CN101562779B - System for sending multimedia broadcast and multicast service data and method thereof - Google Patents

System for sending multimedia broadcast and multicast service data and method thereof Download PDF

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Publication number
CN101562779B
CN101562779B CN2008101044571A CN200810104457A CN101562779B CN 101562779 B CN101562779 B CN 101562779B CN 2008101044571 A CN2008101044571 A CN 2008101044571A CN 200810104457 A CN200810104457 A CN 200810104457A CN 101562779 B CN101562779 B CN 101562779B
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business datum
mbms business
entity
drnc
cfn
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CN101562779A (en
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王树立
苏晓勃
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Abstract

The invention provides a system for sending multimedia broadcast and multicast service (MBMS) data and a method thereof; wherein, the system comprises a core network, a serving radio network controller (SRNC) and one or more than one drift radio network controllers (DRNC); wherein, the SRNC is used for receiving MBMS service data sent by the core network, sending the MBMS service data and time information for sending the MBMS service data to the DRNC, and sending the MBMS service data at the moment corresponding to the time information; and the DRNC is used for receiving the MBMS service data and the time information, and sending the MBMS service data at the moment corresponding to the time information. The system and the method can help realize synchronous MBMS service data sending among different RNCs, thus eliminating interference between adjacent cells.

Description

Send the system and method for multimedia broadcast and multicast service data
Technical field
The present invention relates to multimedia broadcast-multicast service (MBMS, Multimedia Broadcast and Multicast Service) field, particularly send the system and method for MBMS data.
Background technology
Multi-media broadcasting service is a very potential business of being had an optimistic view of by industry at present.Multimedia broadcasting is meant that mainly mobile phone users receives the digital audio content of the forms of broadcasting with the form of channel or channel on the intelligent mobile terminal with operating system and video capability.Multimedia broadcasting mainly contains two kinds of technology kinds: a kind of is the terrestrial broadcasting mobile TV standard of the Da Qu system of broadcasting and TV system, and another kind is based on the MBMS standard of mobile communication system Cellular Networks.At present, in the TD-SCDMA system, formulated corresponding standard, be to have realized the MBMS business, in original TD-SCDMA system, increased broadcast multicast service center (BM-SC), and existing packet domain functional entity is increased the MBMS function supported to realize.Referring to Fig. 1, Fig. 1 is a MBMS service architecture schematic diagram in the prior art TD-SCDMA system.
The scheme that realizes the MBMS business in the TD-SCDMA system shown in Figure 1 adopts following key technology:
1, in same radio network controller (RNC), the sub-district of broadcasting same MBMS business has same frequency, time slot and code channel, and like this, interference among adjacent cells will be transformed into gain.
2, in the different districts of same RNC, send identical MBMS business datum, and send at synchronization.Because the TD-SCDMA system itself requires System Frame Number (SFN) unanimity of all base stations of same RNC, in order to reach above-mentioned requirements, RNC in the system adopts two layers of (L2) framework as shown in Figure 2, Fig. 2 is the L2 configuration diagram of RNC in the system of existing techniques in realizing TD-SCDMA MBMS business, each RNC only disposes Radio Link control (RLC) entity to a business, reaches each sub-district with this and sends identical MBMS business datum; To a plurality of medium access control-m of each business configuration (MAC-m) entity, dispatch by the MAC-m entity, because SFN and Connection Frame Number (CFN) have definite corresponding relation, therefore the CFN of each MAC-m entity is identical, thereby has guaranteed that each MAC-m entity sends the MBMS business datum in the identical moment (being the pairing moment of CFN) in the same RNC.
By above-mentioned introduction as seen, prior art can only guarantee to send in the different districts of same RNC the MBMS business datum synchronously, but, because the SFN difference of different RNCs in the TD-SCDMA system, and SFN and CFN have definite corresponding relation, therefore the CFN difference of the MAC-m entity in the different RNCs so can't guarantee to send the synchronous of MBMS business datum between different RNCs, causes existing between the neighbor cell and disturbs.
Summary of the invention
The embodiment of the invention proposes a kind of system, service wireless network controller (SRNC) and floating radio network controller (DRNC) that sends the MBMS business datum, and this system, SRNC and DRNC can guarantee synchronized transmission MBMS business datum between different RNCs.
The embodiment of the invention also proposes a kind of method of the MBMS of transmission business datum, and this method can guarantee synchronized transmission MBMS business datum between different RNCs.
Technical scheme of the present invention is achieved in that
A kind of system that sends the MBMS business datum comprises: core net, a SRNC and one or more DRNC;
Described SRNC, be used to every kind of MBMS business datum to dispose the termination point of a tunnel identifier TEID and the IP address of different DRNC correspondences, receive the MBMS business datum that core net sends, according to described configuration, the TEID and the IP address of the MBMS business datum correspondence that selective reception is arrived, temporal information, TEID and the IP address of described MBMS business datum, transmission MBMS business datum are sent to DRNC, and described MBMS business datum are sent to the base station in the pairing moment of described temporal information;
Described DRNC, be used for configuration and receive the pairing TEID of MBMS business datum not of the same race, according to described configuration, receive MBMS business datum and the time information corresponding with the TEID of its configuration, in the pairing moment of described temporal information described MBMS business datum is sent to the base station.
A kind of method that sends the MBMS business datum comprises:
One group of RNC in the network is set to a SRNC and one or more DRNC from function; SRNC is termination point of a tunnel identifier TEID and the IP address that every kind of MBMS business datum disposes different DRNC correspondences, and the DRNC configuration receives the pairing TEID of MBMS business datum not of the same race;
SRNC receives the MBMS business datum that core net sends, according to the configuration of self, the TEID and the IP address of the MBMS business datum correspondence that selective reception is arrived are sent to DRNC with described MBMS business datum, the temporal information, TEID and the IP address that send the MBMS business datum; DRNC selects to receive with the pairing MBMS business datum of TEID of its configuration and the temporal information of transmission MBMS business datum according to the configuration of self;
SRNC and DRNC are sent to the base station in the pairing moment of described temporal information with described MBMS business datum.
As seen, the system and method that the embodiment of the invention proposes, one group of RNC in the MBMS service synchronization zone is configured to SRNC and DRNC from function, carry out data forwarding by the Iu interface, the MBMS business datum is sent to DRNC from SRNC, and the temporal information that will send the MBMS business datum is sent to DRNC, make SRNC can all send identical MBMS business datum in the indicated moment of this temporal information with DRNC, thereby realized synchronized transmission MBMS business datum between different RNCs, eliminated the interference between the neighbor cell.
Description of drawings
Fig. 1 is a MBMS service architecture schematic diagram in the prior art TD-SCDMA system;
Fig. 2 is the L2 configuration diagram of RNC in the system of existing techniques in realizing TD-SCDMAMBMS business;
Fig. 3 is the system configuration schematic diagram of the transmission MBMS business datum of embodiment of the invention proposition;
Fig. 4 sends the method flow diagram of MBMS business datum for the embodiment of the invention.
Embodiment
One group of RNC in the embodiment of the invention MBMS service area is set to a SRNC and one or more DRNC from function.Based on above-mentioned thought, the embodiment of the invention proposes a kind of system that sends the MBMS business datum, comprising: core net, a SRNC and one or more DRNC;
SRNC is used to receive the MBMS business datum that core net sends, and MBMS business datum and the temporal information that sends the MBMS business datum is sent to DRNC, and in the pairing moment of temporal information the MBMS business datum is sent to the base station;
DRNC is used to receive MBMS business datum and time information, in the pairing moment of temporal information the MBMS business datum is sent to the base station.
By said system, SRNC can send identical MBMS business datum at the pairing synchronization of above-mentioned same temporal information with DRNC, realizes sending between different RNCs the synchronous of MBMS business datum.In the said system, the temporal information that sends the MBMS business datum can be CFN, and the MAC-m entity of being responsible for scheduling among the SRNC calculates corresponding C FN according to the pairing SFN of this SRNC, and feeds back to SRNC.Perhaps, the temporal information of transmission MBMS business datum also can be the data of other express time scale.
As shown in Figure 3, Fig. 3 is the system configuration schematic diagram of the transmission MBMS business datum of embodiment of the invention proposition.Wherein, this system comprises a SRNC 310, one or more DRNC 320 and core net 330.Because structure and the function of each DRNC are identical, for for simplicity, a DRNC 320 only are shown in Fig. 3.
In the present embodiment, be that CFN describes with the temporal information that sends the MBMS business datum.
In the present embodiment, SRNC 310 can comprise: RLC entity 311, PDCP (PDCP) entity 312, GPRS Tunnel Protocol user plane part (GTP_U) entity 313 and MAC-m entity 314, wherein:
RLC entity 311 is used to receive core net 330 via the MBMS business datum that GTP_U entity 313 and PDCP entity 312 send, and described MBMS business datum is sent to MAC-m entity 314; The MBMS business datum that reception MAC-m entity 314 returns and the CFN of MBMS business datum correspondence are sent to PDCP entity 312 with described MBMS business datum that receives and CFN;
PDCP entity 312 is used to receive MBMS business datum and CFN, and MBMS business datum and CFN are sent to GTP_U entity 313;
GTP_U entity 313 is used to receive MBMS business datum and CFN, and MBMS business datum and CFN are packaged into the GTP_U packet, and described GTP_U packet is sent to DRNC 320 via core net;
MAC-m entity 314 is used to receive the MBMS business datum that RLC entity 311 sends, and calculates the CFN of described MBMS business datum correspondence, will be sent to the base station by the MBMS business datum that RLC entity 311 receives in the pairing moment of CFN; And the CFN of MBMS business datum and MBMS business datum correspondence is back to the RLC entity.One or more MAC-m entities 314 can be arranged in SRNC 310, and the function of each MAC-m entity 314 is identical with structure, Fig. 3 only illustrates 1 MAC-m entity 314.
DRNC 320 comprises: GTP_U entity 321 and MAC-m entity 322, wherein:
GTP_U entity 321, be used to receive the GTP_U packet that SRNC sends via core net, GTP_U packet deblocking is dressed up MBMS business datum and CFN, the MBMS business datum is sent to MAC-m entity 322, and indication MAC-m entity 322 sends the MBMS business datum in the pairing moment of CFN;
MAC-m entity 322 is used to receive the MBMS business datum, and in the pairing moment of CFN the MBMS business datum is sent to the base station according to the indication of GTP_U entity 321.One or more MAC-m entities 322 can be arranged in DRNC 320, and the function of each MAC-m entity 322 is identical with structure, Fig. 3 illustrates 2 MAC-m entities 322.Need to prove in addition, in DRNC, PDCP entity between GTP_U entity 321 and the MAC-m entity 322 and RLC entity transparent transmission, and the data of transmission are not done any processing.
As seen, said system guarantees that SRNC 310 sends identical MBMS business datum with DRNC 320, and send in the identical time, owing in advance one group of RNC is provided with little SRNC and DRNC from function in the network, so said system can realize the synchronized transmission of MBMS business datum between different RNCs.
In said system, SRNC can dispose identical physical channel, transmission channel and RB configuration with DRNC, thereby frequency, time slot and code channel that the same MBMS business datum of assurance transmission is adopted are identical.
In the said system, adopting GTP_U tunneling technique transmission data, is termination point of a tunnel identifier (TEID) and the IP address that every kind of MBMS business datum disposes different DRNC correspondences in the SRNC side, and the DRNC configuration receives the pairing TEID of MBMS business datum not of the same race;
Above-mentioned SRNC 310 also is used for the configuration according to self, and the TEID and the IP address of the MBMS business datum correspondence that selective reception is arrived when sending the temporal information of MBMS business datum and described transmission MBMS business datum, are sent to DRNC with TEID and IP address;
DRNC 320, also are used for the configuration according to self, receive and the pairing MBMS business datum of TEID of its configuration and the temporal information of transmission MBMS business datum.
The embodiment of the invention also proposes a kind of SRNC, comprising:
The preceding unit that changes, be used to receive the MBMS business datum that core net sends, described MBMS business datum is sent to transmitting element, receive MBMS business datum that transmitting element returns and the temporal information that sends described MBMS business datum, described MBMS business datum and the temporal information that sends the MBMS business datum are sent to DRNC;
Transmitting element changes the MBMS business datum that the unit sends before being used to receive, and calculates the temporal information that sends described MBMS business datum, in the pairing moment of described temporal information the MBMS business datum is sent to the base station; Change the unit before MBMS business datum and the temporal information that sends described MBMS business datum be back to.
Among the above-mentioned SRNC, preceding commentaries on classics unit can comprise: RLC entity, PDCP entity and GTP_U entity, wherein:
The RLC entity, be used to receive the MBMS business datum that core net sends via GTP_U entity and PDCP entity, the MBMS business datum is sent to transmitting element, the MBMS business datum that the reception transmitting element returns and the CFN of MBMS business datum correspondence are sent to the PDCP entity with described MBMS business datum that receives and CFN;
The PDCP entity is used to receive MBMS business datum and CFN, and MBMS business datum and CFN are sent to the GTP_U entity;
The GTP_U entity is used to receive MBMS business datum and CFN, and MBMS business datum and CFN are packaged into the GTP_U packet, is sent to DRNC;
Transmitting element can comprise: MAC-m entity, this MAC-m entity are used to receive the MBMS business datum that the RLC entity sends, and calculate the CFN of this MBMS business datum correspondence, in the pairing moment of CFN the MBMS business datum are sent to the base station; And change the unit before the CFN of MBMS business datum and MBMS business datum correspondence is back to.
The embodiment of the invention also proposes a kind of DRNC, comprising: GTP_U entity and MAC-m entity, wherein:
The GTP_U entity, can be used to receive the GTP_U packet that SRNC sends, GTP_U packet deblocking is dressed up MBMS business datum and CFN, the MBMS business datum is sent to the MAC-m entity, and indication MAC-m entity sends the MBMS business datum in the pairing moment of CFN;
The MAC-m entity can be used to receive the MBMS business datum, and sends described MBMS business datum according to the indication of GTP_U entity in the pairing moment of CFN.
The embodiment of the invention also proposes a kind of method of the MBMS of transmission business datum, and this method can realize the synchronized transmission of MBMS business datum between the different RNCs.Referring to Fig. 4, Fig. 4 sends the method flow diagram of MBMS business datum for the embodiment of the invention.This method comprises:
Step 401: one group of RNC in the network is set to a SRNC and one or more DRNC from function;
Step 402:SRNC receives the MBMS business datum that core net sends, and MBMS business datum and the temporal information that sends the MBMS business datum are sent to DRNC;
Step 403:SRNC and DRNC are sent to the base station in the pairing moment of temporal information with the MBMS business datum.
In step 402, owing to carry out changeing before the MBMS business datum, SRNC will be sent to DRNC from the MBMS business datum that core net receives, and the temporal information that will send the MBMS data is notified DRNC, thereby the MBMS business datum that sends in the different districts in the step 402 is identical, and all be to send, guaranteed the synchronized transmission of MBMS business datum between different RNCs in the pairing moment of temporal information.
In the said method, the temporal information that sends the MBMS business datum can be the data of CFN or other express time scale.
In the said method, when the temporal information of transmission MBMS business datum is CFN;
SRNC can comprise the step that MBMS business datum and the temporal information that sends the MBMS business datum are sent to DRNC in the step 402: SRNC is packaged into the GTP_U packet with MBMS business datum and CFN, is sent to DRNC;
The step that DRNC sends the MBMS business datum in the pairing moment of temporal information in the step 403 can comprise: DRNC receives the GTP_U packet that SRNC sends, GTP_U packet deblocking is dressed up MBMS business datum and CFN, send the MBMS business datum in the pairing moment of CFN.
In said method, each layer protocol entity is the execution entity of encapsulation action among the SRNC; The GTP_U entity of DRNC is finished decapsulation, PDCP entity and RLC entity transparent transmission in this process.
Said method may further include: the physical channel that SRNC is identical with the DRNC configuration, transmission channel and RB configuration, thus frequency, time slot and code channel that the same MBMS business datum of assurance transmission is adopted are identical.
In the said method, can adopt GTP_U tunneling technique transmission data, then said method may further include: be TEID and the IP address that every kind of MBMS business datum disposes different DRNC correspondences in the SRNC side in advance, receive the pairing TEID of MBMS business datum not of the same race in the configuration of DRNC side;
SRNC is according to the configuration of self, and the TEID and the IP address of the MBMS business datum correspondence that selective reception is arrived when sending the temporal information of MBMS business datum and described transmission MBMS business datum, are sent to DRNC with described TEID and IP address; DRNC selects to receive with the pairing MBMS business datum of TEID of its configuration and the temporal information of transmission MBMS business datum according to the configuration of self.
As fully visible, the system and method that the embodiment of the invention proposes, at first one group of RNC in the MBMS service synchronization zone is configured to SRNC and DRNC from function, afterwards, when SRNC when core net receives the MBMS business datum, carry out data forwarding by the Iu interface, the MBMS business datum is sent to DRNC from SRNC, and the temporal information that will send the MBMS business datum is sent to DRNC, makes that the sub-district in SRNC and the DRNC can send identical MBMS business datum in the identical time.And, the physical channel that SRNC is identical with the DRNC configuration, transmission channel and RB configuration, thus frequency, time slot and code channel that the same MBMS business datum of assurance transmission is adopted are identical.

Claims (10)

1. a system that sends multimedia broadcasting and multicast MBMS business datum is characterized in that, described system comprises: core net, a service wireless network controller SRNC and one or more floating radio network controllers DRNC;
Described SRNC, be used to every kind of MBMS business datum to dispose the termination point of a tunnel identifier TEID and the IP address of different DRNC correspondences, receive the MBMS business datum that core net sends, according to described configuration, the TEID and the IP address of the MBMS business datum correspondence that selective reception is arrived, temporal information, TEID and the IP address of described MBMS business datum, transmission MBMS business datum are sent to DRNC, and described MBMS business datum are sent to the base station in the pairing moment of described temporal information;
Described DRNC, be used for configuration and receive the pairing TEID of MBMS business datum not of the same race, according to described configuration, receive MBMS business datum and the time information corresponding with the TEID of its configuration, in the pairing moment of described temporal information described MBMS business datum is sent to the base station.
2. system according to claim 1 is characterized in that, the temporal information of described transmission MBMS business datum is Connection Frame Number CFN.
3. system according to claim 2, it is characterized in that, described SRNC comprises: Radio Link control RLC entity, PDCP PDCP entity, GPRS Tunnel Protocol user plane part GTP_U entity and media access control MAC-m entity, wherein:
Described RLC entity is used to receive core net via the MBMS business datum that GTP_U entity and PDCP entity send, and described MBMS business datum is sent to the MAC-m entity; The MBMS business datum that reception MAC-m entity returns and the CFN of MBMS business datum correspondence are sent to the PDCP entity with described MBMS business datum that receives and CFN;
Described PDCP entity is used to receive MBMS business datum and CFN, and described MBMS business datum and CFN are sent to the GTP_U entity;
Described GTP_U entity is used to receive MBMS business datum and CFN, and described MBMS business datum and CFN are packaged into the GTP_U packet, is sent to DRNC;
Described MAC-m entity is used to receive the MBMS business datum that the RLC entity sends, and calculates the CFN of described MBMS business datum correspondence, in the pairing moment of described CFN described MBMS business datum is sent to the base station; The CFN of MBMS business datum and MBMS business datum correspondence is back to the RLC entity.
4. system according to claim 2 is characterized in that, described DRNC comprises: GTP_U entity and MAC-m entity, wherein:
Described GTP_U entity, be used to receive the GTP_U packet that SRNC sends, described GTP_U packet deblocking is dressed up MBMS business datum and CFN, described MBMS business datum is sent to the MAC-m entity, and indication MAC-m entity sends the MBMS business datum in the pairing moment of described CFN;
Described MAC-m entity is used to receive the MBMS business datum, and sends described MBMS business datum according to the indication of described GTP_U entity in the pairing moment of CFN.
5. system according to claim 1 is characterized in that, the physical channel that described SRNC is identical with the DRNC configuration, transmission channel and RB configuration.
6. a method that sends the MBMS business datum is characterized in that, described method comprises:
One group of RNC in the network is set to a SRNC and one or more DRNC from function; SRNC is termination point of a tunnel identifier TEID and the IP address that every kind of MBMS business datum disposes different DRNC correspondences, and the DRNC configuration receives the pairing TEID of MBMS business datum not of the same race;
SRNC receives the MBMS business datum that core net sends, according to the configuration of self, the TEID and the IP address of the MBMS business datum correspondence that selective reception is arrived are sent to DRNC with described MBMS business datum, the temporal information, TEID and the IP address that send the MBMS business datum; DRNC selects to receive with the pairing MBMS business datum of TEID of its configuration and the temporal information of transmission MBMS business datum according to the configuration of self;
SRNC and DRNC are sent to the base station in the pairing moment of described temporal information with described MBMS business datum.
7. method according to claim 6 is characterized in that, the temporal information of described transmission MBMS business datum is CFN.
8. method according to claim 6, it is characterized in that, described SRNC comprises the step that MBMS business datum and the temporal information that sends the MBMS business datum are sent to DRNC: SRNC is packaged into the GTP_U packet with described MBMS business datum and CFN, is sent to DRNC.
9. method according to claim 7, it is characterized in that, the step that described DRNC sends described MBMS business datum in the pairing moment of temporal information comprises: DRNC receives the GTP_U packet that described SRNC sends, described GTP_U packet deblocking is dressed up MBMS business datum and CFN, send described MBMS business datum in the pairing moment of described CFN.
10. method according to claim 6 is characterized in that, described method further comprises: the physical channel that SRNC is identical with the DRNC configuration, transmission channel and RB configuration.
CN2008101044571A 2008-04-18 2008-04-18 System for sending multimedia broadcast and multicast service data and method thereof Active CN101562779B (en)

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