CN102026297A - Method, system and node for channel negotiation - Google Patents

Method, system and node for channel negotiation Download PDF

Info

Publication number
CN102026297A
CN102026297A CN2009100933826A CN200910093382A CN102026297A CN 102026297 A CN102026297 A CN 102026297A CN 2009100933826 A CN2009100933826 A CN 2009100933826A CN 200910093382 A CN200910093382 A CN 200910093382A CN 102026297 A CN102026297 A CN 102026297A
Authority
CN
China
Prior art keywords
channel
node
vector information
allocation vector
network allocation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2009100933826A
Other languages
Chinese (zh)
Other versions
CN102026297B (en
Inventor
严晔
陈卫民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
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.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN 200910093382 priority Critical patent/CN102026297B/en
Publication of CN102026297A publication Critical patent/CN102026297A/en
Application granted granted Critical
Publication of CN102026297B publication Critical patent/CN102026297B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The present invention discloses a method, a system and nodes for channel negotiation. The method for channel negotiation comprises the following steps: a second node receives control messages from a first node, wherein the control messages carry multiple first network distribution vector messages including channel number, free waiting time corresponding to the channel number and transmission duration time of the data to be transmitted in the channel, besides, the first network distribution vector messages indicate the free channel resources of the first node; and the second node performs a channel negotiation with the first node according to the first network distribution vector messages as well as the channel and time distribution list of the second node. The present invention realizes data channel appointment in advance, increases the use efficiency and negotiation efficiency of data channels in the wireless network, realizes the negotiated use of control channels, and increases the whole resource utilization rate of the system by multiplexing the control channels as data channels.

Description

Channel machinery of consultation, system and node
Technical field
The embodiment of the invention relates to communication technical field, particularly a kind of channel machinery of consultation, system and node.
Background technology
Along with the high speed development of wireless technology and popularizing of wireless device, Radio Access Network particularly is that wireless mesh network (Mesh) the backbone network technology of representative has more and more caused people's attention with the wireless mesh network, becomes one of key technology of setting up next generation network.
Yet, current wireless medium access control (Media Access Control; Hereinafter to be referred as: MAC) agreement is mainly (the Institute of Electrical and Electronics Engineers of IEEE; Hereinafter to be referred as: IEEE) 802.11 protocol suites.The situation that the IEEE802.11 protocol suite has only been considered to have only a wireless network card and only used a wireless channel, thereby cause the load of wireless Mesh backbone network network not high:, can form serious phase mutual interference between the Wireless Mesh backbone node that closes on when the wireless Mesh backbone network network has comprised more Wireless Mesh backbone node and load when heavier.And the multi-hop pattern of wireless Mesh backbone network network makes that this phase mutual interference is even more serious and then makes the overall performance of whole wireless Mesh backbone network network descend, and the direct terminal equipment that inserts of influence can't be protected the service quality of the application that the terminal equipment of access obtains.
The negotiation mode that existing wireless network resource is distributed mainly comprises three kinds: (1) common channel framework; (2) dynamic channel allocation (Dynamic Channel Allocation; Hereinafter to be referred as: DCA); (3) dynamic dedicated channel (Dynamic Private Channel; Hereinafter to be referred as: DPC).
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art: three kinds of negotiation modes that the wireless network resource that prior art provides is distributed all can't shift to an earlier date the reservation data channel, and the data channel that causes the free time to be got off can not be used at once.
Summary of the invention
The embodiment of the invention provides a kind of channel machinery of consultation, system and node, to realize reservation data channel in advance, improves the service efficiency and the negotiation efficiency of data channel in the wireless network.
The embodiment of the invention provides a kind of channel machinery of consultation, comprising:
Section Point receives the control messages that first node sends, described control messages is carried many first network allocation vector information, the described first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on described channel of the channel of channel number, described channel number correspondence, and the described first network allocation vector information is indicated the idle channel resources of described first node;
According to the channel and the time allocation table of described first network allocation vector information and described Section Point, with described first node negotiated channel.
The embodiment of the invention also provides a kind of channel machinery of consultation, comprising:
Channel and time allocation table according to first node are provided with the first network allocation vector information, the described first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on described channel of the channel of channel number, described channel number correspondence, and the described first network allocation vector information is indicated the idle channel resources of described first node;
Transmit control message to Section Point, described control messages is carried the described first network allocation vector information, for described Section Point according to described first network allocation vector information and described first node negotiated channel.
The embodiment of the invention also provides a kind of Section Point, comprising:
Receiver module, be used to receive the control messages that first node sends, described control messages is carried many first network allocation vector information, the described first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on described channel of the channel of channel number, described channel number correspondence, and the described first network allocation vector information is indicated the idle channel resources of described first node;
Negotiation module is used for according to the first network allocation vector information of described receiver module reception and the channel and the time allocation table of described Section Point, with described first node negotiated channel.
The embodiment of the invention also provides a kind of first node, comprising:
Module is set, be used for the first network allocation vector information being set according to the channel and the time allocation table of first node, the described first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on described channel of the channel of channel number, described channel number correspondence, and the described first network allocation vector information is indicated the idle channel resources of described first node;
Sending module is used for transmitting control message to Section Point, and described control messages is carried the described first network allocation vector information that module is provided with that is provided with, for described Section Point according to described first network allocation vector information and described first node negotiated channel.
The embodiment of the invention also provides a kind of channel negotiating system, comprising: first node and Section Point,
Described first node, be used for the first network allocation vector information being set according to the channel and the time allocation table of described first node, and transmit control message to described Section Point, described control messages is carried many first network allocation vector information, the described first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on described channel of the channel of channel number, described channel number correspondence, and the described first network allocation vector information is indicated the idle channel resources of described first node;
Described Section Point is used to receive the control messages that described first node sends, and the first network allocation vector information of carrying according to described control messages and the channel and the time allocation table of described Section Point are with described first node negotiated channel.
Pass through the embodiment of the invention, when first node need be when Section Point sends data, first node transmits control message to Section Point, comprises many first network allocation vector information in this control messages, the idle channel resources of this first network allocation vector information indication first node; The Section Point that receives control messages can be according to the channel and the time allocation table of the first network allocation vector information and Section Point, with the first node negotiated channel, and Section Point and first node can shift to an earlier date the reservation data channel according to the idle waiting time of channel in the first network allocation vector information, thereby have improved the service efficiency and the negotiation efficiency of data channel in the wireless network.
Description of drawings
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of an embodiment of channel machinery of consultation of the present invention;
Fig. 2 is the flow chart of another embodiment of channel machinery of consultation of the present invention;
Fig. 3 is the signaling process figure of another embodiment of channel machinery of consultation of the present invention;
Fig. 4 is the schematic diagram of a RTS request package of the present invention and an embodiment of CTS respond packet;
Fig. 5 is the schematic diagram of RTS request package of the present invention and another embodiment of CTS respond packet;
Fig. 6 is the schematic diagram of the multiplexing embodiment of control channel of the present invention;
Fig. 7 is the structural representation of an embodiment of Section Point of the present invention;
Fig. 8 is the structural representation of another embodiment of Section Point of the present invention;
Fig. 9 is the structural representation of an embodiment of first node of the present invention;
Figure 10 is the structural representation of another embodiment of first node of the present invention;
Figure 11 is the structural representation of an embodiment of channel negotiating system of the present invention.
Embodiment
Below in conjunction with the accompanying drawing among the present invention, the technical scheme among the present invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope of protection of the invention.
Fig. 1 is the flow chart of an embodiment of channel machinery of consultation of the present invention, and as shown in Figure 1, present embodiment comprises:
Step 101, Section Point receives the control messages that first node sends, this control messages is carried many first network allocation vector information, the first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on this channel of the channel of channel number, this channel number correspondence, the idle channel resources of first network allocation vector information indication first node.Wherein, the idle waiting time of the channel of this channel number correspondence is about to the idle stand-by period for this channel, and promptly this channel is in idle condition after the idle waiting time arrives.
In the present embodiment, when first node need be when Section Point sends data, first node is provided with the first network allocation vector information according to the channel and the time allocation table of this first node, and sends the control messages of the first network allocation vector information of carrying to Section Point.
Step 102, Section Point is according to the channel and the time allocation table of the first network allocation vector information and this Section Point, with the first node negotiated channel.Be specifically as follows:
When channel and the time allocation table of Section Point according to this Section Point, when determining that this Section Point has the idle channel resources corresponding with the first network allocation vector information, Section Point is replied response message to first node, and this response message carries negotiation and successfully indicates one first network allocation vector information with the idle channel resources correspondence; And according to the channel and the time allocation table of this first network allocation vector information updating Section Point; Neighbor node at Section Point receives Section Point after the response message that carrying of first node transmission consults successfully to indicate, the neighbor node of this Section Point upgrades the channel and the time allocation table of the neighbor node self of this Section Point also according to the first network allocation vector information in this response message;
Wherein, every record in the channel of Section Point and the time allocation table comprises the residue duration of channel number He this channel occupancy of the channel that Section Point takies, Section Point determine this Section Point have the idle channel resources corresponding with the first network allocation vector information can for:
When do not comprise in the channel of Section Point and the time allocation table with the first network allocation vector information in the corresponding record of channel number the time, perhaps, when comprise in the channel of Section Point and the time allocation table with the first network allocation vector information in the corresponding record of channel number, and the idle waiting time of the channel of channel number correspondence during the duration, determines that this Section Point has and the corresponding idle channel resources of the first network allocation vector information more than or equal to the residue of channel occupancy in the above-mentioned record in the first network allocation vector information.Wherein, do not comprise in the channel of Section Point and the time allocation table with the first network allocation vector information in the corresponding record of channel number, the current idle condition that is in of channel of this channel number correspondence is described; Comprise in the channel of Section Point and the time allocation table with the first network allocation vector information in the corresponding record of channel number, the channel that this channel number correspondence is described is current occupied, but since in the above-mentioned record residue duration of this channel occupancy less than idle waiting time of channel in the first network allocation vector information, therefore after the idle waiting time arrived, the channel of this channel number correspondence was in idle condition.
When Section Point determines that idle channel resources corresponding with the first network allocation vector information in this Section Point has many, Section Point can be selected wherein idle channel resources according to predetermined policy, and the first network allocation vector information of this idle channel resources correspondence is carried at is sent to first node in the response message.Particularly, when above-mentioned many idle channel resources only comprised the channel of current free time, Section Point can be selected an idle channel according to system requirements in the channel of current free time; The channel that had both comprised the current free time when above-mentioned many idle channel resources, comprise current taking but idle waiting time after arriving during idle channel again, Section Point can preferentially be selected the channel of current free time, if the channel of current free time is not unique, then Section Point can be selected an idle channel according to system requirements in the channel of current free time; When above-mentioned many idle channel resources only comprise current taking but idle waiting time after arriving during idle channel, Section Point can be according to the length of idle waiting time, select a shortest channel of idle waiting time, when more than one of the shortest channel of idle waiting time, Section Point can be according to system requirements, the channel that selective channel situation optimum and idle waiting time are the shortest.Said system requires can be for postponing in the requirements such as minimum and channel performance the best one or more.Below only be Section Point is selected an idle channel resources in many idle channel resources of the first network allocation vector information correspondence several modes; the embodiment of the invention is not limited in this, any protection range that can all should fall into the embodiment of the invention in the mode of selecting an idle channel resources in many idle channel resources of the first network allocation vector information correspondence.
When channel and the time allocation table of Section Point according to this Section Point, when determining that this Section Point does not have the idle channel resources corresponding with the first network allocation vector information, reply response message to first node, this response message carries consults the failure flags and the second network allocation vector information, and this second network allocation vector information is indicated the idle channel resources of described Section Point; Wherein, this second network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on this channel of the channel of channel number, this channel number correspondence equally; This second network allocation vector information is channel and the time allocation table setting of Section Point according to self, be specifically as follows: when comprise in the channel of Section Point and the time allocation table with the second network allocation vector information in the corresponding record of channel number the time, Section Point is provided with the residue duration of the idle waiting time of the channel of this channel number correspondence in this second network allocation vector information more than or equal to this channel occupancy in the above-mentioned record, the free time that promptly first node and Section Point are consulted after to be that this channel is occupied finish; The transmitting continuous time of data to be transmitted in the second network allocation vector information on this channel is identical with the transmitting continuous time of data to be transmitted on this channel in the first network allocation vector information;
Wherein, determine that this Section Point does not have the idle channel resources corresponding with the first network allocation vector information and is specifically as follows: when comprise in the channel of Section Point and the time allocation table with the first network allocation vector information in the corresponding record of channel number, and during the duration, Section Point can determine that this Section Point does not have and the corresponding idle channel resources of the first network allocation vector information less than the residue of channel occupancy in the above-mentioned record idle waiting time of the channel of channel number correspondence in the first network allocation vector information.
In the present embodiment, the neighbor node of Section Point or Section Point upgrade channel and time allocation table step can for:
When comprise in channel and the time allocation table with the first network allocation vector information in the corresponding record of channel number, and the idle waiting time of the channel of this channel number correspondence and the data to be transmitted transmitting continuous time sum on this channel is greater than the residue of channel occupancy in the above-mentioned record during duration in the first network allocation vector information, and residue duration of channel occupancy in this record is updated to idle waiting time and transmitting continuous time sum;
When do not comprise in channel and the time allocation table with the first network allocation vector information in the corresponding record of channel number the time, in this channel and time allocation table, add a record, channel number in the record that adds is the channel number in the first network allocation vector information, and the residue duration of the channel occupancy of the channel number correspondence in the record of interpolation is the idle waiting time and the transmitting continuous time sum of data to be transmitted on this channel of the channel of this channel number correspondence in the first network allocation vector information.
In the foregoing description, Section Point receives the control messages that first node sends, channel and time allocation table according to first network allocation vector information in this control messages and Section Point, with the first node negotiated channel, and Section Point and first node can shift to an earlier date the reservation data channel according to the idle waiting time of channel in the first network allocation vector information, thereby have improved the service efficiency and the negotiation efficiency of data channel in the wireless network.
Fig. 2 is the flow chart of another embodiment of channel machinery of consultation of the present invention, and as shown in Figure 2, this embodiment comprises:
Step 201, first node is provided with the first network allocation vector information according to the channel and the time allocation table of this first node, this first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on this channel of the channel of channel number, this channel number correspondence, the idle channel resources of this first network allocation vector information indication first node.Wherein, the idle waiting time of the channel of this channel number correspondence is about to the idle stand-by period for this channel, and promptly this channel is in idle condition after the idle waiting time arrives.
In the present embodiment, every record in the channel of first node and the time allocation table comprises the residue duration of channel number He this channel occupancy of the channel that first node takies, first node is provided with the first network allocation vector information according to the channel of this first node with the time allocation table and is specifically as follows: when comprise in the channel of first node and the time allocation table with the first network allocation vector information in the corresponding record of channel number the time, first node is provided with the residue duration of the idle waiting time of the channel of this channel number correspondence in this first network allocation vector information more than or equal to this channel occupancy in the above-mentioned record, the free time that promptly first node and Section Point are consulted after to be that this channel is occupied finish;
When do not comprise in the channel of first node and the time allocation table with the first network allocation vector information in the corresponding record of channel number the time, the idle waiting time that first node is provided with the channel of this channel number correspondence in this first network allocation vector information is zero.
Step 202, first node transmits control message to Section Point, this control messages is carried the above-mentioned first network allocation vector information, for Section Point according to the first network allocation vector information and first node negotiated channel.
In the present embodiment, first node need be when Section Point sends data, first node at first is provided with the first network allocation vector information according to self channel and time allocation table, send the control messages of the first network allocation vector information of carrying then to Section Point, the Section Point that receives this control messages can be according to the first network allocation vector information in this control messages, and the channel of this Section Point and time allocation table and first node negotiated channel.
Step 203, first node receives the response message that Section Point is replied.
In the present embodiment, when Section Point determines that this Section Point has the idle channel resources corresponding with the first network allocation vector information, consult successfully, this Section Point is replied response message to first node, and this response message carries that negotiation successfully indicates and one first network allocation vector information of the idle channel resources correspondence of this Section Point;
Receive carry the response message of consulting successfully sign after, first node is according to carrying the first network allocation vector information that the response message of consulting successfully to indicate carries, upgrade the channel and the time allocation table of this first node, on the channel of the channel number correspondence in this first network allocation vector information, and after the idle waiting time of the channel that this first network allocation vector information is carried arrives, send data to be transmitted to Section Point.
And first node sends first response message to this first node, and this first response message carries negotiation and successfully indicates and carry the first network allocation vector information that the response message of consulting successfully sign carries; The neighbor node of first node is receiving first node after first response message that first node self sends, according to the channel and the time allocation table of the neighbor node self of first this first node of network allocation vector information updating in first response message.Wherein, the mode that the neighbor node of first node and this first node upgrades description in the mode of channel and time allocation table and the step 102 is identical, does not repeat them here.
In the present embodiment, when Section Point determines that this Section Point does not have the idle channel resources corresponding with the first network allocation vector information, consult failure, this Section Point can be replied response message to first node equally, this response message carries the failure flags and the second network allocation vector information of consulting, this second network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on channel of the channel of channel number, this channel number correspondence, the idle channel resources of this second network allocation vector information indication Section Point.The set-up mode of the second network allocation vector information is identical with the mode of description in the step 102 in the present embodiment, does not repeat them here.
After receiving the response message that carries the negotiation failure flags, first node transmits control message once more to Section Point, and the channel of a beginning new round is consulted.
When channel and the time allocation table of first node according to this first node, when determining that this first node has the idle channel resources corresponding with the second network allocation vector information, this first node carries the second network allocation vector information of idle channel resources correspondence in the control messages that Section Point sends once more.Carry out channel according to the second network allocation vector information of Section Point suggestion and consult, can improve the negotiation success rate.
Wherein, first node determine this first node have the idle channel resources corresponding with the second network allocation vector information can for: when do not comprise in the channel of first node and the time allocation table with the second network allocation vector information in the corresponding record of channel number the time, perhaps, when comprise in the channel of first node and the time allocation table with the second network allocation vector information in the corresponding record of channel number, and the idle waiting time of the channel of channel number correspondence during the duration, determines that this first node has and the corresponding idle channel resources of the second network allocation vector information greater than the residue of channel occupancy in the record in the second network allocation vector information.
If first node is determined this first node and is not had and the corresponding idle channel resources of the second network allocation vector information, the first node idle channel resources that can determine this first node according to the channel and the time allocation table of this first node then, the first corresponding network allocation vector information is set, and this first network allocation vector information is carried in the control messages, send once more to Section Point, the channel of a beginning new round is consulted.
Wherein, first node determine this first node do not have the idle channel resources corresponding with the second network allocation vector information can for: when comprise in the channel of first node and the time allocation table with the second network allocation vector information in the corresponding record of channel number, and first node determines that this first node does not have and the corresponding idle channel resources of the second network allocation vector information less than the residue of channel occupancy is during the duration in the record idle waiting time of the channel of channel number correspondence in the second network allocation vector information.
In addition, in embodiments of the present invention, when the data channel of first node and Section Point all occupied, and the transmitting continuous time of data to be transmitted is less than the idle waiting of all data channels during the time, first node can transmit control message to Section Point, the first network allocation vector information in this control messages comprises the channel number of the control channel between first node and the Section Point, the idle waiting time of this control channel and the data to be transmitted transmitting continuous time on control channel, consult control channel for Section Point according to this first network allocation vector information and first node, wherein, the idle waiting time of control channel is zero.
And if the idle waiting time of certain bar data channel less than the transmitting continuous time of data to be transmitted, then first node still can preferentially be preengage this data channel, according to this data channel the first network allocation vector information is set.That is to say, have only when all data channel all occupiedly, and when enough multiplexing time was arranged on time slot, first node just can consult to use control channel with Section Point, control channel is multiplexed into data channel temporarily, increases the whole resource utilization of system.
In the foregoing description, when first node need be when Section Point sends data, first node transmits control message to Section Point, comprises many first network allocation vector information in this control messages, the idle channel resources of this first network allocation vector information indication first node.The Section Point that receives control messages can be according to the channel and the time allocation table of the first network allocation vector information and Section Point, with the first node negotiated channel, and Section Point and first node can shift to an earlier date the reservation data channel according to the idle waiting time of channel in the first network allocation vector information, thereby have improved the service efficiency and the negotiation efficiency of data channel in the wireless network.Further, all occupied when all data channels, and when enough multiplexing time was arranged on time slot, first node can consult to use control channel with Section Point, control channel is multiplexed into data channel temporarily, thereby has increased the whole resource utilization of system.
Fig. 3 is the signaling process figure of another embodiment of channel machinery of consultation of the present invention, and in the present embodiment, first node is the A node, and Section Point is the B node, and control messages sends (Request To Send for request; Hereinafter to be referred as: RTS) request package, response message is for allowing to send (Clear To Send; Hereinafter to be referred as: CTS) respond packet.As shown in Figure 3, this embodiment comprises:
Step 301, the A node is provided with first network allocation vector (Network Allocation Vector according to the channel and the time allocation table of A node self; Hereinafter to be referred as: NAV) information, this NAV information is carried the idle waiting time (offset time) and the transmitting continuous time (Duration) of data to be transmitted on this channel of the channel of channel (Channel) number, this channel number correspondence, this NAV information indication be the idle channel resources of A node.
In the present embodiment, each node in the network participates in or intercepts RTS request package/CTS respond packet and dynamically safeguards channel and the time allocation table of self on Common Control Channel, and then writes down the instant operating position of each data channel.Comprise many records in channel and the time allocation table, every record in these records comprises residue duration of channel number He this channel occupancy of the channel that node takies, the form of the data structure of every record can for:
ChannelStatusList[i]：
1, Channel No.: channel number
2, Busy Duration: residue duration of the channel occupancy of above-mentioned channel number correspondence but the embodiment of the invention is not limited in this, above-mentioned record can adopt array form, chain sheet form or other forms, and the embodiment of the invention does not limit the concrete form that adopts of these records.
The A node is provided with a NAV information according to the channel of A node self and time allocation table and is specifically as follows:
When comprise in the channel of A node and the time allocation table with a NAV information in the corresponding record of channel number the time, the current channel that is taking this channel number correspondence of A node is described, the A node is provided with the residue duration of the idle waiting time of the channel of this channel number correspondence in the NAV information more than or equal to this channel occupancy in the above-mentioned record, the free time that promptly A node and B node are consulted after to be that this channel is occupied finish; When do not comprise in the channel of A node and the time allocation table with a NAV information in the corresponding record of channel number the time, the current idle condition that is in of channel of this channel number correspondence is described, the idle waiting time that the A node is provided with the channel of this channel number correspondence in the NAV information is zero.
Step 302, the A node sends the RTS request package to the B node, and this RTS request package is carried many NAV information.
Need be when the B node send data at the A node, the A node at first is provided with a NAV information, sends the RTS request package of the NAV information of carrying then to the B node.
Step 303, B node receive after the RTS request package, according to the channel and the time allocation table of the NAV information in this RTS request package and this B node, judge whether the B node has and the corresponding idle channel resources of a NAV information.
Wherein, judge that the B node has the idle channel resources corresponding with a NAV information and is specifically as follows: when do not comprise in the channel of B node and the time allocation table with a NAV information in the corresponding record of channel number the time, perhaps, when comprise in the channel of B node and the time allocation table with a NAV information in the corresponding record of channel number, and during the duration, the B node determines that this B node has and the corresponding idle channel resources of a NAV information more than or equal to the residue of channel occupancy in the above-mentioned record idle waiting time of the channel of channel number correspondence in the NAV information.Wherein, do not comprise in the channel of B node and the time allocation table with a NAV information in the corresponding record of channel number, the current idle condition that is in of channel of this channel number correspondence is described; Comprise in the channel of B node and the time allocation table with a NAV information in the corresponding record of channel number, the channel that this channel number correspondence is described is current occupied, but since in the above-mentioned record residue duration of this channel occupancy less than idle waiting time of channel in the NAV information, therefore after the idle waiting time arrived, the channel of this channel number correspondence was in idle condition.
Wherein, judge that the B node does not have the idle channel resources corresponding with a NAV information and is specifically as follows: when comprise in the channel of B node and the time allocation table with a NAV information in the corresponding record of channel number, and during the duration, the B node can determine that this B node does not have and the corresponding idle channel resources of a NAV information less than the residue of channel occupancy in the above-mentioned record idle waiting time of the channel of channel number correspondence in the NAV information.
Step 304, the B node is replied the CTS respond packet to the A node.
When the B node determines that this B node has the idle channel resources corresponding with a NAV information, illustrate and consult successfully, the B node is with the affirmation position " 1 " of CTS respond packet, reply the CTS respond packet to the A node, this CTS respond packet is carried one article of the one NAV information that negotiation successfully indicates (confirming that the position is " 1 ") and idle channel resources correspondence.Fig. 4 is the schematic diagram of a RTS request package of the present invention and an embodiment of CTS respond packet, and among Fig. 4, the affirmation position of RTS request package is " 0 ", carries many articles the one NAV information; The affirmation position of CTS respond packet is " 1 ", and expression is consulted successfully, and one article of the one NAV information of idle channel resources correspondence.Among Fig. 4, C represents channel number, and T represents the idle waiting time of the channel of this channel number correspondence, and D represents the transmitting continuous time of data to be transmitted on this channel.
When the B node determines that idle channel resources corresponding with a NAV information in this B node has many, the B node can be selected wherein idle channel resources according to predetermined policy, and a NAV information of this idle channel resources correspondence is carried at is sent to the A node in the CTS respond packet.Particularly, when above-mentioned many idle channel resources only comprised the channel of current free time, the B node can be selected an idle channel according to system requirements in the channel of current free time; The channel that had both comprised the current free time when above-mentioned many idle channel resources, comprise current taking but idle waiting time after arriving during idle channel again, the B node can preferentially be selected the channel of current free time, if the channel of current free time is not unique, then the B node can be selected an idle channel according to system requirements in the channel of current free time; When above-mentioned many idle channel resources only comprise current taking but idle waiting time after arriving during idle channel, the B node can be according to the length of idle waiting time, select a shortest channel of idle waiting time, when more than one of the shortest channel of idle waiting time, the B node can be according to system requirements, the channel that selective channel situation optimum and idle waiting time are the shortest.Said system requires can be for postponing in the requirements such as minimum and channel performance the best one or more.Below only be the B node is selected an idle channel resources in many idle channel resources of a NAV information correspondence several modes; the embodiment of the invention is not limited in this, any protection range that can all should fall into the embodiment of the invention in the mode of selecting an idle channel resources in many idle channel resources of a NAV information correspondence.
When the B node determines that this B node does not have the idle channel resources corresponding with a NAV information, illustrate and consult failure, the B node is with the affirmation position " 0 " of CTS respond packet, reply the CTS respond packet to the A node, this CTS respond packet is carried failure flags (confirming that the position is " 0 ") and the 2nd NAV information of consulting.Fig. 5 is the schematic diagram of RTS request package of the present invention and another embodiment of CTS respond packet, and among Fig. 5, the affirmation position of RTS request package is " 0 ", carries many articles the one NAV information; The affirmation position of CTS respond packet is " 0 ", and failure is consulted in expression, and many articles the 2nd NAV information.Among Fig. 5, C represents channel number, and T represents the idle waiting time of the channel of this channel number correspondence, and D represents the transmitting continuous time of data to be transmitted on this channel.
The idle channel resources of the 2nd NAV information indication B node; Wherein, the 2nd NAV information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on this channel of the channel of channel number, this channel number correspondence equally; The 2nd NAV information is channel and the time allocation table setting of B node according to self, be specifically as follows: when comprise in the channel of B node and the time allocation table with the 2nd NAV information in the corresponding record of channel number the time, the B node is provided with the residue duration of the idle waiting time of the channel of this channel number correspondence in the 2nd NAV information more than or equal to this channel occupancy in the above-mentioned record, the free time that promptly A node and B node are consulted after to be that this channel is occupied finish; The transmitting continuous time of data to be transmitted in the 2nd NAV information on this channel is identical with the transmitting continuous time of data to be transmitted on this channel in the NAV information.
Step 305 is replied when carrying the CTS respond packet of consulting successful sign to the A node when the B node, and B node basis is carried the channel and the time allocation table of this B node of a NAV information updating self in the CTS respond packet of consulting successfully to indicate.
The neighbor node of B node receives the B node after the CTS respond packet that carrying of A node transmission consults successfully to indicate, the neighbor node of this B node upgrades the channel and the time allocation table of the neighbor node self of this B node also according to the NAV information in this CTS respond packet.
The step of upgrading channel and time allocation table is specifically as follows:
When comprise in channel and the time allocation table with a NAV information in the corresponding record of channel number, and the idle waiting time of the channel of this channel number correspondence and the data to be transmitted transmitting continuous time sum on this channel is greater than the residue of channel occupancy in the above-mentioned record during duration in the NAV information, and residue duration of channel occupancy in this record is updated to idle waiting time and transmitting continuous time sum;
When do not comprise in channel and the time allocation table with a NAV information in the corresponding record of channel number the time, in this channel and time allocation table, add a record, channel number in the record that adds is the channel number in the NAV information, and the residue duration of the channel occupancy of the channel number correspondence in the record of interpolation is the idle waiting time and the transmitting continuous time sum of data to be transmitted on this channel of the channel of this channel number correspondence in the NAV information.
With CTS respond packet shown in Figure 4 is example, if in the channel of node and the time allocation table, comprise and C 11Corresponding record, and T 11With D 11Sum is greater than the Busy Duration in this record, and the Busy Duration in then will writing down is updated to T 11With D 11Sum; If in the channel of node and the time allocation table, do not comprise and C 11Corresponding record then adds a new record in channel and time allocation table, the channel number of the record of interpolation is C 11, C 11Corresponding Busy Duration is T 11With D 11Sum.
When the transmission of B node is that the B node need not upgrade channel and the time allocation table of self when carrying the CTS respond packet of consulting failure flags; Equally, the neighbor node of B node receives and carries after the CTS respond packet of consulting failure flags, also need not handle.
Step 306, receive and carry after the CTS respond packet of consulting successfully to indicate, the A node is according to carrying the NAV information that the CTS respond packet of consulting successfully to indicate is carried, upgrade the channel and the time allocation table of this A node, on the channel of the channel number correspondence in a NAV information, and after the idle waiting time of the channel that a NAV information is carried arrives, send data to be transmitted to the B node.
With CTS respond packet shown in Figure 4 is example, and the A node receives after the CTS respond packet, according to a NAV information updating channel and the time allocation table in this CTS respond packet, and at C 11On the corresponding channel, at T 11After the arrival, send data to be transmitted to the B node.
Wherein, the mode of describing in the mode of A node updates channel and time allocation table and the step 305 is identical, does not repeat them here.
Step 307, receive and carry after the CTS respond packet of consulting successfully to indicate, the A node sends a CTS respond packet to this A node, the information that this CTS respond packet is carried is identical with the information of carrying in the CTS respond packet of consulting successfully to indicate that the A node receives, and promptly carries identical negotiation and successfully indicates and an identical NAV information.
The neighbor node of A node is receiving the A node after the CTS respond packet that A node self sends, according to the channel and the time allocation table of the neighbor node self of this A node of NAV information updating in this CTS respond packet.Wherein, the mode that the neighbor node of A node upgrades description in the mode of channel and time allocation table and the step 305 is identical, does not repeat them here.
Step 308, after receiving the CTS respond packet of carrying the negotiation failure flags, the A node sends the RTS request package once more to the B node, returns execution in step 302, and the channel of a beginning new round is consulted.
When channel and the time allocation table of A node according to this A node, when determining that this A node has the idle channel resources corresponding with the 2nd NAV information, the A node carries the 2nd NAV information of idle channel resources correspondence in the RTS request package that the B node sends once more.Carry out channel according to the second network allocation vector information of Section Point suggestion and consult, can improve the negotiation success rate.
Wherein, the A node determine this A node have the idle channel resources corresponding with the 2nd NAV information can for: when do not comprise in the channel of A node and the time allocation table with the 2nd NAV information in the corresponding record of channel number the time, perhaps, when comprise in the channel of A node and the time allocation table with the 2nd NAV information in the corresponding record of channel number, and the idle waiting time of the channel of channel number correspondence during the duration, determines that this A node has and the corresponding idle channel resources of the 2nd NAV information greater than the residue of this channel occupancy in the above-mentioned record in the 2nd NAV information.
With CTS respond packet shown in Figure 5 is example, and after receiving this CTS respond packet, the A node can determine whether have and C in the channel of this A node and the time allocation table earlier 21... or C 2nCorresponding record if do not have corresponding record in the channel of this A node and the time allocation table, perhaps has and C in the channel of this A node and the time allocation table 21... or C 2nCorresponding record, supposing has and C in the channel of this A node and the time allocation table 21Corresponding record, and T 21Greater than C 21C in the corresponding record 21Corresponding Busy Duration can determine that then the A node has and the corresponding idle channel resources of the 2nd NAV information.
If the A node is determined this A node and is not had and the corresponding idle channel resources of the 2nd NAV information, the A node idle channel resources that can determine this A node according to the channel and the time allocation table of this A node then, a corresponding NAV information is set, and a NAV information is carried in the RTS request package.
Wherein, the A node determine this A node do not have the idle channel resources corresponding with the 2nd NAV information can for: when comprise in the channel of A node and the time allocation table with the 2nd NAV information in the corresponding record of channel number, and the A node determines that this A node does not have and the corresponding idle channel resources of the 2nd NAV information less than the residue of channel occupancy is during the duration in the record idle waiting time of the channel of channel number correspondence in the 2nd NAV information.
Be example with CTS respond packet shown in Figure 5 still, after receiving this CTS respond packet, the A node determines have and C in the channel of this A node and the time allocation table 21... or C 2nCorresponding record is supposed to have only and C in the channel of this A node and the time allocation table 21Corresponding record, and T 21Less than C 21C in the corresponding record 21Corresponding Busy Duration can determine that then the A node does not have and the corresponding idle channel resources of the 2nd NAV information.
In the present embodiment, the RTS request package that a plurality of nodes send in the network may clash.After the RTS request package clashed, each node was carried out retransmission mechanism up to successfully sending the RTS request package in the retransmission limit number of times.If surpass the retransmission limit number of times, still can't successfully send the RTS signaling packet, then should consult failure by wheel.
In addition, in embodiments of the present invention, all occupied when the data channel of A node and B node, and time of control channel free time when longer, A node and B node can be consulted to use control channel to transmit data.After control channel was by data occupancy, just negotiated channel more therefore in order to guarantee the abundant use of other data channels, need guarantee that other data channels temporarily can not get off the free time during control channel transmission data.Particularly, in the present embodiment, when the data channel of A node and B node all occupied, and the transmitting continuous time of data to be transmitted is less than the idle waiting of all data channels during the time, the A node sends the RTS request package to the B node, NAV information in this RTS request package comprises the channel number of the control channel between A node and the B node, the idle waiting time of this control channel and the data to be transmitted transmitting continuous time on control channel, consult control channel for the B node according to NAV information and A node, wherein, the idle waiting time of control channel is zero.After consulting successfully, the A node can send data to the B node on control channel, and as shown in Figure 6, Fig. 6 is the schematic diagram of the multiplexing embodiment of control channel of the present invention.
And if the idle waiting time of certain bar data channel less than the transmitting continuous time of data to be transmitted, then the A node still can preferentially be preengage this data channel, according to this data channel the one NAV information is set.That is to say to have only when all data channels all occupiedly, and when enough multiplexing time was arranged on time slot, the A node just can be consulted to use control channel with the B node, and control channel is multiplexed into data channel temporarily, increases the whole resource utilization of system.
In the foregoing description, when the A node need be when the B node sends data, the A node sends the RTS request package to the B node, comprises many articles the one NAV information in this RTS request package, the idle channel resources of NAV information indication A node.The B node that receives the RTS request package can be according to the channel and the time allocation table of NAV information and B node, with A node negotiated channel, and B node and A node can shift to an earlier date the reservation data channel according to the idle waiting time of channel in the NAV information, thereby have improved the service efficiency and the negotiation efficiency of data channel in the wireless network.Further, all occupied when all data channels, and when enough multiplexing time was arranged on time slot, the A node can be consulted to use control channel with the B node, control channel is multiplexed into data channel temporarily, thereby has increased the whole resource utilization of system.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Fig. 7 is the structural representation of an embodiment of Section Point of the present invention, and the Section Point of present embodiment can be realized the flow process that the present invention is embodiment illustrated in fig. 1, and as shown in Figure 7, this Section Point can comprise: receiver module 71 and negotiation module 72.
Particularly, receiver module 71 can receive the control messages that first node sends, this control messages is carried many first network allocation vector information, the first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on this channel of the channel of channel number, this channel number correspondence, the idle channel resources of first network allocation vector information indication first node; Negotiation module 72 can be according to the first network allocation vector information of receiver module 71 receptions and the channel and the time allocation table of Section Point, with the first node negotiated channel.
In the foregoing description, receiver module 71 receives the control messages that first node sends, negotiation module 72 is according to the channel and the time allocation table of first network allocation vector information in this control messages and Section Point, with the first node negotiated channel, and Section Point and first node can shift to an earlier date the reservation data channel according to the idle waiting time of channel in the first network allocation vector information, thereby have improved the service efficiency and the negotiation efficiency of data channel in the wireless network.
Fig. 8 is the structural representation of another embodiment of Section Point of the present invention, the Section Point of present embodiment can be realized the flow process that the present invention is embodiment illustrated in fig. 1, as shown in Figure 8, this Section Point can comprise: receiver module 81, negotiation module 82 and update module 83.
Particularly, receiver module 81 can receive the control messages that first node sends, this control messages is carried many first network allocation vector information, the first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on this channel of the channel of channel number, this channel number correspondence, the idle channel resources of first network allocation vector information indication first node; Negotiation module 82 can be according to the first network allocation vector information of receiver module 81 receptions and the channel and the time allocation table of Section Point, with the first node negotiated channel.
Wherein, negotiation module 82 can comprise: judge submodule 821 and revertant module 822.Judgement submodule 821 can judge whether this Section Point has and the corresponding idle channel resources of the above-mentioned first network allocation vector information according to the channel and the time allocation table of Section Point; Revertant module 822 can be replied response message to first node in the judged result of judging submodule 821 for certainly the time, this response message carries negotiation and successfully indicates one first network allocation vector information with the idle channel resources correspondence; When revertant module 822 can also be negative in the judged result of judgement submodule 821, reply response message to first node, this response message carries the failure flags and the second network allocation vector information of consulting, the idle channel resources of this second network allocation vector information indication Section Point.
In the present embodiment, update module 83 can be according to the channel and the time allocation table that carry the first network allocation vector information updating Section Point in the response message of consulting successfully to indicate.
Wherein, update module 83 can comprise: record updating submodule 831 and record add submodule 832.Particularly, record updating submodule 831 can work as comprise in channel and the time allocation table with the first network allocation vector information in the corresponding record of channel number, and the idle waiting time of the channel of this channel number correspondence and the data to be transmitted transmitting continuous time sum on this channel is greater than the residue of this channel occupancy in the above-mentioned record during duration in the first network allocation vector information, and residue duration of channel occupancy in the above-mentioned record is updated to idle waiting time and transmitting continuous time sum;
Record add submodule 832 can work as do not comprise in channel and the time allocation table with the first network allocation vector information in the corresponding record of channel number the time, in channel and time allocation table, add a record, channel number in the record that adds is the channel number in the first network allocation vector information, and the residue duration of the channel occupancy of the channel number correspondence in the record of interpolation is the idle waiting time and the transmitting continuous time sum of data to be transmitted on this channel of the channel of this channel number correspondence in the first network allocation vector information.
In the foregoing description, receiver module 81 receives the control messages that first node sends, negotiation module 82 is according to the channel and the time allocation table of first network allocation vector information in this control messages and Section Point, with the first node negotiated channel, and Section Point and first node can shift to an earlier date the reservation data channel according to the idle waiting time of channel in the first network allocation vector information, thereby have improved the service efficiency and the negotiation efficiency of data channel in the wireless network.
Fig. 9 is the structural representation of an embodiment of first node of the present invention, and the first node of present embodiment can be realized the flow process that the present invention is embodiment illustrated in fig. 2, and as shown in Figure 9, this first node can comprise: module 91 and sending module 92 are set.
Particularly, module 91 is set according to the channel and the time allocation table of first node the first network allocation vector information is set, this first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on this channel of the channel of channel number, this channel number correspondence, the idle channel resources of this first network allocation vector information indication first node; Sending module 92 can transmit control message to Section Point, and this control messages is carried the first network allocation vector information that module 91 is provided with is set, for Section Point according to this first network allocation vector information and first node negotiated channel.
In the foregoing description, when first node need be when Section Point sends data, module 91 is set the first network allocation vector information is set, sending module 92 transmits control message to Section Point, comprise in this control messages that many are provided with the first network allocation vector information that module 91 is provided with, the idle channel resources of this first network allocation vector information indication first node.Thereby the Section Point that receives control messages can be according to the channel and the time allocation table of the first network allocation vector information and Section Point, with the first node negotiated channel, and Section Point and first node can shift to an earlier date the reservation data channel according to the idle waiting time of channel in the first network allocation vector information, thereby have improved the service efficiency and the negotiation efficiency of data channel in the wireless network.
Figure 10 is the structural representation of another embodiment of first node of the present invention, the first node of present embodiment can be realized the flow process that the present invention is embodiment illustrated in fig. 2, as shown in figure 10, this first node can comprise: module 1001, sending module 1002, message sink module 1003 and first update module 1004 are set.
Particularly, module 1001 is set according to the channel and the time allocation table of first node the first network allocation vector information is set, this first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on this channel of the channel of channel number, this channel number correspondence, the idle channel resources of this first network allocation vector information indication first node; Sending module 1002 can transmit control message to Section Point, and this control messages is carried the first network allocation vector information that module 1001 is provided with is set, for Section Point according to this first network allocation vector information and first node negotiated channel.
Wherein, module 1001 being set can comprise: first is provided with submodule 10011 and second is provided with submodule 10012.Particularly, first be provided with comprise in channel that submodule 10011 can work as first node and the time allocation table with the first network allocation vector information in the corresponding record of channel number the time, the residue duration of the idle waiting time of the channel of this channel number correspondence in the first network allocation vector information more than or equal to this channel occupancy in the above-mentioned record is set; Second be provided with do not comprise in channel that submodule 10012 can work as first node and the time allocation table with the first network allocation vector information in the corresponding record of channel number the time, the idle waiting time that the channel of this channel number correspondence in the first network allocation vector information is set is zero.
In the present embodiment, message sink module 1003 can receive the response message that Section Point is replied, and this response message carries negotiation and successfully indicates one first network allocation vector information with the idle channel resources correspondence of Section Point; Perhaps, this response message carries the failure flags and the second network allocation vector information of consulting, this second network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on channel of the channel of channel number, this channel number correspondence, the idle channel resources of this second network allocation vector information indication Section Point.
First update module 1004 can message sink module 1003 receive carry the response message of consulting successfully sign after, according to carrying the first network allocation vector information that the response message of consulting successfully sign carries, upgrade the channel and the time allocation table of first node; At this moment, sending module 1002 can also be on the channel of the channel number correspondence in the first network allocation vector information, and after the idle waiting time of the channel that the first network allocation vector information is carried arrives, sends data to be transmitted to Section Point.
In the present embodiment, sending module 1002 can also message sink module 1003 receive carry the response message of consulting successfully sign after, send first response message to first node, this first response message carries negotiation and successfully indicates and carry the first network allocation vector information that the response message of consulting successfully sign carries.
In the present embodiment, sending module 1002 can also transmit control message once more to Section Point, after message sink module 1003 receives the response message that carries the negotiation failure flags, when channel and time allocation table according to first node, when determining that first node has the idle channel resources corresponding with the second network allocation vector information, this control messages is carried one second network allocation vector information of above-mentioned idle channel resources correspondence.Particularly, when do not comprise in the channel of first node and the time allocation table with the second network allocation vector information in the corresponding record of channel number the time, perhaps, when comprise in the channel of first node and the time allocation table with the second network allocation vector information in the corresponding record of channel number, and the idle waiting time of the channel of this channel number correspondence during the duration, determines that first node has and the corresponding idle channel resources of the second network allocation vector information more than or equal to the residue of this channel occupancy in the above-mentioned record in the second network allocation vector information.
In the present embodiment, it is all occupied that sending module 1002 specifically can be worked as the data channel of first node and Section Point, and the transmitting continuous time of data to be transmitted is less than the idle waiting of all data channels during the time, transmit control message to Section Point, the first network allocation vector information in this control messages comprises the channel number of the control channel between first node and the Section Point, the idle waiting time of this control channel and the data to be transmitted transmitting continuous time on control channel, consult control channel for Section Point according to the first network allocation vector information and first node, wherein, the idle waiting time of this control channel is zero.
In the foregoing description, when first node need be when Section Point sends data, module 1001 is set the first network allocation vector information is set, sending module 1002 transmits control message to Section Point, comprise in this control messages that many are provided with the first network allocation vector information that module 1001 is provided with, the idle channel resources of this first network allocation vector information indication first node.Thereby the Section Point that receives control messages can be according to the channel and the time allocation table of the first network allocation vector information and Section Point, with the first node negotiated channel, and Section Point and first node can shift to an earlier date the reservation data channel according to the idle waiting time of channel in the first network allocation vector information, thereby have improved the service efficiency and the negotiation efficiency of data channel in the wireless network.Further, all occupied when all data channels, and when enough multiplexing time was arranged on time slot, first node can consult to use control channel with Section Point, control channel is multiplexed into data channel temporarily, thereby has increased the whole resource utilization of system.
Figure 11 is the structural representation of an embodiment of channel negotiating system of the present invention, and the channel negotiating system of present embodiment can be realized the flow process that the present invention is embodiment illustrated in fig. 3.As shown in figure 11, this channel negotiating system can comprise: first node 1101 and Section Point 1102.
Particularly, first node 1101 can be provided with the first network allocation vector information according to the channel and the time allocation table of first node 1101, and transmit control message to Section Point 1102, this control messages is carried many first network allocation vector information, this first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on this channel of the channel of channel number, this channel number correspondence, the idle channel resources of this first network allocation vector information indication first node.Particularly, first node 1101 can be realized by Fig. 9 of the present invention or first node embodiment illustrated in fig. 10.
Section Point 1102 can receive the control messages that first node 1101 sends, and the first network allocation vector information of carrying according to this control messages and the channel and the time allocation table of Section Point 1102 are with the first node negotiated channel.Particularly, Section Point 1102 can be realized by Fig. 7 of the present invention or Section Point embodiment illustrated in fig. 8.
In the foregoing description, when first node 1101 need be when Section Point 1102 sends data, first node 1101 transmits control message to Section Point 1102, comprise many first network allocation vector information in this control messages, the idle channel resources of this first network allocation vector information indication first node 1101; The Section Point 1102 that receives control messages can be according to the channel and the time allocation table of the first network allocation vector information and Section Point 1102, with first node 1101 negotiated channel, and Section Point 1102 can shift to an earlier date the reservation data channel according to the idle waiting time of channel in the first network allocation vector information with first node 1101, thereby has improved the service efficiency and the negotiation efficiency of data channel in the wireless network.
The embodiment of the invention provides a kind of channel machinery of consultation, system, first node and Section Point, the method of reservation data channel in advance in the embodiment of the invention, reduced in the wireless network because of introducing the temporal expense that negotiation mechanism causes, to greatest extent negotiation is focused on control channel and before data transmit-receive begins, finish, improved the throughput of network integral body.This method also can be used for carrying out the distributed system resource allocation at other wireless multi-hop network;
Channel in the embodiment of the invention and time allocation table also can be used for carrying out the distributed system resource allocation at other wireless multi-hop networks with Mesh or the networking of Ad hoc mode;
The method that control channel is multiplexed into data channel in the embodiment of the invention also can be used for carrying out the distributed system resource allocation at other wireless multi-hop networks.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.

Claims (22)

1. a channel machinery of consultation is characterized in that, comprising:
Section Point receives the control messages that first node sends, described control messages is carried many first network allocation vector information, the described first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on described channel of the channel of channel number, described channel number correspondence, and the described first network allocation vector information is indicated the idle channel resources of described first node;
According to the channel and the time allocation table of described first network allocation vector information and described Section Point, with described first node negotiated channel.
2. method according to claim 1 is characterized in that, described channel and time allocation table according to described first network allocation vector information and described Section Point comprise with described first node negotiated channel:
When channel and time allocation table according to described Section Point, when determining that described Section Point has the idle channel resources corresponding with the described first network allocation vector information, reply response message to described first node, described response message carries negotiation and successfully indicates one first network allocation vector information with described idle channel resources correspondence; And according to the channel and the time allocation table of the described Section Point of the described first network allocation vector information updating;
When channel and time allocation table according to described Section Point, when determining that described Section Point does not have the idle channel resources corresponding with the described first network allocation vector information, reply response message to described first node, described response message carries consults the failure flags and the second network allocation vector information, and the described second network allocation vector information is indicated the idle channel resources of described Section Point.
3. method according to claim 2 is characterized in that, every record in the channel of described Section Point and the time allocation table comprises the residue duration of the channel number and the described channel occupancy of the channel that described Section Point takies,
Described definite described Section Point has the idle channel resources corresponding with the described first network allocation vector information and comprises:
When do not comprise in the channel of described Section Point and the time allocation table with the described first network allocation vector information in the corresponding record of channel number the time, perhaps, when comprise in the channel of described Section Point and the time allocation table with the described first network allocation vector information in the corresponding record of channel number, and the idle waiting time of the channel of channel number correspondence described in the described first network allocation vector information during duration, determines that described Section Point has and the corresponding idle channel resources of the described first network allocation vector information more than or equal to the residue of channel occupancy described in the described record.
4. method according to claim 2 is characterized in that, also comprises:
The neighbor node of described Section Point receive carry the response message of consulting successful sign after, the neighbor node of described Section Point upgrades the channel and the time allocation table of the neighbor node of described Section Point according to the first network allocation vector information in the described response message.
5. according to claim 2 or 4 described methods, it is characterized in that the step of described renewal channel and time allocation table comprises:
When comprise in described channel and the time allocation table with the described first network allocation vector information in the corresponding record of channel number, and the transmitting continuous time sum on described channel of the idle waiting time of the channel of channel number correspondence and data to be transmitted described in the described first network allocation vector information is greater than the residue of channel occupancy described in the described record during duration, and residue duration of channel occupancy described in the described record is updated to described idle waiting time and described transmitting continuous time sum;
When do not comprise in described channel and the time allocation table with the described first network allocation vector information in the corresponding record of channel number the time, in described channel and time allocation table, add a record, channel number in the record of described interpolation is the channel number in the described first network allocation vector information, and the residue duration of the channel occupancy of the channel number correspondence in the record of described interpolation is the idle waiting time and the transmitting continuous time sum of data to be transmitted on described channel of the channel of channel number correspondence described in the described first network allocation vector information.
6. a channel machinery of consultation is characterized in that, comprising:
Channel and time allocation table according to first node are provided with the first network allocation vector information, the described first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on described channel of the channel of channel number, described channel number correspondence, and the described first network allocation vector information is indicated the idle channel resources of described first node;
Transmit control message to Section Point, described control messages is carried the described first network allocation vector information, for described Section Point according to described first network allocation vector information and described first node negotiated channel.
7. method according to claim 6 is characterized in that, every record in the channel of described first node and the time allocation table comprises the residue duration of the channel number and the described channel occupancy of the channel that described first node takies,
Described channel and time allocation table according to first node is provided with the first network allocation vector information and comprises:
When comprise in the channel of described first node and the time allocation table with the described first network allocation vector information in the corresponding record of channel number the time, the residue duration of the idle waiting time of the channel of channel number correspondence described in the described first network allocation vector information more than or equal to channel occupancy described in the described record is set;
When do not comprise in the channel of described first node and the time allocation table with the described first network allocation vector information in the corresponding record of channel number the time, the idle waiting time that the channel of channel number correspondence described in the described first network allocation vector information is set is zero.
8. method according to claim 6, it is characterized in that, also comprise: receive the response message that described Section Point is replied, described response message carries negotiation and successfully indicates one first network allocation vector information with the idle channel resources correspondence of described Section Point; Perhaps, described response message carries the failure flags and the second network allocation vector information of consulting, the described second network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on described channel of the channel of channel number, described channel number correspondence, and the described second network allocation vector information is indicated the idle channel resources of described Section Point.
9. method according to claim 8, it is characterized in that, receive carry the response message of consulting successfully sign after, described first node carries the first network allocation vector information that the response message of consulting successfully sign carries according to described, upgrade the channel and the time allocation table of described first node, on the channel of the channel number correspondence in the described first network allocation vector information, and after the idle waiting time of the described channel that the described first network allocation vector information is carried arrives, send described data to be transmitted to described Section Point.
10. method according to claim 9 is characterized in that, also comprises:
Described first node sends first response message to described first node, and described first response message carries described negotiation and successfully indicates with described and carry the first network allocation vector information that the response message of consulting successfully sign carries;
The neighbor node of described first node receives after described first response message, according to the channel and the time allocation table of the neighbor node of the described first node of the first network allocation vector information updating in described first response message.
11. method according to claim 8, it is characterized in that, after receiving the response message that carries the negotiation failure flags, described first node transmits control message once more to described Section Point, when channel and time allocation table according to described first node, when determining that described first node has the idle channel resources corresponding with the described second network allocation vector information, described control messages is carried the second network allocation vector information of described idle channel resources correspondence.
12. method according to claim 11 is characterized in that, described definite described first node has the idle channel resources corresponding with the described second network allocation vector information and comprises:
When do not comprise in the channel of described first node and the time allocation table with the described second network allocation vector information in the corresponding record of channel number the time, perhaps, when comprise in the channel of described first node and the time allocation table with the described second network allocation vector information in the corresponding record of channel number, and the idle waiting time of the channel of channel number correspondence described in the described second network allocation vector information during duration, determines that described first node has and the corresponding idle channel resources of the described second network allocation vector information more than or equal to the residue of channel occupancy described in the described record.
13. method according to claim 6, it is characterized in that, describedly transmit control message to Section Point, described control messages is carried the described first network allocation vector information, comprises according to described first network allocation vector information and described first node negotiated channel for described Section Point:
When the data channel of described first node and described Section Point all occupied, and the transmitting continuous time of described data to be transmitted is less than the idle waiting of all data channels during the time, transmit control message to described Section Point, the first network allocation vector information in the described control messages comprises the channel number of the control channel between described first node and the described Section Point, the idle waiting time of described control channel and the described data to be transmitted transmitting continuous time on described control channel, consult control channel for described Section Point according to described first network allocation vector information and described first node, the idle waiting time of described control channel is zero.
14. a Section Point is characterized in that, comprising:
Receiver module, be used to receive the control messages that first node sends, described control messages is carried many first network allocation vector information, the described first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on described channel of the channel of channel number, described channel number correspondence, and the described first network allocation vector information is indicated the idle channel resources of described first node;
Negotiation module is used for according to the first network allocation vector information of described receiver module reception and the channel and the time allocation table of described Section Point, with described first node negotiated channel.
15. Section Point according to claim 14 is characterized in that, described negotiation module comprises:
Judge submodule, be used for channel and time allocation table, judge whether described Section Point has and the corresponding idle channel resources of the described first network allocation vector information according to described Section Point;
The revertant module is used in the judged result of described judgement submodule replying response message to described first node for certainly the time, and described response message carries negotiation and successfully indicates one first network allocation vector information with described idle channel resources correspondence;
Described revertant module also is used in the judged result of described judgement submodule when negating, reply response message to described first node, described response message carries consults the failure flags and the second network allocation vector information, and the described second network allocation vector information is indicated the idle channel resources of described Section Point.
16. Section Point according to claim 15 is characterized in that, also comprises:
Update module is used for consulting the successfully channel and the time allocation table of the described Section Point of the first network allocation vector information updating of the response message of sign according to carrying.
17. Section Point according to claim 16 is characterized in that, described update module comprises:
The record updating submodule, be used for when described channel and time allocation table comprise with the described first network allocation vector information in the corresponding record of channel number, and the transmitting continuous time sum on described channel of the idle waiting time of the channel of channel number correspondence and data to be transmitted described in the described first network allocation vector information is greater than the residue of channel occupancy described in the described record during duration, and residue duration of channel occupancy described in the described record is updated to described idle waiting time and described transmitting continuous time sum;
Record adds submodule, be used for when described channel and time allocation table do not comprise with the described first network allocation vector information in the corresponding record of channel number the time, in described channel and time allocation table, add a record, channel number in the record of described interpolation is the channel number in the described first network allocation vector information, and the residue duration of the channel occupancy of the channel number correspondence in the record of described interpolation is the idle waiting time and the transmitting continuous time sum of data to be transmitted on described channel of the channel of channel number correspondence described in the described first network allocation vector information.
18. a first node is characterized in that, comprising:
Module is set, be used for the first network allocation vector information being set according to the channel and the time allocation table of first node, the described first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on described channel of the channel of channel number, described channel number correspondence, and the described first network allocation vector information is indicated the idle channel resources of described first node;
Sending module is used for transmitting control message to Section Point, and described control messages is carried the described first network allocation vector information that module is provided with that is provided with, for described Section Point according to described first network allocation vector information and described first node negotiated channel.
19. first node according to claim 18 is characterized in that, the described module that is provided with comprises:
First is provided with submodule, be used for when the channel of described first node and time allocation table comprise with the described first network allocation vector information in the corresponding record of channel number the time, the residue duration of the idle waiting time of the channel of channel number correspondence described in the described first network allocation vector information more than or equal to channel occupancy described in the described record is set;
Second is provided with submodule, be used for when the channel of described first node and time allocation table do not comprise with the described first network allocation vector information in the corresponding record of channel number the time, the idle waiting time that the channel of channel number correspondence described in the described first network allocation vector information is set is zero.
20. first node according to claim 18 is characterized in that, also comprises:
The message sink module is used to receive the response message that described Section Point is replied, and described response message carries negotiation and successfully indicates one first network allocation vector information with the idle channel resources correspondence of described Section Point; Perhaps, described response message carries the failure flags and the second network allocation vector information of consulting, the described second network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on described channel of the channel of channel number, described channel number correspondence, and the described second network allocation vector information is indicated the idle channel resources of described Section Point.
21. first node according to claim 20 is characterized in that, also comprises:
First update module, be used for described message sink module receive carry the response message of consulting successfully sign after, carry the first network allocation vector information that the response message of consulting successfully sign carries according to described, upgrade the channel and the time allocation table of described first node;
Described sending module also is used for the channel in the channel number correspondence of the described first network allocation vector information, and after the idle waiting time of the described channel that the described first network allocation vector information is carried arrives, send described data to be transmitted to described Section Point.
22. a channel negotiating system is characterized in that, comprising: first node and Section Point,
Described first node, be used for the first network allocation vector information being set according to the channel and the time allocation table of described first node, and transmit control message to described Section Point, described control messages is carried many first network allocation vector information, the described first network allocation vector information comprises the idle waiting time and the transmitting continuous time of data to be transmitted on described channel of the channel of channel number, described channel number correspondence, and the described first network allocation vector information is indicated the idle channel resources of described first node;
Described Section Point is used to receive the control messages that described first node sends, and the first network allocation vector information of carrying according to described control messages and the channel and the time allocation table of described Section Point are with described first node negotiated channel.
CN 200910093382 2009-09-18 2009-09-18 Method, system and node for channel negotiation Active CN102026297B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200910093382 CN102026297B (en) 2009-09-18 2009-09-18 Method, system and node for channel negotiation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200910093382 CN102026297B (en) 2009-09-18 2009-09-18 Method, system and node for channel negotiation

Publications (2)

Publication Number Publication Date
CN102026297A true CN102026297A (en) 2011-04-20
CN102026297B CN102026297B (en) 2013-11-06

Family

ID=43866998

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200910093382 Active CN102026297B (en) 2009-09-18 2009-09-18 Method, system and node for channel negotiation

Country Status (1)

Country Link
CN (1) CN102026297B (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102892151A (en) * 2012-09-20 2013-01-23 华为技术有限公司 Method, apparatus and system for negotiating channel
WO2013104297A1 (en) * 2012-01-13 2013-07-18 华为技术有限公司 Method, device and system for setting network allocation vector in quiet period
CN104012121A (en) * 2011-10-13 2014-08-27 华为技术有限公司 System and method for data channel transmission and reception
CN104365166A (en) * 2012-09-05 2015-02-18 Sk普兰尼特有限公司 System and method for content providing service and device applied to same
CN105101306A (en) * 2014-05-20 2015-11-25 联想(北京)有限公司 Information processing method and electronic device
WO2017008287A1 (en) * 2015-07-15 2017-01-19 华为技术有限公司 Channel negotiation method, transmission node and receiving node
WO2017063487A1 (en) * 2015-10-13 2017-04-20 Huawei Technologies Co., Ltd. System and Method for Spatial Reuse in Directional Random Access
CN106604322A (en) * 2016-12-03 2017-04-26 浙江大学 Medium access control protocol of underwater wireless sensor network
CN106937307A (en) * 2015-12-31 2017-07-07 哈尔滨海能达科技有限公司 A kind of channel service moving method and device and base station equipment
US9936522B2 (en) 2013-04-24 2018-04-03 Zte Corporation Method, device and computer readable storage medium for processing channel access
CN110784871A (en) * 2018-07-31 2020-02-11 苏州德沃物流科技有限公司 Intelligent logistics information management method and system
CN113965958A (en) * 2020-12-23 2022-01-21 技象科技(浙江)有限公司 Data transmission method, device and system based on multi-information reference and storage medium
CN114006864A (en) * 2020-12-23 2022-02-01 技象科技(浙江)有限公司 Channel scheduling method, device, system and storage medium based on time equalization
CN114337952A (en) * 2020-09-30 2022-04-12 烽火通信科技股份有限公司 Method and system for communication link negotiation
CN114006864B (en) * 2020-12-23 2024-05-03 技象科技(南京)有限公司 Channel scheduling method, device, system and storage medium based on time equalization

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11683788B2 (en) 2011-10-13 2023-06-20 Futurewei Technologies, Inc. System and method for data channel transmission and reception
CN104012121A (en) * 2011-10-13 2014-08-27 华为技术有限公司 System and method for data channel transmission and reception
WO2013104297A1 (en) * 2012-01-13 2013-07-18 华为技术有限公司 Method, device and system for setting network allocation vector in quiet period
CN104365166A (en) * 2012-09-05 2015-02-18 Sk普兰尼特有限公司 System and method for content providing service and device applied to same
CN102892151B (en) * 2012-09-20 2016-05-25 华为技术有限公司 Channel machinery of consultation, equipment and system
WO2014044171A1 (en) * 2012-09-20 2014-03-27 华为技术有限公司 Channel negotiation method, device, and system
US9622115B2 (en) 2012-09-20 2017-04-11 Huawei Technologies Co., Ltd. Channel negotiation method, device, and system
CN102892151A (en) * 2012-09-20 2013-01-23 华为技术有限公司 Method, apparatus and system for negotiating channel
US9936522B2 (en) 2013-04-24 2018-04-03 Zte Corporation Method, device and computer readable storage medium for processing channel access
CN105101306A (en) * 2014-05-20 2015-11-25 联想(北京)有限公司 Information processing method and electronic device
WO2017008287A1 (en) * 2015-07-15 2017-01-19 华为技术有限公司 Channel negotiation method, transmission node and receiving node
WO2017063487A1 (en) * 2015-10-13 2017-04-20 Huawei Technologies Co., Ltd. System and Method for Spatial Reuse in Directional Random Access
US10362586B2 (en) 2015-10-13 2019-07-23 Futurewei Technologies, Inc. System and method for spatial reuse in directional random access
CN106937307A (en) * 2015-12-31 2017-07-07 哈尔滨海能达科技有限公司 A kind of channel service moving method and device and base station equipment
CN106604322A (en) * 2016-12-03 2017-04-26 浙江大学 Medium access control protocol of underwater wireless sensor network
CN106604322B (en) * 2016-12-03 2019-11-15 浙江大学 The media access control protocol of underwater wireless sensor network
CN110784871A (en) * 2018-07-31 2020-02-11 苏州德沃物流科技有限公司 Intelligent logistics information management method and system
CN114337952A (en) * 2020-09-30 2022-04-12 烽火通信科技股份有限公司 Method and system for communication link negotiation
CN114337952B (en) * 2020-09-30 2023-06-09 烽火通信科技股份有限公司 Method and system for negotiating communication link
CN113965958A (en) * 2020-12-23 2022-01-21 技象科技(浙江)有限公司 Data transmission method, device and system based on multi-information reference and storage medium
CN114006864A (en) * 2020-12-23 2022-02-01 技象科技(浙江)有限公司 Channel scheduling method, device, system and storage medium based on time equalization
CN114006864B (en) * 2020-12-23 2024-05-03 技象科技(南京)有限公司 Channel scheduling method, device, system and storage medium based on time equalization

Also Published As

Publication number Publication date
CN102026297B (en) 2013-11-06

Similar Documents

Publication Publication Date Title
CN102026297B (en) Method, system and node for channel negotiation
CN101971689B (en) Methods and apparatus for using multiple connection identifiers based on traffic requirements
AU2007270867B2 (en) QoS request and information distribution for wireless relay networks
KR101219489B1 (en) Methods and apparatus for using connection identifiers having different priorities at different times
JP2006246002A (en) Host station in multi-hop cellular system, and wireless resource reuse method thereof
CN102308656B (en) Methods and systems for user selection in wireless communication networks
CN101164255A (en) Reducing beacon slot acquisition time in a distributed media access control network
US8340053B2 (en) Wireless sensor network and method for performing communication therein
EP3177095B1 (en) Methods and apparatus for requesting and allocating resources in multiple transmission opportunities
JP2012095273A (en) Communication method and node used for wireless communication network
CN102264116B (en) Node network access method based on distributed time division multiple access wireless ad hoc network
US20070081485A1 (en) Method,station and computer programme for accessing radio resources in and ad-hoc radio communication system
CN101267240A (en) Multi-hop wireless relay communication system and download data transmission method and device
CN106793128A (en) A kind of channel wireless radio multi Mesh network TDMA resource allocation methods
WO2013152649A1 (en) Method and device for determining resource collision
CN104247542A (en) Communication control device, communication control method, control method, communication control program, and recording medium
EP2174453B1 (en) Method of managing transmission within a wireless communications network
CN102308648B (en) Method and system for competing between management node in wireless communication system
CN110933758B (en) Interference coordination method and device, and base station
CN108495369A (en) A kind of method of channel management and device
CN103178943A (en) Method, device and system for link adaption
CN101491134A (en) Methods and apparatus for transitioning between states
CN102883344B (en) Method and device for exchanging of wireless network management messages
CN101729227A (en) Method for defining terminal response time, device and system
CN100429958C (en) Bandwidth reserved media access control method for private wireless network

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant