CN106941448B - A kind of system and method transmitting CPRI interface on packet equipment - Google Patents
A kind of system and method transmitting CPRI interface on packet equipment Download PDFInfo
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- CN106941448B CN106941448B CN201710108026.1A CN201710108026A CN106941448B CN 106941448 B CN106941448 B CN 106941448B CN 201710108026 A CN201710108026 A CN 201710108026A CN 106941448 B CN106941448 B CN 106941448B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000006798 recombination Effects 0.000 claims abstract description 16
- 238000005215 recombination Methods 0.000 claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 4
- 230000011218 segmentation Effects 0.000 claims description 3
- 229910017435 S2 In Inorganic materials 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- 230000006855 networking Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 101000911390 Homo sapiens Coagulation factor VIII Proteins 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 102000057593 human F8 Human genes 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229940047431 recombinate Drugs 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
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- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
- H04L12/4645—Details on frame tagging
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
- H04L45/502—Frame based
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/82—Miscellaneous aspects
- H04L47/825—Involving tunnels, e.g. MPLS
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses a kind of on packet equipment transmits the system and method for CPRI interface, the system includes: source packet equipment platform, CPRI optical signal for will receive is converted into CPRI electric signal, CPRI electric signal is cut into the CPRI data slicer of regular length, and CPRI grouping packet is obtained plus the fixed frame head of RTP and control word on CPRI data slicer；The CPRI is grouped packet addition MPLS/VLAN mark, is packaged into ethernet frame；Egress packet equipment platform carries out recombination and restores to obtain continuous CPRI electric signal, and the CPRI electric signal is sent to corresponding user for restoring CPRI data slicer from the ethernet frame received.The invention enables packet equipments can apply in wireless forward pass network, expands the networking capability and application range of packet equipment.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to it is a kind of on packet equipment transmit CPRI interface system and side
Method.
Background technique
Data transfer platform is packet transfer device mostly, and it is more excellent that Packet Transport Network PTN provides a performance, it is compatible with
Too net, the various technology unifications of SDH, PDH delivery platform, eliminate the diversity of network construction type, instead interface type
Diversity.But PTN does not have time gas exchange transfer capability, so that PTN can not directly transmit common public radio interface
CPRI business causes PTN that cannot apply in wireless forward pass network, and PTN application range is smaller, results in waste of resources.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide one kind, and CPRI is transmitted on packet equipment
The system and method for interface expands the networking capability of packet equipment so that packet equipment can apply in wireless forward pass network
And application range.
To achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of system transmitting CPRI interface on packet equipment, comprising:
Source packet equipment platform, the CPRI optical signal for will receive are converted into CPRI electric signal, by CPRI telecommunications
It number is cut into the CPRI data slicer of regular length, and is obtained on CPRI data slicer plus the fixed frame head of RTP and control word
CPRI grouping packet；The CPRI is grouped packet addition MPLS/VLAN mark, is packaged into ethernet frame；
Egress packet equipment platform is carried out for restoring CPRI data slicer from the ethernet frame received
Recombination restores to obtain continuous CPRI electric signal, and the CPRI electric signal is sent to corresponding user.
Based on the above technical solution, the source packet equipment platform includes:
CPRI receiving module, for converting CPRI electric signal for the received CPRI optical signal of source packet equipment platform,
And extract timing system reference source of the clock as source packet equipment platform；
CPRI is sliced module, for continuous CPRI electric signal to be cut into regular length according to the length of system requirements
CPRI data slicer, and CPRI grouping packet is obtained plus the fixed frame head of RTP and control word on CPRI data slicer；
Ethernet frame package module is packaged into Ethernet for the CPRI to be grouped packet addition MPLS/VLAN mark
Frame；
Ethernet frame sending module, for the ethernet frame to be sent to egress packet equipment platform.
Based on the above technical solution, the egress packet equipment platform includes:
Ethernet frame receiving module, the ethernet frame sent for receiving the source packet equipment platform, and root
It is identified according to MPLS/VLAN and is forwarded the ethernet frame accordingly；
CPRI electric signal recombination module, for restoring CPRI data slicer from the ethernet frame received, using same
Step mode or differential timing mode carry out recombination and restore to obtain continuous CPRI electric signal, and CPRI electric signal is passed through accordingly
CPRI signal path is sent to corresponding user.
Based on the above technical solution, the format of the ethernet frame includes source address, destination address, TPID label
Protocol identifier+VLAN, ethernet frame type, Ethernet payload and Frame Check Sequence, wherein the Ethernet payload is by CPRI
The fixed frame head of data slicer, RTP and control word composition.
Based on the above technical solution, ethernet frame type is by label switched path or PW Label Stack, control
Word, the fixed frame head of RTP and CPRI data slicer composition processed.
Based on the above technical solution, the format of the fixed frame head of the RTP includes:
Version number V, filling bit P, extended bit X, effect source count bits CC, identification bit M, packet serial number are defined
Sequence Number, timestamp value Timestamp and synchronisation source SSRC.
Based on the above technical solution, the control word is made of following field: alarm indication bit, remote bug
Indication bit, reserved and segmentation bits, length field and assignment packet serial number.
A kind of method that packet equipment uploads CPRI interface, the specific steps are as follows:
The CPRI optical signal received is converted CPRI electric signal by S1, source packet equipment platform, by CPRI electric signal
It is cut into the CPRI data slicer of regular length, and obtains CPRI plus the fixed frame head of RTP and control word on CPRI data slicer
The CPRI is grouped packet addition MPLS/VLAN mark, is packaged into ethernet frame by grouping packet；
S2, egress packet equipment platform receive the ethernet frame that source packet equipment platform is sent, and from the Ethernet
CPRI data slicer is restored in frame, is carried out recombination and is restored to obtain continuous CPRI electric signal, and the CPRI electric signal is sent out
Give corresponding user.
Based on the above technical solution, in the S1, timing system of the clock as source packet equipment platform is extracted
System reference source.
Based on the above technical solution, in the S2:
Recombination is carried out using synchronous mode or differential timing mode according to timing system reference source to restore to obtain continuously
CPRI electric signal.
Compared with the prior art, the advantages of the present invention are as follows:
A kind of system transmitting CPRI interface on packet equipment of the invention, by CPRI in source packet equipment platform
Electric signal is cut into data slicer composition CPRI and is grouped packet, and CPRI is grouped in packet addition after mark, is packaged into ethernet frame；In
CPRI data slicer is restored from ethernet frame in egress packet equipment platform, and recombination is carried out to CPRI data slicer and is restored
It to continuous CPRI electric signal, and is identified according to MPLS/VLAN and CPRI electric signal is sent to corresponding user, expand PTN
The ability and application range of equipment, extend the life cycle of PTN device.
Detailed description of the invention
Fig. 1 is system block diagram of the invention；
Fig. 2 is flow chart of the method for the present invention；
Fig. 3 is the schematic diagram of too net frame format in the embodiment of the present invention；
Fig. 4 is the schematic diagram of the fixed frame head format of RTP in the embodiment of the present invention；
Fig. 5 is the schematic diagram of control word format in the embodiment of the present invention.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
Shown in Figure 1, the embodiment of the present invention provides a kind of system that CPRI interface is transmitted on packet equipment, including,
Source packet equipment platform and ethernet frame sending module, source packet equipment platform include: CPRI receiving module, are used for source
The end received CPRI optical signal of packet equipment platform is converted into CPRI electric signal, and extracts clock as source packet equipment platform
Timing system reference source；CPRI is sliced module, and the CPRI data for continuous CPRI electric signal to be cut into regular length are cut
The regular length that CPRI electric signal is cut into according to CPRI option grade is N*64 byte, such as CPRI in the present embodiment by piece
Option1/CPRI option2 corresponds to N=1, i.e. the regular length CPRI data slicer that is 64 bytes；For CPRI
Option3/CPRI option4, the CPRI data slicer that corresponding N=2, i.e. regular length are 128 bytes；For CPRI
Option5 or more rate, the CPRI data slicer that corresponding N=4, i.e. regular length are 256 bytes, adds on CPRI data slicer
The fixed frame head of upper RTP and control word obtain CPRI grouping packet；Ethernet frame package module, for CPRI to be grouped packet addition
MPLS/VLAN mark, is packaged into ethernet frame；Ethernet frame sending module is set for ethernet frame to be sent to egress grouping
Standby platform.Egress packet equipment platform recombinate extensive for restoring CPRI data slicer from the ethernet frame received
Continuous CPRI electric signal is regained, and gives CPRI electric signal to corresponding user by corresponding CPRI signal path.
Wherein, egress packet equipment platform includes: ethernet frame receiving module, for receiving source packet equipment platform hair
The ethernet frame sent, and identified according to MPLS/VLAN and accordingly forwarded ethernet frame；CPRI electric signal recombination module is used
In restoring CPRI data slicer from the ethernet frame received, recombinate using synchronous mode or differential timing mode extensive
Regain continuous CPRI electric signal.
Ginseng is shown in Table 1, and in the present embodiment, the format of ethernet frame includes source address, destination address, TPID label protocol
Identifier/VLAN, ethernet frame type Ethertype, Ethernet payload and Frame Check Sequence FCS, wherein Ethernet payload by
The fixed frame head of CPRI data slicer, RTP and control word composition.
Shown in Figure 3, ethernet frame type is by label switched path or PW Label Stack, control in the present embodiment
The fixed frame head of word, RTP and CPRI data slicer composition.Ethernet frame type value is expressed as 0x8847 using 16 systems.Wherein,
TPID tag protocol identifier value is expressed as 0x8100 using 16 systems；VLAN value and label switched path or PW Label
The channel number of Stack corresponds；Label switched path value is indicated using 16 systems, and each label switched path or PW
The channel number and CPRI signal path of Label Stack corresponds.
Table 1: the format of ethernet frame
Shown in Figure 4, in the present embodiment, the format of the fixed frame head of RTP includes version number V, filling bit P, definition expansion
Open up bit X, effect source count bits CC, identification bit M, packet serial number Sequence Numbe, timestamp value Timestamp and same
Step source SSRC, wherein version number V, it is necessary to be set as 2；Filling bit P, sender must be set as 0, and recipient must ignore this ratio
It is special；Extended bit X is defined, sender must be set as 0, and recipient must ignore this bit；Effect source count bits CC, sender
It must be set as 0, recipient must ignore this bit；Identification bit M, sender must be set as 0, and recipient must ignore this ratio
It is special；Packet serial number Sequence Number, every circulation for sending a CPRI grouping packet serial number from 0 to 0xFFFF are incremented by, opposite end
Packet loss is detected whether with this and the CPRI grouping packet rearrangement to receiving, the assignment packet in the value and control word of the packet serial number
The value of serial number is identical；Timestamp value Timestamp, for carrying timing information；Synchronisation source SSRC, for detecting incorrect link.
Shown in Figure 5, in the present embodiment, control word is by alarm indication bit L bit, remote bug indication bit R
Bit, reserved RSV and the field composition for being segmented FRG, length field Length and assignment packet serial number Sequence Number.Its
In, alarm indication bit L bit, L bit set indicates that the Ethernet payload in CPRI grouping packet is invalid, and butt end receives L
When bit is that the CPRI of " 1 " is grouped packet, complete " 1 " can be sent to the corresponding port TDM；Remote bug indication bit R bit, L bit
Set indicates that distal end receiving is lost；Reserved RSV and segmentation FRG, sender must be set as 0, and recipient must ignore this bit；
Length field Length then indicates the length of frame head if not 0；The RTP frame is added if having used RTP frame head
Head length and load length, and if the length total value be less than or equal to 64 byte when, length field must be set as actual value, no
Then it is set as 0；Assignment packet serial number Sequence Number, one CPRI grouping packet of every transmission is recycled from 0 to 0xFFFF to be incremented by, right
End can detect whether packet loss according to this and resequence to the packet received.
Referring to fig. 2, the method that the present embodiment provides a kind of transmits CPRI interface on packet equipment, the specific steps are as follows:
The CPRI optical signal received is converted CPRI electric signal by S1, source packet equipment platform；According to system requirements
CPRI electric signal is cut into the CPRI data slicer of regular length, and plus the fixed frame head of RTP and control on CPRI data slicer
Word processed obtains CPRI grouping packet；CPRI is grouped packet addition MPLS/VLAN mark, is packaged into ethernet frame；
Wherein, specific step is as follows by S1:
The received CPRI optical signal of source packet equipment platform is converted CPRI electric signal by S10, CPRI receiving module,
And extract timing system reference source of the clock as source packet equipment platform；
S11, CPRI are sliced module and continuous CPRI electric signal are cut into regular length according to the length of system requirements
CPRI data slicer, and CPRI grouping packet is obtained plus the fixed frame head of RTP and control word on CPRI data slicer；
CPRI is grouped packet addition MPLS/VLAN and identified by S12, ethernet frame package module, is packaged into ethernet frame；
The ethernet frame that ethernet frame package module encapsulates is sent to ethernet frame and connect by S13, ethernet frame sending module
Receive module；Wherein, the sending method of ethernet frame be unicast, multicast and broadcast, and the selection of the pass-through mode of ethernet frame by
Destination address determines；
S2, egress packet equipment platform receive the ethernet frame that source packet equipment platform is sent, and from ethernet frame
CPRI data slicer is restored, recombination is carried out and restores to obtain continuous CPRI electric signal, and CPRI electric signal is sent to accordingly
User；
Wherein, specific step is as follows by S2:
S20, ethernet frame receiving module receive the ethernet frame that source packet equipment platform is sent, and according to MPLS/
VLAN mark is accordingly forwarded ethernet frame；
CPRI electric signal recombination module restores CPRI data slicer from the ethernet frame received, according to timing system
Reference source carries out recombination using synchronous mode or differential timing mode and restores to obtain continuous CPRI electric signal, and by CPRI telecommunications
Number it is sent to corresponding user.
CPRI electric signal is cut into data slicer by source packet equipment platform and forms CPRI grouping packet, and by CPRI points
After identifying in group packet addition, it is packaged into ethernet frame；Egress packet equipment platform restores CPRI data slicer, and to CPRI number
It carries out recombination according to slice to restore to obtain continuous CPRI electric signal and be sent to corresponding user, in this manner by CPRI business
It can be applied to wireless forward pass network, expand the ability and application range of PTN device, extend the life cycle of PTN device.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of system for transmitting CPRI interface on packet equipment characterized by comprising
Source packet equipment platform, the CPRI optical signal for will receive are converted into CPRI electric signal, CPRI electric signal are cut
CPRI points are obtained plus the fixed frame head of RTP and control word at the CPRI data slicer of regular length, and on CPRI data slicer
Group packet；The CPRI is grouped packet addition VLAN mark, is packaged into ethernet frame；
Egress packet equipment platform is recombinated for restoring CPRI data slicer from the ethernet frame received
Recovery obtains continuous CPRI electric signal, and the CPRI electric signal is sent to corresponding user.
2. a kind of system for transmitting CPRI interface on packet equipment as described in claim 1, which is characterized in that the source
Packet equipment platform includes:
CPRI receiving module for converting CPRI electric signal for the received CPRI optical signal of source packet equipment platform, and mentions
Take clock as the timing system reference source of source packet equipment platform；
CPRI is sliced module, for continuous CPRI electric signal to be cut into the CPRI number of regular length according to the length of system requirements
CPRI grouping packet is obtained plus the fixed frame head of RTP and control word according to slice, and on CPRI data slicer；
Ethernet frame package module is packaged into ethernet frame for the CPRI to be grouped packet addition VLAN mark；
Ethernet frame sending module, for the ethernet frame to be sent to egress packet equipment platform.
3. a kind of system for transmitting CPRI interface on packet equipment as described in claim 1, which is characterized in that the egress
Packet equipment platform includes:
Ethernet frame receiving module, the ethernet frame sent for receiving the source packet equipment platform, and according to
VLAN mark is forwarded the ethernet frame accordingly；
CPRI electric signal recombination module, for restoring CPRI data slicer from the ethernet frame received, using synchronous mould
Formula or differential timing mode carry out recombination and restore to obtain continuous CPRI electric signal, and CPRI electric signal is passed through corresponding CPRI
Signal path is sent to corresponding user.
4. a kind of system for transmitting CPRI interface on packet equipment as described in claim 1, it is characterised in that:
The format of the ethernet frame includes source address, destination address, TPID tag protocol identifier+VLAN, ethernet frame class
Type, Ethernet payload and Frame Check Sequence, wherein the Ethernet payload is by CPRI data slicer, the fixed frame head of RTP and control
Word composition.
5. a kind of system for transmitting CPRI interface on packet equipment as claimed in claim 4, it is characterised in that: ethernet frame
Type is made of label switched path or the fixed frame head of PW Label Stack, control word, RTP and CPRI data slicer.
6. a kind of system for transmitting CPRI interface on packet equipment as described in claim 1, which is characterized in that the RTP
The format of fixed frame head includes:
Version number V, filling bit P, extended bit X, effect source count bits CC, identification bit M, packet serial number Sequence are defined
Number, timestamp value Timestamp and synchronisation source SSRC.
7. a kind of system for transmitting CPRI interface on packet equipment as described in claim 1, which is characterized in that the control
Word is made of following field: alarm indication bit, remote bug indication bit, reserved and segmentation bits, length field and assignment
Packet serial number.
8. a kind of method for transmitting CPRI interface on packet equipment, which is characterized in that specific step is as follows:
S1, source packet equipment platform convert CPRI electric signal for the CPRI optical signal received, CPRI electric signal are cut into
The CPRI data slicer of regular length, and CPRI grouping is obtained plus the fixed frame head of RTP and control word on CPRI data slicer
The CPRI is grouped packet addition VLAN mark, is packaged into ethernet frame by packet；
S2, egress packet equipment platform receive the ethernet frame that source packet equipment platform is sent, and from the ethernet frame
CPRI data slicer is restored, recombination is carried out and restores to obtain continuous CPRI electric signal, and the CPRI electric signal is sent to
Corresponding user.
9. a kind of method for transmitting CPRI interface on packet equipment as claimed in claim 8, it is characterised in that: the S1
In, extract timing system reference source of the clock as source packet equipment platform.
10. a kind of method for transmitting CPRI interface on packet equipment as claimed in claim 9, which is characterized in that the S2
In:
Recombination is carried out using synchronous mode or differential timing mode according to timing system reference source to restore to obtain continuous CPRI electricity
Signal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108026.1A CN106941448B (en) | 2017-02-27 | 2017-02-27 | A kind of system and method transmitting CPRI interface on packet equipment |
| PCT/CN2017/109842 WO2018153124A1 (en) | 2017-02-27 | 2017-11-08 | System and method for transmitting cpri interface on grouping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108026.1A CN106941448B (en) | 2017-02-27 | 2017-02-27 | A kind of system and method transmitting CPRI interface on packet equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106941448A CN106941448A (en) | 2017-07-11 |
| CN106941448B true CN106941448B (en) | 2019-11-12 |
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| CN201710108026.1A Active CN106941448B (en) | 2017-02-27 | 2017-02-27 | A kind of system and method transmitting CPRI interface on packet equipment |
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| Country | Link |
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| CN (1) | CN106941448B (en) |
| WO (1) | WO2018153124A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106941448B (en) * | 2017-02-27 | 2019-11-12 | 烽火通信科技股份有限公司 | A kind of system and method transmitting CPRI interface on packet equipment |
| US10320476B2 (en) * | 2017-10-27 | 2019-06-11 | Cisco Technology, Inc. | Transparent deployment of packet services using optical transport network |
| WO2025166617A1 (en) * | 2024-02-07 | 2025-08-14 | Nokia Shanghai Bell Co., Ltd. | Automatic ecpri rx packet position prediction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4611383B2 (en) * | 2004-07-13 | 2011-01-12 | ユーティー スダカン トンシュン ヨウシェンゴンス | Radio signal packet transmission method in radio base station system |
| CN102244887B (en) * | 2011-07-21 | 2014-02-19 | 北京北方烽火科技有限公司 | Evolved Node B (eNodeB) monitoring system and eNodeB monitoring method |
| CN104144529B (en) * | 2013-05-10 | 2017-11-21 | 中国移动通信集团公司 | A kind of remote radio unit (RRU), Base Band Unit and distributed base station |
| CN103354471B (en) * | 2013-07-18 | 2016-04-27 | 北京裕源大通科技有限公司 | Digital optical fiber direct station and method for transmitting signals thereof |
| JP6586736B2 (en) * | 2015-02-20 | 2019-10-09 | 富士通株式会社 | Control device, cooperative pattern selection method, and wireless communication system |
| WO2016168651A1 (en) * | 2015-04-16 | 2016-10-20 | Andrew Wireless Systems Gmbh | Uplink signal combiners for mobile radio signal distribution systems using ethernet data networks |
| CN106162860B (en) * | 2015-04-27 | 2020-01-03 | 华为技术有限公司 | Time synchronization method and system, and network device |
| CN106211306B (en) * | 2015-04-30 | 2020-04-03 | 华为技术有限公司 | A communication network delay jitter smoothing method, device and system |
| CN105634647B (en) * | 2016-01-07 | 2018-01-02 | 烽火通信科技股份有限公司 | Realize the method and system of PTN device platform forward compatibility MSTP equipment |
| CN106941448B (en) * | 2017-02-27 | 2019-11-12 | 烽火通信科技股份有限公司 | A kind of system and method transmitting CPRI interface on packet equipment |
-
2017
- 2017-02-27 CN CN201710108026.1A patent/CN106941448B/en active Active
- 2017-11-08 WO PCT/CN2017/109842 patent/WO2018153124A1/en not_active Ceased
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| Publication number | Publication date |
|---|---|
| CN106941448A (en) | 2017-07-11 |
| WO2018153124A1 (en) | 2018-08-30 |
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