CN101227338B - Time stamp offset in data packet bundling - Google Patents

Time stamp offset in data packet bundling Download PDF

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Publication number
CN101227338B
CN101227338B CN2006100730226A CN200610073022A CN101227338B CN 101227338 B CN101227338 B CN 101227338B CN 2006100730226 A CN2006100730226 A CN 2006100730226A CN 200610073022 A CN200610073022 A CN 200610073022A CN 101227338 B CN101227338 B CN 101227338B
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time
signal element
cyclic buffer
time stamp
overall distribution
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CN2006100730226A
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CN101227338A (en
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小罗伯特·S·盖门塞勒
布赖恩·塔特姆
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Alcatel CIT SA
Alcatel Lucent SAS
Alcatel Lucent NV
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Alcatel NV
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Priority claimed from US11/315,544 external-priority patent/US8228956B2/en
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Abstract

A system, method, and computer readable medium for time stamp offset in data packet bundling including filling a globally distributed time stamp based upon a globally distributed time, receiving a signal unit, resolving a difference in time between the globally distributed time stamp and the reception of the signal unit and assigning a time offset based upon the resolved time difference.

Description

Time stamp offset in the data packet bundling
The cross reference of related application
The temporary patent application No.60/672 that is entitled as " time stamp offset in the data packet bundling " (TIME STAMP OFFSET IN DATA PACKET BUNDLING) that present patent application relates on April 19th, 2005 to be submitted to, the temporary patent application No.60/672 that is entitled as " utilizing parallel hardware logic to carry out the controlled data tapping device of context of link monitoring " (CONTEXT-CONTROLLED DATA TAP UTILIZING PARALLELHARDWARE LOGIC FOR LINK MONITORING) that on April 19th, 795 and 2005 submitted to, 796, and requirement comprises its full content based on the priority of these two patent applications in this mode by reference.
The invention still further relates on the same day the file that is entitled as " utilizing parallel logic to carry out the controlled data tapping device of context of link monitoring " (CONTEXT-CONTROLLED DATA TAPUTILIZING PARALLEL LOGIC FOR LINK MONITORING) submitted to number U.S. Patent application, comprise its full content in this mode by reference for the common transfer of No.139402PSP.
Technical field
Relate generally to of the present invention is synchronized to overall distribution time (globally distributed time) with packet bundle (data packet bundle), and relates more particularly to the time stamp offset in the data packet bundling.
Background technology
At present, integrated link monitor (ILM) provides the interactive mode connection of signal server to data capture system, so that the monitoring message business.Messaging service comprises ILM packet bundle included in the part of each signal element, respectively these signal elements is put on overall distribution time, with to being undertaken synchronously by a plurality of signal elements of monitoring entity that are subjected to.This application (revenue generating application) that the utilization of range request processor can be used to produce income of crossing of each signal element being put on overall distribution time.
Therefore, need make each ILM packet bundle have an overall distribution time stamp, and put on time migration for each signal element, this time migration is represented overall distribution time and signal element is write time difference between time of cyclic buffer.
Summary of the invention
Integrated link monitor (ILM) is used for the signal server interactively is connected to data capture system, so that the monitoring message business.This signal server can be No.7 signalling system (SS7), such as Alcatel overall situation signal server (SSG).The present invention can put on time migration for each signal element, and this time migration is represented overall distribution time and signal element write time difference between time of cyclic buffer.ILM packet bundle comprises the 2nd layer of information, such as sequence information and error detection information.
In one embodiment, a kind of method that is used for the time stamp offset of data packet bundling comprises: fill overall distribution time stamp based on overall distribution time; The received signal unit; Resolve overall distribution time stamp and receive time difference between time of each signal element that receives; Based on each fixed time time difference of resolving skew; And provide ILM packet bundle, this ILM packet bundle to comprise binding expense, this overall situation distribution time stamp, this signal element and be used for the time migration mark of each signal element.
In another embodiment, a kind of method that is used for the time stamp offset of data packet bundling comprises: fill overall distribution time stamp based on overall distribution time; The received signal unit; Resolve overall distribution time stamp and receive time difference between time of signal element; From signal element, extract the 2nd layer of information; Carry out the 2nd layer function, such as ordering and error detection; Signal element is copied to direct memory access (DMA) controlled function structure; Based on the fixed time time difference skew of being resolved; Specify the binding expense be associated with signal element, this binding expense comprises decoded information, bundle with releasing and the relevant information in source of signal element; The integrated link monitor packet that comprises overall distribution time, signal element, time migration and binding expense is bundled; The situation that takies that recharges part of cyclic buffer is sent to integrated link monitor from primary processor; For the part that recharges of cyclic buffer loads the signal element received and specified time migration; To in the recharging part and load of cyclic buffer or be independent of the loading that recharges part to cyclic buffer, in real time or near real-time the release portion with cyclic buffer is discharged into primary processor; The situation that takies of the release portion of cyclic buffer is sent to integrated link monitor; On primary processor, receive the notice of " part that recharges of cyclic buffer is full of "; And the release portion of exchange cycles buffer and cyclic buffer recharge the part functional.
In yet another embodiment, a kind of system that is used to carry out the inventive method has the link cards module.Wherein this link cards module comprises: integrated link monitor, and it is suitable for coming received signal unit and overall distribution time stamp based on overall distribution time; And timer, it is connected to this integrated link monitor, and this timer is suitable for resolving the time that receives signal element and the time difference between the overall distribution time stamp.
In yet another embodiment, a kind of equipment that is used for the time stamp offset of data packet bundling comprises: the device that is used for filling based on overall distribution time overall distribution time stamp; The received signal unit; The device of time difference between the time that is used to resolve overall distribution time stamp and receive each signal element that receives; The device that fixed time time difference that is used for resolving based on each is offset; And the device that is used to provide ILM packet bundle, this ILM packet bundle comprises binding expense, this overall situation distribution time stamp, this signal element and is used for the time migration mark of each signal element.
Description of drawings
Fig. 1 shows SS7 system according to the preferred embodiment of the invention;
Fig. 2 shows the SS7 system that is connected to data capture system according to the preferred embodiment of the invention;
Fig. 3 shows the SS7 system that is connected to server according to the preferred embodiment of the invention;
Fig. 4 shows integrated according to the preferred embodiment of the invention link monitor;
Fig. 5 shows the packet bundle and the primary processor of integrated according to the preferred embodiment of the invention link monitor, integrated link monitor; And
Fig. 6 shows the flow chart of the time stamp offset that is used for data packet bundling according to the preferred embodiment of the invention.
Embodiment
With reference now to Fig. 1,, wherein show Signaling System Number 7 (SS7) system 10, SS7 link cards 12 comprises digital signaling zero level (DS-0) link cards 14 and ATM(Asynchronous Transfer Mode) T-1 link cards 16.This system can comprise: in the T-1 or the message transfer part on the E-1 2 (MTP-2) link cards of channelizing or not channelizing; Be connected to the stream control transmission protocol (sctp) link cards of the transmission of messages network 18 such as Ethernet or any one link cards in the various digital chain an outpost of the tax office, these link cards can communicate with data capture system by Local Area Network circuit 20 or the wireless connections 22 that comprise a plurality of functional blocks or module.These functional blocks or module are the combinations of software, hardware, firmware and/or software, hardware and/or firmware.SS7 link cards 12 provides parallel processing for integrated link monitor (ILM).Integrated link monitor is used for signal server (SS7 system) interactively is connected to data capture system, so that monitoring SS7 messaging service.Information between transmission of messages network 18 and the data capture system transmits carries out via at least a agreement in the combination of wireless protocols, limited agreement and wireless protocols and limited agreement.
The present invention can put on time migration for each signal element in one group of independent signal element (SU), the overall distribution time of this time migration representative such as NTP (Network Time Protocol) (NTP) and the time difference that signal element is write between the local zone time that recharges part that is associated with cyclic buffer.ILM extracts data from transmission link and the reception link of being monitored.These data of being monitored are with necessary relevant in time from the data on the whole global network.Use overall distribution time distribution time information globally on whole network.Then, must overall situation distribution time be inserted into and be subjected in the monitor data, so that the pilot signal unit that respectively is subjected on the whole global network has temporal correlation.
ILM receives overall distribution time, and fills the overall situation distribution time stamp of ILM packet bundle.The bag that primary processor and ILM are monitored by the cyclic buffer exchange.By ILM the ILM packet being got one's things ready is fitted on the recharging in the part of cyclic buffer, and the release portion of cyclic buffer discharged to primary processor, so that carry out Network Transmission.Then, when primary processor transmits the release portion of cyclic buffer or be independent of the transmission of primary processor to the release portion of cyclic buffer, ILM begins to fill in real time or near real-time the part that recharges of cyclic buffer.In order to resolve the difference between the local zone time that overall distribution time and ILM trace into, developed the timer algorithm, with based on to the releasing operation of cyclic buffer with recharge operation and come tracking time.
When recharging of cyclic buffer partly is sent to ILM, will bundlees expense and put on overall distribution time.In real time or near real-time, side by side or independently, to the availability that recharges part of ILM notice cyclic buffer.ILM begins to upgrade the time migration of the release portion of this cyclic buffer.When adding each signal element to cyclic buffer, time migration is inserted in the binding data flow together with the signal element of being monitored.Then, by the overall distribution time addition that will be provided in the time migration of signal element and the binding expense, data capture system can calculate the overall distribution time of each signal element.
ILM carries out virtual tap to realize the calibration of a series of signal unit to sending data link and receiving data link.The signal element of calibration is copied to direct memory access (DMA) (DMA) controlled function structure, so that ILM packet bundle is assembled in recharging of the cyclic buffer in main storage in the part.The controlled layer 2 state machine of context extracts the 2nd layer of information, and carries out layer 2 feature, such as ordering and error detection.Load the context of the link that is associated based on the availability of link input.Input comprises from the controlling links of the primary processor that is used as controlled entity and generates the request that sends data or handle the request that receives data.Input is applied to the layer 2 state machine, and this layer 2 state machine utilizes current input and has loaded the output that contextual state produces NextState and is associated.Processing real-time or near real time is carried out in the input that is associated.Integrated link monitoring function structure provides the parallel logic path, sends ILM packet bundle and receives ILM packet bundle to duplicate.Utilization is to the observation of the state of current context, at institute's copy data inhibit signal sing1e unit calibration.The direct memory access (DMA) functional structure is collected the signal element of duplicating that is provided from each context of layer 2 state machine, and generate data are decoded and removed binding, identification data source, data from given source are sorted, and put on time stamp so that make a plurality of monitoring entities that are subjected to have the required binding expense of correlation for data.
Be used for providing the system of time stamp offset to have the link cards module at data packet bundling, this link cards module can comprise DS-0 link cards and ATM/T1 link cards, in the T-1 or 2 link cards of the message transfer part on the E-1 of channelizing or not channelizing, any one link cards in SCTP link cards or the various digital chain an outpost of the tax office.This link cards module has: integrated link monitor, and it is suitable for coming received signal unit and overall distribution time stamp based on overall distribution time; And timer, it is connected to this integrated link monitor.This timer is suitable for resolving the time that receives signal element and the time difference between the overall distribution time stamp.This integrated link monitor is parallel to primary processor and executable operations.The transmission of messages network is suitable for transmission information between link cards module and data capture system, and this information transmits carries out via at least a agreement in the combination of wireless protocols, limited agreement and wireless protocols and limited agreement.Management processor is suitable for transmission information between at least one transmission of messages network and data capture system.
With reference now to Fig. 2,, SS7 system 32 is connected to the data capture system 34 that comprises a plurality of functional blocks or module.These functional blocks or module are the combinations of software, hardware, firmware and/or software, hardware and/or firmware.There is shown SS7 link cards 36, comprise DS-0 link 38, ATM/T-1 link 40 and SS7IP (Internet protocol) link 42, SS7IP link 42 is connected to the transmission of messages network, such as Ethernet 44A and Ethernet 44B.Link cards can be included in any one link cards in the T-1 of channelizing or not channelizing or 2 link cards of the message transfer part on the E-1, SCTP link cards or the various digital chain an outpost of the tax office.Management processor 54A and management processor 54B are connected to transmission of messages network 44A and transmission of messages network 44B, and transmission of messages network 44A and transmission of messages network 44B can communicate via local area network (LAN) 52 and data capture system 34.Management processor is responsible for transmission Link State, link configuration and the system mode of data capture system 34.Functional block in the SS7 system 32 is carried out similar to its corresponding functional block in the SS7 system 10 functional.Transmission of messages network 44A and transmission of messages network 44B are connected to management processor 54A and management processor 54B.Receive overall distribution time information by website LAN52.Management processor 54A and management processor 54B utilize the overall distribution time that is provided by first server 50 to carry out time synchronized.Hub 46 connects (45) to transmission of messages network 44A and transmission of messages network 44B, and hub 46 is also connected to network processing unit 48.
With reference now to Fig. 3,, wherein the SS7 system is depicted as and is connected to first server, 50, the first servers 50 and then is connected to the second server 62 that comprises a plurality of functional blocks or module.These functional blocks or module are the combinations of software, hardware, firmware and/or software, hardware and/or firmware.SS7 system 32 is connected to the transmission of messages network by link 64,66,70 and 74.One group of monitoring link 68 and 72 provides virtual tap to extract the 2nd layer of information of reception that the 2nd layer of information of transmission and data capture system will receive.
With reference now to Fig. 4,, wherein shows the ILM packet bundle 84 that comprises a plurality of functional blocks or module.These functional blocks or module are the combinations of software, hardware, firmware and/or software, hardware and/or firmware.ILM packet bundle 84 comprises binding expense 88, overall distribution time stamp 92, signal element 96 and time migration mark 94.Time migration mark 94 representative is at the overall distribution time of the beginning time institute mark that recharges of ILM packet bundle and each signal element is write time difference between the local zone time of ILM packet bundle.Primary processor 82 sends overall distribution time 90 to mark overall distribution time stamp 92 when beginning to assemble ILM packet bundle.Overall situation distribution time 90 claims complete overall distribution time again, and overall distribution time stamp 92 claims overall distribution time stamp again.The binding expense 88 of adding ILM packet bundle to comprises the 2nd layer of information that is used to sort with error detection.Monitoring function structure 86 based on time migration 106,108 and 110 to ILM packet Shu Tianjia time migration mark 94,98 and 102.The order of time migration mark and signal element can change.The context of signal element is write the binding expense.
With reference now to Fig. 5,, will be described in primary processor 82 below and comprise release portion 84A that transmits ILM packet bundle between the monitoring function structure 86 of a plurality of functional blocks or module and the process that recharges part 84B.These functional blocks or module are the combinations of software, hardware, firmware and/or software, hardware and/or firmware.Primary processor 82 fills the overall situation time stamp A that distributes with (1) to being assemblied in the recharging among the ILM packet bundle 84A in the part of cyclic buffer.Primary processor 82 in real time or near real-time side by side or independently will transmit (2) to monitoring function structure 86 to the situation that takies that recharges part of cyclic buffer.After will arriving the monitoring function structure to the situation that the takies transmission (6) that recharges part of cyclic buffer, the inquiry timer, and ILM begins to utilize the direct memory access (DMA) controlled function structure that is used for institute reproducing signals unit, fills (3) with received signal unit and time migration mark and recharges part 84B.ILM resolve overall distribution time stamp and with signal element write cyclic buffer recharge the part local zone time between time difference.The time migration of ILM specification signal unit.ILM extracts the 2nd layer data that is associated with signal element.The release portion 84A of cyclic buffer is discharged (4) to primary processor 82, and the part 84B that recharges of cyclic buffer is taken by ILM.The binding expense is specified by ILM and is comprised decoded information, bundlees and the relevant information in source of signal element with removing.The packet that comprises overall distribution time, signal element, time migration and binding expense is bundled.For the part that recharges of cyclic buffer loads the signal element received, specified time migration and binding expense.After the information in the release portion of cyclic buffer is sent to primary processor, the situation that takies of the release portion of cyclic buffer is transmitted (5) to monitoring function structure 86.To in the recharging part and load of cyclic buffer or be independent of loading to the release portion of cyclic buffer, in real time or near real-time the release portion with cyclic buffer discharges to primary processor.Primary processor 82 receives (6) in order to inform the notice of this primary processor " part that recharges of cyclic buffer is full of " from monitoring function structure 86.Receive (7) from primary processor 82 and recharge the data of part to data capture system from cyclic buffer.At this moment, cyclic buffer recharges part and the release portion of cyclic buffer in real time or near real-time, switch functionality side by side or independently.
With reference now to Fig. 6,, the method 120 that is used for the time stamp offset of data packet bundling comprises: fill overall distribution time stamp (step 122); Received signal unit (step 124); Resolve overall distribution time stamp and receive time difference (step 126) between time of signal element.Signal element is copied to direct memory access (DMA) controlled function structure (step 128).Based on the skew of fixed time time difference between the overall situation distribution time stamp of being resolved and time of receiving signal element (step 130).Specify the binding expense be associated with signal element, wherein bundle expense and comprise decoded information and bundle and the relevant information in source of signal element with removing.The integrated link monitor packet that comprises overall distribution time, signal element, time migration and binding expense is bundled (step 132).For the part that recharges of cyclic buffer loads the signal element received and specified time migration (step 134).The situation that takies that recharges part of cyclic buffer is sent to integrated link monitor (step 136) from primary processor.To in the recharging part and load of cyclic buffer or be independent of loading to the release portion of cyclic buffer, in real time or near real-time the release portion with cyclic buffer discharges to primary processor (step 138).The situation that takies of the release portion of cyclic buffer is sent to integrated link monitor (step 140).On primary processor, receive the notice (step 142) of " part that recharges of cyclic buffer is full of ", and functional (step 144) that recharge part of the release portion of exchange cycles buffer and cyclic buffer.
Although the exemplary embodiment of system of the present invention has been illustrated in the accompanying drawings and be described in above detailed description, but be to be understood that, the present invention is confined to the disclosed embodiments, but can carry out multiplely rearranging, revising and substitute under the situation that does not depart from the essence of the present invention of being illustrated and being limited by following claim.For example, function of the present invention can fully and/or partly be carried out by one or more management processors, first server or network processor module.Equally, these functions can be carried out on can any apparatus of tracking time or via these equipment in current mode or in distributed mode.In addition, although be described, under the situation that does not depart from the scope of the invention, can reorientate each functional block with ad hoc fashion.For example, management processor can be integrated in the SS7 link cards.In addition, although be described, can adopt more or less SS7 link cards, management processor, transmission of messages network, integrated link monitor, hub, network processing unit, local area network (LAN) or first server with ad hoc fashion.
In addition, can adopt in the present invention still less or more ILM packet bundle, and these ILM packet bundles can comprise side information, so as to realize the present invention, for the invention provides supplementary features, and/or make the present invention more effective.

Claims (5)

1. method that is used for the time stamp offset of data packet bundling comprises:
Fill overall distribution time stamp based on overall distribution time;
The received signal unit;
Resolve described overall distribution time stamp and receive time difference between time of each signal element that receives;
Based on each fixed time time difference of resolving skew; And
Integrated link monitor ILM packet bundle is provided, and described ILM packet bundle comprises binding expense, described overall distribution time stamp, described signal element and is used for the time migration mark of each signal element, wherein provides ILM packet bundle to comprise:
For the part that recharges of cyclic buffer loads the signal element received, specified time migration and described overall distribution time stamp;
When described cyclic buffer described being recharged part and loading, the release portion of described cyclic buffer is discharged to primary processor;
With described recharge the part the situation that takies and the situation that takies of described release portion be sent to integrated link monitor from primary processor, wherein said primary processor and described integrated link monitor are suitable for communicating via described cyclic buffer;
On described primary processor, receive the notice of " part that recharges of cyclic buffer is full of "; And
Exchange described the functional of part and described release portion that recharge.
2. method according to claim 1 comprises abstraction sequence information and error detection information from described signal element.
3. method according to claim 1, wherein said binding expense comprise decoded information, bundle relevant information and the information relevant with the source of described signal element with releasing.
4. method according to claim 1 comprises described signal element is copied to direct memory access (DMA) controlled function structure.
5. equipment that is used for the time stamp offset of data packet bundling comprises:
Be used for filling the device of overall distribution time stamp based on overall distribution time;
The device that is used for the received signal unit;
The device of time difference between the time that is used to resolve described overall distribution time stamp and receive each signal element that receives;
The device that fixed time time difference that is used for resolving based on each is offset; And
Be used to provide the device of integrated link monitor ILM packet bundle, described ILM packet bundle comprises binding expense, described overall distribution time stamp, described signal element and is used for the time migration mark of each signal element, wherein saidly is used to provide the device of ILM packet bundle to comprise:
Be used to the part that recharges of cyclic buffer to load the signal element received, specified time migration and the device of described overall distribution time stamp;
Be used for when described cyclic buffer described being recharged part and loading, the release portion of described cyclic buffer is discharged device to primary processor;
Be used for the described situation that takies that recharges part and the situation that takies of described release portion are sent to the device of integrated link monitor from primary processor, wherein said primary processor and described integrated link monitor are suitable for communicating via described cyclic buffer;
The device that is used for the notice of reception on described primary processor " part that recharges of cyclic buffer is full of "; And
Be used to exchange the described functional device that recharges part and described release portion.
CN2006100730226A 2005-12-22 2006-04-10 Time stamp offset in data packet bundling Expired - Fee Related CN101227338B (en)

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US11/315,544 2005-12-22
US11/315,544 US8228956B2 (en) 2005-04-19 2005-12-22 Time stamp offset in data packet bundling

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1373945A (en) * 1999-09-08 2002-10-09 诺基亚公司 Freqency synchronization of base station
CN1547385A (en) * 2003-12-11 2004-11-17 梁坚平 Digital camera having dual storage and dual lens
CN1574983A (en) * 2003-06-14 2005-02-02 安捷伦科技有限公司 Service usage records for mobile data communications
CN1688893A (en) * 2002-09-05 2005-10-26 高通股份有限公司 Position computation in a positioning system using synchronization time bias

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1373945A (en) * 1999-09-08 2002-10-09 诺基亚公司 Freqency synchronization of base station
CN1688893A (en) * 2002-09-05 2005-10-26 高通股份有限公司 Position computation in a positioning system using synchronization time bias
CN1574983A (en) * 2003-06-14 2005-02-02 安捷伦科技有限公司 Service usage records for mobile data communications
CN1547385A (en) * 2003-12-11 2004-11-17 梁坚平 Digital camera having dual storage and dual lens

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