WO2019047837A1 - 一种带宽调度方法及装置 - Google Patents

一种带宽调度方法及装置 Download PDF

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Publication number
WO2019047837A1
WO2019047837A1 PCT/CN2018/104071 CN2018104071W WO2019047837A1 WO 2019047837 A1 WO2019047837 A1 WO 2019047837A1 CN 2018104071 W CN2018104071 W CN 2018104071W WO 2019047837 A1 WO2019047837 A1 WO 2019047837A1
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Prior art keywords
bandwidth
message
information
service
request message
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PCT/CN2018/104071
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English (en)
French (fr)
Inventor
郑若滨
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP18854178.3A priority Critical patent/EP3672174B1/en
Publication of WO2019047837A1 publication Critical patent/WO2019047837A1/zh
Priority to US16/809,017 priority patent/US11310780B2/en
Priority to US17/703,703 priority patent/US11792807B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/78—Architectures of resource allocation
    • H04L47/781—Centralised allocation of resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/826—Involving periods of time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0064—Arbitration, scheduling or medium access control aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0086—Network resource allocation, dimensioning or optimisation

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a bandwidth scheduling method and apparatus.
  • FIG. 1 is a schematic diagram of an existing bandwidth scheduling method.
  • the user side device sends a first bandwidth request message to the second access device, where the first bandwidth request message includes a bandwidth requirement of the user side device.
  • the second access device allocates bandwidth to the user side device according to the bandwidth requirement of the user side device.
  • the second access device sends a first bandwidth response message to the user side device, where the first bandwidth response message carries bandwidth information allocated to the user side device.
  • the user side device may send uplink data to the second access device according to the obtained bandwidth information.
  • the second access device sends a second bandwidth request message to the first access device to request a bandwidth for sending the uplink data.
  • the second bandwidth request message includes a bandwidth requirement of the second access device, and the bandwidth requirement of the second access device is a bandwidth requirement for transmitting uplink data of the user side device.
  • the first access device allocates bandwidth for the second access device.
  • the first access device sends a second bandwidth response message to the user side device, where the second bandwidth response message carries bandwidth information allocated to the second access device.
  • the second access device sends the uplink data to the first access device according to the obtained bandwidth information.
  • the user side device may be a cable modem (CM) or a user equipment (UE).
  • the second access device may be an optical network unit (ONU).
  • the first access device may be an optical line terminal (OLT).
  • DBA dynamic bandwidth allocation
  • multiple communication interactions are required, which increases the transmission delay of the uplink data.
  • the embodiment of the present application provides a bandwidth scheduling method and apparatus, which are beneficial to reducing uplink data transmission delay and improving bandwidth allocation efficiency.
  • a first aspect provides a bandwidth scheduling method, where the method includes: a bandwidth allocation apparatus receives a bandwidth request message sent by a message conversion apparatus, where the bandwidth request message includes a bandwidth requirement, where the bandwidth requirement is used to complete a service transmission. a bandwidth required by the bandwidth allocation device, according to the bandwidth requirement, to obtain the first bandwidth grant information and the second bandwidth grant information, where the first bandwidth grant information is a bandwidth corresponding to the service allocated to the user side device. Information, the second bandwidth grant information is bandwidth information corresponding to the service allocated to the second access device; the bandwidth allocation device sends a first bandwidth response message to the message conversion device, to the first The access device sends a second bandwidth response message, where the first bandwidth response message includes the first bandwidth grant information, and the second bandwidth response message includes the second bandwidth grant information.
  • the bandwidth allocation device directly allocates a corresponding bandwidth to the user equipment and the second access device according to the bandwidth request message reported by the message conversion device, and sends the first bandwidth grant information to the message conversion device.
  • the first access device sends the second bandwidth grant information.
  • the message conversion device is disposed in the second access device, or the message conversion device is disposed outside the second access device.
  • the user side device may be a CM
  • the second access device may be an ONU with a cable television cable device, and a cable modem terminal system. (cable modem termination system, CMTS) or converged cable accesss platform (CCAP).
  • CMTS complementary modem termination system
  • CCAP converged cable accesss platform
  • the user side device may be a UE
  • the second access device may be an ONU having a wireless access point (AP) function or a base station (BS) function.
  • AP wireless access point
  • BS base station
  • the first bandwidth authorization information includes at least one of first time information and first frequency information, where the first time information includes a start point of the first time slice and a length of the first time slice.
  • the first frequency information includes a center frequency of the first frequency band and a frequency width of the first frequency band, where a starting point of the first time slice is a start time of the user side device to send the service, the first time slice
  • the length of the service is the effective duration of the service sent by the user equipment
  • the first frequency band is a frequency range in which the user equipment sends the service.
  • the second bandwidth grant information includes at least one of the second time information and the second time information, where the second time information includes a start point of the second time slice and a length of the second time slice.
  • the second frequency information includes a center frequency of the second frequency band and a frequency width of the second frequency band, where the starting point of the second time slice is a start time of the second access device to send the service, and the second The length of the time slice is the effective duration of the second access device to send the service, and the second frequency band is the frequency range in which the second access device sends the service.
  • the starting point of the second time slice may be determined according to a starting point of the first time slice and a length of the first time slice, for example, a starting point of the second time slice is a starting point of the first time slice
  • the determining of the starting point of the second time slice may also consider a transmission delay generated by the user side device, that is, a starting point of the second time slice is an accumulation of the first time of the first time slice.
  • the time obtained by the length of the time slice and the transmission delay generated by the user side device is a transmission delay generated by the user side device.
  • the bandwidth request message further includes at least one of a service identifier and a priority information, where the priority information is used to identify a priority of the service, and the service identifier is used to identify the service.
  • the service identifier may be quintuple information in the bandwidth request message, and the quintuple information may be used to identify a certain service; or the service identifier may be information carried in a message body.
  • the first bandwidth response message and the second bandwidth response message are Internet Protocol (IP) protocol-based messages, or the first bandwidth response message and the second bandwidth response.
  • IP Internet Protocol
  • the message is an Ethernet encapsulated message.
  • the message header of the bandwidth request message includes a destination address, a source address, and first type information, where the destination address is an address of the bandwidth allocation device, and the source address is the message conversion device.
  • the first type information is used to indicate that the message body carries a parameter related to the bandwidth request.
  • the message body of the bandwidth request message includes the bandwidth requirement.
  • the message body of the bandwidth request message further includes at least one of a service identifier and a service type.
  • the message header of the first bandwidth response message includes a destination address, a source address, and second type information, where the source address is an address of the bandwidth allocation device, and the destination address is the message The address of the conversion device, the second type of information is used to indicate that the message body carries parameters related to bandwidth grant.
  • the message body of the first bandwidth response message includes the first bandwidth grant information.
  • the message body of the first bandwidth response message further includes at least one of a service identifier and a service type.
  • the message header of the second bandwidth response message includes a destination address, a source address, and second type information, where the source address is an address of the bandwidth allocation device, and the destination address is the message The address of the conversion device, the second type of information is used to indicate that the message body carries parameters related to bandwidth grant.
  • the message body of the second bandwidth response message includes the second bandwidth grant information.
  • the message body of the second bandwidth response message further includes at least one of a service identifier and a service type.
  • the method further includes: the message conversion apparatus receives a third bandwidth response message sent by the first access device, where the third bandwidth response message includes second bandwidth grant information.
  • the third bandwidth response message and the first bandwidth response message are based on different protocol types.
  • the second access device where the message conversion device is located may reserve bandwidth for the user side device according to the second bandwidth grant information. To further shorten the transmission delay.
  • a second aspect provides a bandwidth scheduling method, where the method includes: a message conversion apparatus receives a second bandwidth request message sent by a user equipment, where the second bandwidth request message includes a first bandwidth requirement, the first bandwidth The requirement is a bandwidth required for completing the first service transmission; the message conversion apparatus obtains a first bandwidth request message according to the second bandwidth request message, where the first bandwidth request message includes the first bandwidth requirement; The message conversion apparatus sends the first bandwidth request message to a bandwidth allocation apparatus; the message conversion apparatus receives a first bandwidth response message sent by the bandwidth allocation apparatus, where the first bandwidth response message includes first bandwidth grant information The first bandwidth granting information is bandwidth information corresponding to the first service that is allocated to the user side device; the message converting apparatus obtains a second bandwidth response message according to the first bandwidth response message, where The second bandwidth response message includes the first bandwidth grant information; the message conversion device is directed to the user side device Transmitting said second bandwidth response message.
  • the message conversion apparatus may perform protocol conversion on the second bandwidth request message from the user side device to obtain a first bandwidth request message.
  • the message switching device may no longer send the first bandwidth request message to the first access device, and trigger the bandwidth allocation device to be the user side device and the device directly by sending the first bandwidth request message to the bandwidth allocation device.
  • the second access device allocates corresponding bandwidth information, which simplifies the bandwidth allocation process of the existing message conversion device and the first access device, improves bandwidth allocation efficiency, and reduces the process of allocating bandwidth for the message conversion device to data transmission. The resulting delay.
  • the first bandwidth grant information is the same as the first bandwidth grant information in the first aspect.
  • the second bandwidth request message further includes first priority information, where the first priority information is used to identify a priority of the first service.
  • the message conversion apparatus may sort the generated new bandwidth request message and the sending order according to the level of the first priority information. If the first priority information is high, the message conversion apparatus preferentially generates the first bandwidth request message and preferentially transmits to the bandwidth allocation apparatus.
  • the first bandwidth request message further includes the first priority information. If the first priority information is high, the bandwidth allocation apparatus may preferentially process the first bandwidth request message to obtain the first bandwidth grant information and the second bandwidth grant information.
  • the second bandwidth request message further includes a first service identifier, where the first service identifier is used to identify the first service.
  • the first service identifier may be the quintuple information carried in the message header of the second bandwidth request message, or the first service identifier may be the identifier carried in the message body of the second bandwidth request message.
  • the first bandwidth request message further includes the first service identifier. If the service identifier is represented by the quintuple information in the message header, the quintuple included in the first bandwidth request message is not exactly the same as the quintuple included in the second bandwidth request message, but the first bandwidth is The quintuple included in the request message is still available to represent the first service identity.
  • the message body of the first bandwidth request message may be the same as the message body of the second bandwidth request message, that is, the first service identifier may also be carried in the message body of the first bandwidth request message.
  • the first bandwidth request message is based on the same protocol as the first bandwidth response message, and the first bandwidth request message is based on an IP protocol or an Ethernet protocol;
  • the second bandwidth request message is The first bandwidth request message is based on a different protocol, and the second bandwidth response message is based on the same protocol as the second bandwidth request message.
  • the message header of the first bandwidth request message is different from the message header of the second bandwidth request message, and the message body of the first bandwidth request message is the same as the message body of the second bandwidth request message.
  • the message header of the first bandwidth response message is different from the message header of the second bandwidth response message, and the message body of the first bandwidth response message is the same as the message body of the second bandwidth response message.
  • the first bandwidth response message further includes second bandwidth grant information, where the second bandwidth grant information is bandwidth information corresponding to the second service that is allocated to the user side device
  • the method further includes: the message conversion device receiving a second bandwidth requirement sent by the user side device, where the second bandwidth requirement is a bandwidth required for completing the second service transmission; the message conversion device a second bandwidth requirement is added to the first bandwidth request message; the message conversion device acquires the second bandwidth grant information from the first bandwidth response message; the message conversion device sends the user bandwidth device The second bandwidth grant information.
  • the second bandwidth requirement may be carried in a message body of the second bandwidth request message.
  • the second bandwidth grant information may be carried in a message body of the second bandwidth response message.
  • a bandwidth allocation apparatus in a third aspect, includes:
  • a receiving unit configured to receive a bandwidth request message sent by the optical network module message conversion apparatus, where the bandwidth request message includes a bandwidth requirement, where the bandwidth requirement is a bandwidth required for completing a service transmission;
  • a calculating unit configured to calculate, according to the bandwidth requirement, the first bandwidth grant information and the second bandwidth grant information, where the first bandwidth grant information is bandwidth information corresponding to the service that is allocated to the user side device,
  • the second bandwidth grant information is bandwidth information corresponding to the service allocated to the second access device, where the second access device is a device where the message conversion device is located;
  • a sending unit configured to send a first bandwidth response message to the message switching device, and send a second bandwidth response message to the first access device, where the first bandwidth response message includes the first bandwidth grant information, where The second bandwidth response message includes the second bandwidth grant information.
  • the bandwidth request message further includes at least one of a service identifier and a priority information, where the priority information is used to identify a priority of the service, and the service identifier is used to identify the service.
  • the first bandwidth grant information is the same as the first bandwidth grant information in the first aspect.
  • the second bandwidth grant information is the same as the second bandwidth grant information in the second aspect.
  • a fourth aspect provides a message conversion apparatus, where the message conversion apparatus includes:
  • a first receiving unit configured to send, by the user equipment, a second bandwidth request message, where the second bandwidth request message includes a first bandwidth requirement, where the first bandwidth requirement is a bandwidth required for completing the first service transmission;
  • a first converting unit configured to obtain a first bandwidth request message according to the second bandwidth request message, where the first bandwidth request message includes the first bandwidth requirement
  • a first sending unit configured to send the first bandwidth request message to a bandwidth allocation apparatus
  • a second receiving unit configured to receive a first bandwidth response message sent by the bandwidth allocation apparatus, where the first bandwidth response message includes first bandwidth grant information, where the first bandwidth grant information is allocated to the user side device Bandwidth information corresponding to the first service;
  • a second conversion unit configured to obtain a second bandwidth response message according to the first bandwidth response message, where the second bandwidth response message includes the first bandwidth grant information
  • a second sending unit configured to send the second bandwidth response message to the user side device.
  • the first bandwidth request message further includes at least one of a first service identifier and a first priority information, where the first priority information is used to identify the first service.
  • the first service identifier is used to identify the first service.
  • the first bandwidth request message is based on the same protocol as the first bandwidth response message, and the first bandwidth request message is based on an IP protocol or an Ethernet protocol;
  • the second bandwidth request message and the first bandwidth request message are based on different protocols, and the second bandwidth response message and the second bandwidth request message are based on the same protocol.
  • the first bandwidth response message further includes second bandwidth grant information, where the second bandwidth grant information is bandwidth information corresponding to the second service that is allocated to the user side device,
  • the first receiving unit is further configured to receive a second bandwidth requirement sent by the user side device, where the second bandwidth requirement is a bandwidth required for completing the second service transmission;
  • the first converting unit is further configured to add the second bandwidth requirement to the first bandwidth request message
  • the second converting unit is further configured to obtain the second bandwidth grant information from the first bandwidth response message
  • the second sending unit is further configured to send the second bandwidth grant information to the user side device.
  • the first bandwidth request message in the fourth aspect is the same as the first bandwidth message in the second aspect
  • the second bandwidth request message in the fourth aspect is the same as the second bandwidth request message in the second aspect
  • the first bandwidth response message of the fourth aspect is the same as the first bandwidth response message of the second aspect
  • the second bandwidth grant information of the fourth aspect is the same as the second bandwidth grant information of the second aspect.
  • the message conversion device is disposed in the second access device, or the message conversion device is disposed outside the second access device.
  • the bandwidth information corresponding to a certain service in any implementation manner of the application is the bandwidth information required for transmitting the service.
  • the user side device is a device disposed on the user side capable of communicating with the second access device.
  • the fifth aspect provides a bandwidth scheduling system, where the system includes the bandwidth allocation apparatus provided by any one of the third aspect or the third aspect, and any one of the fourth aspect or the fourth aspect.
  • the message conversion device provided by the implementation.
  • a bandwidth allocation apparatus comprising a processor, a memory, and a communication interface.
  • the processor, the memory, and the communication interface are communicable via a communication bus.
  • the processor can read the instructions from the memory to implement the method steps included in any one of the foregoing first aspect or the first aspect.
  • a message conversion apparatus comprising a processor, a memory, and a communication interface.
  • the processor, the memory, and the communication interface are communicable via a communication bus.
  • the processor can read the instructions from the memory to implement the method steps included in any one of the second aspect or the second aspect.
  • the eighth aspect provides a second access device, where the second access device includes the message conversion apparatus provided in any one of the foregoing fourth aspect or the fourth aspect.
  • the second access device further includes: a third receiving unit and a bandwidth configuration unit, where the third receiving unit is configured to receive a third bandwidth response message sent by the first receiving device, where The third bandwidth response message includes third bandwidth grant information, the third bandwidth grant information is bandwidth information corresponding to the first service that is allocated to the second access device, and the bandwidth configuration unit is configured to use, according to the The third bandwidth grant information completes the bandwidth configuration.
  • the third bandwidth grant information is the same as the second bandwidth grant information in the first aspect or any one of the implementation manners of the first aspect.
  • a first access device in a ninth aspect, includes a receiving unit, a converting unit, and a sending unit.
  • the receiving unit is configured to receive a first bandwidth response message that is sent by the bandwidth allocation device, where the first bandwidth response message includes bandwidth grant information, where the bandwidth grant information is bandwidth information corresponding to the service allocated to the second access device.
  • the converting unit is configured to perform protocol format conversion on the first bandwidth response message to obtain a second bandwidth response message, where the second bandwidth response message includes the bandwidth grant information.
  • the sending unit is configured to send the second bandwidth response message to the second access device.
  • the first bandwidth response message and the second bandwidth response message are based on different protocols, and the first bandwidth response message may be an IP-based message, and the second bandwidth response message may be Passive optical network (PON) based message.
  • PON Passive optical network
  • the tenth aspect provides a bandwidth scheduling system, where the system includes the second access device in any one of the eighth aspect or the eighth aspect, and the ninth aspect or the ninth aspect The first access device.
  • FIG. 1 is a schematic diagram of an existing bandwidth scheduling method.
  • FIG. 2(a) is a flowchart of a bandwidth scheduling method according to Embodiment 1 of the present application.
  • FIG. 2(b) is a flowchart of a bandwidth scheduling method according to Embodiment 2 of the present application.
  • FIG. 3(a) is a schematic diagram of a format of a first bandwidth request message according to an embodiment of the present application.
  • FIG. 3(b) is a schematic diagram of a format of a first bandwidth response message according to an embodiment of the present application.
  • FIG. 4(a) is a schematic structural diagram of a bandwidth allocation apparatus according to an embodiment of the present application.
  • FIG. 4(b) is a schematic structural diagram of a message conversion apparatus according to an embodiment of the present application.
  • FIG. 4(c) is a schematic structural diagram of a second access device according to an embodiment of the present application.
  • FIG. 5(a) is a schematic structural diagram of a bandwidth allocation apparatus according to an embodiment of the present application.
  • FIG. 5(b) is a schematic structural diagram of a message conversion apparatus according to an embodiment of the present application.
  • FIG. 6(a) is a schematic structural diagram of a bandwidth scheduling system according to an embodiment of the present application.
  • FIG. 6(b) is a schematic structural diagram of a bandwidth scheduling system according to an embodiment of the present application.
  • FIG. 6(c) is a schematic diagram of a scenario of a bandwidth scheduling method according to an embodiment of the present application.
  • FIG. 6(d) is a schematic diagram of another scenario of the bandwidth scheduling method provided by the embodiment of the present application.
  • An embodiment of the present application provides a bandwidth scheduling method, in which a message conversion apparatus receives a second bandwidth request message sent by a user equipment, where the second bandwidth request message includes a first bandwidth requirement, and the first bandwidth The requirement is a bandwidth required for completing the first service transmission; the message conversion apparatus obtains a first bandwidth request message according to the second bandwidth request message, where the first bandwidth request message includes the first bandwidth requirement; The message conversion device transmits the first bandwidth request message to a bandwidth allocation device.
  • the bandwidth allocation device receives the first bandwidth request message sent by the message conversion device, and the bandwidth allocation device calculates, according to the first bandwidth requirement, the first bandwidth grant information and the second bandwidth grant information, where the first bandwidth grant information is Bandwidth information corresponding to the service allocated to the user side device, the second bandwidth granting information is bandwidth information corresponding to the service allocated to the second access device; and the bandwidth allocating device converts the message
  • the device sends a first bandwidth response message, and sends a second bandwidth response message to the first access device, where the first bandwidth response message includes the first bandwidth grant information, and the second bandwidth response message includes the first Two bandwidth grant information.
  • FIG. 2(a) is a flowchart of a bandwidth scheduling method according to Embodiment 1 of the present application.
  • the user equipment is a CM
  • the first access device is an OLT
  • the message switching device is disposed on the second access device
  • the second access device is an ONU.
  • the action related to message conversion performed by the ONU in the first embodiment can be performed by a message conversion device included in the ONU.
  • the user-side device may also be another device having the function of the first embodiment.
  • the first access device and the second access device may also be corresponding. Other devices having the functions of the OLT and ONU devices of the first embodiment.
  • the bandwidth scheduling method provided in Embodiment 1 of the present application will be described below with reference to FIG. 2(a).
  • the CM sends a second bandwidth request message to the ONU.
  • the second bandwidth request message includes a first bandwidth requirement.
  • the first bandwidth requirement is a bandwidth required to complete the first service transmission.
  • the second bandwidth request message may further include at least one of a first service identifier and first priority information.
  • the first service identifier is used to identify the first service.
  • the first priority information is used to identify a priority of the first service.
  • the second bandwidth request message may be a data over cable service interface specification (DOCSIS) bandwidth request message.
  • the message body of the second bandwidth request message includes a field for carrying the first bandwidth requirement.
  • the message body of the second bandwidth request message further includes a field for carrying the first service identifier.
  • DOCSIS data over cable service interface specification
  • At least one of the first service identifier and the first priority information may be placed in a message header of the second bandwidth request message to ensure that it can be delivered to the bandwidth allocation device.
  • the second bandwidth request message may be a message based on a data over cable service interface specification (DOCSIS), a message based on a passive optical network (PON), or a wireless communication.
  • DOCSIS data over cable service interface specification
  • PON passive optical network
  • wireless communication a wireless communication.
  • the ONU sends a first bandwidth request message to the bandwidth allocation apparatus.
  • the ONU obtains the first bandwidth request message according to the first bandwidth requirement carried in the second bandwidth request message.
  • the first bandwidth request message is a message obtained after performing protocol conversion on the second bandwidth request message.
  • the first bandwidth request message may be an Internet Protocol (IP) based message.
  • IP Internet Protocol
  • the first bandwidth requirement may be carried in a message body of the first bandwidth request message.
  • the first bandwidth request message may be based on an IP protocol or an Ethernet encapsulation.
  • the destination address of the first bandwidth request message is an address of the bandwidth allocation device.
  • the source address of the first bandwidth request message is an address of the ONU. Specifically, the source address of the first bandwidth request message may be an address of a module responsible for message conversion in the ONU.
  • the first bandwidth request message further includes first type information, where the first type information is used to indicate that the message is a bandwidth related message.
  • the message header of the first bandwidth request message may include the destination address, the source address, and the first type information.
  • the message body of the first bandwidth request message may include the first bandwidth requirement.
  • the message body of the first bandwidth request message may further include at least one of a service type and the first service identifier.
  • the message body of the first bandwidth request message may further include second type information, where the second type information is used to indicate that the message body carries parameters for requesting bandwidth. If the first bandwidth request message is an Ethernet-based message, the first type information is carried in an Ethernet type field, and the code field in the message body is used to carry the second type information.
  • the value of the code shown in FIG. 3(a) is only an example, indicating that the message is a bandwidth request message, and the code may also indicate that the message is a bandwidth request message by using other values, which are not illustrated one by one.
  • the bandwidth allocation apparatus sends a first bandwidth response message to the ONU.
  • the bandwidth allocation apparatus calculates and obtains the first bandwidth grant information and the second bandwidth grant information according to the first bandwidth requirement in the first bandwidth request message.
  • the first bandwidth grant information is bandwidth information corresponding to the first service that is allocated to the CM.
  • the second bandwidth grant information is bandwidth information corresponding to the first service that is allocated to the ONU.
  • the bandwidth allocation device may obtain the first bandwidth grant information and the second bandwidth grant information according to a general DBA algorithm, which is not illustrated herein.
  • the first bandwidth authorization information includes at least one of first time information and first frequency information, where the first time information includes a start point of the first time slice and a length of the first time slice, the first The frequency information includes a center frequency of the first frequency band and a frequency width of the first frequency band, where a starting point of the first time slice is a starting time at which the CM sends the service, and a length of the first time slice is the CM The effective duration of sending the service, where the first frequency band is a frequency range in which the CM sends the service.
  • the second bandwidth grant information includes at least one of the second time information and the second frequency information, where the second time information includes a start point of the second time slice and a length of the second time slice, the second The frequency information includes a center frequency of the second frequency band and a frequency width of the second frequency band, where a starting point of the second time slice is a start time at which the ONU sends the service, and a length of the second time slice is the ONU.
  • the effective duration of sending the service where the second frequency band is a frequency range in which the ONU sends the service.
  • the starting point of the second time slice may be determined according to a starting point of the first time slice and a length of the first time slice, for example, a starting point of the second time slice is a starting point of the first time slice The time obtained by accumulating the length of the first time slice.
  • the determining of the starting point of the second time slice may also consider a transmission delay generated by the CM, that is, the starting point of the second time slice is the starting point of the first time slice, and the first time slice is accumulated. The length and the time of the transmission delay generated by the CM.
  • the first bandwidth grant information and the second bandwidth grant information include the same type of parameters. And if the first bandwidth grant information includes the first time information, the second bandwidth grant information includes the second time information. And if the first bandwidth grant information includes the first frequency information, the second bandwidth grant information includes the second frequency information.
  • the first bandwidth response message includes a message header and a message body.
  • the message header of the first bandwidth response message includes a destination address, a source address, and first type information.
  • the destination address is an address of the ONU. Specifically, the destination address is an address of a module of a protocol type used to convert a message in the ONU.
  • the source address is an address of the bandwidth allocation device.
  • the first type of information is used to indicate that the message is a bandwidth related message.
  • the message body of the first bandwidth response message includes the first bandwidth grant information and the second type information.
  • the second type of information is used to indicate that a parameter for allocating bandwidth is carried.
  • the first bandwidth response message is based on an Ethernet encapsulation
  • the first type information is carried in an Ethernet type field of a message header
  • the second type information is carried in a code field of a message body.
  • the value of the code shown in FIG. 3(b) is only an example, indicating that the message is a bandwidth response message, and the code can also indicate that the message is a bandwidth response message by other values, which will not be illustrated one by one.
  • the ONU sends a second bandwidth response message to the CM.
  • the ONU converts the first bandwidth response message into a second bandwidth response message according to a protocol used by the second bandwidth request message.
  • the protocol on which the second bandwidth response message is based is the same as the protocol on which the second bandwidth request message is based, and the format of the second bandwidth response message is not described here.
  • the second bandwidth response message includes the first bandwidth grant information.
  • the bandwidth allocation apparatus sends a third bandwidth response message to the OLT.
  • the bandwidth allocation apparatus generates the third bandwidth response message according to a communication protocol adopted by the OLT.
  • the third bandwidth response message includes the second bandwidth grant information.
  • the third bandwidth response message may be an IP based message, or the third bandwidth response message may be encapsulated in an Ethernet.
  • the OLT may perform format conversion on the third bandwidth response message. That is, based on the communication protocol between the OLT and the ONU, the OLT converts the third bandwidth response message into a fourth bandwidth response message that the ONU can identify, and the fourth bandwidth response message includes the second bandwidth grant information. The OLT sends the fourth bandwidth response message to the ONU.
  • the bandwidth allocation apparatus may send the third bandwidth response message to the OLT before, after or at the same time as sending the first bandwidth response message.
  • 205 and 203 in the embodiment of the present application do not indicate a sequence, which is used to distinguish different steps.
  • the ONU sends uplink data from the CM to the OLT.
  • the CM may complete its own bandwidth configuration after obtaining the first bandwidth grant information, and the ONU may complete its own bandwidth configuration after obtaining the second bandwidth grant information.
  • the CM can send uplink data to the ONU according to its configured bandwidth.
  • the ONU may send the uplink data to the OLT according to the bandwidth configured by the ONU.
  • the OLT can directly forward uplink data from the ONU. In this way, when the uplink data is sent to the OLT, there is no need to wait for the OLT to apply for a process of allocating bandwidth, which helps to shorten the transmission delay and improve the bandwidth allocation efficiency.
  • the bandwidth allocation device allocates the bandwidth required for the uplink data from the CM to the CM and the ONU according to the first bandwidth request message sent by the ONU, so as to avoid multiple requests for allocation in the uplink data transmission process. Transmission delay due to bandwidth and interaction.
  • the CM uses the allocated bandwidth to transmit uplink data, which is beneficial to satisfy the transmission delay in the service transmission process and improve the bandwidth allocation efficiency.
  • the bandwidth allocation apparatus may carry the first bandwidth grant information and the second bandwidth grant information in a first bandwidth response message.
  • the bandwidth allocation device directly sends the second bandwidth grant information to the ONU by using the first bandwidth response message, and the process of sending the second bandwidth grant information to the ONU through the OLT and the process of converting the message by the OLT may be omitted. Can further improve the efficiency of bandwidth configuration.
  • the "first”, “second”, and “third” in the first embodiment are distinguished from the same type of message by name, and the name can be modified according to actual needs.
  • the name of the third bandwidth response message in the first embodiment may be modified into a second bandwidth response message.
  • the second bandwidth response message in the first embodiment may be modified into a third bandwidth response message.
  • FIG. 2(b) is a flowchart of a bandwidth scheduling method according to Embodiment 2 of the present application.
  • the first user-side device is CM1
  • the second user-side device is CM2
  • the first access device is an OLT
  • the message conversion device is disposed on the second access device
  • the second access device is ONU.
  • the message conversion related actions performed by the ONU in the second embodiment can be performed by the message conversion device included in the ONU.
  • the bandwidth scheduling method provided in the second embodiment of the present application is described below with reference to FIG. 2(b).
  • the CM1 sends a second bandwidth request message to the ONU.
  • CM1 in Embodiment 2 may be a CM in the embodiment.
  • the second bandwidth request message may include the first priority information in addition to the parameters included in the second bandwidth request message in the first embodiment.
  • the first priority information is used to identify the priority of the CM1.
  • the first priority information is a high priority.
  • the first priority information may also be represented by a service type or a service identifier.
  • the priority of the video service is higher than the priority of the audio service, that is, the video service is of high priority. If the bandwidth requested by CM1 is used to transmit video services, the first priority information may be determined by the type of video service.
  • the CM2 sends a third bandwidth request message to the ONU.
  • the third bandwidth request message includes a second bandwidth requirement and second priority information.
  • the second bandwidth requirement is a bandwidth required to complete the second service transmission.
  • the second priority information is used to identify a priority of the second service.
  • the second priority information is a low priority, that is, the priority of the second service is lower than the priority of the first service.
  • the protocol format of the third bandwidth request message may be the same as the protocol format of the second bandwidth request message, or may be different from the protocol format of the second bandwidth request message.
  • the ONU sends a first bandwidth request message to the bandwidth allocation apparatus.
  • the ONU receives the second bandwidth request message and the third bandwidth request message, and may divide the second bandwidth request message into the first priority information and the second priority information.
  • a high priority queue that routes the third bandwidth request message into a low priority queue. After completing the bandwidth request message in the high priority queue, the ONU completes the bandwidth request message of the low priority queue.
  • the method for the ONU to generate the first bandwidth request message according to the second bandwidth request message may refer to the corresponding content in 202 of the first embodiment.
  • the method for the ONU to send the first bandwidth request message to the bandwidth allocation apparatus refer to the response content of the first embodiment.
  • the bandwidth allocation apparatus sends a first bandwidth response message to the ONU.
  • the method of the method is the same as that of the 203 of the first embodiment, and details are not described herein again.
  • the first bandwidth response message includes first bandwidth grant information.
  • first bandwidth grant information refer to the first bandwidth grant information in the first embodiment, that is, the CM1 in the second embodiment may be a CM of the embodiment.
  • the first bandwidth grant information is a bandwidth allocated to the CM1 corresponding to the first service.
  • the bandwidth allocation device may include priority information included in the bandwidth request message, such as first priority information in the first bandwidth request message. Determining that the first bandwidth request message is processed preferentially.
  • the ONU sends a second bandwidth response message to the CM1.
  • the bandwidth allocation apparatus sends a third bandwidth response message to the OLT.
  • the OLT After receiving the third bandwidth response message, the OLT performs protocol format conversion on the third bandwidth response message to obtain a third format response message after the protocol format conversion, and the third bandwidth response message after the protocol format conversion.
  • the second bandwidth grant information obtained by the bandwidth allocation device is calculated.
  • the second bandwidth grant information refer to the second bandwidth grant information in Embodiment 1.
  • the second bandwidth grant information is bandwidth information corresponding to the first service that is allocated to the ONU.
  • the protocol adopted by the protocol format converted third bandwidth response message is a communication protocol between the OLT and the ONU.
  • the OLT sends the third format response message after the protocol format conversion to the ONU.
  • the ONU sends uplink data from the CM1 to the OLT.
  • the ONU sends a fourth bandwidth request message to the bandwidth allocation apparatus.
  • the ONU obtains a fourth bandwidth request message according to the second bandwidth requirement carried in the third bandwidth request message.
  • the fourth bandwidth request message may be in the format of FIG. 3( a ), which is different from the first bandwidth request message in that the parameter carried by the message body of the fourth bandwidth request message is related to the first bandwidth request.
  • the message body of the message carries different parameters.
  • the message body of the fourth bandwidth request message includes the second bandwidth requirement and the second priority information.
  • the bandwidth allocation apparatus sends a fourth bandwidth response message to the ONU.
  • the bandwidth allocation device obtains the third bandwidth grant information and the fourth bandwidth grant information.
  • the method for obtaining the first bandwidth grant information and the second bandwidth grant information in the 203 of the first embodiment is bandwidth information corresponding to the second service that is allocated to the CM2.
  • the fourth bandwidth grant information is bandwidth information corresponding to the second service that is allocated to the ONU.
  • the third bandwidth grant information and the fourth bandwidth grant information include the same type of parameters.
  • the third bandwidth grant information includes at least one of third time information and third frequency information, where the third time information includes a start point of the third time slice and a length of the third time slice, the third The frequency information includes a center frequency of the third frequency band and a frequency width of the third frequency band, where a starting point of the third time slice is a start time of the second service of the CM2, and a length of the first time slice is The effective time length of the second service is sent by the CM2, where the first frequency band is a frequency range in which the CM2 sends the second service.
  • the fourth bandwidth grant information includes at least one of fourth time information including a start point of a fourth time slice and a length of a fourth time slice, and the fourth time information, the fourth time information
  • the frequency information includes a center frequency of the fourth frequency band and a frequency width of the fourth frequency band, where the starting point of the fourth time slice is a start time of the second service by the ONU, and the length of the fourth time slice is The effective duration of the second service is sent by the ONU, and the fourth frequency band is a frequency range in which the second service is sent by the ONU.
  • the fourth bandwidth response message is also in the format shown in FIG. 3(b), which is different from the first bandwidth response message in that the message body of the fourth bandwidth response message includes parameters and graphs.
  • the message body in 3(b) includes different parameters, that is, the fourth bandwidth response message includes the third bandwidth grant information.
  • the ONU sends a fifth bandwidth response message to the CM2.
  • the method of 310 can be referred to the method of 204 of the first embodiment.
  • the difference from the first embodiment is that the fifth bandwidth response message carries the third bandwidth grant information.
  • the fifth bandwidth response message is a message obtained after performing protocol format conversion on the fourth bandwidth response message.
  • the bandwidth allocation apparatus sends a sixth bandwidth response message to the OLT.
  • the sixth bandwidth response message includes the fourth bandwidth grant information.
  • the 311 may be performed before 309, or 311 may be performed simultaneously with 309, and will not be exemplified one by one.
  • the OLT may obtain the sixth bandwidth response message after the protocol format conversion by using the method in the first embodiment, and send the fourth bandwidth grant information to the ONU by using the sixth bandwidth response message after the protocol format conversion.
  • the ONU sends uplink data from the CM2 to the OLT.
  • the CM2 can complete the configuration of its own bandwidth according to the third bandwidth grant information.
  • the ONU can complete the configuration of its own bandwidth according to the fourth bandwidth grant information.
  • the CM2 can send the uplink data of the second service to the ONU through the configured bandwidth.
  • the ONU can send the uplink data of the second service to the OLT through the configured bandwidth.
  • the OLT can directly forward the uplink data of the second service from the ONU. In this way, when the uplink data is sent to the OLT, there is no need to wait for the OLT to apply for a process of allocating bandwidth, which helps to shorten the transmission delay and improve the bandwidth allocation efficiency.
  • the ONU can preferentially process the high-priority bandwidth request message according to the priority information carried in the bandwidth request message from the CM1 and the CM2, so that the bandwidth of the high-priority service is preferentially configured. Helps reduce the transmission delay of high priority services.
  • the message switching apparatus may be configured on other second access devices, and the other second access devices may be CMTS, CCAP, AP, or BS.
  • the "first”, “second”, and “third” in the second embodiment are distinguished from the same type of message by name, and the name can be modified according to actual needs.
  • the name of the third bandwidth response message in the second embodiment may be modified into a second bandwidth response message.
  • the second bandwidth response message in the second embodiment may be modified into a third bandwidth response message.
  • FIG. 4(a) is a schematic structural diagram of a bandwidth allocation apparatus according to an embodiment of the present application.
  • the bandwidth allocating means in this embodiment may be the bandwidth allocating means in the embodiment of Fig. 2 (a) or Fig. 2 (b).
  • the bandwidth allocation apparatus in the embodiment of the present application will be described below with reference to FIG. 4(a).
  • the bandwidth allocation apparatus includes: a receiving unit 401, a calculating unit 402, and a sending unit 403.
  • the receiving unit 401 is configured to receive a bandwidth request message sent by the message conversion apparatus, where the bandwidth request message includes a bandwidth requirement, where the bandwidth requirement is a bandwidth required for completing a service transmission.
  • the calculating unit 402 is configured to calculate, according to the bandwidth requirement, the first bandwidth grant information and the second bandwidth grant information, where the first bandwidth grant information is bandwidth information corresponding to the service that is allocated to the user side device, The second bandwidth grant information is bandwidth information corresponding to the service that is allocated to the second access device.
  • the sending unit 403 is configured to send a first bandwidth response message to the message switching device, and send a second bandwidth response message to the first access device, where the first bandwidth response message includes the first bandwidth grant information.
  • the second bandwidth response message includes the second bandwidth grant information.
  • the bandwidth request message further includes at least one of a service identifier and a priority information, where the priority information is used to identify a priority of the service, and the service identifier is used to identify the service.
  • FIG. 4(b) is a schematic structural diagram of a message conversion apparatus according to an embodiment of the present application.
  • the message conversion apparatus in this embodiment may be provided in the ONU in the embodiment of FIG. 2(a) or FIG. 2(b).
  • the message conversion device of FIG. 4(b) can perform specific configuration according to the protocol type adopted by the second access device, so that the bandwidth request of the user-side device can be quickly and efficiently sent to the bandwidth allocation device.
  • the message conversion apparatus in the embodiment of the present application will be described below with reference to FIG. 4(b).
  • the message conversion apparatus includes: a first receiving unit 501, a first converting unit 502, a first sending unit 503, a second receiving unit 504, a second converting unit 505, and a second sending unit 506.
  • the first receiving unit 501 is configured to receive a second bandwidth request message sent by the user side device, where the second bandwidth request message includes a first bandwidth requirement, where the first bandwidth requirement is required to complete the first service transmission. Bandwidth.
  • the first converting unit 502 is configured to obtain a first bandwidth request message according to the second bandwidth request message, where the first bandwidth request message includes the first bandwidth requirement.
  • the first sending unit 503 is configured to send the first bandwidth request message to a bandwidth allocation apparatus.
  • the second receiving unit 504 is configured to receive a first bandwidth response message sent by the bandwidth allocation apparatus, where the first bandwidth response message includes first bandwidth grant information, where the first bandwidth grant information is allocated to the user Bandwidth information of the side device corresponding to the first service.
  • the second converting unit 505 is configured to obtain a second bandwidth response message according to the first bandwidth response message, where the second bandwidth response message includes the first bandwidth grant information. Specifically, the second converting unit 505 is configured to perform protocol format conversion on the first bandwidth response message to obtain the second bandwidth response message.
  • the second sending unit 506 is configured to send the second bandwidth response message to the user side device.
  • the second sending unit 506 and the second converting unit 505 can be disposed in one physical component.
  • the first bandwidth request message further includes at least one of a first service identifier and a first priority information, where the first priority information is used to identify a priority of the first service, where the first The service identifier is used to identify the first service.
  • the first bandwidth request message is based on the same protocol as the first bandwidth response message, and the first bandwidth request message is based on an Internet IP protocol or an Ethernet protocol;
  • the second bandwidth request message and the first bandwidth request message are based on different protocols, and the second bandwidth response message and the second bandwidth request message are based on the same protocol.
  • the first bandwidth response message further includes second bandwidth grant information, where the second bandwidth grant information is bandwidth information corresponding to the second service that is allocated to the user side device.
  • the first receiving unit 501 is further configured to receive a second bandwidth requirement sent by the user side device, where the second bandwidth requirement is a bandwidth required for completing the second service transmission;
  • the first converting unit 502 is further configured to add the second bandwidth requirement to the first bandwidth request message;
  • the second converting unit 505 is further configured to obtain the second bandwidth grant information from the first bandwidth response message;
  • the second sending unit 506 is further configured to send the second bandwidth grant information to the user side device.
  • FIG. 4(c) is a schematic structural diagram of a second access device according to an embodiment of the present application.
  • the second access device provided by the embodiment of the present application may include the message conversion device shown in FIG. 4(b).
  • the second access device further includes a third receiving unit 507 and a bandwidth configuration unit 508.
  • the third receiving unit 507 is configured to receive a third bandwidth response message sent by the first receiving device, where the third bandwidth response message includes third bandwidth grant information, where the third bandwidth grant information is allocated to the second The bandwidth information of the access device corresponding to the first service.
  • the bandwidth configuration unit 508 is configured to complete bandwidth configuration according to the third bandwidth grant information.
  • the third bandwidth grant information may refer to the second bandwidth grant information in the embodiment corresponding to FIG. 2( a ).
  • the embodiment of the present application further provides a first access device.
  • the first access device includes a receiving unit, a converting unit, and a sending unit.
  • the receiving unit is configured to receive a first bandwidth response message that is sent by the bandwidth allocation device, where the first bandwidth response message includes bandwidth grant information, where the bandwidth grant information is bandwidth information corresponding to the service allocated to the second access device.
  • the converting unit is configured to perform protocol format conversion on the first bandwidth response message to obtain a second bandwidth response message, where the second bandwidth response message includes the bandwidth grant information.
  • the sending unit is configured to send the second bandwidth response message to the second access device.
  • the bandwidth grant information may refer to the second bandwidth grant information in the embodiment corresponding to FIG. 2(a).
  • the first bandwidth response message and the second bandwidth response message are based on different protocols
  • the first bandwidth response message may be an IP based message
  • the second bandwidth response message may be a PON based message.
  • FIG. 5(a) is a schematic structural diagram of a bandwidth allocation apparatus according to an embodiment of the present application.
  • the bandwidth allocating means in this embodiment may be the bandwidth allocating means in the embodiment of Fig. 2 (a), Fig. 2 (b) or Fig. 4 (a).
  • This embodiment describes the structure of the bandwidth allocation apparatus from hardware implementation.
  • the bandwidth allocation apparatus in this embodiment includes a processor 601, a memory 602, and a communication interface 603.
  • the processor 601, the memory 602, and the communication interface 603 are connected by a communication bus 604.
  • the memory 602 is used to store programs.
  • the processor 601 executes the method steps performed by the bandwidth allocating device in the first embodiment or the second embodiment according to the executable instructions included in the program read from the memory 602.
  • the processor 601 can send and receive a bandwidth request message and a bandwidth response message through the communication interface 603.
  • FIG. 5(b) is a schematic structural diagram of a message conversion apparatus according to an embodiment of the present application.
  • the message conversion device in this embodiment can be disposed in the ONU in the embodiment of FIGS. 2(a) and 2(b).
  • the message conversion apparatus in this embodiment may be the same device as the message conversion apparatus of FIG. 4(b).
  • This embodiment describes the structure of the message conversion apparatus from hardware implementation.
  • the message conversion apparatus in this embodiment includes a processor 701, a memory 702, and a communication interface 703.
  • the processor 701, the memory 702, and the communication interface 703 are connected by a communication bus 704.
  • the memory 702 is used to store programs.
  • the processor 701 executes the method steps performed by the ONU in the first embodiment or the second embodiment according to the executable instructions included in the program read from the memory 702.
  • the processor 701 can send and receive a bandwidth request message and a bandwidth response message through the communication interface 703.
  • the embodiment of the present application provides a second access device.
  • the access device may include the message conversion device provided by the embodiment corresponding to FIG. 5(b).
  • the component of the second access device in this embodiment that implements receiving the bandwidth response message from the first access device may be the communication interface 703 in FIG. 5(b).
  • the second access device may use the processor 701 of FIG. 5(b) to perform bandwidth configuration, that is, complete bandwidth configuration according to bandwidth grant information in the bandwidth response message from the first access device.
  • the second access device may also adopt an interface different from the communication interface 703 to receive a bandwidth response message from the first access device.
  • the second access device may use a processor different from the processor 701 to perform bandwidth configuration, which is not illustrated one by one.
  • FIG. 6(a) is a schematic structural diagram of a bandwidth scheduling system according to an embodiment of the present application.
  • the bandwidth scheduling system provided by this embodiment may include the bandwidth allocation device shown in FIG. 4(a) and the message conversion device shown in FIG. 4(b).
  • the bandwidth scheduling system provided by the embodiment of the present application may further include the bandwidth allocation apparatus of FIG. 5(a) and the message conversion apparatus of FIG. 5(b), where the two devices are no longer in use. Repeat them.
  • FIG. 6(b) is a schematic structural diagram of a bandwidth scheduling system according to an embodiment of the present application.
  • the cable device conversion module may be a message conversion device installed in an access device of the fixed network
  • the PON device conversion module may be an access device placed in the PON network.
  • the wireless device conversion module may be a message conversion module placed in an access device of the wireless network.
  • the cable device conversion module includes a data over cable service interface specification (DOCSIS) bandwidth request receiving module, a high priority queue, a low priority queue, a bandwidth request message conversion module, The grant message conversion module and the DOCSIS grant send module are granted.
  • the DOCSIS bandwidth request receiving module included in the cable device conversion module receives a DOCSIS request message from the user side device, and the message may be represented as a DOCSIS Req. message, which may be a MAC frame.
  • the parameters carried by the DOCSIS request message can be referred to the second bandwidth request message in FIG. 2(a) and FIG. 2(b).
  • the DOCSIS bandwidth request receiving module included in the cable device conversion module may put the DOCSIS Req.
  • the bandwidth request message conversion module in the cable device conversion module preferentially reads the message in the high priority queue, and then reads the message in the low priority queue after the high priority queue becomes empty.
  • the bandwidth request message conversion module in the cable device conversion module converts the read message into an IP-based bandwidth request message, which can be expressed as BW Req.over IP.
  • the bandwidth request message conversion module in the cable device conversion module transmits an IP-based bandwidth request message to the bandwidth allocation device.
  • the parameters carried by the IP-based bandwidth request message can be referred to the first bandwidth request message in FIG. 2(a) and FIG. 2(b).
  • the grant message conversion module in the cable device conversion module receives the IP-based bandwidth grant message of the bandwidth allocation device, which may be specifically represented as a BW Grant over IP, and the parameters carried by the message may be referred to FIG. 2(a) and FIG. 2(b).
  • the grant message conversion module in the cable device conversion module converts the IP-based bandwidth grant message into a bandwidth grant message, which may be specifically represented as a DOCSIS Grant message, which is a MAC frame and sent to the DOCSIS grant sending module.
  • the DOCSIS grant sending module sends a DOCSIS Grant message to the user side device.
  • the parameters carried by the bandwidth grant message can be referred to the second bandwidth response message in FIG. 2(a) and FIG. 2(b).
  • the PON device conversion module includes a PON bandwidth request receiving module, a high priority queue, a low priority queue, a bandwidth request message conversion module, a grant message conversion module, and a PON grant sending module.
  • the PON bandwidth request receiving module included in the PON device conversion module receives the PON request message from the user side device, and the message may be represented as a PON Req. message, and the message may be a MAC frame.
  • the parameters carried by the PON request message can be referred to the second bandwidth request message in FIG. 2(a) and FIG. 2(b).
  • the PON bandwidth request receiving module included in the PON device conversion module may put the PON Req.
  • the bandwidth request message conversion module in the PON device conversion module preferentially reads the message in the high priority queue, and then reads the message in the low priority queue after the high priority queue becomes empty.
  • the bandwidth request message conversion module in the PON device conversion module converts the read message into an IP-based bandwidth request message, which can be expressed as BW Req.over IP.
  • the bandwidth request message conversion module in the PON device conversion module transmits an IP-based bandwidth request message to the bandwidth allocation device.
  • the parameters carried by the IP-based bandwidth request message can be referred to the first bandwidth request message in FIG. 2(a) and FIG. 2(b).
  • the grant message conversion module in the PON device conversion module receives the IP-based bandwidth grant message of the bandwidth allocation device, which may be specifically represented as a BW Grant over IP, and the parameters carried by the message may be referred to FIG. 2(a) and FIG. 2(b).
  • the grant message conversion module in the PON device conversion module converts the IP-based bandwidth grant message into a bandwidth grant message, which may be specifically represented as a PON Grant message, which is a MAC frame and sent to the PON grant sending module.
  • the PON grant sending module sends a PON Grant message to the user side device.
  • the parameters carried by the bandwidth grant message can be referred to the second bandwidth response message in FIG. 2(a) and FIG. 2(b).
  • the wireless device conversion module includes a wireless bandwidth request receiving module, a high priority queue, a low priority queue, a bandwidth request message conversion module, a grant message conversion module, and a wireless grant sending module.
  • the wireless bandwidth request receiving module included in the wireless device conversion module receives a wireless request message from the user side device, and the message may be represented as a wireless Req. message, which may be a MAC frame.
  • the parameters carried by the wireless request message can be referred to the second bandwidth request message in FIG. 2(a) and FIG. 2(b).
  • the wireless bandwidth request receiving module included in the wireless device conversion module may put the wireless Req. message into the high priority queue or the low priority queue according to the priority information carried in the wireless Req. message.
  • the bandwidth request message conversion module in the wireless device conversion module preferentially reads the message in the high priority queue, and then reads the message in the low priority queue after the high priority queue becomes empty.
  • the bandwidth request message conversion module in the wireless device conversion module converts the read message into an IP-based bandwidth request message, which can be expressed as BW Req.over IP.
  • the bandwidth request message conversion module in the wireless device conversion module transmits an IP based bandwidth request message to the bandwidth allocation device.
  • the parameters carried by the IP-based bandwidth request message can be referred to the first bandwidth request message in FIG. 2(a) and FIG. 2(b).
  • the grant message conversion module in the wireless device conversion module receives the IP-based bandwidth grant message of the bandwidth allocation device, which may be specifically represented as a BW Grant over IP, and the parameters carried by the message may be referred to FIG. 2(a) and FIG. 2(b).
  • the grant message conversion module in the wireless device conversion module converts the IP-based bandwidth grant message into a bandwidth grant message, which may be specifically represented as a wireless Grant message, which is a MAC frame and sent to the wireless grant sending module.
  • the wireless grant sending module sends a wireless Grant message to the user side device.
  • the parameters carried by the bandwidth grant message can be referred to the second bandwidth response message in Figures 2(a) and 2(b).
  • FIG. 6(c) is a schematic diagram of a scenario of a bandwidth scheduling method according to an embodiment of the present application.
  • the bandwidth allocation means may be the bandwidth allocation means in FIG. 2(a) or FIG. 2(b).
  • the DOCSIS Req may be the second bandwidth request message in Figure 2(a) or Figure 2(b).
  • the BW Req over IP may be the first bandwidth request message in FIG. 2(a) or FIG. 2(b).
  • the BW Grant over IP sent by the bandwidth allocation device to the ONU may be the first bandwidth response message in FIG. 2(a) or FIG. 2(b).
  • the BW Grant over IP sent by the bandwidth allocation device to the OLT may be the third bandwidth response message in FIG. 2(a) or FIG. 2(b).
  • the PON Grant sent by the OLT to the ONU may be the fourth bandwidth response message in the first embodiment, or the third bandwidth response message after the protocol format conversion in the second embodiment.
  • the DOCSIS Grant may be the second bandwidth response message in Figure 2(a) or Figure 2(b).
  • the ONU in Figure 6(c) has a built-in cable device.
  • FIG. 6(d) is a schematic diagram of another scenario of the bandwidth scheduling method provided by the embodiment of the present application.
  • the bandwidth allocation means may be the bandwidth allocation means in FIG. 2(a) or FIG. 2(b).
  • Wireless Req may be the second bandwidth request message in Figure 2(a) or Figure 2(b).
  • the BW Req over IP may be the first bandwidth request message in FIG. 2(a) or FIG. 2(b).
  • the BW Grant over IP sent by the bandwidth allocation device to the ONU may be the first bandwidth response message in FIG. 2(a) or FIG. 2(b).
  • the BW Grant over IP sent by the bandwidth allocation device to the OLT may be the third bandwidth response message in FIG. 2(a) or FIG. 2(b).
  • the PON Grant sent by the OLT to the ONU may be the fourth bandwidth response message in the first embodiment, or the third bandwidth response message after the protocol format conversion in the second embodiment.
  • the Wireless Grant may be the second bandwidth response message in Figure 2(a) or Figure 2(b).
  • the ONU in Figure 6(d) has a built-in Wireless AP or BS function.
  • the message conversion apparatus provided by the embodiment of the present application may be disposed outside the second access device, and implement a bandwidth request message and a bandwidth response message by using a protocol with the second access device. Send and receive.
  • the general purpose processor referred to in the embodiments of the present application may be a microprocessor or the processor may be any conventional processor.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a combination of hardware and software modules in the processor.
  • the code implementing the above functions may be stored in a computer readable medium.
  • Computer readable media includes computer storage media.
  • a storage medium may be any available media that can be accessed by a computer.
  • the computer readable medium may be a random access memory (RAM), a read-only memory (ROM), or an electrically erasable programmable read only memory (electrically erasable).
  • EEPROM Electrically erasable read-only memory
  • CD-ROM compact disk read-only memory
  • CD-ROM optical disk storage
  • disk storage media or other magnetic storage device, or capable of carrying or storing instructions or data structures
  • the computer readable medium can be a compact disk (CD), a laser disc, a digital video disk (DVD), a floppy disk, or a Blu-ray disc.

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Abstract

本申请提供了一种带宽调度方法，所述方法中，带宽分配装置接收消息转换装置发送的带宽请求消息，所述带宽请求消息包括带宽需求，所述带宽需求为用户侧装置为了完成业务传输所需的带宽。所述带宽分配装置根据所述带宽需求，计算获得第一带宽授予信息和第二带宽授予信息，所述第一带宽授予信息为分配给用户侧设备的与所述业务对应的带宽信息，所述第二带宽授予信息为分配给第二接入设备的与所述业务对应的带宽信息。所述带宽分配装置通过所述消息转换装置，向用户侧设备发送所述第一带宽授予信息。所述带宽分配装置通过第一接入设备，向所述第二接入设备发送第二带宽授予信息。

Description

一种带宽调度方法及装置
本申请要求于2017年9月5日提交中国专利局、申请号为CN 201710790790.1、发明名称为“一种带宽调度方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种带宽调度方法及装置。
背景技术
图1为现有的带宽调度方法的示意图。如图1所示，现有的带宽调度方法中，用户侧设备向第二接入设备发送第一带宽请求消息，所述第一带宽请求消息包括用户侧设备的带宽需求。第二接入设备接收到第一带宽请求消息后，根据用户侧设备的带宽需求，为用户侧设备分配带宽。第二接入设备向用户侧设备发送第一带宽响应消息，所述第一带宽响应消息中携带了分配给用户侧设备的带宽信息。用户侧设备可根据获得的带宽信息，向第二接入设备发送上行数据。第二接入设备在接收到上行数据后，向第一接入设备发送第二带宽请求消息，以请求用来发送上行数据的带宽。第二带宽请求消息包括第二接入设备的带宽需求，第二接入设备的带宽需求是用来发送用户侧设备的上行数据的带宽需求。第一接入设备接收到第二带宽请求消息后，为第二接入设备分配带宽。第一接入设备向用户侧设备发送第二带宽响应消息，所述第二带宽响应消息中携带了分配给第二接入设备的带宽信息。第二接入设备根据获得的带宽信息，向第一接入设备发送上行数据。用户侧设备可以是电缆调制解调器(cable modem，CM)或用户设备(user equipment，UE)。第二接入设备可以是光网络单元(optical netwok unit，ONU)。第一接入设备可以是光线路终端(optical line terminal，OLT)。上述CM发送上行数据的过程中，需要经过两次动态带宽分配(dynamic bandwidth allocation，DBA)及多次通信交互，增加了上行数据的传输时延。
发明内容
本申请实施例提供了一种带宽调度方法及装置，有助于降低上行数据传输时延和提高带宽分配效率。
第一方面，提供了一种带宽调度方法，所述方法包括：带宽分配装置接收消息转换装置发送的带宽请求消息，所述带宽请求消息包括带宽需求，所述带宽需求为用于完成业务传输所需的带宽；所述带宽分配装置根据所述带宽需求，计算获得第一带宽授予信息和第二带宽授予信息，所述第一带宽授予信息为分配给用户侧设备的与所述业务对应的带宽信息，所述第二带宽授予信息为分配给第二接入设备的与所述业务对应的带宽信息；所述带宽分配装置向所述消息转换装置发送第一带宽响应消息，向所述第一接入设备发送第二带宽响应消息，所述第一带宽响应消息包括所述第一带宽授予信息，所述第二带宽响应消息包括所述第二带宽授予信息。
上述方法中，带宽分配装置直接根据消息转换装置上报的带宽请求消息，为用户侧设备及第二接入设备分配对应的带宽，并向所述消息转换装置发送所述第一带宽授予信息，向所述第一接入设备发送所述第二带宽授予信息。这样，所述消息转换装置和所述第一接 入设备在上行通信的过程中，无需经过多次带宽请求和交互，缩短了带宽请求过程对传输时延的影响，提高带宽分配效率。
在一种实现方式中，所述消息转换装置设置在第二接入设备中，或者所述消息转换装置设置在所述第二接入设备之外。在无源光网络(passive optical network，PON)系统中，所述用户侧设备可以是CM，所述第二接入设备可以是内置了有线电视电缆(cable)设备的ONU、线缆调制解调器终端系统(cable modem termination system，CMTS)或有线电视融合接入(converged cable accesss platform，CCAP)。在无线网络系统中，所述用户侧设备可以是UE，所述第二接入设备可以是具有无线的接入点(access point，AP)功能或基站(base station，BS)功能的ONU。
在一种实现方式中，所述第一带宽授权信息包括第一时间信息和第一频率信息中的至少一个，所述第一时间信息包括第一时间片的起点和第一时间片的长度，所述第一频率信息包括第一频段的中心频率和第一频段的频率宽度，所述第一时间片的起点为所述用户侧设备发送所述业务的起始时刻，所述第一时间片的长度为所述用户侧设备发送所述业务的有效时长，所述第一频段为所述用户侧设备发送所述业务的频率范围。
在一种实现方式中，所述第二带宽授予信息包括第二时间信息和第二频率信息中的至少一个，所述第二时间信息包括第二时间片的起点和第二时间片的长度，所述第二频率信息包括第二频段的中心频率和第二频段的频率宽度，所述第二时间片的起点为所述第二接入设备发送所述业务的起始时刻，所述第二时间片的长度为所述第二接入设备发送所述业务的有效时长，所述第二频段为所述第二接入设备发送所述业务的频率范围。其中，所述第二时间片的起点可根据所述第一时间片的起点和所述第一时间片的长度确定的，比如所述第二时间片的起点为所述第一时间片的起点累加所述第一时间片的长度来获得的时刻。可选的，所述第二时间片的起点的确定还可考虑所述用户侧设备产生的传输时延，即所述第二时间片的起点为所述第时间片的起点累加所述第一时间片的长度和所述用户侧设备产生的传输时延来获得的时刻。
在一种实现方式中，所述带宽请求消息还包括业务标识和优先级信息中的至少一个，所述优先级信息用于标识所述业务的优先级，所述业务标识用于标识所述业务。其中，所述业务标识可以是所述带宽请求消息中的五元组信息，所述五元组信息可用于标识某一业务；或者所述业务标识可以是携带在消息体中的信息。
在一种实现方式中，所述第一带宽响应消息和所述第二带宽响应消息为基于互联网(Internet Protocol，IP)协议的消息，或者所述第一带宽响应消息和所述第二带宽响应消息为以太网封装的消息。
在一种实现方式中，所述带宽请求消息的消息头包括目的地址、源地址和第一类型信息，所述目的地址为所述带宽分配装置的地址，所述源地址为所述消息转换装置的地址，所述第一类型信息用于表示所述消息体中携带了与带宽请求相关的参数。所述带宽请求消息的消息体包括所述带宽需求。可选的，所述带宽请求消息的消息体还包括业务标识和业务类型中的至少一个。
在一种实现方式中，所述第一带宽响应消息的消息头包括目的地址、源地址和第二类型信息，所述源地址为所述带宽分配装置的地址，所述目的地址为所述消息转换装置的地址，所述第二类型信息用于表示所述消息体中携带了与带宽授予相关的参数。所述第一带宽响应消息的消息体包括所述第一带宽授予信息。可选的，所述第一带宽响应消息的消息 体还包括业务标识和业务类型中的至少一个。
在一种实现方式中，所述第二带宽响应消息的消息头包括目的地址、源地址和第二类型信息，所述源地址为所述带宽分配装置的地址，所述目的地址为所述消息转换装置的地址，所述第二类型信息用于表示所述消息体中携带了与带宽授予相关的参数。所述第二带宽响应消息的消息体包括所述第二带宽授予信息。可选的，所述第二带宽响应消息的消息体还包括业务标识和业务类型中的至少一个。
在一种实现方式中，所述方法还包括：所述消息转换装置接收所述第一接入设备发送的第三带宽响应消息，所述第三带宽响应消息包括第二带宽授予信息。其中，所述第三带宽响应消息与所述第一带宽响应消息基于不同的协议类型。这样，所述消息转换装置在接收到所述第三带宽响应消息之后，所述消息转换装置所在的第二接入设备可根据所述第二带宽授予信息为所述用户侧设备预留带宽，以进一步缩短传输延迟。
第二方面，提供了一种带宽调度方法，所述方法包括：消息转换装置接收用户侧设备发送的第二带宽请求消息，所述第二带宽请求消息包括第一带宽需求，所述第一带宽需求为用于完成第一业务传输所需的带宽；所述消息转换装置根据所述第二带宽请求消息，获得第一带宽请求消息，所述第一带宽请求消息包括所述第一带宽需求；所述消息转换装置向带宽分配装置发送所述第一带宽请求消息；所述消息转换装置接收所述带宽分配装置发送的第一带宽响应消息，所述第一带宽响应消息包括第一带宽授予信息，所述第一带宽授予信息为分配给所述用户侧设备的与所述第一业务对应的带宽信息；所述消息转换装置根据所述第一带宽响应消息，获得第二带宽响应消息，所述第二带宽响应消息包括所述第一带宽授予信息；所述消息转换装置向所述用户侧设备发送所述第二带宽响应消息。
上述方法中，消息转换装置可对来自用户侧设备的第二带宽请求消息进行协议转换，以获得第一带宽请求消息。消息转换装置可不再向第一接入设备发送所述第一带宽请求消息，直接通过向带宽分配装置发送所述第一带宽请求消息，来触发所述带宽分配装置为所述用户侧设备和所述第二接入设备分配相应的带宽信息，简化了现有的消息转换装置和第一接入设备的带宽分配流程，提高了带宽分配效率，降低了为消息转换装置分配带宽的过程对数据传输产生的时延。
在一种实现方式中，所述第一带宽授权信息与第一方面中的所述第一带宽授予信息相同。
在一种实现方式中，所述第二带宽请求消息还包括第一优先级信息，所述第一优先级信息用于标识所述第一业务的优先级。比如，所述消息转换装置可根据所述第一优先级信息的高低，对生成新的带宽请求消息及发送顺序进行排序。如果所述第一优先级信息为高，则所述消息转换装置优先生成所述第一带宽请求消息并优先发送给所述带宽分配装置。
在一种实现方式中，所述第一带宽请求消息还包括所述第一优先级信息。如果所述第一优先级信息为高，则所述带宽分配装置可优先处理所述第一带宽请求消息，获得所述第一带宽授予信息和所述第二带宽授予信息。
在一种实现方式中，所述第二带宽请求消息还包括第一业务标识，所述第一业务标识用于标识所述第一业务。所述第一业务标识可以是所述第二带宽请求消息的消息头中携带的五元组信息，或者所述第一业务标识可以是所述第二带宽请求消息的消息体中携带的标识。
在一种实现方式中，所述第一带宽请求消息还包括所述第一业务标识。如果业务标识 均通过消息头中的五元组信息表示，所述第一带宽请求消息包括的五元组与所述第二带宽请求消息包括的五元组不完全相同，但是所述第一带宽请求消息包括的五元组仍可用于表示所述第一业务标识。所述第一带宽请求消息的消息体可以与所述第二带宽请求消息的消息体相同，即所述第一业务标识还可以是携带在所述第一带宽请求消息的消息体中。
在一种实现方式中，所述第一带宽请求消息与所述第一带宽响应消息基于相同的协议，所述第一带宽请求消息基于IP协议或以太网协议；所述第二带宽请求消息与所述第一带宽请求消息基于不同的协议，所述第二带宽响应消息与所述第二带宽请求消息基于相同的协议。比如，所述第一带宽请求消息的消息头与所述第二带宽请求消息的消息头不同，所述第一带宽请求消息的消息体与所述第二带宽请求消息的消息体相同。所述第一带宽响应消息的消息头与所述第二带宽响应消息的消息头不同，所述第一带宽响应消息的消息体与所述第二带宽响应消息的消息体相同。
在一种实现方式中，所述第一带宽响应消息还包括第二带宽授予信息，所述第二带宽授予信息为分配给所述用户侧设备的与第二业务对应的带宽信息，所述方法还包括：所述消息转换装置接收所述用户侧设备发送的第二带宽需求，所述第二带宽需求为用于完成所述第二业务传输所需的带宽；所述消息转换装置将所述第二带宽需求添加至所述第一带宽请求消息中；所述消息转换装置从所述第一带宽响应消息中获取所述第二带宽授予信息；所述消息转换装置向所述用户侧设备发送所述第二带宽授予信息。
在一种实现方式中，所述第二带宽需求可携带于所述第二带宽请求消息的消息体。所述第二带宽授予信息可携带于所述第二带宽响应消息的消息体。
第三方面，提供一种带宽分配装置，所述带宽分配装置包括：
接收单元，用于接收光网络模块消息转换装置发送的带宽请求消息，所述带宽请求消息包括带宽需求，所述带宽需求为用于完成业务传输所需的带宽；
计算单元，用于根据所述带宽需求，计算获得第一带宽授予信息和第二带宽授予信息，所述第一带宽授予信息为分配给用户侧设备的与所述业务对应的带宽信息，所述第二带宽授予信息为分配给第二接入设备的与所述业务对应的带宽信息，所述第二接入设备为所述消息转换装置所在的设备；
发送单元，用于向所述消息转换装置发送第一带宽响应消息，向第一接入设备发送第二带宽响应消息，所述第一带宽响应消息包括所述第一带宽授予信息，所述第二带宽响应消息包括所述第二带宽授予信息。
在一种实现方式中，所述带宽请求消息还包括业务标识和优先级信息中的至少一个，所述优先级信息用于标识所述业务的优先级，所述业务标识用于标识所述业务。
其中，所述第一带宽授予信息与第一方面中的第一带宽授予信息相同。所述第二带宽授予信息与第二方面中的第二带宽授予信息相同。
第四方面，提供一种消息转换装置，所述消息转换装置包括：
第一接收单元，用于用户侧设备发送的第二带宽请求消息，所述第二带宽请求消息包括第一带宽需求，所述第一带宽需求为用于完成第一业务传输所需的带宽；
第一转换单元，用于根据所述第二带宽请求消息，获得第一带宽请求消息，所述第一带宽请求消息包括所述第一带宽需求；
第一发送单元，用于向带宽分配装置发送所述第一带宽请求消息；
第二接收单元，用于接收所述带宽分配装置发送的第一带宽响应消息，所述第一带宽 响应消息包括第一带宽授予信息，所述第一带宽授予信息为分配给所述用户侧设备的与所述第一业务对应的带宽信息；
第二转换单元，用于根据所述第一带宽响应消息，获得第二带宽响应消息，所述第二带宽响应消息包括所述第一带宽授予信息；
第二发送单元，用于向所述用户侧设备发送所述第二带宽响应消息。
在一种实现方式中，其特征在于，所述第一带宽请求消息还包括第一业务标识和第一优先级信息中的至少一个，所述第一优先级信息用于标识所述第一业务的优先级，所述第一业务标识用于标识所述第一业务。
在一种实现方式中，所述第一带宽请求消息与所述第一带宽响应消息基于相同的协议，所述第一带宽请求消息基于IP协议或以太网协议；
所述第二带宽请求消息与所述第一带宽请求消息基于不同的协议，所述第二带宽响应消息与所述第二带宽请求消息基于相同的协议。
在一种实现方式中，所述第一带宽响应消息还包括第二带宽授予信息，所述第二带宽授予信息为分配给所述用户侧设备的与第二业务对应的带宽信息，
所述第一接收单元还用于接收所述用户侧设备发送的第二带宽需求，所述第二带宽需求为用于完成所述第二业务传输所需的带宽；
所述第一转换单元还用于将所述第二带宽需求添加至所述第一带宽请求消息中；
所述第二转换单元还用于从所述第一带宽响应消息中获取所述第二带宽授予信息；
所述第二发送单元还用于向所述用户侧设备发送所述第二带宽授予信息。
第四方面中的第一带宽请求消息与第二方面中的第一带宽消息相同，第四方面中的第二带宽请求消息与第二方面中的第二带宽请求消息相同。第四方面的第一带宽响应消息与第二方面中的第一带宽响应消息相同，第四方面中的第二带宽授予信息与第二方面的第二带宽授予信息相同。
在一种实现方式中，所述消息转换装置设置在第二接入设备中，或者所述消息转换装置设置在所述第二接入设备之外。
本申请的任意一种实现方式中的与某一业务对应的带宽信息即为传输该业务所需的带宽信息。所述用户侧设备为能够与所述第二接入设备通信的设置在用户一侧的装置。
第五方面，提供了一种带宽调度系统，所述系统包括第三方面或第三方面的任意一种实现方式所提供的带宽分配装置，以及所述第四方面或第四方面的任意一种实现方式所提供的消息转换装置。
第六方面，提供了一种带宽分配装置，所述带宽分配装置包括处理器、存储器和通信接口。所述处理器、所述存储器和所述通信接口可通过通信总线进行通信。所述处理器可从所述存储器中读取指令，实现上述第一方面或第一方面的任意一种实现方式包括的方法步骤。
第七方面，提供了一种消息转换装置，所述消息转换装置包括处理器、存储器和通信接口。所述处理器、所述存储器和所述通信接口可通过通信总线进行通信。所述处理器可从所述存储器中读取指令，实现上述第二方面或第二方面的任意一种实现方式包括的方法步骤。
第八方面，提供了一种第二接入设备，所述第二接入设备包括上述第四方面或第四方面的任意一种实现方式所提供的消息转换装置。
在一种实现方式中，所述第二接入设备还包括：第三接收单元和带宽配置单元，所述第三接收单元用于接收第一接收设备发送的第三带宽响应消息，所述第三带宽响应消息包括第三带宽授予信息，所述第三带宽授予信息为分配给所述第二接入设备的与所述第一业务对应的带宽信息；所述带宽配置单元用于根据所述第三带宽授予信息，完成带宽配置。
其中，所述第三带宽授予信息与第一方面或第一方面的任意一种实现方式中的第二带宽授予信息相同。
第九方面，提供了一种第一接入设备，所述第一接入设备包括接收单元、转换单元和发送单元。所述接收单元用于接收带宽分配装置发送的第一带宽响应消息，所述第一带宽响应消息包括带宽授予信息，所述带宽授予信息为分配给第二接入设备的与业务对应的带宽信息。所述转换单元用于对所述第一带宽响应消息进行协议格式转换，获得第二带宽响应消息，所述第二带宽响应消息包括所述带宽授予信息。所述发送单元用于向所述第二接入设备发送所述第二带宽响应消息。
在一种实现方式中，所述第一带宽响应消息与所述第二带宽响应消息基于不同的协议，所述第一带宽响应消息可以是基于IP的消息，所述第二带宽响应消息可以是基于无源光网络(passive optical network，PON)的消息。
第十方面，提供了一种带宽调度系统，该系统包括第八方面或第八方面的任意一种实现方式中的第二接入设备和第九方面或第九方面的任意一种实现方式中的第一接入设备。
附图说明
图1为现有的带宽调度方法的示意图。
图2(a)为本申请实施例一提供的带宽调度方法的流程图。
图2(b)为本申请实施例二提供的带宽调度方法的流程图
图3(a)为本申请实施例提供的第一带宽请求消息的格式示意图。
图3(b)为本申请实施例提供的第一带宽响应消息的格式示意图。
图4(a)为本申请实施例提供的带宽分配装置的结构示意图。
图4(b)为本申请实施例提供的消息转换装置的结构示意图。
图4(c)为本申请实施例提供的第二接入设备的结构示意图。
图5(a)为本申请实施例提供的带宽分配装置的结构示意图。
图5(b)为本申请实施例提供的消息转换装置的结构示意图。
图6(a)为本申请实施例提供的带宽调度系统的结构示意图。
图6(b)为本申请实施例提供的带宽调度系统的结构示意图。
图6(c)为本申请实施例提供的带宽调度方法的一种场景示意图。
图6(d)为本申请实施例提供的带宽调度方法的另一种场景示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述。
本申请实施例提供了一种带宽调度方法，在该方法中，消息转换装置接收用户侧设备发送的第二带宽请求消息，所述第二带宽请求消息包括第一带宽需求，所述第一带宽需求为用于完成第一业务传输所需的带宽；所述消息转换装置根据所述第二带宽请求消息，获得第一带宽请求消息，所述第一带宽请求消息包括所述第一带宽需求；所述消息转换装置 向带宽分配装置发送所述第一带宽请求消息。带宽分配装置接收消息转换装置发送的第一带宽请求消息；所述带宽分配装置根据所述第一带宽需求，计算获得第一带宽授予信息和第二带宽授予信息，所述第一带宽授予信息为分配给用户侧设备的与所述业务对应的带宽信息，所述第二带宽授予信息为分配给第二接入设备的与所述业务对应的带宽信息；所述带宽分配装置向所述消息转换装置发送第一带宽响应消息，向所述第一接入设备发送第二带宽响应消息，所述第一带宽响应消息包括所述第一带宽授予信息，所述第二带宽响应消息包括所述第二带宽授予信息。
实施例一
图2(a)为本申请实施例一提供的带宽调度方法的流程图。在该实施例中，用户侧设备为CM，第一接入设备为OLT，消息转换装置设置于第二接入设备上，所述第二接入设备为ONU。实施例一中的ONU执行的与消息转换有关的动作可由ONU包括的消息转换装置来执行。可以理解，在其他的实施方式下，该用户侧设备也可以是其他具有上实施例一功能的设备，同理，在其他实施方式下第一接入设备和第二接入设备也可以是对应具有实施例一OLT和ONU设备功能的其他设备。下面结合图2(a)，对本申请实施例一提供的带宽调度方法进行说明。
201，CM向ONU发送第二带宽请求消息。
举例说明，所述第二带宽请求消息包括第一带宽需求。所述第一带宽需求为用于完成第一业务传输所需的带宽。可选的，所述第二带宽请求消息还可包括第一业务标识和第一优先级信息中的至少一个。所述第一业务标识用于标识所述第一业务。所述第一优先级信息用于标识所述第一业务的优先级。其中，所述第二带宽请求消息可以是有线数据传输业务接口规范(data over cable service interface specification，DOCSIS)带宽请求消息。所述第二带宽请求消息的消息体包括用于携带所述第一带宽需求的字段。可选的，所述第二带宽请求消息的消息体还包括用于携带所述第一业务标识的字段。
可选的，所述第一业务标识和所述第一优先级信息中的至少一个可放在所述第二带宽请求消息的消息头中，保证能够传递到带宽分配装置中即可。
举例说明，所述第二带宽请求消息可以是基于有线数据传输业务接口规范(data over cable service interface specification，DOCSIS)的消息、基于无源光网络(passive optical network，PON)的消息或基于无线通信的消息。
202，ONU向带宽分配装置发送第一带宽请求消息。
举例说明，ONU根据所述第二带宽请求消息中携带的所述第一带宽需求，获得第一带宽请求消息。所述第一带宽请求消息是对所述第二带宽请求消息进行协议转换后获得的消息。所述第一带宽请求消息可以是基于互联网协议(Internet Protocol，IP)的消息。所述第一带宽需求可携带于所述第一带宽请求消息的消息体中。其中，所述第一带宽请求消息可基于IP协议或以太网封装。
其中，所述第一带宽请求消息的目的地址(destination address)为所述带宽分配装置的地址。所述第一带宽请求消息的源地址(source address)为ONU的地址，具体地，所述第一带宽请求消息的源地址可以为ONU中负责消息转换的模块的地址。所述第一带宽请求消息还包括第一类型信息，所述第一类型信息用于表示该消息是与带宽相关的消息。
如图3(a)所示，所述第一带宽请求消息的消息头可包括所述目的地址、所述源地址和所述第一类型信息。所述第一带宽请求消息的消息体可包括所述第一带宽需求。可选的， 所述第一带宽请求消息的消息体还可包括业务类型和所述第一业务标识中的至少一个。所述第一带宽请求消息的消息体还可包括第二类型信息，所述第二类型信息用于表示消息体携带有用于请求带宽的参数。如果所述第一带宽请求消息为基于以太网的消息，则所述第一类型信息携带于以太网类型字段中，消息体中的code字段用来携带所述第二类型信息。图3(a)所示的code取值为0只是一种示例，表示该消息为带宽请求消息，code还可通过其他取值来表示该消息为带宽请求消息，在此不再逐一举例说明。
203，所述带宽分配装置向ONU发送第一带宽响应消息。
举例说明，所述带宽分配装置根据所述第一带宽请求消息中的所述第一带宽需求，计算获得第一带宽授予信息和第二带宽授予信息。所述第一带宽授予信息为分配给CM的与所述第一业务对应的带宽信息。所述第二带宽授予信息为分配给ONU的与所述第一业务对应的带宽信息。所述带宽分配装置具体可根据通常的DBA算法获得所述第一带宽授予信息和所述第二带宽授予信息，在此不再举例说明。
举例说明，所述第一带宽授权信息包括第一时间信息和第一频率信息中的至少一个，所述第一时间信息包括第一时间片的起点和第一时间片的长度，所述第一频率信息包括第一频段的中心频率和第一频段的频率宽度，所述第一时间片的起点为所述CM发送所述业务的起始时刻，所述第一时间片的长度为所述CM发送所述业务的有效时长，所述第一频段为所述CM发送所述业务的频率范围。
举例说明，所述第二带宽授予信息包括第二时间信息和第二频率信息中的至少一个，所述第二时间信息包括第二时间片的起点和第二时间片的长度，所述第二频率信息包括第二频段的中心频率和第二频段的频率宽度，所述第二时间片的起点为所述ONU发送所述业务的起始时刻，所述第二时间片的长度为所述ONU发送所述业务的有效时长，所述第二频段为所述ONU发送所述业务的频率范围。
其中，所述第二时间片的起点可根据所述第一时间片的起点和所述第一时间片的长度确定的，比如所述第二时间片的起点为所述第一时间片的起点累加所述第一时间片的长度来获得的时刻。可选的，所述第二时间片的起点的确定还可考虑所述CM产生的传输时延，即所述第二时间片的起点为所述第时间片的起点累加所述第一时间片的长度和所述CM产生的传输时延来获得的时刻。
为了保证OLT与ONU在处理上行数据过程中的高效性，所述第一带宽授予信息和所述第二带宽授予信息包括相同类型的参数。如果所述第一带宽授予信息包括所述第一时间信息，则所述第二带宽授予信息包括所述第二时间信息。如果所述第一带宽授予信息包括所述第一频率信息，则所述第二带宽授予信息包括所述第二频率信息。
如图3(b)所示，所述第一带宽响应消息包括消息头和消息体。所述第一带宽响应消息的消息头包括目的地址、源地址和第一类型信息。所述目的地址为ONU的地址，具体地，所述目的地址为ONU中用于转换消息的协议类型的模块的地址。所述源地址为所述带宽分配装置的地址。所述第一类型信息用于表示该消息是与带宽相关的消息。所述第一带宽响应消息的消息体包括所述第一带宽授予信息和第二类型信息。所述第二类型信息用于表示携带有用于分配带宽的参数。如果所述第一带宽响应消息基于以太网封装，则所述第一类型信息携带于消息头的以太网类型字段，所述第二类型信息携带于消息体的code字段。图3(b)所示的code取值为1只是一种示例，表示该消息为带宽响应消息，code还可通过其他取值来表示该消息为带宽响应消息，在此不再逐一举例说明。
204，ONU向CM发送第二带宽响应消息。
举例说明，ONU根据所述第二带宽请求消息所采用的协议，将所述第一带宽响应消息转换为第二带宽响应消息。所述第二带宽响应消息所基于的协议和所述第二带宽请求消息所基于的协议相同，在此不再对所述第二带宽响应消息的格式进行说明。所述第二带宽响应消息包括所述第一带宽授予信息。
205，所述带宽分配装置向OLT发送第三带宽响应消息。
举例说明，所述带宽分配装置根据与OLT采用的通信协议，生成所述第三带宽响应消息。所述第三带宽响应消息包括所述第二带宽授予信息。所述第三带宽响应消息可以是基于IP的消息，或者所述第三带宽响应消息可以采用以太网封装。
举例说明，OLT在接收到所述第三带宽响应消息后，可对所述第三带宽响应消息进行格式转换。即基于OLT与ONU之间的通信协议，OLT将所述第三带宽响应消息转换为ONU能够识别的第四带宽响应消息，所述第四带宽响应消息包括所述第二带宽授予信息。OLT向ONU发送所述第四带宽响应消息。
举例说明，所述带宽分配装置可在发送所述第一带宽响应消息之前，之后或同时，向OLT发送所述第三带宽响应消息。本申请实施例中的205和203并不表示先后顺序，该序号用来区分不同的步骤。
206，ONU向OLT发送来自CM的上行数据。
举例说明，CM可在获得所述第一带宽授予信息后完成自身的带宽配置，ONU可在获得所述第二带宽授予信息后完成自身的带宽配置。CM可根据自身配置的带宽向ONU发送上行数据。ONU接收到CM发送的上行数据后，ONU可根据自身配置的带宽向OLT发送所述上行数据。所述OLT可直接转发来自ONU的上行数据。这样，所述上行数据在发送至所述OLT时，无需等待OLT再申请分配带宽的流程，有助于缩短传输时延和提高带宽的分配效率。
本申请实施例提供的带宽调度方法，带宽分配装置根据ONU发送的第一带宽请求消息，为CM和ONU分配来自CM的上行数据所需的带宽，避免在上行数据的传输过程中多次请求分配带宽和交互造成的传输延时。CM利用分配的带宽传输上行数据，有利于在业务传输过程中满足传输延时，提高带宽的分配效率。
在另一种实现方式中，所述带宽分配装置可将所述第一带宽授予信息和所述第二带宽授予信息携带在第一带宽响应消息中。所述带宽分配装置直接通过所述第一带宽响应消息，向ONU下发所述第二带宽授予信息，可以省略通过OLT向ONU下发第二带宽授予信息的流程以及OLT进行消息转换的流程，能够进一步提高带宽配置的效率。
实施例一中的“第一”、“第二”和“第三”是从名称上对于同一类型的消息进行区分，该名称可根据实际需要进行修改。比如：实施例一中的第三带宽响应消息的名称可修改为第二带宽响应消息，相应地，实施例一中的第二带宽响应消息可修改为第三带宽响应消息。
实施例二
图2(b)为本申请实施例二提供的带宽调度方法的流程图。在该实施例中，第一用户侧设备为CM1，第二用户侧设备为CM2，第一接入设备为OLT，消息转换装置设置于第二接入设备上，所述第二接入设备为ONU。实施例二中的ONU执行的与消息转换相关的动作可为ONU包括的消息转换装置执行。下面结合图2(b)，对本申请实施例二提供的带宽调度方法进行说明。
301，CM1向ONU发送第二带宽请求消息。
举例说明，实施例二中的CM1可以是实施例中的CM。所述第二带宽请求消息可包括实施例一中的第二带宽请求消息包括的参数之外，还携带有第一优先级信息。所述第一优先级信息用于标识CM1的优先级。在本实施例中，所述第一优先级信息为高优先级。
可选的，所述第一优先级信息也可通过业务类型或业务标识来来表示。比如，视频业务的优先级高于音频业务的优先级，即视频业务为高优先级。如果CM1所请求的带宽用于传输视频业务，则可通过视频业务这一类型，来确定所述第一优先级信息。
302，CM2向ONU发送第三带宽请求消息。
举例说明，所述第三带宽请求消息包括第二带宽需求和第二优先级信息。所述第二带宽需求为用于完成第二业务传输所需的带宽。所述第二优先级信息用于标识所述第二业务的优先级。该实施例中，所述第二优先级信息为低优先级，即所述第二业务的优先级低于所述第一业务的优先级。所述第三带宽请求消息的协议格式可以与所述第二带宽请求消息的协议格式相同，也可与所述第二带宽请求消息的协议格式不相同。
303，ONU向带宽分配装置发送第一带宽请求消息。
举例说明，ONU接收到所述第二带宽请求消息和所述第三带宽请求消息，可根据所述第一优先权信息和所述第二优先权信息，将所述第二带宽请求消息划入高优先级队列，将所述第三带宽请求消息划入低优先级队列。ONU在完成高优先队列中的带宽请求消息之后，再完成低优先级队列的带宽请求消息。
举例说明，ONU根据所述第二带宽请求消息生成所述第一带宽请求消息的方法可参见实施例一的202中的相应内容。ONU向带宽分配装置发送所述第一带宽请求消息的方法可参见实施例一的响应内容。
304，所述带宽分配装置向ONU发送第一带宽响应消息。
304的方法与实施例一的203的内容相同，在此不再赘述。所述第一带宽响应消息包括第一带宽授予信息。所述第一带宽授予信息可参看实施例一中的第一带宽授予信息，即实施例二中的CM1可以是实施例一种的CM。所述第一带宽授予信息为分配给CM1的与第一业务对应的带宽。
举例说明，如果所述带宽分配装置有多个待处理的带宽请求消息，所述带宽分配装置可根据带宽请求消息包括的优先级信息，比如所述第一带宽请求消息中的第一优先级信息，确定优先处理所述第一带宽请求消息。
305，ONU向CM1发送第二带宽响应消息。
305的方法可参见实施例一中204的相应内容，在此不再赘述。
306，所述带宽分配装置向OLT发送第三带宽响应消息。
306的方法可参见实施例一中205的相应内容，在此不再赘述。其中，306可在304之前，之后或同时执行。OLT在接收到所述第三带宽响应消息后，对所述第三带宽响应消息进行协议格式转换，获得协议格式转换后的第三带宽响应消息，所述协议格式转换后的第三带宽响应消息包括所述带宽分配装置计算获得的第二带宽授予信息。所述第二带宽授予信息可参见实施例一中的第二带宽授予信息。所述第二带宽授予信息为分配给ONU的与第一业务对应的带宽信息。所述协议格式转换后的第三带宽响应消息所采用的协议为OLT与ONU之间的通信协议。OLT向ONU发送所述协议格式转换后的第三带宽响应消息。
307，ONU向OLT发送来自CM1的上行数据。
307的方法可参见实施例一中206的相应内容，在此不再赘述。
308，ONU向所述带宽分配装置发送第四带宽请求消息。
举例说明，ONU根据所述第三带宽请求消息中携带的所述第二带宽需求，获得第四带宽请求消息。所述第四带宽请求消息可采用图3(a)的格式，与所述第一带宽请求消息不同之处在于，所述第四带宽请求消息的消息体携带的参数与所述第一带宽请求消息的消息体携带的参数不同。所述第四带宽请求消息的消息体包括所述第二带宽需求和所述第二优先级信息。
309，所述带宽分配装置向ONU发送第四带宽响应消息。
举例说明，所述带宽分配装置获得第三带宽授予信息和第四带宽授予信息的方法，可参见实施例一的203中获得第一带宽授予信息和第二带宽授予信息的方法。所述第三带宽授予信息为分配给CM2的与所述第二业务对应的带宽信息。所述第四带宽授予信息为分配给ONU的与所述第二业务对应的带宽信息。为了保证OLT与ONU在处理上行数据过程中的高效性，所述第三带宽授予信息和所述第四带宽授予信息包括相同类型的参数。
举例说明，所述第三带宽授权信息包括第三时间信息和第三频率信息中的至少一个，所述第三时间信息包括第三时间片的起点和第三时间片的长度，所述第三频率信息包括第三频段的中心频率和第三频段的频率宽度，所述第三时间片的起点为所述CM2发送所述第二业务的起始时刻，所述第一时间片的长度为所述CM2发送所述第二业务的有效时长，所述第一频段为所述CM2发送所述第二业务的频率范围。
举例说明，所述第四带宽授予信息包括第四时间信息和第四频率信息中的至少一个，所述第四时间信息包括第四时间片的起点和第四时间片的长度，所述第四频率信息包括第四频段的中心频率和第四频段的频率宽度，所述第四时间片的起点为所述ONU发送所述第二业务的起始时刻，所述第四时间片的长度为所述ONU发送所述第二业务的有效时长，所述第四频段为所述ONU发送所述第二业务的频率范围。
举例说明，所述第四带宽响应消息也采用图3(b)所示的格式，与所述第一带宽响应消息不同之处在于，所述第四带宽响应消息的消息体包括的参数与图3(b)中的消息体包括的参数不同，即所述第四带宽响应消息包括所述第三带宽授予信息。
310，ONU向CM2发送第五带宽响应消息。
举例说明，310的方法可参见实施例一的204的方法。与实施例一的不同之处在于，所述第五带宽响应消息中携带有所述第三带宽授予信息。所述第五带宽响应消息是对所述第四带宽响应消息进行协议格式转换后获得的消息。
311，所述带宽分配装置向OLT发送第六带宽响应消息。
举例说明，所述第六带宽响应消息包括所述第四带宽授予信息。311的方法可参见实施例一中205的相应内容，在此不再赘述。其中，311可先于309执行，或者311可以与309同时执行，在此不再逐一举例说明。OLT可采用实施例一中的方法，获得协议格式转换后的第六带宽响应消息，通过所述协议格式转换后的第六带宽响应消息，向ONU发送所述第四带宽授予信息。
312，ONU向OLT发送来自CM2的上行数据。
举例说明，CM2可根据所述第三带宽授予信息完成自身带宽的配置。ONU可根据所述第四带宽授予信息完成自身带宽的配置。CM2可通过配置的带宽，向ONU发送所述第 二业务的上行数据。ONU可通过配置的带宽，向OLT发送所述第二业务的上行数据。OLT可直接转发来自ONU的所述第二业务的上行数据。这样，所述上行数据在发送至所述OLT时，无需等待OLT再申请分配带宽的流程，有助于缩短传输时延和提高带宽的分配效率。
本申请实施例提供的带宽调度方法，ONU可根据来自CM1和CM2的带宽请求消息携带的优先级信息，优先处理高优先级的带宽请求消息，这样，优先配置高优先级的业务的带宽，有助于缩短高优先级业务的传输时延。
在其他实现方式中，所述消息转换装置可以设置于其他第二接入设备上，所述其他第二接入设备可以为CMTS、CCAP、AP或BS。
实施例二中的“第一”、“第二”和“第三”是从名称上对于同一类型的消息进行区分，该名称可根据实际需要进行修改。比如：实施例二中的第三带宽响应消息的名称可修改为第二带宽响应消息，相应地，实施例二中的第二带宽响应消息可修改为第三带宽响应消息。
图4(a)为本申请实施例提供的带宽分配装置的结构示意图。该实施例中的带宽分配装置可以是图2(a)或图2(b)的实施例中的带宽分配装置。下面结合图4(a)，对本申请实施例中的带宽分配装置进行说明。
本实施例提供的带宽分配装置包括：接收单元401、计算单元402和发送单元403。
所述接收单元401用于接收消息转换装置发送的带宽请求消息，所述带宽请求消息包括带宽需求，所述带宽需求为用于完成业务传输所需的带宽。
所述计算单元402用于根据所述带宽需求，计算获得第一带宽授予信息和第二带宽授予信息，所述第一带宽授予信息为分配给用户侧设备的与所述业务对应的带宽信息，所述第二带宽授予信息为分配给第二接入设备的与所述业务对应的带宽信息。
所述发送单元403用于向所述消息转换装置发送第一带宽响应消息，向所述第一接入设备发送第二带宽响应消息，所述第一带宽响应消息包括所述第一带宽授予信息，所述第二带宽响应消息包括所述第二带宽授予信息。
举例说明，所述带宽请求消息还包括业务标识和优先级信息中的至少一个，所述优先级信息用于标识所述业务的优先级，所述业务标识用于标识所述业务。
图4(b)为本申请实施例提供的消息转换装置的结构示意图。该实施例中的消息转换装置可以设置于图2(a)或图2(b)的实施例中的ONU。图4(b)的消息转换装置可根据其设置的第二接入设备所采用的协议类型，进行具体的配置，以实现用户侧设备的带宽请求快速高效地上送至带宽分配装置。下面结合图4(b)，对本申请实施例中的消息转换装置进行说明。
本申请实施例提供的消息转换装置包括：第一接收单元501、第一转换单元502、第一发送单元503、第二接收单元504、第二转换单元505和第二发送单元506。
所述第一接收单元501用于接收用户侧设备发送的第二带宽请求消息，所述第二带宽请求消息包括第一带宽需求，所述第一带宽需求为用于完成第一业务传输所需的带宽。
所述第一转换单元502用于根据所述第二带宽请求消息，获得第一带宽请求消息，所述第一带宽请求消息包括所述第一带宽需求。
所述第一发送单元503用于向带宽分配装置发送所述第一带宽请求消息。
所述第二接收单元504用于接收所述带宽分配装置发送的第一带宽响应消息，所述第一带宽响应消息包括第一带宽授予信息，所述第一带宽授予信息为分配给所述用户侧设备的与所述第一业务对应的带宽信息。
所述第二转换单元505用于根据所述第一带宽响应消息，获得第二带宽响应消息，所述第二带宽响应消息包括所述第一带宽授予信息。具体地，所述第二转换单元505用于对所述第一带宽响应消息进行协议格式转换，以获得所述第二带宽响应消息。
所述第二发送单元506用于向所述用户侧设备发送所述第二带宽响应消息。其中，所述第二发送单元506和所述第二转换单元505可以设置与一个物理部件中。
举例说明，所述第一带宽请求消息还包括第一业务标识和第一优先级信息中的至少一个，所述第一优先级信息用于标识所述第一业务的优先级，所述第一业务标识用于标识所述第一业务。
举例说明，所述第一带宽请求消息与所述第一带宽响应消息基于相同的协议，所述第一带宽请求消息基于互联网IP协议或以太网协议；
所述第二带宽请求消息与所述第一带宽请求消息基于不同的协议，所述第二带宽响应消息与所述第二带宽请求消息基于相同的协议。
在一种实现方式中，所述第一带宽响应消息还包括第二带宽授予信息，所述第二带宽授予信息为分配给所述用户侧设备的与第二业务对应的带宽信息。所述第一接收单元501还用于接收所述用户侧设备发送的第二带宽需求，所述第二带宽需求为用于完成所述第二业务传输所需的带宽；所述第一转换单元502还用于将所述第二带宽需求添加至所述第一带宽请求消息中；所述第二转换单元505还用于从所述第一带宽响应消息中获取所述第二带宽授予信息；所述第二发送单元506还用于向所述用户侧设备发送所述第二带宽授予信息。
图4(c)为本申请实施例提供的第二接入设备的结构示意图。本申请实施例提供的第二接入设备可包括图4(b)所示的消息转换装置。所述第二接入设备还包括第三接收单元507和带宽配置单元508。所述第三接收单元507用于接收第一接收设备发送的第三带宽响应消息，所述第三带宽响应消息包括第三带宽授予信息，所述第三带宽授予信息为分配给所述第二接入设备的与所述第一业务对应的带宽信息。所述带宽配置单元508用于根据所述第三带宽授予信息，完成带宽配置。其中，所述第三带宽授予信息可参看与图2(a)对应的实施例中的第二带宽授予信息。
本申请实施例还提供了一种第一接入设备。所述第一接入设备包括接收单元、转换单元和发送单元。所述接收单元用于接收带宽分配装置发送的第一带宽响应消息，所述第一带宽响应消息包括带宽授予信息，所述带宽授予信息为分配给第二接入设备的与业务对应的带宽信息。所述转换单元用于对所述第一带宽响应消息进行协议格式转换，获得第二带宽响应消息，所述第二带宽响应消息包括所述带宽授予信息。所述发送单元用于向所述第二接入设备发送所述第二带宽响应消息。所述带宽授予信息可参看图2(a)对应的实施例中的第二带宽授予信息。
举例说明，所述第一带宽响应消息与所述第二带宽响应消息基于不同的协议，所述第一带宽响应消息可以是基于IP的消息，所述第二带宽响应消息可以是基于PON的消息。
图5(a)为本申请实施例提供的带宽分配装置的结构示意图。该实施例中的带宽分配装置可以是图2(a)、图2(b)或图4(a)的实施例中的带宽分配装置。本实施例是从硬件实现来对带宽分配装置的结构进行说明。该实施例中的带宽分配装置包括：处理器601、存储器602和通信接口603。所述处理器601、所述存储器602和所述通信接口603通过通信总线604连接。所述存储器602用于存储程序。所述处理器601根据从所述存储器602 中读取的程序所包括的可执行指令，执行上述实施例一或实施例二中的带宽分配装置所执行的方法步骤。所述处理器601可通过通信接口603收发带宽请求消息和带宽响应消息。
图5(b)为本申请实施例提供的消息转换装置的结构示意图。该实施例中的消息转换装置可以设置于图2(a)、图2(b)的实施例中的ONU。该实施例中的消息转换装置与图4(b)的消息转换装置可以是同一设备。本实施例是从硬件实现来对消息转换装置的结构进行说明。该实施例中的消息转换装置包括：处理器701、存储器702和通信接口703。所述处理器701、所述存储器702和所述通信接口703通过通信总线704连接。所述存储器702用于存储程序。所述处理器701根据从所述存储器702中读取的程序所包括的可执行指令，执行上述实施例一或实施例二中的ONU所执行的方法步骤。所述处理器701可通过通信接口703收发带宽请求消息和带宽响应消息。
本申请实施例提供了一种第二接入设备。所述接入设备可包括图5(b)对应的实施例提供的消息转换装置。该实施例中的第二接入设备实现接收来自第一接入设备的带宽响应消息的部件可以为图5(b)中的通信接口703。所述第二接入设备可采用图5(b)的处理器701来进行带宽配置，即根据来自所述第一接入设备的带宽响应消息中的带宽授予信息，完成带宽配置。所述第二接入设备也可采用不同于通信接口703的接口，接收来自所述第一接入设备的带宽响应消息。所述第二接入设备可采用不同于处理器701的处理器，来进行带宽配置，在此不再逐一举例说明。
图6(a)为本申请实施例提供的带宽调度系统的结构示意图。该实施例提供的带宽调度系统可包括图4(a)所示的带宽分配装置和图4(b)所示的消息转换装置。所述带宽分配装置和所述消息转换装置的具体内容可参见图4(a)和图4(b)的相关内容，在此不再赘述。在另一种实现方式中，本申请实施例提供的带宽调度系统还可包括图5(a)的带宽分配装置和图5(b)的消息转换装置，在此不再对上述两个设备在进行赘述。
图6(b)为本申请实施例提供的带宽调度系统的结构示意图。如图6(b)所示的带宽调度系统，电缆(cable)设备转换模块可以为设置于固网的接入设备中的消息转换装置，PON设备转换模块可以为置于PON网络的接入设备中的消息转换模块，无线设备转换模块可以为置于无线网络的接入设备中的消息转换模块。
以cable设备转换模块为例，cable设备转换模块包括有线数据传输业务接口规范(data over cable service interface specification，DOCSIS)带宽请求接收模块、高优先级队列、低优先级队列、带宽请求消息转换模块、授予(grant)消息转换模块和DOCSIS grant发送模块。cable设备转换模块包括的DOCSIS带宽请求接收模块接收来自用户侧设备的DOCSIS请求消息，该消息可以表示为DOCSIS Req.消息，该消息可以是MAC帧。DOCSIS请求消息所携带的参数可参看图2(a)和图2(b)中的第二带宽请求消息。cable设备转换模块包括的DOCSIS带宽请求接收模块可根据DOCSIS Req.消息中携带的优先级信息，将DOCSIS Req.消息放入高优先级队列或低优先级队列中。cable设备转换模块中的带宽请求消息转换模块优先读取高优先级队列中的消息，在高优先级队列变为空之后再读取低优先级队列中的消息。cable设备转换模块中的带宽请求消息转换模块将读取到的消息进行格式转换，转换成基于IP的带宽请求消息，具体可表示为BW Req.over IP。cable设备转换模块中的带宽请求消息转换模块向带宽分配装置发送基于IP的带宽请求消息。基于IP的带宽请求消息所携带的参数可参看图2(a)和图2(b)中的第一带宽请求消息。cable设备转换模块中的grant消息转换模块接收带宽分配装置的基于IP的带宽授权消息，具体可表 示为BW Grant over IP，该消息所携带的参数可参看图2(a)和图2(b)中的第一带宽响应消息。cable设备转换模块中的grant消息转换模块将基于IP的带宽授予消息转换为带宽授予消息，具体可表示为DOCSIS Grant消息，该消息为MAC帧，并发送至DOCSIS grant发送模块。DOCSIS grant发送模块向用户侧设备发送DOCSIS Grant消息。带宽授予消息所携带的参数可参看图2(a)和图2(b)中的第二带宽响应消息。
以PON设备转换模块为例，PON设备转换模块包括PON带宽请求接收模块、高优先级队列、低优先级队列、带宽请求消息转换模块、grant消息转换模块和PON grant发送模块。PON设备转换模块包括的PON带宽请求接收模块接收来自用户侧设备的PON请求消息，该消息可以表示为PON Req.消息，该消息可以是MAC帧。PON请求消息所携带的参数可参看图2(a)和图2(b)中的第二带宽请求消息。PON设备转换模块包括的PON带宽请求接收模块可根据PON Req.消息中携带的优先级信息，将PON Req.消息放入高优先级队列或低优先级队列中。PON设备转换模块中的带宽请求消息转换模块优先读取高优先级队列中的消息，在高优先级队列变为空之后再读取低优先级队列中的消息。PON设备转换模块中的带宽请求消息转换模块将读取到的消息进行格式转换，转换成基于IP的带宽请求消息，具体可表示为BW Req.over IP。PON设备转换模块中的带宽请求消息转换模块向带宽分配装置发送基于IP的带宽请求消息。基于IP的带宽请求消息所携带的参数可参看图2(a)和图2(b)中的第一带宽请求消息。PON设备转换模块中的grant消息转换模块接收带宽分配装置的基于IP的带宽授权消息，具体可表示为BW Grant over IP，该消息所携带的参数可参看图2(a)和图2(b)中的第一带宽响应消息。PON设备转换模块中的grant消息转换模块将基于IP的带宽授予消息转换为带宽授予消息，具体可表示为PON Grant消息，该消息为MAC帧，并发送至PON grant发送模块。PON grant发送模块向用户侧设备发送PON Grant消息。带宽授予消息所携带的参数可参看图2(a)和图2(b)中的第二带宽响应消息。
以无线设备转换模块为例，无线设备转换模块包括有无线带宽请求接收模块、高优先级队列、低优先级队列、带宽请求消息转换模块、grant消息转换模块和无线grant发送模块。无线设备转换模块包括的无线带宽请求接收模块接收来自用户侧设备的无线请求消息，该消息可以表示为无线Req.消息，该消息可以是MAC帧。无线请求消息所携带的参数可参看图2(a)和图2(b)中的第二带宽请求消息。无线设备转换模块包括的无线带宽请求接收模块可根据无线Req.消息中携带的优先级信息，将无线Req.消息放入高优先级队列或低优先级队列中。无线设备转换模块中的带宽请求消息转换模块优先读取高优先级队列中的消息，在高优先级队列变为空之后再读取低优先级队列中的消息。无线设备转换模块中的带宽请求消息转换模块将读取到的消息进行格式转换，转换成基于IP的带宽请求消息，具体可表示为BW Req.over IP。无线设备转换模块中的带宽请求消息转换模块向带宽分配装置发送基于IP的带宽请求消息。基于IP的带宽请求消息所携带的参数可参看图2(a)和图2(b)中的第一带宽请求消息。无线设备转换模块中的grant消息转换模块接收带宽分配装置的基于IP的带宽授权消息，具体可表示为BW Grant over IP，该消息所携带的参数可参看图2(a)和图2(b)中的第一带宽响应消息。无线设备转换模块中的grant消息转换模块将基于IP的带宽授予消息转换为带宽授予消息，具体可表示为无线Grant消息，该消息为MAC帧，并发送至无线grant发送模块。无线grant发送模块向用户侧设备发送无线Grant消息。带宽授予消息所携带的参数可参看图2(a)和图2(b)中的第二带 宽响应消息。
图6(c)为本申请实施例提供的带宽调度方法的一种场景示意图。如图6(c)所示的场景中，带宽分配装置可以是图2(a)或图2(b)中的带宽分配装置。DOCSIS Req可以是图2(a)或图2(b)中的第二带宽请求消息。BW Req over IP可以是图2(a)或图2(b)中的第一带宽请求消息。带宽分配装置发送至ONU的BW Grant over IP可以是图2(a)或图2(b)中的第一带宽响应消息。带宽分配装置发送至OLT的BW Grant over IP可以是图2(a)或图2(b)中的第三带宽响应消息。OLT发送给ONU的PON Grant可以是实施例一中的第四带宽响应消息，或者是实施例二中协议格式转换后的第三带宽响应消息。DOCSIS Grant可以是图2(a)或图2(b)中的第二带宽响应消息。图6(c)中的ONU内置有cable设备。
图6(d)为本申请实施例提供的带宽调度方法的另一种场景示意图。如图6(c)所示的场景中，带宽分配装置可以是图2(a)或图2(b)中的带宽分配装置。Wireless Req可以是图2(a)或图2(b)中的第二带宽请求消息。BW Req over IP可以是图2(a)或图2(b)中的第一带宽请求消息。带宽分配装置发送至ONU的BW Grant over IP可以是图2(a)或图2(b)中的第一带宽响应消息。带宽分配装置发送至OLT的BW Grant over IP可以是图2(a)或图2(b)中的第三带宽响应消息。OLT发送给ONU的PON Grant可以是实施例一中的第四带宽响应消息，或者是实施例二中协议格式转换后的第三带宽响应消息。Wireless Grant可以是图2(a)或图2(b)中的第二带宽响应消息。图6(d)中的ONU内置Wireless的AP或BS功能。
在另一种实现方式中，本申请实施例提供的消息转换装置可置于第二接入设备之外，通过与所述第二接入设备间的协议，实现带宽请求消息和带宽响应消息的收发。
本申请实施例中所提及的通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器。结合本发明实施例所公开的方法的步骤，可以直接体现为处理器中的硬件及软件模块组合执行完成。当使用软件实现时，可以将实现上述功能的代码存储在计算机可读介质中。计算机可读介质包括计算机存储介质。存储介质可以是计算机能够存取的任何可用介质。以此为例但不限于：计算机可读介质可以是随机存取存储器(random-access memory，RAM)、只读存储器(read-only memory，ROM)、电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disk read-only memory，CD-ROM)或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。计算机可读介质可以是压缩碟(compact disk，CD)、激光碟、数字视频光碟(digital video disk，DVD)、软盘或者蓝光碟。
需要说明的是，本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。对于装置类实施例而言，由于其与方法实施例基本相似，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。
对所公开的实施例的上述说明，使本领域技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (17)

  1. 一种带宽调度方法，其特征在于，所述方法包括：
    带宽分配装置接收消息转换装置发送的带宽请求消息，所述带宽请求消息包括带宽需求，所述带宽需求为用于完成业务传输所需的带宽；
    所述带宽分配装置根据所述带宽需求，计算获得第一带宽授予信息和第二带宽授予信息，所述第一带宽授予信息为分配给用户侧设备的与所述业务对应的带宽信息，所述第二带宽授予信息为分配给第二接入设备的与所述业务对应的带宽信息；
    所述带宽分配装置向所述消息转换装置发送第一带宽响应消息，向所述第一接入设备发送第二带宽响应消息，所述第一带宽响应消息包括所述第一带宽授予信息，所述第二带宽响应消息包括所述第二带宽授予信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一带宽授权信息包括第一时间信息和第一频率信息中的至少一个，所述第一时间信息包括第一时间片的起点和第一时间片的长度，所述第一频率信息包括第一频段的中心频率和第一频段的频率宽度，所述第一时间片的起点为所述用户侧设备发送所述业务的起始时刻，所述第一时间片的长度为所述用户侧设备发送所述业务的有效时长，所述第一频段为所述用户侧设备发送所述业务的频率范围。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第二带宽授予信息包括第二时间信息和第二频率信息中的至少一个，所述第二时间信息包括第二时间片的起点和第二时间片的长度，所述第二频率信息包括第二频段的中心频率和第二频段的频率宽度，所述第二时间片的起点为所述第二接入设备发送所述业务的起始时刻，所述第二时间片的长度为所述第二接入设备发送所述业务的有效时长，所述第二频段为所述第二接入设备发送所述业务的频率范围。
  4. 根据权利要求1至3任意一项所述的方法，其特征在于，所述带宽请求消息还包括业务标识和优先级信息中的至少一个，所述优先级信息用于标识所述业务的优先级，所述业务标识用于标识所述业务。
  5. 根据权利要求1至4任意一项所述的方法，其特征在于，所述第一带宽响应消息和所述第二带宽响应消息为基于IP协议的消息，或者
    所述第一带宽响应消息和所述第二带宽响应消息为以太网封装的消息。
  6. 一种带宽调度方法，其特征在于，所述方法包括：
    消息转换装置接收用户侧设备发送的第二带宽请求消息，所述第二带宽请求消息包括第一带宽需求，所述第一带宽需求为用于完成第一业务传输所需的带宽；
    所述消息转换装置根据所述第二带宽请求消息，获得第一带宽请求消息，所述第一带宽请求消息包括所述第一带宽需求；
    所述消息转换装置向带宽分配装置发送所述第一带宽请求消息；
    所述消息转换装置接收所述带宽分配装置发送的第一带宽响应消息，所述第一带宽响应消息包括第一带宽授予信息，所述第一带宽授予信息为分配给所述用户侧设备的与所述第一业务对应的带宽信息；
    所述消息转换装置根据所述第一带宽响应消息，获得第二带宽响应消息，所述第二带宽响应消息包括所述第一带宽授予信息；
    所述消息转换装置向所述用户侧设备发送所述第二带宽响应消息。
  7. 根据权利要求6所述的方法，其特征在于，所述第一带宽授权信息包括第一时间信息和第一频率信息中的至少一个，所述第一时间信息包括第一时间片的起点和第一时间片的长度，所述第一频率信息包括第一频段的中心频率和第一频段的频率宽度，所述第一时间片的起点为所述用户侧设备发送所述业务的起始时刻，所述第一时间片的长度为所述用户侧设备发送所述业务的有效时长，所述第一频段为所述用户侧设备发送所述业务的频率范围。
  8. 根据权利要求6或7所述的方法，其特征在于，所述第一带宽请求消息还包括第一业务标识和第一优先级信息中的至少一个，所述第一优先级信息用于标识所述第一业务的优先级，所述第一业务标识用于标识所述第一业务。
  9. 根据权利要求6至7任意一项所述的方法，其特征在于，所述第一带宽请求消息与所述第一带宽响应消息基于相同的协议，所述第一带宽请求消息基于互联网IP协议或以太网协议；
    所述第二带宽请求消息与所述第一带宽请求消息基于不同的协议，所述第二带宽响应消息与所述第二带宽请求消息基于相同的协议。
  10. 根据权利要求6至9任意一项所述的方法，其特征在于，所述第一带宽响应消息还包括第二带宽授予信息，所述第二带宽授予信息为分配给所述用户侧设备的与第二业务对应的带宽信息，所述方法还包括：
    所述消息转换装置接收所述用户侧设备发送的第二带宽需求，所述第二带宽需求为用于完成所述第二业务传输所需的带宽；
    所述消息转换装置将所述第二带宽需求添加至所述第一带宽请求消息中；
    所述消息转换装置从所述第一带宽响应消息中获取所述第二带宽授予信息；
    所述消息转换装置向所述用户侧设备发送所述第二带宽授予信息。
  11. 一种带宽分配装置，其特征在于，所述带宽分配装置包括：
    接收单元，用于接收消息转换装置发送的带宽请求消息，所述带宽请求消息包括带宽需求，所述带宽需求为用于完成业务传输所需的带宽；
    计算单元，用于根据所述带宽需求，计算获得第一带宽授予信息和第二带宽授予信息，所述第一带宽授予信息为分配给用户侧设备的与所述业务对应的带宽信息，所述第二带宽授予信息为分配给第二接入设备的与所述业务对应的带宽信息；
    发送单元，用于向所述消息转换装置发送第一带宽响应消息，向所述第一接入设备发送第二带宽响应消息，所述第一带宽响应消息包括所述第一带宽授予信息，所述第二带宽响应消息包括所述第二带宽授予信息。
  12. 根据权利要求11所述的装置，其特征在于，所述带宽请求消息还包括业务标识和优先级信息中的至少一个，所述优先级信息用于标识所述业务的优先级，所述业务标识用于标识所述业务。
  13. 一种消息转换装置，其特征在于，所述消息转换装置包括：
    第一接收单元，用于接收用户侧设备发送的第二带宽请求消息，所述第二带宽请求消息包括第一带宽需求，所述第一带宽需求为用于完成第一业务传输所需的带宽；
    第一转换单元，用于根据所述第二带宽请求消息，获得第一带宽请求消息，所述第一带宽请求消息包括所述第一带宽需求；
    第一发送单元，用于向带宽分配装置发送所述第一带宽请求消息；
    第二接收单元，用于接收所述带宽分配装置发送的第一带宽响应消息，所述第一带宽响应消息包括第一带宽授予信息，所述第一带宽授予信息为分配给所述用户侧设备的与所述第一业务对应的带宽信息；
    第二转换单元，用于根据所述第一带宽响应消息，获得第二带宽响应消息，所述第二带宽响应消息包括所述第一带宽授予信息；
    第二发送单元，用于向所述用户侧设备发送所述第二带宽响应消息。
  14. 根据权利要求13所述的消息转换装置，其特征在于，所述第一带宽请求消息还包括第一业务标识和第一优先级信息中的至少一个，所述第一优先级信息用于标识所述第一业务的优先级，所述第一业务标识用于标识所述第一业务。
  15. 根据权利要求13或14所述的消息转换装置，其特征在于，所述第一带宽请求消息与所述第一带宽响应消息基于相同的协议，所述第一带宽请求消息基于互联网IP协议或以太网协议；
    所述第二带宽请求消息与所述第一带宽请求消息基于不同的协议，所述第二带宽响应消息与所述第二带宽请求消息基于相同的协议。
  16. 根据权利要求13至15任意一项所述的消息转换装置，其特征在于，所述第一带宽响应消息还包括第二带宽授予信息，所述第二带宽授予信息为分配给所述用户侧设备的与第二业务对应的带宽信息，
    所述第一接收单元还用于接收所述用户侧设备发送的第二带宽需求，所述第二带宽需求为用于完成所述第二业务传输所需的带宽；
    所述第一转换单元还用于将所述第二带宽需求添加至所述第一带宽请求消息中；
    所述第二转换单元还用于从所述第一带宽响应消息中获取所述第二带宽授予信息；
    所述第二发送单元还用于向所述用户侧设备发送所述第二带宽授予信息。
  17. 一种带宽调度系统，其特征在于，该系统包括权利要求11或12所述的带宽分配装置，和权利要求13至16任一项所述的消息转换装置。
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