CN102273171A - Method, device and computer program for interacting shared information between communication units - Google Patents
Method, device and computer program for interacting shared information between communication units Download PDFInfo
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- CN102273171A CN102273171A CN200980154049XA CN200980154049A CN102273171A CN 102273171 A CN102273171 A CN 102273171A CN 200980154049X A CN200980154049X A CN 200980154049XA CN 200980154049 A CN200980154049 A CN 200980154049A CN 102273171 A CN102273171 A CN 102273171A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1854—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with non-centralised forwarding system, e.g. chaincast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/04—Protocols specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
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Abstract
A method, a device and computer program for interacting shared information between communication units are provided, wherein the communication units communicate with each other by at least one forwarding unit. The method includes the following steps: when the forwarding units receive shared information from at least one communication unit, they judge whether the information is need to be forwarded to at least one other communication unit or not; the other communication units are notified that the information is received if the information is need to be forwarded; the other communication units select appropriate forwarding units from the at least one forwarding unit that sent notification to them to forward the information and at least notify the selected forwarding units the selecting result after receiving notification from the at least one forwarding unit; the selected forwarding units forward the received shared information to the other communication units after receiving the notification from the other communication units.
Description
It is a kind of to be used for method, equipment and the computer program of the shared information of the interaction between communication unit
Technical field
The present invention relates to network service, more particularly, to information exchange is carried out between communication unit to realize the method, equipment and computer program of resource-sharing.Background technology
With various wireless communication systems（Such as WLAN, mobile telephone network, WiMAX etc.）Extensive laying, wireless frequency spectrum becomes increasingly deficienter.Spectrum-sharing techniques are just causing the extensive concern of people as a kind of feasible scheme for solving the deficient problem of frequency spectrum.
According to whether exchanging the information related to spectrum utilization between communication node, spectrum sharing mechanisms can be divided into two classes：Coodination modes and incompatible mode.Wave point or other communication links can be used to share the information related to spectrum utilization each other in coodination modes, between communication node.If here, multiple terminals in a base station and its overlay area are referred to as wireless system by us, (frequency spectrum resource is particularly with shared resource in wireless system）Can be referred to as using related information share information between system.Shared information, such as IP address, channel status etc. between mutual system can be shared between base station by air interface or other communication links.And in incompatible mode, as its name suggests, between the system for sharing frequency spectrum, that is, between base station, information will not be shared between shared system each other.Compared with incompatible mode, because coodination modes can efficiently reduce colliding with each other for resource use, interference that coodination modes under normal circumstances can be preferably between solution system simultaneously realizes the higher availability of frequency spectrum.
At present, in most frequency spectrum share scenes, in the absence of wired communication link（Such as IP communication links）For the information sharing between system.Therefore, usually require to exchange information using wireless communication link between system.In some frequency spectrum share scenes, even if having
A little wireless systems possess the wired communications links available for the information exchange between system, but also must know other side's using wireless technology first between the starting stage, these systems
The information such as IP address.On this basis, follow-up letter could be interacted by wire communication to realize coexisting between frequency language shared system, IEEE 802.16h define a kind of mechanism, and message transmission time piece is coexisting（CMI, Coexistence Messaging Interval) in shared information between Transmission system.Here, the collection of some share spectrum resources and system adjacent to each other is collectively referred to as that community coexists by we（ Coexistence Community ) .During community coexists in foundation, new base station（IBS, Initialization Base Station, initial base station）By using CMI, by its related information transmission, to existing OBS, (Operation Base Station operate base station）, so that the IBS knows in the community that coexists having built up, and other base station collaborations in community next coexist so as to share spectrum resources with this.
As shown in figure 1, Fig. 1 shares information transmission mechanisms between being shown schematically in system specified in IEEE 802.16h.Wherein, BS1 is foregoing IBS, and it carries out radio communication using WiMAX, and BS2 is a base station in coexisting body, and it is located in WLAN.Shen Se Round enclose expression and are subordinated to the subscriber station SS that BS1 subscriber stations SS (Subscriber Station), Qian Se Round circle expressions are subordinated to BS2 in Fig. 1.Wherein, SS1-SS9 is subordinated to BS2, the overlapping region of the coverage in BS1 and BS2, and it can receive the message from both BS1 and BS2.Similar, SS10-SS11 is subordinated to BS1, is also at the overlapping region of BS1 and BS2 coverage and can receive the message from both BS1 and BS2.Here, for simplicity, it illustrate only a system in coexisting body.The transmission that information is shared due to can not be communicated directly with one another between neighbouring BS, therefore between system uses two ways：
Mode one：First, BS1 will share the subscriber station SS (Subscriber Station) that information is broadcast in its overlay area between system.For example, BSl is in the CX CMI DN of their own, (Coexistence-Coexistence Messages interval- Downlink, coexist-coexist the m- downlink in message area）Shared between middle its system of broadcast
Information, such as BSD (Base Station Describer, base station descriptor）Message etc..When multiple external SS in overlapping region are (for BS1）, i.e. SS1-SS9 in Fig. 1 received when sharing information between the system, then message will be shared between these systems respectively and be transmitted to by its up-link and provide the BS2 serviced for it.
Mode two：Shared information between system is broadcast to the SS, such as SS10 and SSll oneself serviced by BS1 in its downlink;By SS10 and SSll information will be shared using CX_CMI_UN by up-link between system again and be sent to adjacent base station BS1.
In addition, 802.22 also define the transmission mechanism of shared information between similar system, its network architecture and communication process are similar to the situation in Fig. 1.Unlike, that positioned at overlapping region is not subscriber station SS, but client device CPE, wherein as shown in Figure 2 for the frame structure that information is shared between bearing system.By the way that to SCH, (Super Frame Control Header, superframe controls 4 blunt heads between system）The interaction that information is shared between the system between BS is realized with the blunt literary transmitting-receivings of CBP (Coexistence Beacon Protocol, coexistence beacon protocol) 4.As shown in Fig. 2 superframe includes preamble, SCH and multiple frames.Wherein, information is shared between the system of cell to be encapsulated in SCH, and by BS broadcast to CPE.The SCH received is carried in CBP packets by each CPE for receiving SCH information, and in SCW (Self-Coexistence Window, from coexistence window）The middle service BS that they are sent to oneself.By receiving CBP packets, neighbouring B S share information between just resulting in the system of correlation, such as channel, corresponding slot occupancy information that other cells are used, so that control coexist certainly between 802.22 systems are better achieved.
From above-mentioned, information transmission mechanisms are shared between existing system and consume substantial amounts of frequency spectrum.Because, information is shared between identical system and has been passed repeatedly.For example, in 802.16h, each SS is required for a up-link transmission opportunity, its service BS is transmitted to so as to which information will be shared between identical system;In 802.22, identical SCH information can also be transmitted multiple by multiple CPE.Therefore, shared between existing system under information transmission mechanisms, the quantity of the SS/CPE in overlapping region is more, and the frequency spectrum resource of consumption is more.In this case, be easily caused for data transport service can
With the dynamic change of frequency spectrum, that is, there is " frequency spectrum breathing " phenomenon, this ensures to bring great challenge to the resource allocation in frequency spectrum share and QoS of survice.
In addition, in 802.22, because CBP is generally transmitted in the way of avoiding based on conflict is striven unexpectedly or in the way of CDMA in SCW.Therefore, the same SCH CBP that will increase in the conflict based on the CBP in the access mode striven unexpectedly, or access mode of the increase based on CDMA that is transmitted several times is interfered.In addition, the blunt literary transmission delays for interfering and conflicting information is shared between the system that dramatically increases of CBP 4, cause the ageing of information shared between system to be had a greatly reduced quality.
It can be seen that, the transmission mechanism of shared information is necessary so as to which resource-sharing is better achieved between a kind of efficient, reliable system of design.The content of the invention
It is used for method, equipment and the computer program of the shared information of the interaction between communication unit the invention provides a kind of, to solve, or at least Slow solution above mentioned problems.
It is used for the method for the shared information of the interaction between communication unit the invention provides a kind of, wherein, communicated between the communication unit by least one retransmission unit, methods described includes step：When the retransmission unit receives the shared information from least one communication unit, judge whether to need to forward that information to other communication units；If necessary to forward, then the reception of other communication unit described informations is notified；Receive after the notice from retransmission unit at least one described, other described communication units select suitable retransmission unit at least to be notified to selected retransmission unit to forward described information, and by selection result from least one retransmission unit described in being given notice to it；After the notice for receiving the relevant forwarding from other communication units, the shared information received is transmitted to other described communication units by selected retransmission unit.
Wherein, the retransmission unit can receive from communication unit at least one described to broadcast, the shared information that multicast or multicast mode are sent.
Preferably, other described communication units are that the retransmission unit is managed, or provide the communication unit serviced for it.
Preferably, the communication unit is the central control equipment of point-to-multipoint system, is optionally base station or access point.
Alternatively, the retransmission unit is wireless forwarding unit or subscriber station or client device CPE.
Preferably, the retransmission unit is from selecting other communication units described in suitable retransmission unit or the communication unit for sending the shared information to the retransmission unit to be managed it or providing service for it.
Preferably, the shared information is related to the spectrum utilization in wireless network.
Alternatively, other described communication units with broadcast mode by selection result notify to oriented its have issued the retransmission unit of notice, or selection result is notified to selected retransmission unit with unicast, multicast or multicast.
Wherein, have learned that community coexists in the communication unit composition of mutual shared information, the retransmission unit at least be made whether the decision for needing to forward based on one of the following：Whether the shared information received is from the new communication unit coexisted beyond community；The shared information received from the communication unit coexisted in community, at least a portion of the information whether beyond setting threshold value.
Preferably, other described communication units select suitable retransmission unit at least based on one of the following：Channel quality, geographical position, power, mobility, security.
Preferably, other the described communication units for selecting suitable retransmission unit are purpose communication units；The shared information comes from source communication unit；The retransmission unit is in the overlapping region that neighbouring communication units are covered.
According to another aspect of the present invention, propose a kind of retransmission unit for the shared information of interaction between communication unit, wherein, communicated between the communication unit by retransmission unit at least one described, the retransmission unit is used for when receiving the shared information from the communication unit, judges whether to need to forward that information at least one other communication unit；For if it is required, then notifying the reception of other communication unit described informations；For when receiving the notice of the relevant forwarding from other communication units, the shared information received to be transmitted into other described communication units.
According to another aspect of the invention, it is proposed that a kind of be used for the retransmission unit of the shared information of the interaction between communication unit, wherein, communicated between the communication unit by retransmission unit at least one described, the retransmission unit includes：Preselector, for when receiving the shared information from the communication unit, judging whether to need to forward that information to other communication units；Communicator, for when needing the forwarding, the reception of other communication unit described informations is notified, and when receiving the notice of the relevant forwarding from other communication units, the shared information received is transmitted to other described communication units.
Wherein, alternatively, the retransmission unit also includes time set, the retransmission unit or its time set are additionally operable to start timing after the reception of other communication unit described informations is notified, when the threshold value more than setting is also not received by the notice of the relevant forwarding from other communication units, the shared information received is abandoned by the retransmission unit or its communicator.
Alternatively, the retransmission unit or its communicator determine whether to forward described information according to the notice about forwarding.
Alternatively, the retransmission unit also safeguards the criterion for judging whether to need to carry out the forwarding.
Alternatively, the retransmission unit also includes the pre-selection criterion pond for being used to retain criterion, and criterion of the preselector in pre-selection criterion pond judges whether to need to carry out the forwarding.
Preferably, have learned that community coexists in the communication unit composition of mutual shared information, the criterion includes：Whether the shared information received is from the new communication unit coexisted beyond community；The shared information received from the communication unit coexisted in community, at least a portion of the information whether beyond setting threshold value.
Preferably, if the shared information is from the new communication unit coexisted beyond community, or the shared information from the communication unit and at least a portion of the information coexisted in community beyond the threshold value, then demonstrate the need for carrying out the forwarding.
Preferably, at least a portion of described information is that the retransmission unit is received from same
The time interval of the shared information of one communication unit.
Alternatively, the retransmission unit or its communicator notify the reception of other communication unit described informations by single message or slightly with mode.
According to another aspect of the present invention there is provided a kind of method for being used to forward shared information between communication unit, wherein, communicated between the communication unit by retransmission unit at least one described, methods described includes step：
When the retransmission unit is received from the shared information of communication unit at least one described, judge whether to need to forward that information at least one other communication unit；
If it is required, then notifying the reception of other communication unit described informations；When receiving the notice of the relevant forwarding from other communication units, the shared information received is transmitted to other described communication units.
Preferably, the step of starting timing after the reception for notifying other communication unit described informations is additionally included in, when the threshold value more than setting, which is also not received by the forwarding from other communication units, to be notified, the shared information received is abandoned.
Alternatively, judged whether to need to carry out the forwarding according to the criterion of maintenance.The criterion include it is following at least one：Whether the shared information received is from the new communication unit coexisted beyond community；The shared information received from the communication unit coexisted in community, at least a portion of the information whether beyond setting threshold value.
According to another aspect of the present invention, there is provided a kind of communication unit for being used to interact shared information with other communication units, the communication unit is communicated by least one retransmission unit with other described communication units, the communication unit is used for after the notice for receiving shared information from the retransmission unit is received, and suitable retransmission unit is selected from least one retransmission unit described in being given notice to it to forward described information；For selection result at least to be notified to selected retransmission unit；For receiving the shared information from selected retransmission unit.
According to another aspect of the present invention there is provided a kind of communication unit for being used to interact shared information with other communication units, the communication unit is communicated by least one retransmission unit with other described communication units, and the communication unit includes：Whole screening device, is used
In receiving after the notice from the retransmission unit receives the notice of shared information, suitable retransmission unit is selected from least one retransmission unit described in being given notice to it to forward described information；Communicator, at least notifying selection result to selected retransmission unit, and receives the shared information from selected retransmission unit.
Alternatively, the communication unit or its communicator with broadcast mode by selection result notify to oriented its have issued the retransmission unit of notice, or selection result is notified to selected retransmission unit with unicast, multicast or multicast.
Preferably, the communication unit or its whole screening device select suitable retransmission unit at least based on one of the following：Channel quality, geographical position, power, mobility, security.
According to another aspect of the present invention there is provided a kind of method for being used to interact shared information with other communication units, communicated between the communication unit by least one retransmission unit, methods described includes step：
Receiving after the notice from retransmission unit at least one described receives the notice of shared information, suitable retransmission unit is selected from least one retransmission unit described in being given notice to it to forward described information；
Selection result is at least notified to selected retransmission unit, and receive the shared information from selected retransmission unit.
It is used for the system of the shared information of the interaction between communication unit there is provided a kind of according to another aspect of the present invention, it includes above-mentioned retransmission unit and communication unit.
According to another aspect of the present invention there is provided a kind of computer program product, it includes the executable program code of computer, for performing the above method, retransmission unit, communication unit, or system.
According to another aspect of the present invention there is provided a kind of computer-readable recording medium, the executable program code of above computer is stored thereon with.
The scheme provided according to the present invention, due to only part retransmission unit（I.e. selected retransmission unit）The shared information of forwarding, rather than each receive as prior art the forwarding unit of shared information it is forwarded, therefore the scheme that the present invention is provided can
Efficiently solve the resource that problem is transmitted several times, significantly reduces required for transmission this type of information that identical shares information.
In addition, by using the solution of the present invention, " frequency spectrum breathing " phenomenon of the prior art can be solved, because the solution of the present invention only needs seldom resource to be used for the communication for sharing information, so that Slow solves the dynamic change of the resource for data, services.In other words, the QoS of data service can preferably be ensured.
Moreover, the solution of the present invention can greatly reduce the transmission conflict of shared information, and then the transmission delay of the packet caused by conflict is reduced, therefore the ageing of these shared information can be better assured that.In addition, the double selection mechanism by considering many factors, improves the reliability of the transmission of shared information.Brief description of the drawings
Detailed description below is read in conjunction with the figure, above and other advantage of the invention will be apparent.It should be noted that each example principle this purpose of the invention for illustration only in above-mentioned accompanying drawing and text, and should not be construed to protection scope of the present invention, using etc. limitation.Wherein：
Fig. 1 shares information transmission mechanisms between being shown schematically in system specified in IEEE 802.16h；
Fig. 2 is shown schematically in the frame structure for sharing information between bearing system in 802.22；
Fig. 3 is shown schematically in the double selection according to an embodiment of the invention based on to forwarding subscriber station to realize the method flow diagram of Inter-System Information interaction；
The end that Fig. 4 is shown schematically in forwarding subscriber station according to an embodiment of the invention selects schematic diagram of mechanism；
Fig. 5 is shown schematically in the structured flowchart of forwarding subscriber station according to an embodiment of the invention；
Fig. 6 is shown schematically in the structured flowchart for the purpose base station that information is shared between reception system according to an embodiment of the invention.
Embodiment
The present invention proposes a kind of based on to forwarding the double selection of SS collection so as to realize the scheme of the high efficient and reliable transmission of shared information.Specifically, by receiving the forwarding SS of shared information and the purpose BS (base stations of the information will be received）Selection twice, come determine forward described information SS, so as to reduce the problem of same shared information is transmitted several times.This will be described below in further detail.
The network environment that new scheme proposed by the invention is applied is identical with what is shown in Fig. 1.It is to be noted, however, that what the network architecture shown in Fig. 1 was merely exemplary.It will be appreciated by those skilled in the art that the quantity of BS, SS in Fig. 1 change with specific application environment, moreover, each BS may be at same type or different types of network.Although in addition, illustrate herein by taking base station BS, the subscriber station SS as an example, this does not imply that the application of the present invention is only limitted to this.For example, BS can be replaced with to access point AP etc. other kinds of communication node, SS can be replaced with to CPE, UE etc..In fact, needing shared information each other present invention can also apply to communication node but can not directly be communicated, it is necessary to which some intermediate equipments forward the network environment of the shared information.And such network environment can be it is wired can also be wireless.In this case it is exactly shared information or shared information between corresponding system above to need shared information each other.
Fig. 3 is shown schematically in the double selection according to an embodiment of the invention based on to forwarding subscriber station to realize the method flow diagram of Inter-System Information interaction.Here, for convenience of description, it illustrate only two BS and have two SS situation in overlapping region.Fig. 5 and Fig. 6 are then shown schematically in the structured flowchart for the purpose base station that information is shared between forwarding subscriber station according to an embodiment of the invention and reception system respectively.Next, we are still using each BS as a system, between BS each other between shared system exemplified by information, the method flow shown in Fig. 3 is illustrated with reference to Fig. 5 and Fig. 6.In addition, Fig. 3 illustrate only serves as the situation that message forwards task, the i.e. mode one of Fig. 1 by the SS for being subordinated to purpose base station；Mode two, i.e., serve as report by the SS for being subordinated to source base station
The situation of literary forwarding task, similar, detailed process is referring to mode one.
As shown in figure 3, first as the source base station in Fig. 1, BS1 is sent comprising the message that information is shared between system with broadcast mode（As 802.16h or 802.22 defineds such as of the prior art).
Shared between receiving system via communicator after message, by its preselector, the criterion safeguarded in criterion pond is preselected using it respectively by each SS, i.e. SS1 and SS2, to perform " pre-selection mechanism ", to determine whether it should serve as forwarding SS.Wherein, the detailed description on " pre-selection mechanism " will be given below.If SS1 and SS2 determine to serve as forwarding SS, " transmission that information is shared between system is asked " message is sent by communicator, to notify purpose BS2 to share information between having received the system for needing to transmit.It should be noted that being used for sending between system compared with the message of shared information with SS in the prior art, " the transmission request that information is shared between system " small volume here, generally only several bits may only include source base station BS1 mark.Alternatively, SS1 and SS2 can also be in incidentally mode（Piggyback style) notify BS2.In other words, each SS can increase specific field in common packet, to carry the content in " the transmission request that information is shared between system " message mentioned above.Advantage of this is that, expense can be further reduced, because individually message transmission needs the resources such as extra frame control head, channel coding/decoding, redundancy check.Here, for message is shared between the direct repeater systems of SS of the prior art, we it can also be notified to service BS the SS that passed through pre-selection process it has the process for sharing message between the system to be transmitted to be referred to as " shaking hands in advance " process.
Then, after BS2 communicator receives " the transmission request that information is shared between the system " message from SS or the notice in incidentally mode, BS2 will use " selecting mechanism eventually " by its whole screening device, made an accurate selection of with reference to its end, and the criterion safeguarded in pond determines suitably to forward SS.On the details of " selecting mechanism eventually ", it will be described in detail below.Here, it will be assumed that SS2 is selected as suitably forwarding SS.
Hereafter, the end of selection is selected result to be added in suitable message by BS2 communicator.For example as shown in figure 3, selection result is encapsulated in ULMAP by BS2 communicator
In message.Then, BS2 is that selected forwarding SS distributes up-link chance.Then, the message for carrying selection result is broadcast to SS1 and SS2 by BS2.
Each SS communicator knows corresponding selection result according to the broadcast message from BS2 received, and selected SS will be responsible for the actual transmissions of shared information between system（Forwarded by its communicator）.Here, according to the broadcast message received, SS1 has found that it is not chosen, thus shares message between the retained system of its deletion and update corresponding parameter（For example be updated to this reception time, in order to calculating hereafter to time interval the time for receiving the shared information from the base station）, for use in follow-up forwarding SS selection course.On the contrary, according to the broadcast message received, if SS2 has found that it is chosen as forwarding SS, its communicator will send the information of correlation in allocated up-link chance.That is, only selected SS just sends shared information accordingly in follow-up up-link chance.
Alternatively, in the flow chart shown in Fig. 3, BS2 only can also be notified the message comprising selection result to selected SS with mode of unicast, rather than be broadcast to each SS.In this case, as shown in figure 5, time set can be set at each SS, and specific threshold value is set for it according to specific application environment.So, when SS given notice to BS2 its have the message that information is shared between the system to be sent when, just start time set.If the timing at SS alreadys exceed threshold value and do not receive the response " the transmission request that information is shared system " message also but, its communicator shares information between just directly deleting retained system.
It should be noted that although BS2 only have selected forwarding SS, i.e. a SS2 in example shown in Fig. 3, this is for convenience of description.In fact, BS2 can select an appropriate number of forwarding SS according to specific applicable cases, BS2 is transmitted to by information is shared between the system received, the reliability of intersystem communications can be so improved.Although moreover, in this paper example, SS1 and SS2 are only located at the overlapping region of two base stations of BS1 and BS2, and in actual application, the environment of network is often more complex, and SS is likely to be located in the overlapping region of multiple base stations.In this case, if according to set criterion, the SS in the overlapping region in multiple base stations is adapted to forward
SS, then its can also by between system share information be transmitted to multiple base stations.
It should also be noted that, although BS2 is referred to as into purpose base station here, it should be appreciated to those skilled in the art that " purpose " herein be for SS current forwarding operation for, in fact its be not necessarily shared information above final or unique destination.
In addition, it will be appreciated by those skilled in the art that the flow chart shown in Fig. 3 is exemplary, part steps can be combined and/or be split as needed, moreover, the order between part steps can change.For example, BS2 can distribute corresponding up-link chance after selected SS is notified or simultaneously completely.Similarly, Fig. 5, the structure of BS shown by 6 are also exemplary, except the part shown in figure, and it can include being used for realizing its due function, or specific additional functionality part.Moreover, these parts further can be split or be combined according to the demand of application, and same physical node or the node positioned at separation can be located at according to the need for application.
From above and Fig. 3, two steps entirely are divided into the selection course for forwarding SS：" pre-selection mechanism ", " the selecting mechanism eventually " of the execution of BS places performed at SS.Both mechanism will be described in detail respectively below.
As described above, the preselector for each receiving the SS for sharing message between system performs " pre-selection mechanism ", to determine whether it should serve as forwarding SS, as shown in following formula：
Dpre—FS ~
(1) here, snew_B SRepresent whether to share message from the new outside BS coexisted beyond community between the system received.If it is, Snew_BSValue be 1, be otherwise 0.TIntervalThe time interval of message is shared between the system from same BS of expression. TThresh。ldPredetermined threshold value, and can by frequency spectrum consume shared between system information transfer it is ageing reach between the two compromise set the threshold value.It is appreciated that set TThresh。ldValue it is smaller, the frequency spectrum consumed will be more, but reliability can be higher.
By formula（1) understand, if Snew-BSValue have received the shared information between the system that the new outside BS beyond community coexists for 1, i.e. SS, then DPre_FSFor
" true ", i.e. its value are 1, represent that SS has passed through pre-selection process.In other words, forwarding SS is served as in its decision.If in addition, Snew_BSValue have received for 0, i.e. SS information, but if T shared between the system that the existing BS in community coexistsIntervalValue exceeded set threshold value, then DPre_FSAlso it is " true ".Work as DPre_FSDuring for " true ", as shown in figure 3, SS will notify it to service BS (by single message or incidentally modes）There is shared information between the system to be sent.If DPre_FSFor " vacation ", then mean SS not over pre-selection process, SS shares the transmitting procedure of information between directly logging off.
" selecting mechanism eventually " that whole screening device mentioned above by BS (such as the BS2 in Fig. 1,3) is performed, which then considers many factors, includes channel quality（Geographical position）, the remaining energy of SS, mobility, SS security etc., as shown in Figure 4.In Fig. 4, the end for being shown schematically in forwarding subscriber station according to an embodiment of the invention selects schematic diagram of mechanism.Figure 4 illustrates multiple SS for having passed through pre-selection mechanism.Wherein, the top Round rings represent that channel quality is higher than predetermined threshold value Tch_qualityForwarding SS subset；Lower right Round rings represent that remaining energy is higher than predetermined threshold value TEnergyForwarding SS subset；Lower left Round rings represent that translational speed is less than predetermined threshold value TM。bilityForwarding SS subset.Here, except translational speed, mobility can also include mobile frequency etc..
For example, S1 is located at the common overlapping region of above-mentioned San Round rings, that is to say, that S1 meets the requirement of three kinds of factors, then S1 is selected as best forwarding SS.S2 is located at the common overlapping region of both channel quality and mobility, that is to say, that S2 meets the requirement of above two factor, and then S2 is selected as the second preferred forwarding SS.Similarly, S3 and S4 can also be chosen as the second preferred forwarding SS.And S5-S10 disclosure satisfy that a kind of requirement of factor, with and they will be chosen as the 3rd preferred forwarding SS.
If there is while meeting SS, the i.e. S1 of above-mentioned three kinds of factors, then BS2 can directly select S1 as forwarding SS.If however, no SS can meet above-mentioned three kinds of factors simultaneously, that is to say, that the common overlapping region without San Ge Round rings of the SS in Fig. 4, then the second preferred forwarding SS is selected for shared information between transmission system, and this
The selection of sample can be based on actual applicable cases.For example, if the importance of energy is less than other two kinds of factors, BS2 will select S2 to share information between transmission system as forwarding SS.If not finding that best forwarding SS and second preferred forwarding SS, BS randomly will select one or several from the 3rd preferred forwarding SS（It is an appropriate number of）SS requires that it shares information between sending corresponding system as forwarding SS.
It should be noted that can be from channel quality from the aspect of two：One is channel quality between SS and outside BS, another be SS and its service channel quality between BS.That is, the forwarding SS with more preferable channel quality be those can and meanwhile meet between SS and outside BS and SS and its service the SS of the channel quality requirement between BS.Because channel quality and SS are relative to its J!The BS that is engaged in is relevant with outside BS geographical position, therefore, in some cases, SS geographical position can also as an alternate channel quality the factor being contemplated that.
Above has been given the detailed description of the thought on the present invention, the problem of it can be not only used for solving to share information transmission mechanisms between system specified in 802.16h and 802.22, and the network environment of the transmission correlation of the transmission of shared information between communication node, particularly information related to spectrum utilization in wireless environment can also be applied to, using, standard or specification.In addition, it will be appreciated by those skilled in the art that the thought of the present invention apply also for it is any need the interaction information related to resource-sharing each other, but the communicating pair that can not be directly communicated again.Such communication party can be terminal device, network node, can also be operate in some equipment, the upper layer application on node.And mentioned " information related to resource-sharing " here, referring to needs interaction, shared various information between above-mentioned communication party.
Moreover, the solution of the present invention can be realized by the software for separating or concentrating, hardware or its combination.In addition; according to content disclosed above; those skilled in the art according to specific network application environment and can need to carry out various changes, replacements, combination, fractionation etc., as long as it just falls under the scope of the present invention without departing from thought of the invention.
Claims (1)
- Claim1. a kind of be used for the method for the shared information of the interaction between communication unit, wherein, communicated between the communication unit by least one retransmission unit, methods described includes step：When the retransmission unit receives the shared information from least one communication unit, judge whether to need to forward that information at least one other communication unit；If necessary to forward, then the reception of other communication unit described informations is notified；Receive after the notice from retransmission unit at least one described, other described communication units select suitable retransmission unit at least to be notified to selected retransmission unit to forward described information, and by selection result from least one retransmission unit described in being given notice to it；Receive after the notice from other communication units, the shared information received is transmitted to other described communication units by selected retransmission unit.2. the method as described in claim 1, wherein the communication unit is at least one in wireless communication unit, base station or access point, or the retransmission unit is at least one in wireless forwarding unit, subscriber station or client device.3. the method as described in foregoing any claim, wherein being provided to the retransmission unit from sending the communication unit of shared information or the communication unit for the notice for receiving the retransmission unit to the retransmission unit and being serviced or be managed to it.4. the method for claim 1, wherein the shared information is related to the spectrum utilization in wireless network.5. the method as described in foregoing any claim, wherein, other described communication units with broadcast mode by selection result notify to oriented its have issued the retransmission unit of notice, or selection result is notified to selected retransmission unit with unicast or multicast or multicast.6. the method as described in foregoing any claim, wherein, have learned that community coexists in the communication unit composition of mutual shared information, the retransmission unit at least be made whether the decision for needing to forward based on one of the following：Whether the shared information received comes from New communication unit beyond coexisting body；Communication unit of the shared information received in coexisting body, at least a portion of the information whether beyond setting threshold value.7. the method as described in foregoing any claim, wherein, other described communication units select suitable retransmission unit at least based on one of the following：Channel quality, geographical position, power, mobility, security.8. a kind of be used for the retransmission unit of the shared information of the interaction between communication unit, wherein, communicated between the communication unit by retransmission unit at least one described, the retransmission unit is used for when receiving from the shared information of communication unit at least one described, judges whether to need to forward that information at least one other communication unit；For if it is required, then notifying the reception of other communication unit described informations；For when receiving the notice of the relevant forwarding from other communication units, the shared information received to be transmitted into other described communication units.9. retransmission unit as claimed in claim 8, wherein, the retransmission unit is additionally operable to start timing after the reception of other communication unit described informations is notified, when the threshold value more than setting is also not received by the notice of the relevant forwarding from other communication units, the shared information received is abandoned；The retransmission unit alternatively also remains with the criterion for judging whether to need to carry out the forwarding.10. a kind of be used for the retransmission unit of the shared information of the interaction between communication unit, wherein, communicated between the communication unit by retransmission unit at least one described, the retransmission unit includes：Preselector, for when receiving from the shared information of communication unit at least one described, judging whether to need to forward that information at least one other communication unit；Communicator, for when needing the forwarding, the reception of other communication unit described informations is notified, and when receiving the notice of the relevant forwarding from other communication units, the shared information received is transmitted to other described communication units.11. retransmission unit as claimed in claim 10, it also includes：Time set, for starting timing after the reception of other communication unit described informations is notified, when the threshold value more than setting is also not received by the relevant forwarding from other communication units During notice, the shared information received is abandoned by the communicator；The retransmission unit alternatively also includes the pre-selection criterion pond for maintenance philosophy, and criterion of the preselector in pre-selection criterion pond judges whether to need to carry out the forwarding.12. the retransmission unit as described in any of claim 8 to 11, wherein, have learned that community coexists in the communication unit composition of mutual shared information, the retransmission unit at least be made whether the decision for needing to forward based on one of the following：The shared information received whether the new communication unit beyond coexisting body；Communication unit of the shared information received in coexisting body, at least a portion of the information whether beyond setting threshold value.13.-kind it is used for method that shared information is forwarded between communication unit, wherein, communicated between the communication unit by retransmission unit at least one described, methods described includes step：When the retransmission unit is received from the shared information of communication unit at least one described, judge whether to need to forward that information at least one other communication unit；If it is required, then notifying the reception of other communication unit described informations；When receiving the notice of the relevant forwarding from other communication units, the shared information received is transmitted to other described communication units.14. a kind of communication unit for being used to interact shared information with other communication units, the communication unit is communicated by least one retransmission unit with other described communication units, the communication unit is used for after the notice for receiving shared information from retransmission unit at least one described is received, and suitable retransmission unit is selected from least one retransmission unit described in being given notice to it to forward described information；For selection result at least to be notified to selected retransmission unit；For receiving the shared information from selected retransmission unit.15. communication unit as claimed in claim 14, the communication unit with broadcast mode by selection result notify to oriented its have issued the retransmission unit of notice, or selection result is notified to selected retransmission unit with unicast or multicast or multicast.16. the communication unit as described in claims 14 or 15, the communication unit selects suitable retransmission unit at least based on one of the following：Channel quality, geographical position, work( Rate, mobility, security.17. a kind of communication unit for being used to interact shared information with other communication units, the communication unit is communicated by least one retransmission unit with other described communication units, the communication unit includes：Whole screening device, for receiving after the notice from retransmission unit at least one described receives the notice of shared information, selects suitable retransmission unit to forward described information from least one retransmission unit described in being given notice to it；Communicator, at least notifying selection result to selected retransmission unit, and receives the shared information from selected retransmission unit.18. communication unit as claimed in claim 17, wherein, the communicator with broadcast mode by selection result notify to oriented its have issued the retransmission unit of notice, or selection result is notified to selected retransmission unit with unicast or multicast or multicast.19. the communication unit as described in claim 17 or 18, wherein, the whole screening device selects suitable retransmission unit at least based on one of the following：Channel quality, geographical position, power, mobility, security.20. the communication unit as described in any of claim 14 to 19, wherein, the shared information is related to the spectrum utilization in wireless network.21. being communicated between a kind of method for being used to interact shared information with other communication units, the communication unit by least one retransmission unit, methods described includes step：Receiving after the notice from retransmission unit at least one described receives the notice of shared information, suitable retransmission unit is selected from least one retransmission unit described in being given notice to it to forward described information；Selection result is at least notified to selected retransmission unit, and receive the shared information from selected retransmission unit.22. a kind of be used for the system of the shared information of the interaction between communication unit, it includes the retransmission unit as described in any of claim 8 to 12, and the communication unit as described in any of claim 14 to 20.23. a kind of computer program product, it includes the executable program code of computer, for performing the method as described in any of claim 1 to 7 or claim 13 or 21, or the retransmission unit as described in any of claim 8 to 12, or the communication unit as described in any of claim 14 to 20, or the system as claimed in claim 22.
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| PCT/CN2009/070885 WO2010105425A1 (en) | 2009-03-19 | 2009-03-19 | Method, device and computer program for interacting shared information between communication units |
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| WO2010105425A1 (en) | 2010-09-23 |
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