CN101297570A - Multicarrier MAC using resource utilization messages - Google Patents

Abstract

Systems and methods are disclosed that facilitate dynamic regulating the number of channel, frequency, tones and the like resources occupied by nodes (e.g., access points, access terminals, etc.). The service level at the given node can be determined, and a resource using message (RUM) may be generated the service level has met or below the predetermined threshold level (e.g., acceptable service level). The RUM may indicate the number of the node selected for the subsequent use resources, and may then be transmitted to one or more other nodes.

Description

Use the multicarrier MAC of utilization of resources message

Priority request according to 35U.S.C. § 119

The application requires to submit on October 26th, 2005, the U.S. Provisional Application S/N.60/730 that is entitled as " weighted-fair that uses utilization of resources mask to carry out wireless channel is shared (WEIGHTED FAIR SHARING OF A WIRELESSCHANNEL USTNG RESOURCE UTTLTZATTON MASKS) ", 631, and submit on October 26th, 2005, the U.S. Provisional Application S/N.60/730 that is entitled as " using the utilization of resources mask that sends with the firm power spectrum density to carry out interference management (INTERFERENCE MANAGEMENTUSING RESOURCE UTILIZATION MASKS SENT AT CONSTANT POWERSPECTRAL DENSITY (PSD)) ", 727 priority, these two provisional application all are included in this by reference.

Background

I. technology

Below describe and relate generally to radio communication, relate in particular to and in wireless communications environment, reduce interference and improve throughput and channel quality.

II. background

Wireless communication system has become the prevalent means of whole world most people so as to communication.In order to meet customer need and to improve portability and convenience, it is littler and more powerful that Wireless Telecom Equipment has become.Caused increase such as the increase of mobile device disposal abilities such as cell phone to wireless network emission system demand.These systems are unlike in the such easy renewal of the cellular device of communicating by letter on it usually.Along with the development of mobile device capability, safeguard that in the mode that helps to excavate wireless device capabilities new and fully old Radio Network System is comparatively difficult through improving.

Exemplary wireless communication network (for example, adopting frequency division, time-division and sign indicating number branch technology) comprises one or more base stations that the area of coverage is provided and one or more (for example, wireless) terminals that move that can transmit and receive data in this area of coverage.Exemplary base station can send simultaneously be used to broadcast, a plurality of data flow of multicast and/or unicast services, wherein data flow is the stream of the interesting independent data that receive of portable terminal.Portable terminal in the area of coverage of this base station can receive this resultant current entrained intentionally, more than one or all data flow.Similarly, portable terminal can send data to this base station or another portable terminal.This between base station and the portable terminal or between several portable terminals communicated by letter and may be degenerated owing to channel variation and/or interference power variations.Therefore, the present technique field needs interference that helps reduce in the wireless communications environment and system and/or the method that improves throughput.

Summary

Following content has presented the simplification summary of one or more aspects so that the basic comprehension to these aspects to be provided.The not all exhaustive overview that can the anticipation aspect of this summary, and the important or key element that is not intended to identify all aspects also is not intended to portray the scope of any or all aspect.Its sole purpose is to present some conceptions of one or more aspects in simplified form as the preorder of describing more specifically that presents after a while.

According to each side, the present invention relates to provides unified technology so that help realization and honeycomb and the two benefit that is associated of Wi-Fi technology, alleviate the system and/or the method for the defective that is associated with them simultaneously for wide area drawn game field wireless communication network.For example, cellular network can be according to arranging through the deployment of planning, this is in design or can increase efficient during building network, and the Wi-Fi network normally self-organizing mode more easily dispose.The backhaul support that the Wi-Fi network also can help for access point and access terminal and provide symmetrical medium access control (MAC) channel and cellular system not to provide with wireless capability in the band.

Unified technology described herein helps symmetrical MAC to be provided and to have the backhaul support of being with interior wireless capability.In addition, the present invention helps with the flexible way on-premise network.Method described in the present invention allows performance to dispose according to this to adjust, and is to provide preferable efficient under planning or the semicircular canal situation of drawing and be not have under the situation of planning enough robustnesss are provided at this network in this deployment thus.That is, each side as herein described allows to use deployment (for example, in the cellular deployment situation), self-organizing deployment (for example, such as can be used for the Wi-Fi network design) or the two combination through planning to come on-premise network.In addition, others relate to supports to have the node of different transmission power level and realizes the minizone justice that aspect resource allocation these aspects are that Wi-Fi or cellular system do not have fully to support.

For example, according to some aspects, can help the weighted-fair of wireless channel to share by uniting the transmission that is ranked by the two use utilization of resources message (RUM) of transmitter and receiver, transmitter comes the request resource collection based on the knowing of availability to its neighbour thus, and receiver is based on a subclass of knowing allowance request channel of its neighbour's availability.Transmitter is based on knowing availability near intercepting of receiver it, and receiver is known potential possible interference by near transmitter intercepting it.According to related fields, it is that emission mode is avoided in disadvantageous (as owing to run into the receiver that the data of interference send when receiving) and the conflict of wishing that RUM can be weighted not only to indicate this node, but also indicates the unfavorable degree of this node.The RUM receiving node can utilize its received RUM with and this fact of weight, to determine appropriate response.As example, this announcement permission of weight conflicts in the mode of justice and avoids.The invention describes this technology.

According to others, RUM refusal threshold value (RRT) can be used to be convenient to determine whether that the RUM to receiving responds.For example, various parameters that the RUM that can use this to receive is included and/or information are calculated and are measured, and whether this measures the RUM that can compare with this RRT to determine this sending node and have reason to respond.According to related fields, the RUM sending node can be indicated its unfavorable degree by the number of indicating the suitable channel of this RUM, thereby makes channel number (generally speaking, these can be resource, frequency subcarriers and/or time slot) indicate disadvantageous degree.If this unfavorable degree reduces in response to RUM, then send and to be reduced to the number that it sends the channel of RUM for follow-up RUM.If unfavorable degree does not reduce, then can be follow-up RUM and send the number that increases the suitable channel of this RUM.

RUM can firm power spectrum density (PSD) send, and receiving node can adopt this RUM receive power spectral density and/or receive power estimate himself with this RUM sending node between radio frequency (RF) if channel gain to determine its emission then whether will cause interference (for example, but be scheduled on the acceptance threshold level) at this sending node place one.Therefore, may have such situation, promptly the RUM receiving node can be decoded the RUM from the RUM sending node but be determined that it will can not cause interference.When RUM receive to determine that it should obey this RUM, but it can by select fully from this resource keep out of the way or by selecting to use the transmitting power that enough reduces so that its estimation potential may interference level drop to and be lower than this and be scheduled to acceptance threshold level and carry out.Thereby, support " firmly " to disturb simultaneously with a kind of uniform way and avoid (keeping out of the way fully) and " soft " interference to avoid (power control).According to related fields, RUM can be received node and be used for determining the channel gain between receiving node and the RUM sending node so that determine whether emission based on the estimation interference that causes at this sending node place.

According on the one hand, a kind of wireless communications method can comprise: determine that the node place receives the level of service; If receiving the level of service is equal to or less than the predetermined threshold levels of the service of receiving then generates utilization of resources message (RUM); Be chosen as the number that it sends one or more resources of RUM; And one or more resources transmission RUM for selecting.

Relate to a kind of device that helps radio communication on the other hand, comprising: determination module, determine that the node place receives the level of service; Generation module is equal to or less than the predetermined threshold levels of the service of receiving then generates utilization of resources message (RUM) if receive the level of service; Select module, be chosen as the number that it sends one or more resources of RUM; And sending module, for selected one or more resources send RUM.

Another aspect relates to a kind of device that helps radio communication, comprising: be used for the device that the level of service is received at definite node place; Be used for generating under the situation of predetermined threshold levels that level in the service of receiving is equal to or less than the service of receiving the device of utilization of resources message (RUM); Be used to be chosen as the device of the number of its one or more resources that send RUM; And be used to selected one or more resources to send the device of RUM.

Relate in one aspect to a kind of machine readable media that comprises the instruction that is used for data communication again, wherein this instruction makes machine when carrying out: determine that the node place receives the level of service; If receiving the level of service is equal to or less than the predetermined threshold levels of the service of receiving then generates utilization of resources message (RUM); Be chosen as the number that it sends one or more resources of RUM; And one or more resources transmission RUM for selecting.

Relate to a kind of processor that helps data communication on the other hand, processor is configured to: determine that the node place receives the level of service; If receiving the level of service is equal to or less than the predetermined threshold levels of the service of receiving then generates utilization of resources message (RUM); Be chosen as the number that it sends one or more resources of RUM; And one or more resources transmission RUM for selecting.

In order to realize above-mentioned and relevant purpose, this or many aspects are included in the feature of hereinafter describing and particularly pointing out in the claims fully.The following description and drawings are specifically set forth the illustrative aspect of this or many aspects.Yet the sub-fraction in the variety of way of the principle that can adopt these various aspects is only indicated in these aspects, and described aspect is intended to comprise all these aspects and equivalents thereof.

The accompanying drawing summary

Fig. 1 shows to have such as a plurality of base stations that can utilize in conjunction with one or more aspects and the wireless communication system of a plurality of terminals.

Fig. 2 is the diagrammatic sketch of the method shared according to the weighted-fair that is used to use utilization of resources mask/message (RUM) to carry out wireless channel of one or more aspects described herein.

Fig. 3 shows the sequence of permitting incident according to the request of helped to the resource allocation of one or more aspects described herein.

Fig. 4 is the diagrammatic sketch of some topological structures of understanding that helps to ask to permit scheme according to various aspects.

Fig. 5 show according to present at this one or more aspect be used for method by adopting the utilization of resources message (RUM) that sends with firm power spectrum density (PSD) to manage interference.

Fig. 6 is used for generating the diagrammatic sketch that helps to provide at the wireless network that self-organizing is disposed the method for the TxRUM of flexible medium access control (MAC) and request according to one or more aspects.

Fig. 7 is used to generate the diagrammatic sketch of approved method to request that will send according to one or more aspects.

Fig. 8 is the number that is used for the subcarrier by being used to send RUM according to the disadvantageous horizontal adjustment that is associated with given node according to one or more aspects reaches fair method between each contention node a diagrammatic sketch.

The diagrammatic sketch that Fig. 9 sends according to the RxRUM that power spectral density (PSD) is constant between one or more aspects, two nodes.

Figure 10 is that the RUM that is used to according to one or more aspects send to adopt the diagrammatic sketch of constant PSD with the method for the amount of the interference that helps to estimate that first node will cause at the Section Point place.

Figure 11 shows the method that responds to through planning and/or the grouping of the Interference Control of ad hoc wireless communication environment of being used for according to various aspects.

Figure 12 is the diagrammatic sketch of method that is used to generate RxRUM according to above-mentioned each side.

Figure 13 is the diagrammatic sketch that is used for the method that the RxRUM to one or more receptions responds according to one or more aspects.

Figure 14 is the diagrammatic sketch that can combine the wireless network environment that adopts with various system and methods described herein.

Figure 15 is the diagrammatic sketch according to the device that helps RFDC of various aspects.

Figure 16 is the diagrammatic sketch that helps the device of radio communication according to the use utilization of resources message (RUM) of one or more aspects.

Figure 17 helps to generate utilization of resources message (RUM) and the weighting RUM diagrammatic sketch with the device of indicating disadvantageous level according to various aspects.

Figure 18 is to determine the diagrammatic sketch of the worst device of which node according to the relative situation that helps each node place in the comparison wireless communications environment of one or more aspects.

Specifically describe

Be used in reference to for the accompanying drawing of all similar key elements referring now to like reference numerals wherein and describe various aspects.In the following description, for the purpose of explanation, set forth each specific detail so that the thorough to one or more aspects to be provided.Yet conspicuous, these aspects can be put into practice under the situation of these specific detail not having.In other example, known structure and equipment are shown to help to describe one or more aspects with the block diagram form.

As used in this application, term " assembly ", " system " etc. are intended to refer to computer related entity or hardware, software, executory software, firmware, middleware, microcode and/or its any combination.For example, assembly can be, but be not limited to the thread of the process of moving, processor, object, executable file, execution, program and/or computer on processor.One or more assemblies can reside in the thread of process and/or execution, and assembly can be on the computer and/or be distributed between two or many computers.And each computer-readable medium that can store various data structures is from it carried out these assemblies.These assemblies can such as according to the signal with one or more packets (for example, by this signal from local system, distributed system in another component interaction and/or stride such as the data of network such as internet with an assembly of other system interaction) communicate by letter by this locality and/or remote process.In addition, the assembly of system described herein can be rearranged and/or be replenished to help realization about its described various aspects, target, advantage etc. by add-on assemble, and as skilled in the art to understand, be not limited to the accurate configuration of setting forth in the given accompanying drawing.

In addition, in conjunction with subscriber station various aspects are described here.Subscriber station also can be described as system, subscriber unit, mobile radio station, moves, distant station, remote terminal, access terminal, user terminal, user agent, subscriber equipment or user's set.Subscriber station can be that cell phone, cordless telephone, Session Initiation Protocol phone, wireless local loop (WLL) are stood, PDA(Personal Digital Assistant), have the portable equipment of wireless connections ability or be connected to other treatment facility of radio modem.

In addition, various aspects as herein described or feature can use standard program and/or engineering to be embodied as method, device or goods.Term used herein " goods " is intended to comprise can be from the computer program of any computer readable device, carrier wave or medium access.For example, computer-readable medium includes but not limited to that magnetic storage apparatus (for example, hard disk, floppy disk, magnetic stripe ...), CD (for example, compact disk (CD), digital versatile disc (DVD) ...), smart card and flash memory device (for example, card, bar, key drive ...).In addition, various storage medium as herein described can represent to be used for one or more equipment and/or other machine readable media of stored information.Term " machine readable media " can include but not limited to: wireless channel and various other medium that can store, comprise and/or carry instruction and/or data.Should be appreciated that word used herein " exemplary " is used for expression " as example, example or illustration ".It is not necessarily to be interpreted as being preferable over or to be better than others and design that this paper is described as any aspect of " exemplary " or design.

Should be appreciated that " node " can be to access terminal or access point as used in this, and each node can be receiving node and transmitting node.For example, the reception chain that each node can comprise at least one reception antenna and be associated, and at least one transmitting antenna and the emission chain that is associated.In addition, each node can comprise one or more processors carry out in order to realize described herein arbitrarily or the software code of all methods and/or agreement, and comprise that memory stores data and/or the computer-readable instruction that is associated with the whole bag of tricks described herein and/or agreement.

Referring now to Fig. 1, show wireless network communications system 100 according to the various aspects that present at this.System 100 can comprise in one or more sectors such as one or more base stations 102 (for example, honeycomb, Wi-Fi or self-organizing etc.) a plurality of nodes, these a plurality of nodes are each other and/or and such as reception between one or more other nodes such as 104, transmission, the relay wireless communications signal of accessing terminal.As skilled in the art to understand, each base station 102 can comprise transmitter chain and receiver chain, each chain can comprise again with signal and transmits and receives a plurality of assemblies (for example, processor, modulator, multiplexer, demodulator, demultiplexer, antenna etc.) that are associated.Access terminal 104 can for example be cell phone, smart phone, laptop devices, handheld communication devices, handheld computing device, satellite radio devices, global positioning system, PDA and/or any miscellaneous equipment of being suitable for communicating by letter on wireless network.

It is in order to help the understanding to each system described herein and/or method that following discussion is provided.According to various aspects, can distribute (for example) node weights to emission and/or receiving node, wherein each node weights is the function of the number of the stream supported of this node." stream " expression enters or spreads out of the transmission of a node as used in this.The weight of all streams that total weight of this node can be passed this node by adding up is determined.For example, constant bit rate (CBR) stream can have predefined weight, and data flow can have and proportional weight of its type (for example, HTTP, FTP etc.) etc.In addition, each node can be assigned to the stream weight that can add to each node and thinks that each node provides the predetermined static weight of extra priority.Node weights also can be dynamic and reflect the present situation of the stream that this node is entrained.For example, this weight can be corresponding to the poorest throughput of just carrying the stream of (receiving) at this node place.In fact, this weight is represented the disadvantageous degree that this node is just experiencing and be used to carry out fair channel between one group of interfering nodes of contention public resource to insert.

Request message, allowance message and data send and can be subjected to power control, yet node still may experience and cause the unacceptable excess interference of its Signal Interference and Noise Ratio (SINR) level.Not conform to the low SINR that needs in order alleviating, can to utilize utilization of resources message (RUM), this message can be receiver side (RxRUM) and/or transmitter-side (TxRUM).When the interference level on the expectation channel at a receiver surpassed a predetermined threshold levels, this receiver can be broadcasted a RxRUM.This RxRUM can comprise tabulation and the node weights information that this receiver wishes to disturb on it grant channel that reduces.In addition, power spectral density (PSD) that RxRUM can be constant or firm power send.The node (for example, with this RxRUM of emission the transmitter of receiver contention) of this RxRUM of decoding can respond to this RxRUM.For example, each node that listens to this RxRUM accordingly from the channel gain of this receiver (for example can calculate it, the PSD that receives by measurement also utilizes knowing of the constant PSD that sends this RxRUM), and can reduce its corresponding transmission power level to alleviate interference.RxRUM recipient even can select to go up indicated channel and keep out of the way fully from this RxRUM.Avoid in order to ensure disturbing, guarantee that promptly the justice of all nodes acquisition launching opportunities is shared, can in this RxRUM, comprise weight in the mode of justice.The weight of one given node can be used to calculate the justice of the resource that will distribute to this node and share.According to example, be used to send and/or the threshold value of reacting RUM can be determined based on the behavior of system.For example, avoid in the system of type, can be each emission and send a RUM in pure conflict, and listen to any node of this RUM can be by on this channel that is associated, not sending response.

Be applicable to the channels bits mask of which channel if comprise this RUM of indication among this RUM, the additional dimension that then can realizing conflicts avoids, this low volume data and do not wish that or not can be useful that transmitter is kept out of the way from whole channel fully of on receiver need the part at this channel, being ranked.This respect provides the more granularity of refinement on collision avoidance mechanism, this is important for bursts of traffic.

When a transmitter can not be asked enough resources (for example, listening under the situation that forces its one or more RxRUM that keep out of the way on most of channels at a transmitter), this transmitter can be broadcasted TxRUM.This TxRUM can broadcast before reality sends, and had the approaching adjacent reception machine that disturbs with notice.This TxRUM can notify it to intercept all interior receivers of scope: based on each RxRUM that transmitter has listened to, this transmitter believes that it has the most proper claim for bandwidth.This TxRUM portability is about the information of the weight of this transmitter node, and this information can be used for calculating its corresponding resource share by each adjacent node.In addition, TxRUM can send with the proportional PSD of power level or the transmitting power that send data.Will be recognized that owing to having only the affected node of potential possibility need know the situation of transmitter, so need not to send TxRUM with constant (for example, height) PSD.

RxRUM carries that all transmitters of being intended in " intercepting " scope (for example, no matter whether they send data to this receiver) are passed on this receiver because the weight information of the degree of needing badly from the interference of other transmission and to bandwidth.This weight can be represented disadvantageous degree and be bigger and littler when unfavorable situation is light slightly when this receiver is more unfavorable.As example, if throughput is used to measure disadvantageous degree, then a possible relation can be represented as:

R wherein _TargetRepresent required throughput, R _ActualBe the current goodput that reaches, and the value through quantizing of Q (x) expression x.When single stream being arranged at this receiver place, R _TargetCan represent the minimum throughout that this stream is required, and R _ActualCan represent the average throughput that this stream has reached.Notice that the weight of representing the unfavorable higher value that doubles is an agreement problem.The weight resolution logic adopts similar fashion, as long as through suitable modification, just can utilize the weight of higher value to represent the disadvantageous agreement that degree is lighter.For example, can use the goodput and the ratio (inverse of above example shown) of target throughput to calculate weight.

When existing, this receiver place has potential different R _TargetDuring a plurality of stream of value, then receiver can be selected based on worst stream weight to be set.For example:

Wherein j is the stream index at this receiver place.Also can carry out such as with weight based on stream throughput with wait other option.To note, to be used for the functional form of weight purely in order illustrating in more than describing.Weight can various mode and is used difference outside the throughput to measure and calculate.According to related fields, receiver can determine whether it has the uncompleted data from transmitter (for example, transmitter).Having received a request or its at it, to have received under the situation of unowned one previous request promptly be like this.In this case, this receiver can be at R _ActualBe lower than R _TargetThe time send RxRUM.

The TxRUM portability is passed on the information of its single position that whether exists.Transmitter can be provided with this TxRUM by carrying out predetermined a series of actions.For example, transmitter can be collected its RxRUM that listens to recently, has sent the RxRUM that also comprises under the situation of a RxRUM from this self receiver already at himself receiver.If this transmitter is not also received any RxRUM, then it can send a request to its receiver not sending under the situation of TxRUM.If only RxRUM is from the receiver of himself, then this transmitter can send a request and a TxRUM.

Perhaps, if this transmitter has received several RxRUM that comprise from the RxRUM of himself receiver, then transmitter can be based on each RxRUM weight with these RxRUM orderings.If the receiver of this transmitter self has highest weighting, then transmitter can send TxRUM and request.Yet if the receiver of this transmitter self is not a highest weighting, this transmitter need not to send request or TxRUM.At the receiver of transmitter self is all under the situation of one of several RxRUM of highest weighting, and then this transmitter can send TxRUM and request by the probability of 1/ (all RxRUM on highest weighting).According on the other hand, if this receiver has received one the RxRUM that does not comprise from himself receiver, then transmitter can not send request.Note the whole sequence that above-mentioned RxRUM handles even put and in having the situation of TxRUM, not use.In this case, if being launched the machine node, logic is used for determining whether sending request and will sending really, so at which channel to its receiver.

Based on request and/or the TxRUM that receiver listens to, this receiver can determine to permit a given request.When transmitter was not also made request, this receiver need not to send permitted.If this receiver has listened to TxRUM, but wherein neither one is from the transmitter of its service, and then this receiver does not send allowance.If this receiver only listens to the TxRUM from the transmitter of its service, then it can determine to make allowance.If this receiver has listened to from the transmitter of himself and from the TxRUM that is not its transmitter of serving, then have two results.For example, if the operation of transmission rate on average is R at least _Target, then this receiver will not be permitted (for example, its force its transmitter static).Otherwise this receiver is permitted with the probability that is defined as 1.0/ (the TxRUM sum that is listened to).If this transmitter is allowed, then transmitter sends and can be received the Frame that machine receives.In case successfully send, transmitter upgrades the Mean Speed that this is connected with the receiver both.

According to others, can programme is ranked action to realize impartial service grade (EGOS) or to be used to manage a plurality of transmitters and/or to the fairness between the stream of receiver and other scheme of service quality.What the device that is ranked can use that it knows decides which node that is ranked by the received speed of its partner node.Yet, the interference rule that the medium access channel that this device that is ranked can be observed operation is thereon forced.Particularly, this device that is ranked can be obeyed the RUM that it listens to from its neighbour.For example, on the forward link, the device that is ranked on the access point (AP) can be to all (AT) transmission requests that access terminal that have at its traffic, unless it is blocked by RxRUM.AP can receive the one or more allowances of returning from these AT.If AT is substituted by a competition TxRUM, then it can not send allowance.AP can be ranked according to the algorithm that is ranked subsequently and have the AT of limit priority, and can launch.

On reverse link, each AT that has traffic to send can ask to AP.If AT is blocked by RxRUM, then it will not send request.AP is ranked according to the algorithm that is ranked and has the AT of limit priority, observes any TxRUM that listens at last time slot simultaneously.AP sends to AP then and permits.In case receive allowance, AT just sends.

Fig. 2 is a diagrammatic sketch of carrying out the method 200 that the weighted-fair of wireless channel is shared according to the use utilization of resources mask/message (RUM) of one or more aspects described herein.202, make definite thereon about the number that node (for example, access point, access terminal etc.) will the preferred channel that sends.This determine can be based on for example, the interference of being experienced on the demand that is associated with the data that will send of specified rate, this node or any other suitable parameter (for example, stand-by period, data transfer rate, spectrum efficiency etc.).204, can select one or more channels to reach requisite number purpose channel.Preferably the channel selection is carried out on available channel ground.For example, can before occupied channel in last transmitting time section, select known to the available channel of this last transmitting time section.206, can send request to these selected channels.This request can comprise that transmitter (for example, transmitting node etc.) wants to send the bitmask of the preferred channel of data thereon, and can send to receiver (for example, receiving node, mobile phone, smart phone, Wireless Telecom Equipment, access point etc.) from transmitter.This request can be the request to more than first channel that does not get clogged in nearest time slot, can be the request to more than second channel under the situation of this more than first channel deficiency for data send.206 request messages that send can be in addition be subjected to power control to guarantee that the receiver place has desirable reliability level.

According to others, for the number of the desirable channel of a given transmission determine can be the function of the weight that is associated with this node, the weight that is associated with other node of request channel function, can be for the function of the number of the channel that sends usefulness or the previous combination in any of factor.For example, weight can be the function etc. of level of the interference of function, this node place experience through the number of the stream of this node.According to further feature, channel is selected to comprise each channel is divided into one or more set, and can be based in part on the disabled utilization of resources message (RUM) that receives of one or more channels in indication one channel set.Can assess this RUM to determine a given channel whether available (for example, not identified) by this RUM.For example, under not being listed in the situation of this RUM, a given channel can make determining that this channel can use.Even another example is to have received that RUM at a channel thinks that also this channel can use, but the announcement weight of this channel is lower than the weight of announcing among the RUM that receiver sent by this node.

Fig. 3 shows the sequence of the request-allowance incident according to helped to the resource allocation of one or more aspects described herein.Drawn and comprised first sequence of events 302 that sends to the request of receiver from transmitter.In case receive this request, receiver just can send the allowance message of a whole or subclass of permitting channel that this transmitter is asked to this transmitter.This transmitter can send data subsequently on part or all of channel of permitting.

According to related fields, sequence of events 304 can comprise the request that sends to receiver from transmitter.This request can comprise that transmitter wishes thereon to send to receiver the tabulation of the channel of data.This receiver can send to this transmitter subsequently permits message, and a whole or subclass of this message indicative of desired channel is allowed.This transmitter can send pilot frequency information to this receiver subsequently, in case receive this pilot frequency information, this receiver just can send it back rate information to this transmitter, to help to alleviate undesirable low SINR.In case receive this rate information, transmitter just can and carry out data with the transmission rate of appointment on the channel of being permitted and send.

According to related fields, when a transmitter can not be asked enough resources (for example, listening under the situation of the one or more RxRUM that taken most of transmitter available channels at a transmitter), this transmitter can be broadcasted TxRUM.This TxRUM portability is about the information of the weight of this transmitter node, and this information can be used for calculating its corresponding resource share by each adjacent node.In addition, TxRUM can send with the proportional PSD of power level that sends data.Will be recognized that owing to only need the affected node of potential possibility know the situation of transmitter, therefore need not to send TxRUM with constant (for example, height) PSD.

Can be in view of the sequence of may compulsory a plurality of constraints during communication event coming execution incident 302 and 304.For example, transmitter can be asked any channel of also not stopped by RxRUM at last time slot.The channel of being asked can be arranged by the order of the successful channel in the preferred transmission cycle recently.Do not having under the situation of enough channels, thereby transmitter can ask other channel to obtain its fair share to the TxRUM of the contention of other channel by sending in order to declaration.In view of the RxRUM that has listened to, the fair share of channel can be determined according to contention neighbour's (for example, node) number and weight subsequently.

Allowance from receiver can be the subclass of listed channel in the request.Receiver can be endowed the authority of office and present high interference levels to avoid channel in nearest transmission.Under the situation that does not have enough grant channels, receiver can increase channel (for example, until the fair share of this transmitter) by sending one or more RxRUM.In view of (for example, the receiving) TxRUM that has listened to, the fair share to channel of this transmitter can be determined by number and the weight of for example assessing adjacent node.

When sending, send data on all of the channel that transmitter can be permitted or the subclass in permitting message.In a single day transmitter listens to RxRUM, just can reduce the transmitting power on some or all channels.Listen on same channel at transmitter in the situation of allowance and a plurality of RxRUM, transmitter can send by probability reciprocal.For example,, listen to an allowance and three RxRUM, then probability transmission that transmitter can 1/3 grade etc. (for example, transmitter will use the probability of channel be 1/3) if for individual channel.

According to others, can distribute excess bandwidth according to the shared scheme that is not subjected to above constrained.For example, the aforesaid weighted-fair that can help resource based on being ranked of weight is shared.Yet, in having the situation of excess bandwidth, need not constraint resource and distribute (for example, more than minimum fair share).For example, can consider a kind of situation, wherein having full buffer and having separately is that two nodes of 100 weight (for example, corresponding to 100kbps flow rate) are just being shared a channel.In this case, these two nodes can be shared this channel equably.If the channel quality that their experience change, then each in these two nodes can be allowed for example 300kbps.Yet it is desirable may only giving node 1200kbps, so that the share of node 2 is promoted to 500kbps.That is, in this case, it may be desirable sharing any excess bandwidth in some inequitable mode, so that realize bigger sector throughput.Can plain mode expansion weight mechanism share to help unfairness.For example, except that weight, each node also can have the notion of its speed of distributing, and this information can be associated with the service that AT is bought.Node can constantly upgrade its Mean Speed (with a certain suitable interval) and send RUM when its average throughput is lower than the speed of this distribution will not compete the excessive resource of the speed of being distributed above it to guarantee node, and it can be assigned with in other shared scheme subsequently.

Fig. 4 is the diagrammatic sketch to some topologys of the understanding of request-allowance scheme of helping according to various aspects.First topology 402 has very approaching three links (A-B, C-D, E-F), and wherein each node A-F can listen to the RUM from all other nodes.Second topology 404 has three links of chain, and intermediate line link (C-D) interference two outer links (A-B and E-F), and these two outer links do not disturb each other mutually.RUM can be simulated so that the scope of RUM is two nodes according to this example.The 3rd topology 406 comprises three links (C-D, E-F and G-H) that disturb and can listen to RUM each other each other at right-hand side.The single link (A-B) in left side is interfering link (C-D) only.

According to each example,, below the performance of three systems has been described in table 1 for above topology.In " perfect information " situation, suppose RxRUM and have bitmask and the availability of the TxRUM of weight with bitmask and weight.In " partial information " situation, suppose RxRUM and have weight but do not have the TxRUM of bitmask with bitmask and weight.At last, in " RxRUM separately " situation, do not send TxRUM.

	Perfect information (RxRUM+TxRUM bitmask)	Partial information (RxRUM+TxRUM weight)	Independent RxRUM
				Topology
1	Convergence: 4.6 cycle AB=0.33 CD=0.33 EF=0.33	Convergence: 9.1 cycle AB=0.328 CD=0.329 EF=0.325	Convergence: 10.3 cycle AB=0.33 CD=0.33 EF=0.33
				Topology 2	Convergence: 3.8 cycle AB=0.5 CD=0.5 EF=0.5	Convergence: 5.4 cycle AB=0.5 CD=0.5 EF=0.5	Convergence: AB=0.62 CD=0.36 EF=0.51 never
Topology 3	Convergence: 5.5 cycle AB=0.67 CD=0.33 EF=0.33 GH=0.33	Convergence: 9.3 cycle AB=0.665 CD=0.33 EF=0.33 GH=0.33	Convergence: AB=0.77 CD=0.21 EF=0.31 GH=0.31 never

Table 1

As seen from Table 1, the partial information motion can realize the fair share of weight with less time-delay in convergence.The convergence digital display shows that this scheme converges to the periodicity that stable allocation spent of available channel.Subsequently, each node can continue to utilize these same channels.

Fig. 5 be according to present at this one or more aspect be used for by adopting the utilization of resources message (RUM) that sends with firm power spectrum density (PSD) to manage the diagrammatic sketch of the method 500 of interference.Request message, allowance message and transmission can be subjected to power control, yet node still may experience and cause the unacceptable excess interference of its Signal Interference and Noise Ratio (SINR) level.In order to alleviate undesirable low SINR, can utilize utilization of resources message (RUM), this message can be receiver side (RxRUM) and/or transmitter-side (TxRUM).When the interference level on the expectation channel at a receiver surpassed a predetermined threshold levels, this receiver can be broadcasted RxRUM.RxRUM can comprise tabulation and the node weights information that this receiver wishes to disturb on it channel that reduces.In addition, the power spectral density (PSD) that RxRUM can be constant sends." monitoring " can be by stopping its transmission or coming this RxRUM is responded by reducing transmitting power to the node of this RxRUM transmitter of the receiver contention of this RxRUM of emission (for example, with).

For example, in the self-organizing of radio node was disposed, the Carrier interference ratio on some nodes (C/I) may be undesirably low, and this may hinder and succeed in sending up.Will be recognized that the interference level that is used for calculating C/I can comprise noise, thereby make C/I can be expressed as C/ (I+N) similarly, wherein N is a noise.In this case, receiver can be by asking other contiguous node or reducing its corresponding transmitted power or keep out of the way fully from indicated channel and manage interference.502, can generate indication to the channel (for example, in multichannel system) that presents the C/I that is lower than first predetermined threshold.504, can send and comprise which channel of indication presents the message of the information of wanting C/I.For example, first node (for example, receiver) can be broadcasted RUM together with the bitmask that comprises the information of indicating the channel with desirably not low C/I.This RUM can send with the known constant PSD of all nodes in this network in addition.By this way, having the node that changes power level can identical PSD broadcasting.

506, this message (for example, RUM) can be received by other node.508, in case receive this RUM, Section Point (for example, transmitter) can utilize the PSD that is associated with this RUM to calculate radio frequency (RF) distance (for example, channel gain) between himself and this first node.One given node can change according to this RF distance the reaction of this RUM.For example, can be in of the comparison of this RF distance of 510 execution with second predetermined threshold.If this RF distance is lower than this second predetermined threshold (for example, this first node and this Section Point are close to each other), then 512, this Section Point can stop at any further transmission on the channel indicated among this RUM to alleviate interference.Perhaps, if this Section Point and this first node mutual distance are enough far away (for example, when the distance of the RF between them when 510 compare is equal to or greater than this second predetermined threshold), then 514, if Section Point can utilize this RF range information to continue with this Section Point of prediction that emission on the channel indicated in this RUM will cause at this first node place so and owing to the amplitude of the interference of this Section Point.516, the interference level of being predicted can be compared with the 3rd predetermined threshold levels.

For example, the 3rd predetermined threshold can be to disturb heat to make an uproar than the standing part of (IOT) level (for example, approximate 25% of the target IOT of 6dB or some other threshold levels) as the target of the interference noise that records on common bandwidth and the ratio of thermal noise power.520, if the interference of being predicted is lower than this threshold level, then Section Point can continue to launch on the channel indicated in this RUM.If yet the interference of being predicted is determined to be equivalent to or greater than the 3rd predetermined threshold levels, 518, Section Point can reduce its transmit power level and be lower than the 3rd threshold level until the interference of being predicted.By this way, single message or RUM can be used to indicate the interference on a plurality of channels.By making interfering nodes reduce power, affected node (for example, receiver, access terminal, access point etc.) can on the subclass of these a plurality of channels, successfully receive bit, and the node that reduces its transmit power level also can be allowed to continue its corresponding emission.

With reference to Fig. 6 and 7, can help flexible medium access control about other receiver rough sledding mode how and one or more transmitter communications by allowing a receiver to avoid pattern also to measure it with the conflict of not only being partial to emission.In third generation honeycomb MAC, can alleviate the demand that the interference of striding the sub-district is avoided by adopting through the planning deployment scheme.Honeycomb MAC generally realizes space-efficient (bit/unit are), is expensive and consuming time but dispose through planning, and may be suitable for the focus deployment.On the contrary, deployment has been added few restriction, but be that cost has realized comparing and dispose with cellular system cost and the time that wlan system is associated and saves will in MAC, make up the interference robust that strengthens such as wlan system based on 802.11 standard families.For example, 802.11 families use the MAC that inserts (CSMA) based on carrier sense multiple.CSMA fundamentally is a kind of " intercepting before the transmission " method, and wherein the node of contention transmission must at first " intercept " these medium, determines its free time, also follow before sending subsequently and keep out of the way agreement.Carrier sense MAC can cause relatively poor utilance, limited fair control and the influence that is subject to hiding and exposed node.Dispose cellular system and the two defective that is associated of Wi-Fi/WLAN system in order to overcome with planning, can adopt synchronization control channel (for example to send with reference to Fig. 6 and 7 described each side, send request, permit, pilot tone etc.), effective use of RUM (for example, receiver can send RxRU M when a receiver wishes to interfere transmitter to keep out of the way, transmitter can send TxRUM so that its target receiver and know intention that it will send etc. with the receiver that its generation is disturbed), and by reusing improved control channel reliability (for example, making a plurality of MUM to be decoded simultaneously) etc. at this receiver place.

According to Partial Feature, RxRUM can come weighting with the coefficient of the unfavorable degree of this receiver of indication when serving its transmitter.Jamming transmitter can use it to listen to this value true and weight that is associated with this RxRUM of RxRUM to determine next action subsequently.According to an example, when receiver receives single stream, this receiver can

$\frac{\mathrm{RST}}{R_{\mathrm{actual}}}<T,$

The time send RxRUM, wherein RST (RUM sending threshold value) is the throughput objective of this stream, R _ActualBe to be calculated as short-term rolling average () the actual throughput that reaches for example, by one pole HR filter etc., and T is this ratio contrasts comparison with it a threshold value.If this receiver can not be at a particular time-slot its transmitter that is ranked, then the speed of this time slot can be assumed that 0.Otherwise in the speed that this time slot reached is the sample that can be fed to this average filter.Threshold value T can the unit of being set as 1 so that, just generate and send this weight no matter when as long as this goodput drops to below the target throughput.

If transmitter decodable code RxRUM message then it can " monitor " RxRUM.If transmitter is estimated the interference that it will cause at this RxRUM transmitter place and is lower than RUM refusal threshold value (RRT) that then it just can randomly ignore this RxRUM message.In instant MAC design, Rx/Tx RUM, request and allowance can send lower to guarantee the interference effect of this control channel on the control channel with low-down reuse factor (for example, 1/4 or littler).Transmitter can be analyzed its RxRUM collection that has listened to, if and be the RxRUM of highest weighting from the RxRUM that its target receiver listens to, then this transmitter can send to have to all receivers that can listen to this transmitter (receiver that for example, comprises himself) and indicate it to win this " contention " and be authorized to use the request of the TxRUM of this channel.Below more specifically other condition that sends the processing of a plurality of RxRUM of TxRUM, equal weight, a plurality of TxRUM processing of request etc. has been described with reference to Fig. 6 and 7.The contention that this RxRUM weight and transmitter place corresponding action allow to determine is set resolves, utilance and the weighted-fair that has allowed to improve shared medium by being provided with of RST shared thus.Outside the RST that the probability that is sent out away of control RxRUM is set, the setting of RRT can help to control this system avoids pattern work with conflict degree.

About RST,, RST can be adopted so that can realize that higher system throughput quantitative analysis calls collision avoidance protocol or send agreement simultaneously based on a specific user being disposed which agreement according to the viewpoint of system effectiveness.According to the viewpoint or the service of delay zero tolerance of peak rate, it is that cost is come bursty data to send accessible higher speed simultaneously than use that the user can be allowed to sacrificial system efficient.In addition, the fixed rate traffic channel of some type (for example, control channel) can require to reach a specific throughput and RST can correspondingly be set.In addition, some node may have higher traffic requirement owing to the polymerization of Bulk Call.Especially true under the situation near the node of tree root when in tree-like framework, using a wireless backhaul and a receiver being ranked.

A kind of definite fixedly method of RST is based on the forward link peripheral spectrum efficient that reaches in the planning honeycomb system RST is set.Cell edge spectrum efficiency indication sends and neighbour's throughput that edge customer can be realized in cellular system when being always out to a given user at BTS.This is poor unlike the cell edge throughput in the planning honeycomb system in order to ensure the throughput under the transmission situation simultaneously, this can be used to be toggled to conflict and be avoided the conversion of pattern to improve throughput (for example, owing to use the accessible throughput of sending mode simultaneously).According to further feature, RST can be different (for example, the user can subscribe the service of the varying level that is associated with different RST etc.) for different user.

Fig. 6 is used for generating the diagrammatic sketch that helps to provide at the wireless network that self-organizing is disposed the method 600 of the TxRUM of flexible medium access control (MAC) and request according to one or more aspects.TxRUM can notify all receivers in the scope of intercepting: based on each RxRUM that a transmitter has listened to, this transmitter believes that oneself has claim most to bandwidth.TxRUM carries the information of the single position of its existence of indication, and transmitter can be provided with the TxRUM position with following mode.

602, transmitter can determine whether it (for example listens to, in predetermined monitor period etc.) one or more RxRUM are (for example, suppose that A is just communicating by letter with B and disturb with C and D, then A can monitor the RxRUM from B, C and D, wherein B is its receiver), if having sent a RxRUM (that is, if B has sent in running the example), himself receiver comprises RxRUM from himself receiver.As described herein, " node " can be to access terminal or access point, and can comprise Receiver And Transmitter both.Therefore use such as " transmitter " and terms such as " receivers " in this description should be interpreted as " when a node plays transmitter " and " when a node plays receiver " respectively.If transmitter does not also receive any RxRUM, then 604, it sends request to its receiver under the situation that does not send TxRUM.If this transmitter has received at least one RxRUM,, can about whether receive RxRUM from the receiver (for example, the receiver at this transmitter node place) of this transmitter self and make definite then 606.If no,, can make the decision of the request of forbidding sending TxRUM and being associated then 608.

If 606 places are defined as certainly,, can whether be that unique RxRUM that has listened to makes further and determining about the RxRUM of the receiver that is received from this transmitter self then 610.If so, then 612, transmitter can send TxRUM and the request that will launch.If this transmitter has received a plurality of RxRUM that comprise from the RxRUM of himself receiver, then 614, transmitter can be based on the weight that is associated with each RxRUM ordering.616, the highest weighting (for example, maximum horizontal is unfavorable) that can whether have among all RxRUM that receive about the RxRUM of the receiver that is received from this transmitter self is made definite.If so, then 618, this transmitter can send the TxRUM that will launch and ask both.If 616 determine to negate that then 620, this transmitter can forbid launching TxRUM and request.This transmitter receives from the RxRUM of himself receiver and one or more other RxRUM and all has in the situation of equal weight therein, this transmitter can 1/N probability send TxRUM and request, wherein N is the number with RxRUM of highest weighting.On the one hand, the logic of Fig. 6 can be used under the situation of having only request without any TxRUM.That is, RxRUM controls a node and whether can send request to a specific resources.

" unfavorable " can be confirmed as for example function of the ratio of desired value and actual value for a given node as used herein.For example, when the function of unfavorable other parameter of being wished higher value by tolerance for throughput, spectrum efficiency, data transfer rate or some, then be in when unfavorable when this node, actual value will be lower than this desired value relatively.In this case, indicating the weighted value of the disadvantageous level of this node can be the function of the ratio of this desired value and actual value.Unfavorable based on parameter when being hoped lower (for example, the stand-by period), can utilize the inverse of the ratio of this desired value and actual value to generate weight.As used herein, the node that is described to have with respect to another node " preferable " situation can be understood that to have lighter unfavorable level (node that for example, has preferable situation has less interference, less stand-by period, more High Data Rate, more high-throughput, higher spectrum efficiency etc. than another node of comparing with it).

According to an example, transmitter A and transmitter C can be simultaneously send (for example, at the appointed time send according to transmitter wherein and synchronized multimedia access control scheme that receiver sent in other fixed time) to receiver B and receiver D respectively.Receiver B can determine and/or have the interference of the scheduled volume that is experiencing, and can be to sending RxRUM such as transmitters such as transmitter A and transmitter C.Because receiver D and receiver B send at one time, so receiver D need not to intercept RxRUM.This example further, in case listen to RxRUM from receiver B, transmitter C can assess the situation as receiver B indicated among the RxRUM, and himself situation (may be for C known or by RxRUM announcement that D sent) can be compared with the situation of receiver B.On this basis relatively, transmitter C can take some actions.

For example, just experiencing the definite of the interference lower than receiver B degree based on transmitter C, transmitter C can be by forbidding that sending the request that will launch keeps out of the way.In addition or as an alternative, transmitter C can assess or determine that it has caused at receiver B place what disturb (for example, in the RxRUM from receiver is situation with identical or constant power spectral density transmission).This determine to comprise estimation to the channel gain of receiver B, select transmit power level and determine from transmitter C should selected transmit power level the level of the emission interference that will cause at receiver B place whether surpass the acceptable threshold interference level of being scheduled to.Determine that based on this transmitter C can select to be equal to or less than the power level emission of previous transmit power level.

Under the essentially identical situation of situation of the situation (for example) of transmitter C and receiver B about disadvantageous levels such as resource shortage, interference, the weight that the RxRUM that transmitter C can assess and/or handle with it has listened to is associated.For example, to have weight be 4 RUM of 3,5,5 and 5 if transmitter C has listened to, then monitor from the RxRUM of receiver B and have a weight 5 (for example, having the weight of the heaviest weight that equals all RxRUM that transmitter C listens to), then C will send request with probability 1/3.

Fig. 7 show according to one or more aspects be used to generate to send to the request approved method 700.702, request and TxRUM such as (for example, during predetermined monitor period) that receiver can estimate that it has monitored recently or received.If also do not receive request, then 704, receiver can forbid sending allowance message.If received at least one request and TxRUM,, can whether make definite about this TxRUM that receives from the transmitter that this receiver is served then 706.If not, then 708, receiver can forbid sending allowance.If then 710, this receiver can determine whether the transmitter that all TxRUM that receive serve from this receiver.

If 710 be defined as certainly, then can generate and permit and send it to one or more request transmitters 712.If 710 be defined as negate and this receiver has received from the TxRUM of himself transmitter and the TxRUM that adds the transmitter of not serving from this receiver, then 714, can be about the operation of transmission rate on average whether more than or equal to R _TargetMake definite.If the operation of transmission rate is on average more than or equal to R _Target, then 716, this receiver can forbid permitting institute's requested resource.If for not, then 718, receiver can probability 1/N sends permits, and wherein N is the number of the TxRUM that receives.On the other hand, TxRUM can comprise with RxRUM in the same weight and when listening at least one from one of its transmitter and during from a plurality of TxRUM of another transmitter, then whether send and make allowance by one of its transmitter based on TxRUM with highest weighting.Have under the fair situation of the TxRUM of a plurality of highest weighting (comprising a TxRUM) from one of its transmitter, can send allowance by probability m/N, wherein N is the number of the TxRUM of the highest weighting that listens to, and m is the number from the transmitter of this receiver.

According to related fields, receiver can be termly and/or is constantly evaluated it and whether have uncompleted data from transmitter.It promptly is like this having received a current request or received under the situation of previous unendorsed request at it at receiver.In arbitrary situation, this receiver can send out RxRUM, as long as average transmission rate is lower than R _TargetGet final product.In addition, based on the allowance to transmitter requests, this transmitter can send a Frame that can be received by this receiver.If there are the right uncompleted data of this transmitter-receiver, the renewable Mean Speed information that should be connected of this transmitter and this receiver then.

Fig. 8 is being used for by reach the diagrammatic sketch of the method 800 of justice between each contention node for its number that sends the channel of RUM according to the disadvantageous horizontal adjustment that is associated with given node according to one or more aspects.As above described about previous accompanying drawing, RxRUM is issued with the indication receiver and is just experiencing relatively poor communication conditions and wishing to reduce its interference of being met.RxRUM comprises the weight of the disadvantageous degree quantification that this node is just being experienced.According to one side, weight can be set as and equal the RST/ average throughput.Here, RST is the desirable average throughput of this node.When a transmitting node listened to a plurality of RxRUM, it can utilize corresponding weights to solve contention between them.Start from the receiver of this transmitter self if having the RxRUM of highest weighting, then it can determine emission.If not, then this transmitter can be forbidden emission.

TxRUM is launched machine and sends emission in order to declare to approach, and has two purposes.At first, this TxRUM makes receiver know that its RxRUM has won local contention, the emission so it can be ranked.Secondly, this TxRUM notifies other adjacent reception machine approaching interference.When system supported a plurality of channel, this RUM can carry bitmask outside weight.The channel that this bitmask indicates this RUM to be suitable for.

Owing to can being impelled, the node that receives this RxRUM forbids emission, so RxRUM allows node to remove the interference that it is right after the neighbour.Though weight allows fair contention (for example, have maximum disadvantageous node and win), having multi-channel MAC can provide another degree of freedom.Node can be the number of its channel that sends RxRUM can be based on its unfavorable degree so that have the node of extreme difference history and catch up with quickly.When having improved its situation when these RxRUM successes and in response to the transmission rate that this this node receives, this node can be reduced to its number that sends the channel of RxRUM.If because than serious congestion, RUM does not have success and throughput not to improve at first, then this node can increase to its number that sends the channel of RUM.In very congested situation, node may become very unfavorable and can be all channels and send RxRUM, deteriorates to the single carrier situation thus.

According to this method,, can determine the unfavorable level of a node and can generate RUM with other this unfavorable level of node indication in intercepting scope 802.For example, this unfavorable level can be determined to be in that this node place receives may be subjected to function such as the level of the service of various parameter influences such as stand-by period, IOT, C/I, throughput, data transfer rate, spectrum efficiency.804, may be selected to be the number that it sends the channel of RUM, this can with unfavorable being on close level (for example, unfavorable more, then channel number is many more).Can be channel 806 and send RUM.Whether also can evaluate unfavorable situation with definite this node again in 808 service quality (QoS) that can measure this node improves.Based on measured QoS,, be adjustable as the number that it sends the channel of follow-up RUM 810.For example, if the QoS of this node does not improve or worsens, then can increase to the number of its channel that sends follow-up RUM to improve the level of the service that receives at this node place 810.If the QoS of this node improves, then 810, the number that can be reduced to its channel that sends follow-up RUM is to save resource.This method can turn back to 806 to be used for the further iteration that RUM transmission, service valuation and channel number are regulated.So the decision that the pass increases or reduces the number of the channel of its transmission RUM can also be the function of just being measured by the used QoS of this node.For example, increasing to its number that sends the channel of RUM (based on the unfavorable level that remains unchanged or worsen) can be meaningful to measuring of throughput/data transfer rate type, but may be really not so for latency metric.

According to related fields, node requisition that can be by allowing to have higher priority than the node of lower priority more the channel of more number come in conjunction with based on node and/or based on the priority of traffic.For example, disadvantageous video call side once can receive 8 channels, and similarly disadvantageous audio call side only receives two carrier waves.The maximum number of the obtainable channel of node also can be limited.The upper limit can be by the type of the traffic that is just carrying (for example, less packets of voice need not more channel usually), the power of this node classification (for example, more weak transmitter may not can on too big bandwidth, scatter its power), receive PSD apart from the distance of this receiver and result and determine.By this way, method 800 can further reduce interference and improve resource and save.Others provide and have adopted bitmask to indicate the number of the channel that is assigned to this node.For example, 6 bitmasks can be used to indicate can be and be up to 6 channels transmission RUM.This node can ask interfering nodes to forbid launching on the whole of the subcarrier that is distributed or a subclass in addition.

Fig. 9 is the diagrammatic sketch according to the RxRUM emission of firm power spectrum density (PSD) between two nodes of one or more aspects.When node experience was more seriously disturbed, it can have benefited from limiting the interference that is caused by other node, and then allowed the better space reuse and the fairness of improvement.In 802.11 protocol suites, request sends (RTS) and clear to send (CTS) grouping is used to realize fairness.Listen to the node stop transmission of this RTS and allow this requesting node successfully to send this grouping.Yet this mechanism often causes great deal of nodes unnecessarily to be closed.In addition, node can send RTS and CTS with total power on whole bandwidth.If some nodes have the power higher than other node, then the scope of the RTS of different nodes and CTS can be different.Therefore, may be subjected to the strong low power nodes of disturbing of high power node to turn off this high power node, because this high power node will be outside the scope of this low power nodes by RTS/CTS.In this case, this high power node is permanent " hiding " node for this low power nodes.Even this low power nodes has sent RTS or CTS to one of its transmitter or receiver, it also can not turn off this high power node.Therefore, 802.11MAC requires all nodes to have equal power.This has introduced restriction to performance, and is especially like this from the viewpoint that covers.

The mechanism of Fig. 9 helps the receiver broadcasting RUM from the node of the undesirable low SINR that just experiences one or more channels.This RUM can be constant known PSD send, no matter and the transmission power capabilities of this node how, and receiving node can observe received PSD and calculate himself and this RUM transmitting node between channel gain.In case this channel gain is known, then this receiving node just can be determined the amount (for example, part is based on the transmitting power of himself) of the interference that it may cause at this RUM transmitting node place, and can determine whether temporarily to forbid emission.

Each node in network has in the situation of different transmission power, and each node that listens to this RUM can determine whether closing based on its corresponding known transmit power and the channel gain that calculates.Therefore, low-powered transmitter need not unnecessarily to close, because it will can not cause remarkable interference.By this way, can only close and cause the node that disturbs, alleviate the defective of above-mentioned conventional RTS-CTS mechanism thus.

For example, first node (node A) can receive the RxRUM from Section Point (Node B) on channel h.This RxRUM can power level pRxRUM sends, and can with the signal value X that receives equal channel h multiply by transmitting power pRxRUM plus noise and mode assess X.Node A can carry out channel estimation protocol subsequently to estimate h by the signal value X that will receive divided by pRxRUM.If the weight of Node B is higher than the weight of node A, then node A can by with

I _A＝h _est*p _A

Mode this channel estimating be multiply by desirable transmitting power (p _A) further estimate the interference that node A emission may cause Node B, wherein, I _AIt is the interference that node A causes at the Node B place.

According to example, consider that wherein it is the system of 5MHz that maximum transmission power M is confirmed as 2 watts and minimum transmitted bandwidth, then maximum PSD is 2 watts/5MHz or 0.4W/MHz.Suppose that the minimum emissive power in this system is 200mW.Then this RUM is designed to have the scope that equals the maximum PSD scope that allowed in this system.Select then at the power spectral density of this 200mW transmitter and at the data transfer rate of this RUM so that equate with these scopes.Should be appreciated that above example presents for illustration purposes, and system described herein and/or method be not limited to the above occurrence that presents, but also can utilize any suitable value.

Figure 10 be according to one or more aspects be used for constant PSD be used for RUM send diagrammatic sketch with the method 1000 of the amount of the interference that helps to estimate that first node will cause at the Section Point place.1002, first node can receive the RxRUM from the known PSD of Section Point.1004, first node can calculate channel gain between himself and this Section Point based on this known PSD.1006, this first node can adopt the emission PSD that is associated with himself emission to estimate the amount of the interference that this first node may cause at the Section Point place at least in part based at 1004 channel gains that calculate.1008, this Interference Estimation can be compared with predetermined threshold, is launch or forbid emission to determine this first node.If should estimate greater than this predetermined threshold, then 1012, first node can be forbidden emission (this can comprise any one of launching in data or the emission request).If should estimate that then 1010, first node can be launched, because it can not disturb this Section Point substantially less than this predetermined threshold.Will be recognized that the RxRUM that this Section Point is launched can be listened to by a plurality of receiving nodes in this Section Point one given short range, wherein each all executing method 1000 with the assessment whether should launch.

According to another example, for example 200 milliwatts emission of Section Point, and first node can 2 watts of emissions.In this case, Section Point can have the emission radius r, and first node can have emission radius 10r.Therefore, this first node can be placed on apart from Section Point than this Section Point normal transmission or receive 10 times of places far away, but because its higher transmitting power may still be disturbed this Section Point.In this case, Section Point can promote its emission PSD and receive RxRUM to guarantee first node during the RxRUM emission.For example, Section Point can be with may being that the maximum PSD that is allowed that is scheduled to launches RxRUM for given network.This first node executing method 1000 subsequently also determines whether emission as described above.

Figure 11 shows according to various aspects and is used for method 1100 that planning and/or the grouping of the Interference Control of ad hoc wireless communication environment are responded.1102, can be received at the Section Point place from the RxRUM of first node.1104, can generate measurement value based on the predetermined value that is associated with this RUM at least in part.For example, when when 1102 receive RUM, receiving node (for example, Section Point) is known maybe and can be received that power determines RUM_Rx_PSD, RUM_Tx_PSD (known constant of system) and Data_Tx_PSD (this RUM receiving node wishes to send with it PSD of data) by estimating RUM.RUM_Tx_PSD and RUM_Rx_PSD also quantize with dBM/Hz, and wherein the former is constant for all nodes, and the latter decides according to channel gain.Similarly, Data_Tx_PSD is that unit weighs and can exist with ... the power grade that is associated with this node with dBM/Hz.What generate at 1104 places measures and can be expressed as:

Measure=Data_Tx_PSD+ (RUM_Rx_PSD-RUM_Tx_PSD)

It represents the estimation that may disturb that this RUM transmitting node (for example, at TxRUM) or RUM receiving node (for example, at RxRUM) cause at other node place.

1006, this metric can be refused threshold value (RRT) and compare with the predetermined RUM with the dBM/Hz definition.If this is measured more than or equal to RRT, then 1108, this Section Point can respond to RUM.If this is measured less than RRT, then 1110, Section Point can be forbidden this node respond (for example, because its can not disturb this first node substantially).Make an uproar (IOT) than relevant noise to the response of this RUM is removable with disturbing heat at 1108 places, wherein be this IOT of weighing of unit with the decibel greater than predetermined value Ω than last be the thermal noise N of unit measurement with dBM/Hz ₀(for example, feasible measuring 〉=Ω+N ₀).In order to ensure all significant potential may mourning in silence by interference source, RRT can be set as RRT=Ω+N ₀Only should be noted that when the weight indication RUM transmitter indication of being announced on this RUM to have when more unfavorable greatly, just bear the task of determining whether the RRT threshold value will reach by the RxRUM receiving node than RUM recipient.

Figure 12 is the diagrammatic sketch of method 1200 that is used to generate RxRUM according to above-mentioned each side.1202, can generate RUM at the first node place, wherein this RUM comprises that indication has met or exceeded the information of this first predetermined threshold.First predetermined threshold for example can be represented can be according to its interference heat of weighing the service at first node place make an uproar (IOT) level, data transfer rate, Carrier interference ratio (C/I), throughput level, spectrum efficiency level, stand-by period level or any other suitable tolerance.1204, this RUM can be weighted the degree that has surpassed second predetermined threshold with indication.According to some aspects, this weighted value can be the value through quantizing.

This second predetermined threshold for example can be represented can be according to its interference heat of weighing the service level at first node place make an uproar (IOT) level, data transfer rate, Carrier interference ratio (C/I), throughput level, spectrum efficiency level, stand-by period level or any other suitable tolerance.Though first and second predetermined thresholds can be equal substantially, do not need so.In addition, this first and second predetermined threshold can be associated with different parameters (for example, respectively with IOT and C/I; Respectively with stand-by period and data transfer rate; Or any other arrangement of described parameter).1206, the RUM that is weighted can be sent to one or more other nodes.

Figure 13 is the diagrammatic sketch that is used for method 1300 that one or more RxRUM that receive are responded according to one or more aspects.1302, can receive RxRUM at the first node place from second (or more) nodes.This RxRUM can comprise the relevant information of situation (for example, aforesaid unfavorable level) with Section Point, can be used for determining the situation of Section Point by first node in 1304 these information.1306, the situation of this Section Point can be compared with the situation of first node.1308, this comparison can allow to determine whether to send data.

For example, if this relatively indicates the situation of first node to be better than Section Point, then first node can forbid sending data (for example, keep out of the way and allow more disadvantageous Section Point to communicate by letter more efficiently).Additionally or alternati, if the situation of first node is better than Section Point, then first node can as above be determined the level of the interference that this first node can cause at the Section Point place describedly about Figure 10.This definite can comprising, for example, utilize Section Point send this RxRUM known constant power or known constant power spectral density, estimate between this first node and the Section Point channel gain, select the transmission from this first node to Section Point transmit power level, estimate the level that is sent in the interference that Section Point will cause of this selected power level and determine whether estimated interference level surpasses predetermined acceptable interference threshold level.

Relatively indicate under the situation of situation than the situation difference of Section Point of first node at this, this first node can select to ignore this RUM.According on the other hand, have under the situation of essentially identical situation at first node and Section Point, can adopt the weight treatment mechanism as above about ground as described in Fig. 6.According to others, the information among this RUM of being included in can be used to generate and can refuse threshold value (RRT) relatively so that the measurement value as determining whether as described in about Figure 11 this RUM is responded with RUM.According to others, based on send determining of data at 1308 places, this transmission can be included in and send communication data on first channel, send the request transmission message of asking to send message and/or sending data in the request that sends on the second channel on first channel on this first channel.

On the other hand, can comprise the result that the extraneous information of following request knows that with the device that helps to be ranked the RxRUM of this node place handles.For example, suppose that A sends data and C sends data to D to B.Suppose that B and D both send out RxRUM, but the used weight of B is than D higher (or more unfavorable).Then A will send request (because it has been handled the RxRUM that receives and has concluded that its receiver is that B is worst) and comprise " the best " position to B, and it has won contention and should be ranked (winning because it may not continue maintenance in the future) rapidly to be somebody's turn to do the indication of " the best " position.On the contrary, C will handle RUM and conclude that it can not ask.Yet even it can allow D know its current can not being scheduled, data will send and D should adhere to sending RxRUM but it has.For example, if D does not listen to any request, it can conclude mistakenly in its receiver that neither one has any data to send and may stop to send RxRUM.In order to prevent this situation, C sends has it by " request " of the indication of other RxRUM " obstruction ".This will play to the current C of not being ranked of D indication but keep sending RxRUM and will a bit win the effect of contention at certain to wish C.

Figure 14 shows example wireless communications 1400.For brevity, this wireless communication system 1400 has been described a base station and a terminal.Yet, will be recognized that this system can comprise more than one base station and/or more than one terminal, wherein other base station and/or terminal can be similar substantially or different with the exemplary base and/or the terminal of the following stated.In addition, will be recognized that this base station and/or terminal can adopt method as herein described (Fig. 2,5-8 and 10-13) and/or system (Fig. 1,3,4,9 and 15-18) to help the communication between them.For example, node in the system 1400 (for example, base station and/or terminal) can store and execution be used to realize arbitrary said method (for example, generate RUM, RUM is responded, determines that node is unfavorable, selects to be used for the number of the subcarrier that RUM sends etc.) instruction and with the data of carrying out these actions and being associated in order to any other appropriate action that realizes variety of protocol described herein.

Referring now to Figure 14, on the down link at access point 1405 places, emission (TX) data processor 1410 receives, formats, encodes, interweaves and modulates (or symbol mapped) traffic data and modulated symbol (" data symbols ") is provided.Symbol modulator 1415 receives and deal with data code element and pilot frequency code element, and code element stream is provided.Symbol modulator 1420 is with data and pilot frequency code element is multiplexed and they are offered transmitter unit (TMTR) 1420.Each transmit symbol can be data symbols, pilot frequency code element or be 0 signal value.Pilot frequency code element can send in each code-element period continuously.Pilot frequency code element can be frequency division multiplexing (FDM), OFDM (OFDM), Time Division Multiplexing, frequency division multiplexing (FDM) or code division multiplexing (CDM).

TMTR 1420 receiving code flow filaments also convert thereof into one or more analog signals, and further regulate the down link signal that (for example, amplification, filtering and up-conversion) this analog signal is suitable for sending with generation on wireless channel.This down link signal is sent to terminal by antenna 1425 subsequently.In terminal 1430, antenna 1435 receives this down link signal and the signal that receives is offered receiver unit (RCVR) 1440.Receiver unit 1440 is regulated (for example, filtering, amplification and down-conversion) this signal that receives also will be signal digitalized to obtain sample through what regulate.Symbol demodulator 1445 is with the pilot frequency code element demodulation that receives and provide it to processor 1450 to be used for channel estimating.Symbol demodulator 1445 is also estimated, the data symbols that receives is carried out data demodulates to obtain data symbols estimation (being the estimation to the data symbols that is sent), also this data symbols to be estimated to offer RX data processor 1455 frequency response of down link from processor 1450 receptions, by the latter with data symbols demodulation (that is symbol de-maps), deinterleaving, and the traffic data of decoding to recover to be sent.The processing of symbol demodulator 1445 and RX data processor 1445 respectively with symbol modulator 1415 and TX data processor 1410 access point 1405 places the processing complementation.

On up link, TX data processor 1460 processes traffic data also provide data symbols.Symbol modulator 1465 receive data symbols and its and pilot frequency code element is multiplexed, carry out and modulate and provide code element stream.Transmitter unit 1470 receive subsequently and the transaction code flow filament to generate the uplink signal can be sent to access point 1405 by antenna 1435.

At access point 1405 places, come the uplink signal of self terminal 1430 to be received by antenna 1425 and handle to obtain sample by receiver unit 1475.Symbol demodulator 1480 is handled sample subsequently and is provided at the receive pilot frequency code element and the data symbols of up link and estimates.RX data processor 1485 is handled this data symbols and is estimated to recover the traffic data that terminal 1430 is sent.Processor 1490 is carried out the channel estimating of each active terminal that sends on up link.A plurality of antennas can send pilot tone concomitantly on up link on its corresponding pilot subbands collection that distributes, wherein the pilot subbands collection can interweave.

Processor 1490 and 1450 instructs the operation on (for example, control, coordination, management etc.) access point 1405 and the terminal 1430 respectively.Corresponding processor 1490 and 1450 can be associated with program code stored and memory of data unit (not shown ).Processor 1490 and 1450 also can be carried out calculating respectively and estimate with the frequency and the impulse response of deriving up link and down link.

For multi-address system (for example, FDMA, OFDMA, CDMA, TDMA etc.), a plurality of terminals can send on up link concomitantly.For this system, can between different terminals, share pilot subbands.The pilot subbands that channel estimation technique can be used on each terminal is crossed in the situation of whole working band (may except that band edge).Can expect this pilot subband structure with obtain to each terminal frequency diversity.These technology as herein described can realize by various means.For example, these technology can realize in hardware, software or its combination.Realize for hardware, can be at one or more application-specific integrated circuit (ASIC)s (ASIC), digital signal processor (DSP), digital signal processor spare (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, be designed to carry out the processing unit that realization in other electronic unit of function as herein described or its combination is used for channel estimating.About software, can realize by the means (for example, program, function etc.) of carrying out function described herein.Software code can be stored in the memory cell and by processor 1490 and 1450 and carry out.

Realize that for software the techniques described herein can use module/means (for example, program, function etc.) of carrying out function as herein described to realize.Software code can be stored in the memory cell and by processor and carry out.Can be coupled to communicatedly in the situation of processor via various means as known in the art at memory cell, can be in this processor or the outside of this processor realize this memory cell.

Forward Figure 15-18 now to and about its described various modules, will be recognized that the module that is used for sending for example can comprise transmitter and/or can realize at processor.Similarly, the module that is used for receiving can comprise receiver and/or can realize at processor.In addition, be used for comparison, determine, calculate and/or carry out other module of analyzing action and can comprise the processor of carrying out the instruction that is used to realize various and corresponding action.

Figure 15 is the diagrammatic sketch according to the device that helps RFDC 1500 of various aspects.Device 1500 is represented as a series of relevant functional blocks, and these functional blocks can be represented the function by processor, software or its combination (for example, firmware) realization.For example, device 1500 can be provided for carrying out such as above module about described each action of each accompanying drawing.Device 1500 comprises the module 1502 of the number that is used for the required channel of definite transmission.Should determine can be according to the weight that is associated with the node that has wherein adopted this device, the weight that is associated with one or more other nodes, can wait for the number of the channel of transmission and carry out.In addition, each weight can be the function of the number of the stream supported of the node that is associated with this weight.Additionally or alternati, a given weight can be the function of the interference experienced of this node.

Device 1500 comprises in addition selects this node to can be the selection module 1504 that it sends the channel of request.Selection module 1504 can assess in addition the utilization of resources message (RUM) that receives with definite which channel can be used and which channel is unavailable.For example, each RUM can comprise the information that is associated with unavailable channel, and selects module 1504 can determine that a given channel of not indicated by this RUM can use.Sending module 1506 can send selecting the request of at least one selected channel of module 1504.Will be recognized that device 1500 can be at access point, be used in accessing terminal etc., and can comprise in order to realize any suitable function of the whole bag of tricks as herein described.

Figure 16 is the diagrammatic sketch that helps the device 1600 of radio communication according to the use utilization of resources message (RUM) of one or more aspects.Device 1600 is represented as a series of relevant functional blocks, and these functional blocks can be represented the function by processor, software or its combination (for example, firmware) realization.For example, device 1600 can be provided for carrying out such as above module about described each action of each accompanying drawing.Device 1600 comprises the unfavorable level cover half piece 1602 and determine that at determination module 1602 level of the service that these node places receive is in or is lower than the RUM generation module 1604 that generates RUM under the situation of a predetermined threshold levels really of determining node.Select module 1606 can select to send it one or more resources of RUM, and RUM generation module 1604 can be indicated these channels subsequently in RUM.Sending module 1608 can send this RUM subsequently.

Resource selection module 1606 can determine that the level of the service that receives regulated the number that subsequently it is sent the selected resource of follow-up RUM in response to last RUM improves based on determination module 1602.For example, in this case, select the level of the service of receiving that module 1606 can improve in response to this node place and reduce number of resources indicated among the follow-up RUM, and can be in response to reducing or the level of the static service of receiving and increase the number of selected resource.According to others, determination module 1602 can receive that one or more in any other suitable parameters of service determine that this node place receives the level of service according to disturb heat to make an uproar data transfer rate, spectrum efficiency, throughput, Carrier interference ratio or this node place that ratio, stand-by period, this node place reach.Will be recognized that device 1600 can be at access point, be used in accessing terminal etc., and can comprise in order to realize any proper function of the whole bag of tricks described herein.

Figure 17 helps to generate utilization of resources message (RUM) and the weighting RUM diagrammatic sketch with the device 1700 of indicating unfavorable level according to various aspects.Device 1700 is represented as a series of relevant functional blocks, and these functional blocks can be represented the function by processor, software or its combination (for example, firmware) realization.For example, device 1700 can be provided for carrying out such as above module about described each action of each accompanying drawing.Device 1700 comprises can generate the RUM generation module 1702 that indication has surpassed the RUM of first predetermined threshold.This first predetermined threshold can with disturb heat to make an uproar to be associated and/or to represent them than the threshold level of (IOT), data transfer rate, Carrier interference ratio (C/I), throughput level, spectrum efficiency level, stand-by period level etc.

Device 1700 can comprise RUM weighting block 1704 in addition, this module can be with indicating the value that surpasses the degree of second predetermined threshold to come this RUM of weighting, this can comprise the actual value of the parameter (for example, disturbing heat to make an uproar than (IOT), data transfer rate, Carrier interference ratio (C/I), throughput level, spectrum efficiency level, stand-by period level etc.) of determining this node place and reaching and the ratio of desired value or desired value.In addition, weighted value can be the value through quantizing.Will be recognized that device 1700 can be at access point, be used in accessing terminal etc., and can comprise in order to realize any proper function of the whole bag of tricks described herein.

Figure 18 is to determine the diagrammatic sketch of the most disadvantageous device 1800 of which node according to the relative situation that helps each node place in the comparison wireless communications environment of one or more aspects.Device 1800 is represented as a series of relevant functional blocks, and these functional blocks can be represented the function by processor, software or its combination (for example, firmware) realization.For example, device 1800 can be provided for carrying out such as above module about described each action of each accompanying drawing.Device 1800 can be used and comprise the RUM receiver module 1802 of reception from the RUM of at least one Section Point in first node.Device 1800 can comprise in addition based on the situation of determining this Section Point with the information that the RUM that is received from this Section Point is associated cover half piece 1804 and being used for comparison module 1806 that the situation of first node is compared with the situation of determined Section Point really.Determination module 1804 also can relatively determine whether to send data on first channel subsequently based on this.

According to each others, determining of whether sending can be the situation that is better than, is equal to substantially, still is inferior to this Section Point based on the situation of this first node.In addition, determination module 1804 can send data-signal, send request transmission message or send on second channel on first channel and ask to send message on first channel.In one situation of back, send message in the request that sends on the second channel and can comprise on first channel, sending the request of data.Will be recognized that device 1800 can be at access point, be used in accessing terminal etc., and can comprise in order to realize any proper function of the whole bag of tricks described herein.

The example that comprises one or more aspects described above.Certainly can not describe all combinations that can envision of assembly or method for the purpose of describing aforementioned aspect, but one skilled in the art will recognize that the further combination and the transmuting of many various aspects are possible.Therefore, described aspect is intended to comprise all this changes, change and the variation in the spirit and scope that drop on claims.In addition, with regard to term " comprise " specifically describe or claim in regard to the employed scope, this term is intended to comprise that to be similar to the mode that term " comprises " make explanations when using in claims as the transition speech " comprising " herein.

Claims (40)

1. wireless communications method comprises:

Determine that the node place receives the level of service;

If the described level of receiving service is equal to or less than the predetermined threshold levels of the service of receiving then generates utilization of resources message (RUM);

Be chosen as the number that it sends one or more resources of described RUM; And

For selected one or more resources send described RUM.

2. the method for claim 1 is characterized in that, also comprises according to described determining to be adjusted to the number that it sends described one or more resources of follow-up RUM, wherein said determine to comprise determine whether the described level of service of receiving improves.

3. method as claimed in claim 2 is characterized in that, also comprises in response to the rising of the described level of receiving service and is reduced to the number that it sends described one or more resources of described follow-up RUM.

4. method as claimed in claim 2 is characterized in that, also comprises in response to the decline of the described level of receiving service or stagnation and increases the number that sends described one or more resources of described follow-up RUM for it.

5. the method for claim 1 is characterized in that, also is included as the chosen predetermined upper limit of number that is used for described one or more resources of described RUM transmission.

6. method as claimed in claim 5 is characterized in that, the described upper limit is the function of node type.

7. method as claimed in claim 5 is characterized in that, the described upper limit is the function of expectation of service.

8. method as claimed in claim 5 is characterized in that, the described upper limit is the function by the number of the stream of described node.

9. the method for claim 1 is characterized in that, described node place described receives that the level of service is to make an uproar than the function of the level of (IOT) in the interference heat of described node place experience.

10. the method for claim 1 is characterized in that, described node place described receives that the level of service is the function of the level of the data transfer rate that reaches at described node place.

11. the method for claim 1 is characterized in that, described node place described receives that the level of service is the function in the level of the Carrier interference ratio (C/I) of described node place experience.

12. the method for claim 1 is characterized in that, described node place described receives that the level of service is the function of the level of the throughput that reaches at described node place.

13. the method for claim 1 is characterized in that, described node place described receives that the level of service is the function of the level of the spectrum efficiency that reaches at described node place.

14. the method for claim 1 is characterized in that, described node place described receives that the level of service is the function in the level of stand-by period of described node place experience.

15. the method for claim 1 is characterized in that, described node comprises access point.

16. the method for claim 1 is characterized in that, described node comprises and accessing terminal.

17. a device that helps radio communication comprises:

Determination module determines that the node place receives the level of service;

Generation module is if the described level of receiving service is equal to or less than the predetermined threshold levels of the service of receiving then generates utilization of resources message (RUM);

Select module, be chosen as the number that it sends one or more resources of described RUM; And

Sending module is for selected one or more resources send described RUM.

18. device as claimed in claim 17, it is characterized in that, described selection module is determined to be adjusted to the number that it sends described one or more resources of follow-up RUM according to described, and wherein said determine to comprise determine whether the described level of service of receiving improves.

19. device as claimed in claim 18 is characterized in that, described selection module responds is in the rising of the described level of receiving service and be reduced to the number that it sends described one or more resources of described follow-up RUM.

20. device as claimed in claim 18 is characterized in that, described selection module responds is in the decline of the described level of receiving service or stagnation and increase the number that sends described one or more resources of described follow-up RUM for it.

21. device as claimed in claim 17 is characterized in that, also comprises the chosen predetermined upper limit that is used for the number of described one or more resources that described RUM sends.

22. device as claimed in claim 21 is characterized in that, the described upper limit is the function of node type.

23. device as claimed in claim 21 is characterized in that, the described upper limit is the function of expectation of service.

24. device as claimed in claim 21 is characterized in that, the described upper limit is the function by the number of the stream of described node.

25. device as claimed in claim 17, it is characterized in that described node place described receives that the level of service is following function one of at least: make an uproar than the level of the level of (IOT), the data transfer rate that reaches at described node place, in the level of the level of the level of the Carrier interference ratio (C/I) of described node place experience, the throughput that reaches at described node place, the spectrum efficiency that reaches at described node place and in the level of stand-by period of described node place experience in the interference heat of described node place experience.

26. device as claimed in claim 17 is characterized in that, described node comprises access point.

27. device as claimed in claim 17 is characterized in that, described node comprises and accessing terminal.

28. a device that helps radio communication comprises:

Be used for definite node place and receive the device of the level of service;

Be used under the described level of receiving service is equal to or less than the situation of predetermined threshold levels of the service of receiving, generating the device of utilization of resources message (RUM);

Be used to be chosen as the device of the number of its one or more resources that send described RUM; And

Be used to selected one or more resources to send the device of described RUM.

29. device as claimed in claim 28, it is characterized in that, described choice device is determined to be adjusted to the number that it sends described one or more resources of follow-up RUM according to described, and wherein said determine to comprise determine whether the described level of service of receiving improves.

30. device as claimed in claim 29 is characterized in that, described choice device is in response to the rising of the described level of receiving service and be reduced to the number that it sends described one or more resources of described follow-up RUM.

31. device as claimed in claim 29 is characterized in that, described choice device is in response to the decline of the described level of receiving service or stagnation and increase the number that sends described one or more resources of described follow-up RUM for it.

32. device as claimed in claim 28 is characterized in that, also comprises the chosen predetermined upper limit that is used for the number of described one or more resources that described RUM sends.

33. device as claimed in claim 32 is characterized in that, the described upper limit is the function of node type.

34. device as claimed in claim 32 is characterized in that, the described upper limit is the function of expectation of service.

35. device as claimed in claim 32 is characterized in that, the described upper limit is the function by the number of the stream of described node.

36. device as claimed in claim 28, it is characterized in that described node place described receives that the level of service is following function one of at least: make an uproar than the level of the level of (IOT), the data transfer rate that reaches at described node place, in the level of the level of the level of the Carrier interference ratio (C/I) of described node place experience, the throughput that reaches at described node place, the spectrum efficiency that reaches at described node place and in the level of stand-by period of described node place experience in the interference heat of described node place experience.

37. device as claimed in claim 28 is characterized in that, described node comprises access point.

38. device as claimed in claim 28 is characterized in that, described node comprises and accessing terminal.

39. a machine readable media that comprises the instruction that is used for data communication, wherein said instruction make described machine when carrying out:

Determine that the node place receives the level of service;

If the described level of receiving service is equal to or less than the predetermined threshold levels of the service of receiving then generates utilization of resources message (RUM);

Be chosen as the number that it sends one or more resources of described RUM; And

For selected one or more resources send described RUM.

40. a processor that helps data communication, described processor is configured to:

Determine that the node place receives the level of service;

If the described level of receiving service is equal to or less than the predetermined threshold levels of the service of receiving then generates utilization of resources message (RUM);

Be chosen as the number that it sends one or more resources of described RUM; And

For selected one or more resources send described RUM.

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