CN102355685A

CN102355685A - RRU (Radio Remote Unit) resetting method used under chain-type networking and method for accessing RRUs to BBU (Base Band Unit)

Info

Publication number: CN102355685A
Application number: CN201110251467XA
Authority: CN
Inventors: 何定润
Original assignee: New Postcom Equipment Co Ltd
Current assignee: Beijing Haiyun Technology Co. Ltd.
Priority date: 2011-08-26
Filing date: 2011-08-26
Publication date: 2012-02-15
Anticipated expiration: 2031-08-26
Also published as: CN102355685B

Abstract

The invention provides a RRU (Radio Remote Unit) resetting method used under chain-type networking and a method for accessing the RRU to a BBU (Base Band Unit). In the resetting method, complete resetting in which an Ir (Incremental Redundancy) link needs to be damaged and incomplete resetting in which the state of an optical fiber link is maintained is performed according to a resetting type written into a configuration file in advance. In the method for accessing the RRUs to the BBU, after the optical fiber link between each stage of RRU and the BBU is subjected to successful synchronization and failed access, the incomplete resetting for maintaining the state of the optical fiber link is performed; and the BBU performs random access management on an access request sent by each stage of RRU. By applying the methods provided by the invention, the condition that all the subsequent stages of RRUs require to be reset when a preceding stage of RRU is reset can be avoided.

Description

The repositioning method of RRU and RRU insert the method for BBU under the chain networking

Technical field

The present invention relates to the access technology in the communication system, particularly the method for the repositioning method of RRU and RRU access BBU under the chain networking.

Background technology

In the radio frequency remote base station of communication systems such as TD-SCDMA, WCDMA and LTE, the Ir interface between BBU and RRU adopts optical fiber to be connected, and in application scenes, the mode of use chain networking links together multistage RRU with the mode and the BBU of cascade.During existing Ir interfacing required, the networking mode that the RRU chain connects as shown in Figure 1.

In chain networking mode shown in Figure 1; When following several situation take place; RRU need carry out the startup that resets; Insert BBU successively according to waterfall sequence then, the situation of specifically reset startup and access BBU comprises: when NodeB plays one or more levels generation hardware or software failure of station process, BBU Ir interface side generation hardware or software failure, cascaded RRUs.

Concrete RRU reset start and the flow process of access BBU as shown in Figure 2, comprising:

Step 200, all RRU cascade electrifying startups.

Step 201, BBU-RRU (first order) carries out the optical fiber Synchronous Processing, and whether the optical fiber of RRU (first order) cycle detection afterwards is synchronous.If asynchronous, get into optical fiber and wait for synchronously, in whole Synchronous Processing process synchronously on, then arrive step 202.Otherwise wait for to surpass the maximum time that allows synchronously overtime yet synchronously on, to step 202a.

Step 202, first order RRU begins to insert processing.Because optical fiber is synchronous; The RRU ID of BBU configuration first order RRU, first RRU reads RRU ID from physical layer, and this RRU ID is set in software; And calculate next stage RRU ID and send to next stage RRU by the method for Link Ind indication, arrive step 203 then.At this moment, second level RRU optical fiber Synchronous Processing begins valid function, and its operating process forwards step 211 to.

Step 202a, wait for to surpass the maximum time that allows synchronously overtime yet synchronously on, first order RRU resets, and causes all the RRU optical fiber step-outs and the Ir communication failure of back level then, also and then resets at last.

Step 203 starts first order RRU and inserts timer, begins to insert timing.

Step 204 judges whether first order RRU inserts success, inserts successfully then execution in step 205, otherwise execution in step 205a.

Step 205 is accomplished the access of first order RRU.

Step 205a judges whether the access timer is overtime, if not overtime, then returns step 205) continue to attempt inserting, otherwise execution in step 206a.

Step 206a inserts timer expiry, and first order RRU resets, and all RRU of back level also and then reset simultaneously.

Step 211, BBU-RRU (the 2nd grade) carries out the optical fiber Synchronous Processing, and whether RRU (the 2nd grade) cycle detection optical fiber is synchronous.If asynchronous, get into optical fiber and wait for synchronously, in whole Synchronous Processing process synchronously on, then arrive step 212, otherwise wait for surpass the maximum time that allows synchronously overtime yet synchronously on, arrive step 212a.

Step 212, the 2nd grade of RRU begins to prepare to insert processing.Because optical fiber is synchronous; First order RRU can dispose the RRU ID of the 2nd grade of RRU, and the 2nd RRU reads RRU ID from physical layer, and this RRU ID is set in software; And calculate next stage RRU ID and send to next stage RRU by the method for Link Ind indication, arrive step 213 then.At this moment, 3rd level RRU optical fiber Synchronous Processing begins valid function and promptly forwards step 221 to.

Step 212a, wait for to surpass the maximum time that allows synchronously overtime yet synchronously on, the 2nd grade of RRU resets, and causes all the RRU optical fiber step-outs and the Ir communication failure of back level then, also and then resets at last.

Step 213 starts the 2nd grade of RRU and inserts timer, begins to insert timing.

Step 214 judges whether the 2nd grade of RRU inserts success, if insert successfully then execution in step 215, otherwise execution in step 215a.Can the 2nd grade of RRU successfully insert, and a precondition is arranged, be exactly in the step 204 first order RRU must successfully insert.

Step 215 completes successfully the access of the 2nd grade of RRU.

Step 215a judges whether the access timer is overtime, if not overtime, then return step 214 and continues to attempt inserting, otherwise execution in step 216a.

216a inserts timer expiry, and the 2nd grade of RRU resets, and level all RRU in back also and then reset simultaneously.

221, carry out the Synchronous Processing of 3rd level to n level RRU, flow process is identical with the 2nd grade.

222, to carry out 3rd level and handle to the access of n level RRU, flow process is identical with the 2nd grade.

Above-mentioned flow process shown in Figure 2 has realized the general access of BBU and multistage RRU chain networking, but there are some defectives in this cut-in method, is mainly reflected in:

One of which, turn-on time is longer, and access efficiency is low.In the Ir interfacing requires; Require RRU to insert BBU successively under the chain networking mode, therefore, rise in the process of station in the base station or in the base station resets start-up course or cascaded RRUs when prime RRU fault occurring and resetting according to waterfall sequence; RRU is longer turn-on time, and access efficiency is low.

Two, RRU breaks down when resetting, and Zone ability resume speed is slow.Owing to when prime RRU fault resets, can cause that back level RRU fault resets.Therefore, in the start-up course that resets, after back level RRU need wait for that prime RRU inserts, back level RRU just was allowed to access.After level RRU to recover the time that professional ability needs long, be unfavorable for the fast quick-recovery of Zone ability.

Its three, communication service quality and capacity reliability are poor.Under current chain networking technology; Because upper level or multistage RRU break down when resetting; The entire I r physical link fault that can cause the RRU of back level connection; Thereby back level RRU can't be communicated with BBU; The sub-district finally can occur and move back clothes; Make customer service behavior interruption and call drop in cell coverage area, and problems such as service can't be provided in the time for it in the start-up course that resets than long fault.

Summary of the invention

The invention provides the repositioning method of RRU under a kind of chain networking, all RRU of level situation that all need reset thereafter in the time of can avoiding prime RRU to reset.

The present invention also provides the method for RRU access BBU under a kind of chain networking, can shorten turn-on time, improves access efficiency.

For realizing above-mentioned purpose, the present invention adopts following technical scheme:

The repositioning method of a kind of RRU comprises:

Before resetting, confirm the reset types that this resets and write configuration file; Said reset types comprises: keep the non-completeness of optical fiber link state to reset and, need to destroy thoroughly resetting of Ir link;

Reset start after; From said configuration file, read reset types; If reset types resets for the non-completeness that keeps the optical fiber link state, then said RRU to the Ir link interdependent FPGA program do not download, initial configuration is not carried out in the configuration that the Ir link is relevant.

Preferably, said definite this reset types that resets is:

Judge whether resetting that this resets is resetting of BBU indication, if confirm that then this reset types that resets is for needing to destroy thoroughly resetting of Ir link; Whether otherwise judging that this resets influences the stability of Ir link; If influence; Confirm that then this reset types that resets destroys thoroughly resetting of Ir link for needing,, confirm that then this reset types that resets resets for the non-completeness that keeps the optical fiber link state if do not influence.

Preferably, preestablish the corresponding reset types configuration words of different reset types;

The said write configuration file is: the corresponding reset types configuration words of confirming of reset types is saved in the configuration file;

The said reset types of from configuration file, reading is: from configuration file, read the reset types configuration words, and confirm the reset types that this reset types configuration words is corresponding.

Multistage RRU inserts the method for BBU under a kind of chain networking, comprising:

According to the waterfall sequence under the said chain networking, to carry out optical fiber link synchronous with BBU successively for each RRU;

When arbitrary RRU and said BBU accomplish said optical fiber link synchronously after, said arbitrary RRU initiates to insert request to said BBU; After said BBU receives said access request,, then directly be that said arbitrary RRU distributes the access passage if the optical fiber link between definite and the said arbitrary RRU is intact and said access request is legal;

Behind success synchronously of the optical fiber link between a RRU and said BBU and access failure, the RRU of access failure keeps the non-completeness of optical fiber link state to reset, and after the completion that resets, carries out the optical fiber link synchronous detecting between this RRU and the said BBU;

The non-completeness of said maintenance optical fiber link state is reset to: when resetting to the Ir link interdependent FPGA program do not download, initial configuration is not carried out in the configuration that the Ir link is relevant.

Preferably, the RRU of said access failure keeps the non-completeness of optical fiber link state to reset comprising:

Before resetting, confirm that this reset types that resets resets for the non-completeness that keeps the optical fiber link state, and this reset types is write configuration file;

Preferably, preestablish the non-completeness that the keeps the optical fiber link state corresponding reset types configuration words that resets;

The said write configuration file is: the non-completeness of the said maintenance optical fiber link state corresponding reset types configuration words that resets is saved in the configuration file;

Visible by technique scheme, among the present invention, before resetting, confirm the reset types that this resets and write configuration file; Reset start after, from configuration file, read reset types, if reset types resets for the non-completeness that keeps the optical fiber link state, then RRU to the Ir link interdependent FPGA program do not download, initial configuration is not carried out in the configuration that the Ir link is relevant.The non-completeness of above-mentioned maintenance optical fiber link state resets, and in reseting procedure, does not destroy the Ir link of having set up, all RRU of level situation that all need reset thereafter in the time of therefore can avoiding prime RRU to reset.

Use said reset method in the RRU access procedure; The non-completeness of behind success synchronously of the optical fiber link between RRU and BBU and access failure, carrying out above-mentioned maintenance optical fiber link state resets; Thereby carry out non-completeness when resetting at prime RRU, still guarantee back level RRU and BBU maintenance proper communication; Simultaneously, BBU is when handling the access request of RRU initiation, if the optical fiber link between definite BBU and this RRU is intact and the access request is legal, then directly for this RRU distribution inserts passage, and does not require that all prime RRU of this RRU have all accomplished access.Like this, can shorten turn-on time greatly, improve access efficiency.

Description of drawings

The networking mode sketch map that Fig. 1 connects for the RRU chain;

The schematic flow sheet that Fig. 2 resets and starts and insert BBU for existing RRU;

Fig. 3 is the particular flow sheet of RRU repositioning method under the chain networking among the present invention;

Fig. 4 is the sketch map of cascaded RRUs access process under the chain networking mode of the present invention;

Fig. 5 inserts the schematic flow sheet of handling for BBU side cascade in the RRU cut-in method among the present invention.

Embodiment

For making the object of the invention, technological means and advantage clearer, the present invention is explained further details below in conjunction with accompanying drawing.

It is visible at first to analyze existing RRU access process shown in Figure 2; Under this implementation; Influencing the principal element that chain networking RRU inserts is: in whole cascade access procedure, whether the access of prime RRU, directly synchronous, the access state of the optical fiber of influence back level RRU etc.The i.e. access of back level RRU must depend on access and the running status thereof of prime RRU.Its access process; At first cascaded RRUs integral body powers up or the startup that resets, and it is synchronous that first order RRU carries out optical fiber link afterwards, after first order RRU optical fiber link is synchronous; Subsequent cascaded RRU under the synchronous prerequisite of prime RRU optical fiber link, attempts realizing that optical fiber link is synchronous successively.When cascaded RRUs optical fiber at the corresponding levels is synchronous, begin to attempt inserting BBU, under the situation that BBU side judgement prime RRU does not insert, do not allow back level RRU to insert.RRU is behind access failure or fault when resetting, and RRU at the corresponding levels will reset.After RRU at the corresponding levels resetted, the optical fiber physical link was destroyed, and back level RRU can follow long period optical fiber step-out, and last result is all the back level RRU system resets after the RRU at the corresponding levels.

In above-mentioned flow process, the access of prime RRU whether directly an influence back level RRU whether can insert processing, wherein, the processing that specifically restricts has two places: one, prime RRU optical fiber link synchronously after, the optical fiber link that just can carry out back level RRU is synchronous; Two, prime RRU optical fiber link synchronously and after inserting successfully, BBU just can handle the access request of back level RRU.

In above-mentioned first and since relate to the Ir physical link synchronously, therefore, under chain networking, synchronously whether the physical link that the physical link of back level RRU must be limited by prime RRU synchronously.And in above-mentioned second, when a prime RRU and a back level RRU all accomplish optical fiber link synchronously after, in fact the Ir physical link between RRU and BBU has been set up completion, can realize communicating by letter; At this moment, on the intact basis of Ir physical link, it is to optimize in proper order that BBU inserts processing of request to different RRUs, to realize what access process was optimized.

Visible by above-mentioned analysis, when carrying out access process optimization, intact based on the Ir physical link between two point: prime RRU and back level RRU and BBU; BBU inserts processing of request to different RRUs and is optimized in proper order.

Based on above-mentioned analysis; The present invention provides a kind of new RRU repositioning method; Can keep the non-completeness of optical fiber link state to reset as required; In this reseting procedure; Do not destroy the RRU that set up and the Ir link synchronization between BBU; Thereby when prime RRU is resetted, do not influence thereafter the Ir link between level RRU and BBU.

Based on this new RRU repositioning method; The present invention further provides the method that a kind of multistage RRU inserts BBU; Wherein, Optical fiber link success synchronously when between certain RRU of cascade and BBU but behind the access failure; Carrying out the above-mentioned non-completeness of not destroying Ir physical link, maintenance optical fiber link state resets; Thereby in this reseting procedure, do not destroy thereafter the Ir link between level RRU and BBU; Simultaneously; BBU is when handling the access request of RRU; Adopt access-in management at random; Do not require after prime RRU must insert success and handle the access request of level RRU thereafter again; But when the intact and request that inserts is legal, just directly be this RRU distribution access passage when the optical fiber link between BBU and the arbitrary RRU.

Next, at first describe the new RRU repositioning method that the present invention provides in detail.Fig. 3 is the particular flow sheet of RRU repositioning method under the chain networking among the present invention.As shown in Figure 3, this method comprises:

Step 301 before resetting, is confirmed the reset types that this resets and is write configuration file.

Wherein, reset types comprises: keep the non-completeness of optical fiber link state to reset and, need to destroy thoroughly resetting of Ir link.Certainly, those skilled in the art also can set more reset types as required.

The concrete mode of confirming this reset types that resets can for: judge whether resetting that this resets is resetting of BBU indication, if confirm that then this reset types that resets is for needing to destroy thoroughly resetting of Ir link; Whether otherwise judging that this resets influences the stability of Ir link; If influence; Confirm that then this reset types that resets destroys thoroughly resetting of Ir link for needing,, confirm that then this reset types that resets resets for the non-completeness that keeps the optical fiber link state if do not influence.

With the reset types of confirming write configuration file mode can for: preestablish the corresponding reset types configuration words of different reset types; The corresponding reset types configuration words of confirming of reset types is saved in the configuration file.

Step 302 resets after the startup, from configuration file, reads reset types.

If in step 301, the reset types configuration words that reset types is corresponding is saved in the configuration file, then in this step, from configuration file, reads the reset types configuration words, and confirms the reset types that this configuration words is corresponding.

Step 303, the reset types that determining step 302 is read, if reset types resets for the non-completeness that keeps the optical fiber link state, then execution in step 304, otherwise, execution in step 305.

Step 304, RRU to the Ir link interdependent FPGA program do not download, initial configuration is not carried out in the configuration that the Ir link is relevant.

Through the processing of this step, realize remaining unchanged of Ir Link State, accomplished simultaneously and resetted.

Step 305 is carried out RRU according to existing mode and is resetted.

So far, the RRU repositioning method flow process among the present invention finishes.

In the above-mentioned RRU repositioning method, introduce to keep the RRU fault of the optical fiber link state notion that resets, help to improve the professional reliability of system communication.Particularly; RRU is under the synchronous situation of optical fiber link; Carry out the non-start-up operation that thoroughly resets that keeps the Ir link; To the Ir link interdependent Ir FPGA program do not download; Initial configuration is not carried out in some configurations to the IR link is relevant, and this reset mode can not cause the state quality of Ir link at the corresponding levels, can not cause that back level RRU produces the Ir link failure; Just can not cause therefore that back level RRU produces link failure yet, thereby can not cause back level RRU to reset.Can keep back level RRU Zone ability, make base station system under RRU resets fault, still can keep bigger communication service capabilities, avoid because resetting of prime RRU causes whole base station system communication service fault.

Next, the method to RRU access BBU among the present invention is described in detail.

In chain networking RRU access technology scheme of the present invention; Its main flow is: at first cascaded RRUs integral body powers up or the startup that resets; Start-up course loads FPGA, and carries out corresponding FPGA and Ir interface initialization, and first order RRU carries out optical fiber synchronous regime detection processing then.After on optical fiber is synchronous, BBU distributes RRU ID to give first order RRU, and first order RRU gets into and inserts handling process then.First order RRU optical fiber synchronously on after, second level RRU also begins to get into optical fiber and effectively detects synchronously, second level RRU optical fiber synchronously after, the access that begins to get into second level RRU, back level RRU synchronously and insert handling process by that analogy.BBU adopts access-in management at random to cascaded RRUs, and the RRU that the BBU side can directly be handled all cascades inserts request message.Even prime RRU does not successfully insert,, when back level RRU inserts request, need not judge also whether prime RRU inserts as long as the Ir link is intact.Therefore, whether the access of prime RRU can not influence access efficiency and the effect of back level RRU.

Carrying out detailed process in the face of the main technical points that the present invention relates to down describes.The cascaded RRUs access process specifically comprises as shown in Figure 4 under the chain networking mode of the present invention:

Step 400, all RRU cascade electrifying startups.

Step 401, whether BBU-RRU (first order) carries out cycle detection optical fiber synchronous, if asynchronous; Get into optical fiber and wait for synchronously, on synchronous in whole Synchronous Processing process, then arrive step 402; Otherwise wait for to surpass maximum time of allowing synchronously yet synchronously on, then arrive step 402a.

Step 402, first order RRU begins to insert processing, calculates next stage RRU ID and transmission.

Because optical fiber is realized synchronously; Therefore BBU disposes the RRU ID of first order RRU, and first order RRU reads RRU ID from physical layer, and this RRU ID is set in software; And calculate next stage RRU ID and send to next stage RRU by the method for Link Ind indication, arrive step 403 then.Second level RRU optical fiber Synchronous Processing begins valid function, forwards step 411 to.

Step 402a, wait for to surpass maximum time of allowing synchronously yet synchronously on, first order RRU thoroughly resets, back all RRU of level also together reset.

Step 403 starts first order RRU and inserts timer, begins to insert timing.

Step 404 judges whether first order RRU inserts success, if insert successfully then execution in step 405, otherwise execution in step 405a.

Step 405 completes successfully the access of first order RRU.

Step 405a judges whether the access timer is overtime, if not overtime, then return step 404 and continues to attempt inserting, otherwise execution in step 406a.

Step 406a inserts timer expiry, and first order RRU resets, and carries out non-thoroughly the resetting that keeps the Ir link.

Step 411, whether BBU-RRU (the 2nd grade) carries out cycle detection optical fiber synchronous, if asynchronous, get into optical fiber and wait for synchronously, in whole Synchronous Processing process synchronously on, then execution in step 412.Otherwise wait for to surpass maximum time of allowing synchronously yet synchronously on, execution in step 412a then.

Step 412, the 2nd grade of RRU begins to prepare to insert processing, calculates next stage RRU ID and transmission.

Because optical fiber is synchronous; First order RRU disposes the RRU ID of the 2nd grade of RRU, and the 2nd RRU reads RRU ID from physical layer, and this RRU ID is set in software; And calculate next stage RRU ID and send to next stage RRU by the method for Link Ind indication, arrive step 413 then.At this moment, 3rd level RRU optical fiber Synchronous Processing begins valid function, forwards step 421 to.

Step 412a gets into optical fiber and waits for synchronously, if in the wait process synchronously on, if wait timeout yet synchronously on, then the 2nd grade of RRU thoroughly resets, and causes that simultaneously all RRU of back level reset.

Step 413 starts the 2nd grade of RRU and inserts timer, begins to insert timing.

Step 414 judges whether the 2nd grade of RRU inserts success, if insert successfully then execution in step 415, otherwise execution in step 415a.

Step 415 completes successfully the access of the 2nd grade of RRU.

Step 415a, whether overtime, if not overtime, then return step 414 if inserting timer, continue to attempt inserting, otherwise execution in step 416a.

Step 416a inserts timer expiry, and the 2nd grade of RRU carries out non-thoroughly the resetting that keeps the Ir link.

Step 421,3rd level is identical with the 2nd grade flow process to the Synchronous Processing of n level RRU.

Step 422,3rd level is handled identical with the 2nd grade flow process to the access of n level RRU.

Step 422a, 3rd level thoroughly resets to n level RRU.

In above-mentioned flow process, the non-completeness of maintenance Ir link resets and is aforementioned repositioning method shown in Figure 3.Here just repeat no more.

Based on above analysis, provide the detailed introduction of several sub-processes of cascaded RRUs access process under the technology of the present invention below in conjunction with flow process.

One, chain networking BBU-RRU cascade inserts and handles

In the BBU side, BBU adopts access-in management at random to cascaded RRUs.Chain networking RRU side joint is gone into message request, need not cascaded RRUs and insert with the progression order, it is irrelevant mutually, separate to insert message.

Give to describe in detail below in conjunction with flow process, flow chart as shown in Figure 5.

Message interaction process explanation between A, BBU-RRU:

At first the RRU of n level sends UDP the whole network broadcast to BBU, after BBU receives its message, sends UDP the whole network broadcast allocation n level RRU ip ground.BBU-n level is set up the RRUir link then, and after the ir link establishment finished, n level RRU send to insert request message to BBU, and after BBU received this message, whether it legal with analysis judgment, and legal then the transmission to n level RRU inserted channel arrangement message.The n level receives and inserts channel arrangement message, carries out relevant configuration, accomplishes the passage access and sets up flow process.

B, the cascade of BBU side insert the handling process explanation:

Step 501, BBU receives the access request message that RRU sends to BBU.

Step 502, BBU resolves and inserts request message.

Step 503 judge to insert whether legitimacy of request message, if illegal, then disregards, if legal, then execution in step 504.

Step 504 is sent access channel arrangement message to n level RRU, distributes and inserts passage.

The cascade of RRU side inserts in the handling process, and the processing of RRU at different levels is identical, and going into flow process with first order RRU side joint shown in Figure 5 below is that example describes:

Step 511, first order RRU sends to BBU and inserts request message.

Step 512, first order RRU waits for the access channel arrangement message of BBU, message then arrives step 513 as if receiving, otherwise to step 513a.

Step 513 is carried out channel arrangement, and execution in step 514.

Step 514, first order RRU sets up successfully to the passage of BBU, inserts and accomplishes.

Step 513a returns step 511, continues to attempt inserting request, when request number of times surpasses threshold limit, then execution in step 514a.

Step 514a, first order RRU carry out and keep the RRU fault of optical fiber link state to reset.

The RRU cut-in method of the invention described above has following advantage:

1) it is fast that the integral body of base station plays station speed.Level RRU access effect and efficient do not influence each other basically before and after the cascaded RRUs.Whether the Ir physical link that the access of back level RRU only depends on prime RRU synchronism stability, and the integral body that can improve the base station plays station speed.

2) help to improve the professional reliability of system communication.Introduce to keep the RRU fault of the optical fiber link state notion that resets; Be that RRU is under the synchronous situation of optical fiber link; Carry out the non-start-up operation that thoroughly resets that keeps the Ir link; To the Ir link interdependent Ir FPGA program do not download; Initial configuration is not carried out in some configurations to the IR link is relevant; This reset mode can not cause that back level RRU produces the Ir link failure, thereby can not cause back level RRU to reset.Can keep back level RRU Zone ability, make base station system under RRU resets fault, still can keep bigger communication service capabilities, avoid because resetting of prime RRU causes whole base station system communication service fault.

3) in the BBU side, BBU adopts access-in management at random to cascaded RRUs.Chain networking RRU side joint is gone into message request handle, need not insert with the progression order by cascaded RRUs again, it is irrelevant mutually, separate to insert message.Can accelerate RRU access speed and efficient, improve station speed; When the RRU system failure resets, restoring communication professional ability that can prestissimo.

The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.

Claims

1. the repositioning method of a RRU is characterized in that, this method comprises:

2. method according to claim 1 is characterized in that, said definite this reset types that resets is:

3. method according to claim 1 and 2 is characterized in that, preestablishes the corresponding reset types configuration words of different reset types;

4. multistage RRU inserts the method for BBU under the chain networking, it is characterized in that this method comprises:

5. method according to claim 4 is characterized in that, the RRU of said access failure keeps the non-completeness of optical fiber link state to reset comprising:

6. according to claim 4 or 5 described methods, it is characterized in that, preestablish the non-completeness that the keeps the optical fiber link state corresponding reset types configuration words that resets;