CN1345499A - Discarding traffic in IP networks to optimize the quality of speech signals - Google Patents

Discarding traffic in IP networks to optimize the quality of speech signals Download PDF

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Publication number
CN1345499A
CN1345499A CN00805325.1A CN00805325A CN1345499A CN 1345499 A CN1345499 A CN 1345499A CN 00805325 A CN00805325 A CN 00805325A CN 1345499 A CN1345499 A CN 1345499A
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China
Prior art keywords
communication link
network communication
abandon
parameter
group
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Pending
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CN00805325.1A
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Chinese (zh)
Inventor
L·维斯特贝里
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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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Publication of CN1345499A publication Critical patent/CN1345499A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/64—Hybrid switching systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/11—Identifying congestion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2416—Real-time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/04—Protocols for data compression, e.g. ROHC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/161—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/163—In-band adaptation of TCP data exchange; In-band control procedures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]

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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)

Abstract

A method for discarding data within an IP-network communications link (10) in a manner that optimizes the quality of speech data contained in the IP-network communications link (10). Initially, the IP-network communications link (10) is monitored to determine the occurrence of an overload condition. At least a portion of a plurality of data packets (30) within the IP-network communications link (10) are selected in response to detection of the overload condition. The selected portions are discarded from the IP-network communications link (10), and the remainder of the packets (30) transmitted on the link (10).

Description

Discarding traffic is to optimize the quality of voice signal in IP network
Technical field
The present invention relates to the overload situation in the IP network communication link, relate in particular to the method for the overload situation in the IP network communication link that alleviates in the mode of optimizing the quality of voice signal in the communication link.
Background technology
As shown in Figure 1, in honeycomb Access Network 10, signal is by air interface part 15 and 20 transmission of IP transmission network.This IP transmission network 20 utilizes the IP network communication link by network 20 mobile datas.In honeycomb Access Network 10, the consideration of voice quality is because the reduction of the signal quality (QOS) that takes place in the interface 15 aloft basically.When aloft the reduction of the QOS of interface 15 is compared, the reduction of the QOS in the IP transmission network 20 must be insignificant or quality of speech signal becomes unacceptable.
The main signal reduction problem that occurs in the IP network communication link of IP transmission network 20 occurs in the certain overload situation that needs IP transmission network discarding traffic.This relates to the packet that abandons from IP transport network communication link.This overload situation can be reselected routing activity by link failure in the IP transmission network 20 or other and cause.In many cases, for example under the multiplexed situation of statistics, the overload situation can only be temporary transient.Yet under all these situations, this excessive business must be dropped by this way to avoid the reduction of quality of speech signal.
The technical problem that the present invention solves
The problem of existing IP-based network results from uses their optimised facts for the optimum efficiency of the resultant signal quality that obtains to offer the best.The quality of signal structure is optimised in a similar manner.Though the quality of sort signal structure may be appropriate to overall signal, the unnecessary suitable voice quality viewpoint of this system.Current methods is optimised in the flow-control mechanism of Transmission Control Protocol, and router will abandon Packet Service with random fashion like this, and the system that makes can not give the special preferential fair mode of any grouping or relevant connection to abandon grouping randomly and controls business.Though this may be acceptable for whole communication performance, this can have harmful effect to quality of speech signal.
By abandoning grouping, on whole quality of speech signal, can introduce bad performance with random fashion.Like this, if one or several voice signal causes the situation of overflowing and starts the business in 100 other real time information streams that constitute with many packets of voice that abandons that the gross mass of all users on these 100 real time information streams may be reduced to the thresholding accepted that is lower than high-quality audio signals.The result's of restriction overload situation certain methods needs on whole quality of speech signal.
The present invention abandons data and has overcome above-mentioned and other problem to optimize the speech data method for quality in the IP network communication link with a kind of.Monitor the overload situation that the IP network communication link occurs on this link.Respond detected overload situation, be chosen in data set specific in the IP network communication link.In first embodiment, the grouping Payload of the packet in the communication link is divided into important parameter and time important parameter.Select and abandon the inferior important parameter of a plurality of packets in the IP network communication link.
In a second embodiment, selection be called as real time information fail to be convened for lack of a quorum words the selection group packet and from the IP network communication link, leave out, this real time information fails to be convened for lack of a quorum to talk about and comprises the packet with identical source and destination IP address and source and destination port, and is made up of signals such as the video that encapsulates, audio frequency.By this way, only single or several words that fail to be convened for lack of a quorum in real time need be removed from this link, and remaining link remains unaffected.
Brief description:
For a more complete understanding of the present invention, with reference to detailed description, wherein below in conjunction with accompanying drawing:
Fig. 1 is the block diagram of explanation honeycomb Access Network;
Fig. 2 is the block diagram of explanation through the data packet transmission of IP network communication link;
Fig. 3 has illustrated first embodiment of the invention, leaves out in the packet of the part of wherein a plurality of grouping Payloads from the IP network communication link;
Fig. 4 is the block diagram of the method for key diagram 3;
Fig. 5 has illustrated alternate embodiments of the present invention, wherein leaves out from the IP network communication link from the packet of single real time information stream; With
Fig. 6 is the flow chart of the method for key diagram 5.
Specific embodiment
Referring now to accompanying drawing,, the single ip network communication link 25 on IP transmission network 20 (Fig. 1) is described especially with reference to Fig. 2.At communication link 25 are a plurality of packets 30 that comprise packet header 35 and Payload information 40, and packet header 35 comprises makes packet 30 through IP network communication link 25 information transmitted.Payload 40 is included between the source and destination address through IP network communication link 25 information transmitted.
Packet header 35 comprises fixed numeric values parameter 45 and unfixed numerical parameter 50.The fixed numeric values parameter does not often change during calling out, and only needs to send several times during calling out.Unfixed numerical parameter 50 during calling out frequent variations, be encoded and always the compression title in transmit.Thisly only transmit during calling out several times that the method for fixed numbers is called header compression.This is to comprise a record 55 by each end at IP network communication link 25 to finish, and this record comprises the preset parameter 45 that is not transmitted.From the source address to the destination address, flow to journey in real time and make a record.
Referring now to Fig. 3, the first embodiment of the present invention is described, wherein detected overload situation can alleviate on IP network link 25, and does not reduce the quality of speech signal (that is, the voice signal of awaring at receiving terminal is not by this way seriously reduced) of communication link 25.When the traffic carrying capacity that occurs on the communication link (being packet) during more than treatable traffic carrying capacity, the overload situation has taken place.During the overload situation, the classification that a plurality of packets 30 on the IP network communication link 25 have them is with the important parameter 70 determining to contain in each packet 30 and the grouping Payload 40 of time important parameter 75.The appointment of important and inferior important parameter generally before the packing data or during be performed.From each packet 30, select and abandon each by the local router in the IP network and be surrounded by the inferior important parameter 75 of imitating in the load 40, like this, whole packet 30 becomes the packet 30a of the brachymemma of the important parameter 70 that only comprises data payload 40 and packet header 35.Each packet 30 is transmitted as grouping 30a rather than the original whole group that provides 30 brachymemma or part by this way.No matter the situation that time important parameter is left out, the quality of the voice signal in the IP network communication link 25 is maintained at a high level.Be divided into important parameter and time important parameter generally by the execution of signal processing agreement, but can use other to distinguish the method for parameter order of priority.
Referring now to Fig. 4, the flow chart of the method for key diagram 3.In step 80, monitor the generation of these IP network communication link 25 overload situations.As discussed above, when detecting the overload situation, the important and inferior important parameter of the grouping Payload 40 in step 85 flag data grouping 30.From a plurality of packets 30, select time important parameter in step 90, and abandon the minor parameter of this selection in step 95.In optional step, also can carry out header compression at step 100 packet header, transmit through IP network communication link 25 at the grouping 30a of step 105 brachymemma.
In optional embodiment, many packets 30 can wholely from IP network communication link 25 be left out, rather than the grouping of the part in many packets 30 Payload 40 is left out.In this embodiment, by the local router of IP network, by reading the information that comprises in the packet header 35, each the 30 associated real-time process information flow that divide into groups in the decision IP network communication link 25.A real-time process information flow comprises a plurality of packets with identical source and destination IP address and identical sources and destination interface.Real-time process stream also can comprise multiplexing before from a part of multiplexed data flow in individual traffic source.Each packet 30 with this same information is considered to from same real-time process information flow.
Single ip network communication link 25 can have relative a plurality of real time information stream, as among Fig. 3 with shown in label 30a, 30b and the 30c.From the viewpoint of quality of speech signal, preferably lose single stream of information in the real time information stream, as 30b, rather than from each real time information stream, lose packet.Like this, by losing the real-time stream of representing with mark 30b, this IP network communication link 25 can be transformed to the real-time stream of 30a shown in only comprising and 30c.All lose though flow the signal of 30b in real time, the signal quality of stream 30a and 30c will remain unaffected in real time.Which real-time stream decision abandons and can determine randomly or based on many methods.These methods comprise but are not defined as based on the above-mentioned order of priority in the packet header loses packet; Distribute some addresses to have higher priority; Make control signal dynamically select to want deleted parameter; Priority is provided for specific bearing protocol; Perhaps from the real-time stream of nearest connection, abandon.
Referring now to Fig. 6,, the flow chart of describing the method for Fig. 5 has been described here.Monitor the generation of IP network communication link 25 overload situations in step 120.When detecting the overload situation, determine at present determining of the real-time stream supported by IP network communication link 25 in step 125.After determining at least one real time information stream, in step 130, select single real time information stream, and abandon this real-time stream of selecting of IP network communication link 25 in step 135 by the router of IP network.Can carry out the optional step that packet header compresses in the packet 30 of step 140 pair remainder, and transmit remaining grouping through the IP network communication link in step 145.
Though the preferred embodiment of method and apparatus of the present invention has illustrated in the accompanying drawings and has described in aforementioned detailed description part, but be to be understood that, the present invention is not limited to disclosed embodiment, and can carry out manyly rearranging, revising and replace, and do not break away from the spirit of the invention that proposes and limit by following claim.

Claims (15)

1, a kind of method that abandons data in the IP network communication link in the mode of the quality of optimizing the speech data on the IP network communication link comprises step:
Monitor the appearance of IP network communication link overload situation;
Response overload situation, at least a portion of a plurality of packets of selection IP network communication link is wherein left out at least one packet of selecting described in many packets and will can not reduced the quality of the voice signal on this link in fact; With
Abandon the selection part in a plurality of packets of from the IP network communication link, selecting.
2, select step further to comprise step according to the process of claim 1 wherein:
The Payload that will divide into groups is divided into first group of parameter and second group of parameter; With
Response overload situation is selected second group of parameter.
3,, wherein abandon step and comprise and abandon second group of parameter from the grouping Payload of IP network communication link, selecting according to the method for claim 2.
4. according to the method for claim 2, wherein abandon the parameter of selecting and do not reduce the voice signal that the listener feels at IP network communication link receiving terminal in essence.
5. according to the method for claim 2, each the end storage that further is included in the IP network communication link comprises the step of the record of second group of parameter.
6. select step further to comprise step according to the process of claim 1 wherein:
Determine on the IP network communication link at least one real time information words that fail to be convened for lack of a quorum;
Response overload situation is selected at least one definite real time information words that fail to be convened for lack of a quorum.
7. according to the method for claim 6, wherein abandon step and further comprise and abandon the fail to be convened for lack of a quorum step of words of the real time information of selecting from the IP network communication link.
8. according to the method for claim 6, wherein real time information fails to be convened for lack of a quorum to talk about and comprises one group of packet with identical source and destination IP address and source and destination port.
9. according to the method for claim 1, further be included in the step of compressed packet title on the IP network communication link.
10. method that abandons data in the IP network communication link in the mode of optimizing the quality of speech data on the IP network communication link comprises step:
Monitor the appearance of IP network communication link overload situation;
The Payload that will divide into groups is divided into important parameter group and time important parameter group;
Response overload situation is selected time important parameter group; With
Abandon the inferior important parameter group in a plurality of packets of IP network communication link.
11., further be included in the step of compressed packet title on the IP network communication link according to the method for claim 10.
12., wherein abandon time important set parameter and do not reduce the voice signal that the listener feels at IP network communication link receiving terminal in fact according to the method for claim 10.
13. one kind abandons data to optimize the method for quality of speech data on the IP network communication link, comprises step in the IP network communication link:
Monitor the appearance of IP network communication link overload situation;
Determine to have the packet of identical source and destination IP address and identical sources and destination interface; With
Response overload situation abandons from the determined a plurality of packets of IP network communication link.
14., further be included in the step of IP network communication link compressed packet title according to the method for claim 13.
15., wherein abandon determined a plurality of packet and do not reduce the voice signal that the listener feels at IP network communication link receiving terminal in fact according to the method for claim 13.
CN00805325.1A 1999-03-23 2000-03-08 Discarding traffic in IP networks to optimize the quality of speech signals Pending CN1345499A (en)

Applications Claiming Priority (2)

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US27506999A 1999-03-23 1999-03-23
US09/275,069 1999-03-23

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EP (1) EP1163768A1 (en)
KR (1) KR20020001792A (en)
CN (1) CN1345499A (en)
AU (1) AU4154600A (en)
CA (1) CA2367553A1 (en)
WO (1) WO2000057606A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100358306C (en) * 2004-03-19 2007-12-26 华为技术有限公司 A method for planning wireless communication network
CN101123557B (en) * 2006-08-10 2010-11-10 富士通株式会社 Relay apparatus, relay method
CN102959911A (en) * 2010-07-07 2013-03-06 格诺多有限公司 Apparatus & method
CN104012056A (en) * 2011-10-31 2014-08-27 惠普发展公司，有限责任合伙企业 Reducing tcp timeouts due to incast collapse at a network switch

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IL160921A (en) 2004-03-18 2009-09-01 Veraz Networks Ltd Method and device for quality management in communication networks
IL163092A (en) 2004-07-19 2010-11-30 Veraz Networks Ltd Processing of packets forwarded in communication networks
IL165010A (en) 2004-11-03 2013-04-30 Dialogic Networks Israel Ltd Methods and devices for providing protection in packet switched communication networks
US8867340B2 (en) 2005-12-21 2014-10-21 Alcatel Lucent Discarded packet indicator
US8332375B2 (en) * 2007-08-29 2012-12-11 Nirvanix, Inc. Method and system for moving requested files from one storage location to another
GB2520972A (en) * 2013-12-05 2015-06-10 Ibm Workload management
WO2020210779A2 (en) * 2019-04-12 2020-10-15 Futurewei Technologies, Inc. Coded data chunks for network qualitative services

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US4769811A (en) * 1986-12-31 1988-09-06 American Telephone And Telegraph Company, At&T Bell Laboratories Packet switching system arranged for congestion control
US5621660A (en) * 1995-04-18 1997-04-15 Sun Microsystems, Inc. Software-based encoder for a software-implemented end-to-end scalable video delivery system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100358306C (en) * 2004-03-19 2007-12-26 华为技术有限公司 A method for planning wireless communication network
CN101123557B (en) * 2006-08-10 2010-11-10 富士通株式会社 Relay apparatus, relay method
US7848309B2 (en) 2006-08-10 2010-12-07 Fujitsu Limited Relay apparatus, relay method, and relay program
CN102959911A (en) * 2010-07-07 2013-03-06 格诺多有限公司 Apparatus & method
CN102959911B (en) * 2010-07-07 2015-11-25 克雷Uk有限公司 A kind of equipment and method
CN104012056A (en) * 2011-10-31 2014-08-27 惠普发展公司，有限责任合伙企业 Reducing tcp timeouts due to incast collapse at a network switch
US9590909B2 (en) 2011-10-31 2017-03-07 Hewlett Packard Enterprise Development Lp Reducing TCP timeouts due to Incast collapse at a network switch

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KR20020001792A (en) 2002-01-09
EP1163768A1 (en) 2001-12-19
WO2000057606A1 (en) 2000-09-28
AU4154600A (en) 2000-10-09
CA2367553A1 (en) 2000-09-28

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