CN101883007A - Method and device for realizing service protection under ETREE networking of PTN (Packet Transport Network) network - Google Patents
Method and device for realizing service protection under ETREE networking of PTN (Packet Transport Network) network Download PDFInfo
- Publication number
- CN101883007A CN101883007A CN2010102091295A CN201010209129A CN101883007A CN 101883007 A CN101883007 A CN 101883007A CN 2010102091295 A CN2010102091295 A CN 2010102091295A CN 201010209129 A CN201010209129 A CN 201010209129A CN 101883007 A CN101883007 A CN 101883007A
- Authority
- CN
- China
- Prior art keywords
- protection
- relation
- layer
- protection relation
- ground floor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a method for realizing service protection under ETREE networking of a PTN (Packet Transport Network) network, comprising the following steps of: establishing a protection relation from an upper layer to a lower layer on the ETREE networking of at least three layers of PEs (Provider Edges); carrying out periodic safety check downwards from the first layer of protection relation; when signals fail in the protection relation safety check of the upper layer, stopping the safety check of the lower layer and demarcating that the protection relation of the lower layer fails. The invention also provides a corresponding device. In the invention, a multilevel protection relation in linear protection is adopted to make a networking model layering and clear, relieve the load of a node, effectively realize high requirements on protection in the PTN network and realize carrier-grade PTN protection requirements.
Description
Technical field
The present invention relates to communication technical field, specially refer to the method and apparatus of realizing service protection under a kind of data packet transmission radio network (PTN, Packet Transport Network) network ETREE networking.
Background technology
The PTN technology can provide efficiently Packet Service and transmit, and is that a kind of carrier class multiple service supporting that can provide comprises Ethernet service, the comprehensive transmission network technology that traditional TDM and ATM etc. are professional.The PTN technology has kept the functional requirement that transmits net, has also increased new demand for the transmission of satisfying efficient Packet Service simultaneously.The transmission that Packet Service such as Ethernet, VoIP, VPN, IPTV etc. are professional, and the mobile retransmission take data service as the master has brought new demand and challenge for the transmission network.Transmit network packetization, promptly Packet Transport Network becomes a kind of trend gradually.Typical PTN networking as shown in Figure 1.
Network protection is one of core content of PTN technology, realizes that at present the method for protection is mainly protected linear protection and looped network protection.Linear protection provides a kind of protection mechanism end to end, is suitable for the application scenarios of point-to-point, and looped network protection is for providing a kind of protection mechanism end to end under the annular networking.
But under the ETREE network model, utilize linear protection and looped network protection to realize that all there is certain deficiency in the protection of carrier-class ether: ETREE networking as shown in Figure 2, if adopting linear protection realizes, PE1 and PE4, PE5 and PE6 need to set up respectively the linear protection group so, each protection group need to comprise 2 tunnels, need to draw 3 flows respectively to PE4, PE5 and PE6 from PE1; And if the employing looped network protection is realized; logically need so to be divided into 3 rings among Fig. 2; ring PE1-PE2-PE4-PE3, ring PE1-PE2-PE5-PE3, ring PE1-PE2-PE6-PE3; need to set up one group of protection relation on each ring; every group of protection relation need to set up 2 tunnels and OAM is relevant, need to draw 3 flows respectively to PE4, PE5 and PE6 from PE1 equally.
In specific implementation process, if when the 3rd layer equipment increases, adopt linear protection and looped network protection all can networking concern become complicated, and expend bandwidth, increased the weight of the load of PE1.
Summary of the invention
Main purpose of the present invention provides and realizes method quick and the high reliability protection under the PTN ETREE networking model, and the present invention also provides corresponding device.
The present invention proposes to realize under a kind of PTN network ETREE networking the method for service protection, comprising:
The ETREE networking of at least three layers of PE is set up from the upper strata to the protection relation of lower floor;
Carry out successively periodic safety check downwards from the beginning of ground floor protection relation;
When upper strata protection relation safety detects Signal Fail, stop lower floor's safety detection and demarcate lower floor's protection relation losing efficacy.
Further, described ETREE networking at least three layers of PE is set up before the protection relation of upper strata to lower floor and is comprised:
Set up the connection tunnel between each layer PE.
Further, the described protection relation of ETREE networking foundation from the upper strata to lower floor at least three layers of PE comprises:
Set up the ground floor protection relation between ground floor PE and the second layer PE;
Set up the second layer protection relation between second layer PE and the 3rd layer of PE.
Further, describedly carry out successively periodic safety check downwards from ground floor protection relation beginning and comprise:
The TMP that initiates default detecting pattern and sense cycle at primary link from the beginning of ground floor protection relation detects.
Further, described when upper strata protection relation safety detects Signal Fail, stop lower floor's safety detection and demarcate lower floor's protection relation inefficacy comprising:
When ground floor protection relation lost efficacy, the 3rd layer of PE detected according to TMP, and the position that abandons of Protection path flow is set;
When abandoning the position and be 1, the data flow on the Protection path is abandoned, process the data flow that main path is come;
When abandoning the position and be 0, receive the data flow on the Protection path.
The invention allows for the device of realizing service protection under a kind of PTN network ETREE networking, comprising:
Set up module, be used for the ETREE networking of at least three layers of PE is set up from the upper strata to the protection relation of lower floor;
Detection module is used for carrying out successively periodic safety check downwards from the beginning of ground floor protection relation;
Processing module is used for when upper strata protection relation safety detects Signal Fail, stops lower floor's safety detection and demarcate lower floor's protection relation losing efficacy.
Further, described device also comprises:
Link block is used for setting up the connection tunnel between each layer PE.
Further, the described module of setting up comprises:
First sets up module, is used for setting up the ground floor protection relation between ground floor PE and the second layer PE;
Second sets up module, is used for setting up the second layer protection relation between second layer PE and the 3rd layer of PE.
Further, described detection module specifically is used for: the TMP that initiates default detecting pattern and sense cycle at primary link from the beginning of ground floor protection relation detects.
Further, described processing module specifically is used for:
When ground floor protection relation lost efficacy, the 3rd layer of PE detected according to TMP, and the position that abandons of Protection path flow is set;
When abandoning the position and be 1, the data flow on the Protection path is abandoned, process the data flow that main path is come;
When abandoning the position and be 0, receive the data flow on the Protection path.
The present invention adopts in the linear protection multi-stage protection relation, so that network model stratification, sharpening, has alleviated the load of node, has realized efficiently in the PTN network high demand of protection is realized carrier-class PTN protection requirement.
Description of drawings
Fig. 1 is the classical group web frame schematic diagram of PTN;
Fig. 2 is the ETREE classical group web frame schematic diagram of PTN;
Fig. 3 is the flow chart of an embodiment of the method for realization service protection under the PTN network ETREE of the present invention networking;
Fig. 4 is the structural representation of an embodiment of the device of realization service protection under the PTN network ETREE of the present invention networking.
The realization of the object of the invention, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
With reference to Fig. 3, be the flow chart of an embodiment of the method for realization service protection under the PTN network ETREE of the present invention networking.
ETREE classical group web frame schematic diagram with reference to PTN shown in Figure 2 is done concrete statement.Be that example describes with three layers of PE in embodiments of the present invention, can be applied in the ETREE networking more than three layers of PE but the PTN network ETREE networking that the present invention proposes realizes the method for service protection down.
Step S101, set up the tunnel of PE1 to PE2, PE3;
After PE1 finished to the building tunnel of PE2, PE3, flow copied to respectively PE2 and PE3 at the PE1 place, and can guarantee has flow can arrive PE2 and PE3 in the situation of Single Point of Faliure.
Step S102, set up PE2 and divide the tunnel be clipped to PE4, PE5 and PE6;
Step S103, set up PE3 and divide the tunnel be clipped to PE4, PE5 and PE6;
After building tunnel in step S102 and step S103 is finished and PE1 similarly at PE2 and PE3, flow is transmitted to all PE (being PE4, PE5 and PE6) of its lower one deck.
Step S104, set up Service Instance at PE1 and PE4, PE5, PE6;
After Service Instance was set up and finished, the flow at PE1 place can arrive PE4, PE5 and PE6 by PE2 and PE3.
Step S105, set up PE1 to the protection relation of the ground floor between PE2 and the PE3;
Set up PE1 and be called D1 to the protection of the ground floor between PE2 relation, set up PE1 and be called D2 to the protection of the ground floor between PE3 relation, D1 and D2 all can adopt TMP to detect; And detecting pattern and the sense cycle of TMP be set according to corresponding application demand.
Step S106, set up PE2, PE3 to the protection relation of the second layer between PE4, PE5, the PE6;
Set up PE2 and be called A1 to the protection of the second layer between PE4 relation; set up PE3 and be called A2 to the protection of the second layer between PE4 relation; set up PE2 and be called B1 to the protection of the second layer between PE5 relation; set up PE3 and be called B2 to the protection of the second layer between PE5 relation; set up PE2 and be called C1 to the protection of the second layer between PE6 relation, set up PE3 and be called C2 to the protection of the second layer between PE6 relation.Play TMP at primary link and detect, and detecting pattern and the sense cycle of TMP are set according to the situation of practical application.
Set up two-stage protection relation, ground floor protection relation is respectively PE1-PE2 and PE1-PE3, and it is all nodes of PE2 and lower one deck and all nodes of PE3 and lower one deck that second layer protection is closed.The purpose of setting up the second class protection relation makes the PE node (PE4, PE5, PE6) that is positioned at second layer protection relation decide selector to abandon according to the state of protection relation or receives the flow of coming in the protection path.
For the detection means of protection relations at different levels, the PTN network requirement can realize the protection of ether level, namely can realize the protection switching of 50ms in the situation that has Single Point of Faliure, utilizes the TMP testing mechanism of PTN network to realize.
Step S107, judge whether ground floor protection relation fails;
Judge that whether ground floor protection relation fails is whether the TMP detection signal that the ground floor protection concerns lost efficacy, and continues step S108 when the TMP detection signal of ground floor protection relation lost efficacy; When not losing efficacy, the TMP detection signal of ground floor protection relation enters step S109.
Step S108, stop the detection of second layer protection relation;
After stopping to detect, second layer protection relation enters step S110.
Protect relation related with the second layer ground floor protection relation, protecting the relation failure when ground floor is that ground floor protects the TMP of relation to detect Signal Fail, and then the second layer protects relation to stop to detect, and impels the second layer to protect relation to fail.But second layer protection relation does not influence ground floor protection relation, and also promptly when the failure of second layer protection relation, ground floor protection relation continues detection.
Step S109, judge whether second layer protection relation fails;
When the failure of second layer protection relation, enter step S110; When second layer protection relation enters step S111 when not failing.
Step S110, abandon position 0, receive the flow that standby link is come at the standby link of PE4, PE5 and PE6;
Step S111, abandon position 1, abandon the flow that standby link is come at PE4, PE5 and PE6 standby link.
Second layer protection relation is limited by two factors; first factor is the current state of ground floor protection relation; second factor is the current state of second layer protection relation; any one factor failure can cause second layer protection relation failure, second layer protection relation failure trigger selector abandon position 0.
On PE4, PE5 and PE6, detect according to TMP, the position that abandons of Protection path flow is set, if abandon position 1 then the stream that Protection path is come is lost, thereby only process the data flow that main path is come; Mean and have Single Point of Faliure in the networking if abandon position 0, with the flow that receives Protection path and come, thereby realize protection.
If the failure of the protection of first order relation, i.e. the failure of the protection of D1 and D2 relation can directly be directly transferred to next stage with the result, stops next stage protection relation and detects, and causes all failures of second layer protection relation, comprises A1 and A2, B1 and B2, C1 and C2; In the second layer protection relation; it may be because the failure of ground floor protection relation that each group protection relation detects failure; also may be respectively to organize protection to concern that itself detecting Signal Fail causes; for example ground floor protection concerns that D1 and D2 are normal; but the protection of A1 and A2 relation failure; to trigger the protection relation failure position 1 of PE4, simultaneously with the flow of Protection path abandon position 0, namely receive the flow of Protection path.
The embodiment of the invention adopts 1+1 pattern and multi-stage protection relation in the linear protection, so that network model stratification, sharpening, has alleviated the load of node, has realized efficiently in the PTN network high demand of protection is realized carrier-class PTN protection requirement.
Consult the structural representation of Fig. 4 for an embodiment of the device of realization service protection under the PTN network ETREE of the present invention networking.Be that example describes with three layers of PE in embodiments of the present invention, can be applied in the ETREE networking more than three layers of PE but the PTN network ETREE networking that the present invention proposes realizes the method for service protection down.
The device that the embodiment of the invention provides comprises:
Set up module 21, be used for the ETREE networking of at least three layers of PE is set up from the upper strata to the protection relation of lower floor;
Further, described device also comprises:
Further, the described module 21 of setting up comprises:
First sets up module 211, is used for setting up the ground floor protection relation between ground floor PE and the second layer PE;
Second sets up module 212, is used for setting up the second layer protection relation between second layer PE and the 3rd layer of PE.
Further, described detection module 22 specifically is used for: the TMP that initiates default detecting pattern and sense cycle at primary link from the beginning of ground floor protection relation detects.
Further, described processing module 23 specifically is used for:
When ground floor protection relation lost efficacy, the 3rd layer of PE detected according to TMP, and the position that abandons of Protection path flow is set;
When abandoning the position and be 1, the data flow on the Protection path is abandoned, process the data flow that main path is come;
When abandoning the position and be 0, receive the data flow on the Protection path.
The described module 21 of setting up is set up PE1 and is called D1 to the protection relation of the ground floor between the PE2, sets up PE1 and is called D2 to the protection of the ground floor between PE3 relation, and D1 and D2 all can adopt TMP to detect; And detecting pattern and the sense cycle of TMP be set according to corresponding application demand.Set up PE2 and be called A1 to the protection of the second layer between PE4 relation; set up PE3 and be called A2 to the protection of the second layer between PE4 relation; set up PE2 and be called B1 to the protection of the second layer between PE5 relation; set up PE3 and be called B2 to the protection of the second layer between PE5 relation; set up PE2 and be called C1 to the protection of the second layer between PE6 relation, set up PE3 and be called C2 to the protection of the second layer between PE6 relation.Play TMP at primary link and detect, and detecting pattern and the sense cycle of TMP are set according to the situation of practical application.
Set up two-stage protection relation, ground floor protection relation is respectively PE1-PE2 and PE1-PE3, and it is all nodes of PE2 and lower one deck and all nodes of PE3 and lower one deck that second layer protection is closed.The purpose of setting up the second class protection relation makes the PE node (PE4, PE5, PE6) that is positioned at second Cen protection relation decide selector to abandon according to the state of protection relation or receives the flow of coming in the protection path.
For the detection means of protection relations at different levels, the PTN network requirement can realize the protection of ether level, namely can realize the protection switching of 50ms in the situation that has Single Point of Faliure, utilizes the TMP testing mechanism of PTN network to realize.
When the failure of second layer protection relation, described processing module 23 abandons position 0 at the standby link of PE4, PE5 and PE6, and PE4, PE5 and PE6 receive the flow that standby link is come;
When second layer protection relation was not failed, described processing module 23 abandoned position 1 at PE4, PE5 and PE6 standby link, abandons the flow that standby link is come.
The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. PTN network ETREE networking realizes the method for service protection down, it is characterized in that, comprising:
The ETREE networking of at least three layers of PE is set up from the upper strata to the protection relation of lower floor;
Carry out successively periodic safety check downwards from the beginning of ground floor protection relation;
When upper strata protection relation safety detects Signal Fail, stop lower floor's safety detection and demarcate lower floor's protection relation losing efficacy.
2. method according to claim 1 is characterized in that, described ETREE networking at least three layers of PE is set up before the protection relation of upper strata to lower floor and comprised:
Set up the connection tunnel between each layer PE.
3. method according to claim 2 is characterized in that, the protection relation that described ETREE networking at least three layers of PE is set up from the upper strata to lower floor comprises:
Set up the ground floor protection relation between ground floor PE and the second layer PE;
Set up the second layer protection relation between second layer PE and the 3rd layer of PE.
4. according to claim 1 or 3 described methods, it is characterized in that, describedly carry out successively periodic safety check downwards from ground floor protection relation beginning and comprise:
The TMP that initiates default detecting pattern and sense cycle at primary link from the beginning of ground floor protection relation detects.
5. method according to claim 4 is characterized in that, and is described when upper strata protection relation safety detects Signal Fail, stops lower floor's safety detection and demarcate lower floor's protection relation inefficacy comprising:
When ground floor protection relation lost efficacy, the 3rd layer of PE detected according to TMP, and the position that abandons of Protection path flow is set;
When abandoning the position and be 1, the data flow on the Protection path is abandoned, process the data flow that main path is come;
When abandoning the position and be 0, receive the data flow on the Protection path.
6. PTN network ETREE networking realizes the device of service protection down, it is characterized in that, comprising:
Set up module, be used for the ETREE networking of at least three layers of PE is set up from the upper strata to the protection relation of lower floor;
Detection module is used for carrying out successively periodic safety check downwards from the beginning of ground floor protection relation;
Processing module is used for when upper strata protection relation safety detects Signal Fail, stops lower floor's safety detection and demarcate lower floor's protection relation losing efficacy.
7. device according to claim 6 is characterized in that, described device also comprises:
Link block is used for setting up the connection tunnel between each layer PE.
8. device according to claim 7 is characterized in that, the described module of setting up comprises:
First sets up submodule, is used for setting up the ground floor protection relation between ground floor PE and the second layer PE;
Second sets up submodule, is used for setting up the second layer protection relation between second layer PE and the 3rd layer of PE.
9. according to claim 6 or 8 described devices, it is characterized in that described detection module specifically is used for: the TMP that initiates default detecting pattern and sense cycle at primary link from the beginning of ground floor protection relation detects.
10. device according to claim 9 is characterized in that, described processing module specifically is used for:
When ground floor protection relation lost efficacy, the 3rd layer of PE detected according to TMP, and the position that abandons of Protection path flow is set;
When abandoning the position and be 1, the data flow on the Protection path is abandoned, process the data flow that main path is come;
When abandoning the position and be 0, receive the data flow on the Protection path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010209129.5A CN101883007B (en) | 2010-06-24 | 2010-06-24 | Method and device for realizing service protection under ETREE networking of PTN (Packet Transport Network) network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010209129.5A CN101883007B (en) | 2010-06-24 | 2010-06-24 | Method and device for realizing service protection under ETREE networking of PTN (Packet Transport Network) network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101883007A true CN101883007A (en) | 2010-11-10 |
| CN101883007B CN101883007B (en) | 2015-01-28 |
Family
ID=43054908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010209129.5A Active CN101883007B (en) | 2010-06-24 | 2010-06-24 | Method and device for realizing service protection under ETREE networking of PTN (Packet Transport Network) network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101883007B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102469014A (en) * | 2010-11-16 | 2012-05-23 | 中国移动通信集团公司 | Networking method for packet transport network (PTN) access node equipment chain and relevant equipment |
| CN107682192A (en) * | 2017-10-08 | 2018-02-09 | 许昌学院 | A kind of method of county domain power supply station data communication |
| CN108259210A (en) * | 2017-04-27 | 2018-07-06 | 新华三技术有限公司 | Networking topological realization method between PE and multistage PE |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1777135A (en) * | 2004-11-19 | 2006-05-24 | 株式会社山武 | Communication device and fault notifying method |
| US20070297414A1 (en) * | 2006-06-14 | 2007-12-27 | Riverbed Technology, Inc. | Cooperative Operation of Network Transport and Network Quality of Service Modules |
| CN101136848A (en) * | 2006-09-01 | 2008-03-05 | 华为技术有限公司 | Method and system for protecting multicast tree |
| CN101237661A (en) * | 2008-02-28 | 2008-08-06 | 中兴通讯股份有限公司 | Alarm reporting method and device |
-
2010
- 2010-06-24 CN CN201010209129.5A patent/CN101883007B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1777135A (en) * | 2004-11-19 | 2006-05-24 | 株式会社山武 | Communication device and fault notifying method |
| US20070297414A1 (en) * | 2006-06-14 | 2007-12-27 | Riverbed Technology, Inc. | Cooperative Operation of Network Transport and Network Quality of Service Modules |
| CN101136848A (en) * | 2006-09-01 | 2008-03-05 | 华为技术有限公司 | Method and system for protecting multicast tree |
| CN101237661A (en) * | 2008-02-28 | 2008-08-06 | 中兴通讯股份有限公司 | Alarm reporting method and device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102469014A (en) * | 2010-11-16 | 2012-05-23 | 中国移动通信集团公司 | Networking method for packet transport network (PTN) access node equipment chain and relevant equipment |
| CN102469014B (en) * | 2010-11-16 | 2014-09-03 | 中国移动通信集团公司 | Networking method for packet transport network (PTN) access node equipment chain and relevant equipment |
| CN108259210A (en) * | 2017-04-27 | 2018-07-06 | 新华三技术有限公司 | Networking topological realization method between PE and multistage PE |
| CN108259210B (en) * | 2017-04-27 | 2021-07-23 | 新华三技术有限公司 | Method for realizing networking topology between PE and multi-stage PE |
| CN107682192A (en) * | 2017-10-08 | 2018-02-09 | 许昌学院 | A kind of method of county domain power supply station data communication |
| CN107682192B (en) * | 2017-10-08 | 2021-11-16 | 许昌学院 | County power supply station data communication method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101883007B (en) | 2015-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101877665B (en) | Ring network protecting method, network node and ring network | |
| CN102664774B (en) | Method for testing port connectivity of switch | |
| JP5131029B2 (en) | Communication apparatus and path switching method | |
| CN105959217A (en) | Data processing method and apparatus for SDN Mobile Ad-Hoc Network | |
| WO2012079418A1 (en) | Method and system for intersecting or tangent ring network protection | |
| CN206559565U (en) | Terminal communication access network EPON ring-shaped network structures | |
| WO2011095101A1 (en) | Linear 1: n protection method, device and system for packet transport network | |
| CN108337144A (en) | The metropolitan areas TD-LTE return network, path protecting method | |
| CN102223312B (en) | Flow control method and equipment based on link status | |
| CN103036756B (en) | A kind of mixing ring network protection method and system based on sharing channel | |
| CN102572905A (en) | Dual-homing protection switching method and system | |
| US8184527B2 (en) | Method for conducting redundancy checks in a chain network | |
| CN101222402B (en) | Ethernet ring protection method, system and device | |
| US20120300617A1 (en) | Method and Apparatus for Protecting Tunnel | |
| CN101883007A (en) | Method and device for realizing service protection under ETREE networking of PTN (Packet Transport Network) network | |
| EP2312792B1 (en) | Protection protocol device for network node and method for processing protection switching thereof | |
| CN101834759A (en) | Detection method of binding link and distributed equipment | |
| CN105681149A (en) | Loop network protection method and device | |
| CN103178975B (en) | The method and system of suppressed traffic message storm during a kind of looped network protection | |
| CN104618057B (en) | A kind of Packet Transport Network not damaged protection reverse method and system | |
| WO2012022242A1 (en) | Base station system for railway use and networking method thereof | |
| CN102148693B (en) | Shared granularity method, node and shared granularity system | |
| CN101997751B (en) | Realization method and device of protection switching in Ethernet | |
| CN103117924A (en) | Method and device for protection switching | |
| CN105227332B (en) | PW double-returning protection switching method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170511 Address after: 518057 Nanshan District high tech Industrial Park, Guangdong,, ZTE A3-01, A3-02 Patentee after: Shenzhen Zhongxing Communication Technology Service Co., Ltd. Address before: 518057 Nanshan District Guangdong high tech Industrial Park, South Road, science and technology, ZTE building, Ministry of Justice Patentee before: ZTE Corporation |