CN101247575B - Communication method between base band unit and far-end radio frequency unit - Google Patents
Communication method between base band unit and far-end radio frequency unit Download PDFInfo
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- CN101247575B CN101247575B CN2008100663042A CN200810066304A CN101247575B CN 101247575 B CN101247575 B CN 101247575B CN 2008100663042 A CN2008100663042 A CN 2008100663042A CN 200810066304 A CN200810066304 A CN 200810066304A CN 101247575 B CN101247575 B CN 101247575B
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Abstract
The invention discloses a communication method between a base-band unit (BBU) and a radio remote unit (RRU), comprising the steps of: A1, respectively configuring device identifier for each BBU and each RRU; A2, respectively restoring the device identifiers of the counterparts when the BBU and the RRU process link establishing negotiation; A3, respectively carrying own device identifier in data transmission when the BBU and the RRU communicate and checking identity of the data transmitter by stored device identifiers of the counterparts when receiving the data. The invention differentiates whether or not the connection between the BBU and the RRU is changed by the device identifiers according to the plan, which discovers rapidly that the device is changed when the devices at both end of the link are changed. And starting establishing flow of the link again guarantees correct and effective configuration for the RRU, which increase reliability of the whole system.
Description
Technical field
The RRU (Remote Radio Unit, remote radio unit (RRU)) that the present invention relates to field of wireless communication zooms out frame, in particular, and the means of communication between BBU (Base Band Unit, Base Band Unit) and RRU.
Background technology
BBU with zoom out frame RRU when being connected, communication link adopts udp protocol or serial port communicating protocol to obtain the transmission that other communications protocol are carried out control command and status data, just the related application data is transmitted on related protocol as load carrying.
But when adopting relevant communication protocol, need application layer to guarantee reliability of data transmission.Generally all consider to adopt the transceive data sequence number to carry out the data transmit-receive control of BBU and RRU.But, when two RRU link to each other with two BBU respectively, and all be in normal operating condition, and the related data reiving/transmitting state if at this moment change the connected mode of BBU and RRU, makes BBU link to each other with another RRU when consistent; The BBU that then utilizes the transceive data sequence number to control as transceive data can not find that RRU equipment changes according to sequence number, consults thereby just can not order about the foundation of carrying out link between BBU and the RRU again.
Like this, communicate by letter normally from phenomenon between BBU and the RRU equipment, but because RRU need be configured Data Update according to the BBU that is connected, even this RRU equipment comes from different manufacturers, so corresponding configuration parameters etc. all can be different, therefore can cause the RRU dysfunction.
Therefore, there is defective in prior art, needs to improve.
Summary of the invention
Whether technical problem to be solved by this invention is how to differentiate to be connected between BBU and the RRU to change, thereby improves the reliability of whole base station system.
Technical scheme of the present invention is as follows:
The means of communication between a kind of Base Band Unit and the remote radio unit (RRU), it may further comprise the steps: A1, be respectively each Base Band Unit BBU and each remote radio unit (RRU) RRU is provided with its device identification; When A2, BBU and RRU carry out the link establishment negotiation, store the other side's device identification respectively; When A3, BBU and RRU carry out communication, in sending data, carry the device identification of self respectively, and when receiving data, adopt the other side's device identification of being stored, carry out the proof of identity of data receiver.
The described means of communication, wherein, steps A 2 concrete following steps: A21, the originating end configuration peer ends of the connection carried out are initiated the link setup request to the opposite end, wherein carry the equipment of itself sign; Described originating end device identification is stored in A22, described opposite end, and with himself device identification, sends to described originating end by the link setup response message; A23, described originating end receive described response message, store described opposite equip. sign; Wherein, described originating end and described opposite end are respectively BBU and RRU, or RRU and BBU.
The described means of communication, wherein, steps A 21 is also carried out following steps: described originating end is regularly initiated request for building link to described opposite end after configuration connects described opposite end, wherein carries the equipment of itself sign.
The described means of communication, wherein, steps A 3 concrete following steps: A31, the BBU of carrying out wherein comprise the device identification of equipment of itself sign and RRU to RRU transmitting control commands message; A32, RRU receive described control command message, according to BBU device identification wherein, judge whether to conform to the BBU device identification of its storage, are then to handle, and send response message; Otherwise, abandon described control command message; When A33, RRU send data to BBU, carry equipment of itself sign and BBU device identification; When A34, BBU receive the data of RRU,, judge whether RRU consults the RRU of link setup originally, is then to handle, and send response message according to RRU device identification wherein; Otherwise, abandon data.
The described means of communication, wherein, steps A 31 concrete following steps: A311, the BBU of carrying out again to RRU transmitting control commands message, wherein comprise the device identification of equipment of itself sign and RRU after receiving the link setup response message; The every transmission one bag data of A312, BBU then start the response message that timer is waited for opposite end RRU.
The described means of communication wherein, are also carried out following steps: A321, described BBU after the steps A 32 and are judged whether all not receive described RRU response message after transmission pre-sets number of times control command message, are then to carry out A323, otherwise carry out A322; A322, described BBU regularly judge whether to receive described RRU response message, otherwise continue to retransmit the control command message that is not responded; A323, described BBU determine that link is unusual, and the current connection of breaking is restarted link setup and consulted, and carries out A2.
The described means of communication, wherein, steps A 33 concrete following steps: A331, the RRU of carrying out fill equipment of itself sign and BBU device identification in message header when BBU sends data; The every transmission one bag data of A332, RRU then start the response message that timer is waited for opposite end BBU.
The described means of communication wherein, are also carried out following steps: A341, described RRU after the steps A 34 and are judged whether all not receive described BBU response message after transmission pre-sets number of times control command message, are then to carry out A343, otherwise carry out A342; A342, described RRU regularly judge whether to receive described BBU response message, otherwise continue to retransmit the control command message that is not responded; A343, described RRU determine that link is unusual, and the current connection of breaking is restarted link setup and consulted, and carries out A2.
The described means of communication wherein, in the steps A 3, when BBU and RRU carry out communication, are carried the device identification of self respectively, and this device identification are left in the head of application layer data in sending data.
The described means of communication, wherein, described device identification comprises according to the CPU sequence number and produces or produce according to the network interface MAC Address of RRU, or adopts the method that generates the unique identification value to produce.
Adopt such scheme, the present invention is by adopting device identification, distinguish to be connected between BBU and the RRU and whether change, thereby when the equipment of both link ends changes, the change of the quick discovering device of meeting, and restart the flow process of setting up of link, guaranteed that therefore configuration to RRU is correct and effectively, has increased the reliability of whole system.
Description of drawings
Fig. 1 is a BBU link establishment flow chart of the present invention;
Fig. 2 is a RRU link establishment flow chart of the present invention;
Fig. 3 is the message format schematic diagram that BBU of the present invention initiates request for building link;
Fig. 4 carries out the message format schematic diagram of link establishment response for RRU of the present invention;
Fig. 5 is that data of the present invention send the message format schematic diagram;
The flow chart that Fig. 6 detects according to device identification for the inventive method.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Purport of the present invention is to distinguish with certain RRU by the device identification of the transmission data carry in the link to link to each other.Be specially and all extract a characteristic value on BBU and the RRU, this characteristic value can produce according to the CPU sequence number, also can produce according to the network interface MAC Address of RRU, perhaps adopts the additive method that can generate the unique identification value to produce.BBU and RRU utilize this characteristic value respectively as self device identification, and are carrying out data when sending, and this sign are left in the head of application layer data.BBU and RRU are at the link setup negotiation phase of link, and the data receiver can preserve the other side's identify label.Packet of either party every transmission in the back, the data head all carries the identify label of opposite end and the identify label of local terminal, makes the data receiver can utilize this value to carry out the verification of data receiver.Thereby prevented RRU equipment to change, but that link transmission can not find that this situation causes is unusual.Certainly RRU also can utilize the packet that receives to confirm whether the BBU that is connected changes.
Therefore, the invention provides the means of communication between a kind of Base Band Unit and the remote radio unit (RRU), it may further comprise the steps.
A1, be respectively each Base Band Unit BBU and each remote radio unit (RRU) RRU is provided with its device identification; Wherein, described device identification comprises according to the CPU sequence number and produces or produce according to the network interface MAC Address of RRU, or adopts the method that generates the unique identification value to produce, and the present invention does not have additional limits to this, only need can each BBU of unique identification and each RRU get final product.
When A2, BBU and RRU carry out the link establishment negotiation, store the other side's device identification respectively; For example, steps A 2 specifically can be carried out following steps: A21, originating end configuration peer end of the connection, initiates the link setup request to the opposite end, wherein carries the equipment of itself sign; Described originating end device identification is stored in A22, described opposite end, and with himself device identification, sends to described originating end by the link setup response message; A23, described originating end receive described response message, store described opposite equip. sign; Wherein, described originating end is BBU, and described opposite end is RRU; Perhaps described originating end is RRU, and described opposite end is BBU.Be more preferably, steps A 21 is also carried out following steps: described originating end is regularly initiated request for building link to described opposite end after configuration connects described opposite end, wherein carries the equipment of itself sign.
More particularly, steps A 2 specifically can be carried out following steps: A21, BBU configuration and connect RRU, initiates the link setup request to RRU, wherein carries the equipment of itself sign; A22, RRU storage BBU device identification, and, send to BBU by the link setup response message with himself device identification; A23, BBU receive described response message, storage RRU device identification.Be more preferably, steps A 21 is also carried out following steps: BBU after configuration connects RRU, regularly initiates request for building link to RRU, wherein carries the equipment of itself sign.Certainly, the link establishment process also can adopt by RRU initiation or both sides and initiate simultaneously, and is concrete similar with above-mentioned example, do not repeat them here.
As depicted in figs. 1 and 2, concrete BBU and the link establishment flow chart of RRU.At first BBU sends request for building link message to the opposite end, has the device identification of BBU in the message, and starts the overtime timer of the message of waiting for opposite end link setup response.This length of timer can be configured by the user, and purpose is in this overtime duration, if do not receive the link setup response message of RRU, then initiates the link setup request process again.
In the link setup request message that BBU sends, have the device identification of self, this sets up request message format can be as shown in Figure 3, and RRU device identification at this moment is also unknown, so represent with 0.These two signs all can be the L byte length.
If BBU is connected with RRU equipment at this moment, RRU is after receiving the link setup request message of BBU, handle according to Fig. 1 and the described RRU of Fig. 2 processing section, if current RRU Link State is in not-connected status, then the device identification of BBU is preserved, and the link establishment response message that will have the device identification of RRU sends to BBU, and message format can be with reference to response format as shown in Figure 4.If the link of RRU end was exactly to be in connection status originally, then close link, the relevant information of initialization link is then handled setting up request message again.
When A3, BBU and RRU carry out communication, in sending data, carry the device identification of self respectively, and when receiving data, adopt the other side's device identification of being stored, carry out the proof of identity of data receiver.General, in steps A 3, when BBU and RRU carry out communication, can in sending data, carry the device identification of self respectively, and this device identification be left in the head of application layer data.
After BBU and RRU two ends all entered the link establishment state, BBU and RRU just can adopt as shown in Figure 5 message format to carry out data and send.After any end is received message, all adopt the device identification of handling process shown in Figure 6 to detect.After receiving the data of opposite end transmission, if entrained destination device sign is not recipient's device identification in the message, then the data receiver directly loses this message.Otherwise, if entrained destination device sign conforms to recipient's device identification in the message, then receive this message, carry out data processing, and respond the response message of having received data to data receiver.
For example, steps A 3 specifically can be carried out following steps: A31, BBU to RRU transmitting control commands message, wherein comprises the device identification of equipment of itself sign and RRU; A32, RRU receive described control command message, according to BBU device identification wherein, judge whether to conform to the BBU device identification of its storage, are then to handle, and send response message; Otherwise, abandon described control command message; When A33, RRU send data to BBU, carry equipment of itself sign and BBU device identification; When A34, BBU receive the data of RRU,, judge whether RRU consults the RRU of link setup originally, is then to handle, and send response message according to RRU device identification wherein; Otherwise, abandon data.
In the foregoing description, each substep can adopt distinct methods to realize, describes respectively below.
For example, steps A 31 specifically can be carried out following steps: A311, BBU after receiving the link setup response message, again to RRU transmitting control commands message, wherein comprises the device identification of equipment of itself sign and RRU; The every transmission one bag data of A312, BBU then start the response message that timer is waited for opposite end RRU.
And for example, can also carry out following steps: A321, described BBU after the steps A 32 and judge whether all not receive described RRU response message after transmission pre-sets number of times control command message, be then to carry out A323, otherwise carry out A322; A322, described BBU regularly judge whether to receive described RRU response message, otherwise continue to retransmit the control command message that is not responded; A323, described BBU determine that link is unusual, and the current connection of breaking is restarted link setup and consulted, and carries out A2.
And for example, steps A 33 specifically can be carried out following steps: A331, RRU when BBU sends data, fills equipment of itself sign and BBU device identification in message header; The every transmission one bag data of A332, RRU then start the response message that timer is waited for opposite end BBU.
And for example, can also carry out following steps: A341, described RRU after the steps A 34 and judge whether all not receive described BBU response message after transmission pre-sets number of times control command message, be then to carry out A343, otherwise carry out A342; A342, described RRU regularly judge whether to receive described BBU response message, otherwise continue to retransmit the control command message that is not responded;
A343, described RRU determine that link is unusual, and the current connection of breaking is restarted link setup and consulted, and carries out A2.
Below provide a complete example, this method adopts following steps:
1, BBU and RRU adopt related protocol to carry out data transmit-receive, and bearing protocol can be UDP (User Datagram Protocol, User Datagram Protoco (UDP)) or serial communication protocol or other communication protocol;
2, BBU regularly initiates to have the request for building link message of local terminal device identification to RRU equipment after configuration is connected with RRU;
3, RRU preserves the device identification of data receiver after receiving this request for building link message, then with the device identification of RRU self, sends to BBU according to the link setup response message format;
4, BBU just begins to send other control command message to RRU after receiving this response message; But the control command message header is filled with the identify label field of the RRU that receives and the device identification of self; The every transmission one bag data of BBU start timer and wait for the opposite end response;
5, after RRU receives this control command message, take out BBU device identification wherein, compare, judge whether to conform to, as conform to, represent that then Data Receiving is correct, handle, and respond the response message of receiving data with the BBU device identification of initial preservation; Otherwise, think this data exception directly to abandon this message;
If 6 RRU are response not, can cause the BBU wait timeout, BBU can continue to retransmit the data that do not responded; If all not receiving response above certain number of times, think that then link is unusual, the current connection of then breaking is restarted link setup and is consulted;
When 7, the RRU reported data is given BBU, fill device identification and the RRU device identification of BBU in message header, every transmission one bag data start timer and wait for the reception response message of opposite end to this packet;
8, after the data that BBU acquisition RRU reports, according to RRU device identification wherein, whether be the RRU of initial negotiation link setup, in this way, then carry out data processing if distinguishing RRU, and respond the response message of receiving data; Otherwise, directly abandon data;
If 9 BBU are response not, can cause the RRU wait timeout, RRU can continue to retransmit the data that do not responded; If, think that then link is unusual all not receiving response above certain number of times, the current connection of then breaking, RRU restarts link setup to be consulted.
Like this, when adopting the inventive method to change at the equipment of both link ends, the change of discovering device fast, and restart the flow process of setting up of link, thus guaranteed that configuration to RRU is correct and effectively; Increased the reliability of whole system.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (10)
1. the means of communication between Base Band Unit and the remote radio unit (RRU), it may further comprise the steps:
A1, be respectively each Base Band Unit BBU and each remote radio unit (RRU) RRU is provided with its device identification;
When A2, BBU and RRU carry out the link establishment negotiation, store the other side's device identification respectively;
When A3, BBU and RRU carry out communication, in sending data, carry the device identification of self respectively, and when receiving data, adopt the other side's device identification of being stored, carry out the proof of identity of data receiver.
2. the means of communication according to claim 1 is characterized in that, the steps A 2 concrete following steps of carrying out:
A21, originating end configuration peer end of the connection are initiated the link setup request to the opposite end, wherein carry the equipment of itself sign;
Described originating end device identification is stored in A22, described opposite end, and with himself device identification, sends to described originating end by the link setup response message;
A23, described originating end receive described response message, store described opposite equip. sign;
Wherein, described originating end and described opposite end are respectively BBU and RRU, or RRU and BBU.
3. the means of communication according to claim 2 is characterized in that, steps A 21 is also carried out following steps: described originating end is regularly initiated request for building link to described opposite end after configuration connects described opposite end, wherein carries the equipment of itself sign.
4. the means of communication according to claim 1 is characterized in that, the steps A 3 concrete following steps of carrying out:
A31, BBU wherein comprise the device identification of equipment of itself sign and RRU to RRU transmitting control commands message;
A32, RRU receive described control command message, according to BBU device identification wherein, judge whether to conform to the BBU device identification of its storage, are then to handle, and send response message; Otherwise, abandon described control command message;
When A33, RRU send data to BBU, carry equipment of itself sign and BBU device identification;
When A34, BBU receive the data of RRU,, judge whether RRU is the RRU that consults link setup originally, is then to handle, and send response message according to RRU device identification wherein; Otherwise, abandon data.
5. the means of communication according to claim 4 is characterized in that, the steps A 31 concrete following steps of carrying out:
A311, BBU again to RRU transmitting control commands message, wherein comprise the device identification of equipment of itself sign and RRU after receiving the link setup response message;
Every transmission one message of A312, BBU then starts the response message that timer is waited for opposite end RRU.
6. the means of communication according to claim 4 is characterized in that, also carry out following steps after the steps A 32:
A321, described BBU judge whether all not receive described RRU response message after transmission pre-sets number of times control command message, are then to carry out A323, otherwise carry out A322;
A322, described BBU regularly judge whether to receive described RRU response message, otherwise continue to retransmit the control command message that is not responded;
A323, described BBU determine that link is unusual, and the current connection of breaking is restarted link setup and consulted, and carries out A2.
7. the means of communication according to claim 4 is characterized in that, the steps A 33 concrete following steps of carrying out:
When A331, RRU send data to BBU, in message header, fill equipment of itself sign and BBU device identification;
Every transmission one packet of A332, RRU then starts the response message that timer is waited for opposite end BBU.
8. the means of communication according to claim 4 is characterized in that, also carry out following steps after the steps A 34:
A341, described RRU judge whether all not receive described BBU response message after transmission pre-sets number of times control command message, are then to carry out A343, otherwise carry out A342;
A342, described RRU regularly judge whether to receive described BBU response message, otherwise continue to retransmit the control command message that is not responded;
A343, described RRU determine that link is unusual, and the current connection of breaking is restarted link setup and consulted, and carries out A2.
9. the means of communication according to claim 1 is characterized in that, in the steps A 3, when BBU and RRU carry out communication, carry the device identification of self respectively in sending data, and this device identification are left in the head of application layer data.
10. the means of communication according to claim 1 is characterized in that, described device identification comprises according to the CPU sequence number and produces or produce according to the network interface MAC Address of RRU, or adopts the method that generates the unique identification value to produce.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100663042A CN101247575B (en) | 2008-03-18 | 2008-03-18 | Communication method between base band unit and far-end radio frequency unit |
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| CN2008100663042A CN101247575B (en) | 2008-03-18 | 2008-03-18 | Communication method between base band unit and far-end radio frequency unit |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101896009B (en) * | 2009-05-18 | 2013-03-27 | 中兴通讯股份有限公司 | System and method for self-discovering remote radio unit and self-establishing topological structure |
| CN102056184B (en) * | 2009-10-30 | 2014-04-23 | 中兴通讯股份有限公司 | Radio remote unit link self-adaption method and device |
| CN101951624A (en) * | 2010-09-25 | 2011-01-19 | 中兴通讯股份有限公司 | Remote radio unit and abnormality detection method thereof |
| CN102655653B (en) * | 2011-03-02 | 2015-10-21 | 鼎桥通信技术有限公司 | TD-SCDMA base band link loop detection method and base station |
| WO2012159299A1 (en) * | 2011-06-27 | 2012-11-29 | 华为技术有限公司 | Method, system and radio frequency controller for controlling radio frequency bypass switch |
| CN103167540A (en) * | 2011-12-14 | 2013-06-19 | 中兴通讯股份有限公司 | Automatic detecting method and automatic detecting system of networking physical connection status |
| CN104955087B (en) | 2014-03-25 | 2019-03-01 | 华为技术有限公司 | A kind of control system and method, relevant device of wireless base station |
| CN108418820B (en) * | 2018-02-28 | 2021-07-30 | 重庆零壹空间航天科技有限公司 | Method and device for receiving serial data |
| CN110224459A (en) * | 2019-06-06 | 2019-09-10 | 深圳市思远半导体有限公司 | Charging bluetooth earphone communication means, relevant device and system |
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| CN1281322A (en) * | 1999-07-19 | 2001-01-24 | 现代电子产业株式会社 | Receiver transmitter set base station of digital mobile remote communication system |
| CN1805566A (en) * | 2005-01-12 | 2006-07-19 | 华为技术有限公司 | Separated base station system and its networking method and baseband unit |
| CN101026819A (en) * | 2007-03-28 | 2007-08-29 | 中兴通讯股份有限公司 | Far end radio frequency unit initiated configuration method based on DHCP protocol |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281322A (en) * | 1999-07-19 | 2001-01-24 | 现代电子产业株式会社 | Receiver transmitter set base station of digital mobile remote communication system |
| CN1805566A (en) * | 2005-01-12 | 2006-07-19 | 华为技术有限公司 | Separated base station system and its networking method and baseband unit |
| CN101026819A (en) * | 2007-03-28 | 2007-08-29 | 中兴通讯股份有限公司 | Far end radio frequency unit initiated configuration method based on DHCP protocol |
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Effective date of registration: 20170915 Address after: 236300 Anhui city of Fuyang province Funan County Yangqiao village Fang Ying Xiang Da Zhuang No. 518 Patentee after: Liu Hongying Address before: 518057 Nanshan District Guangdong high tech Industrial Park, South Road, science and technology, ZTE building, Ministry of Justice Patentee before: ZTE Corporation |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Hongying Inventor before: Li Shunbin |
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| CP02 | Change in the address of a patent holder |
Address after: 541006 the Guangxi Zhuang Autonomous Region Qifeng Yanshan District of Guilin City Park Patentee after: Liu Hongying Address before: 236300 Anhui city of Fuyang province Funan County Yangqiao village Fang Ying Xiang Da Zhuang No. 518 Patentee before: Liu Hongying |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 236300 Anhui city of Fuyang province Funan County Yangqiao village Fang Ying Xiang Da Zhuang No. 518 Patentee after: Liu Hongying Address before: 541006 the Guangxi Zhuang Autonomous Region Qifeng Yanshan District of Guilin City Park Patentee before: Liu Hongying |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110713 Termination date: 20180318 |