TWI387278B - Cable data machine and its dynamic method for establishing service quality - Google Patents

Description

Cable data machine and its dynamic method for establishing service quality

The present invention relates to data machines, and more particularly to cable data machines and methods for dynamically establishing service quality.

In recent years, with the development of computer technology, the Internet can not only transmit data information, but also transmit voice information, and transmit voice information over the Internet through Real-time Transport Protocol (RTP).

In the prior art, when a customer terminal device (Customer Premise Equipment) is connected to a communication network by a cable modem, if the user terminal needs to establish a voice stream, it must be connected to the cable data machine. Pre-defined transport protocol, and the cable modem must provide the user terminal equipment with a reliable Quality of Service (QoS) before delivery of the voice stream, that is, provide a fixed bandwidth before transmitting The voice stream, and the user monopolizes the fixed bandwidth during the entire voice communication process, even if the user does not send any voice information, the fixed bandwidth is monopolized.

If the encrypted voice stream is transmitted, the cable modem cannot immediately determine whether it is a voice stream after receiving the encrypted voice stream, and must also use a complicated decryption algorithm for decryption, and if it is a voice stream after decryption, The quality of service is provided for the voice stream according to a predefined transport protocol, which not only increases the burden on the cable modem, but also causes the limited bandwidth resources in the cable modem to be effectively utilized.

In view of this, it is desirable to provide a cable modem that not only establishes quality of service for unencrypted voice streams, but also establishes quality of service for encrypted voice streams to increase utilization of limited bandwidth resources.

In addition, there is a need to provide a method for dynamically establishing service quality that not only establishes service quality for unencrypted voice streams, but also establishes service quality for encrypted voice streams and improves utilization of limited bandwidth resources.

The cable data machine provided by the embodiment of the present invention is used for establishing service quality for a voice stream, and includes a bandwidth prediction unit establishing module, a reading module, a determining module, a bandwidth allocation module, and an updating module. The bandwidth prediction unit establishing module is configured to establish, according to the received packet information, a bandwidth prediction unit for a similar packet having the same source address, destination address, and packet size, where the bandwidth prediction unit includes a source address of the same packet. Fields such as destination address, packet size, traffic, and service quality. The traffic field value dynamically changes according to the actual traffic of the same packet. The reading module is used to periodically read the bandwidth prediction unit. The determining module is configured to determine whether the traffic field value in the bandwidth prediction unit is greater than a preset threshold, and when greater than the preset threshold, determine whether the acceleration of the traffic is zero, and at the traffic When the acceleration is zero, it is determined whether the service quality field in the bandwidth prediction unit stores fixed bandwidth information. The bandwidth allocation module is configured to allocate a fixed bandwidth and store the service quality field in the bandwidth prediction unit when the determining module determines that the quality of service field in the bandwidth prediction unit does not store fixed bandwidth information. in. The update module is configured to: when the determining module determines that the service quality field in the bandwidth prediction unit stores fixed bandwidth information, update the traffic and store the bandwidth in the bandwidth prediction list. The fixed traffic information is updated in the traffic field of the meta, and stored in the service quality field of the bandwidth prediction unit.

The method for dynamically establishing service quality provided by the embodiment of the present invention is used to establish service quality for a voice stream, and the method includes the following steps: receiving packet information into a similar packet having the same source address, destination address, and packet size, and establishing a bandwidth. a prediction unit, wherein the bandwidth prediction unit includes a source address, a destination address, a packet size, a traffic, and a service quality of the same packet, and the traffic field value dynamically changes according to the actual traffic of the same packet; a bandwidth prediction unit; determining whether the traffic field value in the bandwidth prediction unit is greater than a preset threshold; if the traffic field value is greater than the preset threshold, determining whether the acceleration of the traffic is zero; If the acceleration of the traffic is zero, it is determined whether the service quality field in the bandwidth prediction unit stores fixed bandwidth information; and if the quality of service field in the bandwidth prediction unit does not store fixed bandwidth information, A fixed bandwidth is then allocated and stored in the quality of service field of the bandwidth prediction unit.

The above and many advantages of the invention will be readily apparent from the following detailed description of the preferred embodiments.

Referring to FIG. 1, an application environment and a structural diagram of an embodiment of a cable modem 20 of the present invention are shown. In this embodiment, a Customer Premise Equipment (CPE) 10 is connected to the communication network 30 by a cable data machine 20, wherein the user terminal device 10 can be a notebook computer or a personal digital assistant (Personal Digital Assistant). ), personal computer (Personal) Computer) and so on.

In the present embodiment, the cable data machine 20 includes a bandwidth prediction unit establishing module 202, a reading module 204, a determining module 206, a bandwidth allocation module 208, and an update module 210.

The bandwidth prediction unit establishing module 202 is configured to establish a Bandwidth Prediction Unit (BPU), and store the complex BPU in the BPU list, where the BPU information is established according to the received packet header information. The packet includes a packet source IP address, a packet destination IP address, a packet size, a flow rate, and a quality of service (QoS) field. The field values are dynamically changing.

In this embodiment, the bandwidth prediction unit establishing module 202 is further configured to receive a packet transmitted in the communication network, including a voice packet and a data packet, where the voice packet includes an unencrypted voice packet and an encrypted voice packet, and the communication network is in the communication network. The transmitted packet consists of a packet header and a content. The packet header includes a packet source IP address, a packet destination IP address, and a packet size. The source IP address is used to indicate the IP address of the packet to be sent. The destination IP address is used to indicate the IP address of the received packet, and the packet size is used to indicate a byte (Byte) included in the packet, and the content includes the transmitted information part. In the actual communication network, since the encrypted voice stream composed of the encrypted voice packet can also be transmitted, the encrypted voice packet is not encrypted for the header portion, only the content portion is encrypted, and the header portion of the encrypted voice packet is unencrypted. The header part of the voice packet is the same, including the packet source IP address, the packet destination IP address, and the packet. Fields such as size.

In this embodiment, the bandwidth prediction unit establishing module 202 is further configured to determine whether the size of the received packet matches the voice packet size specified in a Real-time Transport Protocol (RTP). In this embodiment, the voice packet size specified by different standards under the RTP protocol is different. For example, the voice packet size specified in the G.711 standard is 200 bytes. In this implementation manner, by reading the information of the packet size field in the packet header, it is determined whether the size of the received packet matches the voice packet size specified by a certain standard under the RTP protocol adopted by itself, and if it is determined that the packet is received, If the size of the packet matches the size of the voice packet specified, it indicates that the received packet may be a voice packet. If it is determined that the size of the received packet does not match the size of the specified voice packet, it indicates that the received packet is received. The packet cannot be a voice packet, and the packet is sent directly at this time.

In this embodiment, the bandwidth prediction unit establishing module 202 is further configured to determine whether the packet matches the stored BPU information when the size of the received packet matches the specified voice packet size. In this embodiment, by reading the three sets of field information of the packet source IP address, the packet destination IP address, and the packet size in the packet header, it is determined whether the BPU information is matched with the stored BPU information. When the packet source IP address, the packet destination IP address, and the packet size match the BPU information in the BPU list, it can be determined that the packet matches the stored BPU information, otherwise, if any one does not match, It is determined that the packet does not match the stored BPU information.

When the packet is judged to match the stored BPN information, the counter is started. To update the traffic of the same packet that has received the same source address, destination address, and packet size. In this embodiment, if it is determined that the packet matches the stored BPU information, it indicates that the BPU list already stores the information of the BPU. At this time, the update receives the same source address, destination address, and packet size. The number of similar packets is calculated by calculating the flow rate. For example, when 10 packets of the same type with the same source address, destination address, and packet size are received in one second, the traffic is 10 packets per second. In the actual application, the communication network traffic value may change or may not be the same. In this embodiment, the number of received similar packets is updated at any time to dynamically monitor the traffic information.

When it is determined that the packet does not match the stored BPU information, a BPU is newly established and stored according to the source address, the destination address, and the packet size information of the received packet, wherein the BPU includes the source address of the same packet, The destination address, packet size, traffic, and service quality fields, and the traffic field value dynamically changes according to the actual traffic of the same packet.

In this embodiment, the BPU stored in the BPU list for the first time only includes three groups of fields: a packet source IP address, a packet destination IP address, and a packet size, and the traffic is provided only during the next read cycle. The fixed bandwidth is stored in the traffic field and service quality field in the corresponding BPU. Therefore, in this embodiment, not the packet source IP address field bit, the packet destination IP address field bit, the packet size field, the traffic field, and the service quality field on each BPU are stored with data. News. For example, the BPU stored in the BPU list for the first time stores only the data information of the packet source IP address, the packet destination IP address, and the packet size, and the traffic field and service therein. There is no information stored in the quality field.

In this embodiment, the establishment of the BPU list is a dynamic process. In this embodiment, the service quality of the received packet stream is dynamically provided by directly using the BPU list, and the codec is not required for the encrypted voice stream transmitted on the communication network. The device has a complex decryption algorithm to decrypt the encrypted voice packet to determine whether to establish a quality of service for the voice stream.

The reading module 204 is configured to periodically read BPU information from the BPU list. In this embodiment, each BPU includes information of a traffic field, and is used to indicate the same type of packets received by the same source IP address, destination IP address, and packet size per second in the current state. Number, where the traffic field value in the BPU list is dynamically changed. The reading module 204 periodically reads all BPU information from the BPU list, and the set cycle time ensures that the BPU information in all BPU lists is read in the cycle.

The determining module 206 is configured to determine whether the traffic field value in the BPU is greater than a preset threshold, and when the threshold is greater than a preset threshold, determine whether the acceleration of the traffic is zero, and when the acceleration of the traffic is zero, determine Whether the service quality field in the BPU stores fixed bandwidth information.

In this embodiment, if the traffic field value in the BPU is less than a preset threshold, it indicates that the received packet flow does not meet the standard of the voice flow under the RTP protocol. In practical applications, the threshold value of the cable modem 20 is different under different standards. For example, under the G.711 standard, the voice stream transmission speed is 64 kbps, and the preset threshold is 64 kbps. When the received packet flow rate is less than 64 kbps, the determining module 206 determines that the packet flow is not a voice stream, and reads the next BPU resource from the BPU list. News.

In this embodiment, when the traffic field value in the BPU is greater than the preset threshold, it is not determined that the received packet flow is a voice stream, and the determining module 206 also needs to determine whether the acceleration of the traffic is zero. In this embodiment, the traffic information stored in the BPU list is dynamically changed. If the number of similar packets having the same source IP address, destination IP address, and packet size is 20 in the first second, If the number of packets of the same type with the same source IP address, destination IP address, and packet size received in the second second is also 20, it can be judged that the acceleration of the traffic is zero, but if it is received in the second second When the number of similar packets having the same source IP address, destination IP address, and packet size is 30, it can be determined that the acceleration of the traffic is not zero.

In practical applications, the transmission of voice streams under the RTP protocol has the characteristics of equal rate transmission, that is, the traffic of the voice stream is constant. In this embodiment, the time interval for determining whether the acceleration is zero is 2 seconds, that is, determining the same type of packets with the same source IP address, destination IP address, and packet size received in the first second and the second second. Whether the numbers are the same. If they are the same, it indicates that the acceleration is zero, which is consistent with the characteristics of the voice stream transmission under the RTP protocol. If it is not the same, it indicates that the received packet stream does not meet the characteristics of the voice stream under the RTP protocol. The BPU list reads the next BPU information. In other embodiments, it may be determined whether the acceleration is zero or not.

In the present embodiment, when it is determined that the acceleration of the flow rate is zero, the determination module 206 determines whether the service quality field in the BPU stores fixed bandwidth information. In the present embodiment, when it is determined that the acceleration of the flow rate is zero, It indicates that the received packet flow is a voice stream. At this time, if the service quality field in the BPU stores fixed bandwidth information, it indicates that the packet flow corresponding to the BPU has service quality, and if the service quality in the BPU If the field does not store fixed bandwidth information, it indicates that the packet stream corresponding to the BPU does not have service quality.

The bandwidth allocation module 208 is configured to allocate a fixed bandwidth and store it in the service quality field of the BPU when the determining module 206 determines that the quality of service field in the BPU does not store fixed bandwidth information. In the present embodiment, the cable data machine 20 provides a fixed bandwidth according to the traffic of the received voice stream, and stores the fixed bandwidth information in the service quality field of the BPU. For example, the traffic of the voice stream is 64 kbps. The cable modem will then provide a fixed bandwidth of at least 64 kbps to the voice stream to establish quality of service and store at least 64 kbps of fixed bandwidth information in the BPU's Quality of Service field to indicate that the quality of service has been established.

The update module 210 is configured to: when the determining module 206 determines that the service quality field in the BPU stores fixed bandwidth information, update the traffic and store the traffic in the traffic field of the BPU, and update the fixed bandwidth information according to the updated traffic. And stored in the service quality field of the BPU. In this embodiment, for example, the traffic of the voice stream is increased from 64 kbps to 128 kbps, and the service quality of the original 64 kbps fixed bandwidth is obviously not satisfactory, and the cable modem provides a fixed frequency of at least 128 kbps according to the new traffic information. The bandwidth is given to the new voice stream. Similarly, if the traffic of the voice stream is reduced from 64 kbps to 0 kbps, the cable modem does not provide a fixed bandwidth based on the new traffic information. In this embodiment, the corresponding bandwidth is dynamically provided according to the mechanism for dynamically monitoring voice stream traffic to improve service quality. .

In the embodiment, the determining module 206 is further configured to determine whether the packet and the bandwidth prediction unit establish the BPU information in the module 202 when the received packet size matches the voice packet size specified in the RTP protocol. Matching, and when the packet does not match the stored BPU information, the field information such as the packet source address, the packet destination address, and the packet size of the packet is stored in the BPU list. The update module 210 is further configured to update the received number of similar packets having the same source IP address, destination IP address, and packet size when the received packet matches the stored BPU information. The reading module 204 is further configured to continue reading the next BPU from the BPU list when all BPU information in the BPU list is not read in the current state. In the current state, if all the BPU information in the BPU list has been read, the reading module 204 ends the current reading cycle and waits for the next reading cycle.

Referring to FIG. 2, a flow chart of a method for dynamically establishing service quality according to an embodiment of the cable data machine of the present invention is shown. In the present embodiment, the method is implemented by the various modules of the cable modem 20 of FIG.

In step S200, the bandwidth prediction unit establishing module 202 of the cable data machine 20 establishes and stores a bandwidth prediction unit (BPU) list, wherein the BPU list includes a plurality of BPU information, and each BPU includes The field of the packet source IP, the packet destination IP, the packet size, the flow rate, and the quality of service (QoS). In this embodiment, the bandwidth prediction unit establishing module 202 establishes and stores a specific BPU list. The method is shown in Figure 3.

Please refer to FIG. 3, which is a detailed flowchart of the step S200 bandwidth prediction unit establishing module 202 of FIG. 2 for establishing and storing a BPU list.

In step S300, receiving a packet transmitted in the communication network, including a voice packet and a data packet, wherein the voice packet includes an unencrypted voice packet and an encrypted voice packet, and the packet transmitted in the communication network is composed of a packet header and a content, the packet header The packet includes an IP address of the packet source, an IP address of the packet, and a packet size. The source IP address is used to indicate the IP address of the packet, and the destination IP address is used to indicate the IP address of the packet. The address, the packet size is used to indicate how many bytes (Byte) the packet includes, and the content includes the transmitted information part. In the actual communication network, since the encrypted voice stream composed of the encrypted voice packet can also be transmitted, the encrypted voice packet is not encrypted for the header portion, only the content portion is encrypted, and the header portion of the encrypted voice packet is not The header part of the encrypted voice packet is the same, including the source IP address of the packet, the IP address of the packet, and the size of the packet.

In step S302, it is determined whether the size of the packet matches the voice packet size specified in the Real-time Transport Protocol (RTP). In this embodiment, the voice packet size specified by different standards under the RTP protocol is different. For example, the voice packet size specified in the G.711 standard is 200 bytes. In this embodiment, by reading the information of the packet size field in the packet header, it is determined whether the size of the packet matches the voice packet size specified by a certain standard under the RTP protocol used by itself, and if the size of the packet is determined If the specified voice packet size matches, it indicates that the received packet may be If the size of the packet does not match the size of the voice packet, it indicates that the received packet cannot be a voice packet. In this case, the packet is directly sent out, and the process returns to step S300 to receive. New packet.

When it is determined that the size of the packet matches the specified voice packet size, then in step S304, it is determined whether the packet matches the stored BPU information. In this embodiment, by reading the three sets of field information of the packet source IP address, the packet destination IP address, and the packet size in the packet header, it is determined whether the BPU information is matched with the stored BPU information. When the packet source IP address, the packet destination IP address, and the packet size match the BPU information in the BPU list, the packet can be judged to match the stored BPU information. Otherwise, if any one does not match, It is judged that the packet does not match the stored BPU information.

When it is determined that the packet matches the stored BPU information, then in step S306, the counter is started to update the traffic of the same type of packet received with the same source address, destination address, and packet size. In this embodiment, if it is determined that the packet matches the stored BPU information, it indicates that the BPU list already stores the information of the BPU. At this time, the update receives the same source address, destination address, and packet size. The number of similar packets is calculated by calculating the flow rate. For example, when 10 packets of the same type with the same source address, destination address, and packet size are received in one second, the traffic is 10 packets per second. In the actual application, the communication network traffic value may change or may not be the same. In this embodiment, the number of received similar packets is updated at any time to dynamically monitor the traffic information.

When it is determined that the packet does not match the stored BPU information, then in step S308, a BPU is newly established and stored according to the source address, the destination address, and the packet size information of the received similar packet, wherein the BPU includes the same type. The source address, destination address, packet size, traffic, and service quality of the packet, and the traffic field value dynamically changes according to the actual traffic of the same packet.

In this embodiment, if the header information of the packet, such as the packet source IP address, the destination IP address, and the packet size field information, is read, and the matching BPU is not found in the stored BPU list. In the information, the packet source IP address, the destination IP address, and the packet size field information of the packet are stored in the BPU list to create a new BPU. In this embodiment, the BPU that is first stored in the BPU list is only used. The three fields of the packet source IP address, the packet destination IP address, and the packet size are stored in the traffic field and the service quality of the corresponding BPU only when the next read cycle is performed. Fields, therefore, in this embodiment, not the packet source IP address field bit, the packet destination IP address field bit, the packet size field, the traffic field, and the service quality field on each BPU Stored with information. For example, the BPU stored in the BPU list for the first time stores only the data information of the packet source IP address, the packet destination IP address, and the packet size, and the traffic field and the service quality field do not store the data information.

In this embodiment, the establishment of the BPU list is a dynamic process. Each time the cable data machine receives a packet, the process shown in FIG. 3 is executed. When the above conditions are met, a new BPU information is established and the location is updated. A list of stored BPUs.

Referring back to FIG. 2, in step S202, the reading module 204 reads the BPU from the BPU list. In this embodiment, the traffic is used to indicate the number of packets of the same type with the same source IP address, destination IP address, and packet size received per second in the current state, and the traffic field value in the BPU list. Dynamically changing, the reading module 204 periodically reads all BPU information from the BPU list, and the set cycle time ensures that the BPU information in all BPU lists is read in this cycle, and is read in the next one. During the cycle, the updated BPU list is read.

In step S204, the determining module 206 determines whether the value of the traffic field read from the BPU is greater than a preset threshold. In this embodiment, if the traffic field value read from the BPU is less than a preset threshold, it indicates that the received packet flow does not meet the standard of voice flow under Real-time Transport Protocol (RTP). In practical applications, the threshold value of the cable modem is different under different standards. For example, under the G.711 standard, the voice stream transmission speed is 64 kbps, and the preset threshold is 64 kbps. When the received packet flow rate is less than 64 kbps, it can be determined that the packet flow is not a voice flow, and the process returns to step S202 to read the next BPU information from the BPU list.

When the traffic field value read from the BPU is greater than the preset threshold, it is not determined that the received packet flow is a voice flow, then in step S206, the determination module 206 determines whether the acceleration of the traffic is zero. In this embodiment, the traffic information stored in the BPU list is dynamically changed. If the number of similar packets having the same source IP address, destination IP address, and packet size is 20 in the first second, Received the same number of packets of the same source IP address, destination IP address, and packet size in the second second. If it is 20, it can be judged that the acceleration of the traffic is zero. However, if the number of similar packets receiving the same source IP address, destination IP address, and packet size is 30 in the second second, it can be judged that The acceleration of the flow is not zero.

In practical applications, the transmission of voice streams under the RTP protocol has the characteristics of equal rate transmission, that is, the traffic of the voice stream is constant. In this embodiment, the time interval for determining whether the acceleration is zero is 2 seconds, that is, determining the same type of packets with the same source IP address, destination IP address, and packet size received in the first second and the second second. Whether the numbers are the same, if they are the same, it indicates that the acceleration is zero, which is consistent with the characteristics of the voice stream transmission under the RTP protocol. If not, it indicates that the received packet stream does not meet the characteristics of the voice stream under the RTP protocol. Then, it returns to step S202 to read the next BPU information from the BPU list. In other embodiments, it may be determined whether the acceleration is zero or not.

When it is determined that the acceleration of the flow is zero, then in step S208, the determination module 206 determines whether the service quality field in the BPU stores fixed bandwidth information. In this embodiment, when it is determined that the acceleration of the traffic is zero, it indicates that the received packet flow is a voice stream. At this time, the determining module 206 determines whether the service quality field in the BPU information stores the fixed bandwidth information. If the fixed bandwidth information is stored, it is judged that there is service quality, and if the fixed bandwidth information is not stored, it is judged that there is no service quality.

If the determining module 206 determines that the service quality field in the BPU information does not store the fixed bandwidth information, then as shown in step S210, at this time, the bandwidth allocation module 208 allocates a fixed bandwidth to the voice stream to establish the service quality. And store the fixed bandwidth information in the service quality field of the BPU. For example, language The stream traffic is 64 kbps, then the cable modem will provide a fixed bandwidth of at least 64 kbps to the voice stream to establish quality of service, and store at least 64 kbps of fixed bandwidth information in the BPU's Quality of Service field to indicate that Established service quality.

If the determining module 206 determines that the service quality field in the BPU information stores the fixed bandwidth information, then in step S212, the update module 210 updates the traffic information and stores it in the traffic field of the BPU. In this embodiment, for example, in step S206, if the determination module 206 determines that the acceleration of the traffic is not zero, that is, the same source IP address and destination IP address are received in the first second and the second second. When the number of packets of the same packet size is different, it indicates that the flow rate of the packet flow has changed. At this time, since the acceleration of the traffic is not equal to zero, the process returns to step S202, and the reading module 204 reads from the BPU list. A BPU information, if the number of similar packets with the same source IP address, destination IP address, and packet size received in the first and second seconds is the same in the next read cycle, it indicates that the change is The acceleration of the traffic is zero. At this time, because the service quality is present in the BPU information, only the traffic information changes. In this embodiment, the traffic information in the corresponding BPU information is updated.

In step S214, the update module 210 updates the fixed bandwidth information according to the updated traffic and stores it in the service quality field of the BPU. In this embodiment, when the traffic information in the corresponding BPU information is updated, the cable data machine needs to update the service quality according to the new traffic information to provide a new fixed bandwidth to the new voice stream to ensure the service. Quality, for example, the traffic of the voice stream is increased from 64 kbps to 128 kbps. The original 64 kbps fixed bandwidth service quality obviously cannot meet the requirements. The machine provides a fixed bandwidth of at least 128 kbps to the new voice stream according to the new traffic information. Similarly, if the voice stream is reduced from 64 kbps to 0 kbps, the cable modem does not provide a fixed frequency according to the new traffic information. width. In this embodiment, the corresponding bandwidth is dynamically provided according to the mechanism for dynamically monitoring voice stream traffic to improve service quality.

In step S216, the determination module 206 determines whether all BPU information in the BPU list is read. In this embodiment, if the BPU information is not read in the BPU list, the process returns to step S202, and the reading module 204 reads the next BPU information from the BPU list, if all the BPU information in the BPU list is If it has been read, the current read cycle is ended and the next read cycle is awaited.

The cable data machine and the method for dynamically establishing the service quality provided by the embodiments of the present invention dynamically establish and store a list of bandwidth prediction units by dynamically monitoring traffic information of the packet flow, and dynamically establish service quality for the communication network. The encrypted voice stream transmitted on the road does not require the codec to have a complex decryption algorithm to decrypt the encrypted packet to determine whether to establish service quality for the voice stream. The embodiment of the present invention only needs to provide the service quality for the unencrypted voice stream according to the information stored in the bandwidth prediction unit list, and can also provide the service quality for the encrypted voice stream, and dynamically change the frequency. The wide prediction unit list also increases the utilization of finite bandwidth resources in the cable modem.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

10‧‧‧User terminal equipment

20‧‧‧ Cable Data Machine

202‧‧‧Bandwidth prediction unit building module

204‧‧‧Reading module

206‧‧‧Judgement module

208‧‧‧Bandwidth allocation module

210‧‧‧Update Module

30‧‧‧Communication network

1 is an application environment and a structural diagram of an embodiment of a cable data machine of the present invention.

2 is a flow chart of a method for dynamically establishing service quality according to an embodiment of a cable data machine of the present invention.

FIG. 3 is a detailed flowchart of establishing and storing a BPU list in step S200 of FIG. 2 according to the present invention.

10‧‧‧User terminal equipment

20‧‧‧ Cable Data Machine

202‧‧‧Bandwidth prediction unit building module

204‧‧‧Reading module

206‧‧‧Judgement module

208‧‧‧Bandwidth allocation module

210‧‧‧Update Module

30‧‧‧Communication network

Claims (21)

A cable data machine for establishing service quality for a voice stream, comprising: a bandwidth prediction unit establishing module, configured to establish a frequency for a similar packet having the same source address, destination address, and packet size according to the received packet information. a wide prediction unit, the bandwidth prediction unit includes a source address, a destination address, a packet size, a traffic, and a service quality field of the same type of packet, and the traffic field value dynamically changes according to the actual traffic of the same type packet; the reading module, The method is configured to periodically read the bandwidth prediction unit, and the determining module is configured to determine whether the traffic field value in the bandwidth prediction unit is greater than a preset threshold, and is greater than the preset threshold. Determining whether the acceleration of the flow is zero, and determining whether the service quality field in the bandwidth prediction unit stores fixed bandwidth information when the acceleration of the flow is zero; and the bandwidth allocation module is configured to: When the determining module determines that the quality of service field in the bandwidth prediction unit does not store fixed bandwidth information, allocates a fixed bandwidth and stores the service in the bandwidth prediction unit. Quality field. The cable data machine of claim 1, wherein the bandwidth prediction unit establishing module is further configured to establish the plurality of bandwidth prediction units as a bandwidth prediction unit list. The cable data machine of claim 2, further comprising an update module, configured to update when the determining module determines that the service quality field in the bandwidth prediction unit stores fixed bandwidth information. The traffic is stored in the traffic field of the bandwidth prediction unit, and the fixed bandwidth information is updated according to the updated traffic and stored in the service quality field of the bandwidth prediction unit. The cable data machine of claim 3, wherein the reading mode The group is further configured to read the next bandwidth prediction unit from the bandwidth prediction unit list when the traffic field value is less than the preset threshold or the acceleration of the traffic is not zero. The cable data machine of claim 4, wherein the reading module is further configured to determine whether all the bandwidth prediction unit information in the bandwidth prediction unit list is read, and if not, Then, the next bandwidth prediction unit is continuously read from the bandwidth prediction unit list, and when both have been read, the current read cycle is ended, and the next read cycle is awaited. The cable data machine of claim 1, wherein the bandwidth prediction unit establishing module is further configured to receive a packet transmitted in the communication network, the packet includes a header portion and a content portion, and the packet header portion includes a packet source a address, a packet destination address, and a packet size field, wherein the bandwidth prediction unit establishing module is further configured to read the packet header information and determine whether the packet size matches the voice packet size specified by the instant delivery protocol . The cable data machine of claim 6, wherein the bandwidth prediction unit establishing module is further configured to determine whether the packet is different when the packet size matches the voice packet size specified by the instant delivery protocol. The bandwidth prediction unit establishes that the bandwidth prediction unit information in the module matches, and when the packet does not match the stored bandwidth prediction unit information, according to the source address, the destination address, and the packet size of the packet. Create a new bandwidth prediction unit. The cable data machine of claim 6, wherein the bandwidth prediction unit establishing module is further configured to directly send the packet size when the packet size does not match the voice packet size specified in the instant delivery protocol. Packet and prepare to receive the next packet. The cable data machine of claim 1, wherein the bandwidth prediction unit establishing module further comprises a counter for the packet and the stored When the bandwidth prediction unit information matches, the counter is started to update the traffic of the same type of packet. The cable data machine of claim 1, wherein the voice stream is composed of a plurality of encrypted voice packets, the encrypted voice packets including an unencrypted header and encrypted content, the unencrypted header including a packet Source address, packet destination address, and packet size field. A method for dynamically establishing service quality for establishing service quality for a voice stream, the method comprising: receiving a packet and establishing a bandwidth prediction unit for a similar packet having the same source address, destination address, and packet size, wherein the bandwidth is The prediction unit includes a source address, a destination address, a packet size, a traffic, and a service quality field of the same packet, and the traffic field value dynamically changes according to the actual traffic of the same packet; the bandwidth prediction unit is read; and the bandwidth is determined. Whether the value of the traffic field in the prediction unit is greater than a preset threshold; if the value of the traffic field is greater than the preset threshold, determining whether the acceleration of the flow is zero; if the acceleration of the flow is zero, Determining whether the service quality field in the bandwidth prediction unit stores fixed bandwidth information; and if the quality of service field in the bandwidth prediction unit does not store fixed bandwidth information, assigning a fixed bandwidth and storing the The bandwidth prediction unit is in the service quality field. The method for dynamically establishing quality of service as described in claim 11, wherein the bandwidth prediction unit is stored in a bandwidth prediction unit list, the bandwidth prediction unit list including complex bandwidth prediction unit information. The method for dynamically establishing service quality according to claim 12, further comprising: if the service quality field in the bandwidth prediction unit stores fixed bandwidth information, updating the traffic and storing the bandwidth in the bandwidth Forecast the unit's traffic field. The method for dynamically establishing service quality according to claim 13 of the patent application, further comprising: updating the fixed bandwidth information according to the updated traffic and storing in the service quality field of the bandwidth prediction unit. The method for dynamically establishing service quality, as described in claim 14, further comprising: if the traffic field value is less than the preset threshold, or the acceleration of the traffic is not zero, then the bandwidth prediction unit The next bandwidth prediction unit is read in the list. The method for dynamically establishing quality of service as described in claim 12, further comprising: determining whether all of the bandwidth prediction unit information in the bandwidth prediction unit list is read; and if all the bandwidth prediction unit lists After the bandwidth prediction unit information is not read, the next bandwidth prediction unit continues to be read from the bandwidth prediction unit list. The method for dynamically establishing service quality according to claim 16 of the patent application, further comprising: if all the bandwidth prediction unit information in the bandwidth prediction unit list has been read, ending the current reading cycle, waiting The next read cycle. The method for dynamically establishing quality of service as described in claim 12, wherein the step of establishing a bandwidth prediction unit comprises: receiving a packet transmitted in a communication network, the packet including a header portion and a content portion, wherein the header portion Including the packet source address and the packet destination address And a packet size field; reading the packet header information and determining whether the packet size matches the voice packet size specified in the instant delivery protocol; if the packet size matches the voice packet size specified in the instant delivery protocol And determining whether the packet matches the stored bandwidth prediction unit information; and if the packet does not match the stored bandwidth prediction unit information, according to the source address, the destination address, and the packet size information of the packet. Create a new bandwidth prediction unit. The method for dynamically establishing quality of service as described in claim 18, wherein the step of establishing a bandwidth prediction unit further comprises: if the packet matches the stored bandwidth prediction unit information, starting a counter to update the same type Packet traffic. The method for dynamically establishing quality of service as described in claim 18, wherein the step of establishing a bandwidth prediction unit further comprises: if the packet size does not match the voice packet size specified in the instant delivery protocol, directly The packet is sent and ready to receive the next packet. The method for dynamically establishing quality of service as described in claim 11, wherein the voice stream is composed of a plurality of encrypted voice packets, the encrypted voice packet including an unencrypted header and encrypted content, the unencrypted header including Packet source address, packet destination address, and packet size field.