CN101179370B - Signal synchronous transmission method, system and device - Google Patents
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- CN101179370B CN101179370B CN200610114500A CN200610114500A CN101179370B CN 101179370 B CN101179370 B CN 101179370B CN 200610114500 A CN200610114500 A CN 200610114500A CN 200610114500 A CN200610114500 A CN 200610114500A CN 101179370 B CN101179370 B CN 101179370B
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Abstract
The invention discloses a method, a system and a device for sending signals synchronously. The invention aims to solve the problem in prior art that the complex treatment process regarding sending broadcast signals synchronously. In the invention, the frame numbers of a plurality of transceivers are set at the same time. The method includes the following steps: A. a data distribution entity obtains the sending frame numbers of transceiver sending signal according to the transmission time delay between the data distribution entity and the transceiver as well as the difference in frame numbers of the data distribution entity and the transceiver at the same time, and sends the frame numbers and the broadcast service data that need sending to the transceiver. B. each transceiver sends the broadcast service data according to the corresponding sending frame numbers. The invention can be used for sending broadcast signal synchronously and can simplify the treatment process regarding sending broadcast signals synchronously.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of signal synchronous transmission method, system and device.
Background technology
Broadcasting service sends with broadcast mode by air interface in the wireless communication system at present, the range of transmission of broadcasting service is greater than a sub-district generally speaking, therefore for convenience terminal aloft interface the broadcasting service signal that a plurality of sub-districts send is merged, the broadcasting service in the wireless communication system need realize the synchronous of signal transmission in a big way in.
What signal sent synchronously need be at single-frequency network (SFN, Single Frequency Network) realizes under the condition, described SFN is meant in the overlay area of a certain broadcasting service, all sub-districts in the identical time, utilize identical physical resource to send identical broadcasting service.
In order to realize SFN, network guarantees that when sending signal physical layer frame is necessary synchronously, so-called physical layer frame is meant that synchronously each sub-district requires to guarantee that the frame starting point time of the every 10ms of physical layer is in full accord in the SFN zone, and the clock that is to say each sub-district is synchronous.About some synchronous implementation method most convenients of physical layer frame be exactly that each sub-district transceiver all adopts same timing system, as global positioning system (GPS, Global Position System).Described transceiver is used for sending broadcast service data to user terminal.For example, all there is a GPS timing device each base station of TDD system, accurate timing by GPS has just guaranteed that the clock of each base station all is a precise synchronization, base station so described here is exactly a transceiver, accordingly, the data distribution entity of transceiver upper level can be radio network controller (RNC, Radio Network Controler), and described data distribution entity is used for sending broadcast service data to transceiver.
It all is consistent at synchronization that present 3G system does not require the frame number of each transceiver, each transceiver all has the frame number of oneself, the data distribution entity also all has the frame number of oneself, for example, all there is the System Frame Number of oneself safeguarding (BFN, Node B Frame Number counter) base station, and this System Frame Number is that chronomere increases progressively with 10ms, the span of BFN is 0 to 4095, and the value of BFN is a cycle count.In addition, radio network controller also can be safeguarded a frame number (RFN, RNC Frame Number Counter).As shown in Figure 1, at synchronization, the corresponding relation schematic diagram of different BFN and RFN, as we can see from the figure, at synchronization, the BFN of different base stations is different.
Under the synchronous prerequisite of the physical layer frame of transceiver, as shown in Figure 2, be the schematic flow sheet of utilization existing techniques in realizing data sync distribution, realize that the data sync distribution may further comprise the steps:
Step 201: before sending broadcast service data, RNC sends the descendant node synchronous request signal constantly at T1; Each NodeB feeding back uplink sync response receives the time of described synchronous request signal, BFN when sending the time of upstream node sync response and sending this response comprising described each NodeB;
Step 202:RNC is according to the uplink synchronous response message of each NodeB feedback, and the time T 2 of receiving this information, calculate propagation delay time, this propagation delay time is to deduct time that NodeB receives the descendant node synchronous request signal value of T1 and T2 to deduct the mean value of value that NodeB sends the time of upstream node sync response;
RNC can obtain and corresponding RFN of this time according to the time that NodeB send the upstream node sync response, and calculated the difference of the BFN of RFN and NodeB according to the BFN that receives, thereby obtained the difference of the BFN of the RFN of synchronization and each NodeB respectively;
Step 203:RNC sends to each NodeB with the difference of the BFN of synchronization RFN and each NodeB, and each NodeB preserves the difference of synchronization RFN and the BFN of self;
Step 204:RNC is according to described propagation delay time, obtain the maximum of propagation delay time, it is the maximum transmitted time delay, add processing delay and some time margin of NodeB, determine the air interface transmitting time of broadcast service data, and convert the RFN of this transmitting time correspondence to, this RFN and broadcast service data are transmitted to each NodeB;
Step 205: each NodeB is according to the difference of the synchronization RFN that obtains in the RFN of the air interface transmitting time correspondence of broadcast service data and the step 203 and self BFN, convert the RFN of the air interface transmitting time correspondence of described broadcast service data the BFN of the air interface transmitting time correspondence of broadcast service data to, send described broadcast service data to user terminal according to this BFN.
Each transceiver in the existing wireless communications system is in the frame number difference of synchronization, cause in the processing procedure of signal Synchronization transmission, the data distribution entity need obtain the difference of the frame number of the frame number of synchronization data distribution entity and each transceiver, each transceiver need be preserved this difference, behind the frame number that receives the pairing data distribution entity of broadcasting service air interface transmitting time, need convert the frame number of self to.Therefore, the signal Synchronization of prior art sends complex disposal process.
Summary of the invention
The invention provides a kind of signal synchronous transmission method, system and device, in order to solve the problem of the complex disposal process that the signal Synchronization that exists in the prior art sends.
The inventive method is applied to contain in the system of data distribution entity and a plurality of transceivers, and the frame number of described a plurality of transceivers is set at synchronization identical, and this method comprises:
A. described data distribution entity is according to the difference of the frame number of the frame number of propagation delay time between described data distribution entity and the described transceiver and synchronization data distribution entity and transceiver, obtain the transmission frame number that transceiver sends signal, described transmission frame number and the broadcast service data that needs to send are sent to transceiver;
B. each transceiver sends described broadcast service data according to described transmission frame number.
The difference of the frame number of described synchronization data distribution entity and the frame number of transceiver is stored in the described data distribution entity in advance.
The difference of the frame number of described synchronization data distribution entity and the frame number of transceiver is to be obtained by described data distribution entity node synchronizing process by third generation partner protocol definition when wireless communication system moves.
The step that obtains the transmission frame number of described transceiver transmission signal in the steps A comprises:
A1, data distribution entity obtain the frame number of data distribution entity of the air interface transmitting time correspondence of transceiver broadcast service data according to the propagation delay time between described data distribution entity and the described transceiver;
A2, data distribution entity are according to the frame number of the data distribution entity of the air interface transmitting time correspondence of described transceiver broadcast service data, difference with the frame number of the frame number of synchronization data distribution entity and transceiver obtains the transmission frame number that transceiver sends signal.
The frame number of described a plurality of transceivers is set to the identical step of synchronization and comprises:
Dispose each transceiver and adopt same timing system, and the initial frame number that each transceiver is set is identical.
The difference of the frame number of synchronization data distribution entity and the frame number of transceiver is zero.
A kind of signal Synchronization transmitting system comprises data distribution entity and a plurality of transceiver, and wherein, the frame number of each transceiver is identical at synchronization,
Described data distribution entity, be used for difference according to the frame number of the propagation delay time between local and the described transceiver and local frame number of synchronization and transceiver, obtain the transmission frame number that described transceiver sends signal, described transmission frame number and the broadcast service data that needs to send are sent to transceiver;
Described transceiver is used for sending described broadcast service data according to described transmission frame number.
Described data distribution entity, be used for obtaining the local frame number of the air interface transmitting time correspondence of transceiver broadcast service data according to the propagation delay time between local and the described transceiver, again according to the difference of the frame number of local frame number of the described synchronization of this this locality frame number and self storage and transceiver, obtain the transmission frame number that transceiver sends signal, described transmission frame number and the broadcast service data that needs to send are sent to transceiver.
Described data distribution entity comprises core net and radio network controller, and described transceiver is the base station, wherein,
Described core net, be used for according to the local frame number of described synchronization of local frame number and self storage and the difference of base station frame number, obtain the transmission frame number of base station transmit signals, described transmission frame number and the broadcast service data that needs to send are sent to described radio network controller;
Described radio network controller is used for the broadcast service data of described transmission frame number and need transmission is sent to each base station.
Described data distribution entity is a radio network controller, and described transceiver is the base station.
Described data distribution entity obtains the difference of the frame number of local frame number of described synchronization and transceiver by the node synchronizing process of third generation partner protocol definition when operation.
A kind of transceiver links to each other with the data distribution entity, and this transceiver comprises:
First processing unit, be used to receive the frame number of air interface transmitting time correspondence of the broadcast service data of data distribution entity and this broadcast service data after, send described broadcast service data according to described frame number.
A kind of data distribution entity links to each other with a plurality of transceivers, and this data distribution entity comprises:
Second processing unit, be used for difference according to the frame number of the local frame number of the air interface transmitting time correspondence of broadcast service data and local frame number of synchronization and transceiver, obtain the frame number of transceiver of the air interface transmitting time correspondence of broadcast service data, the frame number and the broadcast service data of this transceiver sent to each transceiver.
Described second processing unit comprises:
Memory cell is used to store the difference of the frame number of local frame number of synchronization and transceiver;
The data forwarding unit, be used for difference according to the frame number of local frame number and local frame number of described synchronization and transceiver, acquisition is at the frame number of the transceiver of this transmitting time correspondence, and the frame number and the broadcast service data of the transceiver of this transmitting time correspondence sent to each transceiver.
Described second processing unit is used for obtaining by the node synchronizing process of third generation partner protocol definition in when operation the difference of the frame number of local frame number of described synchronization and transceiver.
Pre-configured each transceiver of the present invention adopts same timing system, and the initial frame number that each transceiver is set is identical, guaranteed that the frame number at each transceiver of synchronization is identical, the difference of the frame number of data distribution entity by obtaining or store in advance the frame number of the described data distribution entity of synchronization and described transceiver in when operation, and the frame number of the pairing data distribution entity of air interface transmitting time of described transceiver broadcast service data, obtain the transmission frame number that described transceiver sends signal, the broadcast service data of described transmission frame number and need transmission is sent to transceiver, each transceiver is by described transmission frame number synchronized transmission broadcast service data, the data distribution entity is calculated in the step of the difference of the frame number of the frame number of synchronization data distribution entity and transceiver only need carry out once, and the transmission frame number that sends to the transmission signal of transceiver is the frame number of the pairing transceiver of air interface transmitting time of broadcast service data, the transmission frame number of having avoided the needs of each transceiver will send signal converts the process of self frame number to, solved prior art owing to frame number difference at each transceiver of synchronization, the problem of the complex disposal process of the broadcast service data synchronized transmission that causes, therefore, by scheme provided by the invention, simplify the processing procedure of broadcast service data synchronized transmission, optimized wireless communication system.
Description of drawings
Fig. 1 is the different B FN of synchronization different base station and the corresponding relation schematic diagram of RFN;
Fig. 2 is the schematic flow sheet of existing techniques in realizing data sync distribution;
Fig. 3 is the schematic flow sheet of the inventive method;
Fig. 4 is synchronization BFN of embodiment of the inventive method and the corresponding relation schematic diagram of RFN;
Fig. 5 is the schematic flow sheet of the embodiment of the inventive method;
Fig. 6 is the structural representation of system of the present invention;
Fig. 7 is embodiments of systems of the invention's a structural representation;
Fig. 8 is the structural representation of the embodiment of transceiver of the present invention;
Fig. 9 is the structural representation of the embodiment of data distribution entity of the present invention.
Embodiment
Core concept of the present invention is: adopt same timing system at each transceiver, guarantee under the synchronous prerequisite of each transceiver physical layer frame, it is identical that initial frame number is set in each transceiver, makes each transceiver utilize described same timing system can keep the frame number of each transceiver of synchronization identical; Described data distribution entity is according to the difference of the frame number of the frame number of propagation delay time between described data distribution entity and the described transceiver and synchronization data distribution entity and transceiver, obtain the transmission frame number that transceiver sends signal, the broadcast service data of described transmission frame number and need transmission is sent to each transceiver, each transceiver sends the described broadcast service data of transmission frame number synchronized transmission of signal according to described transceiver, thereby avoided the data distribution entity need calculate difference loaded down with trivial details of the frame number of the frame number of this data distribution entity and each transceiver, simplify the handling process of broadcast service data synchronized transmission, optimized wireless communication system;
Wherein, obtaining the step that described transceiver sends the transmission frame number of signal can comprise:
The data distribution entity is according to the frame number of the data distribution entity of the air interface transmitting time correspondence of the acquisition of the propagation delay time between described data distribution entity and described transceiver transceiver broadcast service data;
The data distribution entity is according to the frame number of the data distribution entity of the air interface transmitting time correspondence of described transceiver broadcast service data, difference with the frame number of the frame number of synchronization data distribution entity and transceiver obtains the transmission frame number that transceiver sends signal.
Referring to Fig. 3, the inventive method comprises:
S301, dispose each transceiver and adopt same timing system, and the initial frame number that each transceiver is set is identical;
Each transceiver utilizes described same timing system to keep the frame number of each transceiver of synchronization identical;
The difference of the frame number of S302, the described data distribution entity of data distribution entity acquisition synchronization and the frame number of described transceiver;
The difference of the frame number of described synchronization data distribution entity and the frame number of described transceiver is the value that the frame number of synchronization data distribution entity deducts the frame number of described transceiver, also can deduct the value of the frame number of data distribution entity for the frame number of the described transceiver of synchronization, this value can be zero, and promptly the frame number of synchronization data distribution entity is identical with the frame number of described transceiver;
Described data distribution entity is the node synchronizing process by third generation partner protocol definition when wireless communication system moves, and obtains the difference of the frame number of the frame number of described data distribution entity and described each transceiver;
The difference of the frame number of the described data distribution entity of described synchronization and the frame number of described transceiver also can be stored in the described data distribution entity in advance;
S303, described data distribution entity obtain the frame number in the data distribution entity of the air interface transmitting time of broadcast service data, and according to the difference of the frame number of the frame number of described synchronization data distribution entity and transceiver, transceiver sends the transmission frame number of signal, and described transmission frame number and the broadcast service data that needs to send are sent to transceiver;
The air interface transmitting time of described broadcast service data obtains through following steps:
The data distribution entity sends the descendant node synchronization request to each transceiver, preserve the time of this request of transmission simultaneously, and obtain the uplink synchronous response that described each transceiver sends, comprise in this response that each transceiver receives the time of described request and the time of the described response of transmission;
The data distribution entity obtains data each propagation delay time between described data distribution entity and described each transceiver according to the time that the time that sends described synchronization request, time that each transceiver receives described synchronization request, time that each transceiver sends described sync response and this data distribution entity receive described response;
Described data distribution entity obtains maximum transmitted time delay according to described each propagation delay time, and determines the air interface transmitting time of described transceiver broadcast service data according to the summation of the processing delay of this maximum transmitted time delay, transceiver and time margin; Wherein, described maximum transmitted time delay is the maximum in described each propagation delay time; The processing delay of described transceiver for after transceiver receives data, is handled the needed time to data; Described time margin is the aggregated error value of the error amount of the processing delay of the error amount of described maximum transmitted time delay and described transceiver;
S304, each transceiver send described broadcast service data by described transmission frame number;
Wherein, described data distribution entity can be core net or radio network controller, when described data distribution entity is core net, when described transceiver is the base station, described propagation delay time is the data transmission delay between core net and the radio network controller and the summation of the data transmission delay between radio network controller and the base station, core net calculates the transmitting time of eating dishes without rice or wine of broadcast service data according to this total propagation delay time, and the BFN of this time, and this BFN and broadcast service data be transmitted to described each base station;
When described data distribution entity was radio network controller, described transceiver was the base station, and data distribution entity and transceiver also can be other the broadcast entity that is used for realizing broadcasting service certainly.
The specific embodiment of the inventive method, when the data distribution entity is a radio network controller, when transceiver is the base station, the GPS timing system is adopted in each base station, it is identical setting in advance at the BFN of the time that the GPS timing system begins to count in each base station, makes each base station utilize described GPS timing system can keep the BFN of each base station of synchronization identical;
Wherein, described GPS, it is an accurate timing system, whole system is from January 6,1980 at00:00:00 GMT begin counting, be to be that 0: 00 of on January 6th, 1980 is wonderful the described time that begins to count, every mistake added one in one second, and regularly this count information is sent, all there is a GPS receiving system each base station, so each base station can calculate the current time according to this count information, so, just can predesignate January 6,1980 at 00:00:00 GMT System Frame Number BFN constantly is 0, and the length of BFN is all the same with the time interval, the every 10ms of BFN adds 1, the length of BFN is 4096, from 0 to 4095 circulation, and each sub-district can be according to following formula so:
BFN＝((GPS?time*100)mod(4096))
Calculate the BFN of current time, wherein, GPS time is GPS from time of beginning to count second number of process up to the present;
Radio network controller obtains the difference of synchronization RFN and BFN, referring to Fig. 4, is the corresponding relation schematic diagram of the RFN of the BFN of each base station of synchronization and radio network controller;
Described radio network controller is the node synchronizing process that defines by 3GPP when wireless communication system moves, and obtains the difference of synchronization RFN and BFN;
Referring to Fig. 5, realize that the method for broadcast service data synchronized transmission comprises:
Step 501:
RNC sends the descendant node synchronization request to each Node B, and preservation simultaneously sends the time of this request, and obtains the uplink synchronous response that described each Node B sends, and receives the time of described request and the time of the described response of transmission comprising each Node B;
Step 502:
RNC obtains data each propagation delay time between described RNC and described each Node B according to the time that the time that sends described synchronization request, time that each Node B receives described synchronization request and each Node B send described sync response;
RNC obtains the air interface transmitting time of broadcast service data according to processing delay and the time surplus of described maximum transmitted time delay, Node B; Wherein, described maximum transmitted time delay is the maximum in described each propagation delay time; The processing delay of described base station for after the base station receives data, is handled the needed time to data; Described time margin is the aggregated error value of the error amount of the processing delay of the error amount of described maximum transmitted time delay and described base station;
Step 503:
RNC obtains the pairing RFN of air interface transmitting time of described broadcast service data, and according to the synchronization RFN of storage in advance and the difference of BFN, and, this BFN and broadcast service data are sent to each Node B at the pairing BFN of air interface transmitting time that the described RFN of this transmitting time correspondence obtains broadcast service data;
Step 504:
Each Node B sends described broadcast service data according to the pairing BFN of air interface transmitting time of described broadcast service data when this BFN arrives.
Referring to Fig. 6, system of the present invention comprises: comprise data distribution entity 61 and a plurality of transceiver 62;
Wherein, the frame number at each transceiver 62 of synchronization is identical;
Described data distribution entity 61, difference according to the frame number of the frame number of the described synchronization data distribution entity of the frame number of this data distribution entity and self storage and transceiver, obtain the transmission frame number that described transceiver 62 sends signal, this transmission frame number and the broadcast service data that needs to send are sent to each transceiver 62;
Described transceiver 62 sends described broadcast service data according to described transmission frame number;
Wherein, described data distribution entity 61 also can be in when operation the node synchronizing process by third generation partner protocol definition obtain the difference of the frame number of the frame number of described synchronization data distribution entity and transceiver;
Described data distribution entity 61 can be radio network controller, and described transceiver 62 can be the base station.
When the data distribution entity comprises core net and radio network controller, when described transceiver was the base station, referring to Fig. 7, system of the present invention specifically comprised: core net 71, radio network controller 72 and base station 73;
Described core net 71, difference according to the frame number of local frame number of the described synchronization of local frame number and self storage and base station 73, obtain the pairing frame number of transmitting time of broadcast service data, the frame number and the broadcast service data of the base station 73 of this transmitting time correspondence sent to described radio network controller 72;
Described radio network controller 72 is used for the frame number and the broadcast service data of the base station 73 of this transmitting time correspondence are sent to each base station 73;
Wherein, the transmitting time of described broadcast service data is that the summation meter according to the data transmission delay between the data transmission delay between core net 71 and the radio network controller 72 and radio network controller 72 and the base station 73 calculates;
Data distribution entity and transceiver also can be used to realize the broadcast entity of broadcasting service for other, adopt at each transceiver under the prerequisite of same timing system, frame number by each transceiver can realize simplifying the processing procedure of broadcasting service synchronized transmission in the identical scheme of synchronization.
Referring to Fig. 8, be the structural representation of a kind of transceiver of the present invention, a kind of transceiver 81 that links to each other with the data distribution entity comprises: first processing unit 811;
Described first processing unit 811, receive the frame number of transmitting time correspondence of the broadcast service data of data distribution entity and broadcast service data after, send described broadcast service data to user terminal according to described frame number.
Referring to Fig. 9, be the structural representation of a kind of data distribution entity of the present invention, the data distribution entity 91 that links to each other with a plurality of transceivers comprises second processing unit 911;
Described second processing unit 911 comprises: memory cell 9111 and data forwarding unit 9112;
Described second processing unit 911, according to the difference of local frame number with the frame number of the synchronization this locality frame number self stored and transceiver, acquisition is at the frame number of the transceiver of the air interface transmitting time correspondence of broadcast service data, and the frame number and the broadcast service data of the transceiver of this transmitting time correspondence sent to each transceiver;
Wherein, described memory cell 9111 is used to store the difference of the frame number of the local frame number of described synchronization of local frame number and self storage and transceiver;
Described data forwarding unit 9112, be used for difference according to the frame number of local frame number and local frame number of described synchronization and transceiver, acquisition is at the frame number of the transceiver of the air interface transmitting time correspondence of broadcast service data, and the frame number and the broadcast service data of the described transceiver of this transmitting time correspondence sent to each transceiver.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (15)
1. a signal synchronous transmission method is applied to contain in the system of data distribution entity and a plurality of transceivers, it is characterized in that the frame number of described a plurality of transceivers is set at synchronization identical, and this method comprises:
A. described data distribution entity is according to the difference of the frame number of the frame number of propagation delay time between described data distribution entity and the described transceiver and synchronization data distribution entity and transceiver, obtain the transmission frame number that transceiver sends signal, described transmission frame number and the broadcast service data that needs to send are sent to transceiver;
B. each transceiver sends described broadcast service data according to described transmission frame number.
2. the method for claim 1 is characterized in that, the difference of the frame number of described synchronization data distribution entity and the frame number of transceiver is stored in the described data distribution entity in advance.
3. the method for claim 1, it is characterized in that the difference of the frame number of described synchronization data distribution entity and the frame number of transceiver is to be obtained by described data distribution entity node synchronizing process by third generation partner protocol definition when wireless communication system moves.
4. the method for claim 1 is characterized in that, the step that obtains the transmission frame number of described transceiver transmission signal in the steps A comprises:
A1, data distribution entity obtain the frame number of data distribution entity of the air interface transmitting time correspondence of transceiver broadcast service data according to the propagation delay time between described data distribution entity and the described transceiver;
A2, data distribution entity are according to the frame number of the data distribution entity of the air interface transmitting time correspondence of described transceiver broadcast service data, difference with the frame number of the frame number of synchronization data distribution entity and transceiver obtains the transmission frame number that transceiver sends signal.
5. the method for claim 1 is characterized in that, the frame number of described a plurality of transceivers is set to the identical step of synchronization and comprises:
Dispose each transceiver and adopt same timing system, and the initial frame number that each transceiver is set is identical.
6. the method for claim 1 is characterized in that, the difference of the frame number of synchronization data distribution entity and the frame number of transceiver is zero.
7. a signal Synchronization transmitting system comprises data distribution entity and a plurality of transceiver, it is characterized in that, wherein, the frame number of each transceiver is identical at synchronization,
Described data distribution entity, be used for difference according to the frame number of the propagation delay time between local and the described transceiver and local frame number of synchronization and transceiver, obtain the transmission frame number that described transceiver sends signal, described transmission frame number and the broadcast service data that needs to send are sent to transceiver;
Described transceiver is used for sending described broadcast service data according to described transmission frame number.
8. system as claimed in claim 7 is characterized in that,
Described data distribution entity, be used for obtaining the local frame number of the air interface transmitting time correspondence of transceiver broadcast service data according to the propagation delay time between local and the described transceiver, again according to the difference of the frame number of the local frame number of described synchronization of the local frame number of the air interface transmitting time correspondence of this transceiver broadcast service data and self storage and transceiver, obtain the transmission frame number that transceiver sends signal, described transmission frame number and the broadcast service data that needs to send are sent to transceiver.
9. system as claimed in claim 7 is characterized in that, described data distribution entity comprises core net and radio network controller, and described transceiver is the base station, wherein,
Described core net, be used for according to the local frame number of described synchronization of local frame number and self storage and the difference of base station frame number, obtain the transmission frame number of base station transmit signals, described transmission frame number and the broadcast service data that needs to send are sent to described radio network controller;
Described radio network controller is used for the broadcast service data of described transmission frame number and need transmission is sent to each base station.
10. system as claimed in claim 7 is characterized in that, described data distribution entity is a radio network controller, and described transceiver is the base station.
11. system as claimed in claim 7 is characterized in that, described data distribution entity obtains the difference of the frame number of local frame number of described synchronization and transceiver by the node synchronizing process of third generation partner protocol definition when operation.
12. a transceiver links to each other with the data distribution entity, it is characterized in that this transceiver comprises:
First processing unit, the frame number that is used for each transceiver that pre-configured self frame number links to each other with described data distribution entity is identical at synchronization; Behind the frame number of the air interface transmitting time correspondence of receiving broadcast service data that described data distribution entity sends and this broadcast service data, frame number according to described transmitting time correspondence sends described broadcast service data, wherein, the frame number of described transmitting time correspondence is described data distribution entity according to the difference acquisition of the propagation delay time between local and the described transceiver and the local frame number of synchronization and the frame number of transceiver.
13. a data distribution entity links to each other with a plurality of transceivers, it is characterized in that, this data distribution entity comprises:
Second processing unit, be used for difference according to the frame number of the local frame number of the air interface transmitting time correspondence of broadcast service data and local frame number of synchronization and transceiver, the frame number of the transceiver of the air interface transmitting time correspondence of acquisition broadcast service data, the frame number and the broadcast service data of the transceiver of this transmitting time correspondence are sent to each transceiver, wherein, the frame number of each transceiver is identical at synchronization, the frame number of the transceiver of the air interface transmitting time correspondence of described broadcast service data is used to indicate transceiver to send described broadcast service data according to the frame number of the transceiver of this transmitting time correspondence.
14. data distribution entity as claimed in claim 13 is characterized in that, described second processing unit comprises:
Memory cell is used to store the difference of the frame number of local frame number of synchronization and transceiver;
The data forwarding unit, be used for difference according to the frame number of local frame number and local frame number of described synchronization and transceiver, acquisition is at the frame number of the transceiver of this transmitting time correspondence, and the frame number and the broadcast service data of the transceiver of this transmitting time correspondence sent to each transceiver.
15. data distribution entity as claimed in claim 13, it is characterized in that, described second processing unit is used for obtaining by the node synchronizing process of third generation partner protocol definition in when operation the difference of the frame number of local frame number of described synchronization and transceiver.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1538639A (en) * | 1997-06-13 | 2004-10-20 | ����ɭ�绰�ɷ�����˾ | Method and devices in radio communication system |
| CN1735271A (en) * | 2005-06-30 | 2006-02-15 | 凯明信息科技股份有限公司 | Hard handoff method and device and TD-SCDMA system using same method and device |
Non-Patent Citations (1)
| Title |
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| JP特开2006-178114A 2006.07.06 |
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| CN101179370A (en) | 2008-05-14 |
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