CN100421507C - Business control information transmitting method in multimedia broadcasting/group broadcasting service - Google Patents
Business control information transmitting method in multimedia broadcasting/group broadcasting service Download PDFInfo
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- CN100421507C CN100421507C CNB2004100927396A CN200410092739A CN100421507C CN 100421507 C CN100421507 C CN 100421507C CN B2004100927396 A CNB2004100927396 A CN B2004100927396A CN 200410092739 A CN200410092739 A CN 200410092739A CN 100421507 C CN100421507 C CN 100421507C
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Abstract
The present invention discloses a method for transmitting service control information in multimedia broadcasting/multicasting services (MBMS), which comprises the following procedures: a. a universal terrestrial radio access network (UTRAN) obtains the service control information of all the current MBMS services from a core network (CN); B. the UTRAN selects the service control information of a part of the services from the service control information and issues the service control information of a part of the services in a modification cycle of a service control channel MCCH of the MBMS until all the service control information required to be transmitted is selected to be issued to the UE. By applying the method for transmitting service control information in multimedia broadcasting/multicasting services of the present invention, the MCCH channel can accurately transmit all the control information of the MBMS regardless of how many the multimedia broadcasting/multicasting services are, and thereby, the present invention can meet the requirement that all the services are arranged in a cell.
Description
Technical field
The present invention relates to the professional information transmission technology of multi-medium broadcast/group broadcast (MBMS), the transmission method of business control information in particularly a kind of multimedia broadcast/group broadcast service.
Background technology
Multicast and broadcasting are a kind of technology that transmits data from a data source to a plurality of targets.In traditional mobile network, cell broadcaste service (CBS:Cell Broadcast Service) allows low bit rate data to share broadcast channel to all users' transmissions by the sub-district, belongs to information series business.
Now, people no longer are satisfied with phone and messaging service to the demand of mobile communication, fast development along with Internet, a large amount of multimedia services emerge, the some of them applied business requires a plurality of users can receive identical data simultaneously, as video request program, television broadcasting, video conference, online education, interactive game etc.These mobile multi-media services are compared with general data, have characteristics such as data volume is big, longer duration, delay sensitive.Present IP multicasting technology only is applicable to wired IP network, is not suitable for the mobile network, because the mobile network has particular network structure, functional entity and wave point, these are all different with wired IP network.
In order to effectively utilize mobile network resource, the WCDMA/GSM global standardsization organize 3GPP to propose multimedia broadcast/multicast service (MBMS:Multimedia Broadcast/Multicast Service), in the mobile network, provide a data source to send the point-to-multipoint service of data to a plurality of users, the realization Internet resources are shared, improve utilization rate of network resource, the utilance of the interface resource of especially eating dishes without rice or wine.The MBMS of 3GPP definition can not only realize the classes of messages multicast and the broadcasting of plain text low rate, and can also realize the multicast and the broadcasting of high-speed multimedia business, and this has complied with the trend of following mobile data development undoubtedly.
In order to support the MBMS business, increased mobile network functional entity---broadcast multicast service center BM-SC among the mobile network newly, it is content provider's a inlet, be used for authorizing and initiating the MBMS bearer service at mobile network, and plan transmits the MBMS content to schedule.In addition, functional entitys such as subscriber equipment (UE), land radio access web (UTRAN), GERAN, SGSN, GGSN strengthen, and have increased the relevant function of MBMS.
Such network configuration is referring to Fig. 1, and Fig. 1 is for supporting the wireless network architecture schematic diagram of multicast/broadcast business.Wherein, broadcast/multicast service center (BM-SC) is passed through Gmb interface or Gi interface and gateway general packet radio service (GPRS) support node (GGSN, Gateway GPRS SupportNode) and is linked to each other, and a BM-SC can link to each other with a plurality of GGSN; GGSN links to each other by Gn/Gp interface and Serving GPRS Support Node (SGSN, Serving GPRS Support Node), and a GGSN can link to each other with a plurality of SGSN; SGSN can link to each other with universal mobile telecommunications system (UMTS) land radio access web (UTRAN) by the Iu interface, UTRAN links to each other with communication terminal by the Uu interface then, SGSN also can strengthen wireless access network (GERAN) by Iu/Gb interface and global system for mobile communications (GSM) and link to each other, and GERAN links to each other with communication terminal by Um Interface then.
MBMS comprises multicast pattern and broadcast mode.The distinctive points of multicast service and broadcasting service only is: multicast service only sends corresponding information to the user who has subscribed to some information, and the broadcasting service then user of all in wireless network sends information.Multicast pattern needs user's corresponding multicast group of contracting, and carries out activation of service, and produces corresponding charge information.Because it is different that multicast and broadcast mode exist, cause also difference of its operation flow on business demand.
The MBMS business has two kinds of patterns when transmitting between UTRAN and UE: put multiple spot (PTM) pattern and point-to-point (PTP) pattern.The PTM pattern sends identical data by MBMS point-to-multipoint service channel (MTCH), and all add multicast service or can receive the interested UE of broadcasting service; Ptp mode sends data by dedicated transmission channel (DTCH), has only a corresponding UE to receive.
The user receives the entire flow of certain MBMS broadcasting service referring to Fig. 2, as shown in Figure 2, this flow process comprises: service statement (Service announcement), session begin (Session Start), MBMS notice (MBMS notification), transfer of data (Data transfer), conversation end (Session Stop) process.
Wherein, Service announcement process is used for by the current service that can provide of BM-SC declaration.
In the Session Start process, BM-SC is ready to transfer of data, and informing network is set up the bearing resource of corresponding core net (CN) and universal land radio access web (UTRAN).
MBMS notification process is used to notify UE MBMS multicast conversation to be about to begin.
In the Data transfer process, BM-SC transfers data to UE by the bearing resource that session begins to set up in the process.
The bearing resource that Session Stop process is used for Session Start process is set up discharges.
In broadcasting service, all preserve the bearer context of this MBMS business in each MBMS service node, this bearer context is activated in Session Start process, in Session Stop process by deexcitation.
The user receives the entire flow of certain MBMS multicast service referring to Fig. 3, as shown in Figure 3, this flow process comprises: subscription (Subscription), service statement (Service announcement), adding (Joining), session begin (Session Start), MBMS notice (MBMS notification), transfer of data (Data transfer), conversation end (Session Stop) and leave (Leaving) process.
Wherein, the Subscription process is used for allowing the user subscribe to required MBMS service in advance.
Service announcement process is used for by the current service that can provide of BM-SC declaration.
The Joining process is a MBMS activating multicast service process, UE is in the Joining process, informing network self is ready to become the member of current multicast group, receive corresponding professional multicast packet, this Joining process can be created the MBMS UE context of record UE information in the UE of network and adding multicast group.
In the Session Start process, BM-SC is ready to transfer of data, and informing network is set up the bearing resource of corresponding CN and UTRAN.
MBMS notification process is used to notify UE MBMS multicast conversation to be about to begin.
In the Data transfer process, BM-SC transfers data to UE by the bearing resource that session begins to set up in the process.
The bearing resource that Session Stop process is used for Session Start process is set up discharges.
The Leaving process makes the subscriber in the group leave multicast group, i.e. user's receiving multicast data no longer, and this process can be with corresponding MBMS UE context deletion.
Network side comprises following two steps to the process that UE sends the business control information of MBMS:
1, the base station controller of UTRAN (BSC) or radio network controller (RNC) have wherein comprised service attribute and phase related control informations such as each professional service identification, QoS attribute, professional perdurabgility, Service coverage, professional urgency level from the indication of core net (CN) a plurality of MBMS service conversations of acquisition (Session Start).
Like this, begin after flow process finishes in the session of each broadcasting or multicast service, UTRAN just obtained should business business control information.This moment, UTRAN just provided one or more MBMS business in the sub-district.
2, then, UTRAN sends to above-mentioned MBMS business control information and receives this professional UE, the business datum that makes the correct reception of UE.
The UTRAN phase related control information that all are professional transmits on the RRC of MCCH channel bearing message.In the MBMS business, except by going up transmission in Broadcast Control Channel (BCCH) about the limited control information such as the configuration information of access information, the professional control of MBMS (MCCH) channel of etc.ing, most of Radio Resources are controlled (RRC) message all in the MCCH channel.
MCCH information is periodically to send, and UTRAN can repeat to send MCCH information to improve stability.The MCCH message scheduling is consistent for all business.
Referring to Fig. 4, Fig. 4 is a MCCH message scheduling cycle schematic diagram.Whole M CCH information transmitted periodically based on " repetition period "." modification cycle " is defined as the integral multiple of " repetition period ".MBMS AccessInformation transmitted periodically based on " access information cycle "." repetition period " is again the integral multiple in " access information cycle " simultaneously.
The RRC message of the last carrying of MCCH mainly comprises: MBMS access information (MBMS AccessInformation), MBMS revises business information (MBMS Modified Services Information), the public point to multi-point wireless beared information of MBMS (MBMS common PTM RB information), the professional point to multi-point wireless beared information (MBMS service PTM RB information) of MBMS, non-modification business information of MBMS (MBMS Unmodified Services Information) or the like.
Wherein, information such as MBMS Modified Services Information, MBMS common PTM RBinformation are that key message key message in a modification cycle is immovable, access informations such as MBMS Access Information then are to change at any time, and change information shown in Fig. 4 is exactly an access information.
Because it is periodically that MCCH goes up message transmission, common way is that the information such as RRC with all MBMS business sent in a modification cycle, for the meaning that guarantees to retransmit, can not constantly increase the length in the modification cycle of MCCH transmission, this just means that also MCCH information transmitted content is limited.
But the MBMS business is a kind of emerging business, and the number of services of imagining at present that can transmit is just quite a lot of, and along with the development of MBMS, increasing type of service will certainly occur.Therefore, the business of transmission also may be very many simultaneously in sub-district.Can information transmitted be limited on the modification cycle of MCCH channel, and business is in continuous growth, these professional control informations all need send on a modification cycle of MCCH channel mostly.Therefore a contradiction will appear here, the contradiction between the type of service of promptly limited transmission space and constantly expansion.
Summary of the invention
In view of this, main purpose of the present invention is to provide the transmission method of business control information in a kind of multimedia broadcast/group broadcast service, uses this method, and no matter how many kinds of MBMS business is arranged, and the MCCH channel can both send the control information of all MBMS business exactly.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
The transmission method of business control information in a kind of multi-medium broadcast/group broadcast MBMS business, this method may further comprise the steps:
A, general land Access Network UTRAN obtain the business control information of current all MBMS business from core net CN;
B, UTRAN are from above-mentioned business control information, the business control information of selection portion separate service issued in a MBMS business control channel MCCH modification cycle, if also have the business control information of non-selected transmission, the business control information of selection portion separate service issued in another MCCH modification cycle, up to the selected user equipment (UE) that is handed down to of all business control informations that need transmit.
In the described steps A, be the business control information that obtains current all MBMS business by the base station controller BSC of UTRAN or radio network controller (RNC) from core net CN.
The business control information of described current all MBMS business can comprise: after UTRAN receives that the session of CN transmission begins indication, and the business control information of the MBMS business that will transmit; Business control information with the renewal of the current MBMS business of transmitting.
The method of the described selection portion separate service of step B control information can be the business control information of selecting a kind of business.Can select at random or/and select a kind of business control information of business according to the service attribute of miscellaneous service.Preferentially selection can be selected to merge or the business control information of the business of soft merging.
Wherein, the described method of selecting according to the service attribute of miscellaneous service can for:
Select according to any one or multiple attribute in the QoS attribute of miscellaneous service, professional perdurabgility, Service coverage, the urgency level.
Under the identical situation of the attribute of described miscellaneous service, can divide into groups and definite group transmitting sequence to described business control information;
The method of the described selection portion separate service of step B control information is: the business control information of selecting one group of business according to the group transmitting sequence;
The issuing service control information takes a step forward and comprises among the described step B: will organize transmitting sequence and be notified to UE.
Described step B may further include: UTRAN divides into groups described business control information and determines the group transmitting sequence;
The method of the described selection portion separate service of step B control information is: the business control information of selecting one group of business according to the group transmitting sequence;
The issuing service control information takes a step forward and comprises among the described step B: will organize transmitting sequence and be notified to UE.
The described method that business control information is divided into groups can for: for service identification or terminal mobile group designation TMGI or the NSAPI or the Transaction Identifier (TI) of current MBMS business, use Hash Hashing algorithm to divide into groups.
The method of described definite group of transmitting sequence can for: randomly ordered group is defined as order, or the group number order is defined as organizing transmitting sequence.
As seen from the above technical solutions, the transmission method of business control information in this multimedia broadcast/group broadcast service of the present invention, the business control information of selection portion separate service is transferred to UE all MBMS business that provide in the sub-district in the MCCH different cycles.Like this, UTRAN can needn't be issued all professional control informations, but issue respectively in the difference modification cycle selectively when the control information of a plurality of MBMS business of transmission in a modification cycle.So no matter how many kinds of MBMS business is arranged, the MCCH channel can both send the control information of all MBMS business exactly, provides all professional requirements in the sub-district thereby can satisfy.
Description of drawings
Fig. 1 is for supporting the wireless network architecture schematic diagram of multicast/broadcast business;
Fig. 2 receives the entire flow of certain MBMS broadcasting service for the user;
Fig. 3 receives the entire flow of certain MBMS multicast service for the user;
Fig. 4 is a MCCH message scheduling cycle schematic diagram;
Fig. 5 is the process chart of first preferred embodiment of the transmission method of business control information in the multimedia broadcast/group broadcast service of the present invention;
Fig. 6 is the process chart of second preferred embodiment of the transmission method of business control information in the multimedia broadcast/group broadcast service of the present invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to accompanying drawing and for two example two, the present invention is described in more detail.
The transmission method of business control information in this multimedia broadcast/group broadcast service of the present invention is that the control information of selection portion separate service is transferred to UE all MBMS business that provide in the sub-district in the MCCH different cycles.
The present invention has two kinds of implementations in the practical application:
First kind of mode is to select a kind of business control information of business to be transferred to UE all MBMS business that provide in the sub-district in the MCCH different cycles.
The second way is that the business control information of one group of business is provided all MBMS business that provide in the sub-district, is transferred to UE in the MCCH different cycles.
Below above-mentioned dual mode is described for an embodiment respectively.
Referring to Fig. 5, Fig. 5 for the transmission method of business control information in the multimedia broadcast/group broadcast service of the present invention the process chart of first preferred embodiment.This flow process is first kind of implementation, and it may further comprise the steps:
Step 501, the BSC of UTRAN or RNC obtain the business control information of current all MBMS business from CN.The method that obtains is same as the prior art, repeats no more here.
In this enforcement, the business control information of current all MBMS business comprises: after UTRAN receives that the session of CN transmission begins indication, and the business control information of the MBMS business that will transmit; Business control information with the renewal of the current MBMS business of transmitting.
Step 502, UTRAN selects a kind of business control information of business from above-mentioned business control information.
Step 503, the business control information of this kind business that UTRAN will select in a MCCH modification cycle sends to UE.
Step 504 judges whether to also have the business control information of non-selected transmission, if having then return step 502, selects a kind of business control information of business down; Otherwise finish this and issue flow process.
In the present embodiment, select business control information method can for: select at random or/and according to QoS attribute, perdurabgility, Service coverage or the urgency level of miscellaneous service or do not select to merge or the like any one or the multiple business attribute is selected.
For example: can select control information earlier, select the control information of the low relatively business of qos requirement in the RRC of MCCH channel message, to arrange to issue again to the high relatively business of qos requirement;
Select the control information of short business perdurabgility earlier, select the control information of long business perdurabgility in the RRC of MCCH channel message, to arrange to issue again;
Select the control information of the big business of Service coverage earlier, select the control information of the little business of Service coverage in the RRC of MCCH channel message, to arrange to issue again;
Select earlier urgent relatively business such as in the streaming media service, the phase related control information of burst news selects relatively not urgent business to arrange to issue in the RRC of MCCH channel message again.
In addition, under the identical situation of the attribute of above-mentioned miscellaneous service, can divide into groups and determine the group transmitting sequence, can also select at random or other sort method is finished professional selection described business control information; To organize transmitting sequence and be notified to UE, and select the business control information of one group of business to issue according to the group transmitting sequence then.
That is to say and a kind of control information of business can be issued in a modification cycle, also can be according to circumstances, with the business control information grouping, the control information of one group of business was issued in a modification cycle.The detailed process that group issues is identical with second preferred embodiment.
Also have, because the UE that has is in the edge of sub-district, may carry out and select to merge or soft merging, if at this moment preferentially do not issue the MBMS business control information of this UE, the MBMS of this UE is professional may to interrupt because of in time not receiving the MBMS business control information, therefore in the present embodiment, further preferential selection can be selected to merge or the business control information of the business of soft merging.
Referring to Fig. 6, Fig. 6 is the process chart of second preferred embodiment of the transmission method of business control information in the multimedia broadcast/group broadcast service of the present invention.This flow process is second kind of implementation, and it may further comprise the steps:
In this enforcement, the business control information of current all MBMS business comprises: after UTRAN receives that the session of CN transmission begins indication, and the business control information of the MBMS business that will transmit; Business control information with the current MBMS business of transmitting.
Step 602 for the service identification of current business, uses the Hashing algorithm that current business is divided into groups.The Hashing algorithm is the technological means of dividing into groups in the communications field, repeats no more here.
Except the service identification that uses in the present embodiment, can also be in the practical application to waiting other service identifications with the TMGI of current business or NSAPI or Transaction Identifier (TI), use Hash Hashing algorithm to divide into groups and organize ordering.
Wherein, TMGI is that UTRAN begins to obtain in the process in session, and NSAPI, TI obtain in the UELINKING process, and the method for acquisition is same as the prior art, repeats no more here.
Step 603 is determined the transmitting sequence of grouping, and notifies UE.In the present embodiment, the transmitting sequence that can randomly ordered result is defined as dividing into groups, the also transmitting sequence that the order of group number can be defined as dividing into groups.
Step 604 is selected 1 group of business control information by the transmitting sequence of grouping.
In the present embodiment, business control information is that the selective sequential by group number issues, that is: first MCCH revises and passes the 1st service groups in cycle, and second period passes the 2nd service groups or the like.
Step 606 judges whether to also have the business control information of non-selected transmission, if having then return step 604, selects the professional business control information of next group; Otherwise finish this and issue flow process.
During practical application, can be at the method described in the foregoing description, when the MBMS that UTRAN transmits on selecting MCCH is professional, can be according to several mode combination in any of above two embodiment as a unified service selecting method.
By the above embodiments as seen, use the transmission method of business control information in this multimedia broadcast/group broadcast service of the present invention, no matter how many kinds of MBMS business is arranged, the MCCH channel can both send the control information of all MBMS business exactly, provides all professional requirements in the sub-district thereby can satisfy.
Claims (11)
1. the transmission method of business control information in the multi-medium broadcast/group broadcast MBMS business is characterized in that this method may further comprise the steps:
A, general land Access Network UTRAN obtain the business control information of current all MBMS business from core net CN;
B, UTRAN are from above-mentioned business control information, the business control information of selection portion separate service issued in a MBMS business control channel MCCH modification cycle, if also have the business control information of non-selected transmission, the business control information of selection portion separate service issued in another MCCH modification cycle, up to the selected user equipment (UE) that is handed down to of all business control informations that need transmit.
2. transmission method as claimed in claim 1 is characterized in that: in the described steps A, be the business control information that is obtained current all MBMS business by the base station controller BSC of UTRAN or radio network controller (RNC) from core net CN.
3. transmission method as claimed in claim 1 or 2 is characterized in that, the business control information of described current all MBMS business comprises: after UTRAN receives that the session of CN transmission begins indication, and the business control information of the MBMS business that will transmit; Business control information with the renewal of the current MBMS business of transmitting.
4. transmission method as claimed in claim 1 is characterized in that, the method for the described selection portion separate service of step B control information is: the business control information of selecting a kind of business.
5. transmission method as claimed in claim 4 is characterized in that: select or/and select a kind of business control information of business according to the service attribute of miscellaneous service at random.
6. transmission method as claimed in claim 5 is characterized in that: preferential selection can be selected to merge or the business control information of the business of soft merging.
7. transmission method as claimed in claim 6 is characterized in that, the described method of selecting according to the service attribute of miscellaneous service is:
Select according to any one or multiple attribute in the QoS attribute of miscellaneous service, professional perdurabgility, Service coverage, the urgency level.
8. transmission method as claimed in claim 7 is characterized in that, under the identical situation of the attribute of described miscellaneous service, described business control information is divided into groups and definite group transmitting sequence;
The method of the described selection portion separate service of step B control information is: the business control information of selecting one group of business according to the group transmitting sequence;
The issuing service control information takes a step forward and comprises among the described step B: will organize transmitting sequence and be notified to UE.
9. transmission method as claimed in claim 1 is characterized in that, described step B further comprises: UTRAN divides into groups described business control information and determines the group transmitting sequence;
The method of the described selection portion separate service of step B control information is: the business control information of selecting one group of business according to the group transmitting sequence;
The issuing service control information takes a step forward and comprises among the described step B: will organize transmitting sequence and be notified to UE.
10. transmission method as claimed in claim 8 or 9, it is characterized in that, the described method that business control information is divided into groups is: for service identification or terminal mobile group designation TMGI or the NSAPI or the Transaction Identifier (TI) of current MBMS business, use Hash Hashing algorithm to divide into groups.
11. transmission method is characterized in that as claimed in claim 8 or 9, the method for described definite group of transmitting sequence is: randomly ordered group is defined as order, or the group number order is defined as organizing transmitting sequence.
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| BRPI0812842B1 (en) * | 2007-07-05 | 2020-02-27 | Wing Win Consulting Limited | MOBILE COMMUNICATIONS SYSTEM |
| CN101370238B (en) * | 2007-08-15 | 2012-08-22 | 上海贝尔股份有限公司 | MCCH transmitting/receiving method and device based on LTE |
| WO2010025685A1 (en) * | 2008-09-04 | 2010-03-11 | 北京泰美世纪科技有限公司 | Device and method for transmitting multicast and broadcast services in wireless communication system |
| CN101742572B (en) | 2008-11-07 | 2016-03-30 | 中兴通讯股份有限公司 | The transmission method of schedule information and device |
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