CN101039175A - Method and system for synchronizing RLC in wireless network controllers - Google Patents
Method and system for synchronizing RLC in wireless network controllers Download PDFInfo
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- CN101039175A CN101039175A CNA200710086952XA CN200710086952A CN101039175A CN 101039175 A CN101039175 A CN 101039175A CN A200710086952X A CNA200710086952X A CN A200710086952XA CN 200710086952 A CN200710086952 A CN 200710086952A CN 101039175 A CN101039175 A CN 101039175A
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Abstract
The invention discloses a method and system to achieve a wireless link control sequence number synchronizing between a radio network controller. The invention includes the following steps: S102, a core network source node marks a timestamp for every MBMS business data packet, and sends the business data packet with timestamp to the wireless link control, and the timestamp is a positive integer; S104, the wireless link control receives the business data packet, and slices the business data packet, and maps the corresponding timestamp of the business data packet to the wireless link control sequence number of a first wireless control slicing of the business data packet, distributes the wireless link control sequence number starting from the first wireless link control slicing for the subsequent slicing of the business data packet. The invention can keep a RLC layer sequence number of a MBMS business data packet synchronizing between RNC.
Description
Technical field
The present invention relates to the communications field, relate more specifically to a kind of Radio Link control sequence number method and system synchronous between radio network controller that realize.
Background technology
Now, people no longer are satisfied with phone and messaging service to the demand of mobile communication, and along with the fast development of the Internet, a large amount of multimedia services have emerged in large numbers.Wherein, in some applied business, a plurality of users can receive identical data simultaneously, as video request program, television broadcasting, video conference, online education, interactive game etc.In order to utilize mobile network resource most effectively, multi-medium broadcast/group broadcast service (Multimedia Broadcast/Multicast Service has been proposed, be called for short MBMS) technology, it is a kind of point-to-multipoint service that sends data from a data source to a plurality of users, be used to realize sharing (comprise sharing of mobile core network and access network resource, especially comprise sharing of interface-free resources) of Internet resources.The MBMS of 3GPP definition can not only realize the classes of messages multicast and the broadcasting of plain text low rate, and can realize the multimedia service multicast and the broadcasting of two-forty, and this has complied with the trend of following mobile data development undoubtedly.
As the technology that improves the professional availability of frequency spectrum of MBMS, single frequency network (SingleFrequency Network is called for short SFN) or chip-level merge (Chip merging) technology, require the identical wireless signal of all adjacent base station synchronized transmissions.
Under the SFN pattern, subscriber equipment (User Equipment is called for short UE) can be considered as multipath signal with the signal that comes from different base station.This broadcasting service that makes public physic channel transmit can obtain bigger signal gain, thereby has improved service quality (Quality of Service the is called for short Qos) performance of MBMS business.But the introducing of this technology has also brought new problem: the signal from different base station is considered as multipath by mobile phone, and this just requires the data in each footpath must keep synchronized transmission.Under the Chip merging patterns, UE receives the service signal that different base station sends simultaneously, and realizes merging at chip-level by the multi-plot joint detection technique.The MBMS service signal that this different districts that all requires UE to receive sends all is the same at same time slot.After 3GPP introduces MBMS, variation has taken place in the protocol stack of user's face, radio network controller (Radio Network Controller, be called for short RNC) can be when the MBMS service carrier is set up according to the SA (ServiceArea of core net, the coverage) tabulation is set up shared PDCP (the Packet Data Convergence Protocol in a plurality of sub-districts in the mode of cell set, be called for short PDCP) and Radio Link control (Radio Link Control, be called for short RLC) entity, wherein, MBMS medium access control (Medium Access Control forMBMS is separately used in each sub-district, be called for short MAC-m) and Frame Protocol separately (Frame Protocol is called for short FP).Wherein, RLC uses Unacknowledged Mode (UM pattern).
The MBMS business is the service towards the whole network, and same MBMS business may be based upon on the different RNCs.Like this, the UE receiving gain is improved in order to utilize SFN or Chip folding in the sub-district between different RNCs, needs the MBMS business identical with the sub-district synchronized transmission of the adjacent R NC signal of eating dishes without rice or wine.Otherwise the signal that belongs between the neighbor cell of different RNCs can cause co-channel interference, and perhaps UE can not get receiving gain.
Can the identical signal of eating dishes without rice or wine of synchronized transmission in order to make RLC belong to the sub-district of different RLC, need to guarantee the consistency of business datum and agreement control packet header content, this just requires different RNC when realizing that RLC handles, guarantee that the RLC sequence number is synchronous, to identical business data packet, the identical RLC sequence number of mark.
Realize in the scheme synchronous between the RNC of MBMS business at a kind of core net mark timestamp that uses, consider the possibility of Network Packet Loss, time-delay, if certain RNC does not receive business data packet in the time that requires, and other RNC has received this packet in the time that requires, then according to the processing mode of existing protocol, the RLC sequence number that different RNCs is distributed will occur inconsistent.The RLC sequence number that distributes such as the RNC that packet loss occurs will lag behind the RNC that does not have packet loss.The difference of RLC sequence number can cause professional relevant wireless signal difference of the same moment, thereby makes that wireless signal is asynchronous between RNC.
Therefore the present invention need provide a kind of Radio Link control sequence number method and system synchronous between radio network controller that realize, with under packet drop, the rlc layer sequence number that keeps the MBMS business data packet between RNC synchronously.
Summary of the invention
In view of above one or more problems, the invention provides a kind of Radio Link control sequence number method and system synchronous between radio network controller that realize.
According to realization Radio Link control sequence number method synchronous between radio network controller of the present invention, may further comprise the steps: S102, information source is each business data packet mark timestamp, and the business data packet that will be marked with timestamp is sent to radio network controller, wherein, timestamp is a positive integer; And S104, radio network controller receives business data packet, business data packet is carried out burst, the business data packet time corresponding is stabbed the Radio Link control sequence number be mapped as first Radio Link control burst of business data packet, and distribute the continuous Radio Link control sequence that begins from this sequence number number for the follow-up burst of this business data packet.
Wherein, the sequence number of first Radio Link control burst satisfies: and P1=(%M of T * C), wherein, M is Radio Link control sequence maximum+1, C is timestamp spreading coefficient and C＞0.In the processing procedure of wireless chain control layer, Radio Link control (RLC) protocol Data Unit (PDU) that does not fill up is filled.Information source is core net node or service node.The method according to this invention can be applied to multimedia broadcast-multicast service.
According to realization Radio Link control sequence of the present invention number system synchronous between radio network controller, comprise: the packet marking device, be positioned at core net, be used to each business data packet mark timestamp, the business data packet that is marked with timestamp is sent to radio network controller, wherein, timestamp is a positive integer; And serial number assignment device, be positioned at the radio network controller place, be used for when radio network controller carries out burst to the business data packet that receives, the business data packet time corresponding is stabbed the Radio Link control sequence number be mapped as first Radio Link control burst of business data packet, and distribute the continuous Radio Link control sequence that begins from this sequence number number for the follow-up burst of this business data packet.
Wherein, the sequence number of first Radio Link control burst satisfies: and P1=(%M of T * C), wherein, M is Radio Link control sequence maximum+1, C is timestamp spreading coefficient and C＞0.In the processing procedure of wireless chain control layer, radio network controller is filled the wireless link control protocol data cell that does not fill up.Information source is core net node or service node.Can be applied to multimedia broadcast-multicast service according to system of the present invention.
By the present invention, can be under packet drop, the rlc layer sequence number that keeps the MBMS business data packet between RNC synchronously.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to number synchronous between the radio network controller method of the realization Radio Link control sequence of the embodiment of the invention;
Fig. 2 is the block diagram according to number synchronous between the radio network controller system of the realization Radio Link control sequence of the embodiment of the invention.
Embodiment
Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.
With reference to figure 1, the realization Radio Link control sequence number method synchronous between radio network controller according to the embodiment of the invention is described.As shown in Figure 1, this method may further comprise the steps: S102, and core network source node is each MBMS business data packet mark timestamp, and the business data packet that will be marked with timestamp is sent to radio network controller, wherein, timestamp is a positive integer; And S104, radio network controller receives business data packet, business data packet is carried out Radio Link control burst, the business data packet time corresponding is stabbed the Radio Link control sequence number be mapped as first Radio Link control burst of business data packet, and distribute the continuous Radio Link control sequence that begins from this sequence number number for the follow-up burst of this business data packet.
Wherein, the sequence number of first Radio Link control burst satisfies: and P1=(%M of T * C), wherein, M is Radio Link control sequence maximum+1, C is timestamp spreading coefficient and C＞0.In the processing procedure of wireless chain control layer, the service data unit that does not fill up is filled.
Wherein, core network source can be core net node or service node.The method according to this invention can be applied to multimedia broadcast-multicast service.
In this method according to this invention, the rlc layer sequence number is to be obtained by the mapping of the timestamp of information source mark, so, even certain data-bag lost can not cause the RLC sequence number between RNC inconsistent yet.
With reference to figure 2, the realization Radio Link control sequence number system synchronous between radio network controller according to the embodiment of the invention is described.As shown in Figure 2, this realization Radio Link control sequence number system synchronous between radio network controller comprises: packet marking device 202, be positioned at core net, be used to each business data packet mark timestamp, the business data packet that is marked with timestamp is sent to radio network controller, wherein, timestamp is a positive integer; And serial number assignment device 204, be positioned at the radio network controller place, be used for when radio network controller carries out burst to the business data packet that receives, the business data packet time corresponding is stabbed the Radio Link control sequence number be mapped as first Radio Link control burst of business data packet, and distribute the continuous Radio Link control sequence that begins from this sequence number number for the follow-up burst of this business data packet.
Wherein, the sequence number of first Radio Link control burst satisfies: and P1=(%M of T * C), wherein, M is Radio Link control sequence maximum+1, C is timestamp spreading coefficient and C＞0.In the processing procedure of wireless chain control layer, radio network controller is filled the wireless link control protocol data cell that does not fill up.Information source is core net node or service node.Can be applied to multimedia broadcast-multicast service according to system of the present invention.
By the present invention, can be under packet drop, the rlc layer sequence number that keeps the MBMS business data packet between RNC synchronously.
The above is embodiments of the invention only, is not limited to the present invention, and 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 the claim scope of the present invention.
Claims (10)
1. realize Radio Link control sequence number method synchronous between radio network controller for one kind, it is characterized in that, may further comprise the steps:
S102, information source is each business data packet mark timestamp, and the business data packet that will be marked with timestamp is sent to radio network controller, wherein, described timestamp is a positive integer; And
S104, described radio network controller receives described business data packet, described business data packet is carried out burst, described business data packet time corresponding is stabbed the Radio Link control sequence number that is mapped as first Radio Link control burst of described business data packet, and distribute the continuous Radio Link control sequence that begins from this sequence number number for the follow-up burst of this business data packet.
2. method according to claim 1 is characterized in that, the sequence number of described first Radio Link control burst satisfies: and P1=(%M of T * C), wherein, M is Radio Link control sequence maximum+1, C is timestamp spreading coefficient and C＞0.
3. method according to claim 2 is characterized in that, in the processing procedure of wireless chain control layer, the wireless link control protocol data cell that does not fill up is filled.
4. method according to claim 3 is characterized in that, described information source is core net node or service node.
5. according to each described method in the claim 1 to 4, it is characterized in that described method is used for multimedia broadcast-multicast service.
6. realize Radio Link control sequence number system synchronous between radio network controller for one kind, it is characterized in that comprising:
The packet marking device is positioned at core net, is used to each business data packet mark timestamp, and the business data packet that is marked with timestamp is sent to radio network controller, and wherein, described timestamp is a positive integer; And
The serial number assignment device, be positioned at described radio network controller place, be used for when described radio network controller carries out burst to the described business data packet that receives, described business data packet time corresponding is stabbed the Radio Link control sequence number that is mapped as first Radio Link control burst of described business data packet, and distribute the continuous Radio Link control sequence that begins from this sequence number number for the follow-up burst of this business data packet.
7. system according to claim 6 is characterized in that, the sequence number of described first Radio Link control burst satisfies: and P1=(%M of T * C), wherein, M is Radio Link control sequence maximum+1, C is timestamp spreading coefficient and C＞0.
8. system according to claim 7 is characterized in that, in the processing procedure of wireless chain control layer, described radio network controller is filled the wireless link control protocol data cell that does not fill up.
9. system according to claim 8 is characterized in that, described information source is core net node or service node.
10. according to each described system in the claim 6 to 9, it is characterized in that described system is used for multimedia broadcast-multicast service.
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| CN200710086952XA CN101039175B (en) | 2007-03-27 | 2007-03-27 | Method and system for synchronizing RLC in wireless network controllers |
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| CN200710086952XA CN101039175B (en) | 2007-03-27 | 2007-03-27 | Method and system for synchronizing RLC in wireless network controllers |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062436A1 (en) * | 2007-10-31 | 2009-05-22 | Huawei Technologies Co., Ltd. | A synchronization adjusting method for multimedia broadcast multicast service and an enhanced base station |
| WO2009121204A1 (en) * | 2008-03-31 | 2009-10-08 | 上海贝尔阿尔卡特股份有限公司 | Method for synchronizing a gateway and base stations and the corresponding gateway and base station |
| WO2010017713A1 (en) * | 2008-08-13 | 2010-02-18 | 中兴通讯股份有限公司 | Synchronization realizing method and system for control sequence number |
| WO2010054541A1 (en) * | 2008-11-12 | 2010-05-20 | 中兴通讯股份有限公司 | Method and device of synchronization scheduling |
| WO2010054547A1 (en) * | 2008-11-13 | 2010-05-20 | 中兴通讯股份有限公司 | Synchronization scheduling method |
| CN101547404B (en) * | 2008-03-24 | 2010-10-27 | 大唐移动通信设备有限公司 | Method, system and equipment for realizing synchronization between radio network controllers |
| CN101500341B (en) * | 2008-02-02 | 2011-02-02 | 上海贝尔阿尔卡特股份有限公司 | Gateway and base station for content synchronization based on window and method thereof |
| CN102035794A (en) * | 2009-09-29 | 2011-04-27 | 中兴通讯股份有限公司 | Method and system for transmitting and receiving synchronizing sequence of multimedia broadcast multicast service |
| CN101583081B (en) * | 2008-05-15 | 2012-01-25 | 电信科学技术研究院 | Method, system and device for establishing synchronous bearing |
| CN101562602B (en) * | 2008-04-18 | 2012-09-05 | 中兴通讯股份有限公司 | Method for indicating data format type in MBMS service data synchronization system |
| CN101465745B (en) * | 2007-12-19 | 2012-10-03 | 华为技术有限公司 | Method, device and system for sending multicast and multicast business data |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SE0103506D0 (en) * | 2001-10-19 | 2001-10-19 | Ericsson Telefon Ab L M | HARQ stall avoidance |
| CN100344117C (en) * | 2004-06-28 | 2007-10-17 | 华为技术有限公司 | Method for delay detecting based on RFN time stamp |
| CN100391201C (en) * | 2005-02-28 | 2008-05-28 | 华为技术有限公司 | Method for holding packet data protocol convergence sublayer sequence number synchronization |
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- 2007-03-27 CN CN200710086952XA patent/CN101039175B/en not_active Expired - Fee Related
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| WO2009062436A1 (en) * | 2007-10-31 | 2009-05-22 | Huawei Technologies Co., Ltd. | A synchronization adjusting method for multimedia broadcast multicast service and an enhanced base station |
| CN101465745B (en) * | 2007-12-19 | 2012-10-03 | 华为技术有限公司 | Method, device and system for sending multicast and multicast business data |
| CN101500341B (en) * | 2008-02-02 | 2011-02-02 | 上海贝尔阿尔卡特股份有限公司 | Gateway and base station for content synchronization based on window and method thereof |
| CN101547404B (en) * | 2008-03-24 | 2010-10-27 | 大唐移动通信设备有限公司 | Method, system and equipment for realizing synchronization between radio network controllers |
| WO2009121204A1 (en) * | 2008-03-31 | 2009-10-08 | 上海贝尔阿尔卡特股份有限公司 | Method for synchronizing a gateway and base stations and the corresponding gateway and base station |
| US8493915B2 (en) | 2008-03-31 | 2013-07-23 | Alcatel Lucent | Method for synchronizing between a gateway and base stations and corresponding gateway and base stations |
| CN101981874B (en) * | 2008-03-31 | 2015-10-21 | 上海贝尔股份有限公司 | Synchronous method and corresponding base station is carried out between gateway and base station |
| CN101562602B (en) * | 2008-04-18 | 2012-09-05 | 中兴通讯股份有限公司 | Method for indicating data format type in MBMS service data synchronization system |
| CN101583081B (en) * | 2008-05-15 | 2012-01-25 | 电信科学技术研究院 | Method, system and device for establishing synchronous bearing |
| US8873537B2 (en) | 2008-08-13 | 2014-10-28 | Zte Corporation | Synchronization method and system of control sequence numbers |
| WO2010017713A1 (en) * | 2008-08-13 | 2010-02-18 | 中兴通讯股份有限公司 | Synchronization realizing method and system for control sequence number |
| US8654757B2 (en) | 2008-11-12 | 2014-02-18 | Zte Corporation | Method and apparatus of synchronization scheduling |
| RU2508613C2 (en) * | 2008-11-12 | 2014-02-27 | Зет-Ти-И Корпорейшн | Synchronisation scheduling method and apparatus |
| WO2010054541A1 (en) * | 2008-11-12 | 2010-05-20 | 中兴通讯股份有限公司 | Method and device of synchronization scheduling |
| WO2010054547A1 (en) * | 2008-11-13 | 2010-05-20 | 中兴通讯股份有限公司 | Synchronization scheduling method |
| EP2357770A4 (en) * | 2008-11-13 | 2013-12-04 | Zte Corp | Synchronization scheduling method |
| RU2460230C1 (en) * | 2008-11-13 | 2012-08-27 | ЗетТиИ Корпорейшн | Method of synchronous planning |
| EP2357770A1 (en) * | 2008-11-13 | 2011-08-17 | ZTE Corporation | Synchronization scheduling method |
| CN102035794A (en) * | 2009-09-29 | 2011-04-27 | 中兴通讯股份有限公司 | Method and system for transmitting and receiving synchronizing sequence of multimedia broadcast multicast service |
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