CN100589407C - A kind of method of using common public radio interface to obtain network appliance address - Google Patents
A kind of method of using common public radio interface to obtain network appliance address Download PDFInfo
- Publication number
- CN100589407C CN100589407C CN200710077241A CN200710077241A CN100589407C CN 100589407 C CN100589407 C CN 100589407C CN 200710077241 A CN200710077241 A CN 200710077241A CN 200710077241 A CN200710077241 A CN 200710077241A CN 100589407 C CN100589407 C CN 100589407C
- Authority
- CN
- China
- Prior art keywords
- rruid
- wireless device
- address
- index
- described wireless
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of method of using common public radio interface to obtain network appliance address, comprise step: definition RRUID_Index and two control words of RRUID_z in the Vendor specific of CPRI superframe control word field; Each port at CPRI is provided with an allocation tables; CPRI sends described RRUID_Index to RE and next stage RE thereof, the configuration information link; Each RE obtains RRUID address separately according to the RRUID_Index that receives separately.Adopt the inventive method, can dynamically update according to the backstage configuration neatly, obtain the address, greatly reduce the complexity and the cost of beginning.
Description
Technical field
The present invention relates to communication technique field, particularly a kind of when using common public radio interface far end radio frequency equipment obtain the method for address.
Background technology
Common public radio interface (Common Public Radio Interface, be called for short CPRI) be the standard of publishing jointly by many companies cooperation in the communications industry, it has carried out standard to the key interface between internal wireless Equipment Control center, wireless base station (REC) and the wireless device (RE).Based on the CPRI standard, can improve the versatility of interface between Base Band Unit and the radio frequency unit, also help realizing between the base band of different vendor and the radio-frequency module interconnected.
REC generally is connected by optical fiber with RE, can carry out star-like, chain or networking such as ring-like.REC will communicate with its RE that is connected, and each RE must have a unique address to distinguish mutually with other RE.Traditional method is according to the network planning, directly is provided with on RE, such as passing through toggle switch.But there are two shortcomings in this method:
1, RE must manually be provided with an address before networking, and must with being consistent of background net management configuration, this is easy to setting to occur forgetting, problems such as mistake or toggle switch inefficacy is set;
If 2 network plannings need to revise, may need a plurality of foregrounds to revise the address configuration of RE, increase the difficulty and the cost of engineering maintenance greatly.
Therefore, prior art awaits to improve and development.
Summary of the invention
The object of the present invention is to provide a kind of by index and time-multiplexed method, adopt the network equipment dynamically allocate address of CPRI interface, the flexible configuration address just can be carried out to network in realization webmaster backstage, can avoid occurring because of forward and backward the inconsistent variety of issue that occurs of configuration address.
For solving above-mentioned purpose, the invention provides a kind of method of using common public radio interface to obtain network appliance address, comprise the steps:
A, in the Vendor specific of common public radio interface superframe control word field, define RRUID_Index and two control words of RRUID_z respectively;
B, on each port at wireless device controls center, safeguard an allocation tables; When the networking mode between described wireless device controls center and the described wireless device was chain networking, did not repeat the RRUID address of each port assignment; When the networking mode between described wireless device controls center and the described wireless device is ring-shaped network, in the described wireless device controls in the heart the allocation tables of two port maintenances be reciprocal;
When the mind-set wireless device sends described RRUID_Index in C, the described wireless device controls, this RRUID_Index field is changed to 0, and each described wireless device after receiving this field takes off its content, and this field is added 1 back continue to transmit to its next stage wireless device, constitute a link; Reach the content transmission of the RRUID_z field in each described common public radio interface superframe successively with described allocation tables, constitute a universal mobile telecommunications system frame, be specially: in described superframe, when Hyper Frame Number HFN=0, described wireless device controls center sends the 1st address date, and during Hyper Frame Number HFN=1, described wireless device controls center sends the 2nd address date ..., and the like, constitute a universal mobile telecommunications system frame;
When RRUID_Index that D, each described wireless device are received and Hyper Frame Number thereof equate, the RRUID_z field of this superframe is taken off, as the RRUID address of this wireless device.
Wherein, in the described method, when the networking mode between described wireless device controls center and the described wireless device is ring-shaped network, also carry out after the described step D:
E, described wireless device be according to forward direction routing situation, an address as this wireless device in the described RRUID address of selecting to solve on its forward link.
Wherein, among the step B, described allocation tables comprises m address, and the size of each address is n bit, and wherein, m is maximum permission cascade number of wireless equipment of this network design, and m and n are positive integer.
Wherein, also comprise following processing among the described step C: when certain port non-locking of described wireless device or the RRUID_Index that receives were invalid value, the RRUID_Index that this wireless device will send on another port also was invalid value.
Wherein, in the described method, described universal mobile telecommunications system frame comprises 150 superframes, and the cycle of this universal mobile telecommunications system frame is 10ms.
Wherein, in the described method, each described superframe comprises 256 basic frames, and the cycle of each basic frame is 260.42ns.
Wherein, described step D also comprises: when the RRUID_Index that each described wireless device is received and its Hyper Frame Number were unequal, described wireless device was disregarded the RRUID_z field, and directly this RRUID_Index was transparent to the described wireless device of next stage.
Compared with prior art, the present invention proposes a kind of method for the automatic address acquisition of the radio-frequency apparatus (RE) that uses the CPRI standard interface, that this method goes for is star-like, chain or ring-shaped network mode, can dynamically update according to the backstage configuration neatly, obtain the address, and do not need manually on RE, to be provided with, like this, similar RE in the network is duplicate before networking, greatly reduces the complexity and the cost of beginning; Simultaneously, to the follow-up upgrading of network with safeguard also can be more flexibly and efficient.
Description of drawings
Fig. 1 be the inventive method the CPRI frame structure with become the frame number schematic diagram, wherein, W:wordnumber in basic frame, the number of words of each basic frame; Y:byte number within word, each word comprises byte number; X:basic frame number; Z:hyperframe number, Hyper Frame Number;
Fig. 2 during for the chain networking of the inventive method REC configuration address table and RE obtain the schematic diagram of address;
Fig. 3 during for the ring-shaped network of the inventive method REC configuration address table and RE obtain the schematic diagram of address;
Fig. 4 during for the ring-shaped network chain rupture of the inventive method REC configuration address table and RE obtain the schematic diagram of address;
Realization flow schematic diagram when Fig. 5 is the ring-shaped network of the inventive method.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in further detail.
The invention provides a kind of method of using common public radio interface to obtain network appliance address, see also Fig. 5, its realization flow comprises the steps:
510, two control words of definition in the Vendor specific of common public radio interface superframe control word field are respectively RRUID_Index and RRUID_z;
520, in the allocation tables of each port maintenance of wireless device controls center (REC), described allocation tables comprises m address, and the size of each address is n bit, wherein, m is maximum permission cascade number of wireless equipment of this network design, and m and n are positive integer;
When 530, the mind-set wireless device sends described RRUID_Index in the described wireless device controls, and this RRUID_Index field is changed to 0, and each described wireless device after receiving this field takes off its content, and this field is added ' 1 ' back continue to transmit to its next stage wireless device, constitute a link; When described wireless device controls center sends signal, with the content transmission of the RRUID_z field in each described common public radio interface superframe successively of described allocation tables; And in described superframe, when Hyper Frame Number HFN=0, described wireless device controls center sends the 1st address date, during Hyper Frame Number HFN=1, described wireless device controls center sends the 2nd address date ..., and the like, constitute a universal mobile telecommunications system frame;
540, the RRUID_Index that receives according to oneself of each described wireless device, the superframe that receives is separately judged, when the Hyper Frame Number HFN that receives equates with the RRUID_Index of described wireless device, then the RRUID_z field of this superframe is taken off, as the RRUID address of this wireless device; Otherwise the RRUID_z field is disregarded, and directly be transparent to next stage.
Wherein, when the networking mode between described wireless device controls center and the described wireless device was ring-shaped network, in the step 520, the allocation tables of supercentral two ports of described wireless device controls was reciprocal; And describedly reciprocally be meant that obtaining address mode in the ring-shaped network is clockwise direction and counterclockwise, on the looped network of supposing to dispose x wireless device arranged, then k address of a port address table should equal another port 2* (x-1)-k address, 1≤k≤x wherein, k and x are positive integer.
Wherein, when the networking mode between described wireless device controls center and the described wireless device was ring-shaped network, described method also comprised
550, described wireless device is according to forward direction routing situation, address as this wireless device in the described RRUID address of selecting to solve on its forward link.
Wherein, in the step 530, on described link, the RRUID_Index that each described wireless device receives is followed successively by 0,1,2 ...; And when certain port non-locking of described wireless device or the RRUID_Index that receives were invalid value FF, the RRUID_Index that this wireless device will send on another port also was invalid value FF, shown in Fig. 2,3 and 4.
Like this, in the said method, every (address configuration of network is just upgraded once for Universal MobileTelecommunications System, UMTS) frame, and the realization system obtains configuration address automatically through a universal mobile telecommunications system.
See also accompanying drawing 1, (Universal Mobile TelecommunicationsSystem UMTS) in the frame, comprises 150 superframes to universal mobile telecommunications system, and its cycle is 10ms; And each described superframe comprises 256 basic frames, and the cycle of each basic frame is 260.42ns; Wherein, each basic frame all has a control field, and its definition is as shown in table 1.
The present invention defines RRUID_Index in Vendor specific field and two control fields of RRUID_z realize, can be according to different design and be different in its position.
On REC, each output port all disposes an allocation tables, comprises m address in each allocation tables, and the size of each address is n bit, and wherein, m is maximum permission cascade number of wireless equipment of this network design.
Because star-like networking can be regarded the special circumstances of chain networking as, therefore, describes respectively with chain networking and ring-shaped network respectively below.
During for chain networking, seeing also accompanying drawing 2, in the present embodiment, 2 ports are arranged on the REC, also can be more than 2.Allocation tables of each port maintenance on the REC, and each port
The control field tabulation of each basic frame of table 1
| Subchannel number | The subchannel purpose | Xs＝0 | Xs＝1 | Xs＝2 | Xs＝3 | |
| 0 | Sync&timing | Sync byte K28.5 | HFN | BFN-low | BFN-high | |
| 1 | Slow C&M | Slow C&M | Slow C&M | Slow C&M | Slow |
|
| 2 | L1 inland prot | Version | Startup | L1-reset- | Pointer p | |
| 3 | Reserved | Reserved | Reserved | Reserved | Reserved | |
| ... | ... | ... | ... | ... | ... | |
| 15 | Reserved | Reserved | Reserved | Reserved | Reserved | |
| 16 | Vendor specific | Vendor specific | Vendor specific | Vendor specific | Vendor specific | |
| ... | ... | ... | ... | ... | ... | |
| p-1 | Vendor specific | Vendor specific | Vendor specific | Vendor specific | Vendor specific | |
| Pointer p | Fast C&M | Fast C&M | Fast C&M | Fast C&M | Fast C&M | |
| ... | ... | ... | ... | ... | ... | |
| 63 | Fast C&M | Fast C&M | Fast C&M | Fast C&M | Fast C&M |
The RRUID index that distributes can not repeat, and the allocation tables of the port one of REC and port 2 is as shown in table 2:
Table 2 chain networking allocation tables
| Sequence number | Port one | |
| 0 | 2 | 7 |
| 1 | 4 | 8 |
| 2 | FF | FF |
As shown in table 2, for port one, REC is when sending RRUID_index, RRUID_index partly is changed to ' 0 ', therefore, the RRUID_index that first order wireless device (RE1) is received is ' 0 ', and RE1 delivers to RE2 after RRUID_index is added ' 1 ', and the RRUID_index that RE2 receives is ' 1 '.When HFN=0, the RRUID_z that REC sends partly fills out ' 2 ', fills out ' 4 ' during HFN=1, HFN=other the time, fill out an invalid value ' complete 1 '; For RE1, the RRUID_index that it obtains oneself is for after ' 0 ', and when it received the superframe of HFN=0, just the RRUID address of the RRUID_z of this superframe as it, therefore, the RRUID address that this RE1 obtains was 2; Equally, the RRUID address that obtains of RE2 is 4; Similar, the RRUID address that RE3 and RE4 obtain is respectively 7 and 8.When certain port non-locking of RE or the RRUID_Index that receives were invalid value FF, the RRUID_Index that this RE will send on its another port also was invalid value FF, as shown in Figure 2, or as shown in table 2.
During for ring-shaped network, see also accompanying drawing 3,1 port of REC will be configured to from port, as the S port, allocation tables of each port maintenance, but the allocation tables of two ports of composition looped network is reciprocal, and promptly obtaining address mode is clockwise direction and counter clockwise direction, configuration light mouth 1 is from port, and port one, 2 is formed looped network.The port one of REC, 2 allocation tables, as shown in table 3:
Table 3 ring-shaped network allocation tables
| Sequence number | Port one (S) | Port 2 (M) |
| 0 | 2 | 3 |
| 1 | 4 | 4 |
| 2 | 3 | 2 |
| 3 | FF | FF |
See also shown in the accompanying drawing 3, see clockwise direction earlier, for port one, REC partly is changed to ' 0 ' with RRUID_index when sending RRUID_index, the RRUID_index that RE1 receives is ' 0 ', RE1 delivers to RE2 after RRUID_index is added ' 1 ', the RRUID_index that RE2 receives is ' 1 ', and RE2 delivers to RE3 after RRUID_index is added ' 1 ', and the RRUID_index that RE3 receives is ' 2 '.When HFN=0, the RRUID_z that REC sends partly fills out ' 2 ', fills out ' 4 ' during HFN=1, fills out ' 3 ' during HFN=2, HFN=other the time, fill out an invalid value ' complete 1 '; For RE1, after the RRUID_index that it obtains was ' 0 ', when it received the superframe of HFN=0, just the RRUID address of the RRUID_z of this superframe as it, therefore, the RRUID address that it obtains was 2; Equally, the RRUID address that RE2 obtains is 4, and the RRUID address that RE3 obtains is 3.
See also shown in the accompanying drawing 3, see again counterclockwise, for port 2, REC partly fills out ' 0 ' with RRUID_index when sending, therefore the RRUID_index that receives of RE3 is ' 0 ', and RE3 delivers to RE2 after RRUID_index is added ' 1 ', so the RRUID_index that RE2 receives is ' 1 ', RE2 delivers to RE1 after RRUID_index is added ' 1 ', so the RRUID_index that RE1 receives is ' 2 '.When HFN=0, the RRUID_z that REC sends partly fills out ' 3 ', fills out ' 4 ' during HFN=1, fills out ' 2 ' during HFN=2, HFN=other the time, fill out an invalid value ' complete 1 '; For RE3, after the RRUID_index that it obtains was ' 0 ', when it received the superframe of HFN=0, just the RRUID address of the RRUID_z of this superframe as RE3, so the RRUID address that it obtains was 3; Equally, the RRUID address that RE2 obtains is 4, and the RRUID address that RE1 obtains is 2.
Since in the ring-shaped network among the REC allocation tables of two port maintenances be reciprocal, promptly obtaining address mode is clockwise direction and counter clockwise direction, therefore, RE at different levels can be according to the routing situation of forward direction separately, select on its forward link, such as a address in the described RRUID address that solves on clockwise direction or the counter clockwise direction as this RE.Like this, the RRUID address that obtains on both direction of RE1, RE2 and RE3 is in full accord.
If ring-shaped network is during because of fortuitous event generation chain rupture, as shown in Figure 4, the local chain rupture of drawing " * " in the link, for RE1, the RRUID_index that it is received in the clockwise direction is ' 0 ', and therefore, RE1 is when receiving the superframe of HFN=0, just the RRUID address of the RRUID_z of this superframe as it, the RRUID address that RE1 obtains is 2; Similar, for RE2 and RE3, the RRUID address that they obtain in the counterclockwise direction is respectively 4 and 3.
Like this, the RRUID address that RE1, RE2 and RE3 obtain is respectively 2,4 and 3, is consistent with the configuration of RRUID allocation index before the chain rupture.
In sum, the present invention proposes a kind of method for the automatic address acquisition of the radio-frequency apparatus (RE) that uses the CPRI standard interface, that this method goes for is star-like, chain or ring-shaped network mode, can dynamically update according to the backstage configuration neatly, obtain the address, and do not need manually on RE, to be provided with, like this, similar RE in the network is duplicate before networking, greatly reduces the complexity and the cost of beginning; Simultaneously, to the follow-up upgrading of network with safeguard also can be more flexibly and efficient.
In a word, the present invention is not limited to above-mentioned execution mode, anyly is familiar with this operator, without departing from the spirit and scope of the present invention, all should drop within protection scope of the present invention.
Claims (6)
1, a kind of method of using common public radio interface to obtain network appliance address, this method comprises the steps:
A, in the Vendor specific of common public radio interface superframe control word field, define RRUID_Index and two control words of RRUID_z respectively;
B, on each port at wireless device controls center, safeguard an allocation tables; When the networking mode between described wireless device controls center and the described wireless device was chain networking, did not repeat the RRUID address of each port assignment; When the networking mode between described wireless device controls center and the described wireless device is ring-shaped network, in the described wireless device controls in the heart the allocation tables of two port maintenances be reciprocal;
When the mind-set wireless device sends described RRUID_Index in C, the described wireless device controls, this RRUID_Index field is changed to 0, and each described wireless device after receiving this field takes off its content, and this field is added 1 back continue to transmit the configuration information link to its next stage wireless device; The content that reaches described allocation tables sends in the RRUID_z field in each described common public radio interface superframe successively, constitute a universal mobile telecommunications system frame, be specially: in described superframe, when Hyper Frame Number HFN=0, described wireless device controls center sends the 1st address date, and during Hyper Frame Number HFN=1, described wireless device controls center sends the 2nd address date ..., and the like, constitute a universal mobile telecommunications system frame;
D, when the received RRUID_Index of each described wireless device equates with its Hyper Frame Number, the RRUID_z field of this superframe is taken off, as the RRUID address of this wireless device;
When the networking mode between described wireless device controls center and the described wireless device is ring-shaped network, also carry out after the described step D:
E, described wireless device be according to forward direction routing situation, an address as this wireless device in the described RRUID address of selecting to solve on its forward link.
2, method according to claim 1 is characterized in that, among the step B, described allocation tables comprises m address, and the size of each address is n bit, and wherein, m is maximum permission cascade number of wireless equipment of this network design, and m and n are positive integer.
3, method according to claim 1, it is characterized in that, also comprise following processing among the described step C: when certain port non-locking of described wireless device or the RRUID_Index that receives were invalid value, the RRUID_Index that this wireless device will send on another port also was invalid value.
4, method according to claim 1 is characterized in that, among the described step C, described universal mobile telecommunications system frame comprises 150 superframes, and the cycle of this universal mobile telecommunications system frame is 10ms.
5, method according to claim 4 is characterized in that, each described superframe comprises 256 basic frames, and the cycle of each basic frame is 260.42ns.
6, method according to claim 1, it is characterized in that, described step D also comprises: when the RRUID_Index that each described wireless device is received and its Hyper Frame Number are unequal, described wireless device is disregarded the RRUID_z field, and directly this RRUID_Index is transparent to the described wireless device of next stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710077241A CN100589407C (en) | 2007-09-18 | 2007-09-18 | A kind of method of using common public radio interface to obtain network appliance address |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710077241A CN100589407C (en) | 2007-09-18 | 2007-09-18 | A kind of method of using common public radio interface to obtain network appliance address |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101174981A CN101174981A (en) | 2008-05-07 |
| CN100589407C true CN100589407C (en) | 2010-02-10 |
Family
ID=39423255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710077241A Expired - Fee Related CN100589407C (en) | 2007-09-18 | 2007-09-18 | A kind of method of using common public radio interface to obtain network appliance address |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100589407C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9204312B2 (en) | 2013-11-27 | 2015-12-01 | Freescale Semiconductor, Inc. | Method for adding leaf node to multi-node base station |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394197B (en) * | 2008-09-28 | 2012-07-18 | 中兴通讯股份有限公司 | Baseband data transmission method and device for CDMA distributed base station system |
| CN101730088B (en) * | 2008-10-15 | 2012-08-08 | 京信通信系统（中国）有限公司 | Method for automatically acquiring radio remote unit connection relation |
| CN101841364A (en) | 2009-03-20 | 2010-09-22 | 华为技术有限公司 | Data transmission method and related equipment |
| CN102118795B (en) | 2009-12-31 | 2013-10-09 | 华为技术有限公司 | Base station and method for transmitting common public radio interface data in base station |
| CN103580780B (en) | 2012-07-23 | 2018-03-09 | 中兴通讯股份有限公司 | Data transmission method and device |
| CN103209185B (en) * | 2013-04-07 | 2016-06-29 | 大唐移动通信设备有限公司 | A kind of transmitting message at optical interface and device |
-
2007
- 2007-09-18 CN CN200710077241A patent/CN100589407C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9204312B2 (en) | 2013-11-27 | 2015-12-01 | Freescale Semiconductor, Inc. | Method for adding leaf node to multi-node base station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101174981A (en) | 2008-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100589407C (en) | A kind of method of using common public radio interface to obtain network appliance address | |
| CN102547778B (en) | Wireless communication system of flat network architecture, method and expansion unit | |
| CN101160925B (en) | Method and device for transmitting multi-system wireless service data | |
| CN102547716B (en) | Wireless communication system and method for flat network architecture and extend unit | |
| CN101425838A (en) | Data channel configuration method and device | |
| CN101527932A (en) | Method for performing buffer status reporting and communication apparatus thereof | |
| CN107612577A (en) | A kind of channel selecting system, method and electronic equipment | |
| CN100508663C (en) | Method and device for realizing the preferential access to REC at the RE beginning end | |
| CN101394197B (en) | Baseband data transmission method and device for CDMA distributed base station system | |
| CN101175291B (en) | Distribution method and device executing AxC to RRU connected with BBU | |
| EP1814341B1 (en) | Methods and devices for transmitting and receiving frame timings and frame numbers via common radio interface | |
| CN201699992U (en) | System sharing base station bandwidth by wireless access point | |
| CN104427512A (en) | Networking method and device for distributed base station | |
| CN104348510A (en) | Control information transceiving device and method | |
| CN101237450A (en) | Method and apparatus for handling packets in a wireless communications system | |
| CN100589623C (en) | Method for configuring initial information of multi-stage far-end radio frequency unit via control word | |
| CN202587393U (en) | Device for realizing multi-frequency broadband high-speed digital distributed antenna system (DAS) | |
| CN100479399C (en) | Addressing system for cascade networking and its method | |
| CN109586886B (en) | Data transmission system | |
| CN101702839B (en) | Device and method for implementing inverting function of main link and standby link of Ir interface | |
| CN101365185A (en) | Base station, method and mobile communication system implementing return data transmission | |
| CN103152777A (en) | Communicator and frequency band switching method | |
| CN101370017A (en) | Method and device for setting headers in a wireless communications system | |
| CN102244936A (en) | Method and system for sharing base station bandwidth by wireless access point (AP) | |
| CN101778493A (en) | Terminal equipment supporting various network access modes, system and realization method |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100210 Termination date: 20150918 |
|
| EXPY | Termination of patent right or utility model |