CN102439864B - Methods for transmitting message, methods for storing information, message transmission devices and information storage devices - Google Patents

Methods for transmitting message, methods for storing information, message transmission devices and information storage devices Download PDF

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Publication number
CN102439864B
CN102439864B CN201080022550.3A CN201080022550A CN102439864B CN 102439864 B CN102439864 B CN 102439864B CN 201080022550 A CN201080022550 A CN 201080022550A CN 102439864 B CN102439864 B CN 102439864B
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China
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mentioned
equipment
radio communication
communication equipment
receiving area
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CN102439864A (en
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艾南斯·苏布拉玛南
彭晓明
陈保善
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Agency for Science Technology and Research Singapore
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Agency for Science Technology and Research Singapore
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

In an embodiment, a method for transmitting a message may be provided. The method may include: generating a message including information specifying a radio wave transmission/reception region out of a plurality of radio wave transmission/reception region candidates which specified radio wave transmission/reception region a first radio communication device configured to perform directional radio communication may use for communication with a second radio communication device; and transmitting the generated message.

Description

Method for message transmission, information storage means and message transmission equipment, information storing device
Technical field
Embodiment of the present invention relate to method for message transmission, information storage means, message transmission equipment and information storing device.
Background technology
The demand of Radio Data-transmission bandwidth is constantly increased.But the resource (such as frequency) that can be used for radio communication is limited.
Therefore, be the overall data transmission capacity of satisfied increase, need to provide the method and apparatus that effectively can use radio resource.
Summary of the invention
In various embodiments, method for message transmission, information storage means, message transmission equipment and information storing device can be provided.Described method for message transmission can comprise: produce the message comprising information, described information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, and the first radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the second radio communication equipment; With the message that transmission produces.The method of described storage information can comprise: receiving package is containing the message of information, described information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, and the first radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the second radio communication equipment; And store the described information be included in received message.Described message transmission equipment can comprise: message generator, it is configured to produce the message comprising information, described information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, and the first radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the second radio communication equipment; And transmitter, it is configured to transmit the described message produced by described message generator.Described information storing device can comprise: message receiver, it is configured to the message of receiving package containing information, described information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, and the first radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the second radio communication equipment; And memory, it is configured to store the described information be included in described message.
Accompanying drawing explanation
In accompanying drawing, identical Reference numeral is often referred to for part identical between different accompanying drawing.Accompanying drawing is not pro rata, on the contrary, usually can focus in the principle of each embodiment of explanation.In the following description, contrast accompanying drawing below describes each embodiment of the present invention, wherein:
Fig. 1 shows the flow chart represented according to the method for message transmission of embodiment;
Fig. 2 shows the flow chart represented according to the information storage means of embodiment;
Fig. 3 shows the message transmission equipment according to embodiment;
Fig. 4 shows the information storing device according to embodiment;
Fig. 5 shows the information storing device according to embodiment;
Fig. 6 shows the flow chart represented according to the radio wave transmissions/receiving area defining method of embodiment;
Fig. 7 shows the flow chart represented according to the radio wave transmissions/receiving area defining method of embodiment;
Fig. 8 shows the radio wave transmissions/receiving area certainty annuity according to embodiment;
Fig. 9 shows the topology information element format according to embodiment;
Figure 10 shows the device network according to embodiment;
Figure 11 shows the payload of the request transmission frame according to embodiment;
Figure 12 shows the payload of the clear to send frame according to embodiment;
Figure 13 shows the reserved diagram according to embodiment;
Figure 14 shows the reserved diagram according to embodiment;
Figure 15 shows the diagram transmitted in beacon slot according to embodiment beacon;
Figure 16 shows the discovery data block according to embodiment;
Figure 17 shows the paired discovery data block according to embodiment;
Figure 18 shows the topology information element format according to embodiment;
Figure 19 shows the superframe structure according to embodiment;
Figure 20 shows the payload format of the topology order/control frame according to embodiment;
Figure 21 shows and represents according to the various spatial reuse strategy of embodiment and the figure of device discovery strategy;
Figure 22 shows the topology information element format according to embodiment;
Figure 23 shows CF (uncontested) the poll response frame according to embodiment;
Figure 24 shows the device discovery claim frame according to embodiment;
Figure 25 shows the device discovery response frame according to embodiment;
Figure 26 shows the figure represented according to frame affairs in embodiment uncontended periods (CFP);
Figure 27 shows the discovery data block according to embodiment; And
Figure 28 shows the paired discovery data block according to embodiment.
Embodiment
Describe the present invention below in conjunction with accompanying drawing, wherein above-mentioned accompanying drawing illustrates specific detail in an illustrative manner and can implement embodiments of the invention.These embodiments are described in sufficient detail, to enable those skilled in the art to implement the present invention.In the case without departing from the scope of the present invention, other embodiment can be used, and can carry out structure, logic and electrically on change.Non-exclusive between each embodiment, because some embodiments can be combined with other embodiment one or more and form new embodiment.
Word used herein " exemplary " refers to " as example, example or explanation ".Any embodiment described as " exemplary " herein or design are not necessarily preferred relative to other embodiment or design or more favorably.
Each equipment (being hereafter described in more detail to it) according to each embodiment can be included in the memory used in the process such as performed by each equipment.
In an embodiment, the logic that " circuit " can be understood as any kind performs entity, and it can be the special circuit or the processor that perform the software be stored in memory, firmware or their any combination.Therefore, in an embodiment, " circuit " can be hard-wired logic circuit or the Programmable Logic Device as programmable processor, such as microprocessor (such as complex instruction set computer (CISC) (CISC) processor or Reduced Instruction Set Computer (RISC) processor)." circuit " can also be the processor of executive software (the such as computer program of any kind, as Java).Hereafter the implementation of other kind any of each function in greater detail also be can be understood as " circuit " according to embodiment.
Fig. 1 shows the flow process Figure 100 represented according to the method for message transmission of embodiment.In a step 102, the message comprising information can be produced, this information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, and the first radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the second radio communication equipment.At step 104, produced message can be transmitted.
In various embodiments, above-mentioned message can comprise information further, this information specifies multiple radio wave transmissions/receiving area from above-mentioned multiple radio wave transmissions/receiving area candidate, and above-mentioned first radio communication equipment can use specified multiple radio wave transmissions/receiving areas to communicate with above-mentioned second radio communication equipment.
In various embodiments, above-mentioned message can produce in above-mentioned second radio communication equipment.
In various embodiments, the message produced can be sent by the second radio communication equipment.
In various embodiments, above-mentioned message can comprise information further, this information specifies respective radio wave transmissions/receiving area from respective multiple radio wave transmissions/receiving area candidate, is configured to perform radio communication equipment other separately in the one or more other radio communication equipment of oriented radio communication and can uses specified radio wave transmissions/receiving area to communicate with above-mentioned second radio communication equipment.
In various embodiments, above-mentioned first radio communication equipment sequentially can transmit the first signal, secondary signal and the 3rd signal, above-mentioned first signal is omni-direction transmissions, above-mentioned secondary signal is transmitted in the first radio wave transmissions/receiving area, and above-mentioned 3rd signal transmits in the second radio wave transmissions/receiving area; Above-mentioned second radio communication equipment can receive above-mentioned first signal from above-mentioned first radio communication equipment in first time of reception and receive above-mentioned secondary signal and above-mentioned 3rd signal in second time of reception from above-mentioned first radio communication equipment; And above-mentioned second radio communication equipment can determine radio wave transmissions/receiving area that above-mentioned first radio communication equipment can be used for communicating with above-mentioned second radio communication equipment according to the difference between above-mentioned first time of reception and above-mentioned second time of reception.
In various embodiments, the radio communication technology different from the radio communication technology for above-mentioned oriented radio communication can be used to send in above-mentioned first signal, above-mentioned secondary signal and above-mentioned 3rd signal at least one.
In various embodiments, above-mentioned first signal, above-mentioned secondary signal and the scope of at least one in above-mentioned 3rd signal can be identical in fact or identical in fact with the scope of the radio communication technology for above-mentioned oriented radio communication.
In various embodiments, can use at least one in radio communication technology transmission above-mentioned first signal, above-mentioned secondary signal and above-mentioned 3rd signal of above-mentioned oriented radio communication.
In various embodiments, at least one in above-mentioned first signal, above-mentioned secondary signal and above-mentioned 3rd signal can comprise the information identifying above-mentioned first radio communication equipment.
In various embodiments, above-mentioned message can produce in above-mentioned first radio communication equipment.
In various embodiments, the message produced can be transmitted by above-mentioned first radio communication equipment.
In various embodiments, above-mentioned message can comprise information further, this information specifies one or more radio wave transmissions/receiving area other separately from above-mentioned multiple radio wave transmissions/receiving area candidate, and above-mentioned first radio communication equipment can use specified one or more radio wave transmissions/receiving areas other separately to communicate with one or more radio communication equipment other separately.
In various embodiments, above-mentioned second radio communication equipment can omni-directionally signal transmission, above-mentioned first radio communication equipment can sequentially judge, whether by the first signal of above-mentioned second radio communication equipment omni-direction transmissions can be received in the first radio wave transmissions/receiving area in first time of reception and whether can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of above-mentioned second radio communication equipment omni-direction transmissions, and above-mentioned first radio communication equipment can according to the above-mentioned judgement that whether by the first signal of above-mentioned second radio communication equipment omni-direction transmissions can be received in the first radio wave transmissions/receiving area in first time of reception and whether can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of above-mentioned second radio communication equipment omni-direction transmissions, determine radio wave transmissions/receiving area that above-mentioned first radio communication equipment can be used for communicating with above-mentioned second radio communication equipment.
In various embodiments, in above-mentioned first time of reception, can activate the above-mentioned first radio wave transmissions/receiving area of above-mentioned first radio communication equipment receiving circuit and can the receiving circuit of all other the radio wave transmissions/receiving areas of deexcitation except the above-mentioned first radio wave transmissions/receiving area of above-mentioned first radio communication equipment.Therefore, in above-mentioned first time of reception, above-mentioned first radio communication equipment only can use the receiving circuit Received signal strength of its above-mentioned first radio wave transmissions/receiving area.
In various embodiments, in above-mentioned second time of reception, the receiving circuit of the above-mentioned second radio wave transmissions/receiving area of above-mentioned first radio communication equipment can be activated, and can the receiving circuit of all other the radio wave transmissions/receiving areas of deexcitation except the above-mentioned second radio wave transmissions/receiving area of above-mentioned first radio communication equipment.Therefore, in above-mentioned second time of reception, above-mentioned first radio communication equipment only can use the receiving circuit Received signal strength of its above-mentioned second radio wave transmissions/receiving area.
In various embodiments, the radio communication technology different from the radio communication technology for above-mentioned oriented radio communication can be used to send the signal of institute's omni-direction transmissions.
In various embodiments, the radio communication technology for above-mentioned oriented radio communication can be used to send the signal of institute's omni-direction transmissions.
In various embodiments, the scope of the signal of institute's omni-direction transmissions can be identical in fact with the scope of the radio communication technology for above-mentioned oriented radio communication.
In various embodiments, the signal of institute's omni-direction transmissions can comprise the information identifying above-mentioned second radio communication equipment.
In various embodiments, above-mentioned message can produce in another radio communication equipment different with above-mentioned second radio communication equipment from above-mentioned first radio communication equipment.
In various embodiments, above-mentioned second radio communication equipment can be configured to perform oriented radio communication.
In various embodiments, the message produced can be transmitted in frame according to being selected from following standard: WiMedia standard, ECMA standard, IEEE 802.11 standard, IEEE 802.15.3 standard, IEEE 802.15.3b standard and IEEE 802.15.3c standard.
In various embodiments, the message produced can transmission in information element (IE).
In various embodiments, in above-mentioned multiple radio wave transmissions/receiving area, at least one radio wave transmissions/receiving area can comprise the sector that limited by the angular domain relative to above-mentioned first radio communication equipment preset at least partially.
In various embodiments, above-mentioned multiple radio wave transmissions/receiving area can comprise multiple parts of multiple sector, and wherein, each sector can be limited by the angular domain relative to above-mentioned first radio communication equipment preset.
In various embodiments, the angle of the above-mentioned angular domain of above-mentioned multiple sector in each can be equal.
In various embodiments, above-mentioned multiple sector in each the angle of at least two angular domains can be different.
In various embodiments, in above-mentioned multiple radio wave transmissions/receiving area, at least one radio wave transmissions/receiving area can comprise the region that limited by the region between the first half sidelines and the second half sidelines at least partially, above-mentioned the first half sidelines are from the first preset of above-mentioned first radio communication equipment and the first predetermined angle had about above-mentioned first radio communication equipment, above-mentioned the second half sidelines are from the second preset of above-mentioned first radio communication equipment and the second predetermined angle had about above-mentioned first radio communication equipment.
In various embodiments, when not setting up radio communication connection between above-mentioned first radio communication equipment and above-mentioned second radio communication equipment, above-mentioned message can be produced.
In various embodiments, when not setting up the radio communication connection exchanged for user data between above-mentioned first radio communication equipment and above-mentioned second radio communication equipment, above-mentioned message can be produced.
In various embodiments, the message transmitted can receive in the 3rd radio communication equipment.
In various embodiments, above-mentioned 3rd radio communication equipment can be configured to perform oriented radio communication.
In various embodiments, in at least one in above-mentioned first radio communication equipment and above-mentioned second radio communication equipment, the topological matrix comprising information can be stored, this information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, and the 3rd radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the 4th radio communication equipment.
Fig. 2 shows the flow process Figure 200 represented according to embodiment information storage means.In step 202., can receiving package containing the message of information, this information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, and the first radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the second radio communication equipment.In step 204, the above-mentioned information be included in received message can be stored.
In various embodiments, above-mentioned message can comprise information further, this information specifies multiple radio wave transmissions/receiving area from above-mentioned multiple radio wave transmissions/receiving area candidate, and above-mentioned first radio communication equipment can use specified radio wave transmissions/receiving area to communicate with above-mentioned second radio communication equipment.
In various embodiments, one or more other message can be received, the other message of every bar comprises respective information, this respective information specifies radio wave transmissions/receiving area other separately from respective multiple other radio wave transmissions/receiving area candidate, the the first other separately radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area other separately to communicate with the second other separately radio communication equipment, and the above-mentioned respective information be included in received above-mentioned one or more other message can be stored.
In various embodiments, can receive and store the information having started between expression the 5th radio communication equipment and the 6th radio communication equipment to communicate.
In various embodiments, above-mentioned message can receive in the 3rd radio communication equipment being configured to perform oriented radio communication in multiple radio wave transmissions/receiving area, and the above-mentioned information be included in received message can be stored in above-mentioned 3rd radio communication equipment.
In various embodiments, when starting to communicate with the 4th radio communication equipment to above-mentioned 3rd radio communication equipment request, can determine whether according to stored information to start to communicate with described 4th radio communication equipment.In various embodiments, above-mentioned deterministic process can be performed by above-mentioned 3rd radio communication equipment.In various embodiments, above-mentioned deterministic process can be performed by the radio communication equipment preset different from above-mentioned 3rd radio communication equipment.In various embodiments, above-mentioned deterministic process can be performed by the radio resource manager of above-mentioned radio communication equipment outside.
In various embodiments, when starting to communicate with the 4th radio communication equipment to above-mentioned 3rd radio communication equipment request, radio wave transmissions/receiving area that above-mentioned 3rd radio communication equipment can be used for communicating with above-mentioned 4th radio communication equipment can be determined, and when starting to communicate with the 4th radio communication equipment to above-mentioned 3rd radio communication equipment request, if determined radio wave transmissions/receiving area can be used for above-mentioned 5th radio communication equipment and above-mentioned 6th radio communication equipment, one of them carries out radio communication, so can determine not start to communicate with above-mentioned 4th radio communication equipment.
In various embodiments, when starting to communicate with the 4th radio communication equipment to above-mentioned 3rd radio communication equipment request, can determine according to stored information and the communication start time that above-mentioned 4th radio communication equipment communicates.In various embodiments, above-mentioned deterministic process can be performed by above-mentioned 3rd radio communication equipment.In various embodiments, above-mentioned deterministic process can be performed by the radio communication equipment preset different from above-mentioned 3rd radio communication equipment.In various embodiments, above-mentioned deterministic process can be performed by the radio resource manager of above-mentioned radio communication equipment outside.
In various embodiments, when starting to communicate with the 4th radio communication equipment to above-mentioned 3rd radio communication equipment request, radio wave transmissions/receiving area that above-mentioned 3rd radio communication equipment can be used for communicating with above-mentioned 4th radio communication equipment can be determined, and when starting to communicate with the 4th radio communication equipment to above-mentioned 3rd radio communication equipment request, if determined radio wave transmissions/receiving area can be used for carrying out radio communication with in above-mentioned 5th radio communication equipment and above-mentioned 6th radio communication equipment, so above-mentioned communication start time can be defined as being equal to or greater than the residue call duration time between above-mentioned 5th radio communication equipment and above-mentioned 6th radio communication equipment.
In various embodiments, can determine to be used for above-mentioned 5th radio communication equipment and above-mentioned 6th radio communication equipment that one of them carries out the radio wave transmissions/receiving area of radio communication, and the connection that can arrange for determined radio wave transmissions/receiving area starts restriction.
In various embodiments, can receive the information about call duration time between above-mentioned 5th radio communication equipment and above-mentioned 6th radio communication equipment, and the restriction of above-mentioned connection time started can be arranged at least continue the call duration time between above-mentioned 5th radio communication equipment and above-mentioned 6th radio communication equipment.
Fig. 3 shows the message transmission equipment 300 according to embodiment.Above-mentioned message transmission equipment 300 can comprise message generator 302 and transmitter 304, above-mentioned message generator 302 is configured to produce the message comprising information, this information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, the first radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the second radio communication equipment, and above-mentioned transmitter 304 is configured to transmit the above-mentioned message produced by above-mentioned message generator 302.Above-mentioned message generator 302 and above-mentioned transmitter 304 can such as be connected to each other by electrical connection 306 (such as cable or computer bus) or by any electrical connection that other is applicable to, with switching telecommunication number.
In various embodiments, above-mentioned message can comprise information further, this information specifies multiple radio wave transmissions/receiving area from above-mentioned multiple radio wave transmissions/receiving area candidate, and above-mentioned first radio communication equipment can use specified radio wave transmissions/receiving area to communicate with above-mentioned second radio communication equipment.
In various embodiments, above-mentioned message transmission equipment 300 can be configured to be arranged in above-mentioned second radio communication equipment.In other words, the second radio communication equipment can be provided and it can comprise above-mentioned message transmission equipment 300.
In various embodiments, above-mentioned message can comprise information further, this information specifies respective radio wave transmissions/receiving area from respective multiple radio wave transmissions/receiving area candidate, is configured to perform radio communication equipment other separately in the one or more other radio communication equipment of oriented radio communication and can uses specified respective radio wave transmissions/receiving area to communicate with above-mentioned second radio communication equipment.
In various embodiments, above-mentioned first radio communication equipment can be configured to sequentially transmit the first signal further, secondary signal and the 3rd signal, above-mentioned first signal is omni-direction transmissions, above-mentioned secondary signal is transmitted in the first radio wave transmissions/receiving area, above-mentioned 3rd signal transmits in the second radio wave transmissions/receiving area, above-mentioned second radio communication equipment can be configured to further, receive above-mentioned first signal from above-mentioned first radio communication equipment in first time of reception and to receive above-mentioned secondary signal and above-mentioned 3rd signal in second time of reception from above-mentioned first radio communication equipment, and above-mentioned second radio communication equipment can be configured to further, above-mentioned radio wave transmissions/receiving area that above-mentioned first radio communication equipment can be used for communicating with above-mentioned second radio communication equipment is determined according to the difference between above-mentioned first time of reception and above-mentioned second time of reception.
In various embodiments, above-mentioned first signal, above-mentioned secondary signal can use the radio communication technology different from the radio communication technology for above-mentioned oriented radio communication to send with at least one in above-mentioned 3rd signal.
In various embodiments, above-mentioned first signal, above-mentioned secondary signal can be identical in fact with the scope of the radio communication technology for above-mentioned oriented radio communication with the scope of at least one in above-mentioned 3rd signal.
In various embodiments, at least one in above-mentioned first signal, above-mentioned secondary signal and above-mentioned 3rd signal can use the radio communication technology for above-mentioned oriented radio communication to send.
In various embodiments, at least one in above-mentioned first signal, above-mentioned secondary signal and above-mentioned 3rd signal can comprise the information identifying above-mentioned first radio communication equipment.
In various embodiments, above-mentioned message transmission equipment 300 can be arranged in above-mentioned first radio communication equipment.In other words, the first radio communication equipment can be provided and it can comprise above-mentioned message transmission equipment 300.
In various embodiments, above-mentioned message can comprise information further, this information specifies one or more radio wave transmissions/receiving area other separately from above-mentioned multiple radio wave transmissions/receiving area candidate, and above-mentioned first radio communication equipment can use specified one or more radio wave transmissions/receiving areas other separately to communicate with one or more radio communication equipment other separately.
In various embodiments, above-mentioned second radio communication equipment can be configured to omni-directionally signal transmission, above-mentioned first radio communication equipment can be configured to sequentially judge further, whether by the first signal of above-mentioned second radio communication equipment omni-direction transmissions can be received in the first radio wave transmissions/receiving area in first time of reception and whether can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of above-mentioned second radio communication equipment omni-direction transmissions, and above-mentioned first radio communication equipment can be configured to further, according to the above-mentioned judgement that whether by the first signal of above-mentioned second radio communication equipment omni-direction transmissions can be received in the first radio wave transmissions/receiving area in first time of reception and whether can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of above-mentioned second radio communication equipment omni-direction transmissions, determine radio wave transmissions/receiving area that above-mentioned first radio communication equipment can be used for communicating with above-mentioned second radio communication equipment.
In various embodiments, above-mentioned message transmission equipment 300 may further include the first receiving circuit and the second receiving circuit, above-mentioned first receiving circuit is configured to transmitting/receiving signal in above-mentioned first radio wave transmissions/receiving area, above-mentioned second receiving circuit is configured to provide transmitting/receiving signal in above-mentioned second radio wave transmissions/receiving area, wherein, above-mentioned first radio communication equipment can be configured to activate above-mentioned first receiving circuit and above-mentioned second receiving circuit of deexcitation in above-mentioned first time of reception further.Therefore, in above-mentioned first time of reception, above-mentioned first radio communication equipment only can use its first receiving circuit Received signal strength.
Should note, although above-mentioned first receiving circuit and above-mentioned second receiving circuit have been described as being arranged in the above-mentioned message transmission equipment 300 that can be provided in above-mentioned second radio communication equipment hereinbefore, above-mentioned first receiving circuit and above-mentioned second receiving circuit can also be arranged in above-mentioned second radio communication equipment of above-mentioned message transmission equipment 300 outside.
In various embodiments, above-mentioned first radio communication equipment can be configured to activate above-mentioned second receiving circuit and above-mentioned first receiving circuit of deexcitation in above-mentioned second time of reception further.Therefore, in above-mentioned second time of reception, above-mentioned first radio communication equipment only can use its second receiving circuit Received signal strength.
In various embodiments, the signal of institute's omni-direction transmissions can use the radio communication technology different from the radio communication technology for above-mentioned oriented radio communication to send.
In various embodiments, the signal of institute's omni-direction transmissions can use the radio communication technology for above-mentioned oriented radio communication to send.
In various embodiments, the scope of the signal of institute's omni-direction transmissions can be identical in fact with the scope of the radio communication technology for above-mentioned oriented radio communication.
In various embodiments, the signal of institute's omni-direction transmissions can comprise the information identifying above-mentioned second radio communication equipment.
In various embodiments, above-mentioned message transmission equipment 300 can be configured to be arranged in the other radio communication equipment different with above-mentioned second radio communication equipment from above-mentioned first radio communication equipment.In other words, the other radio communication equipment different with above-mentioned second radio communication equipment from above-mentioned first radio communication equipment can be provided, and this other radio communication equipment can comprise above-mentioned message transmitting apparatus.
In various embodiments, above-mentioned message can produce in the other radio communication equipment different with above-mentioned second radio communication equipment from above-mentioned first radio communication equipment.
In various embodiments, above-mentioned second radio communication equipment can be configured to perform oriented radio communication.
In various embodiments, above-mentioned transmitter 304 can be configured in frame, transmit produced message according to the standard be selected from following standard further: WiMedia standard, ECMA standard, IEEE 802 standard, IEEE 802.11 standard, IEEE 802.15.3 standard, IEEE 802.15.3b standard, IEEE 802.15.3c standard and ultra broadband (Ultra Wide Band) standard.
In various embodiments, above-mentioned transmitter 304 can be configured in information element, transmit produced message further.
In various embodiments, at least one the radio wave transmissions/receiving area in above-mentioned multiple radio wave transmissions/receiving area can comprise the sector that limited by the angular domain relative to above-mentioned first radio communication equipment preset at least partially.
In various embodiments, above-mentioned multiple radio wave transmissions/receiving area can comprise multiple parts of multiple sector, and wherein, each sector can be limited by the angular domain relative to above-mentioned first radio communication equipment preset.
In various embodiments, the angle of the above-mentioned angular domain of above-mentioned multiple sector in each can be equal.
In various embodiments, the angle of at least two angular domains of above-mentioned multiple sector in each can be different.
In various embodiments, at least one radio wave transmissions/receiving area in above-mentioned multiple radio wave transmissions/receiving area can comprise the region that limited by the region between the first half sidelines and the second half sidelines at least partially, above-mentioned the first half sidelines are from the first preset of above-mentioned first radio communication equipment and the first predetermined angle had about above-mentioned first radio communication equipment, above-mentioned the second half sidelines are from the second preset of above-mentioned first radio communication equipment and the second predetermined angle had about above-mentioned first radio communication equipment.
In various embodiments, above-mentioned message generator 302 can be configured to further not set up between above-mentioned first radio communication equipment and above-mentioned second radio communication equipment when radio communication connects and produce above-mentioned message.
In various embodiments, above-mentioned message generator 302 can be configured to further not set up between above-mentioned first radio communication equipment and above-mentioned second radio communication equipment when the radio communication exchanged for user data connects and produce above-mentioned message.
In various embodiments, the message transmitted can receive in the 3rd radio communication equipment.
In various embodiments, above-mentioned 3rd radio communication equipment can be configured to perform oriented radio communication.
In various embodiments, at least one in above-mentioned first radio communication equipment and above-mentioned second radio communication equipment can be configured to store the topological matrix comprising information, this information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, and the 3rd radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the 4th radio communication equipment.
Fig. 4 illustrates the information storing device 400 according to embodiment.Above-mentioned information storing device 400 can comprise message receiver 402 and memory 404, above-mentioned message receiver 402 is configured to the message of receiving package containing information, this information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, the first radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the second radio communication equipment, and above-mentioned memory 404 is configured to be stored in above-mentioned message the above-mentioned information comprised.Above-mentioned message receiver 402 and above-mentioned memory 404 can such as be connected to each other by electrical connection 406 (such as cable or computer bus) or by any electrical connection that other is applicable to, with switching telecommunication number.
In various embodiments, above-mentioned message can comprise information further, this information specifies multiple radio wave transmissions/receiving area from above-mentioned multiple radio wave transmissions/receiving area candidate, and above-mentioned first radio communication equipment can use specified radio wave transmissions/receiving area to communicate with above-mentioned second radio communication equipment.
In various embodiments, above-mentioned message receiver 402 can be configured to the other message of reception one or more further, the other message of every bar comprises respective information, this respective information specifies radio wave transmissions/receiving area other separately from respective multiple other radio wave transmissions/receiving area candidate, the the first other separately radio communication equipment being configured to perform oriented radio communication can use specified respective radio wave transmissions/receiving area to communicate with the second other separately radio communication equipment, and memory 404 can be configured to store the above-mentioned respective information be included in received above-mentioned one or more other message further.
In various embodiments, above-mentioned information storing device 400 can be configured to further receive and store information, and this information represents that the communication between the 5th radio communication equipment and the 6th radio communication equipment starts.
In various embodiments, above-mentioned information storing device 400 can be configured to communicate with the 3rd radio communication equipment further, and above-mentioned 3rd radio communication equipment is configured to perform oriented radio communication in multiple radio wave transmissions/receiving area.
Fig. 5 illustrates the information storing device 500 according to embodiment.Above-mentioned information storing device 500 is similar with the above-mentioned information storing device 400 of Fig. 4, can comprise message receiver 402 and memory 404.Above-mentioned message receiver 402 is configured to the message of receiving package containing information, this information comprises specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, the first radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the second radio communication equipment, and above-mentioned memory 404 is configured to store the above-mentioned information be included in above-mentioned message.Above-mentioned information storing device 500 may further include communication and starts determiner 502 (will illustrate in greater detail it after a while).Above-mentioned information storing device 500 may further include communication start time determiner 504 (will illustrate in greater detail it after a while).Above-mentioned information storing device 500 may further include the opposing party's radio wave transmissions/receiving area determiner 506 (will illustrate in greater detail it after a while).Above-mentioned information storing device 500 may further include communication to start restriction and arranges device 508 (will illustrate in greater detail it after a while).Above-mentioned message receiver 402, above-mentioned memory 404, above-mentioned communication start determiner 502, above-mentioned communication start time determiner 504, above-mentioned the opposing party radio wave transmissions/receiving area determiner 506 and above-mentioned communication start restriction arrange device 508 can such as by electrical connection 510 (such as cable or computer bus) or by any other be applicable to electrical connection and be connected to each other, with switching telecommunication number.
In various embodiments, above-mentioned communication starts determiner 502 and can be configured to when starting to communicate with the 4th radio communication equipment to above-mentioned 3rd radio communication equipment request, determines whether to start to communicate with above-mentioned 4th radio communication equipment according to the above-mentioned information stored in above-mentioned memory 404.
In various embodiments, when starting to communicate with the 4th radio communication equipment to above-mentioned 3rd radio communication equipment request, radio wave transmissions/receiving area that above-mentioned 3rd radio communication equipment can be used for communicating with above-mentioned 4th radio communication equipment can be determined, and when starting to communicate with the 4th radio communication equipment to above-mentioned 3rd radio communication equipment request, if determined radio wave transmissions/receiving area can be used for carrying out radio communication with in above-mentioned 5th radio communication equipment and above-mentioned 6th radio communication equipment, so can determine not start to communicate with the 4th radio communication equipment.In various embodiments, above-mentioned deterministic process can be performed by above-mentioned 3rd radio communication equipment.In various embodiments, above-mentioned deterministic process can be performed by the radio communication equipment preset different from above-mentioned 3rd radio communication equipment.In various embodiments, above-mentioned deterministic process can be performed by the radio resource manager of above-mentioned Wireless Telecom Equipment outside.
In various embodiments, above-mentioned communication start time determiner 504 can be configured to, when starting to communicate with the 4th radio communication equipment to above-mentioned 3rd radio communication equipment request, determine and the communication start time that above-mentioned 4th radio communication equipment communicates according to stored information.In various embodiments, above-mentioned deterministic process can be performed by above-mentioned 3rd radio communication equipment.In various embodiments, above-mentioned deterministic process can be performed by the radio communication equipment preset different from above-mentioned 3rd radio communication equipment.In various embodiments, above-mentioned deterministic process can be performed by the radio resource manager of above-mentioned radio communication equipment outside.
In various embodiments, above-mentioned information storing device 500 can be configured to when starting to communicate with the 4th radio communication equipment to above-mentioned 3rd radio communication equipment request further, determine radio wave transmissions/receiving area that above-mentioned interest on deposit memory device 500 can be used for communicating with above-mentioned 4th radio communication equipment, and above-mentioned communication start time determiner 504 can be configured to when starting to communicate with the 4th radio communication equipment to above-mentioned 3rd radio communication equipment request further, if determined radio wave transmissions/receiving area can be used for carrying out radio communication with in above-mentioned 5th radio communication equipment and above-mentioned 6th radio communication equipment, so above-mentioned communication start time is specified to be equal to or greater than the residue call duration time between above-mentioned 5th radio communication equipment and above-mentioned 6th radio communication equipment.
In various embodiments, above-mentioned the opposing party's radio wave transmissions/receiving area determiner 506 can be configured to determine to be used for above-mentioned 5th radio communication equipment and above-mentioned 6th radio communication equipment that one of them carries out the radio wave transmissions/receiving area of radio communication.In various embodiments, above-mentioned connection start restriction arrange device 508 can be configured to determined radio wave transmissions/receiving area arrange connection start restriction.
In various embodiments, above-mentioned connection starts to limit and arranges device 508 and can be configured to receive about the information of the call duration time between above-mentioned 5th radio communication equipment and above-mentioned 6th radio communication equipment, and is configured to above-mentioned connection time started restriction to be set at least continue the call duration time between above-mentioned 5th radio communication equipment and above-mentioned 6th radio communication equipment.
Fig. 6 shows the flow chart 600 represented according to the radio wave transmissions/receiving area defining method of embodiment.In step 602, the first radio communication equipment being configured to perform oriented radio communication in multiple radio wave transmissions/receiving area can sequentially omni-direction transmissions first signal, secondary signal and the 3rd signal, above-mentioned first signal is omni-direction transmissions, above-mentioned secondary signal is transmitted in the first radio wave transmissions/receiving area, and above-mentioned 3rd signal transmits in the second radio wave transmissions/receiving area.In step 604, second radio communication equipment can receive above-mentioned first signal in first time of reception from above-mentioned first radio communication equipment, second time of reception from above-mentioned first radio communication equipment receive above-mentioned secondary signal and above-mentioned 3rd signal one of them.In step 606, above-mentioned second radio communication equipment according to the difference between above-mentioned first time of reception and above-mentioned second time of reception, can determine radio wave transmissions/receiving area that above-mentioned first radio communication equipment can be used for communicating with above-mentioned second radio communication equipment.
Fig. 7 shows the flow chart 700 represented according to the radio wave transmissions/receiving area defining method of embodiment.In a step 702, the second radio communication equipment can omni-directionally signal transmission.In step 704, whether whether the first radio communication equipment being configured to perform oriented radio communication in multiple radio wave transmissions/receiving area can sequentially judge, can be received in the first radio wave transmissions/receiving area in first time of reception and can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of above-mentioned second radio communication equipment omni-direction transmissions by the first signal of above-mentioned second radio communication equipment omni-direction transmissions.In step 706, above-mentioned first radio communication equipment can according to the above-mentioned judgement 704 that whether by the first signal of above-mentioned second radio communication equipment omni-direction transmissions can be received in the first radio wave transmissions/receiving area in first time of reception and whether can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of above-mentioned second radio communication equipment omni-direction transmissions, determine above-mentioned first radio communication equipment can be used for communicating with above-mentioned second radio communication equipment and radio wave transmissions/receiving area.
Fig. 8 illustrates the radio wave transmissions/receiving area certainty annuity 800 according to embodiment.Above-mentioned radio wave transmissions/receiving area certainty annuity 800 can comprise the first radio communication equipment 802 and the second radio communication equipment 804.Above-mentioned first radio communication equipment 802 and above-mentioned second radio communication equipment 804 can perform radio communication by radio link 806.
In various embodiments, above-mentioned first radio communication equipment 802 can be configured to perform oriented radio communication in multiple radio wave transmissions/receiving area and be configured to sequentially transmit the first signal, secondary signal and the 3rd signal, above-mentioned first signal is omni-direction transmissions, above-mentioned secondary signal is transmitted in the first radio wave transmissions/receiving area, and above-mentioned 3rd signal transmits in the second radio wave transmissions/receiving area.Above-mentioned second radio communication equipment 804 can be configured to receive above-mentioned first signal in first time of reception from above-mentioned first radio communication equipment 802 and one that to receive from above-mentioned first radio communication equipment 802 in second time of reception above-mentioned secondary signal and above-mentioned 3rd signal.Further, above-mentioned second radio communication equipment 804 can be configured to determine to state according to the difference between above-mentioned first time of reception and above-mentioned second time of reception radio wave transmissions/receiving area that the first radio communication equipment 802 can be used for communicating with above-mentioned second radio communication equipment 804 further.
In various embodiments, above-mentioned second radio communication equipment 804 can be configured to omni-directionally signal transmission, above-mentioned first radio communication equipment 802 can be configured in multiple radio wave transmissions/receiving area, perform oriented radio communication and be configured to sequentially judge, whether by the first signal of above-mentioned second radio communication equipment 804 omni-direction transmissions can be received in the first radio wave transmissions/receiving area in first time of reception and whether can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of above-mentioned second radio communication equipment 804 omni-direction transmissions, and above-mentioned first radio communication equipment 802 can be configured to further, according to the above-mentioned judgement that whether by the first signal of above-mentioned second radio communication equipment 804 omni-direction transmissions can be received in the first radio wave transmissions/receiving area in first time of reception and whether can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of above-mentioned second radio communication equipment 804 omni-direction transmissions, determine radio wave transmissions/receiving area that above-mentioned first radio communication equipment 802 can be used for communicating with above-mentioned second radio communication equipment 804.
According to each embodiment, can be provided for based on the media interviews of competition and the spatial reuse strategy based on reserved media interviews to using the equipment of oriented antenna.
According to each embodiment, can be provided in the spatial reuse strategy for oriented antenna applications in wireless ad-hoc network.One of application of the strategy proposed can be operated in the system in 55GHz to 70GHz scope.Within the scope of said frequencies, the decay of the channel that fading channel works under can being greater than lower frequency.The reason of the gain that the use of oriented antenna can provide due to above-mentioned oriented antenna and cause the system transfers expanded range at 55GHz to 70GHz operated within range.And, due to can spatial reuse, use above-mentioned oriented antenna that network throughput can be caused to increase.Several transmission can being carried out due to spatial reuse simultaneously, making the media access delays by using oriented antenna can also reduce packet.Because the use of oriented antenna is causing single footpath or sighting distance (line of sight) communication, some problem and a difficult problem of making the use of oriented antenna to alleviate to be brought by multipath transmisstion and intersymbol interference in a way.For the system that can be operated in 55GHz to 70GHz frequency range and for the system under being operated in other frequency any or in other frequency range any, the spatial reuse strategy adapting to oriented transmission and reception can be provided in various embodiments.The spatial reuse strategy of each embodiment above-mentioned can also be applied to the general communication system may be benefited from spatial reuse.
According to the oriented transmission of spatial reuse strategy use of each embodiment and receiving not only meet based on competition media interviews but also meet based on reserved media interviews.In order to the above-mentioned spatial reuse strategy according to each embodiment is described, channel priority in view of WiMedia standard is drawn access (Prioritized Channel Access, i.e. PCA) and distributed reservation protocol (DRP) and explain said method in view of IEEE 802.11 standard and IEEE 802.15.3b standard.But, the above-mentioned spatial reuse strategy according to each embodiment can be applied to any general access strategy based on competition or any generally based on reserved media interviews strategy.In addition, because avoid negotiated channel to reserve the required time, the media interviews based on competition may can bring the shortening of delay sometimes when packet access medium; And some service quality standard system (metrics) of voice and video communication service can be ensured based on reserved media interviews.
As described below, spatial reuse strategy can be provided for oriented transmission and reception in various embodiments.In various embodiments, its transmission range (the omnidirectional's achievable region such as transmitted) can be divided into S by each node (or equipment) " n " nindividual logical radio ripple transmission/reception region, such as sector.To understand below, sector can be called general wireless wave transmission/reception region.Each node (or equipment) " n " can also use fixed integer (1,2,3 ..., S n) to its logical sector number, such as clockwise direction serial number or counterclockwise serial number.In various embodiments, whether pipe node does not have fan antenna or phased array antenna, can keep this logical radio ripple transmission/reception region at each Nodes, such as sector (such as fixing relative to the point in equipment sector).
The spatial reuse strategy of the network based on WiMedia/ECMA MAC (media interviews control) can be provided in each embodiment provided below.
In various embodiments, on all directions that can be able to send at beacon periods (beacon period) inherent radio communication equipment, (such as omnidirectional) sends beacon.The said equipment can perform frequently device discovery procedure (such as each superframe at least one times, every two superframes at least one times or the superframe of every any fixed qty at least one times), with the information keeping them oneself to learn up-to-date they neighborhood direction (such as relative angle) separately, and not necessarily positional information is (such as in various embodiments, the position of equipment in this neighborhood may be uncertain, such as, except angle, can not determine distance).Next first will be described each embodiment, for simplicity simultaneously in order to Conceptions is described, suppose Sn=S=4.
In various embodiments, above-mentioned first radio communication equipment can only use the radio wave transmissions/receiving area determining to affect ongoing communication to send request transmission (RTS) signal.In various embodiments, RTS frame can be replaced by any initial frame.
To understand, the method and apparatus according to each embodiment described herein can be applied to S ngeneral value and arbitrary value.
In various embodiments, each node such as can send topology information element (Topology Information Element) by each superframe, will be described in detail below to it.
In various embodiments, each node can also keep following buffer memory: topological matrix (will be described below) and the individual directed networks allocation vector (DNAV) of S (such as 4), after be described to their details.
According to each embodiment, provide the new information element being called topology information element or topological IE.
To understand, contrast above Fig. 1,2,3,4 and 5 equipment according to each embodiment described or the character of method can be applied to similarly and contrast Fig. 6,7 and 8 embodiments described above.
Fig. 9 illustrates the form of the topology information element 900 transmitted by equipment according to embodiment.
In the form of above topology information element 900, the first device address field 920, second device address field of use 2 eight bit bytes (octet) can be provided ..., until use the N device address field 924 of 2 eight bit bytes.Device address between above-mentioned first device address and above-mentioned N device address can be represented by round dot 922.The said equipment address field can be the device address of the adjacent equipment of the said equipment.Topology information bitmap field (Topology Information Bitmap field) 918 can comprise or be made up of K the eight bit byte (as represented by field 906) of 4 bit elements, with presentation logic sector service condition, above-mentioned logic sector can be the logic sector for communicating with the said equipment of adjacent equipment use, the wherein K=upper limit (N/2), wherein N can be the sum of the adjacent equipment of the said equipment.Each element " n " can correspond to adjacent equipment " n " and can represent in above-mentioned adjacent equipment " n " logic sector being used for communicating with the said equipment.Each device address 920,924 can have the length of 2 eight bit bytes, and they are respectively by such as territory 908 and 912 expression.Least significant bit in each element can corresponding to the logic sector being numbered 4, and the highest significant position in each element can corresponding to the logic sector being numbered 1.Each in above-mentioned four bits of element " n " can be 0 or 1, to represent whether above-mentioned corresponding adjacent equipment " n " uses (such as bit=1) still not use (such as bit=0) corresponding logic sector to communicate with the said equipment respectively.Element 1 can be 4 least significant bits of above topology information bitmap field.If there is non-element, so non-element can be set to 0.Element ID 914 can be provided, such as the type of above-mentioned information element is designated topology information element uniquely.Above-mentioned element ID 914 can have the length of 1 eight bit byte, as field 902 represents.Information total length in above-mentioned information element can represent in length field 916.Above-mentioned length field can have the length of 1 eight bit byte, as shown in field 904.Such as, the length with the information element of N number of device address can have the length (such as above topology information bit Figure 91 8 uses K eight bit byte, and each device address uses 2 eight bit bytes) of K+2N eight bit byte.
In various embodiments, each equipment can comprise above topology IE at the beacon of its each superframe.Communicate with the said equipment in adjacent equipment and the sector of the above-mentioned adjacent equipment used can be obtained by the said equipment usually in device discovery procedure, will be described below.The said equipment after device discovery procedure collection information, can afterwards by this information coding in above topology IE.The above-mentioned information be included in above topology IE can be applied to the above-mentioned superframe that can transport above-mentioned IE.If receive beacon from equipment in previous superframe after, continue fixed qty (such as mTopologyConstancy, such as 3) superframe does not receive beacon from this equipment always, so can use from the topological IE the upper beacon that this equipment receives, seeming a beacon is (about the topological IE) that receive in the current superframe.
In various embodiments, the topology information bitmap of another (in other words: optional) form can be provided, will be described below.
In various embodiments, topology information bitmap field 918 can comprise or be made up of N number of eight bit byte of 8 bit elements, with presentation logic sector service condition, above-mentioned logic sector can be the logic sector being used in adjacent equipment communicating with the said equipment, and wherein N can be the sum of the adjacent equipment of the said equipment.Each element " n " of numbering from 1 to N can correspond to adjacent equipment " n " and can represent the logic sector that adjacent equipment " n " is used for communicating with the said equipment.6 least significant bits of element " n " can represent in above-mentioned adjacent equipment " n " and are used for the numbering of the logic sector communicated with the said equipment, and this numbering can be that 0 (or 1) is to any one in 63 (or 64).Whether the logic sector that the highest significant position of element " n " can represent large 1 (mould 64) of that numerical value represented than 6 least significant bits of above-mentioned element " n " also can communicating with the said equipment used by above-mentioned adjacent equipment " n " (if above-mentioned highest significant position is set to 1).Whether the logic sector that the secondary highest significant position of element " n " can represent that numerical value represented than 6 least significant bits by above-mentioned element " n " little by 1 (mould 64 ,-1 is equivalent to 63) also can communicating with the said equipment used by above-mentioned adjacent equipment " n " (if above-mentioned highest significant position is set to 1).Nearly 3 sectors it should be noted that adjacent equipment " n " so can be used to communicate with the said equipment.
In various embodiments, highest significant position and time highest significant position of element " n " together (as 2 bits) how many sectors of the above-mentioned adjacent equipment " n " on the both sides of that logic sector represented at above-mentioned 6 least significant bits by respective element can be represented by above-mentioned adjacent equipment " n " for communicating with the said equipment.So above-mentioned adjacent equipment " n " can use nearly 7 logic sector (on the either side of the logic sector represented by above-mentioned 6 least significant bits each 3) coming to communicate with the said equipment.In various embodiments, above-mentioned 2 highest significant positions of element " n " can inform that how many sectors of the above-mentioned adjacent equipment in the default side " n " of the logic sector represented at 6 (or other predetermined number any) least significant bits by corresponding element are used for communicating with the said equipment by above-mentioned adjacent equipment " n ".
In various embodiments, one or more node (such as each node) can keep buffer memory, will be described below.
In various embodiments, one or more equipment (such as each equipment) of PCA or DRP transmission frame or received frame are used can to keep topological matrix (TM).Above-mentioned TM can have 10 row below shown in table 1.Often row can correspond to the particular link of (between two equipment) in above-mentioned network.Often row can comprise the link information about following content: the optimal logic sector of the device address 1 of first device address (such as source) of respective link or in other words link, second device address (such as converging) of respective link or the in other words device address 2 of link, the optimal logic sector of above-mentioned link first device address and above-mentioned link second device address.Each in four row of the gauge outfit " logic sector of device address 1 " of above-mentioned TM can correspond to 1 bit and correspond to a logic sector, and if device address 1 uses corresponding logic sector to communicate with device address 2, so can 1 be set to.Each in four row of the gauge outfit " logic sector of device address 2 " of above-mentioned TM can correspond to 1 bit and can correspond to a logic sector, and if device address 2 uses corresponding logic sector to communicate with device address 1, so can 1 be set to.Above-mentioned TM can be upgraded once for each superframe according to device discovery result and the topological IE that receives by the said equipment or for every L 0individual superframe upgrades once (wherein L 0can be greater than 1 natural number).From miscellaneous equipment, upgrading the information about other link (wherein, the said equipment may not be summit (vertex)) that above-mentioned TM may need can by using the beacon reception of above-mentioned topological IE.
The row of table 1 topological matrix (TM)
One or more equipment (such as each equipment) can keep its oneself with the TM of its adjacent equipment, wherein relate to the said equipment or which sector its adjacent equipment can use come and another devices communicating as source.
Figure 10 illustrates the network 1000 according to the equipment of embodiment.In the network 1000 of equipment using oriented antenna, for explanation below, can suppose that all devices can in transmission range each other.For simplicity, also the radio communication equipment shown in Figure 10 can be called node or equipment.First radio communication equipment 1002 can in its first sector 1002 1, the second sector 1002 2, the 3rd sector 1002 3with the 4th sector 1002 4interior communication.Second radio communication equipment 1004 can in its first sector 1004 1, the second sector 1004 2, the 3rd sector 1004 3with the 4th sector 1004 4interior communication.3rd radio communication equipment 1006 can in its first sector 1006 1, the second sector 1006 2, the 3rd sector 1006 3with the 4th sector 1006 4interior communication.4th radio communication equipment 1008 can in its first sector 1008 1, the second sector 1008 2, the 3rd sector 1008 3with the 4th sector 1008 4interior communication.5th radio communication equipment 1010 can in its first sector 1010 1, the second sector 1010 2, the 3rd sector 1010 3with the 4th sector 1010 4interior communication.6th radio communication equipment 1012 can in its first sector 1012 1, the second sector 1012 2, the 3rd sector 1012 3with the 4th sector 1012 4interior communication.7th radio communication equipment 1014 can in its first sector 1014 1, the second sector 1014 2, the 3rd sector 1014 3with the 4th sector 1014 4interior communication.
Table 2 illustrates the example of the TM kept by the first equipment 1002.
Table 2 is about the example of the TM of equipment in Figure 10 1002
As what can find out from the first row of the table 2 such as kept by above-mentioned first equipment 1002, above-mentioned first equipment 1002 can use its first logic sector 1002 1communicate with above-mentioned second equipment 1004, and above-mentioned second equipment 1004 can use its 3rd logic sector 1004 3communicate with above-mentioned first equipment 1002.Above-mentioned first equipment 1002 can obtain this information by the device discovery procedure of oneself and by the topological IE sent by above-mentioned second equipment 1004.Such as can also find out from the table 2 kept by above-mentioned first equipment 1002, above-mentioned 7th equipment 1014 can use two logic sectors (its first sector 1014 1with its 4th sector 1014 4) communicate with above-mentioned 5th equipment 1010, and above-mentioned 5th equipment 1010 can use two (its second sectors 1010 in its logic sector successively 2with its 3rd sector 1010 3) communicate with above-mentioned 7th equipment 1014.Above-mentioned information can be collected by the topological IE received from above-mentioned 7th equipment 1014 and above-mentioned 5th equipment 1010 by above-mentioned first equipment 1002.Can suppose that above-mentioned 7th equipment 1014 and above-mentioned 5th equipment 1010 have device discovery result.
In various embodiments, the equipment of transmission frame or received frame can keep 4 directed networks allocation vector (DNAV), thus provides a directed networks allocation vector for each logic sector of the said equipment.Above-mentioned directed networks allocation vector can comprise the remaining time such as making above-mentioned logic sector be not used in transmission or receive due to the transmission of adjacent equipment or the reason of reception.When equipment receive be not send to this equipment and be not to broadcast address send frame head, if above-mentioned newly for being greater than the current dna V value for above-mentioned sector about the DNAV value of sector, so the said equipment can use received duration (duration) field to upgrade the DNAV (will be described) of logic sector relevant in the said equipment below.If equipment reception notification has set up reserved beacon, so the said equipment can first medium access time slot in adjacent media access time slot (MAS) noticed by received DRP IE time, upgrade the relative dna V (will be described) of the said equipment below with the duration that may cover the reserved adjacent MAS of all residues noticed by above-mentioned received DRP IE.The more details upgraded about DNAV will be provided below.
In various embodiments, equipment can disappear in time and reduce its each DNAV, until its DNAV reaches zero.Above-mentioned DNAV at least can remain to parameter mClockResolution.
In various embodiments, the method for spacial multiplex based on DRP and equipment can be provided, will be described below.
In various embodiments, consult if equipment wants to start DRP, so first the said equipment can be collected by the DRP IE received in the beacon of all adjacent equipment of the said equipment about the reserved information of all current DRP.The said equipment can also search its TM, wishes to use which logic sector to communicate with the receiving equipment of the said equipment plan to know the said equipment by inference.Which logic sector the receiving equipment that the said equipment can also know the said equipment plan by inference from its TM can use to communicate with the said equipment.If the above-mentioned logic sector of knowing by inference from the TM of the said equipment cannot be related to by any one use in the presently used logic sector of equipment of current reservations, so the said equipment can start DRP with its receiving equipment and consults.
Such as, contrast Figure 10, can suppose that above-mentioned first equipment 1002 and above-mentioned 3rd equipment 1006 have reserved one group of MAS.If above-mentioned second equipment 1004 is wanted to start to carry out DRP negotiation with above-mentioned 4th equipment 1008 for above-mentioned same group of MAS, above-mentioned second equipment 1004 first can know above-mentioned first equipment 1002 by inference from its beacon received and above-mentioned 3rd equipment 1006 may have current reservations, and above-mentioned second equipment 1004 can also know the first logic sector 1002 that above-mentioned first equipment 1002 can use above-mentioned first equipment 1002 by inference from its TM 1and above-mentioned 3rd equipment 1006 can use the 4th logic sector 1006 of above-mentioned 3rd equipment 1006 4.Above-mentioned second equipment 1004 can also be known it by inference and can be intended to use its second logic sector 1004 from its TM 2, above-mentioned second logic sector 1004 2it may be above-mentioned first logic sector 1002 of above-mentioned first equipment 1002 1with above-mentioned 4th logic sector 1006 of above-mentioned 3rd equipment 1006 4can not relate to.Above-mentioned second equipment 1004 can also be known by inference from its TM, and above-mentioned 4th equipment 1008 may intend to use the first logic sector 1008 of above-mentioned 4th equipment 1008 1with the second logic sector 1008 2to communicate with above-mentioned second equipment 1004 and these logic sectors may be above-mentioned first logic sectors 1002 of above-mentioned first equipment 1002 1with above-mentioned 4th logic sector 1006 of above-mentioned 3rd equipment 1006 4can not relate to.By said process, above-mentioned second equipment 1004 can start DRP to be consulted, with the MAS that those MAS parts using identical MAS or use with above-mentioned first equipment 1002 and above-mentioned 3rd equipment 1006 are overlapping.Target device its license any reserved before can ensure proposed logic sector can use by oneself, the owner of above-mentioned reservation negotiation should relate to from equipment any one logic sector presently used of use current reservations.Reserve once above-mentioned second equipment 1004 sets up DRP with above-mentioned 4th equipment 1008, media when above-mentioned second equipment 1004 and above-mentioned 4th equipment 1008 just can use above-mentioned first equipment 1002 to communicate with above-mentioned 3rd equipment 1006 simultaneously.Use the negotiation rules of DRP IE can with the ECMA specification of obeying above-mentioned rule in provide those are similar.But, consult any reserved the said equipment and also can depend on their respective TM and DNAV.If equipment is wanted to use logic sector to carry out the relevant transmission of DRP, when the MAS so intending to reserve or use in superframes at the said equipment starts (and during above-mentioned MAS), wish that the DNAV of above-mentioned logic sector is zero.
In various embodiments, when reserved foundation, some or all (these nodes are any one adjacent equipment of both the above-mentioned owner or target device) in node can the just in time DNAV of these nodes of renewal before reserve MAS starts.The owner of current reservations or the adjacent equipment of target device can upgrade the DNAV (time reserved MAS) of the logic sector for the above-mentioned adjacent equipment can related to by above-mentioned owner logic sector used and/or above-mentioned target device logic sector used current reservations.Exemplarily, contrast Figure 10, when above-mentioned 6th equipment 1012 receives the beacon for one group of reserved foundation of MAS notice from above-mentioned first equipment or above-mentioned 3rd equipment, when above-mentioned 6th equipment 1012 can start at above-mentioned one group of MAS in the above-mentioned reserved each superframe taken, (and not being such as before above-mentioned one group of MAS) upgrades the second logic sector 1012 of above-mentioned 6th equipment 1012 2dNAV because the second logic sector 1012 of above-mentioned 6th equipment 1012 2can by above-mentioned first logic sector 1002 of above-mentioned first equipment 1002 1relate to (DRP relevant with above-mentioned 3rd equipment 1006 can be used to reserve).It should be noted that above-mentioned 6th equipment 1012 can for its second logic sector 1012 2its DNAV is arranged to the duration that can cover that group MAS reserved by above-mentioned first equipment 1002 and above-mentioned 3rd equipment 1006.Similar, above-mentioned 7th equipment 1014 can in the above-mentioned reserved each superframe taken between above-mentioned first equipment 1002 and above-mentioned 3rd equipment 1006, when above-mentioned one group of reserved MAS starts, for the first logic sector 1014 of above-mentioned 7th equipment 1014 1upgrade the DNAV of above-mentioned 7th equipment 1014, because the first logic sector 1014 of above-mentioned 7th equipment 1014 1can by the 4th logic sector 1006 of above-mentioned 3rd equipment 1006 4relate to (DRP relevant with above-mentioned first equipment 1002 can be used to reserve).Until the MAS reserved by above-mentioned first equipment 1002 and above-mentioned 3rd equipment 1006, the DNAV of above-mentioned 6th equipment 1012 and above-mentioned 7th equipment 1014 just can upgrade with above-mentioned reserved relevant superframe.After above-mentioned 6th equipment 1012 and above-mentioned 7th equipment 1014 can remember to receive beacon from above-mentioned first equipment 1002 and above-mentioned 3rd equipment 1006 in beacon periods, upgrade the DNAV of above-mentioned 6th equipment 1012 and above-mentioned 7th equipment 1014 at the data transmission period of superframe.If above-mentioned first equipment 1002 and above-mentioned 3rd equipment 1006 reserve several adjacent but mutually disjoint MAS part, the adjacent equipment of so above-mentioned first equipment 1002 and above-mentioned 3rd equipment 1006 can upgrade the relative dna V with above-mentioned first equipment 1002 and above-mentioned 3rd equipment 1006 when each adjacent part starts with the duration covering above-mentioned adjacent part.
In various embodiments, the conflict (such as obeying above-mentioned spatial reuse rule) between two reservation negotiation with same type can solve, such as, to solve the conflict between two " hard reservation " type negotiation according to the one in various method.If can will be related to by the logic sector of another equipment that will use in another is reserved at the logic sector of the reserved middle equipment used, and this another reserved require with above-mentioned that reserved state that organize the partly overlapping MAS of MAS, reserve and may conflict mutually for so above-mentioned two.
In various embodiments, if equipment is not the owner of the adjacent equipment of the said equipment from target device receive DRP IE, so the said equipment can with the duration value of MAS all reserved above covering upgrade the said equipment can by the above-mentioned owner the MAS that reserves time relate to the DNAV of above-mentioned those sectors possessory.If the target device that equipment is not the adjacent equipment of the said equipment from the owner receives DRP IE, so the said equipment can with the duration value of MAS all reserved above can covering upgrade the said equipment can by the corresponding owner the MAS that reserves time relate to the DNAV of those sectors of above-mentioned target device.
In various embodiments, method for spacial multiplex and the equipment of Based PC A can be provided, will be described below.
In various embodiments, equipment can use logic sector to communicate, as long as the corresponding DNAV of above-mentioned logic sector is zero and media in above-mentioned logic sector are in idle condition (if meet these conditions, so media can be with).
In various embodiments, in order to PCA, equipment can think that the media in the logic sector meeting following arbitrary condition are in busy condition:
-when the media that clear channel assessment (CCA) (CCA) mechanism of the said equipment represents in this logic sector are in busy condition (although above-mentioned media may be specific direction can or in other logic sector, be in idle condition);
-when the DNAV of the above-mentioned logic sector of the said equipment is greater than zero;
-when the said equipment use this logic sector to transmit in the media or received frame time;
When-the duration of informing when the frame (this frame is that send to the logic sector of the adjacent equipment of the said equipment can related to by this logic sector of the said equipment or that send from this logic sector of above-mentioned adjacent equipment (using TM to know by inference)) of previous transmissions not yet expires;
-when the media in this logic sector are not useable for PCA (because adjacent equipment reserves the logic sector using and can be related to by this logic sector of the said equipment).
At All Other Times all, equipment can think that the media in logic sector are in idle condition.If the media of each logic sector of the said equipment are in idle condition, so the said equipment can think that media omnidirectional is in idle condition.Even if one of them media of the logic sector of the said equipment are in busy condition, the said equipment also can think that media are in busy condition for omnidirectional transmission.
In various embodiments, equipment can keep backoff counter for each access level (AC), such as such in for the ECMA specification of omni-direction transmissions.Above-mentioned backoff counter can be successively decreased according to being similar to the mode provided in ECMA specification.About call above-mentioned backoff counter and the rule making it successively decrease can with provide in ECMA specification the same.Except above-mentioned backoff counter, in various embodiments, equipment can keep for the independent backoff counter of each AC for each logic sector.The backoff counter for AC for logic sector can be successively decreased, as long as the media AIFS in the past [AC] in respective logic sector (its DNAV is zero) (wherein, AIFS can be Arbitration Inter Frame Space, it can be free time, and AIFS [AC] can represent the AIFS of given AC here) and Preset Time (such as pSlotTime) in be in idle condition.Except media can being limited to the media in above-mentioned logic sector, can be similar to the rule making it successively decrease those rules provided in the ECMA specification for PCA and omni-direction transmissions about the above-mentioned backoff counter called for logic sector.Equipment should perform clear channel assessment (CCA) (CCA) in each in its 4 logic sectors independently.Equipment also should call backoff counter for the media in any logic sector independently.
In various embodiments, when equipment has the buffered data packet for AC of PCA to be used transmission, first the said equipment can check from its TM that it wishes to use which logic sector to send the data of oriented transmission.By using the condition (such as check media idle condition) provided above, so the said equipment can understand fully that it is wished to be used for the media carried out in the logic sector of directional data transmission and whether is in idle condition.If the media in above-mentioned logic sector are in busy condition, so the said equipment can also call backoff counter corresponding to the logic sector that is used for carrying out directional data transmission with its hope.The said equipment is carry out omni-direction transmissions to call another independent backoff counter simultaneously.
In various embodiments, if equipment meets following condition, so can be considered to or can think that oneself obtains the transmission opportunity (TXOP) in logic sector for AC:
-the said equipment has the one or more newly arrived Frame or the new command frame produced that belong to above-mentioned AC;
-the said equipment has having backoff counter corresponding to the logic sector of null value with that and do not belong to the frame of above-mentioned AC before new frame arrives or produces for above-mentioned AC;
-the said equipment judges that the media in that logic sector are idle or available and reaches AIFS [AC] or longer time; And
-the said equipment has backoff counter corresponding to the logic sector of null value not used for other AC with that, or have and with that, there is backoff counter corresponding to the logic sector of null value for some other AC, but such AC have the priority lower than that AC above-mentioned or the said equipment do not belong to those AC, get out the frame that transmits.
In various embodiments, once meet above-mentioned condition (obeying above-mentioned rule and rule below), the said equipment just can start directionally to transmit the frame (it can be RTS frame) belonging to that AC above-mentioned in that logic sector above-mentioned.If the said equipment meets following condition, so also can think and oneself obtain the TXOP for AC in logic sector:
-the said equipment have belong to that AC above-mentioned, cushion one or more frames for transmitting, comprising re-transmission (retry);
The backoff counter corresponding with that logic sector that-the said equipment uses it for that AC above-mentioned is reduced to 0 from 1, and when the media in that logic sector keep idle or upstate from that time always, the said equipment does not have transmission frame in that logic sector;
-the said equipment has backoff counter corresponding to the logic sector of null value not used for other AC with that, or have and with that, there is backoff counter corresponding to the logic sector of null value for some other AC, but such AC have the priority lower than that AC above-mentioned or the said equipment do not belong to these AC, be ready to transmit frame.
In various embodiments, unless the said equipment obey above-mentioned rule or below rule logic sector in a logic sector in obtain TXOP, otherwise its can not initiate in any one logic sector transmit.By using the step that provides in ECMA specification but utilizing the backoff counter for omni-direction transmissions for AC, the said equipment can think that oneself has obtained the TXOP for omni-direction transmissions.
In various embodiments, before can sending any RTS packet, the said equipment can judge whether it has wished to send in the logic sector of oriented data at it and obtain TXOP.If the said equipment has obtained the TXOP for omni-direction transmissions, the said equipment omni-directionally can send above-mentioned RTS packet (if sending RTS).In various embodiments, about the transmission of RTS, only have when the said equipment not can be used for the media of omni-direction transmissions, if the said equipment determines to send RTS, so the said equipment just can send oriented RTS.If at it, the said equipment only wishes that in the logic sector of the oriented data of transmission, (media in other sector are in busy condition) obtains TXOP, so the said equipment can wish directionally send above-mentioned RTS packet in the logic sector of the oriented data of transmission at it.The upper bound of the duration field in the RTS packet that above-mentioned omnidirectional sends can be default value, such as mTXOPLimit.The upper bound of the duration field in the RTS packet of above-mentioned oriented transmission can be the value that minimum value in the non-zero DNAV of the said equipment logic sector deducts RTS preamble transmission time gained.Consider from the TM of equipment, the information of DRP IE and DNAV that receives, if the affected adjacent equipment of the duration estimated (by what comprise at above-mentioned RTS packet) infringement possibility is imminent reserved, so equipment can not send RTS packet.
In various embodiments, about the oriented RTS frame of transmission or oriented CTS frame, when the said equipment wishes to send or receive transmission frame in the logic sector of data at it, the said equipment can have null value at DNAV and media the free time more than simultaneously transmission frame in each logic sector of AIFS/AIFS [AC].This can by using fan antenna or being realized by the beam forming utilizing phased array antenna to carry out.
In various embodiments, if the DNAV of any one is zero and above-mentioned DNAV does not reach AIFS/AIFS [AC] at media free time in other logic sector of zero in other logic sector, equipment can not transmit oriented RTS frame (or initial frame when TXOP starts) in a sector.
When equipment receives RTS packet (device address of the said equipment is mated in the device address in RTS packet), first the said equipment can check from its TM that it can use its which logic sector to receive the data of the oriented transmission of the transmitting apparatus from above-mentioned RTS.By using above-mentioned condition (be used for check media idle condition), the said equipment can also understand fully whether the media in its logic sector of wishing for receiving are in idle condition.If media are in idle condition and available in all logic sectors of the said equipment, so the said equipment omni-directionally can send the CTS packet with the duration field such as provided in ECMA specification.If media are not all be in idle condition but only wish to receive at the said equipment in the logic sector of oriented data to be in idle condition and available in all logic sectors, so the said equipment can be wished to receive in the logic sector of oriented data at it and directionally be sent CTS packet.In the above-mentioned CTS packet that the said equipment directionally sends, the upper bound of the duration field of above-mentioned CTS packet can be the minimum value in fol-lowing values:
Minimum value in the non-zero DNAV of-the said equipment logic sector deducts the value of CTS preamble transmission time gained; With
The duration field (for omnidirectional CTS) that the step provided in-use ECMA specification is known by inference from the RTS packet that the said equipment receives.
In various embodiments, if above-mentioned duration field (for the omnidirectional CTS) minimum value exceeded in the non-zero DNAV of the said equipment logic sector using the step provided in ECMA specification to know by inference from the RTS packet that the said equipment receives deducts the value of CTS preamble transmission time gained, so the said equipment may not need in response to received RTS packet and send CTS packet.And, consider from equipment TM, the information of DRP IE and DNAV that receives, if above-mentioned duration (deriving from above) infringement may affected adjacent equipment upcoming reserved, so can not send CTS packet.If CTS packet is oriented transmission, so above-mentioned duration may wish that the minimum non-zero DNAV of the logic sector being less than or equal to the said equipment deducts the value of CTS preamble transmission time gained.
In various embodiments, if equipment has the sector (being numbered S) of non-zero DNAV, so the said equipment with above-mentioned sector S diametrically and CTS frame (in order to receive data in the sector relative with sector S geometry) can not be sent in geometrically relative sector.In various embodiments, no matter when oriented transmission RTS, can send above-mentioned RTS (such as being controlled by power) with the power reduced.Similarly, if oriented transmission CTS frame, so (such as being controlled by power) can be sent by the transmitting power reduced.In various embodiments, the control frame of all oriented transmission can control to transmit by power, to compensate oriented transmitter antenna gain (dBi).
Exemplarily, contrast Figure 10, if above-mentioned first equipment 1002 sends omnidirectional RTS to above-mentioned 3rd equipment 1006, so when receiving above-mentioned RTS, it is above-mentioned 3rd equipment 1006 that all adjacent equipment of above-mentioned first equipment 1002 can know desired object equipment by inference from received RTS frame head.Knowing above-mentioned first equipment 1002 by inference and may wish to use the first logic sector 1002 of above-mentioned first equipment 1002 1carry out the 4th logic sector 1006 with above-mentioned 3rd equipment 1006 4after communication, each adjacent equipment of above-mentioned first equipment 1002 can also arrange the DNAV of above-mentioned each adjacent equipment after the TM searching above-mentioned each adjacent equipment.When the first sector 1014 of above-mentioned 7th equipment 1014 1can from the 4th sector 1006 of above-mentioned 3rd equipment 1006 4when relating to, above-mentioned 7th equipment 1014 may wish to arrange its first sector 1014 1dNAV.Above-mentioned 6th equipment 1012 can use from the duration field in received RTS packet, arranges and is used for its second logic sector 1012 2dNAV, above-mentioned 4th equipment 1008 can arrange its 3rd logic sector 1008 3dNAV, and above-mentioned second equipment 1004 can arrange its 3rd logic sector 1004 3dNAV.When receiving above-mentioned RTS packet from above-mentioned first equipment 1002, above-mentioned 3rd equipment 1006 can be known it by inference and can be intended to use its 4th logic sector 1006 from its TM 4packet is received, and if for the 4th sector 1006 of above-mentioned 3rd equipment 1006 from above-mentioned first equipment 1002 4dNAV and other DNAV all of the 3rd equipment 1006 be zero simultaneously, so above-mentioned 3rd equipment 1006 can give a response with the CTS packet of the duration had by using the rule provided in ECMA specification to determine.Above-mentioned 3rd equipment 1006 can also send the CTS of omnidirectional, because the DNAV of all sectors of above-mentioned 3rd equipment 1006 has been zero (just before transmission CTS).When receiving CTS from above-mentioned 3rd equipment 1006, each equipment in above-mentioned 7th equipment 1014, above-mentioned 6th equipment 1012, above-mentioned 4th equipment 1008 and above-mentioned second equipment 1004 may intend to upgrade its DNAV by using the TM of oneself.It should be noted that the 4th sector 1006 of above-mentioned 3rd equipment 1006 4cannot may relate to from other nodes all (except above-mentioned 7th equipment 1014 and above-mentioned first equipment 1002, they can be the receiving equipments of the CTS from above-mentioned 3rd equipment 1006).If above-mentioned second equipment 1004 is wanted to send RTS packet when above-mentioned first equipment 1002 communicates with above-mentioned 3rd equipment 1006 to above-mentioned 4th equipment 1008 now, so above-mentioned 4th equipment 1008 can know its 3rd sector 1008 by inference 3dNAV be nonzero value.Therefore, if above-mentioned second equipment 1004 is selected to send RTS, if the second sector 1004 of so above-mentioned second equipment 1004 2available, then above-mentioned second equipment 1004 can use its second sector 1004 2(and using other available sectors all) is to above-mentioned 4th equipment 1008 oriented transmission RTS.Because above-mentioned 4th equipment 1008 can have for its 3rd sector 1008 3non-zero DNAV (reason due to the first equipment 1002-the 3rd equipment 1006 link), if so the first sector 1008 of above-mentioned 4th equipment 1008 1with the second sector 1008 2available, so above-mentioned 4th equipment 1008 can use its first sector 1008 1with the second sector 1008 2(and using other available sector all) comes to above-mentioned second equipment 1004 oriented transmission CTS packet, and the duration field of above-mentioned CTS packet is arranged to the 3rd sector 1008 being less than or equal to above-mentioned 4th equipment 1008 3dNAV (if it is minimum non-zero DNAV) deduct the value of CTS preamble transmission time gained.
In various embodiments, if equipment receives predetermined RTS frame or the CTS frame (receiving equipment of RTS or CTS is another equipment) of issuing another equipment (not being the adjacent equipment of the said equipment), so the said equipment can upgrade the DNAV of the sector of the said equipment of the transmitting apparatus can relating to above-mentioned RTS or CTS frame, and consider the duration value comprised at received RTS frame or CTS frame, the DNAV of other sector of the said equipment within the scope of the transmission achievable region half of the transmitting apparatus towards above-mentioned RTS frame or CTS frame of the said equipment can be upgraded.
In various embodiments, the optional payload of RTS frame or CTS frame can be provided, will be described below.
Hereinbefore, can suppose that above-mentioned RTS frame and CTS frame have those the similar forms with ECMA regulation and stipulation.In various embodiments, the optional replacement form of RTS frame and CTS frame can be provided.In various embodiments, the payload of 1 eight bit byte can be added to each in above-mentioned RTS frame and CTS frame.According to the topological IE received in beacon and device discovery result, the TM of each equipment can be upgraded.Payload such above if RTS frame and CTS frame have, the frame that can receive from its adjacent equipment according to it for the said equipment (except beacon frame) is frequently upgrading raising flexibility for its TM in superframe.
In various embodiments, the payload of RTS frame can be provided for, hereafter will be described.
In various embodiments, the payload of above-mentioned RTS frame can be two 4 bit elements.First element can take 4 least significant bits of above-mentioned eight bit byte.Above-mentioned first element can provide above-mentioned RTS frame transmitting apparatus to intend to carry out with receiving equipment (the object equipment of RTS) information of the sector service condition of oriented data communication.Second element can provide the information of the sector service condition of the above-mentioned receiving equipment (the object equipment of RTS) of knowing by inference from the TM for oriented data receiver.Least significant bit in above-mentioned first element can represent the service condition of the 4th sector of transmitting apparatus (transmitting apparatus of RTS).Least significant bit in above-mentioned second element can represent the service condition of the 4th sector of receiving equipment (receiving equipment of RTS).If the bit in element is 1, so may intends to use corresponding sector, otherwise not use corresponding sector.The transmitting apparatus of above-mentioned RTS frame can obtain from from the topological IE of adjacent equipment and this transmitting apparatus TM the information that will be included in above-mentioned eight bit byte.
In various embodiments, the payload of CTS frame can be provided for, hereafter will be described.
In various embodiments, the payload of above-mentioned CTS frame can be two 4 bit elements.First element can take 4 least significant bits of above-mentioned eight bit byte.Above-mentioned first element can provide the transmitting apparatus of above-mentioned CTS frame to intend to carry out with the transmitting apparatus (or object equipment of CTS) of above-mentioned RTS the information of the sector service condition of oriented data communication.The information of the sector service condition that the second element can provide RTS transmitting apparatus to communicate with above-mentioned CTS transmitting apparatus.Least significant bit in above-mentioned first element can represent the service condition of the 4th sector of transmitting apparatus (transmitting apparatus of CTS).Least significant bit in above-mentioned second element can represent the service condition of the 4th sector of receiving equipment (receiving equipment of CTS).If the bit in element is 1, so may intends to use corresponding sector, otherwise not use corresponding sector.The transmitting apparatus of above-mentioned CTS frame can obtain from from the topological IE of adjacent equipment and transmitting apparatus TM the information that will be included in above-mentioned eight bit byte.Contrast Figure 10, exemplarily, above-mentioned first equipment 1002 can have the payload below shown in Figure 11 to the RTS packet that above-mentioned 3rd equipment 1006 sends.Above-mentioned 3rd equipment 1006 can have the payload shown in Figure 12 to the example of the CTS packet that above-mentioned first equipment 1002 sends.
Figure 11 illustrates the payload 1100 of the request transmission frame according to embodiment.In the example of the payload 1100 of above-mentioned RTS frame, first element can take four least significant bits, such as the 0th b0 (1116), the 1st b1 (1114), the 2nd b2 (1112) and the 3rd b3 (1110), 0th b0 can represent the 4th sector of the transmitting apparatus of above-mentioned RTS frame, 1st b1 can represent the 3rd sector of the transmitting apparatus of above-mentioned RTS frame, 2nd b2 can represent the second sector of the transmitting apparatus of above-mentioned RTS frame, and the 3rd b3 can represent the first sector of the transmitting apparatus of above-mentioned RTS frame.Second element can take four highest significant positions, such as the 4th b4 (1108), the 5th b5 (1106), the 6th b6 (1104) and the 7th b7 (1102), 4th b4 can represent the 4th sector of the receiving equipment of above-mentioned RTS frame, 5th b5 can represent the 3rd sector of the receiving equipment of above-mentioned RTS frame, 6th b6 can represent the second sector of the receiving equipment of above-mentioned RTS frame, and the 7th b7 can represent the first sector of the receiving equipment of above-mentioned RTS frame.The value of the 0th 1116 is represented by Reference numeral 1132.The value of the 1st 1114 is represented by Reference numeral 1130.The value of the 2nd 1112 is represented by Reference numeral 1128.The value of the 3rd 1110 is represented by Reference numeral 1126.The value of the 4th 1108 is represented by Reference numeral 1124.The value of the 5th 1106 is represented by Reference numeral 1122.The value of the 6th 1104 is represented by Reference numeral 1120.The value of the 7th 1102 is represented by Reference numeral 1118.Above-mentioned first equipment 1002 can use its first sector 1002 1send above-mentioned RTS frame, thus above-mentioned 3rd b3 (1110) can be 1, and other position (1112,1114,1116) in above-mentioned first element can be set to 0.And above-mentioned 3rd equipment 1006 can use its 4th sector 1006 4receive above-mentioned RTS frame, thus above-mentioned 4th b4 (1108) can be set to 1, and other position (1102,1104,1106) in above-mentioned second element can be set to 0.
Figure 12 illustrates the payload 1200 of the clear to send frame according to embodiment.In the example of the payload 1200 of above-mentioned CTS frame, above-mentioned first element can take four least significant bits, such as the 0th b0 (1216), the 1st b1 (1214), the 2nd b2 (1212) and the 3rd b3 (1210), 0th b0 can represent the 4th sector of the transmitting apparatus of above-mentioned CTS frame, 1st b1 can represent the 3rd sector of the transmitting apparatus of above-mentioned CTS frame, 2nd b2 can represent the second sector of the transmitting apparatus of above-mentioned CTS frame, and the 3rd b3 can represent the first sector of the transmitting apparatus of above-mentioned CTS frame.Second element can take four highest significant positions, such as the 4th b4 (1208), the 5th b5 (1206), the 6th b6 (1204) and the 7th b7 (1202), 4th b4 can represent the 4th sector of the receiving equipment of above-mentioned CTS frame, 5th b5 can represent the 3rd sector of the receiving equipment of above-mentioned CTS frame, 6th b6 can represent the second sector of the receiving equipment of above-mentioned CTS frame, and the 7th b7 can represent the first sector of the receiving equipment of above-mentioned CTS frame.The value of the 0th 1216 is represented by Reference numeral 1232.The value of the 1st 1214 is represented by Reference numeral 1230.The value of the 2nd 1212 is represented by Reference numeral 1228.The value of the 3rd 1210 is represented by Reference numeral 1226.The value of the 4th 1208 is represented by Reference numeral 1224.The value of the 5th 1206 is represented by Reference numeral 1222.The value of the 6th 1204 is represented by Reference numeral 1220.The value of the 7th 1202 is represented by Reference numeral 1218.Above-mentioned 3rd equipment 1006 can use its 4th sector 10064 to send above-mentioned CTS frame, and thus the 0th b0 (1216) can be 1, and other position (1210,1212,1214) in above-mentioned first element can be set to 0.And above-mentioned first equipment 1002 can use its first sector 1002 1receive above-mentioned RTS frame, thus the 7th b7 (1202) can be set to 1, and other position (1204,1206,1208) in above-mentioned second element can be set to 0.
In various embodiments, if above-mentioned form is used for the payload of RTS and CTS, so any node can use the payload of received RTS frame and CTS frame to upgrade its DNAV (and/or TM).Method can offer an opportunity (situation comprising beacon stealing etc.) for equipment at their TM of super frame inner updating above.In various embodiments, the payload for RTS frame and CTS frame proposed can also be included in the frame head of RTS frame and CTS frame.Similar eight bit byte (being similar to the form provided above) can also be used in the frame head of Frame, aggregate data frame (aggregated data frame), control frame and command frame, TM and DNAV so that node can be had an opportunity at super frame inner updating node during contact communication between adjacent equipment.When option above, first 4 bit elements of the eight bit byte in frame head to be included in (such as the frame head of Frame, aggregate data frame, control frame or command frame) can carry the information about transmitting apparatus logic sector service condition, and second 4 bit elements of above-mentioned eight bit byte can carry the information about receiving equipment logic sector service condition.
In various embodiments, the payload of RTS frame or CTE frame or frame head can carry following message in two eight bit bytes.First eight bit byte can carry the information about transmitting apparatus logic sector service condition, and the second eight bit byte can carry the information about receiving equipment logic sector service condition.In above-mentioned two eight bit bytes, 6 least significant bits of any one correspondingly can inform the logic sector service condition of above-mentioned transmitting apparatus or receiving equipment.In above-mentioned two eight bit bytes, 2 highest significant positions of any one can be informed, the both sides of the logic sector provided at 6 least significant bits of the eight bit byte by above-mentioned correspondence have how many sectors correspondingly to be used by above-mentioned transmitting apparatus or receiving equipment.In various embodiments, in above-mentioned two eight bit bytes, 2 highest significant positions of any one can be informed, a previous known side of the logic sector provided at 6 least significant bits of the eight bit byte by above-mentioned correspondence have how many sectors correspondingly used by above-mentioned transmitting apparatus or receiving equipment.
In various embodiments, can provide usage space the multiplexing method and apparatus simultaneously carrying out DRP and PCA, will be described below.
In various embodiments, reserved (such as except " external BP (Alien BP) " type is reserved with the DRP of " device discovery (Device Discovery) " type at DRP under the rule that node can provide above, to be described below) during the MAS that takies and when such as allowing to offer an opportunity with spatial reuse described below, use PCA access medium above.Such as, contrast Figure 10, if the DRP that the first equipment 1002 and the 3rd equipment 1006 have for several MAS reserves, the simultaneous DRP that so above-mentioned second equipment 1004 and above-mentioned 4th equipment 1008 can or as above illustrate reserves, or above-mentioned second equipment 1004 can be selected contention channel and use its second logic sector 1004 by obtaining TXOP 2(after knowing by inference in DNAV with TM from oneself) communicates with above-mentioned 4th equipment 1008.
In various embodiments, with regard to regard to the MAS in the superframe of DRP and PCA, strict border may do not had, but equipment can select reserved time slot in superframes when available, and if the chance (as described in above and below) having the item in DNAV and TM of this equipment (entry) and provided by spatial reuse, if so allow, equipment can fight for channel.
In various embodiments, the method and apparatus of device discovery can be provided for, will be described below.
In various embodiments, can provide agreement, pass through provided agreement, equipment can find the miscellaneous equipment in its transmission range, can also find the respective direction of miscellaneous equipment about the said equipment.
Contrast Figure 10, can suppose that all devices in Figure 10 is in transmission range each other.According to each embodiment, can supplying method and equipment, pass through provided method and apparatus, each equipment in Figure 10 can find the direction of miscellaneous equipment about the said equipment.
In various embodiments, one or more equipment (such as each equipment) can be configured to, in the current operating channel of omni-direction transmissions, reserved (sole reservation) (such as not having related destination device address) of exclusive formula of " device discovery " type can be set up for some medium access time slot (MAS) in superframe at the said equipment.In any DRP IE of the above-mentioned type, destination device address can be considered as " reserved " and do not comprise any effective target device address, or identical with in the mode provided for " external BP " reservation types in ECMA standard.But, above-mentioned for omni-direction transmissions reserved may not wish to any current reserved or consulting reservedly cause conflict, or be not in view of content below and the cause of failures of the transmission occurred during the MAS asked, foregoing is TM, DNAV of the said equipment and comprises the IE received by the said equipment of received DRP IE.In various embodiments, if the reservation negotiation of " device discovery " type is conflicted with another reservation negotiation (such as according to " hard reservation (the Hard Reservation) " of ECMA standard), so in any Conflict solving agreement, relative to other type except " external BP " type, the priority that " device discovery " type is higher can be given.Conflict between two reservation negotiation with same type can to solve with that the similar mode provided in ECMA standard (such as will solve conflicting between two " device discovery " type negotiation).Once equipment foundation " device discovery " type has the reserved of little MAS, the said equipment just can transmit or receive or transmit and find data block.In the discovery data block provided above, first the said equipment can transmit omnidirectional range or control frame or command frame (such as having beacon or the frame of fixing transmission duration), can transmit oriented beacon or control frame or command frame (such as each beacon or frame have fixing transmission duration and embedded in interFrameGap) subsequently sequentially in each sector.
Figure 13 illustrates the reserved diagram 1300 according to embodiment.
Such as, in the exclusive reserved diagram of " device discovery " class of equipment in Fig. 10, each data illustrate above time shaft 1302.In Figure 13, the N number of superframe (superframe N) represented for arrow 1342 and N+1 the superframe (superframe N+1) represented by arrow 1344 show the reserved discovery transmission of data blocks that use is set up.N number of beacon periods (BP) 1304 can be arranged in N number of superframe 1342.N+1 beacon periods (BP) 1306 can be arranged in N+1 superframe 1344.
In various embodiments, each equipment can with the frequency preset (such as each superframe once, two superframes once or the superframe of other fixed qty any once) the exclusive formula set up of carrying out " device discovery " type reserves (such as not having the reserved of associated objects device address), and can transmit discovery data block.Such as, first equipment 1002 of Figure 10 can carry out the reserved of " device discovery " type and can transmit the first device discovery data block 1310.Such as, second equipment 1004 of Figure 10 can carry out the reserved of " device discovery " type and can transmit the second device discovery data block 1312.Such as, the 3rd equipment 1006 of Figure 10 can carry out the reserved of " device discovery " type and can transmit the 3rd device discovery data block 1308.Such as, the 4th equipment 1008 of Figure 10 can carry out the reserved of " device discovery " type and can transmit the 4th device discovery data block (not shown).Such as, the 5th equipment 1010 of Figure 10 can carry out the reserved of " device discovery " type and can transmit the 5th device discovery data block 1314.Such as, the 6th equipment 1012 of Figure 10 can carry out the reserved of " device discovery " type and can transmit the 6th device discovery data block (not shown).Such as, the 7th equipment 1014 of Figure 10 can carry out the reserved of " device discovery " type and can transmit the 7th device discovery data block 1316.
Below by the diagram 1318 of the above-mentioned 3rd device discovery data block 1308 of more detailed explanation.
Such as, above-mentioned 3rd device discovery data block 1308 can comprise beacon frame/control frame/command frame.Such as, omnidirectional's frame 1322 and the individual oriented frame of S (such as 4) (the oriented frame 1330 of the such as first oriented frame 1326, second, the 3rd oriented frame 1334 and the 4th oriented frame 1338) can be the above-mentioned 3rd parts finding data block.First guard time (guide time) 1320 (such as above-mentioned 3rd device discovery data block 1308 beginning) and the second guard time 1340 (such as above-mentioned 3rd device discovery data block 1308 end) can be arranged in above-mentioned 3rd device discovery data block 1308.First interFrameGap (interframe spacing) 1324 can be arranged between above-mentioned omnidirectional frame 1322 and above-mentioned first oriented frame 1326.Second interFrameGap 1328 can be arranged between above-mentioned first oriented frame 1326 and above-mentioned second oriented frame 1330.3rd interFrameGap 1332 can be arranged between above-mentioned second oriented frame 1330 and above-mentioned 3rd oriented frame 1334.4th interFrameGap 1336 can be arranged between above-mentioned 3rd oriented frame 1334 and above-mentioned 4th oriented frame 1338.
Above-mentioned first oriented frame 1326 can only in the first sector 1006 of above-mentioned 3rd equipment 1006 1middle transmission.Above-mentioned second oriented frame 1330 can only in the second sector 1006 of above-mentioned 3rd equipment 1006 2middle transmission.Above-mentioned 3rd oriented frame 1334 can only in the 3rd sector 1006 of above-mentioned 3rd equipment 1006 3middle transmission.Above-mentioned 4th oriented frame 1338 can only in the 4th sector 1006 of above-mentioned 3rd equipment 1006 4middle transmission.
In various embodiments, inform that the relevant reserved DRP IE of " device discovery " type can send in the superframe of the above-mentioned discovery data block of transport.Such as, consider MAS reserved by above-mentioned 3rd equipment 1006 of Figure 10 as shown in fig. 13 that, when above-mentioned 6th equipment 1012 in Figure 10 knows the end time of the prefix of above-mentioned omnidirectional frame 1322 and when receiving above-mentioned 3rd oriented frame 1334 from above-mentioned 3rd equipment 1006, above-mentioned 6th equipment 1012 can know that above-mentioned 3rd equipment 1006 can use the 3rd sector 1006 of above-mentioned 3rd equipment 1006 from above-mentioned 3rd equipment 1006 3(namely communicating with the 6th equipment 1012) is communicated with oneself.Above-mentioned 6th equipment 1012 can also upgrade its TM by above-mentioned information.It should be noted that in situation above, each adjacent equipment in the neighborhood of above-mentioned 3rd equipment 1006 can above-mentioned 3rd equipment above-mentioned reserved at the end of judge that above-mentioned 3rd equipment 1006 can use which sector of above-mentioned 3rd equipment to communicate with oneself.
When above-mentioned 6th equipment 1012 is in the discovery data block that the reserved middle transmission of oneself is similar, above-mentioned 3rd equipment 1006 can know the first sector 1012 that above-mentioned 6th equipment 1012 can use above-mentioned 6th equipment 1012 in a similar fashion by inference 1come communicate with above-mentioned 3rd equipment 1006 and upgrade the TM of above-mentioned 3rd equipment 1006.By said process, above-mentioned 3rd equipment 1006 and above-mentioned 6th equipment 1012 can set up their respective directions.When receiving topological IE from above-mentioned 3rd equipment 1006 and above-mentioned 6th equipment 1012, above-mentioned 3rd equipment 1006, above-mentioned 6th equipment 1012 and miscellaneous equipment can upgrade their TM.Therefore by use " device discovery " type the MAS that reserves and by its topological IE of each device transmission, equipment can obtain the neighborhood direction relevant with armamentarium in its neighborhood.
In various embodiments, can be default from the order of the above-mentioned oriented frame of device transmission, such as, last sector sequentially to the said equipment from first sector of the said equipment.
In various embodiments, be not that the exclusive formula of carrying out " device discovery " type is reserved, but each equipment can carry out reserved (such as in above-mentioned DRP IE) of " device discovery " type with relevant target device address now.Equipment can be advocated the discovery procedure of paired equipment by this.
Figure 14 illustrates the reserved diagram 1400 according to embodiment.
In the diagram that the device-to-device of " device discovery " type of carrying out at above-mentioned equipment is as shown in Figure 10 reserved, each data illustrate above the time shaft 1412 of the N number of superframe (superframe N) represented by arrow 1404.N number of beacon periods (BP) 1406 can be arranged in N number of superframe 1404.N+1 beacon periods (BP) 1414 can be arranged in superframe (not shown in detail) subsequently.
In various embodiments, if a certain equipment wants the direction knowing another equipment, so the said equipment may be wanted to set up the reserved of " device discovery " type with another equipment above-mentioned.Such as, the 3rd equipment 1006 of above-mentioned Figure 10 can carry out the reserved of " device discovery " type with above-mentioned 6th equipment 1012, and can exchange the first device discovery data block 1408.Such as, first equipment 1002 of above-mentioned Figure 10 can carry out the reserved of " device discovery " type with above-mentioned 5th equipment 1010, and can exchange the second device discovery data block 1410.
In various embodiments, the above-mentioned reserved owner can start to transmit omnidirectional range or control frame or command frame (such as having beacon or the frame of constant transmissions duration), next sequentially transmits oriented beacon or control frame or command frame (such as have fixing transmission duration or have the beacon of interFrameGap or the frame of embedding) in each sector.Subsequently, above-mentioned target device sequentially can transmit oriented beacon or command frame or control frame (such as have fixing transmission duration or have the beacon of interFrameGap or the frame of embedding) in its each sector.
Finding shown in the details 1416 of data block 1408 for above-mentioned first according to the format sample that each embodiment can participate in the discovery data block transmitted between this reserved above-mentioned two equipment.Such as, frame 1420,1424,1428,1432,1436,1440,1444,1448 and 1452 can be the part that above-mentioned discovery data block exchanges, and will be described below.
Such as, above-mentioned first device discovery data block 1408 can comprise beacon frame/control frame/command frame.Such as, omnidirectional's frame 1420 and the individual oriented frame of 2S (such as 8) (the oriented frame 1428 of the such as first oriented frame 1424, second, the 3rd oriented frame 1432, the 4th oriented frame 1436, the 5th oriented frame 1440, the 6th oriented frame 1444, the 7th oriented frame 1448, the 8th oriented frame 1452) can be parts for above-mentioned discovery data block.First guard time 1418 (such as in above-mentioned first device discovery data block 1408 beginning) and the second guard time 1454 (such as in above-mentioned first device discovery data block 1408 end) can be arranged in above-mentioned first device discovery data block 1408.First interFrameGap 1422 can be arranged between above-mentioned omnidirectional frame 1420 and above-mentioned first oriented frame 1424.Second interFrameGap 1426 can be arranged between above-mentioned first oriented frame 1424 and above-mentioned second oriented frame 1428.3rd interFrameGap 1430 can be arranged between above-mentioned second oriented frame 1428 and above-mentioned 3rd oriented frame 1432.4th interFrameGap 1434 can be arranged between above-mentioned 3rd oriented frame 1432 and above-mentioned 4th oriented frame 1436.5th interFrameGap 1438 can be arranged between above-mentioned 4th oriented frame 1436 and above-mentioned 5th oriented frame 1440.6th interFrameGap 1442 can be arranged between above-mentioned 5th oriented frame 1440 and above-mentioned 6th oriented frame 1444.7th interFrameGap 1446 can be arranged between above-mentioned 6th oriented frame 1444 and above-mentioned 7th oriented frame 1448.8th interFrameGap 1450 can be arranged between above-mentioned 7th oriented frame 1448 and above-mentioned 8th oriented frame 1452.
Above-mentioned first oriented frame 1424 can by above-mentioned 3rd equipment 1006 only in its first sector 1006 1middle transmission.Above-mentioned second oriented frame 1428 can by above-mentioned 3rd equipment 1006 only in its second sector 1006 2middle transmission.Above-mentioned 3rd oriented frame 1432 can by above-mentioned 3rd equipment 1006 only in its 3rd sector 1006 3middle transmission.Above-mentioned 4th oriented frame 1436 can by above-mentioned 3rd equipment 1006 only in its 4th sector 1006 4middle transmission.Above-mentioned 5th oriented frame 1440 can by above-mentioned 6th equipment 1012 only in its first sector 1012 1middle transmission.Above-mentioned 6th oriented frame 1444 can by above-mentioned 6th equipment 1012 only in its second sector 1012 2middle transmission.Above-mentioned 7th oriented frame 1448 can by above-mentioned 6th equipment 1012 only in its 3rd sector 1012 3middle transmission.Above-mentioned 8th oriented frame 1452 can by above-mentioned 6th equipment 1012 only in its 4th sector 1012 4middle transmission.
Such as, consideration is set up between above-mentioned 3rd equipment 1006 and above-mentioned 6th equipment 1012, above-mentioned 3rd equipment 1006 reserving as possessory " device discovery " type, when above-mentioned 6th equipment 1012 be realised that the end time of the prefix of above-mentioned omnidirectional frame 1420 from above-mentioned 3rd equipment 1006 and receives above-mentioned 3rd oriented frame 1432 from above-mentioned 3rd equipment 1006, above-mentioned 6th equipment 1012 can judge that above-mentioned 3rd equipment 1006 can use the 3rd sector 1006 of above-mentioned 3rd equipment 1006 3(namely communicating with above-mentioned 6th equipment 1012) is communicated with oneself.About same discovery data block exchange above, when above-mentioned 3rd equipment 1006 be realised that the end time of the prefix of above-mentioned omnidirectional frame 1420 from above-mentioned 3rd equipment 1006 and receives above-mentioned first oriented frame 1424 from above-mentioned 6th equipment 1012, above-mentioned 3rd equipment 1006 can judge that above-mentioned 6th equipment 1012 can use the first sector 1012 of above-mentioned 6th equipment 1012 1(namely communicating with above-mentioned 3rd equipment 1006) is communicated with oneself.So from after receiving topological IE each other, above-mentioned 6th equipment 1012 and above-mentioned 3rd equipment 1006 correspondingly can upgrade their TM.
In the embodiment of Figure 14, frame 1420,1424,1428,1432 and 1436 can transmit from above-mentioned 3rd equipment 1006, and frame 1440,1444,1448 and 1452 can transmit from above-mentioned 6th equipment 1012.Reserve by using more paired like multiclass " device discovery " type and use relevant discovery data block to exchange, equipment can set up the direction in its neighborhood.Equipment can use topological IE to exchange the information of concerned direction described above.
In various embodiments, that is undertaken by above-mentioned two reserved participants reserves for the aforementioned of omni-direction transmissions, may wish not to any current reserved or consulting reservedly cause conflict, or be not the reason of the transmission that interference occurs during the MAS in view of content requests below, foregoing is TM, DNAV of above-mentioned two participants and comprises the IE received of received DRP IE.
Figure 15 illustrates the diagram 1500 transmitted in beacon slot according to the beacon of embodiment.
Each data illustrate above the time shaft 1502 of the N number of superframe (superframe N) represented by arrow 1558.N number of beacon periods (BP) 1504 can be arranged in N number of superframe 1558.
In each embodiment, one or more equipment (such as each equipment) can send beacon block (beacon block) in its beacon slot.In the beacon slot of equipment, first equipment can transmit the omnidirectional range with constant transmissions duration, then oriented beacon (such as in each sector sequential delivery) is transmitted subsequently, such as each oriented beacon (such as there is the oriented beacon of the interFrameGap of embedding) with fixing duration.Such as, the first beacon slot 1506 of above-mentioned first equipment 1002 can be provided.Such as, the second beacon slot 1508. of above-mentioned 3rd equipment 1006 can be provided
In the more detailed icon 1510 of above-mentioned first beacon slot 1506, above-mentioned first beacon slot can comprise the first guard time 1512, the oriented frame 1522 of omnidirectional's frame 1514, first interFrameGap the 1516, first oriented frame 1518, second interFrameGap 1520, second, the 3rd interFrameGap 1524, the 3rd oriented frame 1526, the 4th interFrameGap 1528, the 4th oriented frame 1530 and the second guard time 1532.Above-mentioned first oriented frame 1518 can only in the first sector 1002 of above-mentioned first equipment 1002 1middle transmission.Above-mentioned second oriented frame 1522 can only in the second sector 1002 of above-mentioned first equipment 1002 2middle transmission.Above-mentioned 3rd oriented frame 1526 can only in the 3rd sector 1002 of above-mentioned first equipment 1002 3middle transmission.Above-mentioned 4th oriented frame 1530 can only in the 4th sector 1002 of above-mentioned first equipment 1002 4middle transmission.
In the more detailed icon 1534 of above-mentioned second beacon slot 1508, above-mentioned second beacon slot can comprise the first guard time 1536, the oriented frame 1546 of omnidirectional's frame 1538, first interFrameGap the 1540, first oriented frame 1542, second interFrameGap 1544, second, the 3rd interFrameGap 1548, the 3rd oriented frame 1550, the 4th interFrameGap 1552, the 4th oriented frame 1554 and the second guard time 1556.Above-mentioned first oriented frame 1542 can only in the first sector 1006 of above-mentioned 3rd equipment 1006 1middle transmission.Above-mentioned second oriented frame 1546 can only in the second sector 1006 of above-mentioned 3rd equipment 1006 2middle transmission.Above-mentioned 3rd oriented frame 1550 can only in the 3rd sector 1006 of above-mentioned 3rd equipment 1006 3middle transmission.Above-mentioned 4th oriented frame 1554 can only in the 4th sector 1006 of above-mentioned 3rd equipment 1006 4middle transmission.
Exemplarily, when the 6th equipment 1012 in above-mentioned Figure 10 is known the end time of the prefix of above-mentioned omnidirectional range 1538 from above-mentioned 3rd equipment 1006 and receives above-mentioned 3rd oriented beacon 1550 from above-mentioned 3rd equipment 1006, above-mentioned 6th equipment 1012 can know that above-mentioned 3rd equipment 1006 can use the 3rd sector 1006 of above-mentioned 3rd equipment 1006 3(namely communicating with above-mentioned 6th equipment 1012) is communicated with oneself.Above-mentioned 6th equipment 1012 can also with its TM of above-mentioned information updating.It should be noted that hereinbefore, each equipment in the neighborhood of above-mentioned 3rd equipment 1006 can judge at the end of the beacon slot of above-mentioned 3rd equipment 1006 that above-mentioned 3rd equipment 1006 can use which sector of above-mentioned 3rd equipment 1006 to communicate with.Equipment can transmit topological IE, to exchange the information of concerned direction.
In various embodiments, when sending similar beacon block in the beacon slot of above-mentioned 6th equipment 1012 at oneself, above-mentioned 3rd equipment 1006 can know the first sector 1012 that above-mentioned 6th equipment 1012 can use above-mentioned 6th equipment 1012 in a similar fashion by inference 1come communicate with above-mentioned 3rd equipment 1006 and upgrade the TM of above-mentioned 3rd equipment 1006.By above-mentioned steps, above-mentioned 3rd equipment 1006 and above-mentioned 6th equipment 1012 can set up their respective directions.When miscellaneous equipment receives topological IE from above-mentioned 3rd equipment 1006 and above-mentioned 6th equipment 1012, miscellaneous equipment can upgrade their TM.Therefore, by using above-mentioned beacon and by its topological IE of each device transmission, equipment can obtain the neighborhood direction about all devices in its neighborhood.Figure 15 shows said method, and wherein, frame 1518,1522,1526 and 1530 is oriented beacon frames, and frame 1514 is omnidirectional's frames.
In various embodiments, each equipment can use the contention access of media instead of the MAS that reserves to transmit discovery data block.But, want to transmit finding that the said equipment of data block may wish to guarantee that media are that omnidirectional can use according to itself TM and DNAV.
Figure 16 illustrates the discovery data block 1600 according to embodiment.Each beacon/control/order data illustrates above time shaft 1602.During first time period, media may be in the busy condition as shown in block 1604.Then, after Arbitration Inter Frame Space (AIFS) 1606, one or more backoff period (back off slot) 1636 can be provided, such as the first backoff period 1608, second backoff period 1610, one or more other backoff period 1612 and last backoff period 1614.During above-mentioned AIFS 1606 and above-mentioned backoff period 1636, media can be in idle condition, as shown in arrow 1634.After this oriented frame 1624 of omnidirectional's frame 1616, first interFrameGap the 1618, first oriented frame 1620, second interFrameGap 1622, second, the 3rd interFrameGap 1626, the 3rd oriented frame 1628, the 4th interFrameGap 1630 and the 4th oriented frame 1632 can be provided.
In various embodiments, frame 1616,1620,1624,1628 and 1632 can be a part for above-mentioned discovery data block.In various embodiments, above-mentioned first omnidirectional's frame 1616 (the such as control frame transmitted during the above-mentioned discovery data block of equipment, it can be have and the similar form of RTS/CTS frame " device discovery is initiated " frame) duration field, the time needed for above-mentioned discovery transmission of data blocks can have been comprised.From the equipment sending the equipment of above-mentioned discovery data block and receive above-mentioned omnidirectional frame (usually such as control frame), can with being included in the duration of obeying in above-mentioned omnidirectional frame that rule receives and arranging in all sectors of the said equipment any one DNAV.
In various embodiments, equipment can transmit topological IE, to exchange the information of concerned direction.
In various embodiments, one or more equipment (such as each equipment) can use the contention access of media instead of the MAS that reserves to find data block with another devices exchange.But, want the equipment of initiating above-mentioned discovery data block may wish to guarantee that media are that omnidirectional can use according to TM and DNAV of the said equipment.
Figure 17 illustrates the paired discovery data block 1700 according to embodiment.Such as, for the paired discovery data block communications (being described the 3rd equipment 1006 and the 6th equipment 1012 for above-mentioned that) using medium contentions access, illustrate above each data time shaft in fig. 17.During first time period, media may be in the busy condition as block 1704 represents.Then, after AIFS1706, one or more backoff period 1736 can be provided, such as the first backoff period 1708, second backoff period 1710, one or more other backoff period 1712 and last backoff period 1714.During above-mentioned AIFS 1706 and above-mentioned backoff period 1736, media may be in idle condition, as shown in arrow 1734.After this first omnidirectional's frame 1716 can be provided, first interFrameGap 1718, second omnidirectional's frame 1738, second interFrameGap 1740, first oriented frame 1720, 3rd interFrameGap 1722, second oriented frame 1724, 4th interFrameGap 1726, 3rd oriented frame 1728, 5th interFrameGap 1730, 4th oriented frame 1732, 6th interFrameGap 1742, 5th oriented frame 1744, 7th interFrameGap 1746, 6th oriented frame 1748, 8th interFrameGap 1750, 7th oriented frame 1752, 9th interFrameGap 1754 and the 8th oriented frame 1756.
Such as, above-mentioned 3rd equipment 1006 shown in Figure 10 can obtain TXOP, to initiate to find that data block exchanges with above-mentioned 6th equipment 1012.Above-mentioned frame 1716,1738,1720,1724,1728,1732,1744,1748,1752 and 1756 can be a part for above-mentioned discovery data block.Such as, above-mentioned frame 1716,1720,1724,1728,1732 can transmit from above-mentioned 3rd equipment 1006, and above-mentioned frame 1738,1744,1748,1752 and 1756 can transmit from above-mentioned 6th equipment 1012.
Similar with above-described content, above-mentioned oriented frame can only transmit in each sector.
In various embodiments, the duration field of the omnidirectional's frame transmitted during the above-mentioned discovery data block of equipment can comprise the remaining time needed for above-mentioned discovery transmission of data blocks.The DNAV (such as obeying above-mentioned rule) of all sectors of above-mentioned receiving equipment can be set from the equipment participating in equipment that above-mentioned discovery data block exchanges and receive above-mentioned omnidirectional frame.
Such as, about device discovery, when above-mentioned 3rd equipment 1006 obtains TXOP (rule such as provided above basis) that be used for omni-direction transmissions, first it can transmit omnidirectional's frame, and above-mentioned omnidirectional frame can be " device discovery request (Device Discovery the Request) " control frame (such as can have the frame with the similar form of RTS frame) being called frame 1716 in Figure 17 usually.In the duration field of above-mentioned omnidirectional frame, above-mentioned 3rd equipment 1006 can comprise following duration value, and this duration value covers the time period terminating the end of transmission to frame 1756 from the prefix of above-mentioned omnidirectional frame.When all adjacent Supervision of above-mentioned 3rd equipment 1006 hears above-mentioned frame 1716, all adjacent equipment can arrange their respective DNAV according to above-mentioned rule.When above-mentioned 6th equipment 1012 received frame 1716, it can check itself DNAV and TM, if (rule such as by providing above) it can participate in the communication with above-mentioned 3rd equipment 1006 in the mode of omnidirectional, so it can send omnidirectional's frame, and this omnidirectional's frame can be " device discovery response (Device Discovery Response) " control frame (such as can have the frame with the similar form of CTS frame) of frame 1738 in Figure 17.After received frame 1738, above-mentioned all devices can such as according to their respective DNAV of above-mentioned Policy Updates.When above-mentioned 3rd equipment 1006 received frame 1738, it can start order and directionally transmit its frame for device discovery, and above-mentioned 6th equipment 1012 can carry out similar sequential delivery, as shown in figure 17.
In various embodiments, equipment can transmit topological IE, to exchange the information of concerned direction.
In various embodiments, the device discovery in control channel can be provided, will be described below.
In various embodiments, as mentioned above, the said equipment discovery mechanism can occur in equipment and send in the channel of the beacon in beacon slot, the standard operation channel of such as the said equipment.But, also allow device discovery to occur in and be exclusively used in the Special controlling channel of this purposes.Each embodiment mentioned above can be implemented by using the independent control channel being used for device discovery.In various embodiments, be appreciated that and receive reservation negotiation (reserved such as by examination " device discovery " type) by all devices, can ask to reserve in above-mentioned control channel.In the case, perhaps miscellaneous equipment can be reserved or access medium in the standard operation channel sending beacon in beacon slot in identical time slot simultaneously.According to each embodiment, the timing base (timing reference) of above-mentioned control channel can be arranged to identical with superframe timing (superframe timing) of the standard operation channel of beacon in above-mentioned transmission beacon slot.If equipment participates in device discovery procedure, so its can its for device discovery and during wanting the time slot used by its tested rotating platform to above-mentioned control channel.Each embodiment can also be operated in the control channel that has and retrain below: the equipment in above-mentioned control channel only can lay oneself open in the time in above-mentioned control channel at this equipment, finds the direction of the equipment in above-mentioned control channel.In various embodiments, listen to the owner or target device set up reserved after, the equipment (being such as not limited to the owner/target device) of the said equipment discovery procedure is participated in request, can during the time slot represented by the relevant DRPIE from the above-mentioned owner or target device, by the tested rotating platform of this equipment to above-mentioned control channel.
In various embodiments, method for spacial multiplex and the equipment of the equipment with varying number sector can be provided for, will be described below.
Above, the exemplary hypothesis having had an individual sector of " S " (S=4) of equal number by each equipment provides the example of spatial reuse.The amendment of example given above or example are described for the spatial reuse may with the equipment of varying number sector is described below.
Figure 18 shows the topology information element format 1800 according to embodiment.Several (item) of above topology information element format 1800 and the every identical of the topology information element format 900 shown in Fig. 9, therefore can represent with identical Reference numeral, and can omit identical description.
In various embodiments, the topology information element format 1800 of Figure 18 is compared with the topology information element format 900 of Fig. 9, relative to above-described topology information element format 900, the additional octets 1808 of indication equipment by the number of sectors of use can be added in above topology IE form 1800.
Field 1808 for number of sectors can have the length of 1 eight bit byte, as shown in field 1806.The total length of information in above topology information element format 1800 can be provided in length field 1804.Above-mentioned length field 1804 can have the length of 1 eight bit byte, as shown in field 1802.Such as, the length with the topology information element of N number of device address can have the length of 1+K+2N eight bit byte (such as, 1 eight bit byte is used for the field 1808 of number of sectors, K eight bit byte is used for above topology information bitmap field 918,2 eight bit bytes for each in the said equipment address field 920,924).In various embodiments, the Optional Form contrasting the topology information bitmap that Fig. 9 describes above may be used for the form 1800 of above topology IE.
In various embodiments, the sector maximum quantity of equipment can be 64.
In various embodiments, with above-described those are similar, but the form 1800 of above topology IE and the Optional Form (will be described) of TM can be used below for having the method for spacial multiplex based on DRP and PCA of equipment of varying number antenna and equipment.
In various embodiments, if the said equipment has sector that is variable or varying number, the Optional Form of above-mentioned TM (form that such as table 3 provides) can so be provided.
Table 3: each row of the Optional Form of topological matrix (TM)
In various embodiments, the Optional Form of above-mentioned TM can have 18 row as shown in table 3.Every a line can correspond to the particular link (such as the link of two equipment rooms) in network.Every a line can comprise the link information about following content: first device address (such as source) of respective link or be in other words " device address 1 of link ", the second device address of respective link (such as converging) or be in other words " device address 2 of link ", the optimal logic sector of the first device address of respective link and the optimal logic sector of the second device address of respective link.Each row in 8 row on " logic sector of device address 1 " hurdle of above-mentioned TM can correspond to 1 bit.6 least significant bits in above-mentioned " logic sector of device address 1 " hurdle can be arranged to the respective logic sector that device address 1 is used for communicating with device address 2.6 least significant bits in above-mentioned " logic sector of device address 1 " hurdle can be used for the numbering (it can be that 0 (or 1) is to the arbitrary numerical value in 63 (or 64)) of the logic sector communicated with device address 2 in indication equipment address 1.The highest significant position (row) on above-mentioned " logic sector of device address 1 " hurdle can represent, whether the logic sector of large 1 (mould 64) of that numerical value represented than above-mentioned 6 least significant bits by this hurdle also can be used for communicating with the said equipment address 2 by the said equipment address 1 (if above-mentioned highest significant position is set to 1).The secondary highest significant position on above-mentioned " logic sector of device address 1 " hurdle can represent, whether the logic sector of less by 1 than that numerical value represented by above-mentioned 6 least significant bits on this hurdle (mould 64 ,-1 is equivalent to 63) also can be used for communicating with the said equipment address 2 by the said equipment address 1 (if above-mentioned highest significant position is set to 1).So the equipment of it should be noted that can use nearly three sectors to communicate.
In various embodiments, each row in 8 of " logic sector of device address 2 " hurdle row of above-mentioned TM can correspond to 1 bit.Above-mentioned 6 least significant bits in above-mentioned " logic sector of device address 2 " hurdle can be arranged to the respective logic sector that device address 2 is used for communicating with device address 1.Above-mentioned 6 least significant bits in above-mentioned " logic sector of device address 2 " hurdle can be used for the logical sector number (it can be that 0 (or 1) is to the arbitrary numerical value in 63 (or 64)) that communicates with device address 1 in indication equipment address 2.The highest significant position (row) on above-mentioned " logic sector of device address 2 " hurdle can represent, whether the logic sector of large 1 (mould 64) of that numerical value represented than above-mentioned 6 least significant bits by this hurdle also can be used for communicating with the said equipment address 1 by the said equipment address 2 (if above-mentioned highest significant position is set to 1).The secondary highest significant position on above-mentioned " logic sector of device address 2 " hurdle can represent, whether the logic sector of less by 1 than that numerical value represented by above-mentioned 6 least significant bits on this hurdle (mould 64 ,-1 is equivalent to 63) also can be used for communicating with the said equipment address 1 by the said equipment address 2 (if above-mentioned highest significant position is set to 1).Table 4 gives example, and it illustrates the TM kept by above-mentioned first equipment 1002 of Figure 10.
Table 4: about the Optional Form example of the TM of first equipment 1002 of Figure 10
In various embodiments, in " logic sector of device address 1 " hurdle or " logic sector of device address 2 " hurdle, any one highest significant position and time both highest significant positions common (as 2 bits) can represent, have how many sectors can be used for communication by device address 1 or device address 2 respectively in the logic sector both sides that 6 least significant bits by corresponding hurdle represent.So in the case, equipment can use nearly seven logic sectors to come and another devices communicating.In various embodiments, in " logic sector of device address 1 " hurdle or " logic sector of device address 2 " hurdle, any one above-mentioned two highest significant positions and time highest significant position can be informed, a previous known side of the logic sector provided at above-mentioned 6 least significant bits by corresponding hurdle has how many sectors can be used for communication by device address 1 or device address 2 respectively.
In various embodiments, (such as, each superframe once or every L the time period that often can preset according to received device discovery result and topological IE of the said equipment 0individual superframe once, wherein L 0can be greater than 1 natural number) upgrade the Optional Form of above-mentioned TM.Needed for Optional Form that come from miscellaneous equipment, that upgrade above-mentioned TM, can receive via the beacon employing the topological IE introduced in the early time about the information of other link (wherein the said equipment is not summit).
In various embodiments, each equipment can have the as many DNAV of the number of sectors had with it.It should be noted that each equipment can learn from received topological IE each adjacent equipment of the said equipment has how many sectors.Therefore described above, equipment can be known, in advance in respect of how many oriented frame from the owner of above-mentioned reserved (device discovery) and estimate when obtaining the oriented frame from above-mentioned possessory particular sector transmission.As mentioned above, target device can be known, pre-in respect of how many oriented frame from the above-mentioned reserved owner, estimate when obtaining the oriented frame from above-mentioned possessory particular sector transmission, and when above-mentioned target device should start its oriented transmission within the data block period (because frame pitch, transmit the order of oriented frame and omnidirectional's frame transmission duration and oriented frame transmission duration by sector, can be fixing and known).Similarly, owner's equipment can be known, pre-in respect of how many oriented frame from above-mentioned reserved target device, estimate at the oriented frame when obtaining transmit from the particular sector of above-mentioned target device, and the above-mentioned owner estimate to exchange (because of the owner by knowing the number of sectors in above-mentioned target device from the topological IE of target device when completing above-mentioned data block; The above-mentioned owner can use above-mentioned number of sectors as the criterion of reserved number of timeslots).As mentioned above, the oriented beacon quantity of transmission can be identical with the number of sectors that the equipment of the above-mentioned oriented beacon of transmission has.The information that each adjacent equipment of equipment is collected according to the topological IE (being included in above-mentioned omnidirectional range) by receiving from this equipment, can know that above-mentioned adjacent equipment can be estimated to obtain how many oriented beacon (beacon block) from this equipment in beacon slot.In various embodiments, the beacon slot of equipment can be large enough to hold the beacon block being suitable for nearly such as 1 omnidirectional range and 64 oriented beacon transmissions.As mentioned above, each equipment can be known, in advance in respect of how many oriented frame from owner's (transmitting the equipment of above-mentioned discovery data block) of above-mentioned TXOP and estimate at the oriented frame when obtaining the possessory particular sector transmission from above-mentioned TXOP.As mentioned above, above-mentioned receiving equipment can be known, pre-in respect of the owner of how many oriented frame from above-mentioned TXOP, estimate at the oriented frame when obtaining the possessory particular sector transmission from above-mentioned TXOP, and when above-mentioned receiving equipment can start its oriented transmission within the above-mentioned data block period (because above-mentioned frame pitch, transmit the order of oriented frame and above-mentioned omnidirectional frame transmission duration and above-mentioned oriented frame transmission duration by sector, can be fixing and known).Similarly, the owner of above-mentioned TXOP can know, pre-in respect of how many oriented frame from above-mentioned receiving equipment (equipment by omnidirectional's frame of the above-mentioned discovery data block beginning of the said equipment sends to), estimate at the oriented frame when obtaining transmit from the particular sector of above-mentioned receiving equipment, and the above-mentioned owner estimate to exchange (because of the above-mentioned owner by knowing the number of sectors in above-mentioned receiving equipment from the topological IE of receiving equipment when completing data block; The owner of above-mentioned TXOP can use above-mentioned number of sectors as the criterion of duration field arranging above-mentioned omnidirectional frame, and above-mentioned omnidirectional frame is that the owner of above-mentioned TXOP sends when for transmitting and finding that the TXOP of data block starts).
In various embodiments, the possibility for the frame relevant with device discovery may be used for above about each embodiment that device discovery describes.In these possibilities, each oriented frame (in any one embodiment for device discovery) that equipment can replace this equipment to transmit for device discovery with omnidirectional's frame.That is, equipment never at discovery data block or beacon block or can find that data block transmits oriented frame in exchanging.In these possibilities, receive above-mentioned first omnidirectional's frame from above-mentioned transmitting apparatus under omni-directional mode after, above-mentioned receiving equipment can within the time period of above-mentioned transmitting apparatus ensuing omnidirectional frame transmission afterwards, the receive direction of the above-mentioned receiving equipment of sector order ground adjustment one by one.Exemplarily, above-mentioned 3rd equipment 1006 of Figure 10 can transmit five omnidirectional's frames, above-mentioned 6th equipment 1012 is after receiving first omnidirectional's frame from above-mentioned 3rd equipment 1006, can within second omnidirectional's frame transmission time by its tested rotating platform to its first sector, and next within omnidirectional's frame transmission time afterwards by its tested rotating platform to an ensuing sector.By possibility above, topology information bitmap field in above topology IE can have identical form, but the logic sector service condition represented by the element " n " in above topology information bitmap field can represent the said equipment is used for the logic sector of the said equipment that equipment " n " adjacent to it communicate.
In various embodiments, the method for spacial multiplex based on IEEE802.15.3 network with centerized fusion device and equipment can be provided for, will be described below.
As described above, the spatial reuse strategy of distributed network can be provided for according to each embodiment, in above-mentioned distributed network, not have node can carry out centralized control to miscellaneous equipment.As hereafter by explanation, the spatial reuse strategy of the centralized network based on IEEE 802.15.3 can be provided for according to each embodiment.Contrast Figure 10, can suppose that the node shown in Figure 10 forms piconet (Pico Net) and the node (such as above-mentioned 3rd node 1006) preset can be piconet coordinator (PNC).Can suppose further, above-mentioned node can work in proposed superframe structure, is described by contrast Figure 19 below.
In various embodiments, following method and apparatus can be provided, by the method and equipment, the equipment (such as above-mentioned 3rd equipment 1006 is as above-mentioned PNC) in Figure 10 can take spatial reuse in contention access period (CAP) and Channel Time Allocation Period (CTAP) period.In various embodiments, in centralized network mentioned above, above-mentioned PNC (such as above-mentioned 3rd equipment 1006) can keep TM mentioned above.Miscellaneous equipment also can keep oneself TM.In various embodiments, each equipment (even such as above-mentioned PNC) one group of DNAV that the number of sectors that has with it can be kept suitable.As will be described below, can provide for the method for spacial multiplex of CAP and CTAP and equipment and device discovery strategy.
Figure 19 shows the diagram of the superframe structure for centralized network 1900 according to embodiment.
Each data illustrate above the time shaft 1970 of the N number of superframe (superframe N) represented by arrow 1968.The beacon block 1904 of above-mentioned PNC (such as above-mentioned 3rd equipment 1006) can be set in above-mentioned N number of superframe 1968.One or more device discovery time slot 1916 can be set, such as the first device discovery time slot 1906, second device discovery time slot 1908, one or more other device discovery time slot 1910 and last device discovery time slot 1912.
Such as between the beacon block 1904 and the said equipment discovery time slot 1916 of above-mentioned PNC, the contention access period (CAP) 1914 can be set.Such as after the said equipment finds time slot 1916, Channel Time Allocation Period (CTAP) 1918 can be set.
In the more detailed icon 1944 of the beacon frame/command frame/control frame of the beacon block 1904 of above-mentioned PNC, the beacon block 1904 of above-mentioned PNC can comprise the first guard time 1946, the oriented frame 1956 of omnidirectional's frame 1948, first interFrameGap the 1950, first oriented frame 1952, second interFrameGap 1954, second, the 3rd interFrameGap 1958, the 3rd oriented frame 1960, the 4th interFrameGap 1962, the 4th oriented frame 1964 and the second guard time 1966.Above-mentioned first oriented frame 1952 can only transmit in first sector of above-mentioned PNC.Above-mentioned second oriented frame 1956 can only transmit in second sector of above-mentioned PNC.Above-mentioned 3rd oriented frame 1960 can only transmit in the 3rd sector of above-mentioned PNC.Above-mentioned 4th oriented frame 1964 can only transmit in the 4th sector of above-mentioned PNC.
In the more detailed icon 1920 of the beacon frame/command frame/control frame of above-mentioned first device discovery time slot 1906 (such as the device discovery time slot of above-mentioned first equipment 1002), above-mentioned first device discovery time slot 1906 can comprise the first guard time 1922, the oriented frame 1932 of omnidirectional's frame 1924, first interFrameGap the 1926, first oriented frame 1928, second interFrameGap 1930, second, the 3rd interFrameGap 1934, the 3rd oriented frame 1936, the 4th interFrameGap 1938, the 4th oriented frame 1940 and the second guard time 1942.Above-mentioned first oriented frame 1928 can only in the first sector 1002 of above-mentioned first equipment 1002 1middle transmission.Above-mentioned second oriented frame 1932 can only in the second sector 1002 of above-mentioned first equipment 1002 2middle transmission.Above-mentioned 3rd oriented frame 1936 can only in the 3rd sector 1002 of above-mentioned first equipment 1002 3middle transmission.Above-mentioned 4th oriented frame 1940 can only in the 4th sector 1002 of above-mentioned first equipment 1002 4middle transmission.
In various embodiments, above-mentioned PNC can distribute " device discovery time slot (DDS) " with fixing duration to each equipment in superframes.Find in time slot at the said equipment, the device discovery data block (such as there is the frame described in conjunction with Figure 13) that device transmission is mentioned above.Find that in data block, equipment can transmit omnidirectional's frame and follow one group of oriented frame after above-mentioned omnidirectional frame at the said equipment.In various embodiments, above-mentioned PNC oneself can also for each superframe transmissions beacon block 1904 with regard to it, above-mentioned beacon block 1904 is by omnidirectional range 1948 and follow one group after above-mentioned omnidirectional range 1948 oriented beacon 1952,1956,1960 and 1964 (as mentioned above, and such as have those frames described in conjunction with Figure 15).In other words, in various embodiments, the omnidirectional range that above-mentioned PNC sends can be replaced by beacon block mentioned above.Figure 19 shows the superframe structure according to the beacon block 1904 with above-mentioned PNC of each embodiment, CAP 1914, CTAP 1918 and device discovery time slot 1916.In Figure 19, the said equipment finds that time slot is depicted as continuous print.But the said equipment finds that time slot can in any part of above-mentioned superframe and be the non-conterminous time slot retrained below having: above-mentioned PNC can distribute at least one device discovery time slot to each equipment for the time of often presetting (such as the superframe of each superframe or every fixed qty).In various embodiments, above-mentioned PNC always can comprise topological IE (such as having the topological IE of form mentioned above) in the omnidirectional range of its each superframe.In various embodiments, each equipment can such as each superframe once or for every fixed qty superframe once, in its device discovery time slot, transmit the topological IE in its omnidirectional's frame.The form of the topological IE of above-mentioned PNC and miscellaneous equipment and service condition can be similar with detailed description provided above, therefore will omit identical description.
In various embodiments, the reserved bit that can obtain in channel time request (CTRq) control field (Channel Time Request Control field) of channel time request (Channel Time Request) command frame (in IEEE 802.15.3 specification) can be used.If above-mentioned bit is set to 1, so asked channel time allocation (CTA) may be used for device discovery.In various embodiments, in the above-mentioned CTRq control field of IEEE 802.15.3 specification, spendable reserved bit can be used for the size of above-mentioned CTRq control field to expand to two eight bit bytes, and one of reserved bit in second eight bit byte (the additional new eight bit byte introduced) can be used for representing that whether reservation request is for device discovery (DDS).The source ID (SrcID) of the CTA of " device discovery " type can be identical with object ID (DestID).If never transmission equipment finds data block in each of equipment (DEV) superframe of predetermined number (such as mMaxLostBeacons) in the past, the said equipment so can not be allowed to use in both CTAP or CAP in superframes any one.
Exemplarily, when above-mentioned 6th equipment 1012 of Figure 10 is known the end time of the prefix of above-mentioned omnidirectional range frame 1948 from above-mentioned 3rd equipment 1006 and receives above-mentioned 3rd oriented beacon frame 1960 from above-mentioned 3rd equipment 1006, above-mentioned 6th equipment 1012 can know that above-mentioned 3rd equipment 1006 can use the 3rd sector 1006 of above-mentioned 3rd equipment 1006 3communicate with (that is, communicating with above-mentioned 6th equipment 1012).Above-mentioned 6th equipment 1012 can also with its TM of above-mentioned information updating.It should be noted that above, each equipment in the neighborhood of above-mentioned 3rd equipment 1006 when the beacon block end of above-mentioned 3rd equipment 1006, can judge that above-mentioned 3rd equipment 1006 can use which sector of above-mentioned 3rd equipment 1006 to communicate with oneself.
In various embodiments, when in the device discovery time slot distributed by above-mentioned PNC (such as above-mentioned 3rd equipment 1006) of above-mentioned 6th equipment 1012 at oneself, transmitting apparatus finds data block, above-mentioned 3rd equipment 1006 can know above-mentioned 6th equipment 1012 in a similar fashion by inference can use the first sector 1012 1come communicate with above-mentioned 3rd equipment 1006 and upgrade the TM of above-mentioned 3rd equipment 1006.By said process, above-mentioned 3rd equipment 1006 and above-mentioned 6th equipment 1012 can set up their respective directions.When all devices receives topological IE from above-mentioned 3rd equipment 1006 and above-mentioned 6th equipment 102, all devices can upgrade their TM.Therefore by using the beacon block of above-mentioned PNC and device discovery time slot and by its topological IE of each device transmission, equipment can obtain the neighborhood direction relevant with all devices in the neighborhood of the said equipment comprising above-mentioned PNC.
In various embodiments, can provide to use in IEEE 802.15.3 standard reserve command type, two kinds of command frames being called " device discovery request " frame and " device discovery response " frame.The use of these frames can with mentioned above similar.The above-mentioned omnidirectional frame 1924 that above-mentioned first equipment 1002 transmits in its device discovery time slot can be device discovery claim frame.The said equipment finds that claim frame and the said equipment find that the payload of response frame can comprise topological IE.
In various embodiments, PNC can distribute CTA, to carry out paired device discovery to a pair equipment.In the case, the said equipment of transmitting between above-mentioned a pair equipment find data block can with that similar (such as there are those frames described in Figure 14) provided above.Above topology IE can wish used by each equipment in above-mentioned a pair equipment, with the information found to other node transmission, so that other node can upgrade their TM.
In various embodiments, above topology IE omni-directionally can be broadcasted by one or more equipment (such as by each equipment) during CAP.
In various embodiments, each device discovery time slot can be considered as CTA (such as, a pair equipment for specifying in IEEE802.15.3 standard), but herein, an only device address relevant to above-mentioned CTA (such as miscellaneous equipment address is considered as reserving).
In various embodiments, the method for spacial multiplex during can providing CTAP and equipment, will be described below.
When above-mentioned PNC distributes CTA by above-mentioned omnidirectional range to equipment (such as above-mentioned PNC sends each superframe), its TM that can keep according to it implements.Such as, Tu10Zhong, above-mentioned PNC can to the first equipment 1002-the 7th equipment 1014 equipment to the second equipment 1004-the 4th equipment 1008 equipment to the CTA provided across the time period that partly overlaps.Therefore, suppose that above-mentioned PNC keeps up-to-date TM (such as when receiving topological IE) for each superframe, above-mentioned PNC can after the TM of inquiry oneself, to adopting the equipment of spatial reuse to distribution CTA.
In various embodiments, the spatial reuse strategy during can CAP being provided, such as similar to detailed content mentioned above spatial reuse strategy.
In various embodiments, the method for spacial multiplex based on common apparatus discovery strategy and equipment can be provided, will be described below.
In various embodiments, spatial reuse strategy can be based upon on common apparatus discovery strategy.
Exemplarily, any device discovery scheme with IEEE 802.15.3b MAC backward compatibility can be considered.Above, can suppose can allow the direction of each adjacent equipment about the said equipment of device discovery the said equipment by minimally with the equipment scheme of IEEE 802.15.3b MAC backward compatibility.In various embodiments, comprise above-mentioned PNC regardless of above-mentioned network and find at interior all devices the superframe quantity (although the direction of the neighborhood of equipment may be only known for the said equipment this locality) that the direction of their adjacent equipment is separately used, each equipment can send the topological IE according to each embodiment or the topology order/control frame according to each embodiment.
Figure 20 illustrates the payload format 2000 of the topology order/control frame according to each embodiment.In the payload format 2000 of the above-mentioned order/control frame of the topology according to each embodiment, eight bit byte in the payload of the above topology order/control frame shown in Figure 20 is introduced in detail and with similar for introducing of providing of similar field above, therefore can be used identical Reference numeral and can omit identical description.
In various embodiments, the above topology information bitmap field 918 in Figure 20 can be the least significant bit of above-mentioned payload.In Figure 20, the order of field can change.And the order according to the field in any data of each embodiment can change.
In various embodiments, above-mentioned PNC can send above-mentioned IE or order/control frame in its omnidirectional range or CAP, and each in miscellaneous equipment can use CAP omni-directionally to send (such as broadcast) above-mentioned IE or order/control frame.In various embodiments, above-mentioned PNC can be made to be that the equipment for omni-direction transmissions mentioned above distributes CTA.In various embodiments, each equipment (even above-mentioned PNC) can keep TM and can upgrade the TM of the said equipment according to the above topology IE of the said equipment reception or topology order/control frame.
In various embodiments, no matter use which kind of device discovery strategy, all adjacent equipment relative direction about the said equipment of each equipment by using topological IE or topology order/control frame can keep relative direction and the said equipment learning that all adjacent equipment is right.By such scheme, the said equipment can use the above-mentioned spatial reuse strategy according to each embodiment.
Figure 21 shows and represents according to each spatial reuse strategy of embodiment and Figure 21 00 of device discovery strategy.
As shown in Figure 21 00, above-mentioned Figure 21 00 shows coexisting according to the spatial reuse strategy of each embodiment and device discovery strategy and miscellaneous equipment discovery strategy, according to the said equipment discovery strategy (being represented by Reference numeral 2104) of each embodiment can with backward compatibility in IEEE 802.15.3bMAC's and any miscellaneous equipment discovery strategy (2106 or 2108) on IEEE 802.15.3b MAC (2102) coexist.And, as shown in figure 21, according to the above-mentioned spatial reuse strategy (this spatial reuse strategy is represented by Reference numeral 2110) that the said equipment discovery strategy of each embodiment and IEEE 802.15.3b MAC can add according to each embodiment, or can backward compatibility can add on any miscellaneous equipment discovery strategy (such as by Reference numeral 2106 and 2108 represent) of IEEE 802.15.3MAC and IEEE 802.15.3b MAC according to the above-mentioned spatial reuse strategy of each embodiment (for backward compatibility in IEEE 802.15.3MAC, such as add according to each embodiment, such as topology information element and/or order/control frame and/or TM simple and low complex degree ground backward compatibility are added, as represented by Reference numeral 2112, for backward compatibility in IEEE 802.15.3b MAC, this spatial reuse strategy is represented by Reference numeral 2114).
In various embodiments, the method for spacial multiplex based on the network of IEEE 802.11MAC and equipment can be provided for, will be described below.
According to each embodiment, the spatial reuse strategy meeting IEEE 802.11MAC agreement using oriented transmission and reception can be provided.Its transmission range (achievable region of omni-direction transmissions) can be divided into S by each node (such as equipment or travelling carriage (STA)) " n " nindividual logic sector.Each node " n " can also use fixed integer (1,2,3 ..., S n) to its logic sector such as continuously (such as clockwise direction or counterclockwise) be numbered.It should be noted that no matter whether node has fan antenna or phased array antenna, each Nodes can keep this logic sector (such as fixing relative to the point in equipment logic sector).In various embodiments, equipment can perform device discovery procedure frequently, with the direction (but not being position in certain embodiments) making them know up-to-date they neighborhood separately.In various embodiments, each node can transmit topology information element.In various embodiments, each node can keep following buffer memory: topological matrix (TM) and directed networks allocation vector (DNAV).
In various embodiments, the new information element being called topology information element or topological IE illustrated above can be provided.
Figure 22 shows the topology information element format 2200 according to embodiment.Several of above topology information element format 2200 do not have difference with the every of topology information element format 900 shown in Fig. 9, therefore can represent with identical Reference numeral, and can omit identical description.Device address 2208,2216 each (respectively with the said equipment address 920,924 similar) can have the length of 6 eight bit bytes, as shown in field 2206,2214.In above topology information element format 2200, the total length of information can provide in length field 2204.Above-mentioned length field can have the length of 1 eight bit byte, as shown in field 2202.Such as, the information element length with N number of device address can have the length of 1+K+6N eight bit byte (such as, 1 eight bit byte is used for number of sectors field 1808, K eight bit byte is used for topology information bitmap field 918,6 eight bit bytes and is used for each device address 2208,2216).
In Figure 22, device address field 2208,2212,2216 can be the device address of the adjacent equipment of the said equipment.Topology information bitmap field 918 can comprise N (=K) the individual eight bit byte of 8 bit elements, with presentation logic sector service condition, above-mentioned logic sector can be the logic sector of this adjacent equipment that adjacent equipment is used for communicating with the said equipment, and wherein N can be the adjacent equipment sum of the said equipment.Each element " n " of numbering from 1 to N can correspond to adjacent equipment " n ", and can represent the logic sector that above-mentioned adjacent equipment " n " is used for communicating with the said equipment.6 (or other predetermined number any) least significant bits of element " n " can represent that above-mentioned adjacent equipment " n " is used for the numbering of the logic sector communicated with the said equipment, and the numbering of above-mentioned logic sector can be that 0 (or 1) is to the arbitrary value in 63 (or 64).The highest significant position of element " n " can represent, whether the logic sector of large 1 (mould 64) of that numerical value represented than above-mentioned 6 least significant bits of above-mentioned element " n " also can be used for communicating with the said equipment by above-mentioned adjacent equipment " n " (if above-mentioned highest significant position is set to 1).The secondary highest significant position of element " n " can represent whether the logic sector of that numerical value little by 1 (mould 64 ,-1 is equivalent to 63) represented than above-mentioned 6 least significant bits by above-mentioned element " n " also can be used for communicating with the said equipment by above-mentioned adjacent equipment " n " (if above-mentioned highest significant position is set to 1).Nearly three sectors it should be noted that adjacent equipment " n " so can be used to communicate with the said equipment.Element " 1 " can be minimum effective 8 bits of above topology information bitmap field.
In various embodiments, the sector being used in adjacent equipment communicating with the said equipment can be found by the said equipment usually in device discovery procedure mentioned above.After gathering information from device discovery procedure, the said equipment can by above-mentioned information coding in above topology IE.
In various embodiments, the sector maximum quantity of equipment can be 64.It is not carry out any restriction to the number of beams that equipment can have or control.In various embodiments, if equipment has several adjacent equipment, so multiple topological IE can be put in the device address of these adjacent equipment by it.In addition, if equipment not with above topology information bitmap field in about the enough information of that element of above-mentioned adjacent equipment, if or equipment 2 × aMaxDiscoveryLatency in the past (proposes parameter aMaxDiscoveryLatency, it can value 64 or 128) TU (chronomere) in also do not set up the direction (device discovery information) of (hereafter will be described) and above-mentioned adjacent device-dependent, so the said equipment does not comprise the device address of above-mentioned adjacent equipment in its topological IE.
In various embodiments, equipment dynamically can change its logical sector number had, but the chronomere (such as 32 × aMaxDiscoveryLatencyTU) being such as no more than every predetermined number once.In various embodiments, the sector maximum quantity of equipment can be 63 (instead of 64, wherein sector sum can delivery 63 instead of mould 64), and if all 6 least significant bits of the element in above topology information bitmap field are 1, so the said equipment can know the enough information of not adjacent device-dependent corresponding to it by inference.In various embodiments, the sector maximum quantity of equipment can be 16 or 24.
In various embodiments, each equipment (STA, even put telegon (PC) or hybrid coordinator (HC)) can produce unique 16 bit address " destination address (Dev.Addr.) " according to such as ECMA standard.The topological IE of device transmission can have the added field being called " transmission objectives address (Transmitting Dev.Addr.) " field, and above-mentioned added field can be above-mentioned transmission equipment (equipment of transmission above topology IE) above-mentioned unique 16 bit address for oneself producing.In the case, if use unique 16 bit address of above-mentioned generation, each device address field in so topological IE can have the length of 2 eight bit bytes instead of the length of 6 eight bit bytes.If equipment receives the topological IE with two or more device address fields, and these fields have the above-mentioned Transmitting Dev.Addr. field in the topological IE that identical value or use receive, and so can find the conflict between 16 Dev.Addr..If its Dev.Addr. of device discovery conflicts, so it can produce and be suitable for new Dev.Addr. (will be described in detail it) below from the end of transmission of its next device discovery data block.
In various embodiments, the buffer memory described above can be provided.
In various embodiments, the method and apparatus of spatial reuse strategy can be provided for, will be described below.
Contrast Figure 10, can suppose that the equipment in Figure 10 forms IEEE 802.11 network by any one in the following two schemes of use:
-point coordination function (PCF) or Hybrid Coordination Function (HCF), above-mentioned 3rd equipment 1006 is respectively as a telegon (PC) or hybrid coordinator (HC); Or
-enhanced distributed channel access (EDCA).
As will be described below, method and apparatus below can be provided in various embodiments, by said method and equipment, the node shown in Figure 10 can adopt spatial reuse in competition period (CP), uncontested period (CFP) and period in access control stage (CAP).During CP, node comprises EDCA or HCF control channel access (HCCA).In various embodiments, above-mentioned PC or HC (such as above-mentioned 3rd equipment 1006) can keep TM.Other node also can keep their TM.In various embodiments, each equipment (even PC or HC) one group of DNAV that the number of sectors that has with it can be kept suitable.
In various embodiments, can add or revise the frame type and frame subtype that provide in IEEE 802.11 standard, will be described below.
In various embodiments, " CF poll response (CF-Poll-Response) " frame can be added.If above-mentioned PC only comprises PCF and is not the HC at inner round Realization HCF, so this CF poll response frame may be desirable.
In various embodiments, " device discovery request (Device Discovery Request) " frame can be added.
In various embodiments, " device discovery response (Device-Discovery-Res ponse) " frame can be added.
Figure 23 shows CF (uncontested) the poll response frame 2300 according to embodiment.
In various embodiments, the frame format of above-mentioned CF poll response frame 2300 can comprise: frame control field 2304, duration field 2308, receiving equipment address (RA) field 2312, transmission equipment address (TA) field 2316 and Frame Check Sequence (FCS) field 2320.Above-mentioned frame control field 2304 can have the length of 2 eight bit bytes, as shown in field 2302.Above-mentioned duration field 2308 can have the length of 2 eight bit bytes, as shown in field 2306.Above-mentioned RA field 2312 can have the length of 6 eight bit bytes, as shown in field 2310.Above-mentioned TA field 2316 can have the length of 6 eight bit bytes, as shown in field 2314.Above-mentioned FCS field 2320 can have the length of 4 eight bit bytes, as shown in field 2318.
In various embodiments, the RA field 2312 of above-mentioned CF poll response frame 2300 can be expect the address of the equipment STA directly receiving this frame 2300.Above-mentioned TA field 2316 can be the address of the STA transmitting above-mentioned CF poll response frame 2300.Above-mentioned duration field 2308 can be the time of the Microsecond grade needed for frame (fragment) or the residual time length of transmission opportunity (TXOP) (such as being limited by maximum (such as aTXOPLimit)) that transmission is about to generation.The above-mentioned frame control field 2304 of above-mentioned CF poll response frame 2300 can as provided in IEEE 802.11 standard (such as, the frame type of this frame can be " 01 ", and frame subtype can be " 0111 ").
In various embodiments, above-mentioned CF poll response frame can be the Frame with the form provided for Frame in IEEE 802.11 standard.But duration value can be arranged to transmit the time being about to the Microsecond grade needed for frame (fragment) produced after above-mentioned CF poll response frame.
Figure 24 illustrates the device discovery claim frame 2400 according to embodiment.
Find in the frame format of claim frame 2400 at the said equipment, the frame control field 2404 with 2 length in octets (being represented by field 2402) can be provided, there is the duration field 2408 of 2 length in octets (being represented by field 2406), there is destination address (DA) field 2412 of 6 length in octets (being represented by field 2410), there is source address (SA) field 2416 of 6 length in octets (being represented by field 2414), there is BSS (Basic Service Set) ID (identifier) field 2420 of 6 length in octets (being represented by field 2418), the sequence with 2 length in octets (being represented by field 2422) controls (sequence control) field 2424, there is N number of length in octets (represented by field 2426, wherein N can be natural number) frame (frame body) field 2428 and there is the FCS field 2432 of 2 length in octets (being represented by field 2430).
In various embodiments, the said equipment finds that the above-mentioned da field 2412 of claim frame 2400 can be the address of the expectation object equipment STA of this frame.Above-mentioned sa field 2416 can be the address that transmission the said equipment finds the STA of claim frame 2400.Above-mentioned duration field 2408 can be the time (such as hereafter by explanation) that transmission the said equipment finds to be about in data block the Microsecond grade needed for frame (fragment) produced.The said equipment finds that the above-mentioned frame control field 2404 of claim frame 2400 can as provided in IEEE 802.11 standard (such as, the frame type of above-mentioned frame can be " 00 ", and frame subtype can be " 0110 ").
Figure 25 shows the device discovery response frame 2500 according to embodiment.
Find in the frame format of response frame 2500 at the said equipment, the frame control field 2504 with 2 length in octets (being represented by field 2502) can be provided, there is the duration field 2508 of 2 length in octets (being represented by field 2506), there is destination address (DA) field 2512 of 6 length in octets (being represented by field 2510), there is source address (SA) field 2516 of 6 length in octets (being represented by field 2514), there is the BSS id field 2520 of 6 length in octets (being represented by field 2518), there is the Sequence Control field 2524 of 2 length in octets (being represented by field 2522), there is N number of length in octets (represented by field 2526, wherein N can be natural number) frame body field 2528 and there is the FCS field 2532 of 2 length in octets (being represented by field 2530).
In various embodiments, the said equipment finds that the above-mentioned da field 2512 of response frame 2500 can be the address of the expectation object equipment STA of this frame.Above-mentioned sa field 2516 can be the address that transmission the said equipment finds the STA of response frame 2500.Above-mentioned duration field 2508 can be the time that transmission the said equipment finds to be about in data block the Microsecond grade needed for frame (fragment) produced.The said equipment finds that the above-mentioned frame control field 2504 of response frame 2500 can as provided in IEEE 802.11 standard (such as the said equipment finds that the frame type of response frame 2500 can be " 00 ", and frame subtype can be " 0111 ").
In various embodiments, the said equipment finds that claim frame 2400 and the said equipment find that the frame of at least one in response frame 2500 can comprise the topology information element with form mentioned above.
In various embodiments, the said equipment find claim frame and/or device discovery response frame can be use according to IEEE 802.11 standard the control frame of reserved subtype.In the case, DA can be replaced by RA, and SA can be replaced by TA.In various embodiments, BSS ID can also be optional.In the case, above-mentioned duration field can be still the time that transmission the said equipment finds to be about in data block the Microsecond grade needed for frame (fragment) produced.
In various embodiments, the method for spacial multiplex and equipment with CP can be provided, will be described below.
In various embodiments, equipment can use logic sector to communicate, as long as DNAV corresponding to above-mentioned logic sector is 0 and media in above-mentioned logic sector are in idle condition (if meet these conditions, so thinking that above-mentioned media can be with).
In various embodiments, in order to CP, equipment can think that the media in the logic sector meeting following arbitrary condition are in busy condition:
-when the media that clear channel assessment (CCA) (CCA) mechanism of the said equipment represents in this logic sector be in busy condition (although media may be a direction can or in other logic sector, be in idle condition) time;
-when the DNAV of this logic sector of the said equipment is greater than 0;
-when the said equipment just using this logic sector to transmit in the media or received frame time;
-when the duration notified in the frame at previous transmissions does not also expire, the frame of above-mentioned previous transmissions be the logic sector transmission of the adjacent equipment of (using TM the to know by inference) the said equipment can related to from this logic sector of the said equipment or logic sector to above-mentioned adjacent equipment transmit.
In various embodiments, all, equipment can think that the media in logic sector are in idle condition At All Other Times.If media are in idle condition for each logic sector of the said equipment, so the said equipment can think that media are omni-directionally in idle condition.Even if the media in a logic sector of the said equipment are in busy condition, the said equipment also can think that media are in busy condition for omni-direction transmissions.
In various embodiments, for carrying out omni-direction transmissions, equipment can keep backoff counter.Above-mentioned backoff counter can be successively decreased to be similar to mode given in IEEE 802.11 specification.Can be given the same with IEEE 802.11 specification about calling above-mentioned backoff counter and the rule making above-mentioned backoff counter successively decrease.Except above-mentioned backoff counter, according to each embodiment, equipment can keep independently backoff counter for each logic sector.The media DIFS in the past of the above-mentioned backoff counter for logic sector only in corresponding logic sector (its DNAV is 0) (DCF (distributed coordination function) interFrameGap) or the longer time is in idle condition time, just can start to reduce its value.Except media being limited to the media in above-mentioned logic sector, can be similar with those rules (backoff counter for relevant with omni-direction transmissions purposes) given in IEEE802.11 specification with the rule making it successively decrease about calling the above-mentioned backoff counter for logic sector.Equipment may wish in its each logic sector, can perform CCA independently.Equipment can also call the backoff counter for media in any logic sector independently.
In various embodiments, when equipment has the data cached bag of CP to be utilized transmission, first the said equipment can check from its TM that it can intend to use which logic sector to send the data of oriented transmission.Such as, by using condition given above (for checking media idle condition), so, the said equipment can be understood, whether its media be intended for use in that (those) logic sector of oriented transfer of data above-mentioned are in idle condition (hereafter will illustrate in greater detail).If the media in above-mentioned logic sector (or those logic sectors above-mentioned) are in busy condition, so the said equipment can also call and be intended for use backoff counter (obeying rule mentioned above) corresponding to the logic sector of oriented transfer of data with above-mentioned its.For carrying out omni-direction transmissions, the said equipment can also call another independently backoff counter simultaneously.
In various embodiments, if meet following condition, so equipment can think the transmission opportunity (TXOP) oneself obtained in logic sector:
-the said equipment has one or more newly arrived frame or the new frame produced;
-the said equipment has the backoff counter corresponding with that logic sector with 0 value and do not have frame before new frame arrives or produces; And
-the said equipment judges media in that logic sector above-mentioned idle and available time reaching DIFS/AIFS or longer.
In various embodiments, once meet above-mentioned condition (such as obeying the rule illustrating or will illustrate above below), the said equipment just can to start in that logic sector directionally transmission frame, and this frame can be RTS frame.If meet following condition, so the said equipment also can be thought and oneself obtained the TXOP in logic sector:
-the said equipment buffer memory one or more frames of (comprising re-transmission) to be transmitted; And
Its backoff counter corresponding with that logic sector is reduced to 0 from 1 by-the said equipment, and when the media in that logic sector keep idle and available state from that time always, the said equipment is transmission frame in that logic sector not.
In various embodiments, unless the said equipment has obtained TXOP (such as obey above with rule described below) in a logic sector, otherwise it does not initiate transmission in any logic sector.
In various embodiments, the similar rule illustrated above can be applied to relevant omnidirectional TXOP and the TXOP for AC.Before sending any RTS packet, the said equipment can judge whether it has obtained the TXOP in the logic sector of the oriented data of its plan transmission.If the said equipment has obtained the TXOP for omni-direction transmissions, so the said equipment omni-directionally can send above-mentioned RTS packet (if sending RTS).In various embodiments, about the transmission of RTS, if the said equipment determines to send RTS, so only have when the said equipment not can be used for the media of omni-direction transmissions, the said equipment just can send oriented RTS.If the said equipment is only wanted to send in the logic sector of oriented data at it obtain TXOP (media in other logic sector are in busy condition), so the said equipment can be wanted to send in the logic sector of oriented data at above-mentioned its and directionally sends RTS packet (such as below by illustrate).The upper bound of the duration field in the RTS packet that above-mentioned omnidirectional sends can be default parameter, such as aTXOPLimit.The upper bound of the duration field in the RTS packet of above-mentioned oriented transmission can be the value that minimum value in the non-zero DNAV of the logic sector of the said equipment deducts RTS frame transmission time gained.Equipment at any time can be selected not send oriented RTS.
In various embodiments, about the oriented RTS frame of transmission or oriented CTS frame, when the said equipment is wanted transmission at it or is received transmission frame in the logic sector of data, the said equipment can have null value at DNAV and in each logic sector of the media idle time longer than DIFS, send above-mentioned frame simultaneously.This can by using fan antenna or easily realizing by using the beam forming of phased array antenna.
In various embodiments, if the DNAV of any one is null value and above-mentioned DNAV does not reach time of DIFS at media free time in other logic sector of null value in other logic sector, equipment does not transmit oriented RTS frame (or initial frame of TXOP beginning) in logic sector.
In various embodiments, can expand to rule described below the situation that there is AC above.
In various embodiments, when equipment receives RTS packet (when such as mating the device address of the said equipment when the device address in RTS packet), first the said equipment can check from its TM that it can use its which logic sector to receive the data of oriented transmission from the transmitting apparatus of above-mentioned RTS packet.By using above-mentioned condition (such as checking media idle condition), the said equipment can also understand that above-mentioned its wants the media in the logic sector for receiving whether to be in idle condition.If the media in the whole logic sector of the said equipment are all in idle condition and available, so the said equipment omni-directionally can send the CTS packet with duration field below, and this duration field deducts the CTS frame transmission time by the duration field of received RTS and deducts SIFS (short interFrameGap) again and obtain.If media are not all be in idle condition in whole logic sectors of the said equipment, but only want to receive at the said equipment in the logic sector of oriented data and be in idle condition and available, so the said equipment can be wanted to receive in the logic sector of oriented data at above-mentioned its and directionally sends above-mentioned CTS packet.In the CTS packet of the oriented transmission of the said equipment, the upper bound of the duration field in above-mentioned CTS packet can be the minimum value in fol-lowing values:
Minimum value in the non-zero DNAV of the logic sector of-the said equipment deducts the value of CTS frame transmission time gained; And
-the duration field (omnidirectional CTS's) that uses step mentioned above to know by inference from the RTS packet that the said equipment receives.
In various embodiments, above-mentioned CTS frame can have the frame head (form of the CTS frame that such as can to IEEE 802.11 specification in provide add TA field) the same with above-mentioned RTS frame.Alternatively, to use in IEEE 802.11 specification another control frame of subtype of reserving can use together with above-mentioned feature (in above-mentioned CTS frame head, not only comprising TA field but also comprise RA field, to serve the function of CTS frame).In various embodiments, term " CTS " can be used for this control frame (it can comprise RA and the TA) name according to each embodiment.
In various embodiments, if the duration field obtained in the RTS packet received by the said equipment (the omnidirectional CTS for by using the step described to know by inference the above) minimum value exceeded in the non-zero DNAV of the logic sector of the said equipment deducts the value of CTS frame transmission time gained, so in response to received RTS packet, the said equipment can not send CTS packet.If directionally send CTS packet, so duration may wish that the minimum non-zero DNAV of the logic sector being less than or equal to the said equipment deducts the value of CTS frame transmission time gained.
In various embodiments, if it is not issue the said equipment and be not the CTS frame head (comprising RA and TA) issuing broadcast address that equipment receives, so for each logic sector of related logic sector of transmitting apparatus can relating to above-mentioned CTS frame, the said equipment can by the DNAV using the duration field that receive to upgrade this logic sector.
In various embodiments, if equipment has the logic sector (being numbered S) having non-zero DNAV, so the said equipment do not send in the logic sector of relative on diameter and physical dimension with above-mentioned logic sector S (opposite) CTS frame (such as in order to relative above-mentioned logic sector in above-mentioned logic sector S physical dimension in receive data).In various embodiments, no matter when oriented transmission RTS, it can be sent with the power (such as being controlled by power) reduced.Similarly, if directionally send CTS frame, so it can be sent with the transmitting power (such as being controlled by power) reduced.In various embodiments, the control frame of all oriented transmission can pass through power control transmission, to compensate oriented transmitter antenna gain (dBi).
Such as, contrast Figure 10, if above-mentioned first equipment 1002 sends omnidirectional RTS to above-mentioned 3rd equipment 1006, so when all adjacent equipment of above-mentioned first equipment 1002 receives above-mentioned RTS, it may be above-mentioned 3rd equipment 1006 that its all adjacent equipment can know scheduled target equipment by inference from received RTS frame.The each adjacent equipment of above-mentioned first equipment 1002 is knowing above-mentioned first its first logic sector 1002 of equipment 1002 plan use by inference 1carry out the 4th logic sector 1006 with above-mentioned 3rd equipment 1006 4after communication, the DNAV of above-mentioned adjacent equipment is set after the TM searching above-mentioned adjacent equipment.When the first logic sector 1014 of above-mentioned 7th equipment 1014 1can from the 4th logic sector 1006 of above-mentioned 3rd equipment 1006 4when relating to, above-mentioned 7th equipment 1014 may be wanted to arrange its first logic sector 1014 1dNAV.Above-mentioned 6th equipment 1012 can use the duration field in received RTS packet to arrange the second logic sector 1012 of above-mentioned 6th equipment 1012 2dNAV, above-mentioned 4th equipment 1008 can arrange its 3rd logic sector 1008 3dNAV, above-mentioned second equipment 1004 can arrange its 3rd logic sector 1004 3dNAV.When above-mentioned 3rd equipment 1006 receives RTS packet from above-mentioned first equipment 1002, above-mentioned 3rd equipment 1006 can be known it by inference and can be intended to use its 4th logic sector 1006 from its TM 4receive packet from above-mentioned first equipment 1002, suppose the 4th logic sector 1006 of above-mentioned 3rd equipment 1006 4dNAV be all 0 together with other DNAV all of above-mentioned 3rd equipment 1006, so above-mentioned 3rd equipment 1006 can be had the CTS packet of duration determined by rule given above and make answer.Above-mentioned 3rd equipment 1006 can also send omnidirectional CTS (supposing that the DNAV of all logic sectors of above-mentioned 3rd equipment 1006 has been 0 (just before CTS transmission)).When receiving CTS from above-mentioned 3rd equipment 1006, each in above-mentioned 5th equipment 1010, above-mentioned 7th equipment 1014, above-mentioned 6th equipment 1012, above-mentioned 4th equipment 1008 and above-mentioned second equipment 1004 is expected by using the TM of oneself to upgrade its DNAV.If now when above-mentioned first equipment 1002 communicates with above-mentioned 3rd equipment 1006, above-mentioned second equipment 1004 is wanted to send RTS packet to above-mentioned 4th equipment 1008, and so above-mentioned second equipment 1004 can know its 3rd logic sector 1004 by inference 3dNAV may be nonzero value.Therefore, if above-mentioned second equipment 1004 is selected to send RTS, so it can use its second logic sector 1004 2(and its first logic sector 1004 1with the 4th logic sector 1004 4if the media in these logic sectors are in idle condition and DNAV is 0) directionally send RTS to above-mentioned 4th equipment 1008.Because above-mentioned 4th equipment 1008 has for its 3rd logic sector 1008 3non-zero DNAV (reason due to the link of the first equipment 1002-the 3rd equipment 1006), so above-mentioned 4th equipment 1008 can use its first logic sector 1008 1with its second logic sector 1008 2(with its 4th logic sector 1008 4if the media in these logic sectors are in idle condition and DNAV is 0) directionally send CTS packet to above-mentioned second equipment 1004, the such as duration field of this CTS packet is arranged to the 3rd logic sector 1008 being less than or equal to above-mentioned 4th equipment 1008 3dNAV deduct the value of CTS frame transmission time gained.
In various embodiments, if equipment receives the RTS frame or CTS frame or CF poll response frame or initial frame (such as when the receiving equipment of RTS or CTS is another equipment) that make a reservation for issue another equipment (it is not the adjacent equipment of the said equipment), so the said equipment can upgrade in the said equipment that those can relate to the DNAV of the logic sector of the transmitting apparatus of above-mentioned RTS frame or CTS frame or CF poll response frame or initial frame, and consider the duration value comprised at received above-mentioned frame, upgrade towards the transmitting apparatus of above-mentioned frame in the said equipment, the DNAV of other sector in the said equipment transmission achievable region half.
In various embodiments, the method for spacial multiplex and equipment that use CFP can be provided, will illustrate in greater detail it below.
In various embodiments, the method for spacial multiplex and equipment that use PCF can be provided, will illustrate in greater detail it below.
In various embodiments, when above-mentioned PC is to any device transmission CF poll (CF-Poll) frame (or having the Frame of subtype " 0010 ", " 0011 " or " 0111 "), the said equipment is after the above-mentioned CF poll frame of reception, this chance can be utilized to come omnidirectional and send empty (Null) frame or CF poll response frame, or device discovery claim frame or Frame (subtype allowed) or CF confirm (CF-ACK) frame SIFS.Only when the said equipment transmission CF poll response frame, miscellaneous equipment just after the said equipment transmits the transmission time of present frame (CF poll response frame), can utilize media (such as being illustrated by contrast Figure 26) below by usage space multiplex strategy together with the said equipment simultaneously.In various embodiments, equipment can allow transmission frame sequence/fragment sequence during CFP (such as to embed the sequence of SIF; Such as, sequence in section burst (fragment burst); Such as, sequence in IEEE 802.11 specification).But, can in the cfp before delivery section burst at equipment, first the said equipment can send CF poll response frame in response to received CF poll frame.Duration field in above-mentioned CF poll response frame can comprise duration below, and this duration can cover the burst of whole frame, confirms until receive last.Above-mentioned CF poll response frame can issue the equipment by receiving the later frame/fragment of above-mentioned CF poll response frame.
Figure 26 shows and represents according to the frame transaction graph 2600 in the uncontested period (CFP) of embodiment.In the Figure 26 00 of the CFP for equipment shown in Figure 10, each data in CFP 2656 illustrate above time shaft 2602.Above-mentioned PC or the HC beacon 2658 of (such as above-mentioned 3rd equipment 1006) can be provided.And, such as after this, the CF poll frame 2604 that PC (such as above-mentioned 3rd equipment 1006) can be provided to issue above-mentioned first equipment 1002 or HC (such as above-mentioned 3rd equipment 1006) issue QoS (service quality) the CF poll frame 2604 of above-mentioned first equipment 1002.And, such as after this, SIFS 2606 can be provided.And, the CF poll response frame 2608 (when such as only having use PCF) of above-mentioned first equipment 1002 can be provided.And, can carry out from above-mentioned second equipment 1004 to the frame of above-mentioned 4th equipment 1008 transmission 2612 (below by see) in another frame to equipment transmission period simultaneously.The frame between above-mentioned first equipment 1002 and above-mentioned 7th equipment 1014 can be provided together with frame 2608 to transmit 2610, as shown in arrow 2616.And, such as after this, above-mentioned PC or the HC discovery data block 2614 of (such as above-mentioned 3rd equipment 1006) can be provided.
From above-mentioned first equipment 1002 in the more detailed icon 2616 of the frame transmission/fragments for transport of above-mentioned 7th equipment 1014, the such as oriented frame 2622 (it can be Frame) of omnidirectional's frame 2618, first interFrameGap 2620, first, the oriented frame 2626 (it can comprise the first confirmation (ACK)) of the second interFrameGap 2624, second, the 3rd interFrameGap 2628, the 3rd oriented frame 2630 (it can be Frame), the 4th interFrameGap 2632 and the 4th oriented frame 2634 (it can comprise the 2nd ACK) can be provided.
In the more detailed icon 2636 of the above-mentioned discovery data block 2614 of above-mentioned PC or HC (such as above-mentioned 3rd equipment 1006), the above-mentioned discovery data block 2614 of above-mentioned PC or HC can comprise the oriented frame 2646 of omnidirectional's frame 2638, first interFrameGap the 2640, first oriented frame 2642, second interFrameGap 2644, second, the 3rd interFrameGap 2648, the 3rd oriented frame 2650, the 4th interFrameGap 2652 and the 4th oriented frame 2654.Above-mentioned first oriented frame 2642 can only transmit in first sector of above-mentioned PC or HC.Above-mentioned second oriented frame 2646 can only transmit in second sector of above-mentioned PC or HC.Above-mentioned 3rd oriented frame 2650 can only transmit in the 3rd sector of above-mentioned PC or HC.Above-mentioned 4th oriented frame 2654 can only transmit in the 4th sector of above-mentioned PC or HC.
Exemplarily, after receiving above-mentioned omnidirectional frame 2618 from above-mentioned first equipment 1002, above-mentioned second equipment 1004 can initiate frame affairs to above-mentioned 4th equipment 1008 after itself TM and DNAV of inquiry.But above-mentioned second equipment 1004 can ensure, before the duration recorded in the CF poll response frame from above-mentioned first equipment 1002 disappears, its frame affairs initiated to above-mentioned 4th equipment 1008 can terminate.Above-mentioned second equipment 1004 can send RTS frame as first in its frame affairs, and above-mentioned 4th equipment 1008 can with CTS frame (such as obeying above-mentioned rule) answer.Such scheme can allow miscellaneous equipment also to use these media to by usage space multiplex strategy.In addition, unless above-mentioned second equipment 1004 time of presetting in the past, (such as 2 × aMaxDiscoveryLatency (such as had the twice of the parameter of any value, as 64) chronomere (TU)) at least one times with above-mentioned first equipment 1002, each in above-mentioned 7th equipment 1014 and above-mentioned 4th equipment 1008 sets up direction (such as by device discovery mentioned above and described below) information, and unless the TM of above-mentioned second equipment 1004 at least upgrades once about in the 2 × aMaxDiscoveryLatency TU in the past of the link between above-mentioned first equipment 1002 and above-mentioned 7th equipment 1014, otherwise above-mentioned second equipment 1004 does not use above-mentioned rule to initiate any frame affairs within the frame transmission time of above-mentioned first equipment 1002 to above-mentioned 7th equipment 1014.
In various embodiments, the method for spacial multiplex and equipment that use HCF can be provided, will be described below.
In various embodiments, when above-mentioned HC is to any device transmission QoS CF poll frame 2604 (or having the Frame of subtype " 1010 ", " 1011 " or " 1111 "), the said equipment can receive the SIFS after above-mentioned QoS CF poll frame, utilizes this chance (TXOP) to send the empty frame of QoS or device discovery claim frame or Frame (subtype allowed).
Exemplarily, contrast Figure 26, Figure 26 can illustrate the CFP for equipment shown in Figure 10, if the first equipment 1002 receives QoS CF poll frame from above-mentioned HC, so above-mentioned first equipment may not intend in its TXOP, omni-directionally transmit any CF poll response frame.After receiving QoS CF poll frame from above-mentioned 3rd equipment 1006, the first equipment 1002 can utilize this TXOP to send RTS frame or initial frame or device discovery claim frame as the first frame.Above-mentioned second equipment 1004 can also initiate frame affairs (if the non-transmitting apparatus of above-mentioned first equipment 1002 finds claim frame) to above-mentioned 4th equipment 1008 after itself TM and DNAV of inquiry.But above-mentioned second equipment 1004 can ensure, its above-mentioned frame affairs initiated to above-mentioned 4th equipment 1008 can terminate before the TXOP duration of RTS frame (or initial frame) defined from above-mentioned first equipment 1002 disappears.In various embodiments, above-mentioned second equipment 1004 can send first frame of RTS frame as its frame affairs, and above-mentioned 4th equipment 1008 can make answer by CTS frame (obeying rule given above).Said process can allow miscellaneous equipment also to use media to by usage space multiplex strategy.In addition, unless (it can be the parameter with any value to above-mentioned second equipment 1,004 2 × aMaxDiscoveryLatency in the past, as 64) in chronomere (TU) with above-mentioned first equipment 1002, each in above-mentioned 7th equipment 1014 and above-mentioned 4th equipment 1008 sets up direction (device discovery) information at least one times, and unless the TM of above-mentioned second equipment 1004 at least upgrades once about in the 2 × aMaxDiscoveryLatency TU in the past of the link between above-mentioned first equipment 1002 and above-mentioned 7th equipment 1014, otherwise above-mentioned second equipment 1004 does not use above-mentioned rule to initiate any frame affairs within the frame transmission time of above-mentioned first equipment 1002 to above-mentioned 7th equipment 1014.
In various embodiments, above-mentioned first equipment 1002 can send QoS CF poll response frame (such as except adding QoS control field, having the form identical with CF poll response frame) in response to received QoS CF poll frame.
In various embodiments, no matter use DCF (distributed coordination function) or HCF (Hybrid Coordination Function), equipment not another in the frame transmission period between equipment (the said equipment receives RTS frame or CTS frame or CF poll response frame from this another to equipment) and adjacent equipment initiate frame affairs (using spatial reuse strategy given above), unless the TM of the said equipment at least upgrades (confirmation) once about above-mentioned another in the 2 × aMaxDiscoveryLatency TU in the past of the link between equipment, and with above-mentioned another, direction (device discovery) information is set up to the equipment of two in equipment (in both each) at least one times in the said equipment 2 × aMaxDiscoveryLatency TU in the past, and be do not change in item in the TM of the relevant the said equipment of all links on summit 4 × aMaxDiscoveryLatency TU in the past the arbitrary equipment in equipment with above-mentioned another.In this, the said equipment must in 2 × aMaxDiscoveryLatency TU in the past from above-mentioned another to the equipment of two in equipment (from above-mentioned another to each equipment in equipment) receive the topological IE comprising device address each other at least one times.In various embodiments, no matter use DCF, PCF or HCF, equipment can another to equipment (the said equipment from above-mentioned another such as RTS frame or CTS frame or CF poll response frame are received to equipment) between the frame transmission period in initiates frame affairs with adjacent equipment, and if if above-mentioned another is not the adjacent equipment of the equipment of adjacent equipment another centering above-mentioned of the said equipment to the equipment of in equipment propose that the logic sector of use cannot be related to from the said equipment (obedience detailed description above).
In various embodiments, if do not receive any discovery data block from another equipment in equipment 4 × aMaxDiscoveryLatency TU in the past, so the said equipment does not think that another equipment above-mentioned is adjacent equipment.
In various embodiments, if equipment has obtained about the information of the optimal logic sector of the said equipment with adjacent devices communicating and the information of the optimal logic sector of above-mentioned adjacent equipment that communicates with the said equipment, so can think that the said equipment has set up direction (device discovery) information with above-mentioned adjacent device-dependent.In this, the said equipment must transmit the topological IE that comprises above-mentioned adjacent device address and must receive topological IE from above-mentioned adjacent equipment, and wherein the address of the said equipment is included in the topological IE of above-mentioned adjacent equipment.
In various embodiments, when equipment is from adjacent equipment received frame, if the signal strength signal intensity received from above-mentioned adjacent equipment in the sector of the said equipment higher than a certain threshold value and/or higher than the sector (direction) of the said equipment any one in the part of maximum signal, so the said equipment can think that above-mentioned sector will be used for and above-mentioned adjacent devices communicating.
In various embodiments, can provide with above for the spatial reuse strategy during CAP like the spatial reuse policy class using the CFP of HCF to describe.
In various embodiments, can provide following agreement, by these agreements, equipment can find the miscellaneous equipment in its transmission range, and can find above-mentioned miscellaneous equipment separately about the direction of the said equipment.
Exemplarily, contrast Figure 10, can suppose that all devices shown in Figure 10 is in transmission range each other.Hereinafter, will illustrate that each equipment shown in Figure 10 can find the method and apparatus of miscellaneous equipment about the direction of above-mentioned each equipment.
In various embodiments, in order to find adjacent equipment, equipment can transmit discovery data block.In above-mentioned discovery data block, first the said equipment can transmit omnidirectional range or control frame or management frames (such as having constant transmissions duration), subsequently the oriented beacon of sequential delivery or control frame or Frame or management frames (such as each beacon or frame have constant transmissions duration and embed interFrameGap) in each sector.The said equipment discovery procedure can include to transmitting step and additional optional steps, will be described below.
In various embodiments, the transmission sequence from the above-mentioned oriented frame of equipment can be default, such as from first sector of the said equipment successively to last sector of the said equipment.
In various embodiments, oriented transmitting step below can be provided: each equipment can find data block by using the contention access of media or transmitting during CFP.But, want to transmit finding that the said equipment of data block may wish to guarantee that media are that omnidirectional can use according to itself TM and DNAV.Above-mentioned steps is shown in Figure 27, will illustrate in greater detail below.In various embodiments, the duration field of the above-mentioned first omnidirectional's frame (such as " device discovery request " frame) transmitted during the above-mentioned discovery data block of equipment can comprise the time needed for above-mentioned discovery transmission of data blocks.Receive arbitrary equipment of above-mentioned omnidirectional frame (such as " device discovery request " frame) from the said equipment sending above-mentioned discovery data block, the DNAV of whole logic sectors of obeying the above-mentioned arbitrary equipment of duration renewal that the regular above-mentioned omnidirectional frame received mentioned above comprises can be used in.
Figure 27 shows the diagram 2700 of the discovery data block according to embodiment.The contention access of media can be used to transmit above-mentioned discovery data block.In diagram 2700, each beacon/control/order data illustrates above time shaft 2702.In first time period, media may be in busy condition, as shown in block 2704.Then, after DIFS 2706, one or more backoff period 2736 can be set, such as the first backoff period 2708, second backoff period 2710, one or more other backoff period 2712 and last backoff period 2714.During above-mentioned DIFS 2706 and above-mentioned backoff period 2736, media may be in idle condition, as shown in arrow 2734.After this, the oriented frame 2724 of omnidirectional's frame 2716, first interFrameGap the 2718, first oriented frame 2720, second interFrameGap 2722, second, the 3rd interFrameGap 2726, the 3rd oriented frame 2728, the 4th interFrameGap 2730, the 4th oriented frame 2732 can be set.With mentioned above similar, above-mentioned oriented frame can only transmit in respective sector.
In Figure 27, above-mentioned frame 2716,2720,2724,2728 and 2732 can be a part for above-mentioned discovery data block.Suppose that above-mentioned 3rd equipment 1006 participates in the transmission of above-mentioned discovery data block, when above-mentioned 6th equipment 1012 shown in Figure 10 is known the prefix of above-mentioned omnidirectional frame 2716 or the end time of postamble from above-mentioned 3rd equipment 1006 and received above-mentioned 3rd oriented frame 2728 from above-mentioned 3rd equipment 1006, above-mentioned 6th equipment 1012 can know that above-mentioned 3rd equipment 1006 can use the 3rd sector 1006 of above-mentioned 3rd equipment 1006 3communicate with its (namely with above-mentioned 6th equipment 1012).Above-mentioned 6th equipment 1012 also can with its TM of above-mentioned information updating.Should note, hereinbefore, each equipment in the neighborhood of above-mentioned 3rd equipment 1006 can judge, when the discovery end of transmission block of above-mentioned 3rd equipment 1006, above-mentioned 3rd equipment 1006 can use which logic sector of above-mentioned 3rd equipment 1006 to communicate with above-mentioned 6th equipment 1012.
Exemplarily, when above-mentioned 6th equipment 1012 sends similar discovery data block, above-mentioned 3rd equipment 1006 can know the first sector 1012 that above-mentioned 6th equipment 1012 may use above-mentioned 6th equipment 1012 in a similar fashion by inference 1come communicate with above-mentioned 3rd equipment 1006 and upgrade the TM of above-mentioned 3rd equipment 1006.By said process, above-mentioned 3rd equipment 1006 and above-mentioned 6th equipment 1012 can set up their respective directions.When miscellaneous equipment receives topological IE from above-mentioned 3rd equipment 1006 and above-mentioned 6th equipment 1012, miscellaneous equipment can upgrade the TM of miscellaneous equipment.Therefore, by its topological IE of each device transmission, equipment can obtain the neighborhood direction about all devices in its neighborhood.
In various embodiments, optional step below can be provided: each equipment can use the contention access of media or CFP and another devices exchange to find data block.But, want the said equipment of initiating above-mentioned discovery data block may wish to guarantee that media are that omnidirectional can use according to itself TM and DNAV.Be described in more detail it by contrast Figure 28 below, wherein, above-mentioned 3rd equipment 1006 shown in Figure 10 can obtain the TXOP initiating with above-mentioned 6th equipment 1012 to find that data block exchanges.
Figure 28 shows the diagram 2800 of the paired discovery data block according to embodiment.Such as, for the paired discovery data block communications (using a pair above-mentioned 3rd equipment 1006 and above-mentioned 6th equipment 1012 in order to illustrate) of the contention access of use media, each data are square on a timeline in Figure 28 to be illustrated.In first time period, media may be in busy condition, as shown in block 2804.Then, after DIFS 2806, one or more backoff period 2836 can be set, such as the first backoff period 2808, second backoff period 2810, one or more other backoff period 2812 and last backoff period 2814.During above-mentioned DIFS 2806 and above-mentioned backoff period 2836, media may be in idle condition, as shown in arrow 2834.After this, the oriented frame 2820 of first omnidirectional's frame 2816, first interFrameGap 2818, second omnidirectional's frame 2838, second interFrameGap 2840, first, the oriented frame 2824 of the 3rd interFrameGap 2822, second, the 4th interFrameGap 2826, the 3rd oriented frame 2828, the 5th interFrameGap 2830, the 4th oriented frame 2832, the 6th interFrameGap 2842, the 5th oriented frame 2844, the 7th interFrameGap 2846, the 6th oriented frame 2848, the 8th interFrameGap 2850, the 7th oriented frame 2852, the 9th interFrameGap 2854 and the 8th oriented frame 2856 can be set.
Such as, the above-mentioned frame 2816,2838,2820,2824,2828,2832,2844,2848,2852 and 2856 in Figure 28 can be a part for above-mentioned discovery data block.In Figure 28, above-mentioned frame 2816 (device discovery claim frame), 2820,2824,2828 and 2832 can be transmitted from above-mentioned 3rd equipment 1006, and above-mentioned frame 2838 (device discovery response frame), 2844,2848,2852 and 2856 can be transmitted from above-mentioned 6th equipment 1012.In various embodiments, the duration field of the omnidirectional's frame transmitted during the above-mentioned discovery data block of equipment can comprise the remaining time needed for above-mentioned discovery transmission of data blocks.
Exemplarily, the DNAV (such as obeying rule mentioned above) of its all sector can be set from the equipment participating in equipment that above-mentioned discovery data block exchanges and receive above-mentioned omnidirectional frame.Contrast Figure 28 is described more details.Exemplarily, about device discovery, when above-mentioned 3rd equipment 1006 obtains the TXOP (such as according to rule mentioned above) of omni-direction transmissions, first it can transmit omnidirectional's frame, and above-mentioned omnidirectional frame can be " device discovery request " frame being called frame 2816 in Figure 28.In the duration field of this frame, above-mentioned 3rd equipment 1006 can comprise covering until frame 2856 end of transmission time the duration value of time period.When the adjacent equipment of above-mentioned 3rd equipment 1006 monitors above-mentioned frame 2816, above-mentioned adjacent equipment can arrange its DNAV according to rule given above.When above-mentioned 6th equipment 1012 received frame 2816, it can check itself DNAV and TM, (if such as by above-described rule) its can participate in the communication with above-mentioned 3rd equipment 1006 in the mode of omnidirectional, so it can send omnidirectional's frame, and this omnidirectional's frame can be " device discovery response " frame being called frame 2838 in Figure 28.After received frame 2838, all devices can according to their respective DNAV of Policy Updates given above.When received frame 2838, above-mentioned 3rd equipment 1006 can start order and directionally transmit its frame for device discovery, and above-mentioned 6th equipment 1012 can carry out and sequential delivery similar shown in Figure 28.
Exemplarily, can consider that the said equipment between above-mentioned 3rd equipment 1006 and above-mentioned 6th equipment 1012 finds that data block exchanges.When being realised that the prefix of above-mentioned omnidirectional frame or the end time of postamble from above-mentioned 3rd equipment 1006 and receive above-mentioned 3rd oriented frame 2828 from above-mentioned 3rd equipment 1006, above-mentioned 6th equipment 1012 can judge that above-mentioned 3rd equipment 1006 can use the 3rd sector 1006 of above-mentioned 3rd equipment 1006 3communicate with its (namely with above-mentioned 6th equipment 1012).Exchange about above-mentioned same discovery data block, when above-mentioned 3rd equipment 1006 be realised that the prefix of above-mentioned omnidirectional frame 2816 or the end time of postamble from above-mentioned 3rd equipment 1006 and receives above-mentioned first oriented frame 2844 from above-mentioned 6th equipment 1012, above-mentioned 3rd equipment 1006 can judge that above-mentioned 6th equipment 1012 can use the first sector 1012 of above-mentioned 6th equipment 1012 1communicate with its (namely with above-mentioned 3rd equipment 1006).Then above-mentioned 6th equipment 1012 and above-mentioned 3rd equipment 1006 correspondingly can upgrade their TM.By using more similar paired exchange, equipment can set up the direction in this equipment neighborhood.As described above, topological IE can be used for exchanging the information relevant with direction by equipment.
In various embodiments, each equipment can know from received topological IE each adjacent equipment of the said equipment has how many sectors.Mentioned above according in the oriented transmitting step of each embodiment, each equipment can know in advance in respect of how many oriented frame from owner's (transmitting the equipment of above-mentioned discovery data block) of above-mentioned TXOP and the above-mentioned oriented frame estimating the possessory particular sector transmission when obtained from above-mentioned TXOP.
In various embodiments, participate in device discovery procedure according to the optional step of each embodiment for two equipment above by using, each in two equipment may wish to receive at least one discovery data block from another equipment by using according to the above-mentioned oriented transmitting step of each embodiment in 2 × aMaxDiscoveryLatency TU in the past.In optional step above, receiving equipment can be known pre-in respect of the owner of how many oriented frame from above-mentioned TXOP, estimate the above-mentioned oriented frame of the possessory particular sector transmission when obtained from above-mentioned TXOP, and when it can start its oriented transmission (because the order of the oriented frame of above-mentioned interFrameGap, one by one sector order ground transmission and above-mentioned omnidirectional frame and oriented frame transmission duration can be fixing and known) within the above-mentioned data block period.Similarly, the owner of above-mentioned TXOP can know pre-in respect of how many oriented frame from above-mentioned receiving equipment (that equipment that such as omnidirectional's frame of above-mentioned discovery data block beginning mails to), estimate the above-mentioned oriented frame when obtaining transmitting from the particular sector of above-mentioned receiving equipment, and it estimates when above-mentioned data block exchange can complete (such as because it is by knowing the number of sectors of above-mentioned receiving equipment from the topological IE of above-mentioned receiving equipment, the owner of above-mentioned TXOP can use this time, criterion as the duration field in the above-mentioned omnidirectional frame sent the owner of the above-mentioned TXOP when the TXOP for transmitting discovery data block starts is arranged).
In various embodiments, for DCF, the said equipment discovery strategy is about using device discovery claim frame proposed above and device discovery response frame can be the same with mentioned above.Frame 2716 in Figure 27 and Figure 28 and frame 1816 can be device discovery claim frame respectively.Frame 2838 in Figure 28 can be device discovery response frame.According in the above-mentioned oriented transmitting step of each embodiment, the duration field be included in frame 2716 can cover the transmission period (such as contrasting described in Figure 27) during the frame end of transmission of a to the last oriented transmission.According in the above-mentioned optional step of each embodiment, the duration field be included in frame 2816 can cover the transmission period (such as contrasting described in Figure 28) during frame 2856 end of transmission of a to the last oriented transmission.After switching equipment finds data block between both devices, above-mentioned two equipment can exchange the information relevant with they neighborhood directions by transmitting the frame with topology information element.
In various embodiments, after the equipment just having completed TXOP (such as the duration of RTS frame is just pass by) can allow the SIFS after above-mentioned TXOP terminates, transmitting apparatus finds claim frame.After media become idle condition, miscellaneous equipment can call keeps out of the way DIFS (back off DIFS).In various embodiments, if select not transmitting apparatus to find claim frame after the SIFS of equipment after previous T XOP terminates, so it can call and keep out of the way DIFS after media become idle condition.
In various embodiments, for PCF or HCF, the said equipment finds to carry out as follows: when PC or HC want to transmit as above find data block time, it can allow the whenever transmission of its transmission.But above-mentioned PC or HC always can find first frame of any discovery data block that claim frame can transmit as it by transmission equipment.When above-mentioned PC or HC is to any device transmission CF poll frame or QoS CF poll frame, the said equipment can utilize this chance (or TXOP) to send discovery data block.In this, above-mentioned PC or HC often can send at least one CF poll frame or QoS CF poll frame to equipment by aMaxDiscoveryLatency TU or the individual DTIM of " X " (wherein " X " can be parameter) (business transferring Indication message (Delivery Traffic Indication Message)).After SIFS after receiving above-mentioned CF poll frame or QoS CF poll frame, the said equipment can find the part of oriented frame as above-mentioned discovery data block of claim frame and order subsequently by transmission equipment.Above-mentioned PC, after the device discovery claim frame receiving above-mentioned omnidirectional, can wait for that the duration provided in received frame added the time of PIFS gained before transmission other frame any.Device discovery transmission of data blocks can terminate to complete in the past at the TXOP of license.
In various embodiments, HC can also be provided for the TXOP of device discovery transmission of data blocks in CP to miscellaneous equipment.
In various embodiments, if even also do not send one in an equipment aMaxDiscoveryLatency in the past chronomere (TU) to find data block, so except device discovery claim frame, equipment can not send any RTS or CTS frame or other frame any.Equipment even also can be set up first power and is sent RTS frame or CTS frame to the adjacent equipment of (device discovery) information in its 2 × aMaxDiscoveryLatency in the past TU.If it is not RTS or CTS issuing the said equipment that the adjacent equipment that equipment does not also set up direction (such as by device discovery mentioned above) information in its 2 × aMaxDiscoveryLatency chronomere (TU) in the past receives, so the said equipment can use the duration field provided in received RTS frame or CTS frame to upgrade all DNA V of the logic sector of the said equipment.If equipment receives from even also not setting up the adjacent equipment of first power to (device discovery) information in its 2 × aMaxDiscoveryLatency TU in the past the oriented RTS or the omnidirectional RTS that issue the said equipment, so it can not be answered with CTS frame.Only have when above-mentioned direction (device discovery) information does not change in the TM about adjacent equipment (all links for above-mentioned adjacent equipment participates in as summit) for 4 × aMaxDiscoveryLatency the TU in past, equipment just allows to send RTS or CTS to above-mentioned adjacent equipment.
In various embodiments, transfer of data can be oriented always.
In various embodiments, topological IE can always send in each device discovery claim frame and each device discovery response frame.RA or DA using the device discovery claim frame sent according to the oriented transmitting step of each embodiment as described above like that can be broadcast address.
In various embodiments, after equipment receives topological IE from adjacent equipment, all links that the said equipment can participate in about above-mentioned adjacent equipment upgrade the TM (upgrading immediately in SIFS) of the said equipment.In various embodiments, if link (adjacent equipment can be the link on summit) has changed or added in the TM of the said equipment in the TM of the said equipment, so the said equipment can not send any RTS or CTS to above-mentioned adjacent equipment in follow-up 4 × aMaxDiscoveryLatency TU after above-mentioned SIFS.
Although about specific embodiment to invention has been detailed displaying and description, but it should be appreciated by those skilled in the art that when not deviating from the spirit and scope of the present invention that appended claims limits, can to the various changes carried out herein in form and details.Therefore, scope of the present invention is represented by appended claims, and all changes fallen in claim meaning of equal value and scope are intended to comprise within the scope of the invention.

Claims (35)

1. a method for message transfer, it comprises:
Produce the message comprising information, described information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, and the first radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the second radio communication equipment; With
Transmit the message produced.
2. the method for claim 1, wherein in described second radio communication equipment, produce described message; Wherein, transmit from described second radio communication equipment the message produced.
3. method as claimed in claim 2, comprises further:
Described first radio communication equipment sequentially transmits the first signal, secondary signal and the 3rd signal, described first signal is omni-direction transmissions, described secondary signal is transmitted in the first radio wave transmissions/receiving area, and described 3rd signal transmits in the second radio wave transmissions/receiving area;
Described second radio communication equipment receives described first signal in first time of reception from described first radio communication equipment, to receive described secondary signal and described 3rd signal in second time of reception from described first radio communication equipment; And
Described second radio communication equipment, according to the difference between described first time of reception and described second time of reception, determines that described first radio communication equipment is communicate and operable described radio wave transmissions/receiving area of specifying with described second radio communication equipment.
4. method as claimed in claim 3, wherein, at least one in described first signal, described secondary signal and described 3rd signal comprises the information identifying described first radio communication equipment.
5. the method for claim 1, wherein in described first radio communication equipment, produce described message; Wherein, transmit from described first radio communication equipment the message produced.
6. method as claimed in claim 5, comprises further:
Described second radio communication equipment omni-directionally signal transmission;
Whether whether described first radio communication equipment sequentially judges, can be received in the first radio wave transmissions/receiving area in first time of reception and can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of described second radio communication equipment omni-direction transmissions by the first signal of described second radio communication equipment omni-direction transmissions;
According to the described judgement that whether by the first signal of described second radio communication equipment omni-direction transmissions can be received in the first radio wave transmissions/receiving area in first time of reception and whether can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of described second radio communication equipment omni-direction transmissions, described first radio communication equipment determines that described first radio communication equipment is for communicating and operable radio wave transmissions/receiving area with described second radio communication equipment.
7. method as claimed in claim 6, wherein, in described first time of reception, activate the receiving circuit of the receiving circuit of the described first radio wave transmissions/receiving area of described first radio communication equipment and other radio wave transmissions/receiving areas all of described first radio communication equipment of deexcitation except the described first radio wave transmissions/receiving area of described first radio communication equipment.
8. the method according to any one of claim 6-7, wherein, is comprised the information identifying described second radio communication equipment by the signal of described second radio communication equipment omni-direction transmissions.
9. the method according to any one of claim 1-7, wherein, described second radio communication equipment is configured to perform oriented radio communication.
10. the method according to any one of claim 1-7, wherein, the message produced is transmitted in frame according to following standard: WiMedia standard, ECMA standard, IEEE802 standard, IEEE802.11 standard, IEEE802.15.3 standard, IEEE802.15.3a standard, IEEE802.15.3c standard and ultra broadband standard.
11. methods according to any one of claim 1-7, wherein, in described multiple radio wave transmissions/receiving area, at least one radio wave transmissions/receiving area comprises the sector that limited by the angular domain relative to described first radio communication equipment preset at least partially.
12. methods according to any one of claim 1-7, wherein, do not set up the radio communication exchanged for user data when connecting, produce described message between described first radio communication equipment and described second radio communication equipment.
13. 1 kinds of methods storing information, it comprises:
Receiving package is containing the message of information, described information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, and the first radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the second radio communication equipment; And
Store the described information be included in received message.
14. methods as claimed in claim 13, comprise further:
Receive one or more other message, the other message of every bar comprises respective information, described respective information specifies radio wave transmissions/receiving area other separately from respective multiple other radio wave transmissions/receiving area candidate, and the first other separately radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area other separately to communicate with the second other separately radio communication equipment; And
Store the described respective information be included in received one or more other message.
15. methods as described in claim 13 or 14, comprise further:
Receive and store the information having started between instruction the 5th radio communication equipment and the 6th radio communication equipment to communicate.
16. methods as claimed in claim 14, wherein, be configured to perform in the 3rd radio communication equipment of oriented radio communication in multiple radio wave transmissions/receiving area, receive described message, and the described information be included in received message is stored in described 3rd radio communication equipment.
17. methods as claimed in claim 16, comprise further:
When starting to communicate with the 4th radio communication equipment to described 3rd radio communication equipment request, determine whether to start to communicate with described 4th radio communication equipment according to stored information.
18. methods as claimed in claim 16, comprise further:
When starting to communicate with the 4th radio communication equipment to described 3rd radio communication equipment request, determine and the communication start time that described 4th radio communication equipment communicates according to stored information.
19. methods as claimed in claim 15, comprise further:
Be defined as carrying out radio communication with in described 5th radio communication equipment and described 6th radio communication equipment and operable radio wave transmissions/receiving area; And
Connection is arranged to determined radio wave transmissions/receiving area and starts restriction.
20. 1 kinds of message transmission equipment, it comprises:
Message generator, it is configured to produce the message comprising information, described information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, and the first radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the second radio communication equipment; And
Transmitter, it is configured to transmit the described message produced by described message generator.
21. message transmission equipment as claimed in claim 20, wherein, described message transmission equipment is configured to be arranged in described second radio communication equipment.
22. message transmission equipment as claimed in claim 21, wherein, described first radio communication equipment is configured to sequentially transmit the first signal, secondary signal and the 3rd signal further, described first signal is omni-direction transmissions, described secondary signal is transmitted in the first radio wave transmissions/receiving area, and described 3rd signal transmits in the second radio wave transmissions/receiving area;
Described second radio communication equipment is configured to further, receives described first signal in first time of reception and to receive described secondary signal and described 3rd signal in second time of reception from described first radio communication equipment from described first radio communication equipment; And
Described second radio communication equipment is configured to further, determines that described first radio communication equipment is for communicating and operable radio wave transmissions/receiving area with described second radio communication equipment according to the difference between described first time of reception and described second time of reception.
23. message transmission equipment as claimed in claim 20, wherein, described message transmission equipment is configured to be arranged in described first radio communication equipment.
24. message transmission equipment as claimed in claim 23, wherein, described second radio communication equipment is configured to omni-directionally signal transmission;
Wherein, whether whether described first radio communication equipment is configured to sequentially judge further, can be received in the first radio wave transmissions/receiving area in first time of reception and can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of described second radio communication equipment omni-direction transmissions by the first signal of described second radio communication equipment omni-direction transmissions;
Wherein, described first radio communication equipment is configured to further, according to the described judgement whether whether the first signal by described second radio communication equipment omni-direction transmissions can receive in first time of reception and can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of described second radio communication equipment omni-direction transmissions in the first radio wave transmissions/receiving area, determine that described first radio communication equipment is for communicating and operable radio wave transmissions/receiving area with described second radio communication equipment.
25. message transmission equipment as claimed in claim 24, comprise further:
First receiving circuit, it is configured to transmitting/receiving signal in described first radio wave transmissions/receiving area;
Second receiving circuit, it is configured to transmitting/receiving signal in described second radio wave transmissions/receiving area;
Wherein, described first radio communication equipment is configured to further, activates described first receiving circuit and the second receiving circuit described in deexcitation in described first time of reception.
26. 1 kinds of information storing devices, it comprises:
Message receiver, it is configured to the message of receiving package containing information, described information specifies radio wave transmissions/receiving area from multiple radio wave transmissions/receiving area candidate, and the first radio communication equipment being configured to perform oriented radio communication can use specified radio wave transmissions/receiving area to communicate with the second radio communication equipment; And
Memory, it is configured to store the described information be included in described message.
27. information storing devices as claimed in claim 26, wherein, described information storing device is configured to receive and store the information having started between instruction the 5th radio communication equipment and the 6th radio communication equipment to communicate further.
28. information storing devices as described in claim 26 or 27, be configured to further communicate with the 3rd radio communication equipment, described 3rd radio communication equipment is configured to perform oriented radio communication in multiple radio wave transmissions/receiving area.
29. information storing devices as claimed in claim 28, comprise further:
Communication starts determiner, and it is configured to when starting to communicate with the 4th radio communication equipment to described 3rd radio communication equipment request, determines whether to start to communicate with described 4th radio communication equipment according to stored information.
30. information storing devices as claimed in claim 29, comprise further:
Communication start time determiner, it is configured to, when starting to communicate with the 4th radio communication equipment to described 3rd radio communication equipment request, determine and the communication start time that described 4th radio communication equipment communicates according to stored information.
31. information storing devices according to any one of claim 27,29 and 30, comprise further:
The opposing party's radio wave transmissions/receiving area determiner, it is configured to of being defined as with described 5th radio communication equipment and described 6th radio communication equipment and carries out the operable radio wave transmissions/receiving area of radio communication; And
Connection starts restriction and arranges device, and it is configured to arrange connection for determined radio wave transmissions/receiving area and starts restriction.
32. 1 kinds of radio wave transmissions/receiving area defining method, it comprises:
Be configured to the first radio communication equipment performing oriented radio communication in multiple radio wave transmissions/receiving area, sequentially transmit the first signal, secondary signal and the 3rd signal, described first signal is omni-direction transmissions, described secondary signal is transmitted in the first radio wave transmissions/receiving area, and described 3rd signal transmits in the second radio wave transmissions/receiving area;
Second radio communication equipment receives described first signal in first time of reception from described first radio communication equipment, to receive described secondary signal and described 3rd signal in second time of reception from described first radio communication equipment;
Described second radio communication equipment, according to the difference between described first time of reception and described second time of reception, determines that described first radio communication equipment is for communicating and operable radio wave transmissions/receiving area with described second radio communication equipment.
33. 1 kinds of radio wave transmissions/receiving area defining method, it comprises:
Second radio communication equipment omni-directionally signal transmission;
Whether whether the first radio communication equipment being configured to perform oriented radio communication in multiple radio wave transmissions/receiving area sequentially judges, can be received in the first radio wave transmissions/receiving area in first time of reception and can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of described second radio communication equipment omni-direction transmissions by the first signal of described second radio communication equipment omni-direction transmissions;
The described judgement whether whether described first radio communication equipment can receive in first time of reception and can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of described second radio communication equipment omni-direction transmissions according to the first signal by described second radio communication equipment omni-direction transmissions in the first radio wave transmissions/receiving area, determines that described first radio communication equipment is for communicating and operable radio wave transmissions/receiving area with described second radio communication equipment.
34. 1 kinds of radio wave transmissions/receiving area certainty annuity, it comprises:
First radio communication equipment, it is configured in multiple radio wave transmissions/receiving area, perform oriented radio communication and sequentially transmit the first signal, secondary signal and the 3rd signal, described first signal is omni-direction transmissions, described secondary signal is transmitted in the first radio wave transmissions/receiving area, and described 3rd signal transmits in the second radio wave transmissions/receiving area;
Second radio communication equipment, it is configured to receive described first signal in first time of reception from described first radio communication equipment, to receive in described secondary signal and described 3rd signal in second time of reception from described first radio communication equipment;
Wherein, described second radio communication equipment is configured to according to the difference between described first time of reception and described second time of reception further, determines that described first radio communication equipment is for communicating and operable radio wave transmissions/receiving area with described second radio communication equipment.
35. 1 kinds of radio wave transmissions/receiving area certainty annuity, it comprises:
Second radio communication equipment, it is configured to omni-directionally signal transmission;
First radio communication equipment, it is configured to perform oriented radio communication in multiple radio wave transmissions/receiving area, and sequentially judges whether by the first signal of described second radio communication equipment omni-direction transmissions can be received in the first radio wave transmissions/receiving area in first time of reception and whether can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of described second radio communication equipment omni-direction transmissions;
Wherein, described first radio communication equipment is configured to further, according to the described judgement whether whether the first signal by described second radio communication equipment omni-direction transmissions can receive in first time of reception and can be received in the second radio wave transmissions/receiving area in second time of reception by the secondary signal of described second radio communication equipment omni-direction transmissions in the first radio wave transmissions/receiving area, determine that described first radio communication equipment is for communicating and operable radio wave transmissions/receiving area with described second radio communication equipment.
CN201080022550.3A 2009-03-31 2010-03-11 Methods for transmitting message, methods for storing information, message transmission devices and information storage devices Expired - Fee Related CN102439864B (en)

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