EP3861693A1 - Method for preserving a data transmission rate of a terminal in a communications network - Google Patents
Method for preserving a data transmission rate of a terminal in a communications networkInfo
- Publication number
- EP3861693A1 EP3861693A1 EP19795264.1A EP19795264A EP3861693A1 EP 3861693 A1 EP3861693 A1 EP 3861693A1 EP 19795264 A EP19795264 A EP 19795264A EP 3861693 A1 EP3861693 A1 EP 3861693A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- data
- terminal
- access device
- congestion
- message
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H04L47/40—Flow control; Congestion control using split connections
-
- 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]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/22—Negotiating communication rate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
- H04W28/0242—Determining whether packet losses are due to overload or to deterioration of radio communication conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0284—Traffic management, e.g. flow control or congestion control detecting congestion or overload during communication
Definitions
- the invention request is located in a communications network architecture, fixed or mobile. More specifically, the invention aims to implement techniques for temporarily storing data in order to reduce the energy consumption of transmission equipment without impacting the data transmission rate of the sender of this data.
- the steps of waking, waking up, transmitting and receiving data by the RRH are fast and close enough for the terminal receiving the data to be able to transmit an acknowledgment message to the data sender allowing this the latter to calculate the RTT corresponding to the delay between the transmission of the data and the reception of the acknowledgment message of reception of the data transmitted by the destination terminal.
- This RTT information is more and more important because it intervenes in the new mechanisms for controlling terminal congestion.
- Historical congestion mechanisms were mainly based on a packet loss calculation. The greater the loss of packets, indicating congestion in the transport network, the more the transmitter reduced the data transmission rate until the loss of packets is reduced and brought back to the desired level, congestion being reduced by reducing the data transmission rate by the transmitting terminal.
- New congestion control algorithms such as BBR (Bottleneck Bandwidth and Roundtrip) and Vegas, rely not only on packet loss but also on varying the speed of data transmission or RTT .
- the calculation of the RTT by the device transmitting the data therefore proves to be more and more determining since it intervenes in the data transmission rate by the transmitter and therefore on the quality of customer experience.
- operators of communications network architectures wish to limit the energy consumption and electromagnetic radiation of transmission equipment and therefore wish to adapt the operating periods of the equipment as much as possible to the volume of data to be transmitted.
- Operators try to optimize the periods of operation, for example by ensuring that the equipment is active and transmit the maximum amount of data continuously or almost continuously during these periods, and by influencing the standby or switching off equipment in order to reduce their energy consumption.
- Operators therefore seek to favor the standby of the equipment or of the transmission and reception cards of this equipment, if necessary by temporarily storing data to be transmitted to the recipients, but this temporary storing has the consequence of 'increase the observed RTT, and therefore the estimation of data transmission rates to the terminals. This negatively impacts the quality of the customer experience.
- the invention improves the situation using a method for preserving a transmission rate of second data transmitted by a first terminal intended for a second terminal attached to at least one access device for a communications network, the method being implemented by a node of the communications network, capable of routing said second data, and comprising:
- the first terminal calculates the RTT from the acknowledgment of receipt of the first data, transmitted by the second terminal when the latter actually receives the first data transmitted by the first terminal.
- the method makes it possible to transmit to the first terminal a message of non-congestion notification of the first data processed which will be interpreted as an acknowledgment even if the second terminal has not actually received the first data and therefore makes it possible to maintain the transmission rate.
- the first data do not correspond to a defined number of data but to a set of data sent by the first terminal and which cannot be transmitted to the second terminal without requiring their processing by a node.
- the method thus makes it possible to preserve the speed of transmission of the data, or second data, in the absence of an acknowledgment of reception of the first data transmitted, from the second terminal. It can be first and second data from the same data stream, for example from the same communication session (for example an HTTP session) or else first data and second data between two terminals but for two different streams, for example for two separate sessions (for example an HTTP session and a VolP session (in English Voice Over IP).
- the incapacity of the access device may correspond, for example, to a voluntary standby of the access device to save energy or to a scheduled intervention on the device.
- the incapacity can also correspond to putting the access device on standby or shutting down or else putting a card on the device on standby or shutting down, transmission card to the second terminal or reception card for a network node, or even an incapacity of a virtual instance of a device comprising several virtual instances.
- This incapacity temporarily prevents data transmission to the second terminal, but the preservation method makes it possible to prevent the first terminal from interpreting the incapacity as congestion in the network, and leads this first terminal then to reduce its throughput.
- transmission of the following data also called second data
- the method allows the first terminal to distinguish a voluntary unavailability of the access device from a random congestion in the network for which it does not receive a non-congestion message.
- the determination step assumes that the node routing the data obtains information on the incapacity of the access device and leads the node to apply processing to the data received until then.
- the data received until then, also called first data, intended for the second terminal are not deleted but processed by the node.
- the processing can consist, for example, of temporarily storing them, of deleting them, or else of transmitting them to a node in charge of their storage, or else of compressing them, or alternatively of routing them via another access device.
- the node can then transmit them, if the processing applied to them does not delete them, via the access device, once the latter is new operational.
- the method therefore makes it possible to maintain the optimal use of the transmission capacities of the networks by maintaining the transmission rate of the second data by the first terminal when the latter has not received an acknowledgment of the first data sent, in coming from the second terminal but non-congestion information from a node. It is possible that the first terminal will then receive the acknowledgment of the first data, actually received by the second terminal, but it will not take into account the time for reception of this acknowledgment to modulate its transmission rate of the second data to the second terminal. . Thus, if the incapacity of the access device is for example due to a voluntary standby in order to save energy, it is not perceived as an incident by equipment located upstream.
- the processing step of the preservation method further comprises a step of memorizing the first data received.
- the processing of the data can include a storage of the first data or of a part of this first data. This has the advantage of being able to implement the method without losing information transmitted by the first terminal and of minimizing the impact of the incapacity of the access device. This storage can be carried out on part of the first data
- the processing step of the preservation method further comprises a step of deleting the first data received.
- the processing of the data may include a deletion of the first data or else of part of these first data. This deletion of data occurs in particular when the data would no longer be of interest to the second terminal or when the data includes an expiration period which would be reached during the period of incapacity of the access device.
- the message for notification of the preservation process is sent after a time period t0 corresponding to a time period for the reception by the node of an acknowledgment message sent by the second terminal, in response to a sending of a message by the node to the second terminal.
- the node carrying the data, estimates the delay tO so as to avoid transmitting the congestion information too quickly, which could be interpreted by the first terminal, as an indication to increase the data transmission rate. Conversely, sending too late could encourage the first terminal to limit its transmission speed.
- the aim of the method is that the processing of the first data by the node has no positive or negative influence on the transmission rate of the second data by the first terminal. Sending the notification message to the first terminal, respecting a time limit tO after receipt of the first data to be processed by the node, meets this objective.
- the step of determining the incapacity of the at least one access device, of the preservation method comprises a step of receiving information to put the device on standby. 'access.
- the method can advantageously be implemented when the access device is put on standby, for example in periods when the traffic carried is less dense.
- the method makes it possible to program the interruptions of the access device and to activate it only when significant data traffic is to be transmitted to the terminals while ensuring that these interruptions are short enough to be imperceptible for the users.
- the energy consumption of the access devices is reduced and deterministic since the access devices are not activated, or made operational, for the transport of a reduced volume of data but only when the volume of data is sufficiently large. .
- the step of determining an incapacity of the reservation method further comprises a duration of the incapacity.
- the preservation method further comprises a step of transmitting the first processed data to the second terminal via the at least one access device if the node obtains information indicating that the at least one access device is capable of transmitting data.
- the node When the node finds that the access device is operational again, and that it can therefore route the first data received and processed, for example following the reception of an activation message from the access device or of an administrative entity, it transmits these first data. This is to prevent the node from inadvertently transmitting the first data and possibly clutter the access device if too much data is transmitted concurrently to the access device when it is restarted.
- the step of processing the first data relates to a parameter of validity of said first data.
- Certain data must be transmitted to the second terminal within a time limit which may depend on the nature of the data and / or the urgency of this data. If this time is exceeded, it is no longer useful to transmit them to the second terminal because they are no longer of interest or else a new access device must be selected.
- the node from the validity parameter, can delete the first data and thus avoid occupying too much storage memory space for the first data which were not transmitted in due time to the second terminal. This validity parameter can also encourage the node to select another access device to transmit them to the second terminal.
- the invention also relates to a method for determining the transmission rate of second data by a first terminal intended for a second terminal attached to an access device of a communications network, implemented by the first terminal in waiting for a message for acknowledging first data, comprising a step of receiving from a node of the communications network, able to route said first data, for a notification message of non-congestion of first data processed by the node during an incapacity of the access device to transmit said first data to the second terminal and a step of determining the transmission rate of the second data taking account of the non-congestion notification message received.
- the first terminal uses the non-congestion information received to determine the transmission rate of the second data, or remaining data to be sent to the second terminal after having sent the first data or initial data. In the case where the non-congestion information reaches the moment when the first terminal should have received the acknowledgment of receipt of the first data from the second terminal, then the first terminal does not modify the speed of transmission of the second data remaining to be sent to the second terminal.
- the non-congestion information comprises a duration t1 of inability of the access device to transmit the first data.
- the first terminal can advantageously use the duration t1 received in the non-congestion information, for example by comparing it to theoretical RTT values and deciding to modify the speed of transmission of the second data remaining to be transmitted to the second terminal if an accidental congestion is detected. This duration is only available if the access device has sent the first processed data to the second terminal before sending the non-congestion information to the first terminal.
- the duration t1 is compared with a delay t2, called nominal delay corresponding to the time elapsed between the transmission of data by the first terminal and the reception of the acknowledgment of these data sent by the second terminal, in the absence of congestion in the communications network.
- the comparison of the duration t1 present in the non-congestion message and of the delay t2, corresponding to the delay in receiving an acknowledgment of receipt after the transmission of the first data in a network without congestion, allows the first terminal to detect possible congestion in the communications network and modify the speed of transmission of the following data if necessary.
- the non-congestion message comprises an identifier of the at least one device incapable of transmitting the first data received.
- the invention also relates to a device for preserving a transmission rate of second data transmitted by a first terminal intended for a second terminal attached to at least one access device of a communications network, capable of routing said second data, of said network, and comprising a determination module, capable of determining an incapacity of the at least one access device to transmit to the second terminal first data received from the first terminal. It further comprises a processing module, capable of processing said first data during said determined incapacity and a transmitter, capable of transmitting, to the first terminal, a notification message of non-congestion of the first data processed.
- This device capable of implementing in all of its embodiments the preservation method which has just been described, is intended to be implemented in any type of node of a communication network.
- the preservation device can thus be implemented in routing equipment or proxy type equipment. It can also be implemented in an access device, such as a radio station, a network station controller or even in a terminal, in the context of an ad hoc network in particular.
- the invention also relates to a device for determining the transmission rate of second data intended for a second terminal attached to at least one access device of a communications network, awaiting an acknowledgment message from first data, comprising a receiver, capable of receiving from a node of the communications network, capable of routing said first data, a message of notification of non-congestion of the first data processed by the node during an inability of the at least one access device for transmitting said first data to the second terminal and a determination module, capable of determining the transmission rate of the second data taking account of the non-congestion message received.
- This device capable of implementing in all of its embodiments the determination method which has just been described, is intended to be implemented in any end device such as a fixed or mobile terminal or even a gangway or box type equipment.
- the invention also relates to a system for preserving a transmission rate of second data transmitted by a first terminal to a second terminal attached to at least one access device of a communications network, comprising:
- a node able to route the first data sent by the first terminal to the second terminal, comprising a device for preserving a transmission rate of the second data
- a terminal comprising a device for determining the transmission rate of the second data.
- the invention also relates to computer programs comprising instructions for implementing the steps of the preservation and determination methods which have just been described, when these programs are executed by processors.
- These programs can use any programming language, and be in the form of source code, object code, or intermediate code between source code and object code, such as in a partially compiled form, or in any other desirable form.
- the invention also relates to an information medium readable by a computer, and comprising instructions for computer programs as mentioned above.
- the information medium can be any entity or device capable of storing the programs.
- the support may include a storage means, such as a ROM, for example a CD ROM or a microelectronic circuit ROM, or else a magnetic recording means, for example a floppy disk or a disc. hard.
- the information medium can be a transmissible medium such as an electrical or optical signal, which can be routed via an electric cable or optical, radio or other means.
- the program according to the invention can in particular be downloaded from a network of the Internet type.
- the information medium can be an integrated circuit in which the program is incorporated, the circuit being adapted to execute or to be used in the execution of the process in question.
- FIG. 1 presents a simplified view of an architecture of a communications network, according to a prior technique
- FIG. 2 presents a simplified view of an architecture of a communications network where the preservation method is implemented, according to one aspect of the invention
- FIG. 3 presents an overview of the preservation and determination methods according to a first embodiment of the invention
- FIG. 4 shows an overview of the preservation and determination methods according to a second embodiment of the invention
- FIG. 5 shows an example of the structure of a preservation device according to one aspect of the invention.
- FIG. 6 shows an example of the structure of a determination device according to one aspect of the invention.
- FIG. 1 presents a simplified view of an architecture of a communications network according to a prior technique.
- the terminal T1 is attached to an access device D1, for example a radio antenna, and establishes a data session with the device S1, attached to the access device D3, which is for example a residential gateway, also called Box, or an operator network access equipment, such as an Optical Line Termination (OLT) equipment if it is a fiber type access.
- the access device can be another mobile terminal or even a gateway interconnecting the ad hoc network and a fixed or mobile network.
- the device S1 can be any type of terminal, fixed or mobile, or even a server. In this embodiment, it is considered to be a terminal.
- the terminal T 1 is, according to this example, a mobile terminal and the terminal S1 is a fixed terminal, but the respective terminals T1 and S1 can be either terminals or fixed or mobile servers.
- the terminal T1 establishes a telephony session over IP (Internet Protocol) with the terminal S1 and the data is for example transported in the protocols SIP (Session Initiation Protocol) and RTP (Real-Time Transport Protocol) or else WebRTC (Web Real Time Communications).
- the data session between the terminal T1 and S1 is established using the resources of a communications network 100 which can be an IP network (in English Internet Protocol).
- the data of the session between the terminal T1 and the terminal S1 are routed via the access device D1, then the nodes R1 and R2, then the access device D3 to finally be transmitted to the terminal S1.
- the data session between T1 and S1 can be uni-directional or else bi-directional between T1 and S1 on the one hand and S1 and T1 on the other.
- the data sent by S1 to the destination can take the same path as the data from T1 to S1 or a different path.
- the terminal T1 also establishes a data session with the terminal S2, which is attached to an access device D2, which is a radio access device in this example.
- the terminal S1 or S2 the data receiver receives the data transmitted by the terminal T1 less quickly than in the absence of congestion. If for example the terminal S1 receives the data from the terminal T1 on average after a delay x in the absence of congestion, it receives the data after a delay x + y when there is congestion. The additional delay is due to congestion in the communications network 100.
- the delay x corresponds to a so-called nominal delay corresponding to the time elapsed between the transmission of data by the first terminal and the reception of the acknowledgment of this data transmitted by the second terminal, in the absence of congestion in the communications network .
- Congestion may be due to a problem of too high load on one of the interconnection links on the path, between T1 and D1, or between D1 and R1, or between R1 and R2, or between R2 and D3, or between D3 and S1 or even on several of these links. Congestion occurs especially if too much data is to be sent at one time on one or more of the links. Congestion can also be due to a problem with the availability of one of the entities (D1, R1, R2, D3) at a given time, delaying the routing of data to the terminal S1.
- the terminal S1 When the terminal S1 receives the data sent by the terminal T1, it sends an acknowledgment message of the data received intended for the terminal T1. The terminal T1 can then see whether the acknowledgment message is received with an additional delay, compared to the acknowledgments received previously or compared to an average of the acknowledgment messages received. If it finds an additional delay, the terminal T1 then decreases the speed of transmission of the data remaining to be sent to the terminal T1 to limit the congestion in the network 100. In the case where the next acknowledgment of the data transmitted to the terminal S1 is received faster than the previous acknowledgment, the terminal T1 can then increase the speed of data transmission to the terminal S1. There is therefore a function for controlling the speed of transmission of data by the terminal T1 as a function of the delay in receiving the acknowledgment of the transmitted data, and therefore as a function of the congestion perceived in the communications network 100.
- the different entities present in FIG. 2 are equivalent to those described in FIG. 1.
- the terminal T1 transmits data to the terminal S1 via the same path as that presented for FIG. 1.
- the access device D3 to which the terminal S1 is attached is put on standby.
- the operator of this D3 device can choose to put the D3 device on standby for various reasons including: - the volume of data passed by the device D3 is not sufficient if one refers to the last minutes passed and the maintenance in activity of the device D3 generates costs not compensated by the data routed.
- this interruption of the device D3 is interpreted as congestion by the terminal T1 with the consequences described in the part relating to FIG. 1.
- the device D3 being temporarily unavailable for routing data from terminal T1, the method allows the node R2 to know that the device D3 is not available to route the data from the terminal T1.
- the node R2 can obtain the information from an administration platform or from the device D3 which sends it the information, for example of standby, before it is effectively unavailable or even after the node R2 has detected that the data transmitted to the D3 device has not reached it or even after having tested the connection with the D3 device, for example using the ICMP protocol (in English Internet Control Message Protocol).
- the node R2 can also include the control function of the device D3 as in the case of an architecture C-RAN Centralized Radio Access Networks) where the device D3 is an entity of the RRH type.
- the entity R2 When the entity R2 has determined the incapacity of the access device D3 to route the data from the terminal T1 to the terminal S1, it decides to apply a processing to the data which are received from the terminal T1 bound for the terminal S1. It can decide to delete them if it is for example data linked to a real-time application or it can decide to store them temporarily, while waiting to be able to actually route them to the terminal S1. He can also decide to delete some, for example if they have a limited period of validity, and store others. To store them, it can use a memory space of the entity R2 or an external memory space, that is to say not co-located with the entity R2, to temporarily store data intended for the terminal S1.
- the entity R2 also transmits a non-congestion message to the terminal T1, thus indicating to it that it has received the data that it has sent to the terminal S1.
- This non-congestion message is also called pre-acknowledgment because it is not an acknowledgment message normally sent by the terminal S1 receiving the data.
- the acknowledgment message of reception sent by the terminal S1 is likely to reach the terminal T1 later, once the data possibly has reached the terminal S1.
- This pre-acknowledgment message has the same effects for the terminal T1 as the acknowledgment message which would have arrived without the interruption, that is to say to inform the terminal T1 that the communications network 100 is not congested, and that it can therefore continue to transmit data to the terminal S1 with the same speed.
- This method thus allows the terminal T1 not to vary its speed at which data is sent to the terminal S1, thus avoiding underuse of the communications network 100, and also possibly not to lose data in the event that these are memorized.
- the device D3 can also transmit the pre-acknowledgment message which is then taken into account and relayed by the node R2.
- the pre-acknowledgment message is sent by the virtualized function or its controller and indicates for example the time necessary for the mobility of the function in the case where the virtualized function is moved and is unavailable during mobility, this time can be transmitted to the terminal T1 via the node R2.
- the preservation process can be implemented in networks using protocols such as ICMP (in English Internet Control Message Protocol), OSPF (in English Open Shortest Path First) or MPLS (in English MultiProtocol Label Switching) for the measurement of delays.
- Transport protocols such as QUIC (in English Quick UDP Internet Connections) with the use of spin bit (draft-ietf-quic-spin-exp-00, April 2018), or TCP (in English Transport Control Protocol) and its header information can also be used for RTT evaluation. Protocols specific to the measurement of delays can also be used.
- FIG. 3 presents an overview of the preservation and determination methods according to a first embodiment of the invention.
- the two terminals T1 and S1 are respectively attached to the access devices D1 and D3.
- the two terminals obtain information enabling them to be able to communicate with other terminals by using the resources of a communications network 100 comprising, in addition to the devices D1 and D3, routing entities R1 and R2.
- the devices D1 and D3 can indifferently be wireless network devices, for example of the cellular or Wi-Fi type, or else fixed network devices.
- the terminal T1 initiates a data session with the terminal S1.
- This data session corresponds for example to a data exchange relating to an application of the client-server type or even “device-to-device”.
- the data are routed through the communications network 100, and more precisely via the nodes R1 and R2. A larger number of nodes can be implemented for the routing of the data, according in particular to the size of the communications network 100.
- nodes can either be routers routing the data using the IP information or else routing entities using the application information for the routing, such as proxies, or any other entity in charge of routing the data in the network 100
- the terminal T1 transmits data to the terminal S1 during step E3, via the nodes R1 and R2, and in return, the terminal S1 acknowledges the good reception of the data during step E'3 by transmitting an acknowledgment message to the terminal T1.
- the acknowledgment message can follow the same path as the data received from the terminal T1 or another path.
- an administration station ADM transmits a command to put the access device D3 on standby. According to an alternative, it may be a standby function internal to the device D3.
- This standby can be caused by a reduction in traffic to be routed or by a voluntary interruption for maintenance or movement of a network function, or even result from negotiation between the access devices which elect a access replacing device D3.
- the standby command can also include an interruption time during which the device D3 cannot route data to or from the terminal S1.
- the ADM station can also transmit information for putting the access device D3 on standby to the node R2 to inform the latter of the service interruption of the device D3.
- the entity R2 can determine that the device D3 is unable to route data from the terminal T1 to the terminal S1 and from the terminal S1 to the terminal T1.
- a duration of incapacity of the device D3 can also be included in the message sent during step E5.
- step E6 the device D3 goes to standby, or stops, in accordance with the command received during step E4 and in the case where a period of incapacity is included in the message transmitted during the step E4, for a duration indicated in the command message.
- the terminal T 1 during step E7, sends data to the terminal
- the node R2 received, during step E5, the information relating to the inability of the device D3 to route the data to the terminal S1, possibly with a duration of incapacity. Consequently, it applies processing, which corresponds in this embodiment to storage, during step E8, to the data received from the terminal T1.
- This storage can be carried out by resources present in the entity R2 or in a storage space external to the node R2. If a duration of incapacity of the access device D3 was present in the message received by R2 during step E5, it stores the data received from the terminal T1 during this duration. If the message did not include a duration indication, it stores the data until it determines that the D3 device is available again.
- the entity R2 sends a pre-acknowledgment message for reception of the data received, intended for the terminal T1.
- This message corresponds to a notification message of non-congestion of the stored data.
- Terminal T1 upon receiving this message, knows that there is no accidental congestion in the communications network 100. Consequently, despite the fact that it has not yet received an acknowledgment of receipt of data from terminal S1, it can continue to transmit data to terminal S1, with the same transmission speed.
- the message received during step E9 comprises a session identifier, including information on the access device D1. This information can be used by the terminal S1 to transmit the following data of the session or the data of a new session with the terminal T1 via another path, not including the access device D1 or D3.
- the non-congestion information transmitted during step E9 comprises a duration t1 corresponding to a duration of inability of the device D3 to transmit data.
- a duration for processing an acknowledgment sent by the terminal S1 to the terminal T1 is possibly added a duration for processing an acknowledgment sent by the terminal S1 to the terminal T1.
- This duration t1 can advantageously be used by the terminal T1, by using the return delay of the non-congestion information of step E9 to find out whether the communications network 100 undergoes a chance congestion requiring for example a reduction in the speed of transmission of the data.
- the information t1 therefore allows the terminal T1 to distinguish the delay resulting from the standby of the device D1 and the delay resulting from an accidental congestion in the communications network 100, the standby and the accidental congestion being able to occur so concomitant.
- the terminal T1 compares the time for receiving the acknowledgment of data received during step E'3 and the time for receiving the reception of the non-congestion message, including the time t1. During step E10, the terminal T1 continues to transmit data to the terminal S1 with the same transmission speed, this data being stored by the entity R2.
- step E1 the entity R2 determines that the device D3 is again available to route the data to the terminal S1. It determines this availability, either at the end of the duration of interruption, also called duration of incapacity, if this duration of incapacity has been communicated to it, or because it receives a message indicating that the device D3 is available, from the D3 device or from the ADM administration station. It is considered in this embodiment that an interruption time was transmitted to it during step E5.
- the entity R2 transmits all of the stored data, initially transmitted by the terminal T 1, to the terminal S1.
- the terminal S1 sends back an acknowledgment message of reception of the data intended for the terminal T1.
- This acknowledgment message received with an additional delay due to the storage of data by the R2 entity, should lead the terminal T1 to slow down the data transmission rate to the terminal T1, but the non-congestion message received from the entity R2 during step E9 encourages it not to modify the current transmission rate, thereby preserving the use of the resources of the network 100 and the transmission rate of the terminal T 1.
- the node R2 is in charge of determining the incapacity of the device D3, of storing the data during the incapacity, of the notification of non-congestion intended for the terminal T1 . According to other examples, the node R1 or the device D3 can also perform these actions.
- FIG. 4 presents an overview of the preservation and determination methods according to a second embodiment of the invention.
- the terminal T1 connects to a server S1, which is considered to be an HTTP data server (in English Hypertext Transfer Protocol) or a CDN content server (in English Content Delivery Network).
- the terminal T1 attaches during step E1 to an access device D1, such as an eNodeB station or a Wi-Fi access gateway.
- the server S1 attaches to an OLT type device or to a switch (in English switch) of a data center (in English Data Center) during step E2.
- an RTT tO calculation is performed between the terminal T1 and the node R1. It is a question for the entity R1 of knowing the delay in receiving an acknowledgment received from the terminal T1 for data sent to the terminal T1.
- the entity R1 has knowledge of the terminal T1, either because it has already routed data from or to the terminal T1, or having obtained the information from an administration platform of the network 100, or even because that the entity R1 is co-located with the device D1, to which the terminal T1 is attached. In the same way, an RTT calculation is performed between the node R2 and the server S1 during step E’2.
- step E3 the server S1 transmits data to the terminal T1, for example following the establishment of a data session established by T1 or on the initiative of the server S1 in the case for example of a supervision service where the server S1 transmits data at regular intervals to the terminal T1.
- the terminal T1 On receipt of the data sent by the server S1, the terminal T1 sends during step E'3 a message of acknowledgment of the data received intended for the server S1, allowing the server S1 to make sure that the data sent have indeed been received by the terminal T 1 and with what delay.
- step E'4 the access device D1 sends a message to the router R1 to indicate to it that it is no longer appropriate to send it data because it becomes unavailable, unable to transmit or receive messages to the terminal T1.
- Router R1, in step E5 uses the information received to update its status table, indicating the status of the connections with the entities with which it communicates. In this state table, the access device D1 is indicated as incapable of transmitting data to the terminals attached to it, including the terminal T 1.
- step E7 the router R1 continues to receive data transmitted by the server S1 intended for the terminal T1.
- the router R1 saves non-real time data received from the server S1 in a storage space of the router R1 and deletes real time data.
- the router R1 sends, during step E9, a message of non-congestion of the data received during step E7 to the server S1.
- the objective of this delay t0 is for the server S1 to receive the non-congestion message within a delay comparable with the acknowledgment received during step E’3.
- the server S1 will not determine that a congestion has occurred in the communications network 100 and will not vary its data transmission rate to the terminal T1. It should be noted that in the server S1, on receipt of the non-congestion message during step E9, a congestion control algorithm uses this information to decide whether to modify the data transmission rate or not.
- steps E10, E1 1, E12 and E13 are identical to the corresponding steps of FIG. 3 with the difference close to the reversed roles of the terminals T1 and S1 on the one hand, and of the routers R1 and R2 on the other hand and that only some of data, those which have been memorized, are transmitted to the terminal T1.
- the data sent during steps E3, E7, E10 by the server S1 intended for the terminal T1 may include validity information.
- the purpose of this information is to give the data a lifespan and to allow, for example, their deletion if the storage duration exceeds the duration linked to the validity information or to delete them if the data have a too short and less than the duration of incapacity of the access device.
- the information can be in the form of an explicit duration in seconds for example or in the form of data that the router R1 can interpret and associate with a duration.
- the router R1 can select another available access device not shown in the figure (a Wi-Fi router instead of a 4G access device for example) which can route the data to the terminal T1 in place of the access device D1 unavailable, if the validity information requires it, for example for data to be transmitted urgently.
- a Wi-Fi router instead of a 4G access device for example
- FIG. 5 an example of the structure of a preservation device is presented, according to one aspect of the invention.
- the preservation device 60 implements the preservation method, of which various embodiments have just been described.
- a device 60 can be implemented in any type of node of a communication network.
- the preservation device can thus be implemented in routing equipment or proxy type equipment. It can also be implemented in an access device, such as a radio station, a network station controller or even in a terminal, in the context of an ad hoc network in particular.
- the preservation device can be instantiated in a device or in a virtualized function.
- the preservation device can thus correspond to a virtualized function deployed in a communications network.
- the device 60 comprises a processing unit 630, equipped for example with an mR microprocessor, and controlled by a computer program 610, stored in a memory 620 and implementing the preservation method according to the invention. On initialization, the code instructions of the computer program 610 are for example loaded into a RAM memory, before being executed by the processor of the processing unit 630.
- Such a device 60 comprises:
- a determination module 61 capable of determining an incapacity of at least one access device to transmit to the second terminal first data received from the first terminal
- a processing module 65 capable of processing said first data during said determined incapacity
- a transmitter 63 capable of transmitting, to the first terminal, a notification message of notification of non-congestion of the first data processed.
- FIG. 6 an example of the structure of a determination device is presented, according to one aspect of the invention.
- the determination device 80 implements the determination method, various embodiments of which have just been described.
- Such a device 80 can be implemented in any type of terminal or end device.
- the end device can be equipment for residential customers or professional customers, connected to a fixed network or to a mobile network.
- the end device may for example be a terminal, a server, a so-called box residential gateway, or an access device for a professional network, such as an access router.
- the device 80 comprises a processing unit 830, equipped for example with an mR microprocessor, and controlled by a computer program 810, stored in a memory 820 and implementing the determination method according to the invention. On initialization, the code instructions of the computer program 810 are for example loaded into a RAM memory, before being executed by the processor of the processing unit 830.
- Such a device 80 comprises:
- a receiver 84 capable of receiving from a node of the communications network, a notification message of notification of non-congestion of the first data processed,
- a determination module 85 capable of determining the transmission rate of the second data taking account of the non-congestion message received
- a transmission module 83 capable of transmitting a data given message.
- the preservation process thus makes it possible to implement a means for a network operator to intervene on a network and to cause a deterministic flow of data without impacting an automatic process of data transmission by terminals which adapts to the routing problems which may arise unexpectedly and fortuitously in the network.
- the method thus makes it possible to make the requirements of control of a communication network by an operator coexist and make interact with the automatic servo-control of data transmission by the terminals attached to the network. With this method, it is not necessary to deactivate functions for determining the speed of data transmission in the various terminals during a malfunction caused or expected in the communication network. It is therefore entirely possible to provide equipment or transmission and / or reception cards to be put on standby in equipment of the communication network, thereby saving energy resources and allowing interventions on equipment, while continuing to use the mechanisms for controlling data transmission by terminals attached to the communication network.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1859119A FR3086824A1 (en) | 2018-10-02 | 2018-10-02 | METHOD FOR PRESERVING A DATA TRANSMISSION RATE OF A TERMINAL IN A COMMUNICATIONS NETWORK |
PCT/FR2019/052253 WO2020070408A1 (en) | 2018-10-02 | 2019-09-25 | Method for preserving a data transmission rate of a terminal in a communications network |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3861693A1 true EP3861693A1 (en) | 2021-08-11 |
Family
ID=66530077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19795264.1A Pending EP3861693A1 (en) | 2018-10-02 | 2019-09-25 | Method for preserving a data transmission rate of a terminal in a communications network |
Country Status (5)
Country | Link |
---|---|
US (1) | US11871282B2 (en) |
EP (1) | EP3861693A1 (en) |
CN (1) | CN112789833B (en) |
FR (1) | FR3086824A1 (en) |
WO (1) | WO2020070408A1 (en) |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7106742B1 (en) * | 2000-01-13 | 2006-09-12 | Mercury Computer Systems, Inc. | Method and system for link fabric error detection and message flow control |
US7142508B2 (en) * | 2000-12-22 | 2006-11-28 | Radiance Technologies, Inc. | System and method for controlling data transfer rates on a network |
CA2357785A1 (en) * | 2001-09-14 | 2003-03-14 | Alcatel Canada Inc. | Intelligent routing for effective utilization of network signaling resources |
US6868509B2 (en) * | 2001-12-07 | 2005-03-15 | Invensys Systems, Inc. | Method and apparatus for network fault correction via adaptive fault router |
US7251704B2 (en) * | 2002-08-23 | 2007-07-31 | Intel Corporation | Store and forward switch device, system and method |
US7177272B2 (en) * | 2003-06-25 | 2007-02-13 | Nokia Corporation | System and method for optimizing link throughput in response to non-congestion-related packet loss |
US7102505B2 (en) * | 2004-05-27 | 2006-09-05 | Lawrence Kates | Wireless sensor system |
CN101534519B (en) * | 2008-03-14 | 2014-03-12 | 摩托罗拉移动公司 | Method for displaying package switching congestion state of wireless communication network |
US9203755B1 (en) * | 2011-09-27 | 2015-12-01 | Cisco Technology, Inc. | Error message monitoring in a network environment |
EP3000255A1 (en) * | 2013-05-20 | 2016-03-30 | Telefonaktiebolaget LM Ericsson (publ) | Congestion control in a communications network |
CN106878191B (en) * | 2015-12-14 | 2018-11-16 | 华为技术有限公司 | A kind of data transferring method, sending node, receiving node and data communication system |
FR3053202A1 (en) * | 2016-06-24 | 2017-12-29 | Orange | METHOD FOR MANAGING THE SLEEP STATUS OF A MOBILE TERMINAL |
US20230134552A1 (en) * | 2020-08-05 | 2023-05-04 | Samsung Electronics Co., Ltd. | Method and apparatus for recording information in mobile communication system |
-
2018
- 2018-10-02 FR FR1859119A patent/FR3086824A1/en not_active Withdrawn
-
2019
- 2019-09-25 US US17/282,186 patent/US11871282B2/en active Active
- 2019-09-25 WO PCT/FR2019/052253 patent/WO2020070408A1/en unknown
- 2019-09-25 EP EP19795264.1A patent/EP3861693A1/en active Pending
- 2019-09-25 CN CN201980064859.XA patent/CN112789833B/en active Active
Also Published As
Publication number | Publication date |
---|---|
US11871282B2 (en) | 2024-01-09 |
WO2020070408A1 (en) | 2020-04-09 |
US20220014972A1 (en) | 2022-01-13 |
CN112789833A (en) | 2021-05-11 |
CN112789833B (en) | 2024-08-13 |
FR3086824A1 (en) | 2020-04-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10044593B2 (en) | Smart ethernet edge networking system | |
EP2425592B1 (en) | Adaptive rate control based on overload signals | |
US8699343B2 (en) | Adaptive rate control based on overload signals | |
EP2862324B1 (en) | Method and device for quick, unobtrusive estimation of the available bandwidth between two ip nodes | |
EP3238406B1 (en) | Treatment method of application data delivery | |
CA3149828A1 (en) | Systems and methods for managing data packet communications | |
EP3580898A1 (en) | Method and device for determining an energy-saving routing path | |
EP2210396B1 (en) | System of interconnection between at least one communication apparatus and at least one remote information system and interconnection method | |
EP1479203B1 (en) | Quality of service request correlation | |
WO2020070408A1 (en) | Method for preserving a data transmission rate of a terminal in a communications network | |
EP2449727B1 (en) | Device for controlling the opening of sessions, service platform with such device, and related method, computer software, and data medium | |
EP2815547B1 (en) | Technique for processing a data stream between a server and a client entity | |
FR3058863A1 (en) | PROXY EQUIPMENT IN A CELLULAR TELECOMMUNICATION SYSTEM | |
WO2009122071A2 (en) | Method for managing device load in a system for implementing an application service | |
EP3085035B1 (en) | Technique for signalling congestion in a packet communication network | |
EP3384645B1 (en) | Method for processing data packets, corresponding computer program product, storage medium, device and network node device | |
EP3117573A1 (en) | Method of managing congestion of a transmission link in a packet communication network | |
WO2007101962A1 (en) | Multilayer mechanism for regulating the rate of a tcp data flow in a full duplex ethernet high-volume network | |
WO2005034469A1 (en) | Method for adapting a congestion avoidance threshold as a function of the load on a network and associated transmission device | |
FR2963517A1 (en) | Method for transmitting data stream between base station and e.g. digital subscriber line access multiplexer of communication network in traffic engineering field, involves transmitting data stream to destination of communication equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20210503 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20230329 |