CN101455034A - Wireless network system and method for transmitting/receiving data under the wireless network - Google Patents
Wireless network system and method for transmitting/receiving data under the wireless network Download PDFInfo
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- CN101455034A CN101455034A CNA2007800199954A CN200780019995A CN101455034A CN 101455034 A CN101455034 A CN 101455034A CN A2007800199954 A CNA2007800199954 A CN A2007800199954A CN 200780019995 A CN200780019995 A CN 200780019995A CN 101455034 A CN101455034 A CN 101455034A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
A wireless network system and a method of transmitting/receiving data over a wireless network, and more particularly, for transmitting/receiving data over a wireless network capable of allowing a station that has not received a beacon frame or has received a damaged beacon frame among stations performing wireless communication in a high-frequency band to acquire schedule information in a super frame. A wireless network coordinator according to an exemplary embodiment of the invention includes: a media access control (MAC) unit that generates a beacon frame for forming a super frame including one or more channel time blocks; a band managing unit that allows a station on a network to set a specific channel time block among the channel time blocks to a period in which a packet including a predetermined control command is transmitted or received; and a transmitting unit that transmits the beacon frame including information on the setting through a predetermined communication channel.
Description
Technical field
Method and apparatus according to the invention relates to a kind of Radio Network System and the method for transmission/reception data on wireless network, more particularly, relate to a kind of Radio Network System as described below and on wireless network the method for transmission/reception data, described Radio Network System and method can allow not receive beacon frame in high frequency band is carried out the website of radio communication or receive schedule information in the station for acquiring superframe of beacon frame of damage.
Background technology
Fig. 1 illustrates the diagrammatic sketch that sends the half-duplex wireless network of (RTS) signal and clear to send (CTS) signal according to the use request of prior art.
Usually, wireless network uses and can not carry out the half-duplex mode that data send and receive simultaneously.When wireless network used half-duplex mode to visit wireless medium, RTS signal 111 and cts signal 121 were used to prevent the conflict to the calling-on signal of medium.
At first, have the transmission website 110 transmission RTS signals 111 of the frame that will be sent out with the beginning process of transmitting.Then, all peripheral websites that received RTS signal 111 stop to produce radio wave.When receiving station 120 received RTS signal 111, receiving station 120 sent cts signal 121 in response.Cts signal 121 prevents that also all peripheral websites from producing radio wave.The transmission website 110 that has received cts signal 121 sends to receiving station 120 with frame 112.Then, receiving station 120 sends to confirmation signal 122 in response and sends website 110, sends website 110 and receives this confirmation signal 122.
Distributed coordination function (DCF) provides the Carrier Sense Multiple Access/conflict of media interviews control (MAC) algorithm that is used in usually in WLAN (wireless local area network) (LAN) environment to avoid (CSMA/CA).Distributed coordination function checked before sending website 110 transmit frames 120 whether wireless link is idle, and used to keep out of the way preventing in the end point of each frame 112 and conflict mutually with other websites, and this point is similar to Ethernet.
Carrier sense is used to determine whether medium is available, and is divided into physical carrier listening functions and virtual carrier sensing in wireless network communication function.Provide the physical carrier listening functions in physical layer, the physical carrier listening functions depends on the medium and the modulation system of use.Network allocation vector (NAV) provide virtual carrier sensing in wireless network communication, and it is the timer of the temporal information when indicating medium to be retained.Network allocation vector is included in the frame head of each signal in RTS signal 111 and the cts signal 121, is sent out then.Send website 110 and receiving station 120 and finish its required time of operation and be set to network allocation vector, thereby prevent other website working mediums.
Simultaneously, timing is based on the superframe in wireless personal local area network (PAN) environment.
Fig. 2 is the diagrammatic sketch that illustrates according to the superframe of prior art.As shown in Figure 2, superframe 200 comprises beacon time period 210, contention access time period 220 and channel time allocation time period 230 in order.For example, asynchronous data or control command were sent out or receive in the contention access time period 220.The channel allocation time period 230 comprises channel time allocation (CTA) 232 and management CTA (MCTA) 231.For example, send or receive control command, synchrodata or asynchronous data by CTA232.
The length of contention access time period 220 depends on accessing points, and the contention access time period 220 is sent to the website that adds network by the beacon frame that is distributed in the beacon time period 210.
CSMA/CA is used as the media access method of contention access time period 220.On the other hand, the channel time allocation time period 230 is used time-division multiple access (TDMA) (TDMA) system that the special time window is provided for each website.All accessing points are the devices allocation channel time of request medium access, and send data or receive data from respective site to respective site in this time period.MCTA231 is assigned to a pair of website of wanting to send/receive data, and is used as the CTA that shares of visit tdma system or use time slot aloha agreement.
Frequency band by several gigahertzs (GHz) sends the method for data of compression and the method that the frequency band by tens gigahertzs sends unpressed data has been used to send data.Because the size of unpressed data is more a lot of greatly than the data of compression, so only send unpressed data by tens gigahertz frequency band.In addition, even losing of bag occur during sending, the output of packed data is not little than the influence that the output of compressing data is subjected to yet.
In radio communication, beacon frame comprises the schedule information about the accesses network medium.That is to say that the website on the network can be checked the layout of contention access time period and channel time allocation time period by beacon frame, and access medium or suspend visit to medium.
Disclosure of an invention
Technical problem
Simultaneously, because the problem in the network or the problem of website self, website may not receive beacon frame or may receive the beacon frame that damages.In this case, because the schedule information of network is not provided for website, so corresponding superframe finishes, this makes that before website received beacon frame, website was difficult to access medium.As a result, postponed the transmission of the data of respective site, this feasible frequency band of distributing to the superframe of website is not used, and causes the medium waste.
Therefore, need a kind of technology of schedule information of station for acquiring network that does not receive beacon frame or received the beacon frame of damage that makes.
Technical scheme
An aspect of of the present present invention is to provide a kind of technology that does not receive beacon frame or received the schedule information in the station for acquiring superframe of beacon frame of damage in high frequency band is carried out the website of radio communication that makes.
Each side of the present invention is not limited to top description, will obviously understand other aspects of the present invention by following description those skilled in the art.
According to an aspect of the present invention, provide a kind of wireless network coordinator, having comprised: media interviews control (MAC) unit produces the beacon frame that is used to form the superframe that comprises one or more channel time blocks; The frequency band administrative unit, the particular channel time block in the website channel time blocks on the permission network is set to send or receive the time period of the bag that comprises specific control command; Transmitting element sends the beacon frame that comprises about the information of described setting by specific communication channel.
According to a further aspect in the invention, provide a kind of website, having comprised: determining unit determines whether to receive beacon frame; Media interviews control (MAC) unit, according to determining that the result produces the bag that comprises first order, described first order is used to ask to have the schedule information of the superframe of the beacon frame that sends to the MAC unit; Transmitting element sends the bag that comprises first order by the particular channel time block that is included in the one or more channel time blocks in the superframe, and receives the bag that comprise second order of conduct to the response of the bag of transmission, and described second order is used to notify schedule information.
According to a further aspect in the invention, provide a kind of method of configuration network, described method comprises: produce the beacon frame that is used to form the superframe that comprises one or more channel time blocks; Particular channel time block in the website channel time blocks on the permission network is set to send or receive the time period of the bag that comprises specific control command; Send the beacon frame that comprises about the information of described setting by specific communication channel.
According to a further aspect in the invention, provide the method for a kind of transmission/reception data, described method comprises: determine whether to receive beacon frame; According to determining that the result produces the bag that comprises first order, described first order is used to ask to have the schedule information of superframe of the beacon frame of transmission; Send the bag that comprises first order by the particular channel time block that is included in the one or more channel time blocks in the superframe; Receive the bag that comprise second order of conduct to the response of the bag of transmission, described second order is used to notify schedule information.
The detailed information of other exemplary embodiment of the present invention is included in the detailed description of the present invention and accompanying drawing.
Description of drawings
By the detailed description of reference accompanying drawing to exemplary embodiment of the present, above-mentioned and other features of the present invention and aspect will be clearer, wherein:
Fig. 1 illustrates the diagrammatic sketch that sends the half-duplex wireless network of (RTS) signal and clear to send (CTS) signal according to the use request of prior art;
Fig. 2 is the diagrammatic sketch that illustrates according to the superframe of prior art;
Fig. 3 illustrates the diagrammatic sketch of Radio Network System according to an exemplary embodiment of the present invention;
Fig. 4 illustrates the diagrammatic sketch of communication layers according to an exemplary embodiment of the present invention;
Fig. 5 illustrates the diagrammatic sketch of superframe according to an exemplary embodiment of the present invention;
Fig. 6 illustrates the diagrammatic sketch of control command according to an exemplary embodiment of the present invention;
Fig. 7 illustrates the diagrammatic sketch of schedule information according to an exemplary embodiment of the present invention;
Fig. 8 illustrates the block diagram of wireless network coordinator according to an exemplary embodiment of the present invention;
Fig. 9 illustrates the block diagram of website according to an exemplary embodiment of the present invention;
Figure 10 illustrates the flow chart of the operation of wireless network coordinator according to an exemplary embodiment of the present invention;
Figure 11 illustrates the flow chart of the data transmission/reception of website according to an exemplary embodiment of the present invention.
Embodiment
By with reference to following detailed description, can more be expressly understood many aspects of the present invention and characteristics and realize method of the present invention exemplary embodiment and accompanying drawing.Yet, can realize the present invention in a variety of forms, should not be construed and be limited to here the exemplary embodiment of setting forth.On the contrary, provide these exemplary embodiments so that disclosure complete sum is thorough, and pass on design of the present invention to those skilled in the art comprehensively, the present invention only is defined by the claims.Run through specification, the identical identical parts of label indication.
Now with reference to the accompanying drawing that exemplary embodiment of the present is shown the present invention is described more fully.
Fig. 3 illustrates the diagrammatic sketch of Radio Network System according to an exemplary embodiment of the present invention.Described Radio Network System comprises wireless network coordinator 310 and wireless network stations 321,322,323 and 324.
Wireless network coordinator 310 sends beacon frames to regulate the wireless network stations 321,322,323 that is provided with in the wireless network and 324 bandwidth assignment.That is to say, the wireless network stations 321,322,323 of one or more formation wireless networks and 324 can be waited for reference to the beacon frame that receives and receive the frequency band that distributes, perhaps when having distributed frequency band for a wireless network stations, this wireless network stations can send to another wireless network stations with data by the frequency band that distributes.
Dispose network according to an exemplary embodiment of the present invention according to the superframe that comprises one or more channel time blocks.The channel time blocks that channel time blocks is classified as the channel time blocks of reservation and does not reserve, the channel time blocks of described reservation is the time period for the reservation of the ad hoc wireless networks website allocated frequency band on the network, and the described channel time blocks of not reserving is the time period for a wireless network stations allocated frequency band of selecting from the wireless network stations on the network by competition.
Channel time blocks is meant the set time section that sends data in network in the wireless network stations that is provided with, and the channel time blocks of reservation and the channel time blocks of not reserving correspond respectively to channel time allocation time period and contention access time period.
A wireless network stations with the data that will be sent out can be competed to send data in the channel time blocks of not reserving with another wireless network stations, and perhaps this wireless network stations can send data in the channel time blocks of the reservation that distributes.That is to say that each wireless site on the network is with reference to the distribution that is included in the schedule information inspection frequency band in the beacon frame, and transmission/reception data.
Can in a superframe, comprise one or more channel time blocks of not reserving.In described one or more channel time blocks of not reserving, the not channel time blocks of reservation that can be specific is set to send or receive the time period (below, be called the control command time period) of the bag that comprises control command (below, be known as the control command bag).Described control command comprise request about be included in the superframe one or more scheduling time section schedule information information request command and produce and comprise information response's order of schedule information in response to information request command by wireless network coordinator 310, described information request command is produced by a wireless network stations that does not receive beacon frame on the network or received the beacon frame of damage.
Therefore, because the wireless network stations that the problem of the problem of network or wireless network stations self does not receive beacon frame or received the beacon frame of damage also can obtain schedule information, channel time blocks (not invading the channel time blocks of the reservation that distributes for another wireless network stations) by the reservation that distributes sends data, perhaps sends data with other wireless network stations competition ground in the channel time blocks of not reserving.
The control command time period can tightly be arranged in beacon after the time period, and fixedly position and the size of control command time period.Therefore, the wireless network stations that does not receive beacon frame or received the beacon frame of damage can obtain the schedule information about whole superframe.
Fig. 4 illustrates the diagrammatic sketch of communication layers according to an exemplary embodiment of the present invention.
Usually, communication layers 400 comprises channel layer 440, the physical layer 430 that comprises radio frequency (RF) layer 432 and baseband layer 431, media interviews controls (MAC) layer 420 and the upper strata 410 of bottom that has the physical medium of the special frequency band that sends radio signal as expression.The upper strata 410 that is arranged on the MAC layer 420 can comprise logic link control (LLC) layer, network layer, transport layer and application layer.
Wireless channel can comprise the low-frequency band of high frequency band and 2.4GHz or the 5GHz of 60GHz according to an exemplary embodiment of the present invention.Therefore, channel layer 440 can be carried out directional communication and one-way communication.
Fig. 5 illustrates the diagrammatic sketch of superframe according to an exemplary embodiment of the present invention.Superframe 500 comprises beacon time period, the channel time blocks of not reserving 521,522,523,524 and 525 and the channel time blocks 531,532,533,534,535 and 536 reserved.
During the beacon time period, distribute beacon frame 511 by wireless network coordinator.Therefore, the wireless network stations that has received beacon frame 511 can be known the distribution state of frequency band on the network based on being included in schedule information in the beacon frame 511.
Two or more wireless network stations of wanting to send data are vied each other in the channel time blocks of not reserving 521,522,523,524 and 525, have only the frequency band that selecteed wireless network stations can pass through to distribute by competition to send data.
In the channel time blocks of reserving 531,532,533,534,535 and 536 is ad hoc wireless networks website allocated frequency band, has only the ad hoc wireless networks website that receives this frequency band to send data by the frequency band that distributes.
As shown in Figure 5, superframe 500 can comprise one or more channel time blocks of not reserving 521,522,523,524 and 525 and the channel time blocks 531,532,533,534,535 and 536 of one or more reservations.In these channel time blocks, the specific channel time blocks of not reserving 521 can be set to the control command time period.
That is to say, in the wireless network stations on network, the wireless network stations that does not receive beacon frame 511 or received the beacon frame of damage sends the bag that comprises information request command in control command in the time period, the wireless network coordinator that has received this bag comprises the bag of information response's order in response to packet generation that comprises information request command and distribution.Then, the described wireless network stations that does not receive beacon frame 511 or received the beacon frame of damage can obtain schedule information before next beacon frame 512 in distribution.
Because information response's order comprises the schedule information of corresponding superframe, so the described wireless network stations that does not receive beacon frame 511 or received the beacon frame of damage also can utilize the channel time blocks of superframe on the basis of the schedule information of obtaining by information response's order.
Simultaneously, the control command time period is the channel time blocks of not reserving, and wireless network stations is vied each other to send bag in the control command time period.In this case, can send/receive bag by Carrier Sense Multiple Access/method for collision avoidance or time slot aloha method.
As shown in Figure 5, data (such as multi-medium data) with big size can be sent out by the fast frequency channel, but have little size data (such as comprise beacon frame 511 and 512 and the bag of control command) can be sent out by the frequency channels of low speed.In this case, the fast frequency channel can comprise the frequency band of 60GHz, and the low speed frequency channels can comprise the frequency band of 2.4GHz or 5GHz.The fast frequency channel can be an one-way channel, and the low speed frequency channels can be an omnidirectional channel.As selection, fast frequency channel and low speed frequency channels can be two-way channels.In this case, wireless network coordinator 310 and wireless network stations 321,322,323 and 324 all can have two PHY layers being responsible for two channels.
Fig. 6 illustrates the diagrammatic sketch of control command according to an exemplary embodiment of the present invention.As shown in Figure 6, control command 600 comprises identifier field 610, size field 620, spare fields 630 and data field 640.
Produce information request command by wireless network stations, the wireless network stations that does not receive beacon frame or received the beacon frame of damage produces the bag that comprises information request command, and sends this bag in the time period in control command.Then, wireless network coordinator comprises information response's order of schedule information in response to the packet generation that receives, and sends the bag that comprises information response's order.Schedule information can be included in the data field 640 of information response's order, and the size of data field 640 can change.When control command was information request command, data field 640 can not be included in the information request command.
Fig. 7 illustrates the diagrammatic sketch of schedule information according to an exemplary embodiment of the present invention.Schedule information 700 can comprise index field 710, size field 720 and one or more Scheduling Block 730.
The indication corresponding information is that the sign or the unique identifier of schedule information specified in index field 710, and total size of Scheduling Block is specified in size field 720.
The identifier of indicating corresponding Scheduling Block whether to be used for static scheduling is specified in static indication field 751.For example, the scheduling of the channel time blocks of the special time existence in the special time period of static indication field 751 indications in superframe.When corresponding Scheduling Block was used for static scheduling, value 1 can be imported into static indication field 751.On the other hand, when corresponding Scheduling Block was used for dynamic dispatching, value 0 can be imported into static indication field 751.
Show the identifier of the transmission wireless network stations that allows for a channel time blocks allocated frequency band in the superframe at source field 752 middle finger definitenesses.
Show the identifier that receives wireless network stations at destination field 753 middle finger definitenesses, described reception wireless network stations receives corresponding data by the channel time blocks that is allowed to allocated frequency band from the transmission wireless network stations that sends data.
The stream index of specifying wireless network coordinator to distribute in stream index field 754, described stream index indication is assigned with the type with the data that are received or send in channel time blocks.For example, when the wireless network stations request produces synchronous flow, can in stream index field 754, specify unappropriated stream index.In this case, stream index can be the value that is limited by wireless network stations.Simultaneously, when the wireless network stations request was reserved or removed the asynchronous channel time block, stream index can be set to asynchronous stream value.
In addition, stream index can be set to ask to revise or remove the value of existing scheduling.That is to say that stream index can be set to be used to reserve the value of frequency band.When the value that is used for reserving frequency band when stream index field 754 is designated, corresponding bag can represent to ask the bag of allocated frequency band.
In beginning offset field 755, specify time started with Scheduling Block section of corresponding scheduling time.
In time block duration field 756, specify the gap between the channel time blocks that is included in the scheduling time section.
In scheduling time section field 757, specify the time interval between two continuous channel time blocks that are included in the scheduling time section.
In the number field 758 of time block, specify the number that is included in the channel time blocks in the scheduling time section.
Fig. 8 illustrates the block diagram of wireless network coordinator according to an exemplary embodiment of the present invention.As shown in Figure 8, wireless network coordinator 800 comprises CPU 810, memory 820, MAC unit 840, frequency band administrative unit 850 and PHY unit 860.
In this case, frequency band administrative unit 850 can tightly be arranged in the control command time period back of the beacon time period that sends beacon frame.
PHY unit 860 is converted to wireless signal with the beacon frame that MAC unit 840 produces, and then this wireless signal is sent by specific communication channel.In order to carry out this operation, PHY unit 860 comprises baseband processor 861 and RF unit 862, and is connected to antenna 870.Antenna 870 can send or receive directed wireless signal at high frequency band.The communication channel that RF unit 862 forms comprises the communication channel with 60GHz frequency band.
Control command comprise request about be included in the superframe one or more scheduling time section information request command and information response's order of schedule information, described information request command is produced by the wireless network stations that does not receive beacon frame on the network or received the beacon frame of damage, and described information response command response is produced in information request command and comprises schedule information.Information response's order can be produced by MAC unit 840.
Fig. 9 illustrates the block diagram of wireless network stations according to an exemplary embodiment of the present invention.As shown in Figure 9, wireless network stations 900 comprises CPU 910, memory 920, MAC unit 940, determining unit 950 and PHY unit 960.
CPU 910 is operatively connected to the miscellaneous part of bus 930, and is responsible for the function on upper strata shown in Figure 4.Therefore, CPU element 910 is provided by the reception data (receiving the MSDU:MAC service data unit) that provide from MAC unit 940, or produces transmission data (sending MSDU), and data are offered MAC unit 940.
Memory 920 has the function of storage data.Memory 920 be can I/O information module, such as hard disk, CD, flash memory, compact flash (CF) card, secure digital (SD) card, smart media (SM) card, multimedia card (MMC) or memory stick.Memory 920 can be arranged in the wireless network coordinator 900 or be set in the independent equipment.
MAC unit 940 adds the MAC head to provide from CPU 910 MSDU (that is to say, with the data that are sent out), thereby produces MPDU (Medium Access Control (MAC) Protocol Data Unit).
PHY unit 960 is converted to wireless signal with the MPDU that MAC unit 940 produces, and then this wireless signal is sent by communication channel.In order to carry out this operation, PHY unit 960 comprises baseband processor 961 and RF unit 962, and is connected to antenna 970.Antenna 970 can send or receive directed wireless signal at high frequency band.
Baseband processor 961 receives the MPDU that is produced by MAC unit 940, and with signal field and the leading MPDU that adds to produce PPDU.Then, RF unit 962 is converted to wireless signal with the PPDU that produces, and sends this wireless signal by antenna 970 then.
Wireless network stations 900 can be assigned with the frequency band of the channel time blocks that is included in the reservation in the superframe to carry out the function that sends website, perhaps can compete with other wireless network stations in the channel time blocks of not reserving.In this case, wireless network stations 900 can send data with reference to the channel time blocks of the reservation of the schedule information of the superframe frequency band by having distribution, perhaps can be in the channel time blocks of not reserving with other wireless network stations competitions to send data.As selection, wireless network stations 900 can suspend data and send in the channel time blocks of the reservation with frequency band that another wireless site distributes.
Can come receiving scheduling information by beacon frame, determining unit 950 determines whether to receive beacon frame.Specify after a while the time started of the beacon frame that will send in beacon frame, determining unit 950 determines whether to receive beacon frame with reference to the previous beacon frame that receives.In order to carry out this operation, the previous beacon frame that receives of memory 920 storages.
Then, the result who determines is sent to MAC unit 940, and MAC unit 940 produces the bag (below, be called information request) of the information request command of the schedule information that comprises the superframe that is used to ask to have the beacon frame that sends to MAC unit 940.Because described information request command above in detail, will omit its detailed description.
The information request that produces is sent to PHY unit 960, and PHY unit 960 sends the information request that receives.That is to say that PHY unit 960 sends information request, thereby wireless network coordinator 800 receives this bag.In order to carry out this operation, can in the destination field (not shown) of information request, insert the address of wireless network coordinator 800, perhaps can insert broadcast address therein.
When receiving information request, wireless network coordinator 800 produces the bag (below, be called information response's bag) of the information response's order that is used to comprise schedule information, and sends this bag.
Then, PHY unit 960 receives information response's bag, and the information response's bag that receives is sent to MAC unit 940.Then, MAC unit 940 can use the frequency band of network with reference to being included in schedule information in the information response bag.
Simultaneously, when inserting broadcast address in destination field 753, other wireless network stations on the network are the accessible information request package also, and this makes PHY unit 960 to receive information response's bag from other wireless network stations.
The control command that can tightly arrange after the time period at the beacon of superframe sends or receives information request and information response's bag in the time period.Because the control command time period is the channel time blocks of not reserving, so PHY unit 960 is competed to send information request with other wireless network stations.
The MAC unit 940 of wireless network stations 900 produces data by above-mentioned processing.The communication channel that is used for PHY unit 960 can comprise the communication channel of 60GHz frequency band, can be unpressed data with the data that are sent out.
In the wireless network stations that is provided with in network, the wireless network stations that is provided with frequency band administrative unit 850 can be carried out the function of wireless network coordinator 800.That is to say that wireless network stations can produce beacon frame, and the distribution beacon frame, thereby other wireless network stations on network provide schedule information.
Figure 10 illustrates the flow chart of the operation of wireless network coordinator according to an exemplary embodiment of the present invention.
The MAC unit 840 of wireless network coordinator 800 produces the beacon frame (S1010) that forms the superframe that comprises one or more channel time blocks.Described beacon frame comprises schedule information, and described schedule information is the information about the frequency band that distributes for the wireless network stations on the network.
Frequency band administrative unit 850 allows time period (control command time period) that the particular channel time block of wireless network stations in the channel time blocks of superframe on the networks be set to send or receive the bag that comprises specific control command (S1020).In this case, control command can comprise information request and information response's bag.
Then, PHY unit 860 sends the beacon frame (S1030) that produces by specific communication channel.
In the wireless network stations on network, the wireless network stations that does not receive beacon frame or received the beacon frame of damage sends information request, to obtain the schedule information that is included in the beacon frame, PHY unit 860 receives information request (S1040).In this case, in the channel time blocks of not reserving (control command time period) of superframe, send information request, and the channel time blocks of not reserving can tightly be arranged in the beacon of superframe after the time period.
When receiving information request, MAC unit 840 is in response to information request packet generation information response bag (S1050).In this case, information response's bag can comprise schedule information.
In time period, the information response of generation bag is sent to corresponding wireless network stations (S1060) in the control command of superframe, thereby this corresponding wireless network stations can utilize network based on schedule information.
Figure 11 is the flow chart that illustrates according to an exemplary embodiment of the present invention by wireless network stations transmission/reception data.
The wireless network stations of wanting to send data 900 can send data by the channel time blocks of reserving based on the schedule information that is included in the beacon frame, perhaps sends data with other wireless network stations competitions with the channel time blocks by not reservation.In this case, can carry out this operation based on the schedule information in the superframe.
Therefore, the wireless network stations 900 that does not receive beacon frame or received the beacon frame of damage should attempt obtaining schedule information.In order to obtain described schedule information, at first, wireless network stations 900 order unit 950 really determines whether to receive beacon frame (S1110), and the result that will determine sends to MAC unit 940.When not receiving beacon frame, MAC unit 940 produces information request (S1120).
Then, PHY unit 960 sends information request (S1130) in the control command time period, and receives the information response bag (S1140) of conduct to the response of the information request of transmission.Because the control command time period is the channel time blocks of not reserving, so PHY unit 960 is competed to send information request with other wireless network stations.
Simultaneously, information response's bag is sent to MAC unit 940, thereby MAC unit 940 can send data (S1150) based on the schedule information that is included in information response's bag.
Although described the present invention in conjunction with exemplary embodiment of the present invention,, it should be appreciated by those skilled in the art, under situation about not departing from the scope of the present invention with spirit, can carry out various modifications and change to the present invention.Therefore, should be appreciated that above-mentioned exemplary embodiment is not restrictive, but all be exemplary in all respects.
Utilizability on the industry
As mentioned above, according to Radio Network System of the present invention and on wireless network sending/receiving data Method is carried out in the wireless network website of radio communication at high frequency band, does not receive beacon frame or The wireless network website of the beacon frame through receiving damage can obtain the schedule information of superframe, and this can prevent Send the delay of data and the service efficiency of raising superframe.
Claims (58)
1, a kind of wireless network coordinator comprises:
Media interviews control MAC unit produces the beacon frame that is used to form the superframe that comprises one or more channel time blocks;
The frequency band administrative unit, the particular channel time block in the website channel time blocks on the permission network is set to send or receive the time period of the bag that comprises specific control command;
Transmitting element sends the beacon frame that comprises about the information that is provided with by specific communication channel.
2, wireless network coordinator as claimed in claim 1, wherein, the particular channel time block tightly is arranged in the beacon of transmission beacon frame after the time period in superframe.
3, wireless network coordinator as claimed in claim 2, wherein, the particular channel time block with specific size is positioned at beacon after the time period in superframe.
4, wireless network coordinator as claimed in claim 1, wherein, control command comprises:
Information request command, be used for asking about be included in superframe one or more scheduling time section schedule information;
Information response's order produces in response to described information request command and comprises schedule information.
5, wireless network coordinator as claimed in claim 4, wherein, information request command comprises at least one in identifier field, size field and the spare fields, wherein, described identifier field indication control command is an information request command, the size of described size field indication information request command, described spare fields are the fields of distributing for the various operations on the network.
6, wireless network coordinator as claimed in claim 4, wherein, information request command comprises at least one in identifier field, size field, spare fields and the data field, wherein, described identifier field indication control command is information response's order, the size of described size field indication information response command, described spare fields are the fields of distributing for the various operations on the network, in described data field middle finger degree of setting the tone information.
7, wireless network coordinator as claimed in claim 4, wherein, schedule information comprises:
Index field, the indication corresponding information is a schedule information;
Size field, the size of indication schedule information;
One or more Scheduling Blocks.
8, wireless network coordinator as claimed in claim 7, wherein, described Scheduling Block comprises:
Static indication field, whether the indication Scheduling Block is used for static scheduling;
Source field, it is the transmission website of a channel time blocks allocated frequency band that indication is allowed to;
Destination field, indication is from sending website receives data by the channel time blocks of having distributed frequency band receiving station;
Stream index field, the designation data type;
The beginning offset field, the time started of indication and corresponding particular schedule time period of Scheduling Block;
Time block duration field, indication is included in the gap between the channel time blocks of particular schedule in the time period;
Scheduling time the section field, indication is included in the interval between time started of two continuous channel time blocks of particular schedule in the time period;
The number field of time block, indication is included in the number of the channel time blocks of particular schedule in the time period.
9, wireless network coordinator as claimed in claim 1, wherein, channel time blocks is the time period that sends or receive data in the website on the network.
10, wireless network coordinator as claimed in claim 9, wherein, data comprise unpressed data.
11, wireless network coordinator as claimed in claim 1, wherein, channel time blocks comprises:
The channel time blocks of reserving is the time period for the reservation of the particular station allocated frequency band on the network;
The channel time blocks of Yu Liuing not is the time period for a website allocated frequency band of selecting by competition on the network.
12, wireless network coordinator as claimed in claim 11, wherein, the particular channel time block is the channel time blocks of not reserving.
13, wireless network coordinator as claimed in claim 1 wherein, sends or receives the bag that comprises control command by Carrier Sense Multiple Access/method for collision avoidance or time slot aloha method.
14, wireless network coordinator as claimed in claim 1, wherein, communication channel comprises the communication channel of 60GHz frequency band.
15, a kind of website comprises:
Determining unit determines whether to receive beacon frame;
Media interviews control MAC unit, according to determining that the result produces the bag that comprises first order, described first order is used to ask to have the schedule information of the superframe of the beacon frame that sends to the MAC unit;
Transmitting element sends the bag that comprises first order by the particular channel time block that is included in the one or more channel time blocks in the superframe, and receives the bag that comprise second order of conduct to the response of the bag of transmission, and described second order is used to notify schedule information.
16, website as claimed in claim 15, wherein, the particular channel time block tightly is arranged in the beacon of transmission beacon frame after the time period in superframe.
17, website as claimed in claim 16, wherein, the particular channel time block with specific size is positioned at beacon after the time period in superframe.
18, website as claimed in claim 15, wherein, channel time blocks is the time period that sends or receive data in the website on network.
19, website as claimed in claim 15, wherein, described data comprise unpressed data.
20, website as claimed in claim 15, wherein, channel time blocks comprises:
The channel time blocks of reserving is the time period for the reservation of the particular station allocated frequency band on the network;
The channel time blocks of Yu Liuing not is the time period for a website allocated frequency band of selecting by competition on the network.
21, website as claimed in claim 20, wherein, the particular channel time block is the channel time blocks of not reserving.
22, website as claimed in claim 15, wherein, first order comprises at least one in identifier field, size field and the spare fields, wherein, described identifier field indication the corresponding command is first order, the size of described size field indication first order, described spare fields is the field of distributing for the various operations on the network.
23, website as claimed in claim 15, wherein, second order comprises at least one in identifier field, size field, spare fields and the data field, wherein, described identifier field indication the corresponding command is second order, the size of described size field indication second order, described spare fields is the field of distributing for the various operations on the network, in described data field middle finger degree of setting the tone information.
24, website as claimed in claim 15, wherein, schedule information comprises:
Index field, the indication corresponding information is a schedule information;
Size field, the size of indication schedule information;
One or more Scheduling Blocks.
25, website as claimed in claim 24, wherein, described Scheduling Block comprises:
Static indication field, whether the indication Scheduling Block is used for static scheduling;
Source field, it is the transmission website of a channel time blocks allocated frequency band that indication is allowed to;
Destination field, indication is from sending website receives data by the channel time blocks of having distributed frequency band receiving station;
Stream index field, the designation data type;
The beginning offset field, the time started of indication and corresponding particular schedule time period of Scheduling Block;
Time block duration field, indication is included in the gap between the channel time blocks of particular schedule in the time period;
Scheduling time the section field, indication is included in the interval between time started of two continuous channel time blocks of particular schedule in the time period;
The number field of time block, indication is included in the number of the channel time blocks of particular schedule in the time period.
26, website as claimed in claim 15 wherein, sends or receives the bag that comprises first order and comprise second bag of ordering by Carrier Sense Multiple Access/method for collision avoidance or time slot aloha method.
27, website as claimed in claim 15, wherein, communication channel comprises the communication channel of 60GHz frequency band.
28, website as claimed in claim 15, wherein, transmitting element receives the bag that comprises second order according to the destination address of the bag that comprises first order from another website on wireless network coordinator or the network.
29, a kind of method of configuration network, described method comprises:
Generation is used to form the beacon frame of the superframe that comprises one or more channel time blocks;
Particular channel time block in the website channel time blocks on the permission network is set to send or receive the time period of the bag that comprises specific control command;
Send the beacon frame that comprises about the information that is provided with by specific communication channel.
30, method as claimed in claim 29, wherein, the particular channel time block tightly is arranged in the beacon of transmission beacon frame after the time period in superframe.
31, method as claimed in claim 30, wherein, the particular channel time block with specific size is positioned at beacon after the time period in superframe.
32, method as claimed in claim 29, wherein, control command comprises:
Information request command, be used for asking about be included in superframe one or more scheduling time section schedule information;
Information response's order produces in response to described information request command and comprises schedule information.
33, method as claimed in claim 32, wherein, information request command comprises at least one in identifier field, size field and the spare fields, wherein, described identifier field indication control command is an information request command, the size of described size field indication information request command, described spare fields are the fields of distributing for the various operations on the network.
34, method as claimed in claim 32, wherein, information response's order comprises at least one in identifier field, size field, spare fields and the data field, wherein, described identifier field indication control command is information response's order, the size of described size field indication information response command, described spare fields are the fields of distributing for the various operations on the network, in described data field middle finger degree of setting the tone information.
35, method as claimed in claim 32, wherein, schedule information comprises:
Index field, the indication corresponding information is a schedule information;
Size field, the size of indication schedule information;
One or more Scheduling Blocks.
36, method as claimed in claim 35, wherein, described Scheduling Block comprises:
Static indication field, whether the indication Scheduling Block is used for static scheduling;
Source field, it is the transmission website of a channel time blocks allocated frequency band that indication is allowed to;
Destination field, indication is from sending website receives data by the channel time blocks of having distributed frequency band receiving station;
Stream index field, the designation data type;
The beginning offset field, the time started of indication and corresponding particular schedule time period of Scheduling Block;
Time block duration field, indication is included in the gap between the channel time blocks of particular schedule in the time period;
Scheduling time the section field, indication is included in the interval between time started of two continuous channel time blocks of particular schedule in the time period;
The number field of time block, indication is included in the number of the channel time blocks of particular schedule in the time period.
37, method as claimed in claim 29, wherein, channel time blocks is the time period that sends or receive data in the website on the network.
38, method as claimed in claim 37, wherein, data comprise unpressed data.
39, method as claimed in claim 29, wherein, channel time blocks comprises:
The channel time blocks of reserving is the time period for the reservation of the particular station allocated frequency band on the network;
The channel time blocks of Yu Liuing not is the time period for a website allocated frequency band of selecting by competition on the network.
40, method as claimed in claim 39, wherein, the particular channel time block is the channel time blocks of not reserving.
41, method as claimed in claim 29 wherein, sends or receives the bag that comprises control command by Carrier Sense Multiple Access/method for collision avoidance or time slot aloha method.
42, method as claimed in claim 29, wherein, communication channel comprises the communication channel of 60GHz frequency band.
43, the method for a kind of transmission/reception data comprises:
Determine whether to receive beacon frame;
According to determining that the result produces the bag that comprises first order, described first order is used to ask to have the schedule information of superframe of the beacon frame of transmission;
Send the bag that comprises first order by the particular channel time block that is included in the one or more channel time blocks in the superframe;
Receive the bag that comprise second order of conduct to the response of the bag of transmission, described second order is used to notify schedule information.
44, method as claimed in claim 43, wherein, the particular channel time block tightly is arranged in the beacon of transmission beacon frame after the time period in superframe.
45, method as claimed in claim 44, wherein, the particular channel time block with specific size is positioned at beacon after the time period in superframe.
46, method as claimed in claim 43, wherein, channel time blocks is the time period that sends or receive data in the website on network.
47, method as claimed in claim 46, wherein, described data comprise unpressed data.
48, method as claimed in claim 43, wherein, channel time blocks comprises:
The channel time blocks of reserving is the time period for the reservation of the particular station allocated frequency band on the network;
The channel time blocks of Yu Liuing not is the time period for a website allocated frequency band of selecting by competition on the network.
49, method as claimed in claim 48, wherein, the particular channel time block is the channel time blocks of not reserving.
50, method as claimed in claim 43, wherein, first order comprises at least one in identifier field, size field and the spare fields, wherein, described identifier field indication the corresponding command is first order, the size of described size field indication first order, described spare fields is the field of distributing for the various operations on the network.
51, method as claimed in claim 43, wherein, second order comprises at least one in identifier field, size field, spare fields and the data field, wherein, described identifier field indication the corresponding command is second order, the size of described size field indication second order, described spare fields is the field of distributing for the various operations on the network, in described data field middle finger degree of setting the tone information.
52, method as claimed in claim 43, wherein, schedule information comprises:
Index field, the indication corresponding information is a schedule information;
Size field, the size of indication schedule information;
One or more Scheduling Blocks.
53, method as claimed in claim 52, wherein, described Scheduling Block comprises:
Static indication field, whether the indication Scheduling Block is used for static scheduling;
Source field, it is the transmission website of a channel time blocks allocated frequency band that indication is allowed to;
Destination field, indication is from sending website receives data by the channel time blocks of having distributed frequency band receiving station;
Stream index field, the designation data type;
The beginning offset field, the time started of indication and corresponding particular schedule time period of Scheduling Block;
Time block duration field, indication is included in the gap between the channel time blocks of particular schedule in the time period;
Scheduling time the section field, indication is included in the interval between time started of two continuous channel time blocks of particular schedule in the time period;
The number field of time block, indication is included in the number of the channel time blocks of particular schedule in the time period.
54, method as claimed in claim 43 wherein, sends or receives the bag that comprises first order and comprise second bag of ordering by Carrier Sense Multiple Access/method for collision avoidance or time slot aloha method.
55, method as claimed in claim 43, wherein, communication channel comprises the communication channel of 60GHz frequency band.
56, method as claimed in claim 43, wherein, the step that receives the bag that comprises second order comprises: the destination address according to the bag that comprises first order receives the bag that comprises second order from another website on wireless network coordinator or the network.
57, a kind of data structure that is stored in the computer-readable memory comprises:
Static indication field, whether the indication Scheduling Block is used for static scheduling, and described Scheduling Block is specified the scheduling of the one or more channel time blocks that are used for being included in superframe;
Source field, it is the transmission website of a channel time blocks allocated frequency band that indication is allowed to;
Destination field, indication is from sending website receives data by the channel time blocks of having distributed frequency band receiving station;
Stream index field, the designation data type;
The beginning offset field, the time started of indication and corresponding particular schedule time period of Scheduling Block;
Time block duration field, indication is included in the gap between the channel time blocks of particular schedule in the time period;
Scheduling time the section field, indication is included in the interval between time started of two continuous channel time blocks of particular schedule in the time period;
The number field of time block, indication is included in the number of the channel time blocks of particular schedule in the time period.
58, data structure as claimed in claim 57, wherein, static scheduling comprises: the scheduling of the channel time blocks that the special time in the special time period of superframe exists.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US83147306P | 2006-07-18 | 2006-07-18 | |
| US60/831,473 | 2006-07-18 | ||
| KR1020060088725 | 2006-09-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101455034A true CN101455034A (en) | 2009-06-10 |
Family
ID=39221195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800199954A Pending CN101455034A (en) | 2006-07-18 | 2007-07-10 | Wireless network system and method for transmitting/receiving data under the wireless network |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20080008196A (en) |
| CN (1) | CN101455034A (en) |
| TW (1) | TW200810481A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102461031A (en) * | 2009-06-12 | 2012-05-16 | Lg电子株式会社 | Method of managing carriers in a broadband wireless access system |
| CN101632257B (en) * | 2006-12-01 | 2012-07-18 | Lg电子株式会社 | Method of allocating resources in a wireless network |
| CN102859904A (en) * | 2010-02-22 | 2013-01-02 | 三星电子株式会社 | Methods and device of managing resources in a wireless communication network |
| CN103619044A (en) * | 2009-09-01 | 2014-03-05 | 英特尔公司 | Device, system and method of transferring wireless communication session between wireless communication frequency bands |
| CN106576020A (en) * | 2014-08-21 | 2017-04-19 | Lg 电子株式会社 | Data transmission method in wireless communication system, and apparatus therefor |
| CN108601090A (en) * | 2011-09-20 | 2018-09-28 | 华为技术有限公司 | For managing the system and method competed in wireless communication system |
-
2006
- 2006-09-13 KR KR1020060088725A patent/KR20080008196A/en not_active Application Discontinuation
-
2007
- 2007-07-10 CN CNA2007800199954A patent/CN101455034A/en active Pending
- 2007-07-18 TW TW096126117A patent/TW200810481A/en unknown
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101632257B (en) * | 2006-12-01 | 2012-07-18 | Lg电子株式会社 | Method of allocating resources in a wireless network |
| US9332538B2 (en) | 2006-12-01 | 2016-05-03 | Lg Electronics Inc. | Method of allocating resources in a wireless network |
| US9585137B2 (en) | 2006-12-01 | 2017-02-28 | Lg Electronics Inc. | Method of allocating resources in a wireless network |
| CN102461031A (en) * | 2009-06-12 | 2012-05-16 | Lg电子株式会社 | Method of managing carriers in a broadband wireless access system |
| CN103619044B (en) * | 2009-09-01 | 2017-10-31 | 英特尔公司 | The devices, systems, and methods of wireless communication sessions are shifted between wireless communication frequency band |
| US10122504B2 (en) | 2009-09-01 | 2018-11-06 | Intel Corporation | Device, system and method of transferring a wireless communication session between wireless communication frequency bands |
| CN103619044A (en) * | 2009-09-01 | 2014-03-05 | 英特尔公司 | Device, system and method of transferring wireless communication session between wireless communication frequency bands |
| US10027452B2 (en) | 2009-09-01 | 2018-07-17 | Intel Corporation | Device, system and method of transferring a wireless communication session between wireless communication frequency bands |
| US9525525B2 (en) | 2009-09-01 | 2016-12-20 | Intel Corporation | Device, system and method of transferring a wireless communication session between wireless communication frequency bands |
| US8953633B2 (en) | 2010-02-22 | 2015-02-10 | Samsung Electronics Co., Ltd. | Methods and device of managing resources in a wireless communication network |
| CN102859904B (en) * | 2010-02-22 | 2015-02-25 | 三星电子株式会社 | Methods and device of managing resources in a wireless communication network |
| CN102859904A (en) * | 2010-02-22 | 2013-01-02 | 三星电子株式会社 | Methods and device of managing resources in a wireless communication network |
| CN108601090A (en) * | 2011-09-20 | 2018-09-28 | 华为技术有限公司 | For managing the system and method competed in wireless communication system |
| CN108601090B (en) * | 2011-09-20 | 2021-10-26 | 华为技术有限公司 | System and method for managing contention in a wireless communication system |
| CN106576020A (en) * | 2014-08-21 | 2017-04-19 | Lg 电子株式会社 | Data transmission method in wireless communication system, and apparatus therefor |
| CN106576020B (en) * | 2014-08-21 | 2020-04-24 | Lg 电子株式会社 | Data transmission method in wireless communication system and apparatus thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200810481A (en) | 2008-02-16 |
| KR20080008196A (en) | 2008-01-23 |
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