CN101222685A - Method for establishing multimedia broadcast multicast service conversation - Google Patents
Method for establishing multimedia broadcast multicast service conversation Download PDFInfo
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Abstract
The invention discloses a method for establishing a multimedia broadcast multicast service conversation, which comprises the following steps: before beginning the multimedia broadcast multicast service conversation, a counter and a timer corresponding to the conversation are added for a broadcast multicast service center; a counter corresponding to each access gateway is added; the broadcast multicast service center sends a message of a request to begin conversation to the corresponding access gateway; the timer is started; the corresponding access gateway respectively sends the message of the request to begin conversation to each base station which is connected to the access gateway and needs service; the base station establishes wireless resource needed for data transmission for a user who is interested in corresponding services; the base station sends a responding message of the multimedia broadcast multicast service conversation beginning; the timer of the corresponding to the access gateway adds 1; the access gateway sends the responding message of the multimedia broadcast multicast service conversation beginning to the broadcast multicast service center; the timer of the broadcast multicast service center adds 1.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to the method that a kind of multimedia broadcast multicast service conversation is set up.
Background technology
Multicast and broadcasting are a kind of technology that transmits data message 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 content just to phone and messaging service to the demand of mobile communication, fast development along with Internet, a large amount of multimedia services swarm forward, 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.And 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 (3rdGenerat ion Partnership Project) 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 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.
As newly-increased mobile network functional entity, broadcast multicast service center (BroadcastMulticast-service center, be called for short BM-SC) be content of multimedia supplier's inlet, be used for mandate and initiating the MBMS bearer service, and plan transmits the MBMS content to schedule at mobile network.Setting up in the process of MBMS session, when BM-SC initiates a session request message, need to wait for the delay that configured in advance is good, after this time delay, just begin to transmit the MBMS data.In said process, the concrete MBMS transfer of data time started is included in each message that the BM-SC session begins process, is a value of determining in advance.So just there is a problem,, so just do not reach the purpose that adds the good delay of configured in advance, still may cause metadata cache at the entity except that BM-SC, and cause loss of data if pre-determined value is too small.If pre-determined value is excessive, just may collect too much expense to the user, the user that real-time is had relatively high expectations also can't satisfy its demand.
Summary of the invention
The method that the object of the present invention is to provide a kind of multimedia broadcast multicast service conversation to set up,, it can avoid being provided with the problem that postpones size effectively before session begins, and owing to postpones to be provided with the excessive or too small adverse effect of bringing.
For realizing the method for a kind of multimedia broadcast multicast service conversation foundation that purpose of the present invention provides, comprise the following steps:
A. before multimedia broadcast multicast service conversation began, a counter and a timer for corresponding this session of broadcast multicast service center interpolation were each IAD of corresponding multimedia broadcasting or multicast service, add a counter;
B. broadcast multicast service center is sent corresponding session to the IAD of corresponding multimedia broadcasting or multicast service and is begun request message, starts timer simultaneously;
The IAD of C. corresponding multimedia broadcasting or multicast service needs this serving base station to send a multimedia broadcast multicast service conversation respectively to each that is connected to this IAD to begin request message;
D. the base station is the corresponding service users interest to be set up transmit the needed Radio Resource of multimedia broadcast and multicast service data;
E. the base station begins response message to multimedia broadcast multicast service conversation of IAD transmission, and the counter of corresponding IAD adds 1;
F. IAD begins response message to multimedia broadcast multicast service conversation of broadcast multicast service center transmission, and the counter of broadcast multicast service center adds 1.
In the described steps A, also comprise step:
Under steps A 1. multicast patterns, bearer context for the multimedia broadcast-multicast service of the broadcast multicast service center of corresponding multimedia broadcasting or multicast service, the bearer context of the bearer context of the multimedia broadcast-multicast service of IAD and the multimedia broadcast-multicast service of base station, add loaded state sign and two fields of multimedia broadcast multicast service notice sign respectively, and initial value all is made as 0;
Under steps A 2. broadcast modes, work as broadcast multicast service center, when the bearer context of corresponding this professional multimedia broadcast-multicast service is set up in IAD and base station, for it increases loaded state sign and two fields of multimedia broadcast multicast service notice sign, and initial value also all is made as 0.
Among the described step B, broadcast multicast service center session of all IADs transmissions in the descendant node tabulation of the multimedia broadcast-multicast service bearer context of corresponding this multimedia broadcast-multicast service service begins request message and shows that transmission is about to begin, and provide session attribute to these IADs, the status attribute of the bearer context of the multimedia broadcast-multicast service of broadcast multicast service center oneself is set to " Active ", starts timer simultaneously.
Among the described step B,
If the multimedia broadcast multicast service conversation of broadcast mode carrying service, IAD need be created a multimedia broadcast multicast service conversation bearer context;
In the multimedia broadcast multicast service conversation bearer context of oneself, and status attribute is set to " Active " to these IADs separately with session attribute, loaded state identification field and descendant node list storage.
Among the described step C, comprise the following steps:
Step C1, corresponding IAD needs this serving base station to send a multimedia broadcast multicast service conversation to each that is connected to this IAD to begin request message, comprise session attribute in the message, and loaded state identification field and multimedia broadcast multicast service notice identification field values all be made as 0, the value initialization with own corresponding this traffic meter is 0 simultaneously;
Step C2, the base station is stored in session attribute and loaded state identification field in the multimedia broadcast-multicast service bearer context, and multimedia broadcast-multicast service bearer context statuses attribute is set to " Active ".
Comprise Temporary Mobile Group Identity, service quality, MBMS coverage, session identification, broadcast or multicast in the described session attribute, but do not comprise transfer of data time started field.
Among the described step D, comprise the following steps:
Step D1, after Radio Resource was set up successfully, the value of the loaded state identification field of base station oneself was set to 1;
Step D2 enters deterministic process, if the multimedia broadcast multicast service notice process has been initiated this moment in the base station, then the multimedia broadcast multicast service notice identification field values with oneself is made as 1, and the beginning initiation session begins to reply;
Step D3, otherwise the value of multimedia broadcast multicast service notice identification field remains the 0 constant process that enters the multimedia broadcast multicast service notice of corresponding this session of wait base station initiation simultaneously, the multimedia broadcast multicast service notice of initiating corresponding this session until the base station, the base station just is made as 1 with the multimedia broadcast multicast service notice identification field of oneself.
Described step D also further comprises step:
Step D1 ', when the value of base station place loaded state identification field and multimedia broadcast multicast service notice identification field all becomes 1 and the value of timer when not reaching predefined threshold values yet, the base station just sends session and begins response message;
Step D2 ', when the value of timer reaches the threshold values that sets in advance, the value of place, base station loaded state sign and two fields of multimedia broadcast multicast service notice sign does not all become 1 yet, show that then session sets up procedure failure, need begin request by broadcast multicast service center initiation session again.
In the described step e, comprise the following steps:
Comprise in the described response message and be used to set up the bearing resource Tunnel End Point Identifier.
In the described step e, also comprise the following steps:
Step e 2, when having carrying between a base station and the IAD to set up, the value of the counter of IAD adds 1, when the value of this counter greater than the descendant node tabulation of the IAD of corresponding this service in during the certain proportion of total number of base, IAD is made as 1 with the loaded state identification field values of own corresponding this service.
Described step e also further comprises:
Step e 1 ', when the value of IAD place loaded state identification field and multimedia broadcast multicast service notice identification field all becomes 1 and the value of timer when not reaching predefined threshold values yet, IAD sends session and begins response message to broadcast multicast service center;
Step e 2 ', when the value of timer reaches the threshold values that sets in advance, the value of IAD place loaded state sign and two fields of multimedia broadcast multicast service notice sign does not all become 1 yet, show that then session sets up procedure failure, need begin request by broadcast multicast service center initiation session again.
In the described step F, comprise the following steps:
In the described step F, also comprise the following steps:
Step F 2, when having carrying between an IAD and the broadcast multicast service center to set up, the Counter Value of corresponding this service adds 1 in the broadcasting multicast service, when the value of this counter greater than the descendant node tabulation of corresponding this service of broadcast multicast service center in during the certain proportion of IAD sum, broadcast multicast service center is made as 1 with the loaded state identification field values of own corresponding this service.
Described step F also further comprises the following steps:
Step F 1 ', when the value of broadcast multicast service center place loaded state identification field and multimedia broadcast multicast service notice identification field all becomes 1 and the value of timer when not reaching predefined threshold values yet, show the multimedia broadcast and multicast service data that can begin to transmit this conversation procedure correspondence;
Step F 2 ', when the value of timer reaches the threshold values that sets in advance, the value of broadcast multicast service center place loaded state sign and two fields of multimedia broadcast multicast service notice sign does not all become 1 yet, show that then session sets up procedure failure, need begin request by broadcast multicast service center initiation session again.
Beneficial effect of the present invention is:
1. the present invention has avoided must having definite problem of the good delay size of configured in advance before session begins.Can determine the opportunity that the MBMS data send more exactly than prior art.
2. the invention solves and be provided with too small because of the good delay of configured in advance, the MBMS data that cause metadata cache in transport process promptly really reaches and adds the original intention that configured in advance postpones (configurable delay) in entity except that BM-SC and the problem that causes loss of data thus.
3. the invention solves because of the good delay of configured in advance is provided with excessively, may cause the user is collected too much expense and can't satisfy demand to the exigent user of real-time.
Description of drawings
Fig. 1 is the network reference model of multimedia broadcast-multicast service;
Fig. 2 is the workflow sketch of the method for multimedia broadcast multicast service conversation foundation;
Fig. 3 is the workflow diagram of the method for multimedia broadcast multicast service conversation foundation;
Fig. 4 is the process schematic diagram that multimedia broadcast multicast service conversation begins.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the method that a kind of multimedia broadcast multicast service conversation of the present invention is set up is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The method that a kind of multimedia broadcast multicast service conversation of the present invention is set up, cancelled at multimedia broadcast-multicast service (Multimedia Broadcast Multicast Service, abbreviation MBMS) the wait structure in the conversation procedure postpones, avoid before session begins, must facing the problem that is provided with of the good delay of configured in advance, and owing to postponed to be provided with the too small or excessive adverse effect of bringing.
Introduce the method that a kind of multimedia broadcast multicast service conversation of the present invention is set up in detail below in conjunction with above-mentioned target, as shown in Figures 2 and 3, comprise the following steps:
Step S100, before the MBMS session begins, for a counter and timer of broadcast multicast service center (BroadcastMulticast-service center is called for short BM-SC) corresponding this session of interpolation, be that each IAD of corresponding this business adds a counter;
Step S110, multicast pattern add loaded state sign and MBMS notice sign two fields (initial value all is made as 0) for the MBMS bearer context (MBMS Bearer Context) of corresponding this professional each functional entity down;
Step S120, broadcast mode when each functional entity is set up this professional MBMS BearerContext of correspondence, are that it increases loaded state sign and MBMS notice sign two fields (initial value also all is made as 0) down.
Step S200, BM-SC send corresponding session to corresponding IAD and begin request message, start timer simultaneously;
BM-SC all IADs in the MBMS bearer context descendant node tabulation of corresponding this MBMS service send a session and begin to ask (Session Start Request) message to show that transmission is about to begin, and provide session attribute to these IADs, the status attribute of the MBMS bearer context of BM-SC oneself is set to " Active ", starts timer simultaneously.If the MBMS of broadcast mode carrying service, IAD need be created a MBMS Bearer Context (because at broadcast mode, not having the user's adition process under the multicast pattern).In the MBMS Bearer Context of oneself, and status attribute is set to " Active " to these IADs separately with session attribute, loaded state identification field and descendant node list storage.
Comprise Temporary Mobile Group Identity (Temporary Mobile GroupIdentity in the described session attribute, abbreviation TMGI), service quality (Quality of Service, be called for short QOS), MBMS coverage, session identification, broadcast/multi broadcast etc., but do not comprise transfer of data time started field.
Step S300, corresponding IAD need this serving base station to send a MBMS session to each that is connected to this IAD to begin request message;
Step S310, corresponding IAD needs this serving base station to send a MBMS session to each that is connected to this IAD to begin request message, comprise session attribute in the message, and loaded state identification field and MBMS notice identification field values all is made as 0, the value initialization with own corresponding this traffic meter is 0 simultaneously.
Step S320, the base station is stored in session attribute and loaded state identification field among the MBMS BearerContext, and MBMS bearer context statuses attribute is set to " Active ".
Comprise TMGI, QOS, MBMS coverage, session identification, broadcast/multi broadcast etc. in the described session attribute, but also do not comprise transfer of data time started field.
Step S400, the base station is this professional users interest to be set up transmit the needed Radio Resource of MBMS data;
After Radio Resource was set up successfully, the value of the loaded state identification field of base station oneself was set to 1.After this enter deterministic process, if the MBMS notification procedure has been initiated this moment in the base station, then the MBMS notice identification field values with oneself is made as 1, and the beginning initiation session begins to reply; Otherwise the value of MBMS notice identification field remains the 0 constant process that enters the MBMS notice of corresponding this session of wait base station initiation simultaneously, and the MBMS that initiates this session of correspondence until the base station notifies, and the base station just is made as 1 with the MBMS notice identification field of oneself.
Step S410, when the value of base station place loaded state identification field and MBMS notice identification field all becomes 1 and the value of timer when not reaching predefined threshold values yet, step S500 is just initiated in the base station;
Step S420, when the value of timer reached the threshold values that sets in advance, the value of base station place loaded state sign and two fields of MBMS notice sign did not all become 1 yet, showed that then session sets up procedure failure, need be begun to ask by BM-SC initiation session again.
Step S500, the base station begins response message to MBMS session of IAD transmission of correspondence, and the counter of corresponding IAD adds 1;
IAD receives after session begins response message, and oneself MBMS notice identification field values is made as 1.In this response message, comprise and be used to set up bearing resource Tunnel End Point Identifier (Tunnel EndpointIdentifier is called for short TEID).When having carrying between a base station and the IAD to set up, the value of the counter of IAD adds 1, when the value of this counter greater than the descendant node tabulation of the IAD of corresponding this service in during the certain proportion of total number of base, IAD is made as 1 with the loaded state identification field values of own corresponding this service.
Step S510, when the value of IAD place loaded state identification field and MBMS notice identification field all becomes 1 and the value of timer when not reaching predefined threshold values yet, IAD sends session and begins response message to BM-SC;
Step S520, when the value of timer reaches the threshold values that sets in advance, the value of IAD place loaded state sign and two fields of MBMS notice sign does not all become 1 yet, shows that then session sets up procedure failure, need be begun to ask by BM-SC initiation session again.
Step S600, IAD send a MBMS session to BM-SC and begin response message, and the counter of BM-SC adds 1;
BM-SC receives after session begins response message, and BM-SC is made as 1 with the MBMS notice identification field values of own corresponding this service.When having carrying between an IAD and the BM-SC to set up, the Counter Value of corresponding this service of BM-SC adds 1, when the value of this counter greater than the descendant node tabulation of corresponding this service of BM-SC in during the certain proportion of IAD sum, BM-SC is made as 1 with the loaded state identification field values of own corresponding this service.
Step S610 when the value of BM-SC place loaded state identification field and MBMS notice identification field all becomes 1 and the value of timer when not reaching predefined threshold values yet, shows the MBMS data that can begin to transmit this conversation procedure correspondence;
Step S620, when the value of timer reached the threshold values that sets in advance, the value of BM-SC place loaded state sign and two fields of MBMS notice sign did not all become 1 yet, showed that then session sets up procedure failure, need be begun to ask by BM-SC initiation session again.
As a kind of embodiment, below based on up-to-date entity user (UE), enhanced base station (eNodeB), IAD (AGW) and broadcast multicast service center (BM-SC) among the LTE R7 to be the process that example specifically describes broadcast multicast service conversation foundation.
Step S100 ', before the MBMS session began, a counter and a timer for BM-SC adds corresponding this session were counter of each AGW interpolation of corresponding this business;
Step S110 ', under the multicast pattern, add loaded state identification field and MBMS notice identification field before the MBMS session of corresponding this service begins simultaneously in advance in the MBMS of BM-SC, AGW and eNodeB bearer context (MBMS Bearer Context), initial value all is made as 0;
Step S120 ' under the broadcast mode, when each functional entity is set up this professional MBMS BearerContext of correspondence, is that it increases loaded state sign and two fields of MBMS notice sign, and initial value also all is made as 0.
The MBMS session begins process, as shown in Figure 4, comprises following concrete steps:
Step S200 ', BM-SC send corresponding session to corresponding AGW and begin request message, start timer simultaneously;
BM-SC all AGW in the MBMS bearer context descendant node tabulation of corresponding this MBMS service send a session and begin to ask (Session Start Request) message to show that transmission is about to begin, and provide session attribute to these AGW, the status attribute of the MBMS bearer context of BM-SC oneself is set to " Active ", starts timer simultaneously.If the MBMS of broadcast mode carrying service, AGW need create a MBMS Bearer Context (because at broadcast mode, not having the user's adition process under the multicast pattern).In the MBMS Bearer Context of oneself, and status attribute is set to " Active " to these AGW separately with session attribute, loaded state identification field and descendant node list storage.
Comprise TMGI, QOS, MBMS coverage, session identification, broadcast/multi broadcast etc. in the described session attribute, but do not comprise transfer of data time started field.
Step S300 ', corresponding AGW need the eNodeB of this service to send a MBMS session to each that is connected to this AGW to begin request message;
The corresponding AGW of step S310 ' needs the eNodeB of this service to send a MBMS session to each that is connected to this AGW to begin request message, comprise session attribute in the message, and loaded state identification field and MBMS notice identification field values all is made as 0, the value initialization with own corresponding this traffic meter is 0 simultaneously.
Step S320 ' eNodeB is stored in session attribute and loaded state identification field among the MBMSBearer Context, and MBMS bearer context statuses attribute is set to " Active ".
Comprise in the described session attribute TMGI, QOS, MBMS coverage, session identification, broadcast/multi broadcast,, but also do not comprise transfer of data time started field.
Step S400 ', eNodeB set up this professional interested UE to transmit the needed Radio Resource of MBMS data;
After Radio Resource was set up successfully, the value of the loaded state identification field of eNodeB oneself was set to 1.After this enter deterministic process, if eNodeB has initiated the MBMS notification procedure this moment, then the MBMS notice identification field values with oneself is made as 1, and the beginning initiation session begins to reply; Otherwise the value of MBMS notice identification field remains the 0 constant process that enters the MBMS notice of corresponding this session of wait eNodeB initiation simultaneously, the MBMS that initiates corresponding this session until eNodeB notifies, and eNodeB just is made as 1 with the MBMS notice identification field of oneself.
Step S410 ', when the value of eNodeB place loaded state identification field and MBMS notice identification field all becomes 1 and the value of timer when not reaching predefined threshold values yet, eNodeB just initiates step S500 ';
Step S420 ', when the value of timer reaches the threshold values that sets in advance, the value of eNodeB place loaded state sign and two fields of MBMS notice sign does not all become 1 yet, shows that then session sets up procedure failure, need be begun to ask by BM-SC initiation session again.
Step S500 ', eNodeB send a MBMS session to the AGW of correspondence and begin response message, and the counter of corresponding AGW adds 1;
AGW receives after session begins response message, and oneself MBMS notice identification field values is made as 1.In this response message, comprise and be used to set up bearing resource TEID.When having carrying between an eNodeB and the AGW to set up, the value of the counter of AGW adds 1, when the value of this counter greater than the descendant node tabulation of the AGW of corresponding this service in the eNodeB sum 90% the time, AGW is made as 1 with the loaded state identification field values of own corresponding this service.
Step S510 ', when the value of AGW place loaded state identification field and MBMS notice identification field all becomes 1 and the value of timer when not reaching predefined threshold values yet, AGW sends session and begins response message to BM-SC;
Step S520 ', when the value of timer reached the threshold values that sets in advance, the value of AGW place loaded state sign and two fields of MBMS notice sign did not all become 1 yet, showed that then session sets up procedure failure, need be begun to ask by BM-SC initiation session again.
Step S600 ', AGW send a MBMS session to BM-SC and begin response message, and the counter of BM-SC adds 1;
BM-SC receives after session begins response message, and BM-SC is made as 1 with the MBMS notice identification field values of own corresponding this service.When having carrying between an AGW and the BM-SC to set up, the Counter Value of corresponding this service of BM-SC adds 1, when the value of this counter greater than the descendant node tabulation of corresponding this service of BM-SC in the AGW sum 90% the time, BM-SC is made as 1 with the loaded state identification field values of own corresponding this service.
Step S610 ' when the value of BM-SC place loaded state identification field and MBMS notice identification field all becomes 1 and the value of timer when not reaching predefined threshold values yet, shows the MBMS data that can begin to transmit this conversation procedure correspondence;
Step S620 ', when the value of timer reached the threshold values that sets in advance, the value of BM-SC place loaded state sign and two fields of MBMS notice sign did not all become 1 yet, showed that then session sets up procedure failure, need be begun to ask by BM-SC initiation session again.
Beneficial effect of the present invention is:
1. the present invention has avoided must having definite problem of the good delay size of configured in advance before session begins.Can determine the opportunity that the MBMS data send more exactly than prior art.
2. the invention solves and be provided with too small because of the good delay of configured in advance, the MBMS data that cause metadata cache in transport process promptly really reaches and adds the original intention that configured in advance postpones (configurable delay) in entity except that BM-SC and the problem that causes loss of data thus.
3. the invention solves because of the good delay of configured in advance is provided with excessively, may cause the user is collected too much expense and can't satisfy demand to the exigent user of real-time.
In conjunction with the drawings to the description of the specific embodiment of the invention, others of the present invention and feature are conspicuous to those skilled in the art.
More than specific embodiments of the invention are described and illustrate it is exemplary that these embodiment should be considered to it, and be not used in and limit the invention, the present invention should make an explanation according to appended claim.
Claims (15)
1. the method that multimedia broadcast multicast service conversation is set up is characterized in that, comprises step:
A. before multimedia broadcast multicast service conversation began, a counter and a timer for corresponding this session of broadcast multicast service center interpolation were each IAD of corresponding multimedia broadcasting or multicast service, add a counter;
B. broadcast multicast service center is sent corresponding session to the IAD of corresponding multimedia broadcasting or multicast service and is begun request message, starts timer simultaneously;
The IAD of C. corresponding multimedia broadcasting or multicast service needs this serving base station to send a multimedia broadcast multicast service conversation respectively to each that is connected to this IAD to begin request message;
D. the base station is the corresponding service users interest to be set up transmit the needed Radio Resource of multimedia broadcast and multicast service data;
E. the base station begins response message to multimedia broadcast multicast service conversation of IAD transmission, and the counter of corresponding IAD adds 1;
F. IAD begins response message to multimedia broadcast multicast service conversation of broadcast multicast service center transmission, and the counter of broadcast multicast service center adds 1.
2. the method that multimedia broadcast multicast service conversation according to claim 1 is set up is characterized in that, in the described steps A, also comprises step:
Under steps A 1. multicast patterns, bearer context for the multimedia broadcast-multicast service of the broadcast multicast service center of corresponding multimedia broadcasting or multicast service, the bearer context of the bearer context of the multimedia broadcast-multicast service of IAD and the multimedia broadcast-multicast service of base station, add loaded state sign and two fields of multimedia broadcast multicast service notice sign respectively, and initial value all is made as 0;
Under steps A 2. broadcast modes, work as broadcast multicast service center, when the bearer context of corresponding this professional multimedia broadcast-multicast service is set up in IAD and base station, for it increases loaded state sign and two fields of multimedia broadcast multicast service notice sign, and initial value also all is made as 0.
3. the method that multimedia broadcast multicast service conversation according to claim 2 is set up, it is characterized in that, among the described step B, broadcast multicast service center session of all IADs transmissions in the descendant node tabulation of the multimedia broadcast-multicast service bearer context of corresponding this multimedia broadcast-multicast service service begins request message and shows that transmission is about to begin, and provide session attribute to these IADs, the status attribute of the bearer context of the multimedia broadcast-multicast service of broadcast multicast service center oneself is set to " Active ", starts timer simultaneously.
4. the method that multimedia broadcast multicast service conversation according to claim 3 is set up is characterized in that, among the described step B,
If the multimedia broadcast multicast service conversation of broadcast mode carrying service, IAD need be created a multimedia broadcast multicast service conversation bearer context;
In the multimedia broadcast multicast service conversation bearer context of oneself, and status attribute is set to " Active " to these IADs separately with session attribute, loaded state identification field and descendant node list storage.
5. the method that multimedia broadcast multicast service conversation according to claim 4 is set up is characterized in that, among the described step C, comprises the following steps:
Step C1, corresponding IAD needs this serving base station to send a multimedia broadcast multicast service conversation to each that is connected to this IAD to begin request message, comprise session attribute in the message, and loaded state identification field and multimedia broadcast multicast service notice identification field values all be made as 0, the value initialization with own corresponding this traffic meter is 0 simultaneously;
Step C2, the base station is stored in session attribute and loaded state identification field in the multimedia broadcast-multicast service bearer context, and multimedia broadcast-multicast service bearer context statuses attribute is set to " Active ".
6. according to claim 3 or 4 or 5 wherein one, the method that described multimedia broadcast multicast service conversation is set up, it is characterized in that, comprise Temporary Mobile Group Identity, service quality, MBMS coverage, session identification, broadcast or multicast in the described session attribute, but do not comprise transfer of data time started field.
7. the method that multimedia broadcast multicast service conversation according to claim 5 is set up is characterized in that, among the described step D, comprises the following steps:
Step D1, after Radio Resource was set up successfully, the value of the loaded state identification field of base station oneself was set to 1;
Step D2 enters deterministic process, if the multimedia broadcast multicast service notice process has been initiated this moment in the base station, then the multimedia broadcast multicast service notice identification field values with oneself is made as 1, and the beginning initiation session begins to reply;
Step D3, otherwise the value of multimedia broadcast multicast service notice identification field remains the 0 constant process that enters the multimedia broadcast multicast service notice of corresponding this session of wait base station initiation simultaneously, the multimedia broadcast multicast service notice of initiating corresponding this session until the base station, the base station just is made as 1 with the multimedia broadcast multicast service notice identification field of oneself.
8. the method that multimedia broadcast multicast service conversation according to claim 7 is set up is characterized in that described step D also further comprises step:
Step D1 ', when the value of base station place loaded state identification field and multimedia broadcast multicast service notice identification field all becomes 1 and the value of timer when not reaching predefined threshold values yet, the base station just sends session and begins response message;
Step D2 ', when the value of timer reaches the threshold values that sets in advance, the value of place, base station loaded state sign and two fields of multimedia broadcast multicast service notice sign does not all become 1 yet, show that then session sets up procedure failure, need begin request by broadcast multicast service center initiation session again.
9. the method that multimedia broadcast multicast service conversation according to claim 8 is set up is characterized in that, in the described step e, comprises the following steps:
Step e 1, IAD receive after session begins response message, and oneself multimedia broadcast multicast service notice identification field values is made as 1.
10. the method that multimedia broadcast multicast service conversation according to claim 9 is set up is characterized in that, comprises in the described response message being used to set up the bearing resource Tunnel End Point Identifier.
11. the method that multimedia broadcast multicast service conversation according to claim 9 is set up is characterized in that, in the described step e, also comprises the following steps:
Step e 2, when having carrying between a base station and the IAD to set up, the value of the counter of IAD adds 1, when the value of this counter greater than the descendant node tabulation of the IAD of corresponding this service in during the certain proportion of total number of base, IAD is made as 1 with the loaded state identification field values of own corresponding this service.
12. the method that multimedia broadcast multicast service conversation according to claim 11 is set up is characterized in that described step e also further comprises:
Step e 1 ', when the value of IAD place loaded state identification field and multimedia broadcast multicast service notice identification field all becomes 1 and the value of timer when not reaching predefined threshold values yet, IAD sends session and begins response message to broadcast multicast service center;
Step e 2 ', when the value of timer reaches the threshold values that sets in advance, the value of IAD place loaded state sign and two fields of multimedia broadcast multicast service notice sign does not all become 1 yet, show that then session sets up procedure failure, need begin request by broadcast multicast service center initiation session again.
13. the method that multimedia broadcast multicast service conversation according to claim 12 is set up is characterized in that, in the described step F, comprises the following steps:
Step F 1, broadcast multicast service center receive after session begins response message, and broadcast multicast service center is made as 1 with the multimedia broadcast multicast service notice identification field values of own corresponding this service.
14. the method that multimedia broadcast multicast service conversation according to claim 13 is set up is characterized in that, in the described step F, also comprises the following steps:
Step F 2, when having carrying between an IAD and the broadcast multicast service center to set up, the Counter Value of corresponding this service adds 1 in the broadcasting multicast service, when the value of this counter greater than the descendant node tabulation of corresponding this service of broadcast multicast service center in during the certain proportion of IAD sum, broadcast multicast service center is made as 1 with the loaded state identification field values of own corresponding this service.
15. the method that multimedia broadcast multicast service conversation according to claim 14 is set up is characterized in that described step F also further comprises the following steps:
Step F 1 ', when the value of broadcast multicast service center place loaded state identification field and multimedia broadcast multicast service notice identification field all becomes 1 and the value of timer when not reaching predefined threshold values yet, show the multimedia broadcast and multicast service data that can begin to transmit this conversation procedure correspondence;
Step F 2 ', when the value of timer reaches the threshold values that sets in advance, the value of broadcast multicast service center place loaded state sign and two fields of multimedia broadcast multicast service notice sign does not all become 1 yet, show that then session sets up procedure failure, need begin request by broadcast multicast service center initiation session again.
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