CN106375014A - BBU-RRU time-delay setting method and apparatus - Google Patents
BBU-RRU time-delay setting method and apparatus Download PDFInfo
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- CN106375014A CN106375014A CN201510435465.4A CN201510435465A CN106375014A CN 106375014 A CN106375014 A CN 106375014A CN 201510435465 A CN201510435465 A CN 201510435465A CN 106375014 A CN106375014 A CN 106375014A
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- rru
- bbu
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- caching
- time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
Abstract
The invention discloses a BBU-RRU time-delay setting method and apparatus. The method comprises the following steps: obtaining a fiber length between a BBU and an RRU; obtaining a cache time delay Trru needed by the RRU and an air interface initial lead Ta corresponding to the RRU; sending the obtained fiber length, the cache time delay Trru needed by the RRU and the air interface initial lead Ta corresponding to the RRU to the RRU; according to the cache capability of each switch node in the BBU and the cache time delay Trru needed by the RRU, obtaining a cache time delay corresponding to each switch node in the BBU; and according to the obtained cache time delay corresponding to each switch node in the BBU, setting the cache time delay of each switch node in the BBU. According to the scheme provided by the invention, cache pressure of the RRU can be shared by use of the cache capability of each switch node at the side of the BBU, and the actual remote capability of a base station is improved.
Description
Technical field
The present invention relates to mobile communication technology field, espespecially a kind of bbu-rru time delay method to set up and dress
Put.
Background technology
Tdd (time division duplexing, time division duplex) system has strict time alignment to require,
Slightly deviation can bring system kpi (key performance indication, i.e. critical sales index)
Decline.
Tdd receives user face data, is converted to same-phase orthogonal data, through certain path from eating dishes without rice or wine
Send.Path is with reference to Fig. 1.
As in Fig. 1, data sends through a1 from data source, b2, c1, d1, e1, f1 port is through reaching a standard
Heart optical fiber reaches rru；Just an iq link exchange is constituted between a1, b2, c1, d1, e1, f1,
The iq of multiple axc (antenna-carrier, antenna one carrier wave) can be accommodated on every iq link exchange
Data, the correlation such as the message transmission rate of the concrete quantity accommodating axc and port, coded system.
Rru (radio remote unit wireless remote unit) and bbu (baseband unit, Base Band Unit)
Need after completing link setup to carry out latency measurement, for example, being connected between bbu and rru is that optical fiber connects,
Rru and bbu needs to carry out optical-fiber time-delay measurement after completing link setup so that the data that bbu sends can
Align on eating dishes without rice or wine.Optical-fiber time-delay measurement reference point is as shown in Figure 2.By optical fiber measurement, obtain r1
To the time delay of r2, according to above-mentioned time delay, setting eat dishes without rice or wine lead so that the data that sends of bbu simultaneously
Reach ra.There is shown herein the connection signal of bbu and rru, in same cell, each
Rru is disposed as eating dishes without rice or wine to align.
Baseband board in bbu side in Fig. 1, power board, these processing links of Optical Fiber Interface Board all exist
Time delay.Original initial time delay collocation method is static state setting: 1, is directed to identical veneer or identical optical port
The maximum delay parameter that the rru of upper connection arranges a fixation is lead of eating dishes without rice or wine, and lead of eating dishes without rice or wine is
Bbu optical port is sent to the time delay between eating dishes without rice or wine to send, and bbu side needs to press this parameter when optical port sends
Alignd；2nd, enter row cache in the afterbody of iq link exchange and beginning one-level.Original this
Kind of mode brings all many restrictions, due to lead of eating dishes without rice or wine be for veneer or optical port it is impossible to
Support the different rru of the ability of connection in same veneer or optical port well, limit it and really draw
Remote ability；It is to be fixedly installed although bringing the simplification of design additionally, due to this lead, but operation
Complexity marry again and give user, the incorrect problem brought is arranged for time delay, under user even more has no way of
Handss；In addition, nor sharing rru's using the caching capabilities of each switching node in bbu side well
Caching pressure.
Content of the invention
In order to solve the above problems, the present invention proposes a kind of bbu-rru time delay method to set up and device,
The caching pressure of rru can be shared using the caching capabilities of each switching node in bbu side.
In order to achieve the above object, the present invention proposes a kind of bbu-rru time delay method to set up, described
Bbu-rru time delay method to set up includes:
Obtain the fiber lengths l between bbu and rrubbu-rru；
Obtain caching delay trru and the corresponding lead ta that eats dishes without rice or wine of rru that rru needs；
The affiliated fiber lengths l that will obtainbbu-rru, and described rru need caching delay trru
Eat dishes without rice or wine lead t corresponding with rruaIt is sent to rru；
Caching capabilities according to each switching node in bbu and caching delay trru of rru needs,
Obtain the corresponding caching delay of each switching node in bbu；
According to obtain described bbu in the corresponding caching delay of each switching node, in bbu each
The caching delay of switching node is configured.
Preferably, the fiber lengths l between described acquisition bbu and rrubbu-rruIncluding:
Bbu sends optical-fiber time-delay measurement request command to rru；
Rru receives described optical-fiber time-delay and measures request command, and according to described optical-fiber time-delay measurement request life
Order, execution optical-fiber time-delay measurement operation, and generate corresponding optical-fiber time-delay measurement response results；
Described optical-fiber time-delay measurement response results are sent to bbu by rru；
Bbu reception optical fiber latency measurement response results, and response results are measured according to described optical-fiber time-delay,
Calculate the fiber lengths l between bbu and rrubbu-rru.
Preferably, described acquisition rru needs caching delay trru and the corresponding lead of eating dishes without rice or wine of rru
taIncluding:
Calculate bbu caching capabilities tbbumax；
Zoomed out apart from t according to maximumZoom out, bbu caching capabilities tbbumax, and rru caching capabilities
trruumax, calculate caching delay trru that rru needs；
According to time delay t on path between bbu and rruOptical fiber, maximum zooms out apart from tZoom out、rru
Time delay t2a between caching delay trru needing and rru optical port and antenna opening, calculates rru
The corresponding lead t that eats dishes without rice or winea.
Preferably, also included before calculating caching delay trru that rru needs:
Calculate bbu caching capabilities tbbumax；
Wherein, the caching capabilities of bbu be bbu in each switching node maximum delay caching capabilities it
With.
Preferably, the affiliated fiber lengths l that will be obtained by optical-fiber time-delay parameter configuration orderbbu-rru、
And caching delay trru that needs of described rru and the corresponding lead t that eats dishes without rice or wine of rruaIt is sent to
rru.
Preferably it is characterised in that the described caching capabilities according to each switching node in bbu and
Caching delay trru that rru needs, obtains the corresponding caching delay of each switching node in bbu and includes:
Calculate time delay t that bbu needs to compensatebbu；
Need time delay t compensating according to bbubbu, and each switching node maximum delay caching capabilities,
Calculate the time delay that each switching node needs to compensate.
In order to achieve the above object, the invention allows for a kind of bbu-rru time delay arranges device, institute
State device to include:
Fiber lengths acquiring unit, for obtaining the fiber lengths l between bbu and rrubbu-rru；
Rru configures acquiring unit, and caching delay trru for obtaining rru needs is corresponding with rru
The lead ta that eats dishes without rice or wine；
Rru configures transmitting element, for the affiliated fiber lengths l that will obtainbbu-rru, and described rru
Caching delay trru needing and the corresponding lead t that eats dishes without rice or wine of rruaIt is sent to rru；
Bbu time delay acquiring unit, for bbu according to the caching capabilities of each switching node in bbu with
And caching delay trru that rru needs, obtain the corresponding caching delay of each switching node in bbu；
Bbu dispensing unit, for according to the corresponding caching of each switching node in the described bbu obtaining
Time delay, is configured to the caching delay of each switching node in bbu.
Preferably, described fiber lengths acquiring unit includes:
Request module, for sending optical-fiber time-delay measurement request command to rru；
Computing module, for receiving the optical-fiber time-delay measurement response results of rru transmission, and according to described
Optical-fiber time-delay measures response results, calculates the fiber lengths l between bbu and rrubbu-rru.
Preferably, described rru configuration acquiring unit includes:
Bbu caches computing module, for calculating bbu caching capabilities tbbumax；
The caching delay acquisition module that rru needs, for zooming out apart from t according to maximumZoom out, bbu delay
Deposit ability tbbumax, and rru caching capabilities trruumax, calculate the caching delay that rru needs
trru；
Eat dishes without rice or wine lead acquisition module, for according to time delay t on path between bbu and rruOptical fiber、
Maximum zooms out apart from tZoom out, caching delay trru that needs of rru and rru optical port and antenna opening it
Between time delay t2a, calculate the corresponding lead t that eats dishes without rice or wine of rrua.
Preferably, described rru configuration acquiring unit also includes:
Bbu caching capabilities acquisition module, for calculating bbu caching capabilities tbbumax；
Wherein, the caching capabilities of bbu be bbu in each switching node maximum delay caching capabilities it
With.
Preferably, described rru configures transmitting element and passes through optical-fiber time-delay parameter configuration order and will obtain
Affiliated fiber lengths lbbu-rru, and described rru need caching delay trru and rru corresponding
Eat dishes without rice or wine lead taIt is sent to rru.
Preferably, described bbu time delay acquiring unit includes:
Bbu time delay acquisition module, time delay t compensating for calculating bbu to needbbu；
Switching node acquisition module, for needing time delay t compensating according to bbubbu, and each exchange
The maximum delay caching capabilities of node, calculate the time delay that each switching node needs to compensate.
Compared with prior art, the technical scheme that the present invention provides includes: obtains between bbu and rru
Fiber lengths lbbu-rru；Obtain caching delay trru that rru needs and rru is corresponding eats dishes without rice or wine to carry
Front amount ta；The affiliated fiber lengths l that will obtainbbu-rru, and described rru need caching delay
The corresponding lead t that eats dishes without rice or wine of trru and rruaIt is sent to rru；Bbu is according to each exchange in bbu
The caching capabilities of node and caching delay trru of rru needs, obtain each switching node in bbu
Corresponding caching delay；According to the corresponding caching delay of each switching node in the described bbu obtaining,
The caching delay of each switching node in bbu is configured.By the solution of the present invention, Neng Gouli
Share the caching pressure of rru with the caching capabilities of each switching node in bbu side, can be good at supporting
The different rru of the ability of connection on same veneer or optical port, improve base station reality zooms out ability.
Brief description
Below the accompanying drawing in the embodiment of the present invention is illustrated, the accompanying drawing in embodiment is for this
Bright further understands, and is used for explaining the present invention together with description, does not constitute and protects model to the present invention
The restriction enclosed.
Fig. 1 is the schematic diagram of switching path in existing bbu-rru；
Fig. 2 is the schematic diagram of existing fiber latency measurement reference point；
Fig. 3 proposes a kind of flow chart of bbu-rru time delay method to set up for the present invention；
Fig. 4 is the structure composition schematic diagram that bbu-rru time delay of the present invention arranges device.
Specific embodiment
For the ease of the understanding of those skilled in the art, below in conjunction with the accompanying drawings the present invention is further retouched
State, can not be used for limiting the scope of the invention.It should be noted that in the case of not conflicting,
Various modes in embodiment in the application and embodiment can be mutually combined.
Referring to Fig. 3, the present invention proposes a kind of bbu-rru time delay method to set up, described bbu-rru
Time delay method to set up includes:
Step 100, obtains the fiber lengths l between bbu and rrubbu-rru；
Being connected between bbu and rru can be the physical medium of optical fiber connection or other forms
Connect, in the embodiment of the present invention, be used optical fiber to be described as representative.
Step 200, obtains caching delay trru and the corresponding lead t that eats dishes without rice or wine of rru that rru needsa；
Wherein, ta is the lead that rru eats dishes without rice or wine relatively, represents and eats dishes without rice or wine to rru from bbu sidelight mouth
Time delay between transmission, defines ta and has no effect on herein for starting to rru to eat dishes without rice or wine to send from where
The description of content.
Step 300, the affiliated fiber lengths l that will obtainbbu-rru, and described rru need caching
Time delay trru and the corresponding lead t that eats dishes without rice or wine of rruaIt is sent to rru；
Step 400, bbu needs according to the caching capabilities of each switching node in bbu and rru
Caching delay trru, obtains the corresponding caching delay of each switching node in bbu；
Step 500 is according to the corresponding caching delay of each switching node in the described bbu obtaining, right
In bbu, the caching delay of each switching node is configured.
Fiber lengths l in step 100, between described acquisition bbu and rrubbu-rruIncluding:
Step 110, bbu sends optical-fiber time-delay measurement request command to rru；
Step 120, rru receives described optical-fiber time-delay and measures request command, and according to described optical-fiber time-delay
Measurement request command, execution optical-fiber time-delay measurement operation, and generate corresponding optical-fiber time-delay measurement response knot
Really.
In step 120, after rru receives optical-fiber time-delay measurement request command, inside analytical calculation rru
The delay profiles of each part, generate corresponding optical-fiber time-delay according to above-mentioned analysis and measure response results.
Step 130, described optical-fiber time-delay measurement response results are sent to bbu by rru；
Step 140, bbu reception optical fiber latency measurement response results, and measured according to described optical-fiber time-delay
Response results, calculate the fiber lengths l between bbu and rrubbu-rru.
In step 200, caching delay trru that described acquisition rru needs and rru is corresponding eats dishes without rice or wine to carry
Front amount taIncluding:
Step 210, calculates bbu caching capabilities tbbumax.
Wherein, the caching capabilities of bbu be bbu in each switching node maximum delay caching capabilities it
With.
Bbu caching capabilities tbbumax=∑ tnimax, wherein, tnimax is the n-th i switching node
Maximum delay caching capabilities.
For example, bbu includes three switching nodes, and the maximum delay caching capabilities of the 1st switching node are
T1max, the maximum delay caching capabilities of the 2nd switching node are t2max, the 3rd switching node
Maximum delay caching capabilities are t3max, then tbbumax=t1max+t2max+t3max.
Step 220, zooms out apart from t according to maximumZoom out, bbu caching capabilities tbbumax, and rru
Caching capabilities trruumax, calculate caching delay trru that rru needs.
Specifically, trru=f1 (tZoom out, ∑ tnimax, trrumax).
Wherein f1 represents trru and tZoom out, ∑ tnimax and trrumaxBetween functional relationship, this
Plant functional relationship to be calculated using various prior art formula or other optimized algorithms.
It is for instance possible to use taking method respectively to calculate, method calculating process respectively is as follows:
If (tZoom out-tOptical fiber- t2a) it is more than (∑ tnimax+trrumax)；
Then system cannot compensate this time delay；
If (tZoom out-tOptical fiber- t2a)/2 be less than trrumax；
Then (t zooms out-t to trru=Optical fiber-t2a)/2；
Otherwise trru=trrumax.
Wherein tOptical fiberRepresent the time delay on path between bbu and rru, obtained by optical-fiber time-delay survey calculation
Arrive, t2a is the time delay between rru optical port and antenna opening.
Step 230, according to time delay t on path between bbu and rruOptical fiber, maximum zooms out apart from tZoom out, rru need caching delay trru and rru optical port and antenna opening between time delay t2a,
Calculate the corresponding lead t that eats dishes without rice or wine of rrua.
Specifically, ta=f2 (tZoom out, tOptical fiber, trru, t2a).
Wherein f2 represents ta and tZoom out、tOptical fiber, the functional relationship between trru and t2a, this
Functional relationship can be calculated using various prior art formula or other optimized algorithms.
It is, for example possible to use simple summing mode is calculated:
Ta=tOptical fiber+trru+t2a.
In step 300, bbu passes through the affiliated fiber lengths that optical-fiber time-delay parameter configuration order will obtain
lbbu-rru, and described rru need caching delay trru and the corresponding lead t that eats dishes without rice or wine of rrua
It is sent to rru.
In step 400, the described caching capabilities according to each switching node in bbu and rru needs
Caching delay trru, obtain bbu in the corresponding caching delay of each switching node include:
Step 410, calculates time delay t that bbu needs to compensatebbu.
Wherein, tbbu=tZoom out-ta.
Step 420, needs time delay t compensating according to bbubbu, and each switching node maximum when
Prolong caching capabilities, calculate the time delay that each switching node needs to compensate.
Wherein, according to iq switching path, to obtain the annexation of each switching node in bbu.
Wherein, tni=f3 (tbbu, t1max..., tnmax).
Wherein, tbbuNeed the time delay compensating, t for bbunmaxFor n-th switching node maximum when
Prolong caching capabilities, n represents has n switching node on this iq switching path.
Wherein f3 represents tni and tbbu,t1max,……,tnmaxBetween functional relationship, this function closes
System can be calculated using various prior art formula or other optimal algorithms.
For example, bbu includes n switching node, can be calculated as follows
Wherein t1=min (tbbu,t1max), ni=2 ... ..., n；
If tni≤0, tni=0, and the calculating subsequently each nodal cache time delay of end is 0, that is, be not required to
Cache；
Otherwise tni=min (tni, tnimax).
For example, t2=tbbu–t1；
t3=tbbu–(t1+t2)；
If t2≤ 0, then t2=0, and the calculating subsequently each nodal cache time delay of end is 0, i.e. t3
And t4It is 0 it is not necessary to cache.
It is based on the same or analogous design with said method embodiment, the embodiment of the present invention also provides one kind
Bbu-rru time delay arranges device, and referring to Fig. 4, bbu-rru time delay proposed by the present invention arranges device
Including:
Fiber lengths acquiring unit 10, for obtaining the fiber lengths l between bbu and rrubbu-rru；
Rru configure acquiring unit 20, for obtain rru needs caching delay trru and rru pair
The lead ta that eats dishes without rice or wine answering；
Rru configures transmitting element 30, for the affiliated fiber lengths l that will obtainbbu-rru, and described
Caching delay trru and the corresponding lead t that eats dishes without rice or wine of rru that rru needsaIt is sent to rru；
Bbu time delay acquiring unit 40, for bbu according to the caching energy of each switching node in bbu
Power and caching delay trru of rru needs, when obtaining the corresponding caching of each switching node in bbu
Prolong；
Bbu dispensing unit 50, for corresponding slow according to each switching node in the described bbu obtaining
Deposit time delay, the caching delay of each switching node in bbu is configured.
In the embodiment of the present invention, described fiber lengths acquiring unit 10 includes:
Request module, for sending optical-fiber time-delay measurement request command to rru；
Computing module, for receiving the optical-fiber time-delay measurement response results of rru transmission, and according to described
Optical-fiber time-delay measures response results, calculates the fiber lengths between bbu and rru.
In the embodiment of the present invention, described rru configuration acquiring unit 20 includes:
Bbu caches computing module, for calculating bbu caching capabilities tbbumax；
The caching delay acquisition module that rru needs, for zooming out apart from t according to maximumZoom out, bbu delay
Deposit ability tbbumax, and rru caching capabilities trruumax, calculate the caching delay that rru needs
trru；
Eat dishes without rice or wine lead acquisition module, for according to time delay t on path between bbu and rruOptical fiber、
Maximum zooms out apart from tZoom out, caching delay trru that needs of rru and rru optical port and antenna opening it
Between time delay t2a, calculate the corresponding lead t that eats dishes without rice or wine of rrua.
In the embodiment of the present invention, described rru configuration acquiring unit also includes:
Bbu caching capabilities acquisition module, caches 0 ability t for calculating bbubbumax；
Wherein, the caching capabilities of bbu be bbu in each switching node maximum delay caching capabilities it
With.
In the embodiment of the present invention, described rru configuration transmitting element 30 is ordered by optical-fiber time-delay parameter configuration
The affiliated fiber lengths l that order will obtainbbu-rru, and described rru need caching delay trru and
The corresponding lead t that eats dishes without rice or wine of rruaIt is sent to rru.
In the embodiment of the present invention, described bbu time delay acquiring unit 40 includes:
Bbu time delay acquisition module, time delay t compensating for calculating bbu to needbbu；
Switching node acquisition module, for needing time delay t compensating according to bbubbu, and each exchange
The maximum delay caching capabilities of node, calculate the time delay that each switching node needs to compensate.
It should be noted that embodiment described above is for only for ease of those skilled in the art understanding
, it is not limited to protection scope of the present invention, in the premise of the inventive concept without departing from the present invention
Under, those skilled in the art the present invention is made any obvious replacement and improve etc. all
Within the protection domain of invention.
Claims (12)
1. a kind of bbu-rru time delay method to set up is it is characterised in that extended during described bbu-rru
The method of putting includes:
Obtain the fiber lengths l between bbu and rrubbu-rru；
Obtain caching delay trru and the corresponding lead ta that eats dishes without rice or wine of rru that rru needs；
The affiliated fiber lengths l that will obtainbbu-rru, and described rru need caching delay trru
Eat dishes without rice or wine lead t corresponding with rruaIt is sent to rru；
Caching capabilities according to each switching node in bbu and caching delay trru of rru needs,
Obtain the corresponding caching delay of each switching node in bbu；
According to obtain described bbu in the corresponding caching delay of each switching node, in bbu each
The caching delay of switching node is configured.
2. bbu-rru time delay method to set up according to claim 1 is it is characterised in that described
Obtain the fiber lengths l between bbu and rrubbu-rruIncluding:
Bbu sends optical-fiber time-delay measurement request command to rru；
Rru receives described optical-fiber time-delay and measures request command, and according to described optical-fiber time-delay measurement request life
Order, execution optical-fiber time-delay measurement operation, and generate corresponding optical-fiber time-delay measurement response results；
Described optical-fiber time-delay measurement response results are sent to bbu by rru；
Bbu reception optical fiber latency measurement response results, and response results are measured according to described optical-fiber time-delay,
Calculate the fiber lengths l between bbu and rrubbu-rru.
3. bbu-rru time delay method to set up according to claim 1 is it is characterised in that described
Obtain caching delay trru of rru needs and the corresponding lead ta that eats dishes without rice or wine of rru include:
Calculate bbu caching capabilities tbbumax；
Zoomed out apart from t according to maximumZoom out, bbu caching capabilities tbbumax, and rru caching capabilities
trruumax, calculate caching delay trru that rru needs；
According to time delay t on path between bbu and rruOptical fiber, maximum zooms out apart from tZoom out、rru
Time delay t2a between caching delay trru needing and rru optical port and antenna opening, calculates rru
The corresponding lead ta that eats dishes without rice or wine.
4. bbu-rru time delay method to set up according to claim 3 is it is characterised in that counting
Also include before calculating caching delay trru that rru needs:
Calculate bbu caching capabilities tbbumax；
Wherein, the caching capabilities of bbu be bbu in each switching node maximum delay caching capabilities it
With.
5. bbu-rru time delay method to set up according to claim 1 is it is characterised in that pass through
The affiliated fiber lengths l that optical-fiber time-delay parameter configuration order will obtainbbu-rru, and described rru need
Caching delay trru and the corresponding lead ta that eats dishes without rice or wine of rru be sent to rru.
6. bbu-rru time delay method to set up according to claim 1 is it is characterised in that described
Caching capabilities according to each switching node in bbu and caching delay trru of rru needs, obtain
In bbu, the corresponding caching delay of each switching node includes:
Calculate time delay t that bbu needs to compensatebbu；
Need time delay t compensating according to bbubbu, and each switching node maximum delay caching capabilities,
Calculate the time delay that each switching node needs to compensate.
7. a kind of bbu-rru time delay setting device is it is characterised in that described device includes:
Fiber lengths acquiring unit, for obtaining the fiber lengths l between bbu and rrubbu-rru；
Rru configures acquiring unit, and caching delay trru for obtaining rru needs is corresponding with rru
The lead ta that eats dishes without rice or wine；
Rru configures transmitting element, for the affiliated fiber lengths l that will obtainbbu-rru, and described rru
Caching delay trru needing and the corresponding lead t that eats dishes without rice or wine of rruaIt is sent to rru；
Bbu time delay acquiring unit, for bbu according to the caching capabilities of each switching node in bbu with
And caching delay trru that rru needs, obtain the corresponding caching delay of each switching node in bbu；
Bbu dispensing unit, for according to the corresponding caching of each switching node in the described bbu obtaining
Time delay, is configured to the caching delay of each switching node in bbu.
8. bbu-rru time delay according to claim 7 setting device is it is characterised in that described
Fiber lengths acquiring unit includes:
Request module, for sending optical-fiber time-delay measurement request command to rru；
Computing module, for receiving the optical-fiber time-delay measurement response results of rru transmission, and according to described
Optical-fiber time-delay measures response results, calculates the fiber lengths l between bbu and rrubbu-rru.
9. bbu-rru time delay according to claim 7 setting device is it is characterised in that described
Rru configuration acquiring unit includes:
Bbu caches computing module, for calculating bbu caching capabilities tbbumax；
The caching delay acquisition module that rru needs, for zooming out apart from t according to maximumZoom out, bbu delay
Deposit ability tbbumax, and rru caching capabilities trruumax, calculate the caching delay that rru needs
trru；
Eat dishes without rice or wine lead acquisition module, for according to time delay t on path between bbu and rruOptical fiber、
Maximum zooms out apart from tZoom out, caching delay trru that needs of rru and rru optical port and antenna opening it
Between time delay t2a, calculate the corresponding lead ta that eats dishes without rice or wine of rru.
10. bbu-rru time delay according to claim 9 setting device is it is characterised in that institute
State rru configuration acquiring unit also to include:
Bbu caching capabilities acquisition module, for calculating bbu caching capabilities tbbumax；
Wherein, the caching capabilities of bbu be bbu in each switching node maximum delay caching capabilities it
With.
11. bbu-rru time delays according to claim 7 setting devices are it is characterised in that institute
State rru and configure the affiliated fiber lengths that transmitting element will obtain by optical-fiber time-delay parameter configuration order
lbbu-rru, and described rru need caching delay trru and the corresponding lead ta that eats dishes without rice or wine of rru
It is sent to rru.
12. bbu-rru time delays according to claim 7 setting devices are it is characterised in that institute
State bbu time delay acquiring unit to include:
Bbu time delay acquisition module, time delay t compensating for calculating bbu to needbbu；
Switching node acquisition module, for needing time delay t compensating according to bbubbu, and each exchange
The maximum delay caching capabilities of node, calculate the time delay that each switching node needs to compensate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510435465.4A CN106375014B (en) | 2015-07-22 | 2015-07-22 | A kind of BBU-RRU time delay setting method and device |
| PCT/CN2016/080527 WO2017012384A1 (en) | 2015-07-22 | 2016-04-28 | Bbu-rru delay setting method and apparatus |
Applications Claiming Priority (1)
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| CN112714490A (en) * | 2020-12-29 | 2021-04-27 | 京信网络系统股份有限公司 | Time delay calibration method and device, computer equipment and computer readable storage medium |
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| CN110213797B (en) * | 2019-05-29 | 2022-05-10 | 鼎桥通信技术有限公司 | Air interface signal alignment processing method, device, equipment and storage medium |
| CN114448503A (en) * | 2020-11-04 | 2022-05-06 | 南京中兴软件有限责任公司 | Downlink data transmission method and device, storage medium and electronic device |
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| CN106375014B (en) | 2019-12-03 |
| WO2017012384A1 (en) | 2017-01-26 |
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