CN101056249A - A method and system for transmitting the multicast broadcast information - Google Patents
A method and system for transmitting the multicast broadcast information Download PDFInfo
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- CN101056249A CN101056249A CNA2006100731892A CN200610073189A CN101056249A CN 101056249 A CN101056249 A CN 101056249A CN A2006100731892 A CNA2006100731892 A CN A2006100731892A CN 200610073189 A CN200610073189 A CN 200610073189A CN 101056249 A CN101056249 A CN 101056249A
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Abstract
The invention discloses a method and system for sending the multicast broadcast message and is applied in the communication technology area, the described method includes the following steps: (p1) specify the distribution tie of the data packet; (p2) send the data packets to the base station; (p3) the base station distributes the data packets after a period. The system includes contents distribution source and base station, content distribution source is used to send the data packets to the base station and specify the distribution time of the data packets. The base station is used to distribute the data packets in the specified time. The invention can solve the synchronization problems of the multicast broadcast service between the base stations and can guarantee that different base stations in one multicast broadcast area can send same multicast broadcast message at any time, so it can better support the macro sub-set.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the method and system that a kind of multicast broadcast information sends.
Background technology
The structure of sub-district is mostly adopted in present wireless network design, and the user of sub-district finishes communication by the base station.In order to guarantee the continuity of telex network, neighbor cell is overlapped.When the user crossed over different districts, if want the quality of maintenance communication, the user need be to adjacent sub-district request channel, and this process is called handover.Diversity reception is exactly to receive the very little signal that is loaded with same message of correlation on some branch roads, each signal is selected or synthetic by folding, thereby alleviated because the factor such as block of hypsography, building and barrier causes the influence that signal fadeout causes.In the process of handover, travelling carriage receives the same signal from two or more base station simultaneously, it is carried out diversity merging and judgement, thereby the received signal quality when improving travelling carriage and being in handover, and the data when guaranteeing handover do not lose, and this diversity is called grand diversity.
Micro-wave access to global intercommunication (WiMAX:Worldwide Interoperability MicrowaveAccess) the grand diversity of network support.Multicast and broadcast broadcast service (MBS:Multicast and Broadcast Service) based on the WiMAX network is supported two kinds of access modules: single base station is inserted and many base stations are inserted.Under the access module of many base stations, base station in MBS district sends the content of same MBS Business Stream with identical connection identifier (CID:ConnectionIdentifier) and Security Association (SA:Security Association), the terminal of having registered the MBS service can receive the MBS content by a plurality of base stations in the MBS district, promptly terminal is supported grand diversity.This requires a plurality of base station synchronization transmission MBS Business Streams in the MBS district, and be used to encrypt the multicast and broadcast key of MBS Business Stream also must be synchronously.
In 3GPP (Third Generation Partnership Projects) and 3GPP2, the diversity technique that is used for multicast and broadcast does not require synchronization among base stations.3GPP2 is that the merging that the synchronous code sign when sending is engaged in end side is finished.This method adopts in the network of different physical-layer techniques and can't realize with 3GPP2 with other at the Wimax network, has increased the complexity of system and also higher to demanding terminal simultaneously.
Because different base station sends same signal together simultaneously, and is very high to synchronous requirement.And the time of identical signal arrival base station is different.How the signal of receiving is not kept stipulating synchronously in the base station at present.
Summary of the invention
The technical problem to be solved in the present invention provides the method and system that a kind of multicast broadcast information sends, and these method and system can make the different base station in the same multicast and broadcast district can send same multicast broadcast information at one time.
For solving the problems of the technologies described above, the objective of the invention is to be achieved through the following technical solutions: the method that a kind of multicast broadcast information sends is characterized in that comprising step: 1) the required time that issues of specific data bag; 2) described packet is sent to the base station; 3) arrive the described time, the base station issues described packet.
Preferably, also comprise: it is synchronous that local zone time is carried out according to same clock source in the base station.
Preferably, the base station carry out local zone time synchronously with the global position system GPS clock and/or from connecting line clock that the core net transmission line obtains as described clock source.
Preferably, the base station is according to the time reference proof time that presets.
Preferably, described time reference is the clock time of content distribution source.
Preferably, the required time that issues of specific data bag is specially in the described step 1): the absolute time of specifying described packet to issue under the time reference that presets; Perhaps, the absolute time of specifying described packet under base station clock, to issue; Perhaps, the relative time of specifying described packet and specified data bag to issue.
Preferably, issue the sign designated time that issues of this packet in the packet described.
Preferably, specify the time that issues by the described packet in the message informing base station of presetting.
Preferably, buffer memory is carried out to packet before packet is issued in the base station in the described step 3).
Preferably, also comprise step: 4) the content distribution source is adjusted packet and is specified the time that issues according to the feedback information of base station.
Preferably, the feedback information of described base station is temporal information and/or the current bandwidth information that packet issues.
The system that a kind of multicast broadcast information provided by the invention sends comprises content distribution source and base station, and described content distribution source is used for packet is sent to the base station, and specifies the required time that issues of this packet; Described base station is used for time of issuing described, and described packet is issued.
Preferably, described content distribution source also was used in the described packet sign designated time that issues of this packet.
Preferably, described content distribution source also is used for specifying the time that issues by the described packet in the message informing base station of presetting.
Preferably, described base station also is used for packet is carried out buffer memory.
Above technical scheme as can be seen, at first, by the required time that issues of specific data bag, and when arriving described time, the base station issues packet.Solved the synchronous problem of multicast broadcast service between the base station, guaranteed that the different base station in the same at any time multicast and broadcast district can send same multicast broadcast information at one time, thereby well supported grand diversity.
Further, the present invention can be based upon on the basis of Absolute Time Synchronization between the base station, can keep time synchronized each other by obtaining unified clock signal from unified clock source between the base station in the MBS district.Because each base station local zone time keeps synchronously in the MBS district, can serve as that integral body is proofreaded with time reference with the MBS district.When the specific data bag issues the time, also can be to for integral pin all base stations appointments of its inside being issued the time in the MBS district.Thereby can simplify the burden of calculating mitigation system and realize convenient reliable.
Further, time of issuing as this current packet of the content distribution source relative time that can specify current data packet and specified data bag to issue the time.Compare with the definitely time of issuing of appointment, relative time has advantages such as convenience of calculation, saving transport overhead.
Description of drawings
Fig. 1, the structure chart of the system that sends for multicast broadcast information of the present invention;
Fig. 2, the general flow chart of the method that sends for multicast broadcast information of the present invention;
Fig. 3, the flow chart of method first embodiment that sends for multicast broadcast information of the present invention;
Fig. 4 is for embodiment of the invention base station obtains the clock signal schematic diagram;
Fig. 5, the flow chart of method second embodiment that sends for multicast broadcast information of the present invention;
Fig. 6, the flow chart of method the 3rd embodiment that sends for multicast broadcast information of the present invention;
Fig. 7, the flow chart of method the 4th embodiment that sends for multicast broadcast information of the present invention.
Embodiment
The invention provides the method and system that a kind of multicast broadcast information sends, be applied to communication technical field.The main thought of these method and system is: the required time that issues of specific data bag; Described packet is sent to the base station; Arrive the described time, the base station issues described packet.These method and system have solved the synchronous problem of multicast broadcast service between the base station, guarantee that the different base station in the same at any time multicast and broadcast district can send same multicast broadcast information at one time.
Seeing also Fig. 1, is the structure chart of the system of multicast broadcast information transmission of the present invention, comprises content distribution source 200 and base station 100.
Described content distribution source 200 is used for packet is sent to base station 100, and specifies the required time that issues of this packet.
Described base station 100 is used for time of issuing described, and described packet is issued.
Wherein, described content distribution source 200 can be the MBS server, also can be other network elements that data content is provided.
See also Fig. 2, the present invention realizes that the method that multicast broadcast information sends comprises step:
Step p1, the required time that issues of specific data bag;
Step p2 sends to the base station with described packet;
Step p3 arrives the described time, and the base station issues described packet.
For the ease of the present invention is further understood, describe the present invention below in conjunction with specific embodiment.
Among each embodiment, according to the required time that issues of specific data bag, designed a timestamp, the temporal information that this timestamp comprises is the required time that issues of packet.Because the required time that issues of packet can be absolute time also can be relative time, its time corresponding is stabbed and also is divided into absolute time timestamp or relative time timestamp.
Below among each embodiment, what the content distribution source adopted is the MBS server, packet sends to the base station from the MBS server, has guaranteed that the same programme content that is sent to same MBS district sends from same transmission source.
Among first embodiment, timestamp adopts the absolute time timestamp, and all carries timestamp in each independent packet.
Seeing also Fig. 3, is the flow chart of first embodiment of the method that sends of multicast broadcast information of the present invention.
Concrete steps are as follows:
Step a1, each base station in the MBS district is according to reference clock source, as gps clock or from connecting the synchronous local zone times such as line clock that the core net transmission line obtains.
Consult Fig. 4 in the lump, wherein, adopt the line clock source when gps clock source also can be adopted in each base station in the MBS district as backup and additional.
Step a2 sets up the relative time synchronized relation between each base station and MBS server in the MBS district, and promptly the base station is according to MBS server local zone time proof time, obtains the time difference of each base station and MBS server clock in the MBS district.
This sentences the MBS server local clock time is time reference.
Between base station and the MBS server clock the time difference=base station clock time-MBS server clock time
Because each base station local zone time keeps synchronously in the MBS district, can serve as whole and MBS server synchronized relation settling time with the MBS district.
Step a3, MBS server calculate and generate multicast and broadcast packet time corresponding stamp, and add the absolute time timestamp in described packet.
Because each base station local zone time keeps synchronously in the MBS district, when generating packet time corresponding stamp, can be that integral pin generates same timestamp to all base stations in its inside with a MBS district.
In the present embodiment, this timestamp adopts the absolute time timestamp, and this timestamp form is as shown in table 1.
Table 1
| Title | Length (bits) | Describe |
| BTime | 32 (can become according to circumstances) | Packet issues the time (stating when this bag should be sent out by under the base station, is absolute time) here |
Wherein, the invention is not restricted to this a kind of timestamp design, all timestamp designs that can characterize the user data transmitting time all can.
The computational methods of the absolute time that the packet that the absolute time timestamp comprises issues under base station clock are:
The time difference of clock between time+base station that the packet transmitting time=MBS server place packet expectation multicast and broadcast issues and the MBS server
To the base station, wherein every Bao Jun carries timestamp from the MBS Server Transport for step a4, multicast and broadcast packet.
Wherein can adopt in the transmission course multicast or clean culture or other technology with packet delivery to the different target base station.
Step a51 and step a52, base station end judge the transmitting time of this packet and carry out corresponding buffer memory according to timestamp after receiving packet.
Step a53, if in the packet process of transmitting not enough or other reason of the buffer memory of base station end, the quality condition that the base station can the judgment data bag sends also feeds back notice MBS server and adjusts accordingly.The content that reports can include but not limited to the speed of the speed that sends, postponing ahead of time of time, related contents such as the increase minimizing of bandwidth, and the MBS server can be judged after receiving in view of the above and the packet time corresponding that whether needs to adjust transmission of making a strategic decision is stabbed.
Step a61 and step a62, each base station issues the time place of the packet in the buffer memory in its timestamp appointment.
Among second embodiment, timestamp adopts the absolute time timestamp, and regularly or aperiodically the delivery time stabs separately.
Seeing also Fig. 5, is the flow chart of second embodiment of the method that sends of multicast broadcast information of the present invention, and concrete steps are as follows.
Step b1, the different base station in the MBS district are according to reference clock source, as the synchronous local zone times such as line clock that obtain on gps clock or the connection core net transmission line.
Consult Fig. 4 in the lump, wherein, adopt the line clock source when gps clock source also can be adopted in each base station in the MBS district as backup and additional.
Step b2 sets up the relative time synchronized relation between each base station and MBS server in the MBS, and promptly the base station is according to MBS server local zone time proof time, obtains the time difference of each base station and MBS server clock in the MBS district.
This sentences the MBS server local clock time is time reference.
Between base station and the MBS server clock the time difference=base station clock time-MBS server clock time
Because each base station local zone time keeps synchronously in the MBS district, can serve as whole and MBS server synchronized relation settling time with the MBS district.
Step b3, MBS server calculate and generate multicast and broadcast packet time corresponding stamp.
Because each base station local zone time keeps synchronously in the MBS district, when generating packet time corresponding stamp, can be that integral pin generates same timestamp to all base stations in its inside with a MBS district.
In the present embodiment, this timestamp adopts the absolute time timestamp, and this timestamp form is as shown in table 2.
Table 2
| Title | Length (bits) | Describe |
| BTime | 32 (can become according to circumstances) | Packet issues the time (stating when this bag should be sent out by under the base station, is absolute time) here |
| BSN | 16 (can become according to circumstances) | The sequence number of the packet that sends |
Wherein, the invention is not restricted to this a kind of timestamp design, all timestamp designs that can characterize the user data transmitting time all can.
The computational methods of the absolute time that the packet that the absolute time timestamp comprises issues under base station clock are:
The time difference of clock between time+base station that the packet transmitting time=MBS server place packet expectation multicast and broadcast issues and the MBS server
To the base station, wherein every bag carries sequence number from the MBS Server Transport for step b4, multicast and broadcast packet; Independent timestamp will regularly or aperiodically be sent.
Step b51 and step b52, the base station end carries out buffer memory and ordering to the data that receive, and judges with decision should when send the packet that the sequence number of its appointment begins after the time of receipt (T of R) stabs.The sequence number here can be in the step b4 process in packet entrained sequence number also can be the natural sequence (if can guarantee real-time Transmission) that data content receives.
Step b53, if in the packet process of transmitting not enough or other reason of the buffer memory of base station end, the quality condition that the base station can the judgment data bag sends also feeds back notice MBS server and adjusts accordingly.The content that reports can include but not limited to the speed of the speed that sends, postponing ahead of time of time, related contents such as the increase minimizing of bandwidth, and the MBS server can be judged after receiving in view of the above and the packet time corresponding that whether needs to adjust transmission of making a strategic decision is stabbed.
Step b61 and step b62, each base station issues the time place of the packet in the buffer memory in its timestamp appointment.
More than among first embodiment and second embodiment, sending to the absolute time that the absolute time timestamp of base station comprises by the MBS server is the absolute time that packet issues under base station clock.Be understandable that, the absolute time that this absolute time timestamp comprises also can be the absolute time that packet issues under MBS server clock, after just the base station obtains described timestamp, poor according to clock time between base station and the MBS server, calculate the absolute time that this packet this locality issues.
Among the 3rd embodiment, timestamp adopts the relative time timestamp, and all carries timestamp in each packet.
Seeing also Fig. 6, is the flow chart of the 3rd embodiment of the method that sends of multicast broadcast information of the present invention, and concrete steps are as follows:
Each base station is according to reference clock source, as the synchronous local zone times such as line clock that obtain on gps clock or the connection core net transmission line in the step c1, MBS;
Consult Fig. 4 in the lump, wherein, adopt the line clock source when gps clock source also can be adopted in each base station in the MBS district as backup and additional.
Step c2 sets up the relative time synchronized relation between the base station and MBS server in the MBS district, and promptly the base station is according to MBS server local zone time proof time, obtains the time difference of each base station and MBS server clock in the MBS district.
This sentences the MBS server local clock time is time reference.
Between base station and the MBS server clock the time difference=base station clock time-MBS server clock time
Because each base station local zone time keeps synchronously in the MBS district, can serve as whole and MBS server synchronized relation settling time with the MBS district
Step c3, the relative reference time that the specified data bag sends between base station and the MBS server in MBS; The time that the reference time issues for first multicast and broadcast packet in the transmission content in the present embodiment, the computational methods of described reference time are:
The reference time=MBS server place sends the time difference that first packet in the content is estimated clock between the time+base station that issues and the MBS server
The absolute time timestamp of just described first multicast and broadcast packet correspondence, the reference time described in the present embodiment sends to the base station by the MBS server by the absolute time timestamp.The form of this timestamp is as shown in table 3, and this timestamp of present embodiment adds its corresponding packet and sends together.
Table 3
| Title | Length (bits) | Describe |
| BTimeBase | 32 (can become according to circumstances) | Packet sends the reference time (send and once get final product) of relative time at the beginning of content sends |
Step c4, the MBS server calculates and generates multicast and broadcast packet time corresponding stamp, and adds this timestamp in described packet, and described timestamp is the relative time timestamp, its form is as shown in table 4, and described relative time is the time of described reference time of relative step c3.
Because each base station local zone time keeps synchronously in the MBS district, when generating packet time corresponding stamp, can be that integral pin generates same timestamp to all base stations in its inside with a MBS district.
Table 4
| Title | Length (bits) | Describe |
| BTime | 32 (can become according to circumstances) | Packet issues the time (stating when this bag should be sent out by under the base station, is relative time) here |
Wherein, the invention is not restricted to this a kind of timestamp design, all timestamp designs that can characterize the user data transmitting time all can be used for the design of timestamp.
To the base station, wherein each content data packets is all carried timestamp from the MBS Server Transport for step c5, multicast and broadcast packet; Can adopt in the transmission course multicast or clean culture or other technology with packet delivery to the different target base station;
Step c61 and step c62, base station end judge the transmitting time of this packet and carry out corresponding buffer memory according to timestamp after receiving packet.
Step c63, if in the packet process of transmitting not enough or other reason of the buffer memory of base station end, the quality condition that the base station can the judgment data bag sends also feeds back notice MBS server and adjusts accordingly.The content that reports can include but not limited to the speed of the speed that sends, postponing ahead of time of time, related contents such as the increase minimizing of bandwidth, and the MBS server can be judged after receiving in view of the above and the packet time corresponding that whether needs to adjust transmission of making a strategic decision is stabbed.
Step c71 and step c72, each base station issues the time place of the packet in the buffer memory in its timestamp appointment.
The 4th embodiment, timestamp adopt the relative time timestamp, and regularly or aperiodically separately transmitting time stab.
Seeing also Fig. 7, is the flow chart of the 4th embodiment of the method that sends of multicast broadcast information of the present invention,
Concrete steps are as follows:
Steps d 1, each base station is according to reference clock source, as the synchronous local zone times such as line clock that obtain on gps clock or the connection core net transmission line in the MBS district.
Consult Fig. 4 in the lump, wherein, adopt the line clock source when gps clock source also can be adopted in each base station in the MBS district as backup and additional.
Steps d 2 is set up the relative time synchronized relation between the base station and MBS server in the MBS district, that is, promptly the base station is according to MBS server local zone time proof time, obtains the time difference of each base station and MBS server clock in the MBS district;
This sentences the MBS server local clock time is time reference.
Between base station and the MBS server clock the time difference=base station clock time-MBS server clock time
Because each base station local zone time keeps synchronously in the MBS district, can serve as whole and MBS server synchronized relation settling time with the MBS district.
Steps d 3, the relative reference time that the specified data bag sends between base station and the MBS server in MBS; The time that the reference time issues for first multicast and broadcast packet in the transmission content in the present embodiment, the computational methods of described reference time are:
The reference time=MBS server place sends the time difference that first packet in the content is estimated clock between the time+base station that issues and the MBS server
The absolute time timestamp of just described first multicast and broadcast packet correspondence, the reference time described in the present embodiment sends to the base station by the MBS server by the absolute time timestamp.The form of this timestamp is as shown in table 3, and in the present embodiment, this timestamp sends separately.
Steps d 4, MBS server are calculated and are generated multicast and broadcast packet time corresponding stamp, and described timestamp is the relative time timestamp, and its form is as shown in table 5, and described relative time is the time of the described fiducial value of relative step d3.
Because each base station local zone time keeps synchronously in the MBS district, when generating packet time corresponding stamp, can be that integral pin generates same timestamp to all base stations in its inside with a MBS district.
Table 5
| Title | Length (bits) | Describe |
| BTime | 32 (can become according to circumstances) | Packet issues the time (stating when this bag should be sent out by under the base station, is relative time) here |
| BSN | 16 (can become according to circumstances) | The sequence number of the packet that sends |
To the base station, wherein every bag carries sequence number from the MBS Server Transport for steps d 5, multicast and broadcast packet; Independent timestamp will regularly or aperiodically be sent.
Can adopt in the transmission course multicast or clean culture or other technology with packet delivery to the different target base station;
Steps d 61 and steps d 62, the base station end carries out buffer memory and ordering to the data that receive, when the time of receipt (T of R) stabs and judges that packet that the back begins the sequence number of its appointment with decision is somebody's turn to do and when send.The sequence number here can be a steps d 5, in the process in packet entrained sequence number also can be the natural sequence (if can guarantee real-time Transmission) that data content receives;
Steps d 63, if in the packet process of transmitting not enough or other reason of the buffer memory of base station end, the quality condition that the base station can the judgment data bag sends also feeds back notice MBS server and adjusts accordingly.The content that reports can include but not limited to the speed of the speed that sends, postponing ahead of time of time, related contents such as the increase minimizing of bandwidth, and the MBS server can be judged after receiving in view of the above and the packet time corresponding that whether needs to adjust transmission of making a strategic decision is stabbed.
Steps d 71 and steps d 72, each base station issues the time place of the packet in the buffer memory in its timestamp appointment.
More than among first embodiment to the, four embodiment timestamp calculate in the content distribution source and generate.Timestamp also can calculate in the base station and generate, or calculates generation jointly by content distribution source and base station, can also be calculated by other network elements that are independent of base station and content distribution source to generate.
Be understandable that the present invention also can each implement on the time maintenance synchronous foundation in not requiring the MBS district basically, concrete implementation step and first to fourth embodiment step are roughly the same, just do not need the local zone time of each base station in the synchronous MBS district.But need in the MBS district each base station to set up relation lock in time with the content distribution source respectively, promptly determine the time difference separately.Generate different timestamps for same packets need at each base station, can realize that equally also each base station sends same information simultaneously in the MBS district.But this kind mode has taken more system resource comparatively speaking, has increased the weight of the burden of base station and content distribution source, does not advise adopting.
Correspondingly, the present invention also provides the realization system for carrying out said process.
Seeing also Fig. 1, is the structure chart of the system of multicast broadcast information transmission of the present invention, comprises content distribution source 200 and base station 100.
Described content distribution source 200 is used for packet is sent to base station 100, and specifies the required time that issues of this packet; Also be used for issuing described that this packet of packet sign is appointed to issue the time or issuing the time by the described packet appointment in message informing base station of presetting.
Described base station 100 is used for packet is carried out buffer memory, in the described time that issues, packet is issued.
Each base station in the MBS district is according to reference clock source, as synchronous local zone time such as gps clock or line clock; Set up the relative time synchronized relation between base station and the content distribution source in the MBS district; Promptly obtain the time difference of each base station and content distribution source clock in the MBS district; The content distribution source is calculated and is generated multicast and broadcast packet time corresponding stamp, and adds the absolute time timestamp in described packet; The content distribution source sends to the base station with the multicast and broadcast packet, and wherein every Bao Jun carries timestamp; The base station end is judged the transmitting time of this packet and is carried out corresponding buffer memory according to timestamp after receiving packet; If not enough or other reason of the buffer memory of base station end in the content process of transmitting, the quality condition that the base station can the judgment data bag sends also feeds back the content of announcement distribution source and adjusts accordingly, the content that reports can include but not limited to the speed of the speed that sends, postponing ahead of time of time, related contents such as the increase minimizing of bandwidth, and the content distribution source can judge and make a strategic decision whether need to adjust the packet time corresponding and stab after receiving in view of the above; Last each base station specifies the time place that issues to issue the content of buffer memory at its timestamp.
More than method and system that a kind of multicast broadcast information provided by the present invention is sent be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (15)
1. the method that sends of a multicast broadcast information is characterized in that comprising step:
1) the required time that issues of specific data bag;
2) described packet is sent to the base station;
3) arrive the described time, the base station issues described packet.
2. the method that multicast broadcast information as claimed in claim 1 sends is characterized in that, also comprises: it is synchronous that local zone time is carried out according to same clock source in the base station.
3. the method that multicast broadcast information as claimed in claim 2 sends is characterized in that: the base station carry out local zone time synchronously with the global position system GPS clock and/or from connecting line clock that the core net transmission line obtains as described clock source.
4. the method that multicast broadcast information as claimed in claim 1 or 2 sends is characterized in that, the base station is according to the time reference proof time that presets.
5. the method that multicast broadcast information as claimed in claim 4 sends is characterized in that described time reference is the clock time of content distribution source.
6. the method that multicast broadcast information as claimed in claim 4 sends is characterized in that the required time that issues of specific data bag is specially in the described step 1): the absolute time of specifying described packet to issue under the time reference that presets; Perhaps, the absolute time of specifying described packet under base station clock, to issue; Perhaps, the relative time of specifying described packet and specified data bag to issue.
7. the method that multicast broadcast information as claimed in claim 6 sends is characterized in that, issues the sign designated time that issues of this packet in the packet described.
8. the method that multicast broadcast information as claimed in claim 6 sends is characterized in that, specifies the time that issues by the described packet in the message informing base station of presetting.
9. the method that multicast broadcast information as claimed in claim 1 sends is characterized in that, buffer memory is carried out to packet before packet is issued in the base station in the described step 3).
10. the method that multicast broadcast information as claimed in claim 1 sends is characterized in that, also comprises step:
4) the content distribution source is adjusted packet and is specified the time that issues according to the feedback information of base station.
11. the method that multicast broadcast information as claimed in claim 10 sends is characterized in that the feedback information of described base station is temporal information and/or the current bandwidth information that packet issues.
12. the system that multicast broadcast information sends comprises content distribution source and base station, it is characterized in that: described content distribution source is used for packet is sent to the base station, and specifies the required time that issues of this packet; Described base station is used for time of issuing described, and described packet is issued.
13. the system that multicast broadcast information as claimed in claim 13 sends is characterized in that: described content distribution source also was used in the described packet sign designated time that issues of this packet.
14. the system that multicast broadcast information as claimed in claim 13 sends is characterized in that: described content distribution source also is used for specifying the time that issues by the described packet in the message informing base station of presetting.
15. as the system that claim 13,14 or 15 described multicast broadcast informations send, it is characterized in that: described base station also is used for packet is carried out buffer memory.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062436A1 (en) * | 2007-10-31 | 2009-05-22 | Huawei Technologies Co., Ltd. | A synchronization adjusting method for multimedia broadcast multicast service and an enhanced base station |
| WO2009067930A1 (en) * | 2007-11-15 | 2009-06-04 | Huawei Technologies Co., Ltd. | Method for synchronously sending multicast broadcast service and multihop relay base station |
| WO2010012230A1 (en) * | 2008-08-01 | 2010-02-04 | 华为技术有限公司 | Data synchronization method and device |
| WO2011113223A1 (en) * | 2010-03-16 | 2011-09-22 | 西安西电捷通无线网络通信股份有限公司 | Method and system of service-based secure multicast |
| CN102217326A (en) * | 2008-11-13 | 2011-10-12 | 微动公司 | Transmitter with a relative-time timer |
| CN102457370A (en) * | 2010-10-27 | 2012-05-16 | 金蝶软件（中国）有限公司 | Virtual cluster synchronization signal generating method, device and system |
| US8498231B2 (en) | 2008-08-05 | 2013-07-30 | Industrial Technology Research Institute | System and method for multicast and broadcast service synchronization |
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| CN109155904A (en) * | 2016-03-31 | 2019-01-04 | 诺基亚通信公司 | The device and method for supporting local multicast broadcast multimedia service (MBMS) to distribute |
| CN112272080A (en) * | 2017-04-27 | 2021-01-26 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
| WO2023184063A1 (en) * | 2022-03-28 | 2023-10-05 | Oppo广东移动通信有限公司 | Data transmission method and apparatus, device, storage medium, and program product |
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2006
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2009062436A1 (en) * | 2007-10-31 | 2009-05-22 | Huawei Technologies Co., Ltd. | A synchronization adjusting method for multimedia broadcast multicast service and an enhanced base station |
| WO2009067930A1 (en) * | 2007-11-15 | 2009-06-04 | Huawei Technologies Co., Ltd. | Method for synchronously sending multicast broadcast service and multihop relay base station |
| CN101437197B (en) * | 2007-11-15 | 2010-06-09 | 华为技术有限公司 | Method for synchronously sending multicast and broadcast service and multi-hop relay base station |
| WO2010012230A1 (en) * | 2008-08-01 | 2010-02-04 | 华为技术有限公司 | Data synchronization method and device |
| US8498231B2 (en) | 2008-08-05 | 2013-07-30 | Industrial Technology Research Institute | System and method for multicast and broadcast service synchronization |
| CN102217326B (en) * | 2008-11-13 | 2016-07-06 | 微动公司 | There is the conveyer of relative-time timer |
| CN102217326A (en) * | 2008-11-13 | 2011-10-12 | 微动公司 | Transmitter with a relative-time timer |
| US9820019B2 (en) | 2008-11-13 | 2017-11-14 | Micro Motion, Inc. | Transmitter with a relative-time timer |
| WO2011113223A1 (en) * | 2010-03-16 | 2011-09-22 | 西安西电捷通无线网络通信股份有限公司 | Method and system of service-based secure multicast |
| CN102457370A (en) * | 2010-10-27 | 2012-05-16 | 金蝶软件（中国）有限公司 | Virtual cluster synchronization signal generating method, device and system |
| WO2017045438A1 (en) * | 2015-09-17 | 2017-03-23 | 中兴通讯股份有限公司 | Content caching method, apparatus, and system in mobile network decision cdn |
| CN109155904A (en) * | 2016-03-31 | 2019-01-04 | 诺基亚通信公司 | The device and method for supporting local multicast broadcast multimedia service (MBMS) to distribute |
| US11317249B2 (en) | 2016-03-31 | 2022-04-26 | Nokia Solutions And Networks Oy | Apparatuses and methods to support local multimedia broadcast multicast service (MBMS) distribution |
| CN109155904B (en) * | 2016-03-31 | 2022-06-07 | 诺基亚通信公司 | Apparatus and method for supporting local Multimedia Broadcast Multicast Service (MBMS) distribution |
| CN112272080A (en) * | 2017-04-27 | 2021-01-26 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
| WO2023184063A1 (en) * | 2022-03-28 | 2023-10-05 | Oppo广东移动通信有限公司 | Data transmission method and apparatus, device, storage medium, and program product |
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