WO2011035589A1

WO2011035589A1 - Bandwidth controlling method and device, evolved packet system and gateway

Info

Publication number: WO2011035589A1
Application number: PCT/CN2010/072622
Authority: WO
Inventors: 成云飞; 李华光
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-09-24
Filing date: 2010-05-11
Publication date: 2011-03-31
Also published as: CN101674244B; CN101674244A

Abstract

A bandwidth controlling method which is used in packet data network gateway is provided. The method includes the following steps: a user sends an activation request which carries a quality of service parameter to a packet data network gateway; after receiving the activation request which carries the quality of service parameter, the packet data network gateway calculates uplink and downlink bandwidth threshold values according to the quality of service parameter; the packet data network gateway sends an activation response to the user, wherein the activation response carries an initially negotiated quality of service parameter; the user sends a data message to the packet data network gateway after receiving the activation response sent from the packet data network gateway; the packet data network gateway controls the transfer of the data message according to the uplink and downlink bandwidth threshold values after receiving the data message. Also a corresponding device, a gateway and an evolved packet system are provided by the invention. User experience can be improved effectively, time delay of service establishment can be reduced and always-online for the user can be realized actually by the invention.

Description

Bandwidth control method and device, evolved packet system and gateway

Technical field

The present invention relates to the field of bandwidth control technologies for mobile communications, and in particular to a bandwidth control method and apparatus in third generation mobile communication, and a packet system using the bandwidth control method and apparatus, a gateway, and an extension.

Background technique

The Quality of Service (QoS) number is a security mechanism used to solve problems such as network delay and congestion. It is a communication or program type priority technology applied to the entire network connection. Quality of Service security mechanisms enable users to get better quality of networked services. In the packet service of 3G networks, quality of service is given higher expectations. However, since the implementation of the QoS mechanism is not perfect, operators and equipment vendors are developing practical service quality security mechanisms for their own systems.

The third-generation mobile communication also introduces a QoS parameter security mechanism. Figure 1 is a schematic diagram of the Evolved Packet System (EPS) of the 3rd Generation Partnership Project (3GPP). The packet system evolved by the 3rd Generation Partnership Project includes the Evolved Universal Terrestrial Radio Access Network (E-UTRAN), the Mobility Management Entity (MME), and the Moonlight Service Gateway 105 (Single Gateway, S-GW), Packet Data Network Gateway (P-GW), Home Subscriber Server (HSS), Policy and Charging Rules Function Entity 104 (Policy) And Charging Rules Function, PCRF) and packet data network 107. Packet data network gateway 604 provides routing encapsulation of data packets between the mobile network and packet data network 107.

Generally, the bandwidth control of the user is performed on the wireless side, as in the evolved universal mobile communication system terrestrial radio access network 101, and the bandwidth control on the wireless side is performed by multiple dispersed wireless access points, which will make There are many control points, which is not conducive to unified management. Summary of the invention

The main purpose of the present invention is to provide a bandwidth control method, a bandwidth control device, a gateway, and an evolved packet system, which are used to solve the above-mentioned bandwidth control by multiple distributed wireless access points, so that there are many control points, which is not conducive to unified Management issues.

A bandwidth control method is used in a packet data network gateway, the method comprising: the user sending an activation request carrying a quality of service parameter to a packet data network gateway; after receiving the activation request carrying the quality of service parameter, the packet data network gateway receives Calculating the uplink and downlink bandwidth thresholds according to the quality of service parameters; the packet data network gateway sends an activation response to the user, and the activation response carries the preliminary negotiated quality of service parameter; the user receives the activation response of the packet data network gateway to the packet data network. The gateway sends a data packet; and the packet data network gateway controls the forwarding of the data packet according to the uplink and downlink bandwidth thresholds after receiving the data packet.

Preferably, the foregoing bandwidth control method further includes: after the packet data network gateway receives the activation request carrying the QoS parameter, calculating the uplink and downlink bandwidth threshold according to the QoS parameter, the method includes: The QoS parameter associated with the access point name configured in the NMS is negotiated; or the QoS parameter carried in the activation request is associated with the QoS parameter associated with the access point name configured in the NMS and in the policy and charging function entity. The quality of service parameters are negotiated; and the uplink and downlink bandwidth thresholds are calculated according to the negotiated quality of service parameters and stored in the context of the user's packet data protocol.

Preferably, the foregoing bandwidth control method further includes: after the step of calculating the uplink and downlink bandwidth thresholds according to the QoS parameters, initializing the uplink token bucket and the downlink token bucket of the user, to set the uplink token bucket And an initial token bucket parameter of the downlink token bucket, where the token bucket parameter includes a maximum number of tokens, a current token number, a reference time, a token update period, and a token update rate.

Preferably, the QoS parameter includes at least an uplink maximum bit rate and a downlink maximum bit rate; the uplink bandwidth threshold is converted according to a 3GPP protocol; the downlink bandwidth threshold is The downlink maximum bit rate is converted according to the 3GPP protocol; the uplink bandwidth threshold is used as the maximum number of tokens of the uplink token bucket of the user; and the downlink bandwidth threshold is used as the maximum of the downlink token bucket of the user. The number of tokens; the initial number of tokens is equal to the maximum number of tokens in the token bucket. Preferably, the foregoing bandwidth control method further includes: after the packet data network gateway receives the data packet, the step of controlling the forwarding of the data packet according to the uplink and downlink bandwidth thresholds includes: recording the current time of receiving the data packet, if If the time interval between the current time and the reference time is less than the set token update period, the packet data network gateway controls the forwarding of the data packet according to the current token bucket parameter; if not less, the packet data network gateway updates the token bucket. Parameters related to controlling data packet forwarding, and modifying the number of tokens in the token bucket.

Preferably, the foregoing bandwidth control method further includes: the step of the packet data network gateway updating the parameters related to the forwarding of the data packet in the token bucket, including: the current number of tokens in the token bucket according to the specified rate Complementing, while updating the initial reference time to the current time; the specified rate is equal to the maximum number of tokens added during the token update period; the number of supplemental tokens is equal to the time interval multiplied by the specified rate, supplemented If the number of tokens after the maximum number of tokens exceeds the maximum number of tokens, the maximum number of tokens in the token bucket is taken as the current number of tokens.

Preferably, the bandwidth control method further includes: the number of tokens to be consumed by each of the data packets is equal to the number of bytes of the data packet, and the packet data network gateway controls the data according to the current token bucket parameter. The step of forwarding the packet includes: when the number of tokens in the token bucket is not less than the number of bytes of the data packet, allowing the data packet to pass and subtracting the number of tokens in the token bucket The number of bytes of the packet. If it is less than, the data packet will not be allowed to pass.

A bandwidth control device is disposed in a packet data network gateway, where the bandwidth control device includes: a receiving module, configured to: receive, by the user, an activation request that carries a quality of service parameter to the packet data network gateway, and receive the user to send the a data packet; a calculation module, configured to: after the packet data network gateway receives the activation request carrying the QoS parameter, calculate an uplink and downlink bandwidth threshold according to the QoS parameter; and a control module, The method is configured to: after the packet data network gateway receives the data packet, control the forwarding of the data packet according to the uplink and downlink bandwidth thresholds; and the sending module is configured to: send an activation response to the user, and carry the service in the activation response Quality parameters.

Preferably, the bandwidth control apparatus further includes: a negotiation module, configured to: negotiate a quality of service parameter; and after the packet data network gateway receives the activation request carrying the quality of service parameter, the negotiation module configures the quality of service parameter and the network management The quality of service parameter associated with the access point name Line negotiation; or negotiate the quality of service parameter carried in the activation request with the quality of service parameter associated with the access point name configured in the network management and the quality of service parameter in the policy and charging function entity.

Preferably, the calculating module is further configured to: calculate the uplink and downlink bandwidth threshold according to the negotiated quality of service parameter, and save the packet in a packet data protocol context of the user.

Preferably, the control module is further configured to: initialize an uplink token bucket and a downlink token bucket of the user, to set an initial token bucket parameter of the uplink token bucket and a downlink token bucket, where the token bucket Parameters include the maximum number of tokens, the current number of tokens, the base time, the token update period, and the token update rate.

Preferably, the QoS parameter includes at least an uplink maximum bit rate and a downlink maximum bit rate; the uplink bandwidth threshold is converted according to a 3GPP protocol, and the downlink bandwidth threshold is The downlink maximum bit rate is converted according to the 3GPP protocol; the uplink bandwidth threshold is used as the maximum number of tokens of the uplink token bucket of the user, and the downlink bandwidth threshold is used as the maximum of the downlink token bucket of the user. The number of tokens; the initial number of tokens is equal to the maximum number of tokens in the token bucket.

Preferably, the control module is a token bucket algorithm execution module, configured to: after receiving the data packet, the packet data network gateway records a current time of receiving the data packet; and if the current time The time interval with the reference time is less than the set token update period, and the packet data network gateway controls forwarding of the data packet according to the current token bucket parameter; if not less than, the packet data network gateway is updated. The parameters related to the control data packet forwarding in the token bucket, and the number of tokens in the token bucket.

Preferably, the token bucket algorithm execution module is further configured to: supplement the current token number in the token bucket according to the specified rate, and update the initial reference time to the current time; the specified rate is equal to the token The maximum number of tokens added in the update period; the number of tokens added is equal to the time interval multiplied by the specified rate, and if the number of tokens after the supplement exceeds the maximum number of tokens, the maximum number of tokens in the token bucket is taken. As the current number of tokens.

Preferably, the control module is further configured to: the number of tokens to be consumed in each of the data packets is equal to the number of bytes of the data packet, and the number of tokens in the token bucket is not less than the datagram. The number of bytes of the text is allowed to pass, and the number of tokens in the token bucket is subtracted from the number of bytes of the data packet. If it is less than, the data packet is not allowed to pass. A gateway, the gateway being applied to a packet data network, including any of the above bandwidth control devices.

An evolved packet system, including the above gateway.

The bandwidth control method, the bandwidth control device, the packet data network gateway and the evolved packet system in the invention can effectively improve the user experience, reduce the delay of service establishment, truly realize the "always on" of the user, and can perform network attachment in the user. At the same time, a fixed data rate bearer is established for the user to ensure its basic business requirements.

BRIEF abstract

Figure 1 is a schematic diagram of a packet system evolved by the 3rd Generation Partnership Project;

2 is a flow chart showing an embodiment of a bandwidth control method according to the present invention;

3 is a schematic structural diagram of an embodiment of a bandwidth control apparatus according to the present invention;

4 is a flow chart showing another embodiment of a bandwidth control method according to the present invention;

Figure 5a shows a schematic diagram before the data is forwarded;

Figure 5b shows a schematic diagram of the data after forwarding;

FIG. 6 is a schematic structural diagram of another embodiment of a bandwidth control apparatus according to the present invention; FIG. 7 is a flowchart of still another embodiment of a bandwidth control method according to the present invention.

The implementation, functional features, and advantages of the present invention will be further described with reference to the accompanying drawings.

Preferred embodiment of the invention

The technical solutions of the present invention are further described in detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can understand the invention and can implement the invention. The examples are not intended to limit the invention.

2 is a flow chart showing an embodiment of a bandwidth control method according to the present invention.

Step S201: The user 601 sends an activation request carrying the quality of service parameter to the packet data network gateway 604.

Step S202: After receiving the activation request carrying the QoS parameter, the packet data network gateway 604 calculates the uplink and downlink bandwidth thresholds according to the QoS parameters.

Step S203: The packet data network gateway 604 sends an activation response to the user 601, where the activation response carries the quality of service parameter of the preliminary negotiation.

Step S204: After receiving the activation response of the packet data network gateway 604, the user 601 sends a data packet to the packet data network gateway 604.

Step S205: After receiving the data packet, the packet data network gateway 604 controls the forwarding of the data packet according to the uplink and downlink bandwidth thresholds to control the uplink and downlink bandwidth of the user 601.

FIG. 3 is a schematic structural diagram of an embodiment of a bandwidth control apparatus 300 according to the present invention.

In this embodiment, the bandwidth control apparatus 300 includes a receiving module 301, a calculating module 302, a control module 303, and a sending module 304.

The receiving module 301 is configured to receive information. The information includes an activation request sent by the user 601 carrying the quality of service parameter and a data message. The quality of service parameter is used to determine a quality of service parameter assigned to the user 601.

The calculating module 302 is configured to calculate, after the packet data network gateway 604 receives the activation request carrying the quality of service parameter, the uplink and downlink bandwidth threshold values according to the quality of service parameter.

The control module 303 is configured to control forwarding of the data packet according to the uplink and downlink bandwidth thresholds after the packet data network gateway 604 receives the data packet.

The sending module 304 is configured to send information. This information is a data message or an activation response. When the information is a data packet, the sending module forwards the data packet according to the forwarding rate; when the information is activated When responding, the activation response carries a quality of service parameter.

FIG. 4 is a flow chart showing another embodiment of a bandwidth control method according to the present invention.

In step S401, the user 601 sends an activation request carrying the quality of service parameter to the packet data network gateway 604. The quality of service parameter is a quality of service parameter initially negotiated by the serving gateway 105 with the user 601. The preliminary negotiated quality of service parameter is to determine the quality of service parameters assigned to the user 601.

Step S402, after receiving the activation request carrying the QoS parameter, the packet data network gateway 604 negotiates the QoS parameter carried in the activation request with the QoS parameter associated with the access point name configured in the network management, according to the negotiated The QoS parameters calculate the uplink and downlink bandwidth thresholds and are stored in the packet data protocol context (PDP Context) of the user 601. At the same time, the upstream token bucket (Token Bucket) and the downlink token bucket of the user 601 are initialized to set an initial token bucket parameter of the token bucket. The token bucket parameters include the maximum number of tokens, the current number of tokens, the base time, the token update period, and the token update rate.

In this embodiment, the two parameters of the maximum bit rate (Maximum Bitrate) and the downlink maximum bit rate are respectively converted into uplink and downlink bandwidth thresholds according to the 3GPP protocol, respectively, as the uplink and downlink tokens of the user 601. The maximum number of tokens in the bucket. The initial number of tokens is equal to the maximum number of tokens in the token bucket. The packet data protocol context includes the following parameters: access point name, quality of service parameters, packet data protocol type, packet data protocol address, and the like.

Step S403: The packet data network gateway 604 sends an activation response to the user 601, where the activation response carries the negotiated quality of service parameter.

Step S404, after receiving the activation response of the packet data network gateway 604, the user 601 starts to send a data message to the packet data network gateway 604.

Step S405: After receiving the data message of the user 601, the packet data network gateway 604 records the current time of receiving the data of the user 601. If the time interval between the current time and the reference time is less than the set token update period, the process proceeds to step S407, otherwise, the process proceeds to step S406.

Step S406, the packet data network gateway 604 updates the parameters related to the forwarding of the control data packet in the token bucket, and modifies the number of tokens in the token bucket. In this embodiment, the packet data network gateway When the token bucket parameter is updated 604, the current number of tokens in the token bucket is supplemented according to the specified rate, and the initial reference time is updated to the current time. The specified rate is equal to the maximum number of tokens added during the token update period. The number of added tokens is equal to the time interval multiplied by the specified rate. If the number of tokens after the supplement exceeds the maximum number of tokens, the maximum number of tokens in the token bucket is taken as the current number of tokens. After the packet data network gateway 604 updates the token bucket parameter, it controls the forwarding of the data packet according to the updated token bucket parameter when the data packet is received.

Step S407: The packet data network gateway 604 controls forwarding of the data packet according to the current token bucket parameter. In the embodiment of the present invention, the number of tokens to be consumed by each data packet is equal to the number of bytes. Only when the number of tokens in the token bucket is not less than the number of bytes of the packet, the packet is allowed to pass. The number of tokens in the token bucket minus the number of bytes in the packet. Otherwise, the packet will not be allowed to pass. For the uplink and downlink packets, separate token buckets are used to control the uplink bandwidth and the downlink bandwidth respectively. The packet network network gateway 604 will perform the discarding process for data packets that are out of bandwidth.

For the manner in which the packet data network gateway 604 controls the forwarding of data packets according to the token bucket parameters, refer to FIG. 5 , which is a schematic diagram of the token bucket packet data network gateway 604 controlling the forwarding of data packets according to the token bucket parameters. Figure 5 includes Figures 5a and 5b.

Figure 5a is a schematic diagram of data message forwarding. In Figure 5a, when the user 601 sends 3 bytes to the packet data network gateway 604 (each small box in Figure 5a represents one byte of the data message) At time 602, the packet data network gateway 604 controls the forwarding of the data message 602 according to the number of tokens 605 in its token bucket 603. In Figure 5a, the user 601 sends a 3-byte data message 602. There are five tokens 605 in the token bucket 603.

Figure 5b is a schematic diagram of the data after forwarding. In Figure 5a, since the user 601 has sent a 3-byte data message 602 and the token bucket 603 has 5 tokens 605, the packet data network gateway 604 forwards the 3-byte datagram in Figure 5b. In the text 602, two tokens 605 remain in the token bucket 603.

Step S408: Perform subsequent processing on the user 601. After the processing is completed, the packet data network gateway 604 sends the data message to the packet data network 107.

FIG. 6 is a schematic structural diagram of another embodiment of the bandwidth control apparatus 400 of the present invention. In this embodiment, the bandwidth control apparatus 400 includes a receiving module 301, a negotiating module 602, a calculating module 302, a token bucket algorithm executing module 603, and a sending module 304.

The receiving module 301 is configured to receive information. The information includes an activation request sent by the user 601 carrying the quality of service parameter and a data message. The quality of service parameter is a quality of service parameter initially negotiated by the serving gateway 105 with the user 601 for determining a quality of service parameter assigned to the user 601.

The negotiation module 602 is configured to negotiate a QoS parameter. After the packet data network gateway 604 receives the activation request that carries the QoS parameter, the QoS parameter is associated with the QoS parameter associated with the access point name configured in the U2000. Negotiation.

The calculating module 302 is configured to calculate an uplink and downlink bandwidth threshold according to the QoS parameter after the packet data network gateway 604 receives the activation request carrying the QoS parameter, and save the packet in the packet data protocol context of the user 601. The calculation module 302 is further configured to calculate the uplink and downlink bandwidth thresholds according to the negotiated quality of service parameters, and save the information in the packet data protocol context of the user 601.

In this embodiment, the QoS parameter includes at least an uplink maximum bitrate and a downlink maximum bitrate, and the uplink bandwidth threshold and the downlink bandwidth threshold are uplink maximum bit rates and downlink maximum bit rates according to the 3GPP protocol. The uplink bandwidth threshold and the downlink bandwidth threshold are respectively used as the maximum number of tokens of the user 601 uplink and downlink token buckets, and the initial token number is equal to the maximum token number of the token bucket. The packet data protocol context includes the following parameters: access point name, quality of service parameters, packet data protocol type, packet data protocol address, and so on.

The token bucket algorithm execution module 603 is configured to record, after the packet data network gateway 604 receives the data packet, the current time of receiving the data packet; if the current time and the reference time interval are less than the set token update period The packet data network gateway 604 controls the forwarding of the data packet according to the current token bucket parameter. Otherwise, the packet data network gateway 604 updates the parameters related to the control data packet forwarding in the token bucket, and modifies the token in the token bucket. Number of cards.

In this embodiment, the token bucket algorithm execution module 603 is further configured to supplement the current token number in the token bucket according to the specified rate, and update the initial reference time to the current time; the specified rate is equal to The maximum number of tokens added in the card update period; the number of tokens added is equal to the time interval multiplied by the specified rate, and if the number of tokens after the supplement exceeds the maximum number of tokens, the maximum number of tokens in the token bucket is taken. As the current number of tokens. In the embodiment of the present invention, the number of tokens to be consumed per data packet is equal to the number of bytes of the data packet, and the data is allowed only when the number of tokens in the token bucket is not less than the number of bytes of the data packet. The packet is passed and the number of tokens in the token bucket is subtracted from the number of bytes of the data packet. Otherwise, the packet will not be allowed to pass.

The sending module 304 is configured to send bandwidth control information. The bandwidth control information is a data message or an activation response. When the information is a data message, the sending module 304 forwards the data message according to the execution result of the module 603 by the token bucket algorithm.

FIG. 7 is a flow chart showing still another embodiment of the bandwidth control method of the present invention.

Step S701, the user 601 sends an activation request carrying the quality of service parameter to the packet data network gateway 604. The quality of service parameter is a quality of service parameter initially negotiated by the serving gateway 105 with the user 601. The preliminary negotiated quality of service parameter is to determine the quality of service parameters assigned to the user 601.

Step S702: After receiving the activation request carrying the quality of service parameter, the packet data network gateway 604 sends a control policy request to the policy and charging rule function entity 104.

Step S703: After receiving the control policy request sent by the packet data network gateway 604, the policy and charging rule function entity 104 sends a control policy response to the packet data network gateway 604. The quality of service parameters carried in the control policy response contain control strategies for bandwidth control.

Step S704, after receiving the control policy response sent by the policy and charging rule function entity 104, the packet data network gateway 604 activates the QoS parameter carried in the request, the QoS parameter associated with the access point name configured in the network management, and The quality of service parameters in the control policy response are negotiated.

The uplink and downlink bandwidth thresholds are calculated based on the negotiated quality of service parameters and stored in the packet data protocol context of the user 601. At the same time, the token bucket (Token Bucket) corresponding to the uplink and downlink of the user 601 is initialized to set the initial token bucket parameter of the token bucket. The token bucket parameters include the maximum number of tokens, the current number of tokens, the base time, the token update period, and the token update rate.

In this embodiment, the two parameters of the maximum bit rate and the maximum bit rate are converted into uplink and downlink bandwidth thresholds according to the 3GPP protocol, respectively. The maximum number of tokens for the upstream and downstream token buckets of the user 601, and the initial number of tokens is equal to the maximum number of tokens of the token bucket. The packet data protocol context includes the following parameters: access point name, quality of service parameters, packet data protocol type, packet data protocol address, and the like.

Step S705: The packet data network gateway 604 sends an activation response to the user 601, where the activation response carries the negotiated quality of service parameter.

Step S706, after receiving the activation response of the packet data network gateway 604, the user 601 starts to send a data message to the packet data network gateway 604.

Step S707: After receiving the data message of the user 601, the packet data network gateway 604 records the current time of receiving the data of the user 601. If the time interval between the current time and the reference time is less than the set token update period, then step S709 is reached, otherwise step S708 is reached.

Step S708, the packet data network gateway 604 updates the parameters related to the forwarding of the control data packet in the token bucket, and modifies the number of tokens in the token bucket. In this embodiment, when the packet data network gateway 604 updates the token bucket parameter, the current token number in the token bucket is supplemented according to the specified rate, and the initial reference time is updated to the current time. The specified rate is equal to the maximum number of tokens added during the token update period. The number of tokens to be supplemented is equal to the time interval multiplied by the specified rate. If the number of tokens after the supplement exceeds the maximum number of tokens, the maximum number of tokens in the token bucket is taken as the current number of tokens. After the P-GW updates the token bucket parameters, the data packet is forwarded according to the updated token bucket parameter.

Step S709, the packet data network gateway 604 controls forwarding of the data packet according to the current token bucket parameter. In the embodiment of the present invention, the number of tokens to be consumed by each data packet is equal to the number of bytes. Only when the number of tokens in the token bucket is not less than the number of bytes of the packet, the packet is allowed to pass. The number of tokens in the token bucket minus the number of bytes in the packet. Otherwise, the packet will not be allowed to pass. For the uplink and downlink packets, separate token buckets are used to control the uplink bandwidth and the downlink bandwidth respectively. The packet network network gateway 604 will perform the discarding process for data packets that are out of bandwidth.

For the manner in which the packet data network gateway 604 controls the forwarding of data packets according to the token bucket parameters, refer to FIG. 5 , which is a schematic diagram of the token bucket packet data network gateway 604 controlling the forwarding of data packets according to the token bucket parameters.

Step S710, performing subsequent processing on the user 601 ·^艮文, after the processing is completed, the packet data network The gateway 604 sends the data message to the packet data network 107.

The present invention further provides a bandwidth control apparatus 400 for performing another embodiment of the bandwidth control method shown in FIG. The bandwidth control apparatus 400 in this embodiment includes a receiving module 301, a negotiation module 602, a calculation module 302, a token bucket algorithm execution module 603, and a sending module 304. Different from the bandwidth control apparatus 400 shown in FIG. 6, the negotiation module 602 in this embodiment is further configured to use the quality of service parameter carried in the activation request, the quality of service parameter associated with the access point name configured in the network management, and The quality of service parameters in the control policy response are negotiated.

The present invention also provides a packet data network gateway 604 comprising a bandwidth control device 400 or a bandwidth control device 300. The packet data network gateway 604 is identical to the well-known packet data network gateway except that the wide control device 400 or the bandwidth control device 300 is different from the well-known packet data network gateway.

The sending module 304 is configured to send information. This information is a data message or an activation response. When the information is a data packet, the sending module forwards the data packet according to the forwarding rate; when the information is an activation response, the activation response carries the quality of service parameter.

In this embodiment, the bandwidth control apparatus 400 includes a receiving module 301, a negotiation module 602, and a meter. The calculation module 302, the token bucket algorithm execution module 603, and the sending module 304.

The present invention also provides an evolved packet system, including a packet data network gateway 604, which includes a bandwidth control device 400 or a bandwidth control device 300. The evolved packet system is different from the well-known evolved packet system except that the packet data network gateway 604 is identical to the well-known evolved packet system, and other modules and functions of the packet data network gateway 604 are well known. The packet data network gateway is the same.

In this embodiment, the bandwidth control apparatus 400 includes a receiving module 301, a negotiating module 602, a calculating module 302, a token bucket algorithm executing module 603, and a sending module 304. The receiving module 301 is configured to receive information. The information includes an activation request sent by the user 601 carrying the quality of service parameter and a data message. The quality of service parameter is a quality of service parameter initially negotiated by the serving gateway 105 and the user 601 for determining a quality of service parameter assigned to the user 601.

In this embodiment, the token bucket algorithm execution module 603 is further configured to supplement the current token number in the token bucket according to the specified rate, and update the initial reference time to the current time; the specified rate is equal to The maximum number of tokens added in the card update period; the number of tokens added is equal to the time interval multiplied by the specified rate, and if the number of tokens after the supplement exceeds the maximum number of tokens, the maximum number of tokens in the token bucket is taken. As the current number of tokens.

In the embodiment of the present invention, the number of tokens to be consumed per data packet is equal to the number of bytes of the data packet, and the data is allowed only when the number of tokens in the token bucket is not less than the number of bytes of the data packet. Message The number of tokens in the token bucket is subtracted from the number of bytes of the data packet, otherwise the packet will not be allowed to pass. The sending module 304 is configured to send bandwidth control information. The bandwidth control information is a data packet or an activation response. When the information is a data packet, the sending module 304 forwards the data packet according to the execution result of the token bucket algorithm execution module 603.

The bandwidth control method, the bandwidth control devices 400 and 300, the packet data network gateway 604, and the evolved packet system in the present invention can implement bandwidth control according to the user packet data protocol context through the core network device (packet data network gateway 604), which is effective. Improve the user experience, reduce the delay of service establishment, and truly realize the "always on" of the user. It can establish a fixed data rate bearer for the user while ensuring the basic business needs of the user while the network is attached.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent flow transformation made by the specification and the drawings of the present invention may be directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Industrial Applicability The bandwidth control method, the bandwidth control device, the packet data network gateway, and the evolved packet system in the present invention can effectively improve the user experience, reduce the delay of service establishment, and truly realize the "always on" user, and can be in the user. While the network is attached, a fixed data rate bearer is established for the user to ensure its basic service requirements.

Claims

Claim

A bandwidth control method for a packet data network gateway, comprising:

The user sends an activation request carrying the QoS parameter to the packet data network gateway; after receiving the activation request carrying the QoS parameter, the packet data network gateway calculates the uplink and downlink bandwidth threshold according to the service quality parameter;

The packet data network gateway sends an activation response to the user, and the activation response carries the service quality parameter of the preliminary negotiation;

After receiving the activation response of the packet data network gateway, the user sends data to the packet data network gateway;

After receiving the data packet, the packet data network gateway controls the forwarding of the data packet according to the uplink and downlink bandwidth thresholds.

The bandwidth control method according to claim 1, wherein the step of calculating, by the packet data network gateway, the uplink and downlink bandwidth thresholds according to the quality of service parameters after receiving the activation request carrying the QoS parameter comprises:

Negotiating the QoS parameter with the QoS parameter associated with the access point name configured in the network management system; or the QoS parameter carried in the activation request and the QoS parameter associated with the access point name configured in the U2000 And negotiation of quality of service parameters in the policy and charging function entities;

The uplink and downlink bandwidth thresholds are calculated based on the negotiated quality of service parameters and are stored in the user's packet data protocol context.

The bandwidth control method according to claim 2, wherein after the step of calculating an uplink and a downlink bandwidth threshold according to the quality of service parameter, the bandwidth control method further includes:

Initializing the user's uplink token bucket and the downlink token bucket to set an initial token bucket parameter of the uplink token bucket and the downlink token bucket, where the token bucket parameter includes a maximum number of tokens and a current token Number, base time, token update period, and token update rate.

4. The bandwidth control method according to claim 3, wherein

The quality of service parameter includes at least an uplink maximum bit rate and a downlink maximum bit rate; The uplink bandwidth threshold is converted according to the 3GPP protocol, and the downlink bandwidth threshold is converted according to the 3GPP protocol; the uplink bandwidth threshold is The value is the maximum number of tokens of the user's uplink token bucket; the downlink bandwidth threshold is the maximum number of tokens of the downlink token bucket of the user; the initial number of tokens is equal to the maximum number of tokens of the token bucket.

The bandwidth control method according to claim 4, wherein the step of controlling the forwarding of the data packet according to the uplink and downlink bandwidth thresholds after the packet data network gateway receives the data packet includes:

Recording the current time of receiving the data message, if the time interval between the current time and the reference time is less than the set token update period, the packet data network gateway controls the data according to the current token bucket parameter. Forwarding of the packet; if not less than, the packet data network gateway updates parameters related to forwarding the data packet in the token bucket, and modifies the number of tokens in the token bucket.

The bandwidth control method according to claim 5, wherein the step of updating, in the packet data network gateway, the parameters related to the forwarding of the data packet in the token bucket comprises:

Replenishing the current number of tokens in the token bucket according to a specified rate while updating the initial reference time to the current time; the specified rate is equal to the maximum number of tokens added during the token update period; The number of tokens is equal to the time interval multiplied by the specified rate. If the number of tokens after the supplement exceeds the maximum number of tokens, the maximum number of tokens in the token bucket is taken as the current number of tokens.

The bandwidth control method according to claim 5, wherein the number of tokens that each of the data packets needs to consume is equal to the number of bytes of the data packet, and the packet data network gateway is based on the current token bucket. The step of controlling the forwarding of the data packet by the parameter includes:

When the number of tokens in the token bucket is not less than the number of bytes of the data packet, the data packet is allowed to pass and the number of tokens in the token bucket is subtracted from the number of bytes of the data packet. If it is less than, the data message will not be allowed to pass.

8. A bandwidth control apparatus, configured in a packet data network gateway, wherein the bandwidth control apparatus comprises:

a receiving module, configured to: receive a user to send a service quality to a packet data network gateway The activation request of the quantity parameter, and receiving the data message sent by the user;

a calculation module, configured to: after the packet data network gateway receives the activation request carrying the QoS parameter, calculate an uplink and downlink bandwidth threshold according to the QoS parameter; and the control module is configured to: After receiving the data packet, the packet data network gateway controls the forwarding of the data packet according to the uplink and downlink bandwidth thresholds;

The sending module is configured to: send an activation response to the user, and carry the quality of service parameter in the activation response.

9. The bandwidth control apparatus according to claim 8, wherein the bandwidth control apparatus further comprises: a negotiation module, which is configured to:

Negotiating quality of service parameters;

After the packet data network gateway receives the activation request carrying the QoS parameter, the QoS parameter is negotiated with the QoS parameter associated with the access point name configured in the network management; or the activation is performed. The quality of service parameter carried in the request is negotiated with the quality of service parameter associated with the access point name configured in the network management and the quality of service parameter in the policy and charging function entity.

10. The bandwidth control device according to claim 9, wherein

The calculating module is further configured to: calculate the uplink and downlink bandwidth thresholds according to the negotiated quality of service parameters, and save in a packet data protocol context of the user.

11. The bandwidth control device according to claim 10, wherein

The control module is further configured to: initialize an uplink token bucket and a downlink token bucket of the user, to set initial token bucket parameters of the uplink token bucket and the downlink token bucket, where the token bucket parameter includes a maximum The number of tokens, the current number of tokens, the base time, the token update period, and the token update rate.

12. The bandwidth control device according to claim 10, wherein

The QoS parameter includes at least an uplink maximum bit rate and a downlink maximum bit rate; the uplink bandwidth threshold is converted according to a 3GPP protocol, and the downlink bandwidth threshold is according to a 3GPP protocol. Converting the downlink maximum bit rate into; the uplink bandwidth threshold is used as the maximum number of tokens of the uplink token bucket of the user, and the downlink zone The wide threshold is used as the maximum number of tokens in the downlink token bucket of the user; the initial number of tokens is equal to the maximum number of tokens in the token bucket.

13. The bandwidth control device according to claim 12, wherein

The control module is a token bucket algorithm execution module, and is configured as:

After receiving the data packet, the packet data network gateway records the current time of receiving the data packet;

If the time interval between the current time and the reference time is less than the set token update period, the packet data network gateway controls forwarding of the data packet according to the current token bucket parameter; if not less than, The packet data network gateway updates parameters related to forwarding the data packet in the token bucket, and modifies the number of tokens in the token bucket.

14. The bandwidth control device according to claim 13, wherein

The token bucket algorithm execution module is further configured to: supplement the current token number in the token bucket according to the specified rate, and update the initial reference time to the current time; the specified rate is equal to the token update period. The maximum number of tokens added; the number of tokens added is equal to the time interval multiplied by the specified rate. If the number of tokens after the supplement exceeds the maximum number of tokens, the maximum number of tokens in the token bucket is taken as the current number. The number of tokens.

15. The bandwidth control device according to claim 13, wherein

The control module is further configured to: the number of tokens to be consumed in each of the data packets is equal to the number of bytes of the data packet, and the number of tokens in the token bucket is not less than the number of the data packet The number of bytes of the data packet is allowed to pass and the number of tokens in the token bucket is subtracted from the number of bytes of the data packet. If the number is less than, the data packet is not allowed to pass.

A gateway, the gateway being applied to a packet data network, the gateway comprising the bandwidth control device according to any one of claims 8 to 15.

17. An evolved packet system, the evolved packet system comprising the gateway of claim 16.