CN101267247A - Iu interface time synchronization method and device - Google Patents
Iu interface time synchronization method and device Download PDFInfo
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- CN101267247A CN101267247A CNA2007100882115A CN200710088211A CN101267247A CN 101267247 A CN101267247 A CN 101267247A CN A2007100882115 A CNA2007100882115 A CN A2007100882115A CN 200710088211 A CN200710088211 A CN 200710088211A CN 101267247 A CN101267247 A CN 101267247A
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Abstract
The present invention discloses an Iu interface time synchronization method and a device thereof, wherein the method comprises the following procedures: when the broadcast or multiple-broadcast is transmitted on common channel and a wireless bearing is established, selecting a common time source for CN and RNC, transmitting a time enquiry request by a CN through each RNC related by the user orienting service and recording the current time of the CN; when each RNC receives the time enquiry request, respectively transmitting the current time of the RNC from the user orienting CN; when the CN receives the response from each RNC, calculating the time delay of each RNC according to the current time of the recorded CN and the current time of the received RNC; and calculating out the maximum time delay by the CN according to the time delay of each RNC, and calculating the transmitting time for transmitting the service data. The invention leads to that the data can synchronously arrive at the UE thereby realizing the combination of the physical layers and increasing the receiving quality of the service.
Description
Technical field
The present invention relates to the 3G (Third Generation) Moblie network field, more specifically, relate to a kind of Iu interface time synchronization method and device.
Background technology
Along with the commercialization of 3-G (Generation Three mobile communication system), the business of transmission broadcasting and multicast is more and more on common signal channel at present.Because mobile communication system in many-sided influences such as power, interference, for guaranteeing the quality of reception of this broadcasting service or multicast service, presses for when subscriber equipment (UE, User Equipment) receives, introduce the physical layer folding.Merge for introducing physical layer, just must guarantee that the signal of a plurality of sub-districts that UE received is to arrive UE synchronously, and the content of each sub-district emission is in full accord.
For existing universal mobile telecommunications system (UMTS, Universal MobileTelecommunication System) radio network controller (RNC in the network, RadioNetwork Controller) Nei Bu sub-district, because the resource of these sub-districts is all by a RNC unified management, therefore than minizone synchronous that is easier to realize in the RNC.But between RNC, because the data between each RNC are by core net (CN, CoreNetwork) send, just must realize striding the data sync of RNC, guarantee that time and content that CN arrives each RNC are synchronous, make RNC can guarantee that data can synchronized transmission, make these service signals arrive the time synchronized of UE by certain mode, thereby guarantee that UE can carry out physical layer and merge, therefore improved the professional quality of reception of UE.
In present UMTS network, also there is not the ripe synchronous technology of RNC of striding.Therefore be badly in need of wanting a kind of data synchronization technology of striding RNC.
Summary of the invention
The present invention proposes the data synchronization technology of a kind of RNC of striding, the node simultaneous techniques of Iub mouth (interface that connects NodeB and RNC) is extended, it is synchronous to do node at Iu mouth (interface between RNC and the CN), thereby guarantees to realize synchronously in time between CN and each RNC.
An aspect of of the present present invention provides a kind of Iu interface time synchronization method, can may further comprise the steps: step S102, when the transmission broadcast or multicast is professional on common signal channel, after radio bearer is set up, for core net and RNC selected one common time the source, core net is by each related radio network controller transmitting time query requests of user's service-oriented, and the current time of record core net; Step S104 after each radio network controller time of receipt (T of R) query requests, sends the current time of radio network controller respectively from the user towards core net; Step S106, core net receives from after the replying of each radio network controller, and according to the current time of current time of the core net that is write down and received radio network controller, calculates the time delay of each radio network controller; And step S108, core net calculates the maximum time delay according to the time delay of each radio network controller, and postpones to calculate the transmitting time of transmission business datum according to maximum time.
Wherein, in step S106, can also comprise following processing: core net judges whether to receive replying of all professional related each radio network controllers, replys if received all, then proceeds to step S108, otherwise, repeating step S106.
In addition, time delay can be the difference between current time of current time of core net and radio network controller.
Another aspect of the present invention provides a kind of Iu mouth time synchronism apparatus, can comprise: selected unit, be used to core net and RNC selected one common time the source; The query requests unit, be positioned on the core net, when being used on common signal channel, transmitting the broadcast or multicast business, after radio bearer is set up, by each related radio network controller transmitting time query requests of user's service-oriented, and the current time of record core net; Reply transmitting element, be used for after each radio network controller time of receipt (T of R) query requests, send the current time of radio network controller respectively from the user towards core net; The time delay computing unit, be used for receiving from after the replying of each radio network controller in core net, according to the current time of current time of the core net that is write down and received radio network controller, calculate the time delay of each radio network controller; And the transmitting time determining unit, be used for calculating the maximum time delay, and postpone to calculate the transmitting time of transmission business datum according to maximum time according to the time delay of each radio network controller.
Wherein, in the time delay computing unit, can also comprise: judging unit is used to judge whether to receive replying of all professional related each radio network controllers.Wherein,, then send instruction to the transmitting time determining unit if received replying of all radio network controllers, otherwise, the operation in the time delay computing unit continued.
In addition, time delay can be the difference between current time of current time of core net and radio network controller.
Use technology of the present invention, can be in the time synchronized of the existing transfer of data of Iu cause for gossip, and can be according to the time synchronously, in the CN transmitting time that the specified services data are being eated dishes without rice or wine when each RNC sends business datum, thereby guarantee that business datum arrives the time synchronized of UE, and then can realize merging in physical layer, improve quality of service.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart according to Iu interface time synchronization method of the present invention;
Fig. 2 is the block diagram according to Iu mouth time synchronism apparatus of the present invention; And
Fig. 3 is an operational flowchart of realizing striding the method for Iu mouth time synchronized according to an embodiment of the invention in the UMTS network.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Fig. 1 is the flow chart according to Iu interface time synchronization method of the present invention.As shown in Figure 1, the Iu interface time synchronization method may further comprise the steps:
Step S102, when the transmission broadcast or multicast is professional on common signal channel, after radio bearer is set up, for core net and RNC selected one common time the source, core net is by each related radio network controller transmitting time query requests of user's service-oriented, and the current time of record core net;
Step S104 after each radio network controller time of receipt (T of R) query requests, sends the current time of radio network controller respectively from the user towards core net;
Step S106, core net receives from after the replying of each radio network controller, and according to the current time of current time of the core net that is write down and received radio network controller, calculates the time delay of each radio network controller; And
Step S108, core net calculates the maximum time delay according to the time delay of each radio network controller, and postpones to calculate the transmitting time of transmission business datum according to maximum time.
Wherein, in step S106, also comprise following processing:
Core net judges whether to receive replying of all professional related each radio network controllers, replys if received all, then proceeds to step S108, otherwise, repeating step S106.
In addition, time delay is the difference between current time of current time of core net and radio network controller.
Fig. 2 is the block diagram according to Iu mouth time synchronism apparatus of the present invention.As shown in Figure 2, Iu mouth time synchronism apparatus 200 comprises: selected unit 202, be used to core net and RNC selected one common time the source; Query requests unit 204, be positioned on the core net, when being used on common signal channel, transmitting the broadcast or multicast business, after radio bearer is set up, by each related radio network controller transmitting time query requests of user's service-oriented, and the current time of record core net; Reply transmitting element 206, be used for after each radio network controller time of receipt (T of R) query requests, send the current time of radio network controller respectively from the user towards core net; Time delay computing unit 208, be used for receiving from after the replying of each radio network controller in core net, according to the current time of current time of the core net that is write down and received radio network controller, calculate the time delay of each radio network controller; And transmitting time determining unit 210, be used for calculating the maximum time delay, and postpone to calculate the transmitting time of transmission business datum according to maximum time according to the time delay of each radio network controller.
Wherein, in the time delay computing unit, also comprise: judging unit 2082 is used to judge whether to receive replying of all professional related each radio network controllers.Wherein,, then send instruction to transmitting time determining unit 210 if received replying of all radio network controllers, otherwise, the operation in the time delay computing unit 208 continued.
In addition, time delay is the difference between current time of current time of core net and radio network controller.
Fig. 3 is an operational flowchart of realizing striding the method for Iu mouth time synchronized according to an embodiment of the invention in the UMTS network.As shown in Figure 3, in the 3G (Third Generation) Moblie network, realize that the method for Iu mouth time synchronized comprises the following steps:
Step 302: the professional radio bearer (RAB) of broadcasting of launching on common signal channel or multicast service is set up and is finished, the common clock source of a selected CN and RNC, and CN initiates Iu mouth time synchronized flow process and begins;
Step 304:CN passes through user's face (IuUP) transmitting time query requests to each RNC that this business relates to, and the current time wCurrentTime of record CN;
Step 306: after each related RNC of this business received the time query requests of CN, each RNC that this business relates to reported the current time wRbTime of the professional radio bearer that this RNC should business from the user towards CN;
Step 308:CN receive RNC on call time after, CN receives the response time of RNC, according to local zone time wCurrentTIme that self preserves and the time wRbTime Iu computing time mouth time delay wRelayTime that receives, promptly the time postpones wRelayTime=wRbTime-wCurrentTIme);
Step 310:CN judges whether to receive the response of all RNC, if collect, CN calculates the transfer of data maximum time delay wMaxRelayTime of CN to each RNC according to the time delay of being calculated to each RNC, and preserve this maximum time and postpone. otherwise, change step 304 and continue to carry out.Iu mouth time synchronized flow process finishes.
When step 312:CN sent business datum, the specified services data guaranteed that in the launch time of eating dishes without rice or wine synchronizing traffic data arrives UE simultaneously.
In sum, the technology of using the present invention to propose, can be in the time synchronized of the existing transfer of data of Iu cause for gossip, and can be according to the time synchronously, in the CN transmitting time that the specified services data are being eated dishes without rice or wine when each RNC sends business datum, thereby guarantee that business datum arrives the time synchronized of UE, and then can realize merging, improve quality of service in physical layer.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. an Iu interface time synchronization method is characterized in that, may further comprise the steps:
Step S102, when the transmission broadcast or multicast is professional on common signal channel, after radio bearer is set up, for core net and RNC selected one common time the source, described core net by the user towards each related radio network controller transmitting time query requests of described business, and current time of writing down described core net;
Step S104, each described radio network controller receive after the described time query requests, send the current time of described radio network controller respectively towards described core net from the user;
Step S106, described core net receives from after the replying of each described radio network controller, according to the current time of current time of the described core net that is write down and received described radio network controller, calculate the time delay of each described radio network controller; And
Step S108, described core net calculates the maximum time delay according to the time delay of each described radio network controller, and postpones to calculate the transmitting time of transmission business datum according to described maximum time.
2. Iu interface time synchronization method according to claim 1 is characterized in that, in described step S106, also comprises following processing:
Described core net judges whether to receive replying of each radio network controller that all described business are related, replys if received all, then proceeds to described step S108, otherwise, repeating said steps S106.
3. Iu interface time synchronization method according to claim 1 and 2 is characterized in that, described time delay is the difference between current time of current time of described core net and described radio network controller.
4. an Iu mouth time synchronism apparatus is characterized in that, comprising:
Selected unit, be used to core net and RNC selected one common time the source;
The query requests unit, be positioned on the core net, when being used on common signal channel, transmitting the broadcast or multicast business, after radio bearer is set up, by the user towards each related radio network controller transmitting time query requests of described business, and current time of writing down described core net;
Reply transmitting element, be used for after each described radio network controller is received described time query requests, send the current time of described radio network controller respectively from the user towards described core net;
The time delay computing unit, be used for receiving from after the replying of each described radio network controller in described core net, according to the current time of current time of the described core net that is write down and received described radio network controller, calculate the time delay of each described radio network controller; And
The transmitting time determining unit is used for calculating the maximum time delay according to the time delay of each described radio network controller, and postpones to calculate the transmitting time of transmission business datum according to described maximum time.
5. Iu mouth time synchronism apparatus according to claim 4 is characterized in that, in the time delay computing unit, also comprises:
Judging unit is used to judge whether to receive replying of each radio network controller that all described business are related,
Wherein, if received replying of all described radio network controllers,
Then send instruction to described transmitting time determining unit, otherwise, the operation in the described time delay computing unit continued.
6. according to claim 4 or 5 described Iu mouth time synchronism apparatus, it is characterized in that,
Described time delay is the difference between current time of current time of described core net and described radio network controller.
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| CN200710088211A CN101267247B (en) | 2007-03-15 | 2007-03-15 | Iu interface time synchronization method and device |
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| CN200710088211A CN101267247B (en) | 2007-03-15 | 2007-03-15 | Iu interface time synchronization method and device |
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| CN101267247B CN101267247B (en) | 2012-09-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109739149A (en) * | 2019-01-23 | 2019-05-10 | 苏州蓝石新动力有限公司 | A vehicle-mounted synchronization control method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1897745A (en) * | 2005-07-15 | 2007-01-17 | 北京三星通信技术研究有限公司 | Equilibrium method for transmitting MBMS service data |
| CN100571462C (en) * | 2005-09-13 | 2009-12-16 | 华为技术有限公司 | Method for obtaining interface transmission delay between radio network controller and base station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109739149A (en) * | 2019-01-23 | 2019-05-10 | 苏州蓝石新动力有限公司 | A vehicle-mounted synchronization control method and device |
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