CN101299822B - System, method, equipment and apparatus for synchronous transmission - Google Patents
System, method, equipment and apparatus for synchronous transmission Download PDFInfo
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- CN101299822B CN101299822B CN2007101015733A CN200710101573A CN101299822B CN 101299822 B CN101299822 B CN 101299822B CN 2007101015733 A CN2007101015733 A CN 2007101015733A CN 200710101573 A CN200710101573 A CN 200710101573A CN 101299822 B CN101299822 B CN 101299822B
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Abstract
The invention provides a synchronous transmission system, a method, a device and equipment, belonging to the technical field of the communication, wherein the method includes: when MBS conversation is initiated, a center dispatch transmission unit determines and transmits the transmission parameter of MBS data at the port, and the local dispatch transmission unit uses the transmission parameter to perform the port process on the MBS data; the center dispatch transmission determines the dispatch parameter of the MBS data, and the local dispatch transmission unit distributes the port bandwidth for the MBS data according to the transmission unit; the center dispatch transmission unit separates, codes the MBS data, and configurates the clock synchronization indication; the local dispatch transmission unit transmits the MBS data according to the code sequence processed by the port through the port bandwidth. The method realizes the dispatch synchronization, the data package time sequence synchronization and the transmission parameter synchronization under the MBS mode, thereby realizing the transmission synchronization of the MBS data.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of system, method, equipment and device of synchronous transmission.
Background technology
Along with development of Communication Technique, the application of various wireless access technologys also more and more widely, for example; The wireless metropolitan area network technology WiMAX that the IEEE802.16 standard is mentioned (Worldwide InteroperabilityMicrowave Access, micro-wave access to global intercommunication), this technology has proposed a kind of new air-interface standard to microwave and millimeter wave frequency band; Be used for transmitting wireless signals; It can provide towards the high speed of the Internet and connect, and uses this technology, can provide 50 kilometer range with interior broadband wireless access service; And WiMAX supports MBS (Multicast and Broadcast Service, multicast/broadcast business).
MBS be in the IEEE802.16 standard in order to use shared Radio Resource, send same content to a plurality of receiving terminals, and provide flexibly, effective mechanism and method.MBS can be used to transmit real-time streaming media service, also can be used to transmit non real-time file download service, and the content of transmission comprises various data types, like text, multimedia and Streaming Media etc.The member of multi-broadcast group can be a static configuration, also can be dynamic adding, and the user can at any time add or leave multi-broadcast group.
In IEEE802.16-2005; Multi-base station MBS is defined as a kind of multicast/broadcast business mode; All join the MS (Mobile Subscribe Station, travelling carriage) that this multi-base station MBS connects and can receive the multicast/broadcast data stream through encryption from any base station in the specified scope in the time of appointment under this mode.This trafficwise needs all to join the professional base station of identical multi-base station MBS can synchronously transmit multicast/broadcast data.In agreement, in the scope in same MBS zone, all BS need the identical content stream of synchronous transmission, and its mode is that identical transmission means is used in the identical time in each base station, such as symbol, subchannel, modulation system etc., sends identical PDU.Through receiving the data from a plurality of BS synchronous transmission simultaneously, MS (Mobile Station, travelling carriage) obtains corresponding diversity gain, improves systematic function, optimizes travelling performance;
In the prior art, the multi-base station MBS pattern is optimal design for the transmission that realizes unicast service, in this case; A certain terminal at a time receives only the content from unique base station; Therefore do not have many synchronization among base stations transmission requirements, for example, existing WiMAX network is the scheduling of being accomplished bandwidth of air-interface by each base station separately; And confirm the transmission parameter of eating dishes without rice or wine by the base station according to the feedback of eat dishes without rice or wine quality of channel and MS, comprise code modulation mode.Under this scene, there is not the transmitting synchronous demand of data time sequence between the base station.
In realizing process of the present invention; The inventor finds to have following problem in the prior art at least: under the multi-base station MBS pattern, to the professional macro diversity that receives of MBS, optimize MBS traffic transmission effect in order to realize the terminal; Need relate to the transmitting synchronous between a plurality of base stations; Guarantee that scheduling is also promptly used identical transmission parameter, and transmitted the MBS Business Stream dispatching cycle synchronously between a plurality of base stations; Therefore the scheduling based on existing single inside of base station can't realize the transmitting synchronous between a plurality of base stations, can't satisfy the professional demand of multi-base station MBS; And because relate to the transmitting synchronous between a plurality of base stations; Need to guarantee the consistency of same data flow on transmission time sequence between different base station; What also promptly should transmit in the same physical space of synchronization is the packet of same content; To guarantee the consistency of the data message that the terminal receives from different base stations at synchronization, therefore scheduling and the transmission mechanism based on existing base station can't satisfy under the multi-base station MBS scene the conforming demand of data time sequence between many base stations.
Summary of the invention
The purpose of the embodiment of the invention provides a kind of system, method, equipment and device of synchronous transmission; Can make that the scheduling of MBS data between many base stations is synchronous, transmission parameter synchronously and the sequential of packet synchronous, to realize the transmitting synchronous of MBS data between many base stations.
For solving the problems of the technologies described above, the objective of the invention is to realize through following technical scheme:
The embodiment of the invention provides a kind of system of synchronous transmission on the one hand, comprising: center dispatch transmission unit, local scheduling transmission unit;
The center dispatch transmission unit comprises: the transmitting and scheduling control unit that is used to confirm, adjust, safeguard transmission parameter and scheduling parameter; Be used for periodic structure and send the synchronous indicating member of clock synchronization indication; Be used for the MBS packet be divided into data block, to the data block number and by the transmission processing unit of data block numbering sequence transmission MBS data;
The local scheduling transmission unit comprises: the receiving element that is used to receive said transmission parameter, scheduling parameter, clock synchronization indication and data block; Be used for according to said scheduling parameter is the bandwidth of air-interface scheduling unit of MBS data allocations bandwidth of air-interface; Be used for the transmission processing unit of eating dishes without rice or wine of the MBS data being eated dishes without rice or wine to handle according to said transmission parameter; Be used for utilizing said bandwidth of air-interface to send the data block synchronous processing unit of eating dishes without rice or wine through the MBS data of eating dishes without rice or wine to handle according to said clock synchronization indication and data block numbering sequence.
The embodiment of the invention provides a kind of equipment of synchronous transmission on the other hand, comprising:
Receiving element is used to receive transmission parameter, scheduling parameter, clock synchronization indication and data block;
The bandwidth of air-interface scheduling unit, being used for according to said scheduling parameter is MBS data allocations bandwidth of air-interface;
The transmission processing unit of eating dishes without rice or wine is used for according to said transmission parameter the MBS data being eated dishes without rice or wine to handle;
The data block of eating dishes without rice or wine synchronous processing unit is used for utilizing said bandwidth of air-interface to send the MBS data through eating dishes without rice or wine to handle according to said clock synchronization indication and data block numbering sequence.
The embodiment of the invention provides a kind of device of synchronous transmission on the other hand, comprising:
The transmitting and scheduling control unit is used to confirm, adjusts, safeguards transmission parameter and scheduling parameter;
Indicating member is used for periodic structure and sends clock synchronization indication, the mapping relations between telltable clock cycle and the sequence of blocks of data synchronously;
Transmission processing unit is used for the MBS packet is divided into data block, numbers sequence transmission MBS data to the data block number and by data block.
The embodiment of the invention provides a kind of method of synchronous transmission on the other hand, comprising:
The center dispatch transmission unit confirms and sends the MBS data at the transmission parameter of eating dishes without rice or wine that the local scheduling transmission unit receives said transmission parameter, and utilizes said transmission parameter that the MBS data are eated dishes without rice or wine to handle;
The scheduling parameter of MBS data is confirmed according to the attribute and the interface-free resources behaviour in service of said MBS session in the center dispatch transmission unit, and the local scheduling transmission unit is a MBS distribution of flows bandwidth of air-interface according to said scheduling parameter;
Cut apart the MBS data, number the center dispatch transmission unit; And periodically construct and send clock synchronization and indicate; The local scheduling transmission unit utilizes the MBS data after said bandwidth of air-interface is handled eating dishes without rice or wine to transmit by numbered sequence according to said clock synchronization indication.
The embodiment of the invention provides a kind of method of synchronous transmission on the other hand, comprising:
The center dispatch transmission unit confirms that the MBS session at the transmission parameter of eating dishes without rice or wine, sends to the local scheduling transmission unit with said transmission parameter;
The local scheduling transmission unit sends the feedback information that comprises the relevant transmission quality of eating dishes without rice or wine to the center dispatch transmission unit;
When the center dispatch transmission unit needs the said transmission parameter of change based on said feedback information judgement, confirm new transmission parameter and new transport parameters and new transport parameters entry-into-force time point are sent to the local scheduling transmission unit;
The transmission parameter that the utilization of local scheduling transmission unit receives eats dishes without rice or wine to handle to the MBS data; And comprise resource allocation conditions and the information of the transmission quality of eating dishes without rice or wine to said transmitting and scheduling control unit feedback; When receiving new transport parameters and new transport parameters entry-into-force time when point, bring into use new transmission parameter that the MBS data are eated dishes without rice or wine to handle in effective time point appointed.
The embodiment of the invention provides a kind of method of synchronous transmission on the other hand, comprising:
The scheduling parameter of MBS session when eating dishes without rice or wine to transmit confirmed according to the session attribute and the interface-free resources behaviour in service information that comprise MBS in the center dispatch transmission unit;
The local scheduling transmission unit is from the conversation start point beginning of center dispatch transmission unit appointment; According to the position that comprises each scheduling unit in the said scheduling parameter and size, scheduling starting point and dispatching cycle, between the MBS session MBS distribution of flows bandwidth of air-interface;
The local scheduling transmission is according to said bandwidth of air-interface transmission MBS data.
The embodiment of the invention provides a kind of method of synchronous transmission on the other hand, comprising:
The center dispatch transmission unit is cut apart the MBS data, is constructed to be permeable in the data block transmitted of eating dishes without rice or wine, and the data block of constructing is numbered; And periodically construct clock synchronization indication, in order to the mapping relations between telltable clock cycle and the sequence of blocks of data, and said clock synchronization indication sent to the local scheduling transmission unit;
The local scheduling transmission unit sends the MBS data after eating dishes without rice or wine to handle according to said clock synchronization indication and data block numbering sequence.
Above technical scheme can be found out; Owing to when the transmission parameter of MBS data does not change, use this transmission parameter, when changing the transmission parameter of MBS data always; Transmission parameter after effective time point appointed is brought into use change has been realized the synchronous of transmission parameter; According to the session attribute of MBS, the scheduling parameter when confirming the MBS transfer of data utilizes said scheduling parameter to be MBS data allocations bandwidth of air-interface, has realized the synchronous of scheduling; Because periodic structure clock synchronization indication; Utilize the corresponding transmission parameter of present clock period that the corresponding MBS data of present clock of clock synchronization indication are handled; The sequential that realizes packet is synchronous; And utilize said bandwidth of air-interface that the MBS data after handling are carried out synchronous transmission, further realize the transmitting synchronous of MBS data.
Description of drawings
The system schematic that Fig. 1 provides for the embodiment of the invention;
The equipment sketch map that Fig. 2 provides for the embodiment of the invention;
The device sketch map that Fig. 3 provides for the embodiment of the invention;
The flow chart that Fig. 4 provides for the embodiment of the invention;
Signaling process figure when the transmission parameter that Fig. 5 provides for the embodiment of the invention is synchronous.
Embodiment
The embodiment of the invention provides a kind of system, method, equipment and device of synchronous transmission, for making the object of the invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, to further explain of the present invention.
Referring to Fig. 1, be the system schematic that the embodiment of the invention provides, this system comprises: center dispatch transmission unit 101, local scheduling transmission unit 102;
Center dispatch transmission unit 101 comprises: the transmitting and scheduling control unit 104 that is used to confirm, adjust, safeguard transmission parameter and scheduling parameter; Be used for periodic structure and send the synchronous indicating member 105 of clock synchronization indication; Be used for the MBS packet be divided into data block, to the data block number and by the transmission processing unit 106 of data block numbering sequence transmission MBS data;
Local scheduling transmission unit 102 comprises: the receiving element 103 that is used to receive said transmission parameter, scheduling parameter, clock synchronization indication and data block; Be used for according to said scheduling parameter is the bandwidth of air-interface scheduling unit 108 of MBS data allocations bandwidth of air-interface; Be used for the transmission processing unit 109 of eating dishes without rice or wine of the MBS data being eated dishes without rice or wine to handle according to said transmission parameter; Be used for utilizing said bandwidth of air-interface to send the data block synchronous processing unit 107 of eating dishes without rice or wine through the MBS data of eating dishes without rice or wine to handle according to said clock synchronization indication and data block numbering sequence.
Synchronous from the transmission parameter between the local scheduling transmission unit 102 respectively below, scheduling parameter synchronously, synchronous three aspects of transfer of data sequential describe.
1): when the transmission parameter between the said local scheduling transmission unit 102 is synchronous:
Transmitting and scheduling control unit 104 is used for confirming that the MBS session at the transmission parameter of eating dishes without rice or wine, sends to local scheduling transmission unit 102 with said transmission parameter; Based on the feedback information that comprises the relevant transmission quality of eating dishes without rice or wine that receives from local scheduling transmission unit 102; When needing the said transmission parameter of change, confirm new transmission parameter and new transport parameters and new transport parameters entry-into-force time point are sent to local scheduling transmission unit 102.
The transmission processing unit 109 of eating dishes without rice or wine; Be used to utilize the transmission parameter of reception that the MBS data are eated dishes without rice or wine to handle; And comprise resource allocation conditions and the quality information of the transmission parameter of eating dishes without rice or wine to said transmitting and scheduling control unit 104 feedbacks; When receiving new transport parameters and new transport parameters entry-into-force time when point, bring into use new transmission parameter that the MBS data are eated dishes without rice or wine to handle in effective time point appointed.
2): when the scheduling parameter between the said local scheduling transmission unit 102 is synchronous:
Transmitting and scheduling control unit 104; Be used for according to the session attribute of MBS and comprise information such as interface-free resources behaviour in service; Confirm the scheduling parameter of MBS session when eating dishes without rice or wine to transmit; For example, confirm with symbol offset or the symbolic number sign that takies every frame distribute data block size, with position in frame of subchannel offset or the data block that takies the number of subchannels sign, with the schedule gap periods of scheduling MBS Frame gap periods sign and the scheduling starting point that identifies with initial clock cycle of scheduling or scheduling start frame.
Bandwidth of air-interface scheduling unit 108; Be used for the conversation start point beginning of 101 appointments from the center dispatch transmission unit; According to the position and size, scheduling starting point and dispatching cycle of each scheduling unit in the said scheduling parameter, between the MBS session MBS distribution of flows bandwidth of air-interface.
Wherein, said scheduling parameter includes but not limited to the position and size, scheduling starting point and dispatching cycle of each scheduling unit;
3): when the transfer of data sequential is synchronous between the said local scheduling transmission unit 102:
Indicating member 105 is used for periodically constructing the clock synchronization indication synchronously, and said clock synchronization indication 105 is sent to local scheduling transmission unit 102, the mapping relations between telltable clock cycle and the sequence of blocks of data;
The transmission processing unit 109 of eating dishes without rice or wine is used to utilize said transmission parameter that the MBS data are eated dishes without rice or wine to handle, and for example MAC handles, coding, modulation.
The data block of eating dishes without rice or wine synchronous processing unit 107 is used for utilizing said bandwidth of air-interface to send the MBS data after eating dishes without rice or wine to handle according to said clock synchronization indication and data block numbering sequence.
Wherein, said center dispatch transmission unit 101 can be positioned on ASN-GW (Access ServiceNetwork Gate Way, access service network gateway) or other network element entities, also possibly independently exist as an entity.
Wherein, said local scheduling transmission unit 102 is at least one base station, and perhaps local scheduling transmission unit 102 is at least one wireless transmission unit except that the base station, is used to realize scheduling and the transmission of MBS business on eating dishes without rice or wine.
Referring to Fig. 2, the equipment sketch map for the embodiment of the invention provides comprises:
Receiving element 103 is used to receive said transmission parameter, scheduling parameter, clock synchronization indication and data block;
Bandwidth of air-interface scheduling unit 108; Being used for according to said scheduling parameter is MBS data allocations bandwidth of air-interface, for example, every at a distance from the specified frame number of scheduling parameter from the beginning of conversation start point; Framing bit in appointment is changed to the bandwidth that the MBS data allocations is specified size, in order to transmission MBS packet;
The transmission processing unit 109 of eating dishes without rice or wine is used for according to said transmission parameter the MBS data being eated dishes without rice or wine to handle, and for example MAC handles, coding, modulation;
The data block of eating dishes without rice or wine synchronous processing unit 107 is used for utilizing said bandwidth of air-interface to send the MBS data through eating dishes without rice or wine to handle according to said clock synchronization indication and data block numbering sequence.
Wherein, said transmitting apparatus is base station or the radio transmission apparatus except that the base station.
Referring to Fig. 3, the device sketch map for the embodiment of the invention provides comprises:
Transmitting and scheduling control unit 104 is used to confirm, adjusts, safeguards transmission parameter and scheduling parameter; For example; According to the estimation of the channel of eating dishes without rice or wine, QoS demand or other approach of MBS data flow needs are confirmed the transmission parameter that the MBS data flow is being eated dishes without rice or wine; Based on the feedback information that comprises the relevant transmission quality of eating dishes without rice or wine that receives; When needing the said transmission parameter of change, confirm new transmission parameter and issue new transport parameters and new transport parameters entry-into-force time point; According to session attribute and the interface-free resources behaviour in service of MBS, confirm the scheduling parameter of MBS session when eating dishes without rice or wine to transmit, this scheduling parameter includes but not limited to the position and size, scheduling starting point and dispatching cycle of each scheduling unit;
Indicating member 105 is used for periodic structure and sends clock synchronization indication, the mapping relations between telltable clock cycle and sequence of blocks of data synchronously;
Wherein, said management equipment can be positioned on ASN-GW (Access Service Network Gate Way, access service network gateway) or other network element entities, also possibly independently exist as an entity.
Referring to Fig. 4, the flow chart that provides for the embodiment of the invention:
401: center dispatch transmission unit basis is to the estimation of the channel of eating dishes without rice or wine, the QoS requirement of MBS data needs; Or confirm the transmission parameter of MBS data through other approach; And the transmission parameter of confirming sent to the local scheduling transmission unit; The local scheduling transmission unit receives said transmission parameter, and utilizes said transmission parameter that the MBS data are eated dishes without rice or wine to handle, and for example MAC handles, encodes, modulates;
Wherein, The transmission parameter of MBS data includes but not limited to: type of coding, modulation parameter, MAC operating parameter if transmission parameter is constant, use this transmission parameter always; Perhaps when the transmission parameter of change MBS data, the transmission parameter after effective time point appointed is brought into use change.
402: the center dispatch transmission unit is according to the session attribute of MBS; This session attribute includes but not limited to size, flow, the quality of service requirement of MBS packet; Confirm the scheduling parameter of these MBS data when eating dishes without rice or wine to transmit through corresponding algorithm, the local scheduling transmission unit is a MBS distribution of flows bandwidth of air-interface according to said scheduling parameter, for example; Begin to every at a distance from the specified frame number of schedule gap periods, in the bandwidth of appointed positions from the conversation start point for MBS data allocations appointment size;
Wherein, scheduling parameter comprises singly and being not limited to: with every frame distribute data block size of symbol offset or the symbolic number sign that takies, with position in frame of subchannel offset or the data block that takies the number of subchannels sign, with the schedule gap periods of scheduling MBS Frame gap periods sign and the scheduling starting point that identifies with initial clock cycle of scheduling or scheduling start frame.
403: before transmission MBS data, the center dispatch transmission unit is cut apart the MBS packet or amalgamation, be constructed to be permeable in the data block transmitted of eating dishes without rice or wine, and the data block numbering to constructing; The indication of periodic structure clock synchronization is in order to the mapping relations between telltable clock cycle and data block sequence number; The local scheduling transmission unit utilizes the MBS data after said bandwidth of air-interface will eat dishes without rice or wine to handle to transmit by numbered sequence according to said clock synchronization indication.
So far; Accomplished the MBS synchronization of data has been transmitted; If in the process to the MBS transfer of data, find step-out, the MBS data that then stop step-out in the present clock period immediately are in the transmission of eating dishes without rice or wine, and the sequence that is synchronized to the data designated block number in the next clock cycle is transmitted.
Wherein, receive the feedback about the transmission quality of eating dishes without rice or wine based on the center dispatch transmission unit from the local scheduling transmission unit, in the time of need not changing transmission parameter, center dispatch transmission unit and local scheduling transmission unit use this transmission parameter always before conversation end; When needing the said transmission parameter of change; Transmitting terminal is put to the local scheduling transmission unit with new transport parameters and new transport parameters entry-into-force time in the center dispatch transmission unit; The local scheduling transmission unit receives new transport parameters and new transport parameters entry-into-force time during point, brings into use new transmission parameter that the MBS data are eated dishes without rice or wine to handle in effective time point appointed.
Wherein, said local scheduling transmission unit is at least one base station, perhaps at least one wireless transmission unit except that the base station; Said center dispatch transmission unit is the manager of said local scheduling transmission unit.
Wherein, the numbering in the foregoing description 401,402 and 403 does not limit the sequential relationship that realizes process of the present invention.
The foregoing description can be found out because after the center dispatch transmission unit confirms the transmission parameter of MBS data; When transmission parameter does not change; Use this transmission parameter always; When changing the transmission parameter of MBS data, the transmission parameter after effective time point appointed is brought into use change has been realized the synchronous of transmission parameter; According to the session attribute of MBS, the scheduling parameter when confirming the MBS transfer of data utilizes said scheduling parameter to be MBS data allocations bandwidth of air-interface, has realized the synchronous of scheduling; The indication of periodic structure clock synchronization; Utilize the corresponding transmission parameter of present clock period that the corresponding MBS data of present clock of clock synchronization indication are handled; The sequential that realizes packet is synchronous; And utilize said bandwidth of air-interface that the MBS data after handling are carried out synchronous transmission, further realize the transmitting synchronous of MBS data.
Be that example is elaborated with the synchronous transmission between the base station under the multi-base station MBS pattern below:
The MBS zone is made up of a plurality of base stations; Form the physics covering space in the certain limit; The management work such as establishment, maintenance and deletion in MBS Zone life cycle are responsible in the MBS zone by a CST (Center Scheduler/Transmitter, center dispatch transmission unit).Each base station cooperates CST to accomplish MBS professional scheduling and transmission, and finally is implemented in the synchronous transmission on eating dishes without rice or wine.Below respectively from dispatch synchronously, transmission parameter synchronously and synchronous three aspects of package time sequence describe respectively:
A): scheduling is synchronous:
CST is according to the session attribute of MBS; The for example size of MBS packet, flow, QoS (Qualityof Service; Service quality); Confirm the scheduling parameter of MBS data through corresponding algorithm, for example with every frame distribute data block size of symbol offset or the symbolic number sign that takies, with position in frame of subchannel offset or the data block that takies the number of subchannels sign, with the schedule gap periods of scheduling MBS Frame gap periods sign and the scheduling starting point that identifies with initial clock cycle of scheduling or scheduling start frame.The base station is MBS data allocations bandwidth of air-interface from the conversation start point beginning of CST appointment according to said scheduling parameter; For example; The specified frame number of schedule gap periods of scheduling MBS Frame gap periods sign is brought into use in the base station from the conversation start point frame; Framing bit in appointment is changed to the bandwidth that the MBS traffic flow assignment is formulated size, in order to transmission MBS packet.
B): transmission parameter is synchronous:
Transmission parameter comprises coding parameter, modulation parameter, MAC parameter and other relevant parameter; In order to the processing of direct base station to the MBS data; For example, the MAC layer is handled, encodes, is modulated, and the transmission parameter of same MBS data is on all four between the base station that belongs to a MBS zone; The assurance that CST is responsible for the selection of transmission parameter and coordinates the synchronism of transmission parameter between the base station, operation such as comprise modification, abrogate.
Referring to Fig. 5, the signaling process figure the when transmission parameter that provides for the embodiment of the invention is synchronous:
501:CST is provided with the transmission parameter that broadcast/multi broadcast MBS is eating dishes without rice or wine;
502:CST starts the MBS session;
503: the base station brings into use during from the next one transmission parameter of CST appointment to handle the MBS data of input at the hour;
504: the base station receives the MBS data from CST;
505: the base station sends to the terminal through the MBS data that multicast connects reception, for example, and travelling carriage;
506: if CST need change certain MBS data at the transmission parameter of eating dishes without rice or wine, CST sends to the base station with new transmission parameter and the new argument entry-into-force time point of eating dishes without rice or wine;
507: the base station will bring into use new transmission parameter to handle the MBS data in effective time point appointed;
508: the base station receives the MBS data from CST;
509: the base station sends to the terminal through the MBS data that multicast connects reception, for example, and travelling carriage;
510:CST sends to the base station and stops MBS session instruction;
511: the base station sends to travelling carriage with the MBS session instruction that receives;
512: the base station begins to stop to handle the MBS data of input during from the next one hour.
C): package time sequence is synchronous:
The MBS packet is before being transferred to BS, and CST is cut apart or amalgamation the MBS packet, and tectonic energy is in the DB that eats dishes without rice or wine to transmit (Data Block, data block), and posttectonic data block size should be able to guarantee in same radio frames, to send to travelling carriage;
CST will construct good data block and number by certain strategy, and numbering is attached on the head of data block, and CST sends to the base station with good data block by the numbering size order;
In the starting point of each clock cycle, CST will construct the indication of clock synchronization, the data block that should send according to the next clock cycle of number order indication of data block;
The clock cycle is confirmed according to the whole network clock synchronized in the base station; Indicate according to this clock cycle and from the clock synchronization that CST receives; Confirm the data number sequence that in the next clock cycle, should send; When the base station receives the data block from CST, according to transmission parameter to the data block that receives carry out that MAC handles, coding, modulation, and certain location sends to travelling carriage by the numbered sequence of data block in specific frame;
If when transmission data block, found step-out, the MBS data block that then stops step-out in this clock cycle immediately is in the transmission of eating dishes without rice or wine, and is synchronized on the data block numbering sequence of CST indication in the next clock cycle.
In addition; When the MBS zone changes, there have new travelling carriage to add to be fashionable, then initiate travelling carriage should keep with former MBS zone in other travelling carriage synchronous; For example; Monitoring is from the indication of the clock synchronization of CST, and when listening to first clock synchronization indication, in the next clock cycle by the MBS data block numbering order of clock indication synchronously in that to eat dishes without rice or wine to transmit the MBS data fast.
The embodiment of the invention is to the synchronous method that a kind of synchronous transmission also is provided of scheduling, and is specific as follows:
The scheduling parameter of MBS session when eating dishes without rice or wine to transmit confirmed according to the session attribute and the interface-free resources behaviour in service information that comprise MBS in the center dispatch transmission unit;
The local scheduling transmission unit is from the conversation start point beginning of center dispatch transmission unit appointment; According to the position that comprises each scheduling unit in the said scheduling parameter and size, scheduling starting point and dispatching cycle, between the MBS session MBS distribution of flows bandwidth of air-interface;
The local scheduling transmission is according to said bandwidth of air-interface transmission MBS data.
The embodiment of the invention also provides a kind of method of synchronous transmission synchronously to the data block sequential, comprising:
The center dispatch transmission unit is cut apart the MBS data, is constructed to be permeable in the data block transmitted of eating dishes without rice or wine, and the data block of constructing is numbered; And periodically construct clock synchronization indication, in order to the mapping relations between telltable clock cycle and the sequence of blocks of data, and said clock synchronization indication sent to the local scheduling transmission unit;
The local scheduling transmission unit sends the MBS data after eating dishes without rice or wine to handle according to said clock synchronization indication and data block numbering sequence.
The embodiment of the invention also provides a kind of method of synchronous transmission synchronously to transmission parameter, comprising:
The center dispatch transmission unit confirms that the MBS session at the transmission parameter of eating dishes without rice or wine, sends to the local scheduling transmission unit with said transmission parameter;
The local scheduling transmission unit sends the feedback information that comprises the relevant transmission quality of eating dishes without rice or wine to the center dispatch transmission unit;
When the center dispatch transmission unit needs the said transmission parameter of change based on said feedback information judgement, confirm new transmission parameter and new transport parameters and new transport parameters entry-into-force time point are sent to the local scheduling transmission unit;
The transmission parameter that the utilization of local scheduling transmission unit receives eats dishes without rice or wine to handle to the MBS data; And comprise resource allocation conditions and the information of the transmission quality of eating dishes without rice or wine to said transmitting and scheduling control unit feedback; When receiving new transport parameters and new transport parameters entry-into-force time when point, bring into use new transmission parameter that the MBS data are eated dishes without rice or wine to handle in effective time point appointed.
Above embodiment can find out that the embodiment of the invention has realized the quick isochronous schedules to the MBS Business Stream through scheduling synchronously, has reduced center dispatch transmission unit and the base station coupling in scheduling that is used to dispatch and control the base station; Through cooperating of package number and clock synchronization indication; Realized the synchronous of MBS package time sequence; Reduce the influence that center dispatch transmission unit and base station step-out bring on the one hand, avoided center dispatch transmission unit and the base station close-coupled on sequential on the other hand; Rational division of work through center dispatch transmission unit and base station with cooperate, realized transmission parameter synchronously; Thereby realized transmission MBS data sync between many base stations, and in transmission, guaranteed strict sequential relationship between center dispatch transmission unit and the base station, reduced the complexity that system realizes.
More than the method and system of a kind of synchronous transmission provided by the present invention has been carried out detailed introduction; Used concrete example among this paper 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 on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (16)
1. the system of a synchronous transmission is characterized in that, comprising: center dispatch transmission unit, local scheduling transmission unit;
The center dispatch transmission unit comprises: the transmitting and scheduling control unit that is used to confirm, adjust, safeguard transmission parameter and scheduling parameter; Be used for periodic structure and send the synchronous indicating member of clock synchronization indication; Be used for the MBS packet be divided into data block, to the data block number and by the transmission processing unit of data block numbering sequence transmission MBS data;
The local scheduling transmission unit comprises: the receiving element that is used to receive said transmission parameter, scheduling parameter, clock synchronization indication and data block; Be used for according to said scheduling parameter is the bandwidth of air-interface scheduling unit of MBS data allocations bandwidth of air-interface; Be used for the transmission processing unit of eating dishes without rice or wine of the MBS data being eated dishes without rice or wine to handle according to said transmission parameter; Be used for utilizing said bandwidth of air-interface to send the data block synchronous processing unit of eating dishes without rice or wine through the MBS data of eating dishes without rice or wine to handle according to said clock synchronization indication and data block numbering sequence.
When the transmission parameter between the said local scheduling transmission unit is synchronous:
The transmitting and scheduling control unit is used for confirming that the MBS session at the transmission parameter of eating dishes without rice or wine, sends to the local scheduling transmission unit with said transmission parameter; Based on the feedback information that comprises the relevant transmission quality of eating dishes without rice or wine that receives from the local scheduling transmission unit, when needing the said transmission parameter of change, confirm new transmission parameter and new transport parameters and new transport parameters entry-into-force time point are sent to the local scheduling transmission unit;
The transmission processing unit of eating dishes without rice or wine; Be used to utilize the transmission parameter of reception that the MBS data are eated dishes without rice or wine to handle; And comprise resource allocation conditions and the quality information of the transmission parameter of eating dishes without rice or wine to said transmitting and scheduling control unit feedback; When receiving new transport parameters and new transport parameters entry-into-force time when point, bring into use new transmission parameter that the MBS data are eated dishes without rice or wine to handle in effective time point appointed.
2. according to the said system of claim 1, its spy is, when the scheduling parameter between the said local scheduling transmission unit is synchronous:
The transmitting and scheduling control unit is used for according to the session attribute of MBS and comprises interface-free resources behaviour in service information, confirms the scheduling parameter of MBS session when eating dishes without rice or wine to transmit;
The bandwidth of air-interface scheduling unit; Be used for conversation start point beginning from the appointment of center dispatch transmission unit; According to the position that comprises each scheduling unit in the said scheduling parameter with the size, the scheduling starting point and dispatching cycle information, be MBS distribution of flows bandwidth of air-interface between the MBS session.
3. system according to claim 1 is characterized in that, when the transfer of data sequential is synchronous between the said local scheduling transmission unit:
Transmission processing unit is used for the MBS data are cut apart, and is constructed to be permeable in the data block transmitted of eating dishes without rice or wine, and the data block of constructing is numbered;
Indicating member is used for periodic structure and sends the clock synchronization indication, and said clock synchronization indication is sent to local scheduling transmission unit, the mapping relations between telltable clock cycle and the sequence of blocks of data synchronously;
The transmission processing unit of eating dishes without rice or wine is used to utilize said transmission parameter that the MBS data are eated dishes without rice or wine to handle;
The data block of eating dishes without rice or wine synchronous processing unit is used for utilizing said bandwidth of air-interface to send the MBS data after eating dishes without rice or wine to handle according to said clock synchronization indication and data block numbering sequence.
4. according to any described system of claim 1 to 3, it is characterized in that said local scheduling transmission unit is at least one base station, perhaps at least one wireless transmission unit except that the base station.
5. the equipment of a synchronous transmission is characterized in that, comprising:
Receiving element is used to receive transmission parameter, scheduling parameter, clock synchronization indication and data block;
The bandwidth of air-interface scheduling unit, being used for according to said scheduling parameter is MBS data allocations bandwidth of air-interface;
The transmission processing unit of eating dishes without rice or wine is used for according to said transmission parameter the MBS data being eated dishes without rice or wine to handle;
The said transmission processing unit of eating dishes without rice or wine; Specifically be used for transmission parameter between the local scheduling transmission unit when synchronous; Utilize the transmission parameter that receives that the MBS data are eated dishes without rice or wine to handle; And comprise resource allocation conditions and the quality information of the transmission parameter of eating dishes without rice or wine to transmitting and scheduling control unit feedback, when receiving new transport parameters and new transport parameters entry-into-force time during point, bring into use new transmission parameter that the MBS data are eated dishes without rice or wine to handle in effective time point appointed;
The data block of eating dishes without rice or wine synchronous processing unit is used for utilizing said bandwidth of air-interface to send the MBS data through eating dishes without rice or wine to handle according to said clock synchronization indication and data block numbering sequence.
6. the device of a synchronous transmission is characterized in that, comprising:
The transmitting and scheduling control unit is used to confirm, adjusts, safeguards transmission parameter and scheduling parameter; When the transmission parameter between the device of synchronous transmission was synchronous: said transmitting and scheduling control unit was used for confirming that the MBS session at the transmission parameter of eating dishes without rice or wine, sends to said transmission parameter in the device of synchronous transmission; Based on the feedback information that comprises the relevant transmission quality of eating dishes without rice or wine that receives from the device of synchronous transmission, when needing the said transmission parameter of change, confirm new transmission parameter and new transport parameters and new transport parameters entry-into-force time point sent to the device of synchronous transmission;
Indicating member is used for periodic structure and sends clock synchronization indication, the mapping relations between telltable clock cycle and the sequence of blocks of data synchronously;
Transmission processing unit is used for the MBS packet is divided into data block, numbers sequence transmission MBS data to the data block number and by data block.
7. device according to claim 6 is characterized in that, said device further comprises:
Session management unit is used for through said transmitting and scheduling control unit, synchronous indicating member and transmission processing unit, management broadcast/multi broadcast business MBS session.
8. the method for a synchronous transmission is characterized in that, comprising:
The center dispatch transmission unit confirms and sends the MBS data at the transmission parameter of eating dishes without rice or wine that the local scheduling transmission unit receives said transmission parameter, and utilizes said transmission parameter that the MBS data are eated dishes without rice or wine to handle;
The scheduling parameter of MBS data is confirmed according to the attribute and the interface-free resources behaviour in service of MBS session in the center dispatch transmission unit, and the local scheduling transmission unit is a MBS distribution of flows bandwidth of air-interface according to said scheduling parameter;
Cut apart the MBS data, number the center dispatch transmission unit; And periodically construct and send clock synchronization and indicate; The local scheduling transmission unit utilizes the MBS data after said bandwidth of air-interface is handled eating dishes without rice or wine to transmit by numbered sequence according to said clock synchronization indication.
Confirm the transmission parameter of MBS data, further comprise:
The center dispatch transmission unit receives the feedback of the relevant transmission quality of eating dishes without rice or wine from the local scheduling transmission unit, when needing the said transmission parameter of change, with new transport parameters and new transport parameters entry-into-force time point transmitting terminal to the local scheduling transmission unit;
The local scheduling transmission unit receives new transport parameters and new transport parameters entry-into-force time during point, brings into use new transmission parameter that the MBS data are eated dishes without rice or wine to handle in effective time point appointed.
9. method according to claim 8 is characterized in that, said local scheduling transmission unit is a MBS data allocations bandwidth of air-interface according to said scheduling parameter, comprising:
The local scheduling transmission unit begins every at a distance from the specified frame number of said scheduling parameter from the conversation start point frame, be changed to the bandwidth of air-interface of MBS data allocations appointment size at the framing bit of appointment.
10. method according to claim 8 is characterized in that, saidly utilizes said transmission parameter that the MBS data are eated dishes without rice or wine to handle, and comprising:
The local scheduling transmission unit carries out MAC to the MBS packet and handles, encodes, modulates.
11. method according to claim 8 is characterized in that, saidly utilizes the MBS data after said bandwidth of air-interface will eat dishes without rice or wine to handle to send by numbering, further comprises:
If step-out takes place during to the MBS transfer of data, then stop the transmission of eating dishes without rice or wine, and be synchronized on the specified MBS data number sequence of clock synchronization indication in the next clock cycle to the MBS data of step-out in the present clock period.
12. method according to claim 8 is characterized in that, said local scheduling transmission unit is at least one base station, perhaps at least one wireless transmission unit except that the base station.
13. method according to claim 8 is characterized in that, said scheduling parameter includes but not limited to the position and size, scheduling starting point and dispatching cycle of each scheduling unit.
14. the method for a synchronous transmission is characterized in that, comprising:
The center dispatch transmission unit confirms that the MBS session at the transmission parameter of eating dishes without rice or wine, sends to the local scheduling transmission unit with said transmission parameter;
The local scheduling transmission unit sends the feedback information that comprises the relevant transmission quality of eating dishes without rice or wine to the center dispatch transmission unit;
When the center dispatch transmission unit needs the said transmission parameter of change based on said feedback information judgement, confirm new transmission parameter and new transport parameters and new transport parameters entry-into-force time point are sent to the local scheduling transmission unit;
The transmission parameter that the utilization of local scheduling transmission unit receives eats dishes without rice or wine to handle to the MBS data; And comprise resource allocation conditions and the information of the transmission quality of eating dishes without rice or wine to transmitting and scheduling control unit feedback; When receiving new transport parameters and new transport parameters entry-into-force time when point, bring into use new transmission parameter that the MBS data are eated dishes without rice or wine to handle in effective time point appointed.
15. the method for a synchronous transmission is characterized in that, comprising:
The scheduling parameter of MBS session when eating dishes without rice or wine to transmit confirmed according to the session attribute and the interface-free resources behaviour in service information that comprise MBS in the center dispatch transmission unit;
The local scheduling transmission unit is from the conversation start point beginning of center dispatch transmission unit appointment; According to the position that comprises each scheduling unit in the said scheduling parameter and size, scheduling starting point and dispatching cycle, between the MBS session MBS distribution of flows bandwidth of air-interface;
The local scheduling transmission is according to said bandwidth of air-interface transmission MBS data.
16. the method for a synchronous transmission is characterized in that, comprising:
Transmission parameter and scheduling parameter are confirmed, adjust, safeguarded in the center dispatch transmission unit; Periodic structure also sends the clock synchronization indication; The MBS packet is divided into data block, numbers sequence transmission MBS data to the data block number and by data block; Specifically comprise when the transfer of data sequential is synchronous between the local scheduling transmission unit: the MBS data are cut apart, be constructed to be permeable to, the data block of constructing is numbered in the data block transmitted of eating dishes without rice or wine; And periodically construct clock synchronization indication, in order to the mapping relations between telltable clock cycle and the sequence of blocks of data, and said clock synchronization indication sent to the local scheduling transmission unit;
The local scheduling transmission unit receives said transmission parameter, scheduling parameter, clock synchronization indication and data block; According to said scheduling parameter is MBS data allocations bandwidth of air-interface; Utilize said transmission parameter that the MBS data are eated dishes without rice or wine to handle; According to said clock synchronization indication and data block numbering sequence, utilize said bandwidth of air-interface to send MBS data through eating dishes without rice or wine to handle; When the transfer of data sequential is synchronous between said local scheduling transmission unit, the MBS data are eated dishes without rice or wine to handle according to said transmission parameter; According to said clock synchronization indication and sequence of blocks of data, send the MBS data after eating dishes without rice or wine to handle.
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Cited By (1)
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| CN102271308B (en) * | 2010-06-07 | 2014-11-05 | 华为技术有限公司 | Data transmission method, base station and terminal |
| CN105117401B (en) * | 2015-07-15 | 2018-05-08 | 天脉聚源（北京）教育科技有限公司 | A kind of method, apparatus and system of parallel transmission picture |
| US11510164B2 (en) | 2018-04-02 | 2022-11-22 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and device for synchronous broadcasting transmission signal block |
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