketch map of the MBS service synchronization of the realization multihop system that provides of the embodiment of the invention 5;

Fig. 9 is the relaying sketch map of the MBS service synchronization of the realization multihop system that provides of the embodiment of the invention 6.

Embodiment

For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.Obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.

The present invention is directed to present solution and just solved the eNB website MBS service synchronization of minizone for single-hop systems; Can not guarantee the problem of MBS service synchronization of the whole M BS sub-district of each subordinate's website and its higher level's website in the multihop system; The minizone of having taken all factors into consideration multihop system reaches the MBS service synchronization with each subordinate's website; Proposed a kind of synchronous method of multicast/broadcast service (MBS) that realizes multihop system, in the multihop system of a plurality of sub-districts, this method thes contents are as follows:

The base station of each sub-district obtains the maximum processing delay of sub-district; Wherein, the maximum processing delay of said sub-district is the maximum in the processing delay in each relaying branch road under the said sub-district;

The said maximum processing delay of obtaining is reported the MBS gateway;

Receive the professional transmitting time of MBS that said MBS gateway issues; Wherein, the professional transmitting time of said MBS maximum processing delay that to be said MBS gateway report according to each base station and MBS gateway obtain to the propagation delay time of base station;

According to the professional transmitting time of said MBS, each the relaying branch road to said base station sends said MBS business data packet.

Correspondingly, each relaying branch road of base station reports the base station with self processing delay;

The relaying branch road obtains professional transmitting time of MBS and MBS business data packet; Wherein, the maximum processing delay of the professional transmitting time of MBS each relaying branch road that to be the MBS gateway report according to each base station and MBS gateway obtain to the propagation delay time of base station;

The relaying branch road sends the MBS business data packet according to the professional transmitting time of MBS, self processing delay to the user.

On the synchronous basis of method provided by the invention websites at different levels in guaranteeing each sub-district; The mode of each MR-BS (Multi Relay Base Station, the base station of multihop system) through returning Backhaul (back haul link) reports the MBS gateway with the maximum processing delay of each sub-district, after the MBS gateway has obtained the maximum processing delay of MBS sub-district; Form a time delay collection; Maximum and the propagation delay time of MBS gateway to the base station according to this time delay is concentrated obtain MBS business transmitting time, and notify each MR-BS; Made before the MBS business data packet is carried out multicast and broadcast; The MBS business data packet has all arrived each relaying under each MR-BS and each MR-BS, has guaranteed the transmission success of MBS business data packet, reaches the effect of broadcast multi-broadcasting.Each embodiment carries out detailed description to the technical scheme that the embodiment of the invention provides below will combining below.

Embodiment 1

The embodiment of the invention provides a kind of synchronous method of multicast/broadcast service (MBS) that realizes multihop system; This method can guarantee to begin before the MBS business; The MBS packet has all arrived each relaying RS under each MR-BS and each MR-BS; Thereby guaranteed the transmission success of MBS business data packet, realized the MBS service synchronization of each MR-BS of whole M BS sub-district.

For the ease of explanation; The embodiment of the invention is an example with 2 jumping systems; Specify the MBS of multihop system how to realize a plurality of sub-districts professional synchronously, supposing has two MR-BS:MR-BS1 and MR-BS2 under the whole M BS sub-district, wherein; A relaying RS1 is arranged under the MR-BS1, a relaying RS2 is arranged under the MR-BS2.Referring to Fig. 2, MR-BS1 is connected the MBS gateway with MR-BS2, and a relaying RS1 is arranged under the MR-BS1, and relaying RS1 directly connects the user down; A relaying RS2 is arranged under the MR-BS2, and relaying RS2 directly connects the user down.Referring to Fig. 3, its concrete realization flow is following:

101:MR-BS1 obtains the processing delay T1 of the relaying RS1 of its subordinate, and MR-BS2 obtains the processing delay T2 of the relaying RS2 of its subordinate.The concrete realization thes contents are as follows:

The processing delay T1 that obtains the relaying RS1 of its subordinate with MR-BS1 below is an example, specifies the detailed process that each MR-BS obtains the processing delay of the relaying RS of its subordinate:

At first, relaying RS1 sends SBC-REQ (SS Basic Capability Request, basic capacity request) message to the base station MR-BS of multihop system 1, and the basic capacity parameter of carrying relaying RS1 in the SBC-REQ message comprises the processing delay T1 of relaying RS1;

Secondly; After the base station MR-BS 1 of multihop system is received SBC-REQ message; Obtain the processing delay T1 in the SBC-REQ message, and send SBC-RSP (SS Basic Capability Response, basic capacity response) message to relaying RS 1 according to the processing delay T1 that obtains.

Wherein, After the base station MR-BS 1 of multihop system is received SBC-REQ; Carry out ability parameter contrast according to SBC-REQ, the ability parameter that both sides are supported is included among the SBC-RSP clean culture and informs relaying RS1, and relaying RS1 resolves SBC-RSP; Thereby the ability parameter that should use in definite communication process afterwards mainly refers to the processing delay parameter here.

Through said process, the base station MR-BS 1 of multihop system just obtains the processing delay T1 of the relaying RS1 of its subordinate, makes the base station of multihop system before beginning MBS business, and MR-BS1 knows the processing delay of the relaying RS1 of its subordinate in advance.In like manner, MR-BS2 also can obtain the processing delay T2 of the relaying RS2 of its subordinate through said process.

102:MR-BS1 reports the MBS gateway with the processing delay T1 of the relaying RS1 that obtains, and MR-BS2 reports the MBS gateway with the processing delay T2 of the relaying RS2 that obtains.

Wherein, Obtain the processing delay T1 of the relaying RS1 of its subordinate at MR-BS1; After MR-BS2 obtains the processing delay T2 of the relaying RS2 of its subordinate, MR-BS1 and MR-BS2 respectively the mode general through returning Backhaul (back haul link) separately the processing delay of relaying report the MBS gateway.

Backhaul (back haul link) is meant the connection from access network or cell site to switching center.Switching center is connected to backbone network, and backbone network is connected to core network.Thereby the back haul link network is the intermediate layer of any telecommunications network architecture, and it for these two networks provide important connection, helps the service provider to reduce the cost of backhaul transport between access network and backbone network.In embodiments of the present invention, Backhaul is specially the connection from the base station MR-BS of multihop system to the MBS gateway.

The 103:MBS gateway is according to the processing delay T1 of the MR-BS1 that obtains and the processing delay T2 of MR-BS2; The processing delay collection that formation is made up of T1 and T2; The maximum of T max that selects processing delay to concentrate obtains MBS business transmitting time T according to Tmax and MBS gateway to the propagation delay time of base station.

Participate in table 1, the processing delay collection of forming by processing delay T1 and processing delay T2 in the embodiment of the invention.Wherein, if T1＜T2, then Tmax=T2; Otherwise, Tmax=T1 then.If T1 is 10 seconds, T2 is 8 seconds, so T1=Tmax.

Table 1

The base station MR-BS of multihop system	Processing delay
		MR-BS1	T1
MR-BS2	T2

Maximum of T max that the MBS gateway is concentrated with processing delay and MBS gateway are to the propagation delay time sum of base station; Minimum value as the professional transmitting time T of MBS; Be that the professional transmitting time T of MBS is at least Tmax and the MBS gateway propagation delay time sum to the base station; Could guarantee websites at different levels like this before beginning MBS business, all MBS packets have arrived websites at different levels, thereby guarantee that the MBS packet sends successfully.

The 104:MBS gateway issues the professional transmitting time T of MBS to MR-BS1 and MR-BS2 respectively.

105:MR-BS1 and MR-BS2 receive the professional transmitting time T of MBS, and send MBS packet and the professional transmitting time T of MBS to relaying RS1 and relaying RS2 respectively.

Wherein, after MR-BS1 receives the MBS business data packet, in advance packet is handed down to relaying RS1 according to the processing delay T1 of the relaying RS1 of its subordinate.Behind the T that MR-BS1 receives, issue and carry the professional transmitting time T of MBS when the MBS packet is given relaying RS1 simultaneously.Wherein, T can guarantee to make the MR-BS minizone can synchronized transmission MBS professional.For example, T is 10 seconds, and then to carry Tmax when the MBS packet is given relaying RS1 simultaneously be 10 seconds message issuing, and notice relaying RS1 sent the MBS packet and gives the user after 10 seconds.In like manner, after MR-BS2 receives T, issue and carry the professional transmitting time T of MBS when the MBS packet is given relaying RS2 simultaneously.

106: after relaying RS1 and relaying RS2 received the MBS packet respectively, when waiting until MBS business transmitting time T, the MBS packet of redispatching was given user separately.

Wherein, Because relaying RS1 is different with the disposal ability of relaying RS2, processing delay is different (processing delay of relaying RS1 is that the processing delay of T1, relaying RS 2 is T2) also, requires relaying RS1 and relaying RS2 when T, to send the MBS packet and gives the user; And T is greater than among T1 and the T2 any one; Had relaying to handle the MBS packet earlier before can appearing at T, this moment, this relaying need wait for a period of time, and waited the MBS packet of redispatching when arriving MBS business transmitting time T to give the user.For example:

The processing delay T1 that supposes relaying RS1 is 10 seconds, and the processing delay T2 of relaying RS2 is 8 seconds, and then Tmax is 10 seconds; Suppose that the MBS gateway is 2 seconds to the processing delay of base station, gets T=Tmax+2=12 second.Then 10 seconds the time, relaying RS2 has handled the MBS packet, and this moment, relaying RS1 did not also handle the MBS packet; Relaying RS2 need wait for 2 seconds; By the time T=12 sent the MBS packet simultaneously with relaying RS1 and gives the user during second, can guarantee to send the MBS packet like this and give the user success; Realize sending the MBS packet and given the synchronous of user, reached the effect of broadcast multi-broadcasting.

To sum up, on the synchronous basis of embodiment of the invention websites at different levels in guaranteeing each sub-district, through the MR-BS maximum processing delay is reported the MBS gateway; The MBS gateway arrives the propagation delay time of base station according to maximum processing delay and MBS gateway; Obtain the professional transmitting time of MBS and notify each MR-BS, considered the processing delay of each MR-BS comprehensively, guaranteed the transmission success of MBS business data packet; Realize sending the MBS packet and given the synchronous of user, reached the effect of broadcast multi-broadcasting.

Embodiment 2

The embodiment of the invention provides a kind of synchronous method of multicast/broadcast service (MBS) that realizes multihop system; The embodiment of the invention wherein, has a relaying branch road so that two MR-BS:MR-BS1 and MR-BS2 to be arranged under the MBS sub-district under the MR-BS1; And this relaying branch road comprises a relaying RS1; A relaying branch road is arranged under the MR-BS2, and to have two relaying RS2 and RS3 in this branch road be example, the method that the embodiment of the invention is provided is elaborated.

Referring to Fig. 4, MR-BS1 is connected the MBS gateway with MR-BS2, and connection relaying RS1 under the MR-BS1, relaying RS1 directly connect the user down; Connection relaying RS2 under the MR-BS2, connection relaying RS3 under the relaying RS2, relaying RS3 connect the user down.Referring to Fig. 5, its concrete realization flow is following:

201:MR-BS1 obtains the processing delay T1 of the relaying RS1 of its subordinate, and MR-BS2 obtains relaying RS2 and the total processing delay T2 of relaying RS3 in its subordinate's relaying branch road.Concrete implementation procedure is following:

The total processing delay T2 that obtains relaying RS2 of its subordinate and relaying RS3 with MR-BS2 is an example, describes:

At first; Relaying RS2 and relaying RS3 send SBC-REQ message to the base station MR-BS 2 of multihop system respectively; Carry the basic capacity parameter of relaying RS2 and relaying RS3 in the SBC-REQ message respectively; Comprise the processing delay t1 of relaying RS2 and the processing delay t2 of relaying RS3, then total processing delay T2=t1+t2 of the relaying branch road under the 3 jumping MR-BS2.

Secondly; After the base station MR-BS 2 of multihop system is received the SBC-REQ message of relaying RS2 and relaying RS3 respectively; Obtain the processing delay t2 in the SBC-REQ message of processing delay t1 and relaying RS3 in the SBC-REQ message of relaying RS2; And, return SBC-RSP message to relaying RS2 and relaying RS3 respectively according to the processing delay t1 and the t2 that obtain.

Through said process, 3 jump systems base station MR-BS 2 obtain the relaying RS2 and total processing delay T2 of relaying RS3 of its subordinate's relaying branch roads, make whole multihop system before beginning the MBS business, MR-BS2 knows the processing delay of its subordinate's relaying branch road in advance.MR-BS1 obtains the process of processing delay T1 of the relaying RS1 of its subordinate referring to embodiment 1, repeats no more here.

202:MR-BS1 reports the MBS gateway with the processing delay T1 of the relaying RS1 that obtains, and MR-BS2 reports the MBS gateway with the processing delay T2 of the relaying branch road that obtains.

Wherein, obtain the processing delay T1 of the relaying RS1 of its subordinate at MR-BS1, after MR-BS 2 obtained total processing delay T2 of its subordinate's relaying branch roads, MR-BS1 and MR-BS2 reported the MBS gateway through the mode general processing delay separately that returns Backhaul respectively.

The 203:MBS gateway is according to the processing delay T1 of the MR-BS1 that obtains and the processing delay T2 of MR-BS2; The processing delay collection that formation is made up of T1 and T2; The maximum of T max that selects processing delay to concentrate obtains MBS business transmitting time T according to Tmax and MBS gateway to the propagation delay time of base station.

Wherein, be relaying RS3 owing to what connect the user under the MR-BS2, thus professional as far as the MBS that realizes MR-BS2, be that relaying RS3 sends to the user with the MBS packet.

Participate in table 2, the processing delay collection of forming by processing delay T1 and processing delay T2 in the embodiment of the invention.Wherein, if T1＜T2, then Tmax=T2; Otherwise, Tmax=T1 then.If T1 is 10 seconds, t1 is 8 seconds, and t2 is 6 seconds, and then T2 is 8+4=14 second, so Tmax=T2=14 second.

Table 2

The 204:MBS gateway issues the professional transmitting time T of MBS to MR-BS1 and MR-BS2 respectively.

205:MR-BS1 and MR-BS2 receive the professional transmitting time T of MBS, and send MBS packet and MBS business transmitting time T to the relaying branch road of its subordinate respectively.

Wherein, behind the T that MR-BS1 receives, issue and carry the professional transmitting time T of MBS when the MBS packet is given relaying RS1 simultaneously; After MR-BS2 receives T, issue and carry the professional transmitting time T of MBS when the MBS packet is given relaying RS2 simultaneously; After relaying RS2 is received MBS packet and the professional transmitting time T of MBS, continue to issue the MBS packet and carry the professional transmitting time T of MBS simultaneously for relaying RS3.

206: after relaying RS1 and relaying RS3 receive the MBS packet respectively, wait when arriving MBS business transmitting time T, the MBS packet of redispatching is given the user.

Wherein, Because relaying RS1, relaying RS2 are different with the disposal ability of relaying RS3; Processing delay also different (processing delay of relaying RS1 is that the processing delay of T1, relaying RS2 is that the processing delay of t1, relaying RS3 is t2); Require relaying RS1 and relaying RS3 when T, to send the MBS packet to the user, and T is greater than among T1 and the T2 any one, can appear at T has had the relaying of MR-BS all to handle the MBS packet before; This moment, the relaying of this MR-BS need wait for a period of time, and the MBS packet of redispatching when waiting until T is given the user.For example:

The processing delay T1 that supposes the relaying RS1 of MR-BS1 is 10 seconds, and the processing delay t1 of the relaying RS2 of MR-BS2 is 8 seconds, and the processing delay t2 of the relaying RS3 of MR-BS2 is 6 seconds, and total processing delay T2 of MR-BS2 is 14 seconds, and then Tmax is 14 seconds.Suppose that the MBS gateway is 2 seconds to the propagation delay time of base station, gets T=Tmax+2=16 second.In the time of 10 seconds, the relaying RS2 of MR-BS2 has handled the MBS packet, and the MBS packet is carried T is handed down to relaying RS3, and relaying RS3 continues to handle the MBS packet; In the time of 12 seconds, the relaying RS1 of MR-BS1 has handled the MBS packet, but relaying RS3 does not also handle the MBS packet, and this moment, the relaying RS1 of MR-BS1 need wait for 4 seconds; By the time T=16 is during second; The relaying RS3 of MR-BS2 handles the MBS packet; Send the MBS packet and give the user, the relaying RS1 of MR-BS1 also sends the MBS packet and gives the user simultaneously, has so both guaranteed that each relaying sent the MBS packet and gives the user success; Realize sending the MBS packet again and given the synchronous of user, reached the effect of broadcast multi-broadcasting.

The processing delay T1 that supposes relaying RS1 under the MR-BS1 again is 10 seconds, and the processing delay t1 of relaying RS2 is 6 seconds under the MR-BS2, and the processing delay t2 of relaying RS 3 is 2 seconds under the MR-BS2, and total processing delay T2 of MR-BS2 is 8 seconds, and then Tmax is 10 seconds; Suppose that the MBS gateway is 2 seconds to the propagation delay time of base station, gets T=Tmax+2=12 second.In the time of 8 seconds, the relaying RS2 of MR-BS2 has handled the MBS packet, and relaying RS2 carries T with the MBS packet and is handed down to relaying RS3 at this moment; Wherein, only need 2 seconds because relaying RS2 knows the time of the relaying RS3 of its subordinate processing MBS packet in advance, and T is 12 seconds; Relaying RS2 can postpone a period of time MBS packet and T were handed down to relaying RS3 this moment; But the relaying RS 3 that must guarantee its subordinate during second, handles the MBS packet at T=12, and promptly retardation time can not be above 2 seconds; Could guarantee like this at T=12 during second that relaying RS3 can send the MBS packet and give the user.Certainly, relaying RS2 also can carry T with the MBS packet and be handed down to relaying RS3, and relaying RS3 handled the MBS packet in the time of 10 seconds, and T=12 is during second by the time, and the relaying RS1 with MR-BS1 sends the MBS packet to the user more at once.So both guaranteed that each relaying transmission MBS packet was successful to the user, and realized sending the MBS packet again and given the synchronous of user, reached the effect of broadcast multi-broadcasting.

Embodiment 1 is there to be two MR-BS under the MBS sub-district; It is example that the 2 jumping systems of a relaying RS are respectively arranged under each MR-BS, and the embodiment of the invention is there to be two MR-BS, wherein under the MBS sub-district; The 2 jumping systems that a relaying RS is arranged under MR-BS; A relaying branch road is arranged under another MR-BS, comprise in this relaying branch road that 3 jumping systems of two relayings are example, method of the present invention is elaborated.Those skilled in the art can be known; The method that the embodiment of the invention provides also is applicable to the situation that a plurality of (greater than two) MR-BS is arranged under the MBS sub-district, promptly a plurality of MR-BS report the MBS gateway with maximum processing delay separately; Maximum processing delay that the MBS gateway reports according to a plurality of MR-BS and MBS gateway obtain the professional transmitting time of MBS to the propagation delay time of base station; And notify each MR-BS under the MBS sub-district, and consider the processing delay of a plurality of MR-BS comprehensively, realized the synchronous of MBS business.Further; The method that the embodiment of the invention provides; Also be applicable to the situation that has certain MR-BS directly to connect the user down among a plurality of MR-BS of MBS sub-district, when this moment, this MR-BS need wait until the professional transmitting time T of MBS, send the MBS packet simultaneously to the user with other MR-BS.

The method that the embodiment of the invention provides; Also be applicable to and comprise many relaying branch roads under the MR-BS; And every relaying branch road has the situation of a plurality of relayings, after this moment, this MR-BS obtained the processing delay of every relaying branch road of its subordinate, selects the processing delay of the maximum relaying branch road of processing delay to report the MBS gateway; When each relaying branch road is waited until T, send the MBS packet and give the user; In addition, for not only having connected relaying RS under certain MR-BS but also having connected user's situation, when this moment, this MR-BS also must wait until T (being MBS business transmitting time), the relaying RS that could be connected the user with other sent the MBS packet together to the user; In like manner can know; For not only having connected the relaying RS of subordinate under certain the relaying RS under the MR-BS but also having connected user's situation; This relaying RS is handed down to the relaying RS of its subordinate with MBS packet and T after handling the MBS packet; By the time during T (be MBS professional transmitting time), the relaying RS that connects the user with its subordinate sends the MBS packet and gives the user, thus realized MBS professional synchronously.

To sum up, on the synchronous basis of embodiment of the invention websites at different levels in guaranteeing each MR-BS sub-district, through each MR-BS maximum processing delay is reported the MBS gateway; The MBS gateway obtains the professional transmitting time of MBS according to maximum processing delay and MBS gateway to the propagation delay time of base station; And notify each MR-BS, and considered the processing delay of each MR-BS comprehensively, guaranteed the transmission success of MBS business data packet; Realize sending the MBS packet and given the synchronous of user, reached the effect of broadcast multi-broadcasting.

Embodiment 3

The embodiment of the invention provides a kind of synchronous system of multicast/broadcast service (MBS) that realizes multihop system, and referring to Fig. 6, system comprises: MBS gateway, base station and relaying branch road; Wherein, the base station is a plurality of;

The base station is used to obtain the maximum processing delay of sub-district separately; The maximum processing delay of obtaining is reported the MBS gateway; Receive the professional transmitting time of MBS that the MBS gateway issues; According to the professional transmitting time of MBS, send the MBS business data packet and give the relaying branch road;

The relaying branch road is used to receive the MBS business data packet and the professional transmitting time of MBS of sending the base station; According to the professional transmitting time of MBS, send the MBS business data packet to the user.

Further, have at least one relaying in the said relaying branch road, wherein,

Said relaying branch road specifically is used for the processing delay according to professional transmitting time of said MBS and said relaying branch road relaying, obtains said relaying and sends the time that the MBS business data packet need be waited for to the user; According to the time that the said needs that obtain are waited for, send the MBS business data packet to the user.

To sum up; On the synchronous basis of embodiment of the invention websites at different levels in guaranteeing each MR-BS sub-district, consider the time delay of each MR-BS comprehensively, guaranteed the transmission success of MBS business data packet; Realize sending the MBS packet and given the synchronous of user, reached the effect of broadcast multi-broadcasting.

Embodiment 4

The embodiment of the invention provides a kind of MBS gateway device, and referring to Fig. 7, the MBS gateway device comprises: determination module with issue module, wherein,

Said determination module is used to receive the maximum processing delay that each base station reports; Maximum processing delay according to each base station reports forms a time delay collection; Obtain the maximum that said time delay is concentrated; According to the said maximum of obtaining and MBS gateway propagation delay time, obtain the professional transmitting time of MBS to the base station;

The said module that issues, the professional transmitting time of MBS that is used for said determination module is obtained is handed down to said base station.

Embodiment 5

The embodiment of the invention provides a kind of base station, and referring to Fig. 8, the base station comprises: acquisition module, reporting module, receiver module and processing module, wherein,

Said acquisition module is used to obtain the maximum processing delay of sub-district;

Said reporting module is used for the maximum processing delay that said acquisition module obtains is reported said MBS gateway;

Said receiver module is used to receive the professional transmitting time of MBS that module issues that issues of said MBS gateway; Wherein,

The professional transmitting time of said MBS maximum processing delay that to be said MBS gateway report according to each base station and MBS gateway obtain to the propagation delay time of base station;

Said processing module is used for the professional transmitting time according to the said MBS of said receiver module reception, sends said MBS business data packet and gives the relaying branch road.

Further, acquisition module comprises acquiring unit, wherein,

Said acquiring unit is used to obtain the processing delay of each relaying branch road under the sub-district; According to the processing delay of said each relaying branch road, obtain the maximum in the processing delay, obtain the maximum processing delay of said sub-district.

Further, said reporting module comprises and reports the unit, wherein,

The said unit that reports reports the MBS gateway through returning back haul link with the said maximum processing delay of obtaining.

Embodiment 6

The embodiment of the invention provides a kind of relaying, and referring to Fig. 9, said relaying comprises: reporting module, acquisition module and sending module, wherein,

Sending module according to the professional transmitting time of MBS, sends the MBS business data packet to the user.

Further, there is at least one relaying between base station and the user, wherein,

Obtain module and also be used for processing delay, obtain relaying and send the time that the MBS business data packet need be waited for to the user according to professional transmitting time of MBS and relaying;

Correspondingly,

Sending module also is used for sending the MBS business data packet according to obtaining the time that needs that module obtains are waited for to the user.

It is pointed out that the time that each relaying need be waited in a relaying branch road possibly be inequality, and refer to and receive that the MBS packet carries out the packet of redispatching after the wait of certain hour the time of need waiting among the embodiment.For example, when a relaying branch road has three relaying RS1, RS2 and RS3, processing delay is respectively t1, t2 and t3; Suppose that the MBS gateway is Td to the propagation delay time of base station; The professional transmitting time of MBS is T, and the time that need wait for of RS1 is T-Td-t1 so, and the time that RS2 need wait for possibly be T-Td-t1-t2; All last relayings that interrupts branch road also can come as required to set artificially the different stand-by period, so that can send the MBS packet simultaneously.

One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.

More than be merely preferred embodiment of the present invention, or not all within spirit of the present invention and principle in order to restriction the present invention, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. synchronous method of multicast/broadcast service (MBS) that realizes multihop system is characterized in that in the multihop system of a plurality of sub-districts, said method comprises:

The said maximum processing delay of obtaining is reported the MBS gateway;

According to the professional transmitting time of said MBS, each the relaying branch road to said base station sends said MBS business data packet;

The professional transmitting time of said MBS maximum processing delay that to be said MBS gateway report according to each base station and MBS gateway obtain to the propagation delay time of base station, specifically comprise:

Select said time delay to concentrate the maximum in the maximum processing delay that each base station reports;

Maximum, MBS gateway to said time delay is concentrated are sued for peace to the propagation delay time of base station;

The maximum that said time delay is concentrated, MBS gateway arrive the minimum value of the propagation delay time sum of base station as the professional transmitting time of MBS.

2. the method for claim 1 is characterized in that, the maximum processing delay that the base station of said each sub-district obtains the sub-district comprises:

Said base station obtains the processing delay of each relaying branch road under the sub-district separately;

According to the processing delay of said each relaying branch road, obtain the processing delay of the maximum relaying branch road of processing delay, obtain the maximum processing delay of said sub-district.

3. method as claimed in claim 2 is characterized in that, when having a plurality of relaying in the said relaying branch road, said base station obtains the step of each relaying branch road processing delay under the sub-district separately, comprising:

Said base station obtains the basic capacity request message that each relaying sends in the said relaying branch road;

According to the basic capacity request message that each relaying in the said relaying branch road sends, obtain the processing delay of said each relaying;

According to the processing delay of said each relaying, obtain the processing delay of said relaying branch road.

4. the method for claim 1 is characterized in that, the said maximum processing delay that said each base station is obtained reports the MBS gateway, is specially:

Said each base station reports the MBS gateway through returning back haul link with the maximum processing delay of obtaining separately.

5. synchronous method of multicast/broadcast service (MBS) that realizes multihop system is characterized in that in the multihop system of a plurality of sub-districts, said method comprises:

Each relaying on each relaying branch road of base station reports said base station with self processing delay;

Said relaying obtains professional transmitting time of MBS and MBS business data packet; Wherein, the maximum processing delay of the professional transmitting time of said MBS each relaying branch road that to be the MBS gateway report according to each base station and said MBS gateway obtain to the propagation delay time of base station;

Said relaying sends said MBS business data packet according to the professional transmitting time of said MBS and self processing delay to the user;

The maximum processing delay of the professional transmitting time of said MBS each relaying branch road that to be the MBS gateway report according to each base station and said MBS gateway obtain to the propagation delay time of base station, specifically comprise:

Select said time delay to concentrate the maximum in the maximum processing delay of each relaying branch road that each base station reports;

6. method as claimed in claim 5 is characterized in that, in said relaying branch road, has at least one relaying, saidly sends said MBS business data packet to the user, comprising:

Processing delay according to the relaying in the professional transmitting time of said MBS, the said relaying branch road obtains said relaying and sends the time that the MBS business data packet need be waited for to the user;

The time that said relaying is waited for according to the said needs that obtain, send the MBS business data packet to the user.

7. the synchronous system of multicast/broadcast service (MBS) that realizes multihop system is characterized in that said system comprises: MBS gateway, base station and relaying branch road; Wherein, said base station is a plurality of;

Said MBS gateway is used to receive the maximum processing delay that each base station reports; Maximum processing delay that reports according to each base station and MBS gateway obtain the professional transmitting time of MBS to the propagation delay time of base station; The professional transmitting time of said MBS is handed down to each base station;

Said base station is used to obtain the maximum processing delay of sub-district; The said maximum processing delay of obtaining is reported said MBS gateway; Receive the professional transmitting time of MBS that said MBS gateway issues; According to the professional transmitting time of said MBS, send said MBS business data packet and give the relaying branch road;

Said relaying branch road is used to receive the MBS business data packet and the professional transmitting time of MBS of sending said base station; According to the professional transmitting time of said MBS, send said MBS business data packet to the user;

8. system as claimed in claim 7 is characterized in that, has at least one relaying in the said relaying branch road, wherein,

9. a MBS gateway is characterized in that, said MBS gateway comprises: determination module with issue module, wherein,

The said module that issues, the professional transmitting time of MBS that is used for said determination module is obtained is handed down to said base station;

According to the said maximum of obtaining and MBS gateway propagation delay time to the base station, obtain the professional transmitting time of MBS, specifically comprise:

10. a base station is characterized in that, said base station comprises: acquisition module, reporting module, receiver module and processing module, wherein,

Said receiver module is used to receive the professional transmitting time of MBS that module issues that issues of said MBS gateway; Wherein, the professional transmitting time of said MBS maximum processing delay that to be said MBS gateway report according to each base station and MBS gateway obtain to the propagation delay time of base station;

Said processing module is used for the professional transmitting time according to the said MBS of said receiver module reception, sends said MBS business data packet and gives the relaying branch road;

11. base station as claimed in claim 10 is characterized in that, said acquisition module comprises acquiring unit, wherein,

12. base station as claimed in claim 10 is characterized in that, said reporting module comprises and reports the unit, wherein,

13. a relaying is characterized in that, said relaying comprises: reporting module, acquisition module and sending module, wherein,

Said reporting module is used for self processing delay is reported the base station;

Said acquisition module; Be used to receive the MBS business data packet and the professional transmitting time of said MBS of sending said base station; Wherein, the maximum processing delay of the professional transmitting time of said MBS each relaying branch road that to be the MBS gateway report according to each base station and said MBS gateway obtain to the propagation delay time of said base station;

Said sending module according to the professional transmitting time of said MBS, sends said MBS business data packet to the user;

The maximum processing delay of the professional transmitting time of said MBS each relaying branch road that to be the MBS gateway report according to each base station and said MBS gateway obtain to the propagation delay time of said base station, specifically comprise:

14. relaying as claimed in claim 13 is characterized in that, has at least one relaying between said base station and the user, wherein,

Said acquisition module also is used for the processing delay according to professional transmitting time of said MBS and relaying, obtains said relaying and sends the time that the MBS business data packet need be waited for to the user;

Correspondingly,

The time that the needs that said sending module also is used for obtaining according to said acquisition module are waited for, send the MBS business data packet to the user.