WO2015135199A1 - 带宽分配方法、装置和系统 - Google Patents

带宽分配方法、装置和系统 Download PDF

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Publication number
WO2015135199A1
WO2015135199A1 PCT/CN2014/073440 CN2014073440W WO2015135199A1 WO 2015135199 A1 WO2015135199 A1 WO 2015135199A1 CN 2014073440 W CN2014073440 W CN 2014073440W WO 2015135199 A1 WO2015135199 A1 WO 2015135199A1
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WIPO (PCT)
Prior art keywords
channel
bandwidth
requesting device
network control
control node
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PCT/CN2014/073440
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English (en)
French (fr)
Inventor
范小菁
王昊
田军
Original Assignee
富士通株式会社
范小菁
王昊
田军
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 富士通株式会社, 范小菁, 王昊, 田军 filed Critical 富士通株式会社
Priority to PCT/CN2014/073440 priority Critical patent/WO2015135199A1/zh
Publication of WO2015135199A1 publication Critical patent/WO2015135199A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/52Allocation or scheduling criteria for wireless resources based on load

Definitions

  • the present invention relates to the field of communications, and in particular, to a bandwidth allocation method, apparatus, and system. Background technique
  • FIG. 1 is a schematic diagram of channel division in the current 45 GHz band. As shown in Figure 1, each 1.08 GHz channel is further divided into two 540 MHz channels, which can be accessed by using primary and secondary channel MAC control channels to avoid interference between overlapping channels. Each of the 1.08 GHz and 540 MHz overlapped with them defines one of the 540 MHz channels as the primary channel and the other two as the secondary channels.
  • the control information is transmitted on the primary channel, and the wireless device negotiates the transmission of control data on the primary channel or the secondary channel by interacting with the control information on the primary channel.
  • Embodiments of the present invention provide a bandwidth allocation method, apparatus, and system to support data transmission of a larger bandwidth and increase a data transmission rate.
  • a first aspect of the embodiments of the present invention provides a bandwidth allocation apparatus, which is applied to a network control node, where the apparatus includes:
  • a first sending unit when the network control node does not have enough available bandwidth allocated to the contention-free data transmission scheduling period (SP) requesting device, sending a primary channel scanning indication message to the SP requesting device, indicating The SP requesting device performs channel scanning on the candidate primary channel;
  • SP contention-free data transmission scheduling period
  • An allocating unit which allocates an SP for performing data transmission to the SP requesting device according to a scan report sent by the SP requesting device;
  • a second sending unit that sends SP scheduling information to the SP requesting device, indicating binding information of a logical channel used for transmitting the data, so that the SP requesting device performs communication on the bound channel.
  • a second aspect of the embodiments of the present invention provides a bandwidth allocation apparatus, which is applied to an SP requesting device, where the apparatus includes:
  • a sending unit which sends an SP request message to the network control node, where the SP request message includes a request bandwidth, a source node, a destination node, and a length of time for requesting transmission;
  • a scanning unit configured to perform channel scanning on the candidate primary channel indicated by the primary channel scanning indication message according to the received primary channel scanning indication message sent by the network control node;
  • a reporting unit which sends a scan report of the channel scan to the network control node
  • a communication unit configured to perform communication on the bound channel indicated by the SP scheduling information according to the received SP scheduling information sent by the network control node.
  • a third aspect of the embodiments of the present invention provides a communication system, where the communication system includes a network control node and an SP requesting device, where
  • the network control node is configured to: when there is insufficient available bandwidth allocated to the SP requesting device, send a primary channel scan indication message to the SP requesting device, instructing the SP requesting device to perform channel scanning on the candidate primary channel; And assigning an SP for performing data transmission to the SP requesting device according to the scan report sent by the SP requesting device, and sending SP scheduling information to the SP requesting device, indicating binding information of a logical channel used for transmitting the data, In order for the SP requesting device to communicate on the bonded channel.
  • the SP requesting device is configured to: send an SP request message to the network control node, where the SP request message includes a request bandwidth, a source node, a destination node, and a length of time for requesting transmission; according to the received network control node a primary channel scan indication message, performing channel scanning on the candidate primary channel indicated by the primary channel scan indication message; transmitting a scan report of the channel scan to the network control node; according to the received network control node
  • the SP scheduling information is communicated on the bound channel indicated by the SP scheduling information.
  • Figure 1 is a schematic diagram of channel division in the current 45 GHz band
  • Embodiment 3 is a schematic diagram of channel bonding with an allocated bandwidth of 1.08 GHz in Embodiment 1 of the present invention
  • Embodiment 4 is a schematic diagram of channel bonding with an allocated bandwidth of 2.16 GHz in Embodiment 1 of the present invention
  • Figure 5 is a block diagram showing the structure of a bandwidth allocation apparatus in Embodiment 2 of the present invention.
  • FIG. 6 is a schematic diagram showing the structure of a network control node in Embodiment 3 of the present invention.
  • Figure 8 is a flow chart showing an embodiment of step 704 in Embodiment 4 of the present invention.
  • FIG. 9 is a schematic diagram of a beacon frame transmission of a channel-bound SP under a fixed primary channel according to Embodiment 4 of the present invention
  • FIG. 10 is a schematic diagram of a beacon frame transmission of a channel-bound SP under a non-fixed primary channel according to Embodiment 4 of the present invention
  • 11 is a schematic structural diagram of a bandwidth allocation apparatus in Embodiment 5 of the present invention
  • Figure 12 is a block diagram showing the structure of an SP requesting device in Embodiment 6 of the present invention. detailed description
  • the supported data transmission bandwidth is one 540MHz and two 540MHz and 1.08GHz.
  • an embodiment of the present invention provides a bandwidth allocation method, by which multiple consecutive or discontinuous physical channels can be bound together to form a logical channel, thereby implementing a more Large channel bandwidth to support larger transmission rates.
  • the MAC mechanism required for channel bonding is provided for the primary and secondary channel frames of the 45 GHz band, and finally the channel bandwidth of 2.16 GHz can be achieved to achieve a higher peak speed in the 45 GHz band -
  • Embodiment 1 of the present invention provides a bandwidth allocation method
  • FIG. 2 is a flowchart of the method, which is applied to a control node in a network, such as a PCP (Personal Basic Service Set Control Point) or AP (Access Point, access point).
  • PCP Personal Basic Service Set Control Point
  • AP Access Point, access point
  • FIG. 2 the method includes:
  • Step 201 When the network control node does not have enough available bandwidth allocated to the contention-free data transmission scheduling (SP) requesting device, the network control node sends a primary channel scanning indication message to the SP requesting device, indicating that the SP requesting device is in the candidate primary channel. Perform channel scanning on;
  • SP contention-free data transmission scheduling
  • Step 202 The network control node allocates an SP for performing data transmission to the SP requesting device according to the scan report sent by the SP requesting device.
  • Step 203 The network control node sends SP scheduling information to the SP requesting device, indicating binding information of a logical channel used for transmitting the data, so that the SP requesting device performs communication on the bound channel.
  • the SP requesting device sends an SP to the network control node according to its own data transmission status. Soliciting, to request the SP, if the requested bandwidth of the SP exceeds the currently available channel resources that the network control node can allocate, the network control node may send a primary channel scan indication message to the SP requesting device, indicating the SP request. The device scans the candidate primary channel indicated by the primary channel indication message.
  • the network control node does not have enough available bandwidth allocated to the contention-free data transmission scheduling period (SP) requesting device to include the following conditions: for example, when the SP requested by the BSS device requires a bandwidth greater than the maximum channel bandwidth of the current frequency band, or requests The SP requires a bandwidth that is less than the maximum channel bandwidth of the current band, but the current remaining unallocated channel bandwidth in the network is less than the requested bandwidth.
  • the network control node sends the primary channel scan indication information to the SP requesting device, instructing the SP requesting device to switch to the candidate primary channel and scanning and listening to the candidate scan channel, so as to obtain the data scheduling transmission situation on the candidate primary channel.
  • the network control node may indicate all possible channels except the currently working primary channel (corresponding to flexible selection) In the case of the primary channel, all primary channels other than the currently active primary channel (corresponding to the case of a fixed primary channel) may also be indicated.
  • the network control information must be transmitted on the primary channel.
  • the supported data transmission bandwidth is 540 MHz, two 540 MHz and 1.08 GHz.
  • the remaining unallocated channel bandwidth is less than the requested bandwidth, or when the SP requesting device requires a bandwidth greater than 1.08 GHz, that is, if the network control node does not have enough available bandwidth allocated to the SP requesting device, then in the case of fixed primary channel selection, In each 1.08 GHz channel, only the high or low 540 MHz channels defined as the main channel are scanned to obtain data scheduling transmission conditions on the entire 1.08 GHz channel, and in the case of flexible selection of the primary channel, for each 1.08 GHz channel. It is necessary to scan two 540 MHz channels overlapping the 1.08 GHz channel in order to be able to obtain data scheduling transmission information on the entire 1.08 GHz channel.
  • the primary channel scan indication message may include: a scan node address; a scan channel number; and a scan time.
  • the scan node address indicates an address of the SP requesting device, indicating a device that needs to perform a main channel scan; the scan channel number indicates a channel ID of the candidate primary channel, and the scan channel number may include one or more; scan time indication indication
  • the SP requests the device to scan and listen to the time of the other candidate primary channel.
  • the channel scan time can be set to be greater than the time aMaxBIDuaration of any network beacon interval. This embodiment is not limited thereto.
  • the SP requesting device performs according to the primary channel scan indication message sent by the network control node. After the scanning of the primary channel, the scanning result, that is, the primary channel scanning report, is reported to the network control node, which will be specifically described in the following embodiments.
  • step 202 the network control node according to the received primary channel scan report, according to the other channel SP and/or CBAP scheduling information indicated in the report, combined with the locally saved current primary channel SP/CBAP scheduling information, has sufficient bandwidth When it is possible to allocate, the SP is requested to allocate an SP for data transmission.
  • the following takes the primary and secondary channel MAC framework of the 45 GHz band as an example, and describes the SP that the network control node allocates for the SP requesting device for data transmission.
  • the total bandwidth allocated is 1.08 GHz.
  • two consecutive 540 MHz channels may be used, and a single stream with a bandwidth of 1.08 GHz or two streams of 540 MHz may be used for parallel transmission.
  • two non-contiguous 540 MHz channels can be bound and transmitted in parallel with two data streams of 540 MHz bandwidth.
  • the continuous 540 MHz channel means that the two channels overlap with the same 1.08 GHz channel, as shown in Figure 3, channel 6 and channel 7, which overlap with channel 2; instead, the discontinuous 540 MHz channel refers to These two channels overlap with different 1.08 GHz channels, such as channel 7 and channel 9, as shown in Figure 3, which overlap with channel 2 and channel 3, respectively.
  • FIG. 3 is a schematic diagram of channel bonding with an allocated bandwidth of 1.08 GHz in the embodiment of the present invention.
  • the primary channel is fixed to a channel with a low frequency of 540 MHz.
  • SP1 is bound to two consecutive 540MHz channels, namely channel 6 and channel 7.
  • the data stream 1 between the source and destination nodes specified by SP1 is transmitted on channel 1.08 GHz channel 2, or may be between source and destination nodes.
  • Data stream 1 is transmitted in parallel on channel 6 and channel 7 at a bandwidth of 540 MHz (not shown); SP2 is bound to two discontinuous 540 MHz channels, namely channel 7 and channel 9, SP2 specified source, The two data streams (data streams 2 and 3) between the destination nodes are transmitted in parallel on channel 7 and channel 9 at a bandwidth of 540 MHz.
  • bandwidth allocation is achieved by channel bonding.
  • the total bandwidth allocated is 2.16 GHz.
  • two 1.08 GHz channels can be bound, and two data streams with a bandwidth of 1.08 GHz are transmitted in parallel; or a 1.08 GHz channel and two can also be bound.
  • a continuous 540MHz channel in which two data streams with a bandwidth of 1.08GHz can be transmitted in parallel, or a data stream with a bandwidth of 1.08GHz and two data streams with a bandwidth of 540MHz can be transmitted in parallel; Bind a 1.08 GHz channel and two discontinuous 540 MHz channels, and transmit a data stream with 1.08 GHz bandwidth and two 540 MHz bandwidths in parallel; or you can bind four consecutive or discontinuous 540 MHz channels.
  • the transmission mode may be any combination of a data stream of 1.08 GHz bandwidth or a parallel stream of data stream of 540 MHz bandwidth, but the data stream with a bandwidth of 1.08 GHz is only Transmission on two consecutive 540 MHz channels.
  • the meanings of "continuous” and “discontinuous” are the same as described above, and the description thereof is omitted here.
  • FIG. 4 is a schematic diagram of channel bonding with a total bandwidth of 2.16 GHz allocated in the embodiment of the present invention.
  • the primary channel is fixed to a channel with a low frequency of 540 MHz.
  • SP1 is bound to two 1.08 GHz channels, namely channel 1 and channel 2.
  • the two data streams (data stream 1 and stream 2) between the source and destination nodes specified by SP1 are respectively on the two 1.08 GHz channels.
  • SP2 is bound to four 540MHz channels, that is, channels 5, 6, 7, and 9.
  • Channels 6 and 7 overlap in a 1.08 GHz channel and 540 MHz channel 9 are transmitted in parallel.
  • the SP requesting device sends SP scheduling information, and the SP scheduling information indicates binding information of the logical channel used for transmitting the data, so that the SP requests the device to communicate on the bound channel.
  • the network control node may bind a plurality of consecutive or discontinuous physical channels together to form a logical channel for transmitting the data, and include binding information of the logical channel.
  • the SP scheduling information is used to indicate that the SP requesting device performs communication on the bound channel, where the SP scheduling information may be included in the beacon frame, or may be included in another unicast control frame sent to the SP requesting device. This embodiment is not limited thereto.
  • the SP scheduling information may include: an allocated bandwidth; a bound channel number; and SP allocation information.
  • the allocated bandwidth is the bandwidth allocated by the network control node for the SP requesting device;
  • the binding channel number is the physical channel ID number forming the logical channel;
  • the SP allocation information is information related to the SP allocation, for example: SP transmission
  • the above is only an exemplary description of the content included in the SP scheduling information, and the embodiment is not limited thereto.
  • the communication can be performed on the bound logical channel, which will be specifically described in the following embodiments.
  • the SP requesting device may be the source node specified by the SP, or may be the destination node specified by the SP.
  • the SP requesting device that performs the main channel scanning and the scan report reporting refers to the source node specified by the SP
  • the SP requesting device that receives the SP scheduling information is the source specified by the SP. Node and destination node.
  • the embodiment of the present invention further provides a bandwidth allocation device, which is applied to a network control node.
  • the principle of the bandwidth allocation device is similar to that of the first embodiment. Therefore, the specific implementation may refer to the embodiment 1. The implementation of the method, the same content will not be repeated.
  • the bandwidth allocation apparatus includes: a first sending unit 501, when the network control node does not have enough available bandwidth allocated to the SP requesting device, to the The SP requesting device sends a primary channel scan indication message, instructing the SP requesting device to perform channel scanning on the candidate primary channel;
  • the allocating unit 502 which allocates an SP for performing data transmission to the SP requesting device according to the scan report sent by the SP requesting device;
  • the second sending unit 503 sends SP scheduling information to the SP requesting device, indicating binding information of a logical channel used for transmitting the data, so that the SP requesting device performs communication on the bound channel.
  • the primary channel scan indication message includes: a scan node address; a scan channel number; and a scan time.
  • the SP scheduling information includes: an allocated bandwidth; a binding channel number; and SP allocation information.
  • the SP allocation information includes: a source node address of the SP transmission; a destination node address of the SP transmission;
  • SP start time SP duration.
  • the SP allocation information may further include: whether there is indication information of channel binding; and transmission mode indication information.
  • Embodiment 3 of the present invention provides a network control node, where the network control node includes the bandwidth allocation apparatus as described in Embodiment 2.
  • FIG. 6 is a schematic structural diagram of a network control node according to an embodiment of the present invention.
  • network control node 600 can include: a central processing unit (CPU) 620 and memory 610; and memory 610 is coupled to central processing unit 620.
  • the memory 610 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 620, and stores, for example, main channel scanning indication information, SP scheduling information, SP allocation information, and the like.
  • the functionality of the bandwidth allocation device can be integrated into the central processor 620.
  • the central processing unit 620 can be configured to: when there is insufficient available bandwidth allocated to the contention-free data transmission scheduling (SP) requesting device, send a primary channel scanning indication message to the SP requesting device, indicating the SP request The device performs channel scanning on the candidate primary channel; the SP requesting device allocates an SP for performing data transmission according to the scan report sent by the SP requesting device; and sends SP scheduling information to the SP requesting device, indicating that the The binding information of the logical channel used by the data, so that the SP requests the device to communicate on the bound channel.
  • SP contention-free data transmission scheduling
  • the primary channel scan indication message includes: a scan node address; a scan channel number; and a scan time.
  • the SP scheduling information includes: an allocated bandwidth; a binding channel number; and SP allocation information.
  • the SP allocation information includes: a source node address of the SP transmission; a destination node address of the SP transmission; an SP start time; and an SP duration.
  • the SP allocation information further includes: whether there is indication information of channel binding; and transmission mode indication information.
  • the bandwidth allocation device can be configured separately from the central processing unit 620.
  • the bandwidth allocation device can be configured as a chip connected to the central processing unit 620, and the function of the bandwidth allocation device can be implemented by the control of the central processing unit 620. .
  • the network control node 600 may further include: a sensor 601, a transceiver 604, a power module 605, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It should be noted that the network control node 600 does not have to include all of the components shown in FIG. 6. In addition, the network control node 600 may also include components not shown in FIG. 6, and reference may be made to the prior art.
  • the embodiment of the present invention provides a bandwidth allocation method, which is the process of the SP requesting device side corresponding to the method of the embodiment 1, and the same content as that of the embodiment 1 is not repeatedly described.
  • Figure 7 is a flow chart of the method. Referring to Figure 7, the method includes:
  • Step 701 The SP requests the device to send an SP request message to the network control node, where the SP request message includes the request bandwidth, the source node, the destination node, and the length of time for requesting the transmission;
  • Step 702 The SP requesting device performs channel scanning on the candidate primary channel indicated by the primary channel scan indication message according to the received primary channel scan indication message sent by the network control node.
  • Step 703 The SP requesting device sends a scan report of the channel scan to the network control node.
  • Step 704 The SP requesting device schedules the SP according to the received SP scheduling information sent by the network control node. Communication is performed on the bound channel indicated by the information.
  • the SP requesting device sends an SP request message to the network control node, where the SP request message includes a bandwidth required for data transmission, a source node for performing data transmission, and a destination node, and data transmission Information such as length of time.
  • step 702 when the network control node finds that there is not enough channel resource allocated to the SP requesting device, it sends a primary channel scan indication message to the SP requesting device, as described in Embodiment 1, and the description is omitted here.
  • the SP requesting device switches to the candidate primary channel indicated by the message according to the received primary channel scanning indication information, turns on the receiver, continuously monitors the scanning time in the corresponding primary channel scanning indication message, and receives the beacon frame.
  • the SP requesting device In step 703, the SP requesting device generates a scan report to report to the network control node according to the scan result.
  • the scan report includes: a primary channel number; a beacon frame list length; and a beacon frame information list.
  • the primary channel number corresponds to the ID number of the candidate primary channel scanned by the SP requesting device; the length of the beacon frame list indicates that the SP requesting device receives the network from different networks (the networks established by different BSSs) on the designated candidate primary channel.
  • the number of beacon frames; the beacon frame information list includes at least one record, each record corresponding to each beacon frame received by the SP requesting device when scanning the candidate primary channel, and may include: a network ID ; network control node address; beacon interval; and contention-free data transmission scheduling period (SP) and/or contention access period (CBAP) scheduling information.
  • the network ID indicates the network where the beacon frame is located
  • the network control node address indicates the address of the network control node of the network where the beacon frame is located
  • the beacon interval indicates the beacon interval of the network where the beacon frame is located
  • SP/CBAP indicates the data scheduling of the network where the beacon frame is located.
  • the SP requesting device may select to send some or all of the other channel data to be monitored and transmitted in accordance with the requirements of the data scheduling, which is not limited by this embodiment.
  • the scan report may include: an available bandwidth and a channel in which the available bandwidth is located.
  • the SP requesting device does not report the scan result, but analyzes and summarizes the channel occupancy according to the scan result, and only reports the available bandwidth on each channel, thereby the network control node can according to the available bandwidth.
  • the channel on which the available bandwidth is located allocates an SP for data transmission for the SP requesting device (the source node and the destination node designated by the SP).
  • the source node and the destination node specified by the SP may perform data transmission and/or reception on the bound channel indicated by the SP scheduling information.
  • the content of the SP scheduling information is the same as that of Embodiment 1, and details are not described herein again.
  • the source node may switch to the primary channel to which the bonded channel of the non-working channel belongs, and send a signal on the primary channel.
  • the frame frame completes the transmission of the beacon frame, and the source node and the destination node specified by the SP transmit data on the bound channel, and then switch back to the working channel after completing the data transmission.
  • the beacon frame herein may include: network control information included in a beacon frame sent by the network control node of the network to which the source node belongs; and SP scheduling information of the currently allocated bound channel.
  • the transmission of the beacon frame is also different according to different main channel definition modes, which will be described below with reference to the drawings.
  • FIG. 8 is a flowchart of an embodiment of a step 704 of the embodiment of the present invention. As shown in FIG. 8, in an implementation manner, the SP requesting device performs communication on the bound channel, including:
  • Step 801 If the bound channel includes a non-working channel, the SP requests the device to switch to the bound primary channel to which the non-working channel belongs;
  • the SP requesting device may switch to the primary channel described in the binding channel number at the SP start time in the SP scheduling information.
  • Step 802 The SP requesting device sends a beacon frame on the primary channel to which the bound non-working channel belongs.
  • the beacon frame may include: network control information included in a beacon frame sent by a network control node of a network to which the SP requesting device belongs, and currently allocated SP schedule information of the non-working channel bound to the non-working channel .
  • the network control information may include information such as a network ID, a network control node address, a beacon interval, and the like.
  • the SP requesting device sends the beacon frame on a primary channel to which the bound non-working channel belongs.
  • the primary channel to which the bound non-working channel belongs is a flexible selected primary channel
  • the bound channel is a channel of a first working bandwidth, for example, a channel of 540 MHz
  • the SP request The device sends the beacon frame on the channel of the first working bandwidth
  • the primary channel to which the bound non-working channel belongs is a flexible selected primary channel
  • the bound channel is a channel of a second working bandwidth, for example, a channel of 1.08 GHz
  • the SP The requesting device transmits the beacon frame on two channels of the first working bandwidth (for example, a channel of 540 MHz) that overlap with the channel of the second working bandwidth and whose channel bandwidth is smaller than the channel of the second working bandwidth.
  • Step 803 The SP requesting device sends data on the bound non-working channel and the bound working channel after the beacon frame is sent.
  • the SP requesting device may simultaneously send data on the bound non-working channel and the bound working channel after transmitting the beacon frame, or may also start SP in the SP scheduling information.
  • the data is sent on the bound working channel at the beginning of the time, and the data is sent on the bound non-working channel after the beacon frame is sent.
  • This embodiment is not limited thereto.
  • Step 804 The SP requesting device switches back to the working channel after sending the data.
  • the above embodiment will be described below by taking the first type of working channel as a channel of 540 MHz bandwidth and the channel of the second type of working channel being 1.08 GHz bandwidth as an example.
  • FIG. 9 is a schematic diagram of beacon frame transmission of a channel-bound SP under a fixed primary channel. As shown in FIG. 9, when the primary channel is fixed to a low 540 MHz channel overlapping each 1.08 GHz channel, it is assumed that the SP1 requests the working channel of the device.
  • the source node specified by SP1 (SP requesting device) first transmits a beacon frame during ⁇ 1 on the primary channel 6 to which the bound non-working channel 2 belongs, the beacon frame containing SP1 Scheduling information, after completion of the transmission of the beacon frame, start transmission of data 1 and 2 on the bound working channel 1 and the bound non-working channel 2 until SP1 ends, where data 1 and 2 can be simultaneously
  • the transmission of the frame frame ⁇ 1 is started after the transmission ends, or the transmission of the data 1 can start from the start time of the SP1, and the transmission of the data 2 can be started after the transmission of the beacon frame ⁇ 1.
  • the working channel of the SP2 requesting device is channel 3 of 1.08 GHz
  • the beacon frame contains scheduling information of SP2, after completing the transmission of the beacon frame, on the bound working channel 8, 9 and the bound non-working channel
  • the transmission of data 1, 2 and 3, 4 is performed on 6 and 7 until the end of SP2, wherein data 1, 2 and 3, 4 can be transmitted simultaneously after the end of the beacon frame BTI2 transmission, or the transmission of data 1, 2 can be
  • the start of SP2 begins, and the transmission of data 3, 4 can start from the end of the transmission of beacon frame BTI2.
  • the primary channel may be 540 MHz high or low in a 1.08 GHz channel, and different networks may select different primary channels. Control information such as transmission of beacon frames.
  • the bound non-working channel is a 1.08 GHz channel (eg, channel 2)
  • the source node specified by SP1 is at the beginning of SP1 at the overlapping two 540 MHz channels (eg, channels 6 and 7).
  • the beacon frame includes scheduling information of SP1, and after transmitting the beacon frame, starting transmission of data 1 and 2 on the bound working channel 1 and the bound non-working channel 2 until SP1 End, where data 1 and 2 can start transmission at the same time after the end of beacon frame ⁇ 1 transmission, or the transmission of data 1 can start from the start time of SP1, and the transmission of data 2 can start after the end of transmission of beacon frame ⁇ 1.
  • the bound non-working channel is a 540 MHz channel (eg, channels 5, 6, 7)
  • the source node specified by SP2 is to be on the bound non-working channel, ie 540 MHz channel, at the beginning of SP2 (eg, channels 5, 6) And 7) transmitting a beacon frame, where the beacon frame includes scheduling information of the SP2, and after completing the transmission of the beacon frame, starting data 1 on the bound working channel 9 and the bound non-working channel 5, 6, and 7.
  • data 1, 2 and 3 can start transmission at the same time after the end of the beacon frame BTI2 transmission, or the transmission of data 3 can start from the start time of SP2, the transmission of data 1 and 2 It can start after the end of the beacon frame BTI2 transmission.
  • the device that sends the SP request may be the source node of the SP
  • the device that receives the SP scheduling information may be the source node of the SP, the destination node of the SP, or the source node and the destination node of the SP. , as mentioned, it will not be described here.
  • the embodiment of the present invention further provides a bandwidth allocation device, which is applied to an SP requesting device.
  • the principle of solving the problem by the bandwidth allocation device is similar to the method of Embodiment 4, and therefore, the specific implementation may refer to The implementation of the method of Embodiment 4 will not be repeated.
  • the bandwidth allocation apparatus includes: a sending unit 1101, which sends an SP request message to a network control node, where the SP request message includes a request bandwidth, a source node, a destination node, and The length of time the request is transmitted;
  • the scanning unit 1102 performs channel scanning on the candidate primary channel indicated by the primary channel scanning indication message according to the received primary channel scanning indication message sent by the network control node;
  • the reporting unit 1103 which sends a scan report of the channel scan to the network control node;
  • the communication unit 1104 is configured to perform communication on the bound channel indicated by the SP scheduling information according to the received SP scheduling information sent by the network control node.
  • the scan report includes: a primary channel number; a beacon frame list length; and a beacon frame information list.
  • the beacon frame information list includes at least one record, and each record corresponds to the
  • Each beacon frame received by the SP requesting device when scanning the candidate primary channel each record includes: a network ID; a network control node address; a beacon interval; and a contention-free data transmission scheduling period (SP) or a contention Incoming period (CBAP) scheduling information.
  • SP contention-free data transmission scheduling period
  • CBAP contention Incoming period
  • the scan report includes: an available bandwidth and a channel in which the available bandwidth is located.
  • the communication unit 1104 may further include:
  • the first switching module 11041 when the bound channel includes the non-working channel, switches to the primary channel to which the bound non-working channel belongs;
  • a first sending module 11042 configured to send a beacon frame of the network control node on the primary channel to which the bound non-working channel belongs;
  • a second sending module 11043 configured to send data on the bound non-working channel and the bound working channel after the beacon frame is sent;
  • a second switching module 11044 which switches back to the working channel after transmitting the data.
  • the SP requesting device sends the beacon frame on a primary channel to which the bound non-working channel belongs. If the primary channel to which the bound non-working channel belongs is a flexible selected primary channel, if the bound channel is the channel of the first working bandwidth, the SP requesting device is on the channel of the first working bandwidth Transmitting the beacon frame; if the primary channel to which the bound non-working channel belongs is a flexible selected primary channel, if the bound channel is the second a channel of a working bandwidth, the SP requesting device transmitting the beacon on a channel of two first working bandwidths that overlap with a channel of the second working bandwidth and whose channel bandwidth is smaller than a channel of the second working bandwidth frame.
  • Embodiment 6 of the present invention provides an SP requesting device, and the SP requesting device includes the bandwidth allocating device as described in Embodiment 5.
  • FIG. 12 is a schematic diagram showing the structure of an SP requesting device according to an embodiment of the present invention.
  • the SP requesting device 1200 can include: a central processing unit (CPU) 1220 and a memory 1210; the memory 1210 is coupled to the central processing unit 1220.
  • the memory 1210 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 1220, and stores such as a main channel scan report, SP scheduling information, SP allocation information, and the like.
  • the functionality of the bandwidth allocation device can be integrated into the central processor 1220.
  • the central processing unit 1220 may be configured to: send an SP request message to the network control node, where the SP request message includes a request bandwidth, a source node, a destination node, and a length of time for requesting transmission; according to the received network control node Transmitting a primary channel scan indication message, performing channel scanning on a candidate primary channel indicated by the primary channel scan indication message; transmitting a scan report of the channel scan to the network control node; according to the received network control node The transmitted SP scheduling information is communicated on the bound channel indicated by the SP scheduling information.
  • the central processor 1220 can be configured to: the scan report includes: a primary channel number; a beacon frame list length; and a beacon frame information list.
  • the beacon frame information list includes at least one record, where each record corresponds to each beacon frame received by the SP requesting device when scanning the candidate primary channel, and each record includes: a network ID; network control Node address; beacon interval; and contention-free data transmission scheduling period (SP) or contention access period (CBAP) scheduling information.
  • SP contention-free data transmission scheduling period
  • CBAP contention access period
  • the central processor 1220 can be configured to: the scan report includes: available bandwidth and a channel in which the available bandwidth is located.
  • the central processing unit 1220 may be further configured to: if the bound channel includes a non-working channel, And then switching to the bound primary channel to which the non-working channel belongs; transmitting a beacon frame of the network control node on the primary channel to which the bound non-working channel belongs; binding after transmitting the beacon frame Transmitting data on the non-working channel and the bound working channel; switching back to the working channel after transmitting the data.
  • the SP requesting device sends the beacon frame on a primary channel to which the bound non-working channel belongs;
  • the primary channel to which the bound non-working channel belongs is a flexible selected primary channel, and if the bound channel is the channel of the first working bandwidth, the SP requesting device sends the message on the channel of the first working bandwidth.
  • the primary channel to which the bound non-working channel belongs is a flexible selected primary channel, if the bound channel is the channel of the second working bandwidth, the SP requesting device is in the second working bandwidth
  • the beacon frame is transmitted on two channels of the first working bandwidth whose channel overlaps and whose channel bandwidth is smaller than the channel of the second working bandwidth.
  • the bandwidth allocation device can be configured separately from the central processing unit 1220.
  • the bandwidth allocation device can be configured as a chip connected to the central processing unit 1220, and the function of the bandwidth allocation device can be implemented by the control of the central processing unit 1220. .
  • the SP requesting device 1200 may further include: a sensor 1201, a transceiver 1204, a power module 1205, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It is to be noted that the SP requesting device 1200 does not necessarily have to include all of the components shown in Fig. 12; in addition, the SP requesting device 1200 may further include components not shown in Fig. 12, and reference may be made to the prior art.
  • a plurality of physical channels are bound to form a logical channel of a larger bandwidth for scheduling data transmission, thereby increasing the data transmission rate.
  • the embodiment of the present invention further provides a communication system, where the communication system includes a network control node and an SP requesting device, where
  • the network control node is configured to: when there is insufficient available bandwidth allocated to the SP requesting device, send a primary channel scan indication message to the SP requesting device, instructing the SP requesting device to perform channel scanning on the candidate primary channel; And assigning an SP for performing data transmission to the SP requesting device according to the scan report sent by the SP requesting device, and sending SP scheduling information to the SP requesting device, indicating binding information of a logical channel used for transmitting the data, In order for the SP requesting device to communicate on the bonded channel.
  • the SP requesting device is configured to: send an SP request message to the network control node, where the SP request message includes a request bandwidth, a source node, a destination node, and a length of time for requesting transmission; according to the received network control node a primary channel scan indication message, performing channel scanning on the candidate primary channel indicated by the primary channel scan indication message; transmitting a scan report of the channel scan to the network control node; according to the received network control node
  • the SP scheduling information is communicated on the bound channel indicated by the SP scheduling information.
  • the network control node may be the network control node described in Embodiment 3; the SP requesting device may be the SP requesting device described in Embodiment 6. The content thereof is incorporated herein and will not be described again here.
  • a plurality of physical channels are bound to form a logical channel of a larger bandwidth for scheduling data transmission, thereby increasing the data transmission rate.
  • Embodiments of the present invention also provide a computer readable program, wherein when the program is executed in a bandwidth allocation device or a network control node, the program causes a computer to execute Embodiment 1 in the bandwidth allocation device or network control node The bandwidth allocation method.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the bandwidth allocation method described in Embodiment 1 in a bandwidth allocation device or a network control node.
  • the embodiment of the present invention further provides a computer readable program, wherein the program causes a computer to execute Embodiment 4 in the bandwidth allocation device or the SP requesting device when the program is executed in a bandwidth allocation device or an SP requesting device The bandwidth allocation method.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the bandwidth allocation method described in Embodiment 4 in a bandwidth allocation device or an SP requesting device.
  • the above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like.
  • the invention also relates to A storage medium for storing the above programs, such as a hard disk, a magnetic disk, a compact disk, a DVD, a flash memory, or the like.
  • a storage medium for storing the above programs such as a hard disk, a magnetic disk, a compact disk, a DVD, a flash memory, or the like.

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Abstract

本发明实施例提供一种带宽分配方法、装置和系统。该方法包括:网络控制节点在没有足够的可用带宽分配给无竞争数据传输调度时期(SP)请求设备时,向所述SP请求设备发送主信道扫描指示消息,指示所述SP请求设备在候选主信道上进行信道扫描;所述网络控制节点根据所述SP请求设备发送的扫描报告为所述SP请求设备分配用于进行数据传输的SP;所述网络控制节点向所述SP请求设备发送SP调度信息,指示传输所述数据所用的逻辑信道的绑定信息,以便所述SP请求设备在绑定的信道上进行通信。通过本发明的实施例,将多个物理信道绑定,形成更大带宽的逻辑信道用于调度数据传输,由此提高了数据传输速率。

Description

带宽分配方法、 装置和系统 技术领域
本发明涉及通信领域, 特别涉及一种带宽分配方法、 装置和系统。 背景技术
在中国, 45GHz 部分频段已经划分用于无线局域网传输, 目前成为无线局域网 协议研究的热点。该频段的无线局域网传输协议设计目标是实现超过 IGbps的数据传 输速率。 然而, 动态带宽信道划分包括两种信道带宽, 540MHz和 1.08GHz。 图 1是 目前 45GHz频段的信道划分示意图, 如图 1所示, 每个 1.08GHz信道进一步划分为 两个 540MHz信道, 可以采用主副信道 MAC控制信道接入, 以避免重叠信道之间传 输干扰。 其中每个 1.08GHz及与其重叠的 540MHz为一组, 定义其中一个 540MHz 信道为主信道, 其它两个为副信道。控制信息在主信道传输, 无线设备通过在主信道 交互控制信息, 协商控制数据在主信道或副信道的传输。
未来, 随着业务的发展, 更大信道带宽的数据传输要求成为可能, 例如 2.16GHz 的信道带宽, 然而目前的系统并不支持这种大信道带宽的数据传输, 因此, 如何实现 更大信道带宽的数据传输,同时避免与其它信道的数据传输之间的干扰成为业界的研 究方向。
应该注意, 上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、 完整的说明, 并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发 明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。 发明内容
本发明实施例提供一种带宽分配方法、装置和系统,以支持更大带宽的数据传输, 提高数据传输速率。
本发明实施例的第 1方面提供一种带宽分配装置, 应用于网络控制节点, 其中, 所述装置包括:
第一发送单元,其在所述网络控制节点没有足够的可用带宽分配给无竞争数据传 输调度时期 (SP)请求设备时, 向所述 SP请求设备发送主信道扫描指示消息, 指示 所述 SP请求设备在候选主信道上进行信道扫描;
分配单元, 其根据所述 SP请求设备发送的扫描报告为所述 SP请求设备分配用 于进行数据传输的 SP;
第二发送单元, 其向所述 SP请求设备发送 SP调度信息, 指示传输所述数据所 用的逻辑信道的绑定信息, 以便所述 SP请求设备在绑定的信道上进行通信。
本发明实施例的第 2方面提供一种带宽分配装置, 应用于 SP请求设备, 其中, 所述装置包括:
发送单元, 其向网络控制节点发送 SP请求消息, 所述 SP请求消息包含请求带 宽、 源节点、 目的节点以及请求传输的时间长度;
扫描单元,其根据接收到的所述网络控制节点发送的主信道扫描指示消息, 在所 述主信道扫描指示消息所指示的候选主信道上进行信道扫描;
上报单元, 其将信道扫描的扫描报告发送给所述网络控制节点;
通信单元, 其根据接收到的所述网络控制节点发送的 SP调度信息, 在所述 SP 调度信息所指示的绑定的信道上进行通信。
本发明实施例的第 3方面提供一种通信系统, 其中, 所述通信系统包括网络控制 节点和 SP请求设备, 其中,
所述网络控制节点被配置为: 在没有足够的可用带宽分配给 SP请求设备时, 向 所述 SP请求设备发送主信道扫描指示消息, 指示所述 SP请求设备在候选主信道上 进行信道扫描; 根据所述 SP请求设备发送的扫描报告为所述 SP请求设备分配用于 进行数据传输的 SP; 向所述 SP请求设备发送 SP调度信息, 指示传输所述数据所用 的逻辑信道的绑定信息, 以便所述 SP请求设备在绑定的信道上进行通信。
所述 SP请求设备被配置为: 向网络控制节点发送 SP请求消息, 所述 SP请求消 息包含请求带宽、 源节点、 目的节点以及请求传输的时间长度; 根据接收到的所述网 络控制节点发送的主信道扫描指示消息,在所述主信道扫描指示消息所指示的候选主 信道上进行信道扫描; 将信道扫描的扫描报告发送给所述网络控制节点; 根据接收到 的所述网络控制节点发送的 SP调度信息, 在所述 SP调度信息所指示的绑定的信道 上进行通信。
本发明实施例的有益效果在于: 本发明实施例将多个物理信道绑定, 形成更大带 宽的逻辑信道用于调度数据传输, 由此提高了数据传输速率。 参照后文的说明和附图,详细公开了本发明的特定实施方式,指明了本发明的原 理可以被采用的方式。应该理解, 本发明的实施方式在范围上并不因而受到限制。在 所附权利要求的精神和条款的范围内,本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和 /或示出的特征可以以相同或类似的方式在一个或更多 个其它实施方式中使用, 与其它实施方式中的特征相组合, 或替代其它实施方式中的 特征。
应该强调, 术语"包括 /包含"在本文使用时指特征、 整件、 步骤或组件的存在, 但并不排除一个或更多个其它特征、 整件、 步骤或组件的存在或附加。 附图说明
所包括的附图用来提供对本发明实施例的进一步的理解,其构成了说明书的一部 分, 用于例示本发明的实施方式, 并与文字描述一起来阐释本发明的原理。 显而易见 地, 下面描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。 在附图中: 图 1是目前 45GHz频段的信道划分示意图;
图 2是本发明实施例 1中带宽分配方法流程图;
图 3是本发明实施例 1中分配带宽为 1.08GHz的信道绑定示意图;
图 4是本发明实施例 1中分配带宽为 2.16GHz的信道绑定示意图;
图 5是本发明实施例 2中带宽分配装置构成示意图;
图 6是本发明实施例 3中的网络控制节点构成示意图;
图 7是本发明实施例 4中带宽分配方法流程图;
图 8是本发明实施例 4中步骤 704实施方式流程图;
图 9是本发明实施例 4中固定主信道下信道绑定 SP的信标帧发送示意图; 图 10是本发明实施例 4中非固定主信道下信道绑定 SP的信标帧发送示意图; 图 11是本发明实施例 5中带宽分配装置构成示意图;
图 12是本发明实施例 6中的 SP请求设备构成示意图。 具体实施方式
参照附图, 通过下面的说明书, 本发明的前述以及其它特征将变得明显。在说明 书和附图中, 具体公开了本发明的特定实施方式,其表明了其中可以采用本发明的原 则的部分实施方式, 在本实施例中, 仅以基本服务集 (Basic Service Set, BSS) 网络 成员设备请求无竞争数据传输调度时期 (Data SP) 为例对发明实施例进行说明, 应 了解的是, 本发明不限于所描述的实施方式, 相反, 本发明包括落入所附权利要求的 范围内的全部修改、变型以及等同物。下面结合附图对本发明的各种实施方式进行说 明。 这些实施方式只是示例性的, 不是对本发明的限制。
在原 45GHz 频段主副信道控制接入方法中, 可支持的数据传输带宽为一个 540MHz 两个 540MHz及 1.08GHz。 为了支持更大数据传输带宽要求, 本发明实施 例提供了一种带宽分配方法,通过该方法, 能够将多个连续或不连续的物理信道绑定 在一起, 形成一个逻辑信道, 从而实现了更大的信道带宽, 以支持更大的传输速率。 在本发明实施例中, 针对 45GHz频段的主副信道框架, 提供了信道绑定所需的 MAC 机制, 最终可以实现最大 2.16GHz的信道带宽, 以在 45GHz频段达到更高的峰值速 牛- 以下结合附图对本发明实施例进行详细说明。 实施例 1
本发明实施例 1提供了一种带宽分配方法, 图 2是该方法的流程图, 该方法应用 于网络中的控制节点, 例如 PCP (Personal basic service set Control Point, 个人基本服 务集控制点) 或者 AP (Access Point, 接入点)。 为了方便说明, 以下简称为网络控 制节点。 请参照图 2, 该方法包括:
步骤 201, 网络控制节点在没有足够的可用带宽分配给无竞争数据传输调度时期 ( SP) 请求设备时, 向所述 SP请求设备发送主信道扫描指示消息, 指示所述 SP请 求设备在候选主信道上进行信道扫描;
步骤 202,所述网络控制节点根据所述 SP请求设备发送的扫描报告为所述 SP请 求设备分配用于进行数据传输的 SP;
步骤 203, 所述网络控制节点向所述 SP请求设备发送 SP调度信息, 指示传输所 述数据所用的逻辑信道的绑定信息,以便所述 SP请求设备在绑定的信道上进行通信。
在本实施例中, SP请求设备根据自己的数据传输情况向网络控制节点发送 SP请 求, 以请求 SP, 如果其请求的 SP所要求的带宽超出了网络控制节点能够分配的当前 可用的信道资源, 则网络控制节点可以向该 SP请求设备发送主信道扫描指示消息, 指示该 SP请求设备扫描该主信道指示消息所指示的候选主信道。
在步骤 201中,网络控制节点没有足够的可用带宽分配给无竞争数据传输调度时 期(SP)请求设备包含以下情况: 例如当 BSS设备请求的 SP要求的带宽大于当前频 段的最大信道带宽, 或请求的 SP要求的带宽小于当前频段的最大信道带宽, 但网络 中当前剩余未分配信道带宽小于请求的带宽。 此时, 网络控制节点向所述 SP请求设 备发送主信道扫描指示信息, 指示所述 SP请求设备切换到候选主信道并扫描监听该 候选扫描信道, 以便获取候选主信道上数据调度传输情况。其中, 由于主信道可能是 固定的, 也可能是灵活选择的, 因此, 在该主信道扫描指示消息中, 该网络控制节点 可以指示除当前工作的主信道以外的所有可能的信道 (对应灵活选择的主信道的情 况), 也可以指示除当前工作的主信道以外的其它所有主信道 (对应固定的主信道的 情况)。
例如, 在 45GHz频段主副信道 MAC框架上, 网络控制信息必须在主信道传输, 可支持的数据传输带宽为一个 540MHz、 两个 540MHz及 1.08GHz, 当 SP请求设备 要求带宽小于 1.08GHz, 但当前剩余未分配信道带宽小于请求带宽, 或者当 SP请求 设备要求的带宽大于 1.08GHz 的情况下, 即网络控制节点没有足够的可用带宽分配 给 SP请求设备, 则在固定主信道选择的情况下, 在每个 1.08GHz信道中, 只扫描定 义为主信道的高或低 540MHz信道, 以便获得整个 1.08GHz信道上的数据调度传输 情况, 而在灵活选择主信道的情况下, 针对每个 1.08GHz信道中, 需要扫描两个与 该 1.08GHz信道重叠的 540 MHz信道, 以便能够获得整个 1.08GHz信道上的数据调 度传输信息。
在本实施例的一个实施方式中,所述主信道扫描指示消息可以包括: 扫描节点地 址; 扫描信道号; 以及扫描时间。 其中, 扫描节点地址表示该 SP请求设备的地址, 其指示了需要进行主信道扫描的设备; 扫描信道号表示候选主信道的信道 ID, 该扫 描信道号可以包含一个或一个以上; 扫描时间表示指示 SP请求设备扫描并监听其他 某个候选主信道的时间,该信道扫描时间可以设置为大于任意网络信标间隔小于的时 间 aMaxBIDuaration, 本实施例并不以此作为限制。
在本实施例中, SP 请求设备根据网络控制节点发送的主信道扫描指示消息进行 了主信道的扫描之后, 会向网络控制节点上报扫描结果, 也即主信道扫描报告, 具体 将在以下实施例中进行说明。
在步骤 202中, 网络控制节点根据收到的主信道扫描报告, 根据报告中指示的其 它信道 SP和 /或 CBAP调度信息, 结合本地保存的当前主信道 SP/CBAP调度信息, 在有足够的带宽能够分配时, 向 SP请求设备分配用于进行数据传输的 SP。
下面仍以 45GHz频段主副信道 MAC框架为例, 对网络控制节点为 SP请求设备 分配用于进行数据传输的 SP进行说明。
( 1 ) 分配的总带宽为 1.08GHz, 在本实施方式中, 可以采用绑定两个连续的 540MHz信道, 并以 1.08GHz为带宽的单一流传输, 或以 540MHz为带宽的两个流并 行传输;或者也可以采用绑定两个不连续的 540MHz信道,并以 540MHz为带宽的两 个数据流并行传输。 其中, 连续的 540MHz信道是指这两个信道与同一个 1.08GHz 信道重叠, 如图 3所示的信道 6和信道 7, 这两个信道与信道 2重叠; 相反, 不连续 的 540MHz信道是指这两个信道与不同的 1.08GHz信道重叠, 如图 3所示的信道 7 和信道 9, 这两个信道分别与信道 2和信道 3重叠。
图 3是本发明实施例中分配带宽为 1.08GHz的信道绑定示意图, 如图 3所示, 主信道固定为低 540MHz的信道。 SP1绑定了两个连续的 540MHz信道, 也即信道 6 和信道 7, SP1指定的源、 目的节点之间的数据流 1在 1.08GHz信道 2上传输, 或也 可以以源、目的节点之间的数据流 1在信道 6和信道 7上以 540MHz为带宽并行传输 (图中未示出); SP2绑定了两个不连续的 540MHz信道, 也即信道 7和信道 9, SP2 指定的源、 目的节点之间的两条数据流(数据流 2和 3) 分别在信道 7和信道 9上以 540MHz为带宽并行传输。 由此, 通过信道绑定实现了带宽分配。
(2)分配的总带宽为 2.16GHz, 在本实施方式中, 可以绑定两个 1.08GHz信道, 并行传输以 1.08GHz为带宽的两个数据流; 或也可以绑定一个 1.08GHz信道及两个 连续的 540MHz信道, 此时, 可以并行传输两个以 1.08GHz为带宽的数据流, 也可 以并行传输一个以 1.08GHz为带宽的数据流和两个以 540MHz为带宽的数据流; 或 也可以绑定一个 1.08GHz 信道及两个不连续的 540MHz 信道, 并行传输一个以 1.08GHz为带宽数据流及两个以 540MHz为带宽的数据流;或也可以绑定四个连续或 不连续的 540MHz 信道, 此时, 传输方式可以是以 1.08GHz 为带宽的数据流或以 540MHz为带宽的数据流的并行传输的任意组合,但以 1.08GHz为带宽的数据流只有 在两个连续 540MHz信道上传输。 其中, "连续"与 "不连续" 的含义与前述相同, 此处省略说明。
图 4是本发明实施例中分配的总带宽为 2.16GHz的信道绑定示意图, 如图 4所 示, 主信道固定为低 540MHz的信道。 SP1绑定了两个 1.08GHz信道, 也即信道 1 和信道 2, SP1指定的源、 目的节点之间的两条数据流 (数据流 1和数据流 2) 分别 在这两个 1.08GHz信道上并行传输。 SP2绑定了四个 540MHz信道, 也即信道 5、 6、 7和 9, SP2指定的源、 目的节点之间存在三条数据流 (数据流 3-5 ) 分别在 540MHz 信道 5、 两个连续 540MHz信道 6和 7重叠的 1.08GHz信道、 540MHz信道 9上并行 传输。
在本实施例中, 网络控制节点为 SP请求设备分配了 SP所要求的带宽后, 即向
SP请求设备发送 SP调度信息, 通过该 SP调度信息指示传输所述数据所用的逻辑信 道的绑定信息, 以便该 SP请求设备在绑定的信道上进行通信。
在步骤 203中, 如前所述, 网络控制节点可以将多个连续或不连续的物理信道绑 定在一起, 形成传输所述数据所用的逻辑信道, 并将该逻辑信道的绑定信息包含在该 SP调度信息中, 以指示 SP请求设备在绑定的信道上进行通信, 其中 SP调度信息可 以包含在信标帧中传输,也可以包含在其他发送给 SP请求设备的单播控制帧中传输, 本实施例并不以此作为限制。
在本实施例的一个实施方式中, 该 SP调度信息可以包括: 分配的带宽; 绑定信 道号; 以及 SP分配信息。 其中, 分配的带宽为网络控制节点为 SP请求设备分配的 带宽大小; 绑定信道号为形成该逻辑信道的物理信道 ID 号; SP 分配信息为与此次 SP分配相关的信息, 例如: SP传输的源节点地址、 SP传输的目的节点地址、 SP起 始时间、 SP 持续时间、 是否存在信道绑定、 传输方式 (单一流传输或多条流并行传 输)等等。 以上仅为示例性的说明 SP调度信息包含的内容, 本实施例并不仅限于此。
在本实施例中, 当 SP指定的源节点和目的节点收到该 SP调度信息后, 即可在 绑定的逻辑信道上进行通信, 具体将在以下实施例中进行详细说明。
在本实施例中, SP请求设备可以是 SP指定的源节点, 也可以是 SP指定的目的 节点, 本实施例并不以此作为限制。 优选的, 在步骤 201和步骤 202中, 进行主信道 扫描和扫描报告上报的 SP请求设备是指 SP指定的源节点, 在步骤 203中, 接收 SP 调度信息的 SP请求设备是该 SP指定的源节点和目的节点。 通过本实施例的上述带宽分配方法, 将多个物理信道绑定, 形成更大带宽的逻辑 信道用于调度数据传输, 由此提高了数据传输速率。 实施例 2
本发明实施例还提供了一种带宽分配装置, 该装置应用于网络控制节点, 由于该 带宽分配装置解决问题的原理与实施例 1的方法类似, 因此, 其具体的实施可以参照 实施例 1的方法的实施, 内容相同之处不再重复说明。
图 5是该带宽分配装置的构成示意图, 请参照图 5, 该带宽分配装置包括: 第一发送单元 501, 其在所述网络控制节点没有足够的可用带宽分配给 SP请求 设备时, 向所述 SP请求设备发送主信道扫描指示消息, 指示所述 SP请求设备在候 选主信道上进行信道扫描;
分配单元 502,其根据所述 SP请求设备发送的扫描报告为所述 SP请求设备分配 用于进行数据传输的 SP;
第二发送单元 503, 其向所述 SP请求设备发送 SP调度信息, 指示传输所述数据 所用的逻辑信道的绑定信息, 以便所述 SP请求设备在绑定的信道上进行通信。
在一个实施方式中,所述主信道扫描指示消息包括:扫描节点地址;扫描信道号; 以及扫描时间。
在一个实施方式中, 所述 SP调度信息包括: 分配的带宽; 绑定信道号; 以及 SP 分配信息。
其中, 所述 SP分配信息包括: SP传输的源节点地址; SP传输的目的节点地址;
SP起始时间; SP持续时间。
其中, 所述 SP分配信息还可以包括: 是否存在信道绑定的指示信息; 以及传输 方式指示信息。
通过本实施例的上述带宽分配装置, 将多个物理信道绑定, 形成更大带宽的逻辑 信道用于调度数据传输, 由此提高了数据传输速率。 实施例 3
本发明实施例 3提供一种网络控制节点,该网络控制节点包括如实施例 2所述的 带宽分配装置。 图 6是本发明实施例的网络控制节点一构成示意图。如图 6所示, 网络控制节点 600可以包括: 中央处理器 (CPU) 620和存储器 610; 存储器 610耦合到中央处理 器 620。 其中该存储器 610可存储各种数据; 此外还存储信息处理的程序, 并且在中 央处理器 620的控制下执行该程序, 并存储如主信道扫描指示信息、 SP调度信息、 SP分配信息等。
在一个实施方式中,带宽分配装置的功能可以被集成到中央处理器 620中。其中, 中央处理器 620可以被配置为:在没有足够的可用带宽分配给无竞争数据传输调度时 期 (SP) 请求设备时, 向所述 SP请求设备发送主信道扫描指示消息, 指示所述 SP 请求设备在候选主信道上进行信道扫描; 根据所述 SP请求设备发送的扫描报告为所 述 SP请求设备分配用于进行数据传输的 SP; 向所述 SP请求设备发送 SP调度信息, 指示传输所述数据所用的逻辑信道的绑定信息, 以便所述 SP请求设备在绑定的信道 上进行通信。
其中, 所述主信道扫描指示消息包括: 扫描节点地址; 扫描信道号; 以及扫描时 间。
其中, 所述 SP调度信息包括: 分配的带宽; 绑定信道号; 以及 SP分配信息。 其中, 所述 SP分配信息包括: SP传输的源节点地址; SP传输的目的节点地址; SP起始时间; SP持续时间。
其中, 所述 SP分配信息还包括: 是否存在信道绑定的指示信息; 以及传输方式 指示信息。
在另一个实施方式中, 带宽分配装置可以与中央处理器 620分开配置,例如可以 将带宽分配装置配置为与中央处理器 620连接的芯片,通过中央处理器 620的控制来 实现带宽分配装置的功能。
此外, 如图 6所示, 网络控制节点 600还可以包括: 传感器 601、 收发器 604和 电源模块 605等; 其中, 上述部件的功能与现有技术类似, 此处不再赘述。 值得注意 的是, 网络控制节点 600也并不是必须要包括图 6中所示的所有部件; 此外, 网络控 制节点 600还可以包括图 6中没有示出的部件, 可以参考现有技术。
通过本发明的上述实施例中的网络控制节点, 将多个物理信道绑定, 形成更大带 宽的逻辑信道用于调度数据传输, 由此提高了数据传输速率。 实施例 4
本发明实施例 4提供了一种带宽分配方法, 该方法是与实施例 1 的方法对应的 SP请求设备侧的处理, 其中与实施例 1相同的内容不再重复说明。 图 7是该方法的 流程图, 请参照图 7, 该方法包括:
步骤 701, SP请求设备向网络控制节点发送 SP请求消息, 所述 SP请求消息包 含请求带宽、 源节点、 目的节点以及请求传输的时间长度;
步骤 702, 所述 SP请求设备根据接收到的所述网络控制节点发送的主信道扫描 指示消息, 在所述主信道扫描指示消息所指示的候选主信道上进行信道扫描;
步骤 703, 所述 SP请求设备将信道扫描的扫描报告发送给所述网络控制节点; 步骤 704,所述 SP请求设备根据接收到的所述网络控制节点发送的 SP调度信息, 在所述 SP调度信息所指示的绑定的信道上进行通信。
在步骤 701中, 为了进行数据传输, SP请求设备向网络控制节点发送 SP请求消 息, 这里的 SP请求消息包含有进行数据传输所需要的带宽、 进行数据传输的源节点 以及目的节点, 数据传输的时间长度等信息。
在步骤 702中, 当网络控制节点发现没有足够的信道资源分配给该 SP请求设备 时, 会向该 SP请求设备发送主信道扫描指示消息, 如实施例 1所述, 在此省略说明。 该 SP请求设备根据接收到的主信道扫描指示信息, 切换到该消息指示的候选主信道 上, 打开接收机, 持续监听对应的主信道扫描指示消息中的扫描时间, 接收信标帧。
在步骤 703中,该 SP请求设备根据扫描结果生成扫描报告上报给网络控制节点, 在一个实施方式中, 该扫描报告包括: 主信道号; 信标帧列表长度; 以及信标帧信息 列表。 其中, 主信道号对应 SP请求设备所扫描的候选主信道的 ID号; 信标帧列表 长度指示了该 SP请求设备在指定候选主信道上接收到的来自不同网络(不同 BSS所 建立起来的网络)的信标帧的数目; 该信标帧信息列表包含至少一条记录, 每一条记 录对应所述 SP请求设备在扫描所述候选主信道时接收到的每个信标帧, 可以包括: 网络 ID; 网络控制节点地址; 信标间隔; 以及无竞争数据传输调度时期 (SP) 和 /或 竞争接入时期 (CBAP) 调度信息。 其中, 网络 ID指示了该信标帧所在的网络; 网 络控制节点地址指示了该信标帧所在的网络的网络控制节点的地址;信标间隔指示了 该信标帧所在的网络的信标间隔; SP/CBAP 指示了该信标帧所在网络的数据调度情 况。 其中, SP请求设备可以根据自身数据调度的需求选择发送部分或全部扫描监听 到的其它信道数据调度传输信息, 本实施例并不以此作为限制。
在另一种实施方式中,该扫描报告可以包括:可用带宽及该可用带宽所在的信道。 在本实施方式中, SP 请求设备不再上报上述扫描结果, 而是根据扫描结果对信道占 用情况进行分析和汇总, 只上报各个信道上可用的带宽, 由此, 网络控制节点可以根 据该可用带宽及该可用带宽所在的信道为 SP请求设备 ( SP指定的源节点和目的节点) 分配用于数据传输的 SP。
在步骤 704中, 根据接收到的 SP调度信息, SP指定的源节点和目的节点即可在 该 SP调度信息所指示的绑定的信道上进行数据发送和 /或接收。 其中, 该 SP调度信 息包含的内容与实施例 1相同, 此处不再赘述。
在本实施例中, 如果绑定的信道包括非工作信道, 则在 SP指定的开始时间, 源 节点可以切换到该非工作信道的绑定信道所属的主信道上, 在该主信道上发送信标 帧, 完成信标帧的发送, SP 指定的源节点和目的节点再在绑定的信道上发送数据, 完成数据发送后再切换回工作信道。其中, 这里的信标帧可以包括: 该源节点所属网 络的网络控制节点所发送的信标帧中所包含的网络控制信息;以及当前分配的绑定的 信道的 SP调度信息。 其中, 切换信道的过程可以参考现有技术, 这里不再赘述。
在本实施例中, 根据不同的主信道定义方式, 信标帧的发送也有不同的方式, 下 面结合附图对此进行说明。
图 8是本发明实施例步骤 704的一个实施方式流程图, 如图 8所示,在一个实施 方式中, SP请求设备在绑定的信道上进行通信, 包括:
步骤 801, 如果绑定的信道包括非工作信道, 则所述 SP请求设备切换到绑定的 该非工作信道所属的主信道;
在步骤 801中, SP请求设备可以在 SP调度信息中的 SP起始时间切换到绑定信 道号所述的主信道。
步骤 802, 所述 SP请求设备在所述绑定的该非工作信道所属的主信道上发送信 标帧;
在步骤 802中, 该信标帧可以包括: 该 SP请求设备所属的网络的网络控制节点 发送的信标帧中所包含的网络控制信息和当前分配的绑定的该非工作信道的 SP调度 信息。 在该步骤中, 该网络控制信息可以包括网络 ID、 网络控制节点地址、 信标间隔 等信息。
在一个实施方式中, 如果所述绑定的非工作信道所属的主信道为固定主信道, 则 所述 SP请求设备在所述绑定的非工作信道所属的主信道上发送所述信标帧;
在另一个实施方式中,如果所述绑定的非工作信道所属的主信道为灵活选择的主 信道, 则如果绑定的信道为第一工作带宽的信道, 例如 540MHz的信道, 所述 SP请 求设备在所述第一工作带宽的信道上发送所述信标帧;
在另一个实施方式中,如果所述绑定的非工作信道所属的主信道为灵活选择的主 信道, 则如果绑定的信道为第二工作带宽的信道, 例如 1.08GHz的信道, 所述 SP请 求设备在与所述第二工作带宽的信道重叠的、信道带宽比所述第二工作带宽的信道小 的两个第一工作带宽的信道 (例如 540MHz的信道) 上发送所述信标帧。
步骤 803, 所述 SP请求设备在发送完所述信标帧之后在绑定的该非工作信道及 绑定的工作信道上发送数据;
在该步骤中, 该 SP请求设备可以在发送完所述信标帧之后在绑定的该非工作信 道及绑定的工作信道上同时发送数据, 或也可以在 SP调度信息中的 SP起始时间开 始时在绑定的工作信道上发送数据,在发送完所述信标帧之后再在绑定的非工作信道 上发送数据, 本实施例并不以此作为限制。
步骤 804, 所述 SP请求设备在发送完所述数据之后切换回工作信道。
下面以该第一类工作信道为 540MHz带宽的信道、该第二类工作信道为 1.08GHz 带宽的信道为例对以上实施方式进行说明。
图 9为固定主信道下信道绑定 SP的信标帧发送示意图, 如图 9所示, 在主信道 固定为与每个 1.08GHz信道重叠的低 540MHz的信道时, 假设 SP1请求设备的工作 信道是 1.08GHz信道 1, 在 SP1期间, SP1指定的源节点 (SP请求设备) 首先在绑 定的非工作信道 2所属的主信道 6上, 在 ΒΉ1期间发送信标帧, 该信标帧包含 SP1 的调度信息, 在完成该信标帧的发送后, 在绑定的工作信道 1和绑定的非工作信道 2 上开始数据 1和 2的传输直至 SP1结束, 其中数据 1和 2可以同时在信标帧 ΒΉ1发 送结束后开始传输,或者数据 1的传输可以从 SP1的起始时间开始,数据 2的传输可 以从信标帧 ΒΉ1发送结束后开始。假设 SP2请求设备的工作信道是 1.08GHz的信道 3,在 SP2期间,在两个绑定的非工作信道即 540MHz信道 6和 7对应的主信道 6上, SP2指定的源节点首先在 BTB期间发送信标帧, 该信标帧包含 SP2的调度信息, 在 完成该信标帧的发送后, 在绑定的工作信道 8、 9和绑定的非工作信道 6和 7上进行 数据 1、 2和 3、 4的传输直至 SP2结束, 其中数据 1、 2和 3、 4可以同时在信标帧 BTI2发送结束后开始传输, 或者数据 1、 2的传输可以从 SP2的起始时间开始, 数据 3、 4的传输可以从信标帧 BTI2发送结束后开始。
图 10是非固定主信道下信道绑定 SP的信标帧发送示意图, 如图 10所示, 主信 道可能是 1.08GHz信道内的高或低 540MHz,并且可能不同的网络选择了不同的主信 道用作传输信标帧等控制信息。 在这种情况下, 如果绑定的非工作信道为 1.08GHz 信道 (例如信道 2), 在 SP1期间, SP1指定的源节点在 SP1开始阶段在重叠的两个 540MHz信道 (例如信道 6和 7) 上发送信标帧, 该信标帧包含了 SP1的调度信息, 完成信标帧的发送后, 在绑定的工作信道 1和绑定的非工作信道 2上开始数据 1和 2 的传输直至 SP1结束,其中数据 1和 2可以同时在信标帧 ΒΉ1发送结束后开始传输, 或者数据 1的传输可以从 SP1的起始时间开始, 数据 2的传输可以从信标帧 ΒΉ1发 送结束后开始。 如果绑定的非工作信道为 540MHz信道(例如信道 5、 6、 7), 在 SP2 期间, SP2指定的源节点在 SP2开始阶段要在绑定的非工作信道即 540MHz信道(例 如信道 5、 6、 7)上发送信标帧, 该信标帧包含 SP2的调度信息, 完成信标帧的发送 后, 在绑定的工作信道 9和绑定的非工作信道 5、 6、 7上开始数据 1、 2和 3的传输 直至 SP2结束, 其中数据 1、 2和 3可以同时在信标帧 BTI2发送结束后开始传输, 或者数据 3的传输可以从 SP2的起始时间开始,数据 1和 2的传输可以从信标帧 BTI2 发送结束后开始。
在本实施例中, 发送 SP请求的设备可以是 SP的源节点, 而接收 SP调度信息的 设备可以是 SP的源节点, 也可以是 SP的目的节点, 还可以是 SP的源节点和目的节 点, 如前所述, 此处不再赘述。
通过本实施例的上述带宽分配方法, 将多个物理信道绑定, 形成更大带宽的逻辑 信道用于调度数据传输, 由此提高了数据传输速率。 实施例 5
本发明实施例还提供了一种带宽分配装置, 该装置应用于 SP请求设备, 由于该 带宽分配装置解决问题的原理与实施例 4的方法类似, 因此, 其具体的实施可以参照 实施例 4的方法的实施, 内容相同之处不再重复说明。
图 11是该带宽分配装置的构成示意图, 请参照, 该带宽分配装置包括: 发送单元 1101, 其向向网络控制节点发送 SP请求消息, 所述 SP请求消息包含 请求带宽、 源节点、 目的节点以及请求传输的时间长度;
扫描单元 1102, 其根据接收到的所述网络控制节点发送的主信道扫描指示消息, 在所述主信道扫描指示消息所指示的候选主信道上进行信道扫描;
上报单元 1103, 其将信道扫描的扫描报告发送给所述网络控制节点;
通信单元 1104, 其根据接收到的所述网络控制节点发送的 SP调度信息, 在所述 SP调度信息所指示的绑定的信道上进行通信
在一个实施方式中, 所述扫描报告包括: 主信道号; 信标帧列表长度; 以及信标 帧信息列表。
在本实施例中, 所述信标帧信息列表包含至少一条记录, 每一条记录对应所述
SP 请求设备在扫描所述候选主信道时接收到的每个信标帧, 每一条记录包括: 网络 ID; 网络控制节点地址; 信标间隔; 以及无竞争数据传输调度时期 (SP) 或竞争接 入时期 (CBAP) 调度信息。
在另一个实施方式中, 所述扫描报告包括: 可用带宽及该可用带宽所在的信道。 在一个实施方式中, 通信单元 1104还可以包括:
第一切换模块 11041, 其在绑定的信道包括非工作信道时, 切换到绑定的该非工 作信道所属的主信道;
第一发送模块 11042, 其在所述绑定的该非工作信道所属的主信道上发送网络控 制节点的信标帧;
第二发送模块 11043, 其在发送完所述信标帧之后在绑定的该非工作信道及绑定 的工作信道上发送数据;
第二切换模块 11044, 其在发送完所述数据之后切换回工作信道。
在该实施方式中, 如果所述绑定的非工作信道所属的主信道为固定主信道, 则所 述 SP请求设备在所述绑定的非工作信道所属的主信道上发送所述信标帧; 如果所述 绑定的非工作信道所属的主信道为灵活选择的主信道,则如果绑定的信道为第一工作 带宽的信道, 所述 SP请求设备在所述第一工作带宽的信道上发送所述信标帧; 如果 所述绑定的非工作信道所属的主信道为灵活选择的主信道,则如果绑定的信道为第二 工作带宽的信道, 所述 SP请求设备在与所述第二工作带宽的信道重叠的、 信道带宽 比所述第二工作带宽的信道小的两个第一工作带宽的信道上发送所述信标帧。
通过本实施例的上述带宽分配装置,将多个物理信道绑定, 形成更大带宽的逻辑 信道用于调度数据传输, 由此提高了数据传输速率。 实施例 6
本发明实施例 6提供一种 SP请求设备, 该 SP请求设备包括如实施例 5所述的 带宽分配装置。
图 12是本发明实施例的 SP请求设备一构成示意图。如图 12所示, SP请求设备 1200可以包括: 中央处理器 (CPU) 1220和存储器 1210; 存储器 1210耦合到中央 处理器 1220。 其中该存储器 1210可存储各种数据; 此外还存储信息处理的程序, 并 且在中央处理器 1220的控制下执行该程序,并存储如主信道扫描报告、 SP调度信息、 SP分配信息等。
在一个实施方式中, 带宽分配装置的功能可以被集成到中央处理器 1220中。 其 中, 中央处理器 1220可以被配置为: 向网络控制节点发送 SP请求消息, 所述 SP请 求消息包含请求带宽、 源节点、 目的节点以及请求传输的时间长度; 根据接收到的所 述网络控制节点发送的主信道扫描指示消息,在所述主信道扫描指示消息所指示的候 选主信道上进行信道扫描; 将信道扫描的扫描报告发送给所述网络控制节点; 根据接 收到的所述网络控制节点发送的 SP调度信息, 在所述 SP调度信息所指示的绑定的 信道上进行通信。
在一个实施方式中, 中央处理器 1220可以被配置为: 所述扫描报告包括: 主信 道号; 信标帧列表长度; 以及信标帧信息列表。
其中, 所述信标帧信息列表包含至少一条记录, 每一条记录对应所述 SP请求设 备在扫描所述候选主信道时接收到的每个信标帧, 每一条记录包括: 网络 ID; 网络 控制节点地址; 信标间隔; 以及无竞争数据传输调度时期 (SP ) 或竞争接入时期 (CBAP) 调度信息。
在另一个实施方式中, 中央处理器 1220可以被配置为: 所述扫描报告包括: 可 用带宽及该可用带宽所在的信道。
其中, 中央处理器 1220可以被进一步配置为: 如果绑定的信道包括非工作信道, 则切换到绑定的该非工作信道所属的主信道;在所述绑定的该非工作信道所属的主信 道上发送网络控制节点的信标帧;在发送完所述信标帧之后在绑定的该非工作信道及 绑定的工作信道上发送数据; 在发送完所述数据之后切换回工作信道。
其中, 如果所述绑定的非工作信道所属的主信道为固定主信道,则所述 SP请求 设备在所述绑定的非工作信道所属的主信道上发送所述信标帧;如果所述绑定的非工 作信道所属的主信道为灵活选择的主信道, 则如果绑定的信道为第一工作带宽的信 道, 所述 SP请求设备在所述第一工作带宽的信道上发送所述信标帧; 如果所述绑定 的非工作信道所属的主信道为灵活选择的主信道,则如果绑定的信道为第二工作带宽 的信道, 所述 SP请求设备在与所述第二工作带宽的信道重叠的、 信道带宽比所述第 二工作带宽的信道小的两个第一工作带宽的信道上发送所述信标帧。
在另一个实施方式中, 带宽分配装置可以与中央处理器 1220分开配置, 例如可 以将带宽分配装置配置为与中央处理器 1220连接的芯片,通过中央处理器 1220的控 制来实现带宽分配装置的功能。
此外, 如图 12所示, SP请求设备 1200还可以包括: 传感器 1201、 收发器 1204 和电源模块 1205等; 其中, 上述部件的功能与现有技术类似, 此处不再赘述。 值得 注意的是, SP请求设备 1200也并不是必须要包括图 12中所示的所有部件; 此外, SP请求设备 1200还可以包括图 12中没有示出的部件, 可以参考现有技术。
通过本发明的上述实施例中的 SP请求设备, 将多个物理信道绑定, 形成更大带 宽的逻辑信道用于调度数据传输, 由此提高了数据传输速率。
实施例 7
本发明实施例还提供一种通信系统, 该通信系统包括网络控制节点和 SP请求设 备, 其中,
所述网络控制节点被配置为: 在没有足够的可用带宽分配给 SP请求设备时, 向 所述 SP请求设备发送主信道扫描指示消息, 指示所述 SP请求设备在候选主信道上 进行信道扫描; 根据所述 SP请求设备发送的扫描报告为所述 SP请求设备分配用于 进行数据传输的 SP; 向所述 SP请求设备发送 SP调度信息, 指示传输所述数据所用 的逻辑信道的绑定信息, 以便所述 SP请求设备在绑定的信道上进行通信。 所述 SP请求设备被配置为: 向网络控制节点发送 SP请求消息, 所述 SP请求消 息包含请求带宽、 源节点、 目的节点以及请求传输的时间长度; 根据接收到的所述网 络控制节点发送的主信道扫描指示消息,在所述主信道扫描指示消息所指示的候选主 信道上进行信道扫描; 将信道扫描的扫描报告发送给所述网络控制节点; 根据接收到 的所述网络控制节点发送的 SP调度信息, 在所述 SP调度信息所指示的绑定的信道 上进行通信。
在本实施例中, 网络控制节点可以是实施例 3中所述的网络控制节点; SP请求 设备可以是实施例 6所述的 SP请求设备。 其内容被合并于此, 在此不再赘述。
通过本发明的上述实施例中的通信系统, 将多个物理信道绑定, 形成更大带宽的 逻辑信道用于调度数据传输, 由此提高了数据传输速率。
本发明实施例还提供一种计算机可读程序,其中当在带宽分配装置或网络控制节 点中执行所述程序时,所述程序使得计算机在所述带宽分配装置或网络控制节点中执 行实施例 1所述的带宽分配方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质,其中所述计算机可 读程序使得计算机在带宽分配装置或网络控制节点中执行实施例 1 所述的带宽分配 方法。
本发明实施例还提供一种计算机可读程序, 其中当在带宽分配装置或 SP请求设 备中执行所述程序时, 所述程序使得计算机在所述带宽分配装置或 SP请求设备中执 行实施例 4所述的带宽分配方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质,其中所述计算机可 读程序使得计算机在带宽分配装置或 SP请求设备中执行实施例 4所述的带宽分配方 法。 本发明以上的装置和方法可以由硬件实现, 也可以由硬件结合软件实现。本发明 涉及这样的计算机可读程序, 当该程序被逻辑部件所执行时, 能够使该逻辑部件实现 上文所述的装置或构成部件, 或使该逻辑部件实现上文所述的各种方法或步骤。逻辑 部件例如现场可编程逻辑部件、微处理器、计算机中使用的处理器等。本发明还涉及 用于存储以上程序的存储介质, 如硬盘、 磁盘、 光盘、 DVD、 flash存储器等。 以上结合具体的实施方式对本发明进行了描述,但本领域技术人员应该清楚, 这 些描述都是示例性的, 并不是对本发明保护范围的限制。本领域技术人员可以根据本 发明的精神和原理对本发明做出各种变型和修改,这些变型和修改也在本发明的范围 内。

Claims

权 利 要 求 书
1、 一种带宽分配装置, 应用于网络控制节点, 其中, 所述装置包括: 第一发送单元,其在所述网络控制节点没有足够的可用带宽分配给无竞争数据传 输调度时期 (SP )请求设备时, 向所述 SP请求设备发送主信道扫描指示消息, 指示 所述 SP请求设备在候选主信道上进行信道扫描;
分配单元, 其根据所述 SP请求设备发送的扫描报告为所述 SP请求设备分配用 于进行数据传输的 SP;
第二发送单元, 其向所述 SP请求设备发送 SP调度信息, 指示传输所述数据所 用的逻辑信道的绑定信息, 以便所述 SP请求设备在绑定的信道上进行通信。
2、 根据权利要求 1所述的装置, 其中, 所述主信道扫描指示消息包括: 扫描节点地址;
扫描信道号; 以及
扫描时间。
3、 根据权利要求 1所述的装置, 其中, 所述 SP调度信息包括:
分配的带宽;
绑定信道号; 以及
SP分配信息。
4、 根据权利要求 3所述的装置, 其中, 所述 SP分配信息包括:
SP传输的源节点地址;
SP传输的目的节点地址;
SP起始时间;
SP持续时间。
5、 根据权利要求 4所述的装置, 其中, 所述 SP分配信息还包括:
是否存在信道绑定的指示信息; 以及
传输方式指示信息。
6、 一种带宽分配装置, 应用于 SP请求设备, 其中, 所述装置包括: 发送单元, 其向网络控制节点发送 SP请求消息, 所述 SP请求消息包含请求带 宽、 源节点、 目的节点以及请求传输的时间长度; 扫描单元,其根据接收到的所述网络控制节点发送的主信道扫描指示消息, 在所 述主信道扫描指示消息所指示的候选主信道上进行信道扫描;
上报单元, 其将信道扫描的扫描报告发送给所述网络控制节点;
通信单元, 其根据接收到的所述网络控制节点发送的 SP调度信息, 在所述 SP 调度信息所指示的绑定的信道上进行通信。
7、 根据权利要求 6所述的装置, 其中, 所述扫描报告包括:
主信道号;
信标帧列表长度; 以及
信标帧信息列表。
8、根据权利要求 7所述的装置, 其中, 所述信标帧信息列表包含至少一条记录, 每一条记录对应所述 SP请求设备在扫描所述候选主信道时接收到的每个信标帧, 每 一条记录包括:
网络 ID;
网络控制节点地址;
信标间隔; 以及
无竞争数据传输调度时期 (SP) 或竞争接入时期 (CBAP) 调度信息。
9、 根据权利要求 6所述的装置, 其中, 所述扫描报告包括: 可用带宽及该可用 带宽所在的信道。
10、 根据权利要求 6所述的装置, 其中, 所述通信单元包括:
第一切换模块, 其在绑定的信道包括非工作信道时, 切换到绑定的该非工作信道 所属的主信道;
第一发送模块,其在所述绑定的该非工作信道所属的主信道上发送网络控制节点 的信标帧;
第二发送模块,其在发送完所述信标帧之后在绑定的该非工作信道及绑定的工作 信道上发送数据;
第二切换模块, 其在发送完所述数据之后切换回工作信道。
11、 根据权利要求 10所述的装置, 其中,
如果所述绑定的非工作信道所属的主信道为固定主信道,则所述第一发送模块在 所述绑定的非工作信道所属的主信道上发送所述信标帧; 如果所述绑定的非工作信道所属的主信道为灵活选择的主信道,则如果绑定的信 道为第一工作带宽的信道, 所述 SP请求设备在所述第一工作带宽的信道上发送所述 信标帧;
如果所述绑定的非工作信道所属的主信道为灵活选择的主信道,则如果绑定的信 道为第二工作带宽的信道, 所述 SP请求设备在与所述第二工作带宽的信道重叠的、 信道带宽比所述第二工作带宽的信道小的两个第一工作带宽的信道上发送所述信标 帧。
12、 一种通信系统, 其中, 所述通信系统包括网络控制节点和 SP请求设备, 其 中,
所述网络控制节点被配置为: 在没有足够的可用带宽分配给 SP请求设备时, 向 所述 SP请求设备发送主信道扫描指示消息, 指示所述 SP请求设备在候选主信道上 进行信道扫描; 根据所述 SP请求设备发送的扫描报告为所述 SP请求设备分配用于 进行数据传输的 SP; 向所述 SP请求设备发送 SP调度信息, 指示传输所述数据所用 的逻辑信道的绑定信息, 以便所述 SP请求设备在绑定的信道上进行通信。
所述 SP请求设备被配置为: 向网络控制节点发送 SP请求消息, 所述 SP请求消 息包含请求带宽、 源节点、 目的节点以及请求传输的时间长度; 根据接收到的所述网 络控制节点发送的主信道扫描指示消息,在所述主信道扫描指示消息所指示的候选主 信道上进行信道扫描; 将信道扫描的扫描报告发送给所述网络控制节点; 根据接收到 的所述网络控制节点发送的 SP调度信息, 在所述 SP调度信息所指示的绑定的信道 上进行通信。
PCT/CN2014/073440 2014-03-14 2014-03-14 带宽分配方法、装置和系统 WO2015135199A1 (zh)

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