CN105007147B

CN105007147B - A kind of wireless communications method, apparatus and system

Info

Publication number: CN105007147B
Application number: CN201410547122.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Meizu Technology China Co Ltd
Current assignee: Meizu Technology Co Ltd
Priority date: 2014-10-15
Filing date: 2014-10-15
Publication date: 2019-01-22
Anticipated expiration: 2034-10-15
Also published as: CN105007147A

Abstract

The embodiment of the invention discloses a kind of wireless communications methods, it include: the subcarrier assignment messages frame for generating preset channel, the subcarrier assignment messages frame includes: address field and the corresponding information field of address field, wherein, the value of address field is that the network address of the corresponding second device of address field identifies, and the value of information field is that the subcarrier of the corresponding second device of address field distributes information；Send the subcarrier assignment messages frame.The invention also discloses relevant apparatus and system, using the present invention, it can be achieved that in the downlink of frequency division multiplexing communication system, provide corresponding sub-carrier distribution manner to the different users in preset channel, are conducive to the utilization efficiency for improving frequency spectrum.

Description

A kind of wireless communications method, apparatus and system

Technical field

The present invention relates to the communications field more particularly to a kind of wireless communications methods, apparatus and system.

Background technique

Wireless Fidelity (Wireless Fidelity, Wi-Fi) provides the Wireless Broadband MAN of convenient and efficient, Wi-Fi technology experienced the stages such as 802.11a/b/g/n/ac from 1997, and each stage is to be promoted based on network rate Line focuses on smooth evolution and backward compatibility, so that the market of Wi-Fi obtains Rapid Popularization.But face mobile internet era The rapid growth of middle video traffic, HD video, especially following high definition interaction immersion type video traffic is attacked, even if at first Into 802.11ac technology be still difficult to meet the needs of high traffic High-Speed Amplification.Therefore, in the research of next-generation high speed Wi-Fi In, handling capacity is improved, especially improving is that (existing Wi-Fi technology refers to a BSA (Basic Service to base area Area the handling capacity in)) becomes research emphasis.

But existing Wi-Fi standard does not use OFDMA technology, the communication of user equipment is exclusive in downlink The mode of channel, for example each user equipment occupies under the channel width of 5MHz, 10MHz and 20MHz in 802.11a Subcarrier number be all 52, and the subcarrier that each user equipment occupies under the bandwidth of 20MHz in 802.11n Number is 56, in this way, being unfavorable for improving the availability of frequency spectrum of channel shared by the downlink of base area (BSA), is also unfavorable for Wi-Fi realizes higher throughput in base area (BSA).

Summary of the invention

The technical problem to be solved by the embodiment of the invention is that a kind of wireless communications method, apparatus and system are provided, it can It realizes in the downlink of frequency division multiplexing communication system, provides corresponding sub- load to the different users in preset channel The wave method of salary distribution is conducive to the utilization efficiency for improving frequency spectrum.

In a first aspect, the embodiment of the invention provides a kind of wireless communications methods, comprising:

The subcarrier assignment messages frame of preset channel is generated, the subcarrier assignment messages frame includes: address field and institute State the corresponding information field of address field, wherein the value of the address field is the corresponding second device of the address field Network address mark, the value of the information field are that the subcarrier of the corresponding second device of the address field distributes information；

Send the subcarrier assignment messages frame.

With reference to first aspect, in the first possible implementation, the network address of the second device is identified as matchmaker Jie's accessing to control address or association identification.

With reference to first aspect, in the second possible implementation, the son of the corresponding second device of the address field Carrier wave distribution information includes: the serial number of the initial subcarrier of the second device and the continuous subcarrier of the second device Number；

The corresponding information field of the address field includes: the first subfield and the second subfield, in which: first son The value of field is the serial number of the initial subcarrier of the corresponding second device of the address field, and the value of second subfield is institute State the continuous subcarrier number of the corresponding second device of address field.

With reference to first aspect, in the third possible implementation, the son of the corresponding second device of the address field Carrier wave distribution information includes: the subcarrier allocation vector of the second device；

The serial number of each bit in the corresponding information field of the address field with it is each in the preset channel The serial number of subcarrier corresponds；The value of each bit in the corresponding information field of the address field is used to indicate each The serial number of bit whether be the corresponding second device of the address field subcarrier serial number.

The third possible implementation with reference to first aspect, in the fourth possible implementation, the address Whether the serial number that the value of each bit in the corresponding information field of field is used to indicate each bit is the address word The serial number of the subcarrier of the corresponding second device of section includes:

In the corresponding information field of the address field, being worth for the serial number of the bit of " 1 " is the address field pair The serial number of the subcarrier for the second device answered；Or

In the corresponding information field of the address field, being worth for the serial number of the bit of " 0 " is the address field pair The serial number of the subcarrier for the second device answered.

Perhaps second of the first possible implementation of first aspect or first aspect with reference to first aspect The 4th kind of possible implementation perhaps the third possible implementation of first aspect or first aspect is possible Implementation, the subcarrier assignment messages frame is beacon frame or action message frame in a fifth possible implementation.

Second aspect, the embodiment of the invention provides a kind of wireless communications methods, comprising:

Receive the subcarrier assignment messages frame for the preset channel that first device is sent；The subcarrier assignment messages frame packet It includes: address field and the corresponding information field of the address field, wherein the value of the address field is the address field pair The network address for the second device answered identifies, and the value of the information field is that the son of the corresponding second device of the address field carries Information is matched in wavelength-division；

Described current the is obtained in the subcarrier assignment messages frame according to the network address of current second device mark The corresponding information field of two devices；The value of the corresponding information field of the current second device is the son of the current second device Carrier wave distributes information.

In conjunction with second aspect, in the first possible implementation, the network address of the current second device of basis Mark obtains the corresponding information field of the current second device in the subcarrier assignment messages frame and includes:

The value of address field and the network address of the current second device are found in the subcarrier assignment messages frame The address field of identity equality is the corresponding address field of the current second device；

According to the corresponding address field of the current second device, described work as is found in the subcarrier assignment messages frame The corresponding information field of preceding second device.

In conjunction with the first possible implementation of second aspect, in the second possible implementation, described second The subcarrier distribution information of device includes the serial number of the initial subcarrier of the second device and the continuous son of the second device Variable number；

Described according to the acquisition in the subcarrier assignment messages frame of the network address of current second device mark After the corresponding information field of current second device, further includes:

Parsing the corresponding information field of the current second device is the first subfield and the second subfield；First son The value of field is the serial number of the initial subcarrier of the current second device；The value of second subfield is described current second The number of the continuous subcarrier of device；

The son of the current second device is obtained according to the value of the value of first subfield and second subfield The serial number of carrier wave.

In conjunction with the first possible implementation of second aspect, in the third possible implementation, described second The subcarrier distribution information of device includes the subcarrier allocation vector of the second device；

According to the current second device corresponding information field it is worth go out the current second device subcarrier Serial number；The value of the corresponding information field of the current second device is the subcarrier allocation vector of the current second device.

In conjunction with second of possible implementation of second aspect, in the fourth possible implementation, the basis The value of the value of first subfield and second subfield obtains the serial number packet of the subcarrier of the current second device It includes:

It is added up one by one since the value of first subfield to obtain continuous N number of serial number, the N is equal to described second The value of subfield, the subcarrier serial number of the continuous N number of serial number, that is, current second device；N number of serial number includes institute State the serial number of the initial subcarrier of current second device；The N is the natural number more than or equal to 1.

In conjunction with the third possible implementation of second aspect, in a fifth possible implementation, the basis The corresponding information field of the current second device it is worth go out the current second device the serial number of subcarrier include:

In the corresponding information field of the current second device, it is using value " serial number of 1 " bit works as described in The subcarrier serial number of preceding second device；Or

In the corresponding information field of the current second device, it is using value " serial number of 0 " bit works as described in The subcarrier serial number of preceding second device.

The third aspect, the embodiment of the invention provides a kind of first devices of wireless communication, comprising:

Frame generation module, for generating the subcarrier assignment messages frame of preset channel, the subcarrier assignment messages frame packet It includes: address field and the corresponding information field of the address field, wherein the value of the address field is the address field pair The network address for the second device answered identifies, and the value of the information field is that the son of the corresponding second device of the address field carries Information is matched in wavelength-division；

Frame sending module, for sending the subcarrier assignment messages frame to the second device.

In conjunction with the third aspect, in the first possible implementation, the network address of the second device is identified as matchmaker Jie's accessing to control address or association identification.

In conjunction with the third aspect, in the second possible implementation, the son of the corresponding second device of the address field Carrier wave distribution information includes: the serial number of the initial subcarrier of the second device and the continuous subcarrier of the second device Number；

In conjunction with the third aspect, in the third possible implementation, the son of the corresponding second device of the address field Carrier wave distribution information includes: the subcarrier allocation vector of the second device；

In conjunction with the third possible implementation of the third aspect, in the fourth possible implementation, the address Whether the serial number that the value of each bit in the corresponding information field of field is used to indicate each bit is the address word The serial number of the subcarrier of the corresponding second device of section includes:

Fourth aspect, the embodiment of the present invention provide a kind of second device of wireless communication, and the second device includes:

Frame receiving module, the subcarrier assignment messages frame of the preset channel for receiving first device transmission；The sub- load Wavelength-division includes: address field and the corresponding information field of the address field with message frame, wherein the value of the address field is The network address mark of the corresponding second device of the address field, the value of the information field are that the address field is corresponding The subcarrier of second device distributes information；

Frame processing module, for being identified in the subcarrier assignment messages frame according to the network address of current second device Obtain the corresponding information field of the current second device；The value of the corresponding information field of the current second device is described works as The subcarrier of preceding second device distributes information.

In conjunction with fourth aspect, in the first possible implementation, the frame processing module includes:

First obtains module, for finding the value and described current the of address field in the subcarrier assignment messages frame The address field of the network address identity equality of two devices is the corresponding address field of the current second device；

Second obtains module, for being distributed in the subcarrier according to the corresponding address field of the current second device The corresponding information field of the current second device is found in message frame.

In conjunction with fourth aspect, in the second possible implementation, the subcarrier of the second device distributes packet Include the serial number of the initial subcarrier of the second device and the continuous subcarrier number of the second device；

The second device further include: first information field processing module, in the current second device of the basis After network address mark obtains the corresponding information field of the current second device in the subcarrier assignment messages frame, hold Row:

In conjunction with fourth aspect, in the third possible implementation, the subcarrier of the second device distributes packet Include the subcarrier allocation vector of the second device；

The second device further include: the second information field processing module, in the current second device of the basis After network address mark obtains the corresponding information field of the current second device in the subcarrier assignment messages frame, hold Row:

In conjunction with second of possible implementation of fourth aspect, in the fourth possible implementation, described first Information field processing module includes:

Information field parsing module, for parse the corresponding information field of the current second device be the first subfield and Second subfield；The value of first subfield is the serial number of the initial subcarrier of the current second device；Second son The value of field is the number of the continuous subcarrier of the current second device；

First subcarrier obtains module, for according to the value of the value of first subfield and second subfield come To the serial number of the subcarrier of the current second device.

In conjunction with the 4th kind of possible implementation of fourth aspect, in a fifth possible implementation, described first Subcarrier obtains module and is specifically used for:

In conjunction with the third possible implementation of fourth aspect, in a sixth possible implementation, described second Information field processing module includes:

Second subcarrier obtains module, in the corresponding information field of the current second device, will value be 1 ratio Subcarrier serial number of the serial number of special position as the current second device；Or

Third subcarrier obtains module, in the corresponding information field of the current second device, will value be 0 ratio Subcarrier serial number of the serial number of special position as the current second device.

5th aspect, the embodiment of the present invention provide a kind of wireless communication system, including first device and second device, wherein

The first device is the first possible implementation or third such as the third aspect perhaps third aspect The possible implementation of second of aspect perhaps the third possible implementation of the third aspect or the third aspect Wireless transmission device in 4th kind of possible implementation；

The second device is the first possible implementation or the 4th such as fourth aspect perhaps fourth aspect The possible implementation of second of aspect perhaps the third possible implementation of fourth aspect or fourth aspect The 6th kind of 4th kind of possible implementation perhaps the 5th kind of possible implementation of fourth aspect or fourth aspect Radio receiver in possible implementation.

In conclusion by implementing the embodiment of the present invention, first device is disappeared by generating the subcarrier distribution of preset channel Frame is ceased, and sends the message frame to second device, which includes: that address field and address field are corresponding Information field, wherein the value of address field is that the network address of the corresponding second device of address field identifies, the value of information field For the corresponding second device of address field subcarrier distribute information, it can be achieved that frequency division multiplexing communication system downlink In, corresponding sub-carrier distribution manner is provided to the different second devices in preset channel, is conducive to improve frequency spectrum Utilization efficiency.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is the flow chart of the first device side of wireless communications method provided by the invention；

Fig. 2 is the flow chart of the first embodiment of the second device side of wireless communications method provided by the invention；

Fig. 3 is the flow chart of the second embodiment of the second device side of wireless communications method provided by the invention；

Fig. 4 is the flow chart of the 3rd embodiment of the second device side of wireless communications method provided by the invention；

Fig. 5 is the schematic diagram of the first sub-carrier assignment messages frame provided by the invention；

Fig. 6 is the schematic diagram of second seed carrier wave assignment messages frame provided by the invention；

Fig. 7 is the schematic diagram of third sub-carrier assignment messages frame provided by the invention；

Fig. 8 is the schematic diagram of the information field in third sub-carrier assignment messages frame provided by the invention；

Fig. 9 is the first device structural schematic diagram of wireless communication provided by the invention；

Figure 10 is the structural schematic diagram of the first embodiment of the second device of wireless communication provided by the invention；

Figure 11 is the structural schematic diagram of the second embodiment of the second device of wireless communication provided by the invention；

Figure 12 is the structural schematic diagram of the 3rd embodiment of the second device of wireless communication provided by the invention；

Figure 13 is the schematic diagram of wireless communication system provided by the invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

It should be noted that the term used in embodiments of the present invention is only merely for the mesh of description specific embodiment , it is not intended to limit the invention." the one of the embodiment of the present invention and singular used in the attached claims Kind ", " described " and "the" are also intended to including most forms, unless the context clearly indicates other meaning.It is also understood that this Term "and/or" used herein refers to and includes one or more associated any or all possible group for listing project It closes.

It is the flow chart of the first device side of wireless communications method provided by the invention referring to Fig. 1, this method comprises:

Step S101: the subcarrier assignment messages frame of preset channel is generated, subcarrier assignment messages frame includes: address field Information field corresponding with address field, wherein the value of address field is the network address of the corresponding second device of address field Mark, the value of information field are that the subcarrier of the corresponding second device of address field distributes information.

Here, preset channel can be in frequency division multiplexing communication system, shared by the downlink of access point coverage area The channel of fixed-bandwidth.It, can be according to each for whole subcarriers in the preset channel in frequency division multiplexing communication system The centre frequency of a subcarrier is come to each subcarrier number.For example, having n subcarrier in above-mentioned preset channel, by this n son Carrier wave is numbered from low to high according to centre frequency, number 1,2 ..., n；Wherein, n is the natural number greater than 1；It is intelligible, In this n subcarrier, the centre frequency for the subcarrier that number is n be it is highest, the centre frequency for the subcarrier that number is 1 is Minimum.

Above-mentioned second device can be user equipment or mobile device, can also be other communication equipments, and above-mentioned second Device corresponds to particular user.It, can be according to the service request and difference of the different user in above-mentioned preset channel in practical application Characteristic of channel locating for user etc. is because usually dynamically allocating subcarriers to the different user in above-mentioned preset channel.For example, N subcarrier in above-mentioned preset channel is distributed into m user in the corresponding communication cell of above-mentioned preset channel, wherein m For the natural number greater than 1, m is less than n.

Specifically, the sub-carrier distribution manner of above-mentioned preset channel can be encapsulated in message frame by first device, to The distribution of the subcarrier of above-mentioned preset channel is realized by the way that the message frame is sent to communication equipment, the message frame is as above-mentioned Subcarrier assignment messages frame.

Above-mentioned subcarrier assignment messages frame can include: address field and the corresponding information field of address field as shown in Figure 5, Wherein, the quantity of address field is at least one, and the quantity of corresponding information field is also at least one.For example, such as Fig. 5 institute Show, " address field 1 " correspondence " information field 1 ", " address field 2 " correspondence " information field 2.

Wherein, the value of address field is that the network address of the corresponding second device of address field identifies, for example, medium access Control address or association identification；The value of information field is that the subcarrier of the corresponding second device of address field distributes information.Here, Second device is user equipment or mobile device, corresponds to specific user, and the wireless communications method of the application is related to multiple the Two devices are related to multiple users.

In the application, different address fields corresponds to different second devices.Specifically, address field respectively corresponds not Same user, also corresponds respectively to second device corresponding to user.For example, " address field 1 " correspondence " user 1 ", " address word Section 2 " is corresponding " user 2 ", that is, " address field 1 " corresponds to " second device corresponding to user 1 ", " address field 2 " corresponds to " second device corresponding to user 2 ".That is, the value of " address field 1 " is the net of " second device corresponding to user 1 " Network address mark, the value of " address field 2 " are that the network address of " second device corresponding to user 2 " identifies.It is intelligible, on It states citing to be merely illustrative, the corresponding relationship of address field and user in the application can have more possibility.

Step S103: subcarrier assignment messages frame is sent.

Specifically, above-mentioned subcarrier assignment messages frame can be sent to second device by first device, to realize the second dress It sets and corresponding subcarrier distribution information is obtained in above-mentioned subcarrier assignment messages frame according to respective network address mark. In the specific implementation, above-mentioned subcarrier assignment messages frame, above-mentioned subcarrier point can be sent by broadcast mechanism or signaling mechanism It can be beacon frame or action message frame with message frame.

Further, in Frequency Division Multiplexing system, the method for salary distribution of subcarrier includes centralized and distributed, wherein collection Chinese style is also known as the method for salary distribution based on sub-block, and in the method for salary distribution of centralization, multiple continuous subcarriers distribute to one User, thus, in centralised allocation mode, the different sub-carrier section of different user occupancies；In addition, distributed also known as hand over The method of salary distribution is knitted, in distributed allocation mode, the subcarrier that a user occupies is discrete distribution.

Specifically, for the sub-carrier distribution manner of centralization, in above-mentioned subcarrier assignment messages frame, address field pair The subcarrier of the second device answered distributes information can include: the serial number of the initial subcarrier of second device and second device it is continuous Subcarrier number；The corresponding information field of address field includes: the first subfield and the second subfield, in which: the first subfield Value be the corresponding second device of address field initial subcarrier serial number, the value of the second subfield is that address field is corresponding The continuous subcarrier number of second device.

Here, centralized subcarrier assignment messages frame can with as shown in fig. 6, " information field 1 " correspondence " user 1 " son Carrier wave distributes information, and the subcarrier of " information field 2 " correspondence " user 2 " distributes information, wherein first son of " information field 1 " The value of field is " initial subcarrier serial number 1 ", and the value of second subfield of " information field 1 " is " subcarrier number 1 "；" information The value of first subfield of field 2 " is " initial subcarrier serial number 2 ", and the value of second subfield of " information field 2 " is " sub- load Wave number 2 ".

In subcarrier assignment messages frame shown in Fig. 6, " initial subcarrier serial number 1 " and " subcarrier number 1 " is for referring to Show the subcarrier that " user 1 " is distributed, for example, " initial subcarrier serial number 1 " is " 00000001 ", " subcarrier number 1 " is " 00011111 ", indicating the 1st subcarrier since above-mentioned preset channel, 31 subcarriers of continuous dispensing give " user 1"." initial subcarrier serial number 2 " and " subcarrier number 2 " are used to indicate the subcarrier that " user 2 " are distributed, for example, " initial son Carrier wave serial number 2 " is that " 00100000 " " subcarrier number 2 " is " 00001111 ", indicates the 32nd from above-mentioned preset channel Subcarrier starts, and 15 subcarriers of continuous dispensing give " user 2 ".

Specifically, the subcarrier of the corresponding second device of address field distributes for distributed sub-carrier distribution manner Information includes: the subcarrier allocation vector of second device；The serial number of each bit in the corresponding information field of address field It is corresponded with the serial number of each subcarrier in preset channel；Each bit in the corresponding information field of address field Value be used to indicate each bit serial number whether be the corresponding second device of address field subcarrier serial number.

Here, distributed subcarrier assignment messages frame can with as shown in fig. 7, " information field 1 " correspondence " user 1 " son Carrier wave distributes information, and the subcarrier of " information field 2 " correspondence " user 2 " distributes information, wherein the value of " information field 1 " is " son The value of carrier wave allocation vector 1 ", " information field 2 " is " subcarrier allocation vector 2 ", and " subcarrier allocation vector 1 " is used to indicate The subcarrier that " user 1 " is distributed, " subcarrier allocation vector 2 " are used to indicate the subcarrier that " user 2 " are distributed.It needs to illustrate , in distributed subcarrier assignment messages frame, the corresponding subcarrier allocation vector of each user is pairwise orthogonal.

Information field in distributed subcarrier assignment messages frame can be as shown in Figure 8, wherein information shown in Fig. 8 The value of field is " 1100101010101010 ", and " 1100101010101010 " share 16 bits, are used to indicate above-mentioned pre- If there is 16 subcarriers in channel, most significant bit position is " 1 ", and the serial number " 16 " of bit is above-mentioned default for corresponding to The 16th subcarrier in channel, significant bits position are " 0 ", the serial number " 1 " of bit, for corresponding to above-mentioned default letter The 1st subcarrier in road, can specifically analogize, which is not described herein again as shown.

Specifically, the value of each bit in the corresponding information field of address above mentioned field may be used to indicate each bit Position serial number whether be the corresponding second device of the address field subcarrier serial number the step of may include: in address field In corresponding information field, it is worth the sequence that the serial number for the bit of " 1 " is the subcarrier of the corresponding second device of the address field Number；Or in the corresponding information field of address field, being worth for the serial number of the bit of " 0 " is corresponding second dress of the address field The serial number for the subcarrier set.

In the information field of distributed subcarrier assignment messages frame, can using the serial number being worth for the bit of " 1 " as The serial number of the subcarrier of the corresponding second device of the address field, for example, information field shown in Fig. 8 indicates above-mentioned preset channel In the subcarrier that is distributed for the corresponding second device of the information field of the 16th, 15,12,10,8,6,4,2 subcarrier.

In the information field of distributed subcarrier assignment messages frame, can also by be worth for the bit of " 0 " serial number work For the serial number of the subcarrier of the corresponding second device of the address field, for example, information field shown in Fig. 8 indicates above-mentioned default letter The subcarrier that the 14th, 13,11,9,7,5,3,1 subcarrier in road is distributed for the corresponding second device of the information field.

Further, in the concrete realization, it can be indicated with an information element IE (Information Element) The method of salary distribution, for example, " 00000001 " indicates that the method for salary distribution of subcarrier is centralization, " 00000010 " indicates point of subcarrier It is distribution with mode.

It should be noted that in practical applications, for distributed subcarrier assignment messages frame, information field institute therein The allocation vector of expression can also be other forms of expression, here with no restriction.

The network address mark of above-mentioned second device in the embodiment of the present invention can be Media Access Control address or pass Connection mark.

The embodiment of the present invention by generating the subcarrier assignment messages frame of preset channel, and sends the message frame to second Device, the subcarrier assignment messages frame include: address field and the corresponding information field of address field, wherein address field Value is that the network address of the corresponding second device of address field identifies, and the value of information field is the corresponding second device of address field Subcarrier distribution information, it can be achieved that in the downlink of frequency division multiplexing communication system, to different the in preset channel Two devices provide corresponding sub-carrier distribution manner, are conducive to the utilization efficiency for improving frequency spectrum.

Referring to fig. 2, be wireless communications method provided by the invention second device side first embodiment flow chart, the party Method includes:

Step S201: the subcarrier assignment messages frame for the preset channel that first device is sent is received；Subcarrier assignment messages Frame includes: address field and the corresponding information field of address field, wherein the value of address field is address field corresponding second The network address of device identifies, and the value of information field is that the subcarrier of the corresponding second device of address field distributes information.

Specifically, the above-mentioned subcarrier assignment messages frame that first device is sent is received, to by parsing above-mentioned subcarrier Assignment messages frame distributes information to obtain corresponding subcarrier.

Above-mentioned subcarrier assignment messages frame can include: address field and the corresponding information field of address field as shown in Figure 5, Wherein, the value of address field is that the network address of the corresponding second device of address field identifies, for example, Media Access Control address Or association identification；The value of information field is that the subcarrier of the corresponding second device of address field distributes information.It specifically can be such as Fig. 5 institute Show, " address field 1 " correspondence " information field 1 ", " address field 2 " correspondence " information field 2 ", wherein " address field 1 " is corresponding " user 1 ", " address field 2 " correspondence " user 2 ", the value of " address field 1 " are the network of " user 1 " corresponding second device Location mark, the value of " address field 2 " are that the network address of " user 2 " corresponding second device identifies.

Step S203: current the is obtained in subcarrier assignment messages frame according to the network address of current second device mark The corresponding information field of two devices；The value of the corresponding information field of current second device is that the subcarrier of current second device distributes Information.

Specifically, the value of address field and the network of current second device can be found in subcarrier assignment messages frame The address field of location identity equality is the corresponding address field of current second device, and then correspondingly according to current second device Location field finds the corresponding information field of current second device in subcarrier assignment messages frame.

For example, the network address of current second device is identified as " address field 2 ", then " information field 2 " is current second The information field of device, the value of " information field 2 " are that the subcarrier of current second device distributes information.

It is the flow chart of the second device side second embodiment of wireless communications method provided by the invention, the party referring to Fig. 3 Method includes:

Step S201: the subcarrier assignment messages frame for the preset channel that first device is sent is received；The subcarrier distribution Message frame includes: address field and the corresponding information field of the address field, wherein the value of the address field is describedly The network address of the corresponding second device of location field identifies, and the value of the information field is corresponding second dress of the address field The subcarrier distribution information set.

Specifically, for details, reference can be made to the contents described in Fig. 2 by above-mentioned steps S201 and above-mentioned steps S203, it is no longer superfluous here It states.

Step S301: parsing the corresponding information field of current second device is the first subfield and the second subfield；First The value of subfield is the serial number of the initial subcarrier of current second device；The value of second subfield is the continuous of current second device The number of subcarrier.

In the concrete realization, current second device also can receive to an information element IE (Information Element), which is used to indicate the sub-carrier distribution manner that above-mentioned subcarrier assignment messages frame is characterized, for example, " 00000001 " indicates that sub-carrier distribution manner is centralization, and " 00000010 " indicates that sub-carrier distribution manner is distributed.

Specifically, the subcarrier of current second device distributes information for the sub-carrier distribution manner of centralization can include: The serial number of the initial subcarrier of current second device and the continuous subcarrier number of current second device；The corresponding letter of address field Ceasing field includes: the first subfield and the second subfield, in which: the initial subcarrier of the current second device of the value of the first subfield Serial number, the value of the second subfield is the continuous subcarrier number of the corresponding second device of address field.

Here, the corresponding information field of current second device can be information field shown in Fig. 6, for example, current The corresponding information field of two devices is " information field 1 ", and the value of first subfield of " information field 1 " is " initial subcarrier sequence Number 1 ", the value of second subfield of " information field 1 " is " subcarrier number 1 ", then " initial subcarrier serial number 1 " indicates current the The serial number of the initial subcarrier of two devices, " subcarrier number 1 " indicate the number of the continuous subcarrier of current second device.

Step S303: the subcarrier of current second device is obtained according to the value of the value of the first subfield and the second subfield Serial number.

Specifically, the sub-carrier distribution manner of centralization can be added up one by one since the value of the first subfield and Continuous N number of serial number is obtained, N is equal to the value of the second subfield, the subcarrier of the continuous N number of serial number, that is, current second device Serial number；N number of serial number includes the serial number of the initial subcarrier of current second device；N is the natural number more than or equal to 1.

For example, in subcarrier assignment messages frame shown in Fig. 6, the corresponding information field of current second device is " information Field 1 ", wherein " initial subcarrier serial number 1 " is " 00000001 ", and " subcarrier number 1 " is " 00011111 ", then it represents that from The 1st subcarrier in above-mentioned preset channel start, and 31 subcarriers of continuous dispensing give current second device.Example is only A kind of implementation of the embodiment of the present invention, can be different in actual use, should not constitute restriction.

Referring to fig. 4, be wireless communications method provided by the invention second device side 3rd embodiment flow chart, the party Method includes:

Step S401: according to the worth subcarrier of current second device out of the corresponding information field of current second device Serial number；The value of the corresponding information field of current second device is the subcarrier allocation vector of current second device.

Specifically, for distributed sub-carrier distribution manner, the value of the corresponding information field of current second device is specific It can are as follows: the subcarrier allocation vector of second device.The serial number of each bit in the corresponding information field of current second device It is corresponded with the serial number of each subcarrier in preset channel；The value of each bit is used to indicate the serial number of each bit Whether be current second device subcarrier serial number.

The current corresponding information field of second device can be as shown in Figure 8, wherein the value of information field shown in Fig. 8 is " 1100101010101010 ", " 1100101010101010 " share 16 bits, and being used to indicate in above-mentioned preset channel has 16 subcarriers, most significant bit position are " 1 ", the serial number " 16 " of bit, for corresponding to the in above-mentioned preset channel 16 subcarriers, significant bits position are " 0 ", the serial number " 1 " of bit, for corresponding to the 1st in above-mentioned preset channel A subcarrier can specifically analogize as shown, and which is not described herein again.

Specifically, can be using value in the corresponding information field of current second device " serial number of 1 " bit as The subcarrier serial number of current second device；Or in the corresponding information field of current second device, can be by value " 0 " bit Subcarrier serial number of the serial number of position as current second device.

In the corresponding information field of current second device, it can will be worth the serial number for the bit of " 1 " as current second The serial number of the subcarrier of device, for example, information field shown in Fig. 8 is the corresponding information field of current second device, then it represents that The subcarrier that the 16th, 15,12,10,8,6,4,2 subcarrier in above-mentioned preset channel is distributed by current second device.

In the corresponding information field of current second device, it can will also be worth the serial number for the bit of " 0 " as current The serial number of the subcarrier of two devices, for example, information field shown in Fig. 8 is the corresponding information field of current second device, then table Show the subcarrier that the in above-mentioned preset channel the 14th, 13,11,9,7,5,3,1 subcarrier is distributed by current second device.

Example is only a kind of implementation of the embodiment of the present invention, can be different in actual use, should not constitute restriction.

It is the first device structural schematic diagram of wireless communication provided by the invention referring to Fig. 9.First dress as shown in Figure 9 Set 10 can include: frame generation module 101 and frame sending module 103.Wherein:

Frame generation module 101, for generating the subcarrier assignment messages frame of preset channel, subcarrier assignment messages frame packet It includes: address field and the corresponding information field of address field, wherein the value of address field is the corresponding second device of address field Network address mark, the value of information field is that the subcarrier of the corresponding second device of address field distributes information；

Frame sending module 103, for sending subcarrier assignment messages frame to second device.

Specifically, the network address mark of above-mentioned second device can be Media Access Control address or association identification.

Further, for the sub-carrier distribution manner of centralization, in subcarrier assignment messages frame, address field is corresponding Second device subcarrier distribution information may include: second device initial subcarrier serial number and second device it is continuous Subcarrier number；The corresponding information field of address field includes: the first subfield and the second subfield, in which: the first subfield Value be the corresponding second device of address field initial subcarrier serial number, the value of the second subfield is that address field is corresponding The continuous subcarrier number of second device.

Further, for distributed sub-carrier distribution manner, in subcarrier assignment messages frame, address field pair The subcarrier distribution information for the second device answered may include: the subcarrier allocation vector of second device；Also, address field pair The serial number of each subcarrier in the serial number and preset channel of each bit in the information field answered corresponds；Address word Whether the serial number that the value of each bit in the corresponding information field of section is used to indicate each bit is that address field is corresponding Second device subcarrier serial number.

It further,, can be in the corresponding information field of address field for distributed sub-carrier distribution manner The serial number for the bit of " 1 " will be worth as the serial number of the subcarrier of the corresponding second device of the address field；Or it can incite somebody to action Value be " 0 " bit serial number as the corresponding second device of address field subcarrier serial number.

It is the structural schematic diagram of the first embodiment of the second device of wireless communication provided by the invention referring to Figure 10.Such as Second device 11 shown in Fig. 10 can include: frame receiving module 111 and frame processing module 113.Wherein:

Frame receiving module 111, the subcarrier assignment messages frame of the preset channel for receiving first device transmission；Subcarrier Assignment messages frame includes: address field and the corresponding information field of address field, wherein the value of address field is address field pair The network address for the second device answered identifies, and the value of information field is that the subcarrier of the corresponding second device of address field distributes letter Breath；

Frame processing module 113, for being identified in subcarrier assignment messages frame according to the network address of current second device Obtain the corresponding information field of current second device；The value of the corresponding information field of current second device is current second device Subcarrier distributes information.

Specifically, frame processing module 113 can further include: that the first acquisition module and second obtain module, in which:

First obtains module, for finding the value and current second device of address field in subcarrier assignment messages frame The address field of network address identity equality is the corresponding address field of current second device；

Second obtains module, is used for according to the corresponding address field of current second device, in subcarrier assignment messages frame Find the corresponding information field of current second device.

It is the structural schematic diagram of the second embodiment of the second device of wireless communication provided by the invention referring to Figure 11.Into One step describes in detail the structure of second device 11, and second device as shown in figure 11 can include: 111 He of frame receiving module Outside frame processing module 113, it may also include that first information field processing module 115.Wherein:

First information field processing module 115, for executing the current second device of the basis in frame processing module 113 After the step of network address mark obtains the corresponding information field of current second device in subcarrier assignment messages frame, hold Row:

Parsing the corresponding information field of current second device is the first subfield and the second subfield；The value of first subfield For the serial number of the initial subcarrier of current second device；The value of second subfield is of the continuous subcarrier of current second device Number；

The serial number of the subcarrier of current second device is obtained according to the value of the value of the first subfield and the second subfield.

Specifically, the subcarrier distribution information of second device may include second for the sub-carrier distribution manner of centralization The serial number of the initial subcarrier of device and the continuous subcarrier number of second device, then first information field processing module 115 can The corresponding information field of current second device is resolved to the first subfield and the second subfield, and can be according to the first sub- word The value of section and the value of the second subfield obtain the serial number of the subcarrier of current second device.

Further, first information field processing module 115 can include: information field parsing module as shown in figure 11 1151 and first subcarrier obtain module 1153.Wherein:

Information field parsing module 1151, for parse the corresponding information field of current second device be the first subfield and Second subfield；The value of first subfield is the serial number of the initial subcarrier of current second device；The value of second subfield is to work as The number of the continuous subcarrier of preceding second device；

First subcarrier obtains module 1153, for being worked as according to the value of the value of the first subfield and the second subfield The serial number of the subcarrier of preceding second device.

Further, the first subcarrier obtains module 1153 and can be specifically used for: since the value of the first subfield one by one It adds up to obtain continuous N number of serial number, the N is equal to the value of the second subfield, continuous N number of serial number, that is, current second dress The subcarrier serial number set；N number of serial number includes the serial number of the initial subcarrier of current second device；The N is more than or equal to 1 Natural number.

It is the structural schematic diagram of the 3rd embodiment of the second device of wireless communication provided by the invention referring to Figure 12.Into One step describes in detail the structure of second device 11, and second device as shown in figure 12 can include: 111 He of frame receiving module Outside frame processing module 113, it may also include that the second information field processing module 117.Wherein:

Second information field processing module 117, for identifying according to the network address of current second device in subcarrier After obtaining the corresponding information field of current second device in assignment messages frame, execute:

According to the serial number of the worth subcarrier of current second device out of the corresponding information field of current second device；Currently The value of the corresponding information field of second device is the subcarrier allocation vector of current second device.

Specifically, for distributed sub-carrier distribution manner, the subcarrier distribution information of second device includes described the The subcarrier allocation vector of two devices, then the second information field processing module 117 can be according to the corresponding information of current second device The serial number of the worth subcarrier of current second device out of field.

Further, the second information field processing module 117 can include: that the second subcarrier obtains module as shown in figure 12 1171 and third subcarrier obtain module 1173.

Second subcarrier obtains module 1171, for will be worth the ratio for being 1 in the corresponding information field of current second device Subcarrier serial number of the serial number of special position as current second device；Or

Third subcarrier obtains module 1173, for will be worth the ratio for being 0 in the corresponding information field of current second device Subcarrier serial number of the serial number of special position as current second device.

It is the schematic diagram of wireless communication system provided by the invention referring to Figure 13.Wireless communication system as shown in fig. 13 that 13 can include: first device 131 and second device 133, in which:

First device 131 can be first device described in above-mentioned all the elements, concretely first described in above-mentioned Fig. 9 Device 10, which is not described herein again；

Second device 133 can be second device described in above-mentioned all the elements, concretely above-mentioned Figure 10 to Figure 12 institute The second device 11 stated, which is not described herein again.

In conclusion by implementing the embodiment of the present invention, first device is disappeared by generating the subcarrier distribution of preset channel Frame is ceased, and sends the message frame to second device, which includes: that address field and address field are corresponding Information field, wherein the value of address field is that the network address of the corresponding second device of address field identifies, the value of information field For the corresponding second device of address field subcarrier distribute information, it can be achieved that frequency division multiplexing communication system downlink In, corresponding sub-carrier distribution manner is provided to the different users in preset channel, is conducive to the utilization for improving frequency spectrum Efficiency.

Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with Relevant hardware is instructed to complete by computer program, the program can be stored in a computer-readable storage medium In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access Memory, RAM) etc..

Above disclosed is only a preferred embodiment of the present invention, cannot limit the power of the present invention with this certainly Sharp range, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and weighs according to the present invention Benefit requires made equivalent variations, still belongs to the scope covered by the invention.

Claims

1. a kind of wireless communications method characterized by comprising

The subcarrier assignment messages frame of preset channel is generated, the preset channel is shared by the downlink of access point coverage area Fixed-bandwidth channel；The subcarrier assignment messages frame includes: address field and the corresponding information word of the address field Section, wherein the quantity of the address field is at least two, and the value of the address field is the address field corresponding second The network address of device identifies, and the value of the information field is that the subcarrier of the corresponding second device of the address field distributes letter Breath；

Send the subcarrier assignment messages frame.

2. the method as described in claim 1, which is characterized in that the network address of the second device is identified as medium access control Address processed or association identification.

3. the method as described in claim 1, which is characterized in that the subcarrier distribution of the corresponding second device of the address field Information includes: the serial number of the initial subcarrier of the second device and the continuous subcarrier number of the second device；Describedly Field corresponding information field in location includes: the first subfield and the second subfield, in which: the value of first subfield is described The value of the serial number of the initial subcarrier of the corresponding second device of address field, second subfield is corresponding for the address field Second device continuous subcarrier number.

4. the method as described in claim 1, which is characterized in that the subcarrier distribution of the corresponding second device of the address field Information includes: the subcarrier allocation vector of the second device；

The serial number of each bit in the corresponding information field of the address field and each height in the preset channel carry The serial number of wave corresponds；The value of each bit in the corresponding information field of the address field is used to indicate each bit Position serial number whether be the corresponding second device of the address field subcarrier serial number.

5. method as claimed in claim 4, which is characterized in that each bit in the corresponding information field of the address field Position value be used to indicate each bit serial number whether be the corresponding second device of the address field subcarrier serial number Include:

In the corresponding information field of the address field, being worth for the serial number of the bit of " 1 " is that the address field is corresponding The serial number of the subcarrier of second device；Or

In the corresponding information field of the address field, being worth for the serial number of the bit of " 0 " is that the address field is corresponding The serial number of the subcarrier of second device.

6. the method as described in any one of claims 1 to 5, which is characterized in that the subcarrier assignment messages frame is beacon Frame or action message frame.

7. a kind of wireless communications method characterized by comprising

Receive the subcarrier assignment messages frame for the preset channel that first device is sent；The preset channel is access point coverage area Downlink shared by fixed-bandwidth channel；The subcarrier assignment messages frame includes: address field and the address word The corresponding information field of section, wherein the quantity of the address field is at least two, and the value of the address field is the address The network address of the corresponding second device of field identifies, and the value of the information field is the corresponding second device of the address field Subcarrier distribute information；

Current second dress is obtained in the subcarrier assignment messages frame according to the network address of current second device mark Set corresponding information field；The value of the corresponding information field of the current second device is the subcarrier of the current second device Distribute information.

8. the method for claim 7, which is characterized in that the network address of the current second device of basis is identified in institute It states and obtains the corresponding information field of the current second device in subcarrier assignment messages frame and include:

The network address of value and the current second device that address field is found in the subcarrier assignment messages frame identifies Equal address field is the corresponding address field of the current second device；

According to the corresponding address field of the current second device, described current is found in the subcarrier assignment messages frame The corresponding information field of two devices.

9. the method for claim 7, which is characterized in that the subcarrier of second device distribution information includes described the The serial number of the initial subcarrier of two devices and the continuous subcarrier number of the second device；In the current second device of the basis Network address mark the corresponding information field of the current second device is obtained in the subcarrier assignment messages frame after, Further include:

Parsing the corresponding information field of the current second device is the first subfield and the second subfield；First subfield Value be the current second device initial subcarrier serial number；The value of second subfield is the current second device Continuous subcarrier number；

The subcarrier of the current second device is obtained according to the value of the value of first subfield and second subfield Serial number.

10. the method for claim 7, which is characterized in that the subcarrier distribution information of the second device includes described The subcarrier allocation vector of second device；It is distributed in the network address mark of the current second device of the basis in the subcarrier After obtaining the corresponding information field of the current second device in message frame, further includes:

According to the corresponding information field of the current second device it is worth go out the current second device subcarrier serial number； The value of the corresponding information field of the current second device is the subcarrier allocation vector of the current second device.

11. method as claimed in claim 9, which is characterized in that described according to the value of first subfield and described second The value of subfield includes: come the serial number for obtaining the subcarrier of the current second device

It is added up one by one since the value of first subfield to obtain continuous N number of serial number, the N is equal to the described second sub- word The value of section, the subcarrier serial number of the continuous N number of serial number, that is, current second device；N number of serial number includes described works as The serial number of the initial subcarrier of preceding second device；The N is the natural number more than or equal to 1.

12. method as claimed in claim 10, which is characterized in that described according to the corresponding information word of the current second device Section it is worth go out the current second device the serial number of subcarrier include:

In the corresponding information field of the current second device, it is using value " serial number of 1 " bit is as described current The subcarrier serial number of two devices；Or

In the corresponding information field of the current second device, it is using value " serial number of 0 " bit is as described current The subcarrier serial number of two devices.

13. a kind of first device of wireless communication characterized by comprising

Frame generation module, for generating the subcarrier assignment messages frame of preset channel, the preset channel is that access point covers model The channel of fixed-bandwidth shared by the downlink enclosed；The subcarrier assignment messages frame includes: address field and the address The corresponding information field of field, wherein the quantity of the address field is at least two, and the value of the address field is describedly The network address of the corresponding second device of location field identifies, and the value of the information field is corresponding second dress of the address field The subcarrier distribution information set；

14. first device as claimed in claim 13, which is characterized in that the network address of the second device is identified as medium Accessing to control address or association identification.

15. first device as claimed in claim 13, which is characterized in that the son of the corresponding second device of the address field carries The serial number for the initial subcarrier that information includes: the second device and the continuous subcarrier number of the second device are matched in wavelength-division； The corresponding information field of the address field includes: the first subfield and the second subfield, in which: the value of first subfield For the serial number of the initial subcarrier of the corresponding second device of the address field, the value of second subfield is the address word The continuous subcarrier number of the corresponding second device of section.

16. first device as claimed in claim 13, which is characterized in that the son of the corresponding second device of the address field carries The subcarrier allocation vector that information includes: the second device is matched in wavelength-division；

17. first device as claimed in claim 16, which is characterized in that each in the corresponding information field of the address field The value of a bit be used to indicate each bit serial number whether be the corresponding second device of the address field subcarrier Serial number include:

18. a kind of second device of wireless communication characterized by comprising

Frame receiving module, the subcarrier assignment messages frame of the preset channel for receiving first device transmission；The preset channel The channel of fixed-bandwidth shared by downlink for access point coverage area；The subcarrier assignment messages frame includes: address Field and the corresponding information field of the address field, wherein the quantity of the address field is at least two, the address word The value of section is that the network address of the corresponding second device of the address field identifies, and the value of the information field is the address word The subcarrier of the corresponding second device of section distributes information；

Frame processing module, for being obtained in the subcarrier assignment messages frame according to the network address of current second device mark The corresponding information field of the current second device；The value of the corresponding information field of the current second device is described current the The subcarrier of two devices distributes information.

19. second device as claimed in claim 18, which is characterized in that the frame processing module includes:

First obtains module, and the value and described current second for finding address field in the subcarrier assignment messages frame fill The address field for the network address identity equality set is the corresponding address field of the current second device；

Second obtains module, for according to the corresponding address field of the current second device, in the subcarrier assignment messages The corresponding information field of the current second device is found in frame.

20. second device as claimed in claim 18, which is characterized in that the subcarrier of the second device distributes information and includes The serial number of the initial subcarrier of the second device and the continuous subcarrier number of the second device；The second device is also wrapped Include: first information field processing module is identified for the network address in the current second device of the basis in the subcarrier After obtaining the corresponding information field of the current second device in assignment messages frame, execute:

21. second device as claimed in claim 18, which is characterized in that the subcarrier of the second device distributes information and includes The subcarrier allocation vector of the second device；The second device further include: the second information field processing module, in institute It states and the current second device is obtained in the subcarrier assignment messages frame according to the network address of current second device mark After corresponding information field, execute:

22. second device as claimed in claim 20, which is characterized in that the first information field processing module includes:

Information field parsing module is the first subfield and second for parsing the corresponding information field of the current second device Subfield；The value of first subfield is the serial number of the initial subcarrier of the current second device；Second subfield Value be the current second device continuous subcarrier number；

First subcarrier obtain module, for according to the value of the value of first subfield and second subfield to obtain State the serial number of the subcarrier of current second device.

23. second device as claimed in claim 22, which is characterized in that first subcarrier obtains module and is specifically used for:

24. second device as claimed in claim 21, which is characterized in that the second information field processing module includes:

Second subcarrier obtains module, in the corresponding information field of the current second device, will value be 1 bit Subcarrier serial number of the serial number as the current second device；Or

Third subcarrier obtains module, in the corresponding information field of the current second device, will value be 0 bit Subcarrier serial number of the serial number as the current second device.

25. a kind of wireless communication system characterized by comprising first device and second device, in which: the first device For the described in any item first devices of claim 13-17；

The second device is the described in any item second devices of claim 18-24.