CN101072419A - Method for configuring initial information of multi-stage far-end radio frequency unit via control word - Google Patents
Method for configuring initial information of multi-stage far-end radio frequency unit via control word Download PDFInfo
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- CN101072419A CN101072419A CNA200710073835XA CN200710073835A CN101072419A CN 101072419 A CN101072419 A CN 101072419A CN A200710073835X A CNA200710073835X A CN A200710073835XA CN 200710073835 A CN200710073835 A CN 200710073835A CN 101072419 A CN101072419 A CN 101072419A
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Abstract
The invention includes steps: (1) setting up control word Index in control words between BBU and RRU, and initializing value m as 0; (2) setting n pieces of information data group as D0, D1, D2, ... Dn-1 respectively in control words between BBU and RRU; (3) BBU sends Index information and the said array of information data to RRU m; (4) based on value m in Index, RRU m down loads data in Dm, and assigning it to this RRU; (5) RRU adds 1 to value of Index, and sends Index and initialized information data group to RRU in next stage; (6) repeating step (4) and (5) till m=n-1. The invention can configure each piece of initialization information of RRU to all RRU at one time. Thus, RRU can obtain needed initialized configuration information rapidly, and build up communication connection with BBU.
Description
Technical field
The present invention relates to the BBU (Base Band Unit, Base Band Unit) and RRU (Remote Radio Unit, remote radio unit (RRU)) of wireless communication system, especially the method for the initial information of Base Band Unit configuration multi-stage far-end radio frequency unit.
Background technology
In recent years, the framework development of wireless communication system is evolved into such trend gradually: BBU is separated with RRU, and by long-distance transmissions means (as optical fiber, cable) BBU and a plurality of RRU are coupled together, then radio frequency unit is placed on the place of various needs.This framework has improved the flexibility of networking on the one hand, has reduced the maintenance cost of network on the other hand.Therefore, this framework more and more obtains user's approval, and the application scenario is also more and more.In recent years, this framework had write some industry standard, as OBSAI, CPRI standard, and became an one important part.
When using this framework networking, a plurality of RRU are connected to each other according to certain topological structure (as Star network, Chain Network), and finish the communication of BBU and a plurality of RRU on this basis, realization BBU is to control and the management of RRU.BBU and the star-like connection that can adopt point-to-point being connected of RRU, as shown in Figure 1; Also can adopt chain to connect, as shown in Figure 2.
In existing technology, generally be definition IQ data channel and control word passage between BBU and RRU, the former is that the IQ data channel is used to transmit the IQ data between BBU and the RRU, and the latter is that the control word passage realizes that then BBU transmits and relevant control and management with clock synchronization, frame synchronization, signaling between the RRU.
Generally, can pass through control word (Control Word) channel arrangement initial information between BBU and the RRU.Method commonly used is in networking the id number of the RRU mode by control word to be delivered to RRU by BBU, or the id number of RRU directly is set by toggle switch on RRU, makes RRU obtain oneself ID number; BBU will be configured to RRU one side with the initial information of ID number corresponding RRU by the mode of HDLC broadcasting then.
This method requirement BBU and RRU must possess transmission, receive the ability of HDLC broadcast packet, also will possess the ability of transmission, reception HDLC specific information bag simultaneously.And RRU must at first obtain oneself ID number, obtains the initial information of oneself by ID number, just can set up the high level communication link with BBU then, and transfer mode is too complicated.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method of utilizing the initial information of control word configuration RRU, RRU can promptly obtain needed initial configuration information and set up and the communicating to connect of BBU, and need not pass through the HDLC broadcast packet, or other approach obtain.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of method of the initial information by control word configuration multi-stage far-end radio frequency unit may further comprise the steps:
In a, the control word between Base Band Unit BBU and remote radio unit (RRU) RRU a control word Index is set, m is initialized as 0 with its value;
N information data group is set in b, the control word between BBU-RRU, is respectively D
0, D
1, D
2... D
N-1
C, BBU send to m level remote radio unit (RRU) RRUm with Index information and above-mentioned information data array;
D, RRUm download D according to the value m of Index
mIn data and configuration give this RRU;
E, RRU add 1 with the value of Index, and send itself and initial information data set to next stage RRU;
F, repeating step d and e receive initial information data D until afterbody remote radio unit (RRU) RRUn-1
N-1
Wherein, Index described in the step a represents the numbering of the RRU that begins from BBU, be followed successively by 0,1,2 ..., n-1, i.e. its value m=0,1,2 ..., n-1.
Wherein, place the various initial informations that BBU passes to RRU in the group of information data described in the step b, comprise ID number of RRU, the MAC Address of RRU, the IP address of RRU, the MAC Address of BBU, the IP address of BBU etc.
Wherein, n information data group among Index among the described step a and the step b has the value m of fixing corresponding relation: Index to represent that m+1 the RRU that directly links with BBU should obtain D
mPairing initial information data.
Wherein, Index information and information data array send or directly send to RRUm by cascade among the described step c.
Wherein, the number n of information data group described in the step b is that maximum possible cascade number according to RRU is provided with.
The present invention has following beneficial effect:
1) among the present invention, BBU can be provided with MAC Address, IP address of RRU etc. arbitrarily, has guaranteed the flexibility of system works;
2) the sign ID of each RRU can be provided with arbitrarily;
3) transfer mode of MAC/IP is simply rapid, computational process that need not be complicated;
4) the cascade quantity of the RRU that the present invention supported is unrestricted;
The method of the configuration initial information of 5) introducing among the present invention can be widely used in the wireless communication systems such as WCDMA, CDMA, GSM, TD-SCDMA, WiMax.
Description of drawings
Fig. 1 is the star-like networking mode schematic diagram between BBU and the RRU;
Fig. 2 is the chain networking mode schematic diagram between BBU and two RRU;
Fig. 3 is the flow chart of the method for the invention;
Fig. 4 is the enforcement block diagram of the method for the invention;
Fig. 5 is Index and the position view of initial information data in control word in the embodiment of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
Fig. 3 is the flow chart of method proposed by the invention, comprises step:
A control word Index is set in step a, the control word between BBU and RRU, and m is initialized as 0 with its value.
Described Index represents the numbering of the RRU that begins from BBU, be followed successively by 0,1,2 ....With the CPRI interface is example, the Vendor Specific part in 256 control words of CPRI, and the shared address of definition Index is a control word 16, as shown in Figure 5.
Count n according to the maximum possible cascade of RRU in step b, the control word between BBU-RRU n information data group is set, be respectively D
0, D
1, D
2... D
N-1, and initialization.
For example, definition D
0Use control word 17, D
1Use control word 81, D
2Use control word 145, D
3Use control word 209, D
4Use control word 18 ..., as shown in Figure 5.
The data of above-mentioned a plurality of bytes are used to place the various initial informations that BBU passes to RRU, comprising: the ID of RRU number, the MAC Address of RRU, the IP address of RRU, the MAC Address of BBU, the IP address of BBU etc.D
mData structure can define by following mode:
{
The ID of RRU number;
The MAC Address of RRU;
The IP address of RRU;
The MAC Address of BBU;
The IP address of BBU;
......
CRC
}
N initial information counted D
0, D
1, D
2... D
N-1With the Index in the step 1 a fixing corresponding relation is arranged: during Index=0, expression and first RRU that BBU directly links should be obtained control word D
0Pairing initial information data; Index=1 represents that the 2nd RRU should obtain D
1Pairing initial information data; ...; During Index=n-1, represent n RRU, should obtain D
N-1Pairing initial information data.
Step c, BBU send to m level remote radio unit (RRU) RRUm with Index information and above-mentioned information data array.
Steps d, RRUm download D according to the value m of Index
mIn data and configuration give this RRU.
Step e, RRU add 1 with the value m of Index, and send itself and initial information data set to next stage RRU.
Step f, repeating step d and e receive initial information data D until afterbody remote radio unit (RRU) RRUn-1
N-1
After enforcement block diagram as shown in Figure 4, RRU0 receive Index and n information data group, get D according to the numerical value m (m=0 this moment) of Index
0As the information data of RRU at the corresponding levels, download D
0In data and configuration give this RRU.Obtain m=1 after then m being added 1, and by this RRU the numerical value m of Index is sent to second level remote radio unit (RRU) RRU1, the initial information data then directly are transparent to next stage RRU; After RRU1 receives the numerical value m (this moment m=1) and n information data group of Index, according to m=1, download D
1In data and configuration give RRU1, obtain m=2 after then m being added 1, and the numerical value of Index sent to third level remote radio unit (RRU) RRU2, then continue transparent transmission for the initial information data and go down.So repeatedly, to the last one-level remote radio unit (RRU) RRUn-1 receives initial information data D
N-1
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1, a kind of method of the initial information by control word configuration multi-stage far-end radio frequency unit is characterized in that, may further comprise the steps:
In a, the control word between Base Band Unit BBU and remote radio unit (RRU) RRU a control word Index is set, m is initialized as 0 with its value;
N information data group is set in b, the control word between BBU-RRU, is respectively D
0, D
1, D
2... D
N-1
C, BBU send to m level remote radio unit (RRU) RRUm with Index information and above-mentioned information data array;
D, RRUm download D according to the value m of Index
mIn data and configuration give this RRU;
E, RRU add 1 with the value of Index, and send itself and initial information data set to next stage RRU;
F, repeating step d and e receive initial information data D until afterbody remote radio unit (RRU) RRU n-1
N-1
2, the method for the initial information by control word configuration multi-stage far-end radio frequency unit as claimed in claim 1 is characterized in that, Index described in the step a represents the numbering of the RRU that begins from BBU, be followed successively by 0,1,2 ..., n-1, i.e. its value m=0,1,2 ..., n-1.
3, the method that disposes the initial information of multi-stage far-end radio frequency unit by control word as claimed in claim 1, it is characterized in that, place BBU in the group of information data described in the step b and pass to the various initial informations of RRU, comprise ID number of RRU, the MAC Address of RRU, the IP address of RRU, the MAC Address of BBU, the IP address of BBU etc.
4, utilization as claimed in claim 1 is by the method for the initial information of control word configuration multi-stage far-end radio frequency unit, it is characterized in that n information data group among Index among the described step a and the step b has the value m of fixing corresponding relation: Index to represent that m+1 the RRU that directly links with BBU should obtain D
mPairing initial information data.
5, utilization as claimed in claim 1 is characterized in that by the method for the initial information of control word configuration multi-stage far-end radio frequency unit Index information and information data array send or directly send to RRUm by cascade among the described step c.
6, utilization as claimed in claim 1 is characterized in that by the method for the initial information of control word configuration multi-stage far-end radio frequency unit, and the number n of the group of information data described in the step b is that the maximum possible cascade number according to RRU is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710073835A CN100589623C (en) | 2007-04-11 | 2007-04-11 | Method for configuring initial information of multi-stage far-end radio frequency unit via control word |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710073835A CN100589623C (en) | 2007-04-11 | 2007-04-11 | Method for configuring initial information of multi-stage far-end radio frequency unit via control word |
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|---|---|
| CN101072419A true CN101072419A (en) | 2007-11-14 |
| CN100589623C CN100589623C (en) | 2010-02-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010133152A1 (en) * | 2009-05-18 | 2010-11-25 | 中兴通讯股份有限公司 | System and method for remote radio unit finding and topology structure establishment |
| CN101437321B (en) * | 2007-11-15 | 2010-12-08 | 中兴通讯股份有限公司 | Method for signaling cascade for radio frequency zooming unit |
| WO2011079771A1 (en) * | 2009-12-28 | 2011-07-07 | 电信科学技术研究院 | Method, system and device for data transmission |
| CN101442798B (en) * | 2007-11-22 | 2011-10-26 | 中兴通讯股份有限公司 | Ascending/descending synchronous communication method for radio base station control node and cascade far-end node thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7047028B2 (en) * | 2002-11-15 | 2006-05-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Optical fiber coupling configurations for a main-remote radio base station and a hybrid radio base station |
| CN100450248C (en) * | 2005-06-30 | 2009-01-07 | 华为技术有限公司 | Method of radio frequency remoto module management maintenance |
-
2007
- 2007-04-11 CN CN200710073835A patent/CN100589623C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101437321B (en) * | 2007-11-15 | 2010-12-08 | 中兴通讯股份有限公司 | Method for signaling cascade for radio frequency zooming unit |
| CN101442798B (en) * | 2007-11-22 | 2011-10-26 | 中兴通讯股份有限公司 | Ascending/descending synchronous communication method for radio base station control node and cascade far-end node thereof |
| WO2010133152A1 (en) * | 2009-05-18 | 2010-11-25 | 中兴通讯股份有限公司 | System and method for remote radio unit finding and topology structure establishment |
| 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 |
| WO2011079771A1 (en) * | 2009-12-28 | 2011-07-07 | 电信科学技术研究院 | Method, system and device for data transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100589623C (en) | 2010-02-10 |
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