WO2013143356A1 - 一种目标站点、查询站点、通讯系统以及通讯方法 - Google Patents

一种目标站点、查询站点、通讯系统以及通讯方法 Download PDF

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Publication number
WO2013143356A1
WO2013143356A1 PCT/CN2013/071060 CN2013071060W WO2013143356A1 WO 2013143356 A1 WO2013143356 A1 WO 2013143356A1 CN 2013071060 W CN2013071060 W CN 2013071060W WO 2013143356 A1 WO2013143356 A1 WO 2013143356A1
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WIPO (PCT)
Prior art keywords
beacon frame
site
information
target
target station
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PCT/CN2013/071060
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English (en)
French (fr)
Inventor
黄开缔
王学寰
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华为技术有限公司
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Publication of WO2013143356A1 publication Critical patent/WO2013143356A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0212Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • a target site, a query site, a communication system, and a communication method A target site, a query site, a communication system, and a communication method.
  • the application is submitted to the Chinese Patent Office on March 26, 2012, and the application number is 2012100826288.1.
  • the invention name is "a target site, a query site, a communication system, and a communication method.”
  • the priority of the Chinese Patent Application the entire contents of which is incorporated herein by reference.
  • TECHNICAL FIELD The present invention relates to a wireless communication technology or, in particular, to a target site, a query site, a communication system, and a communication method.
  • BSS Basic Service Set
  • STAs Stations
  • AP Access Point
  • ESS Express Service Set
  • IBSS Alternate Basic Service Set
  • a NAN Neighbor Awareness Network
  • the query site needs to know which target sites exist in the network, and usually obtains the target through the beacon frame transmission discovery mechanism.
  • the beacon frame is a management frame, used in the network to coordinate the synchronization between the target site and the surrounding sites, including some timing and wireless network information, the target site is in its own working channel, with random time From Point, according to a certain beacon frame period (value range 20ms to 1000ms, preset value is 100ms), send a beacon frame, query the site to listen to the beacon frame, and after receiving the beacon frame, the target site can be identified, and Initiate communication to the target site as needed.
  • a certain beacon frame period value range 20ms to 1000ms, preset value is 100ms
  • the embodiments of the present invention provide a communication method of a target station, which is used to solve the technical problem that the monitoring efficiency is low and the energy is not saved due to the need to monitor the channel at a target station after the target station transmits the beacon frame in the existing beacon frame transmission technology. .
  • the embodiment of the invention provides a communication method of a target site, and the method includes the following steps:
  • the target station transmits a beacon frame, the beacon frame includes working time information of the target station; and the target station monitors the working channel at a predetermined time specified by the working time information.
  • the embodiment of the invention provides a communication method for querying a site, and the method includes the following steps:
  • the querying station listens to the beacon frame transmitted by the target station on its working channel, and the beacon frame includes working time information of the target station.
  • the querying site initiates communication to the target site according to the working time information.
  • An embodiment of the present invention provides a target site, where the target site includes:
  • a beacon frame sending unit configured to send, by the target station, a beacon frame, where the beacon frame includes working time information of the target station;
  • the channel monitoring unit is configured to: the target station monitors the working channel at a predetermined time specified by the working time information.
  • An embodiment of the present invention provides a query site, where the query site includes:
  • a beacon frame monitoring unit configured to query a station to listen to a target station sent on its working channel A beacon frame, the beacon frame including working time information of the target station.
  • the communication connection unit is configured to query the station to send communication to the target site according to the working time information.
  • Embodiments of the present invention provide a communication system between a target site and a query site, where the system includes the target site and the query site.
  • the embodiment of the present invention increases the working time information about the working channel of the target station by using the existing beacon frame, so that after the querying site listens to the beacon frame, according to the information contained in the beacon frame, The working time information initiates communication to the target site during the period in which the target site is listening to the working channel.
  • the target station does not need to monitor the working channel at full time, and only needs to start to monitor the working channel at a predetermined time, so that the monitoring efficiency is high and energy saving.
  • FIG. 1 is a flowchart of a target station communication method according to a first embodiment of the present invention
  • FIG. 2 is a flowchart of a method for querying a site communication according to a second embodiment of the present invention
  • FIG. 3 is a structural block diagram of a target station according to a third embodiment of the present invention.
  • FIG. 4 is a structural block diagram of a query site according to a fourth embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a communication system between a target station and a query site according to a thirteenth embodiment of the present invention.
  • the target station since the target site cannot know that the query site initiates to itself The specific moment of communication, therefore, the target station needs to listen to the channel at full time during the time period between sending two beacon frames, so that the time interval for the target station to receive the inquiry station to initiate communication is uncertain and short, the existing full time period The channel is very inefficient and does not save power.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • FIG. 1 shows a flow of a target station communication method according to a first embodiment of the present invention, and only parts related to the embodiment of the present invention are shown for convenience of description.
  • Step S101 The target station sends a beacon frame, where the beacon frame includes working time information of the target station.
  • the target station because the beacon frame sent by the target station does not include the working time information of the target station, after the target station transmits the completed beacon frame, the target station immediately starts listening to the working channel until the target station sends the next beacon frame.
  • Target site monitoring is inefficient and not energy efficient.
  • the working time information of the target site that is, the time information of the target station listening to the working channel, including when to start monitoring the working channel and continue to be more For a long time, the working time information is included in the beacon frame transmitted by the target station.
  • the beacon frame includes transmission period information, and the target station sends a beacon frame according to the transmission period.
  • the manner of transmitting a beacon frame according to the embodiment of the present invention includes a broadcast beacon frame, a multicast beacon frame, a unicast beacon frame, and the like.
  • the working time information is time information of the target station listening to the working channel, including time information of the target station starting to monitor the working channel, and duration information of the target station listening to the working channel, and it should be noted that if There is no specific value of the duration information.
  • the duration of the target station listening to the working channel is a default value, for example, a half beacon frame transmission period or the like.
  • the time information may be represented by an absolute time, a beacon frame period number, or a beacon frame number, where the duration information may be Expressed in absolute time or number of beacon frame periods.
  • the absolute time means that the length of the used time period is a fixed value, which is independent of the transmission period of the beacon frame.
  • the time period between the time when the target station starts to listen to the working channel and the current time when the beacon frame is transmitted Is a fixed value, and the length of the time period in which the target station monitors the working channel is also a fixed value; the number of the beacon frame period is that the length of the time segment is related to the transmission period of the beacon frame, which is several times the transmission period of the beacon frame.
  • the time period between the time when the target station starts to monitor the working channel and the time when the current beacon frame is transmitted is several times of the beacon frame transmission period, and the length of the time period of the target station listening to the working channel is also a beacon.
  • the beacon frame number refers to, the beacon frames are numbered according to the sending time order, and the obtained number is set to a fixed value N, when the remainder is a preset value M, After transmitting the beacon frame, the target station immediately starts listening to the working channel. Further, the working time information further includes a time period in which the target station periodically monitors the working channel, indicating that the working time information is valid for a long time, and if the working time information does not include the time period, the target The time information at which the station begins to listen to the working channel is only valid for the expected time period.
  • different parameters are required, and specific parameters are specifically described in the following embodiments.
  • the beacon frame further includes working channel information of the target station, and the target station sends a beacon frame in the channel supported by the target station, where the supported channel may be one or several channels in the transmission channel, or All transmission channels.
  • each station can dynamically change its working channel, but there is only one working channel at each moment. Since the existing beacon frame does not contain the working channel information of the target station, the target station can only be in the current A beacon frame is transmitted in the working channel, and the inquiring station in the channel can initiate communication to the target station according to the need, and the inquiring station located in other channels can not hear the beacon frame message, if the target station simultaneously goes to other The channels transmit beacon frames.
  • the beacon frame further includes working channel information of the target station, and the target station transmits the beacon frame in multiple channels, and is located in other letters at this time.
  • the query site of the track (not the working channel) can acquire the working channel of the target site, and when such a query site needs to initiate communication to the target site, it can change its own channel to the working channel, so that The target site can be discovered by all the query sites, increasing the probability that the target site will be discovered.
  • the station can work in the 1 ⁇ , 2KHz, 3KHz frequency band. If the target station works on the 2KHz working channel and sends beacon frames to all channels, then other frequency bands (1 ⁇ , 3KHz band)
  • the querying site can also monitor the beacon frame. If the query site on these frequency bands needs to communicate with the target site, adjust the working frequency band to 2KHz, and initiate communication to the target site on the 2KHZ working channel. It can be seen that the target site can be found by the query site in the 1 ⁇ , 2KHz, 3KHz frequency band, which increases the probability of the target site being discovered.
  • Step S102 The target station monitors the working channel at the time specified by the working time information.
  • the target station since it is determined that the target station is in the time period information for monitoring the working channel, the target station only needs to start monitoring the working channel at the time specified by the work information, and the specified time is included in the working time information.
  • the target site can accept communication requests from the querying site during the period of listening to the working channel.
  • the idle timer is set to record the duration of the target station listening to the working channel.
  • the idle timer can be implemented by recording the channel idle state time and recording the idle time of the target site. When the timer expires, the target station ends listening.
  • the beacon frame further includes a sending indication bit, where the sending indication bit is used to indicate that the target station sends the information frame. If the indicator bit is valid, when the target station starts to listen to the working channel, it transmits an information frame on its working channel, and the information frame includes connection information and/or service information of the target station.
  • the broadcast indication bit Broadcast Bit in the beacon frame is set to 1, indicating that the indication bit is valid, and when the target station starts to monitor the working channel, the information frame is sent on the working channel, and the beacon frame includes the target.
  • Connection information and/or service information of the site where the connection information is mainly information about working parameters related to communication between the target site and the querying site, the service The information is mainly the specific content that the target site needs to send. For example, for a KFC service target site, the target site may choose to send the service information containing the special food in the working channel when starting to monitor the working channel, and query the site to the target site. Have a better understanding.
  • the beacon frame further includes data transmission rate information, and the target station and the query site support the data transmission rate, and the target station performs data communication with the query site at the data transmission rate. If the data transmission rate information is not included in the beacon frame, or the target station or the query site does not support the data transmission rate, the target station and the querying station perform data communication at the base rate.
  • the working time information includes information about the working time period of the target station listening to the working channel, and the target station only needs to be in a specified time period.
  • the working channel can be monitored, so that the target station does not need to monitor the working channel at full time. Therefore, the technical solution of the present invention greatly improves the channel monitoring efficiency, and is also relatively energy-saving.
  • FIG. 2 is a flowchart of a method for querying a site communication according to a second embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown.
  • the communication method includes the following steps:
  • Step S201 The querying station listens to the beacon frame sent by the target station on its working channel, where the beacon frame includes working time information of the target station.
  • each query site has its own working channel, and the querying site monitors the beacon frame on the respective working channel, and saves the beacon frame after listening to it.
  • the query site can be triggered by an event or periodically monitor the beacon frame.
  • the manner of the beacon frame sent by the target station in the embodiment of the present invention includes a broadcast beacon frame, a multicast beacon frame, and a unicast beacon frame.
  • Step S202 The querying site initiates communication to the target site according to the working time information.
  • the beacon frame includes working time information of the target station, that is, The time information of the working channel is monitored by the target station, including when the target station starts to monitor and how long it lasts. Further, the working time information further includes a time period during which the target station periodically monitors the working channel.
  • the communication may be initiated to the target site during the time period when the target site is listening to the working channel.
  • the beacon frame further includes working channel information of the target station, and the target station may send a beacon frame on the channel supported by the target station, where the supported channel may be one or several channels in the transmission channel, or all
  • the transmission channel, the query site outside the working channel of the target station also monitors the beacon frame, and if these query sites need to communicate with the target site, adjust their working channel to the working channel of the target site. So, the communication can be initiated to the target site on the working channel of the target site during the time period when the target site is listening to the working channel.
  • the query site can discover the target site, but in actual situations, the query site may not find the target site. For example, due to a transmission error during the beacon frame transmission, the query site listens. The working time information of the target station is not included in the beacon frame, or the working time information is incorrect. The target station does not monitor its working channel during the time period specified by the working time information, so that the target station is not found by the querying site; Alternatively, the working time information of the target site included in the beacon frame is obsolete when the querying site is ready to communicate with the target, and then the querying site cannot find the target site.
  • the beacon frame includes the sending period information of the beacon frame sent by the target station, and the querying station according to the sending period, when the similar situation is caused by the querying site.
  • the information and the transmission time of the current beacon frame are re-listened to the new beacon frame at the time of transmission of the next beacon frame. If the target station is still not found, the new beacon frame is monitored again until the target site can be found.
  • the beacon frame monitored by the query site further includes a sending indication bit.
  • the indicator bit is valid, the indication location is usually 1, and the querying site needs to communicate with the target site.
  • the information frame sent by the target station is monitored on the working channel of the target station, and the information frame includes connection information and/or service information of the target station.
  • the connection information is mainly information about working parameters related to the communication between the target site and the querying site, such as the signal strength of the information transmission, and the service information is mainly specific content that the target site needs to send, for example, for a KFC service target site.
  • the target station may choose to send the service information including the special food in the working channel.
  • the beacon frame monitored by the query site further includes data transmission rate information, where the query site and the target site support the data transmission rate, and the query site performs data communication with the target site at the data transmission rate. This allows data to be transferred at a higher rate. If the data transmission rate information is not included in the beacon frame, or if the query site or the target site does not support the data transmission rate, the querying site performs data communication with the target site at the base rate.
  • the querying site listens to the beacon frame sent by the target station, where the beacon frame includes working time information, where the working time information includes information about the working time period of the target station listening to the working channel, when When the querying site needs to initiate communication to the target site, it only needs to initiate communication to the target site within the working time period of the listening channel, so that the querying site only needs to initiate communication to the target site within a specified time period, and the target site does not need to be full time.
  • the working channel is monitored, so that the channel monitoring efficiency is greatly improved by the technical solution of the present invention, and energy saving is also achieved.
  • Fig. 3 is a block diagram showing the structure of a target station according to a third embodiment of the present invention, and only parts related to the embodiment of the present invention are shown for convenience of explanation.
  • a target site including:
  • a beacon frame sending unit 301 configured to send, by the target station, a beacon frame, where the beacon frame includes working time information of the target station;
  • a channel monitoring unit 302 configured to start at a time specified by the working time information by the target station Monitor the working channel.
  • the working time information of the target station needs to be determined, where the working time information is included in the beacon frame sent by the target station, and the working time information is time information that the target station is listening to the working channel.
  • the information includes the time information that the target station starts to monitor the working channel, and the duration information of the target station listening to the working channel. It should be noted that, if there is no specific value of the duration information, in this embodiment, the target station monitors the working channel.
  • the duration is the default value, for example, it can be a half beacon frame transmission period.
  • the time information may be represented by an absolute time, a number of beacon frame periods, or a beacon frame number
  • the duration may be represented by an absolute time or a number of beacon frame periods.
  • the absolute time, the beacon frame period, and the beacon frame number are specifically described in step S101, and details are not described herein again.
  • the beacon frame further includes sending period information, and the target station sends the beacon frame according to the sending period.
  • the beacon frame further includes working channel information of the target station, and the target station sends a beacon frame in the channel supported by the target station, where the supported channel may be one or several channels in the transmission channel, or all Transport channel.
  • each station can dynamically change its working channel, but there is only one working channel at each moment. Since the existing beacon frame does not contain the working channel information of the target station, the target station can only be in the current A beacon frame is transmitted in the working channel, and the inquiring station in the channel can initiate communication to the target station according to the need, and the inquiring station located in other channels cannot listen to the beacon frame message, if the target station simultaneously goes to other The channels transmit beacon frames.
  • the beacon frame further includes working channel information of the target station, and the target station sends the beacon frame in multiple channels, and the query site located on the other channel (not the working channel) can be Get the working channel to the target site, when Such a querying site needs to change its own channel to the working channel when initiating communication to the target site, so that the target site can be found by all the querying sites, which increases the probability that the target site is discovered.
  • the beacon frame further includes data transmission rate information, where the target station and the query site support the data transmission rate, and the target station performs data communication with the query site at the data transmission rate, if the beacon frame does not Including the data transmission rate information, or the target station or the querying site does not support the data transmission rate, and the target station and the querying station perform data communication at the basic rate.
  • the beacon frame further includes a sending indication bit, where the sending indication bit is used to indicate that the target station sends the information frame. If the indicator bit is valid, when the target station starts to listen to the working channel, it transmits an information frame on its working channel, and the information frame includes connection information and/or service information of the target station. Usually the indicated position 1 is valid.
  • the channel monitoring unit controls the target station to start monitoring the working channel only at a predetermined time.
  • Fig. 4 is a block diagram showing the structure of a target station according to a fourth embodiment of the present invention, and only parts related to the embodiment of the present invention are shown for convenience of explanation.
  • a query site that includes:
  • the beacon frame monitoring unit 401 is configured to query the station to listen to the beacon frame sent by the target station on its working channel, where the beacon frame includes working time information of the target station.
  • the communication connection unit 402 is configured to query the station to initiate communication to the target site according to the working time information.
  • each query site has its own working channel, and the querying site monitors the beacon frame on its working channel, and saves the beacon frame after it is monitored.
  • the beacon frame can be triggered by an event or periodically.
  • the beacon frame includes the working time information of the target station, that is, the time information of the target station listening to the working channel, including when the target station starts to monitor the work, and how long, and further, the working time information further includes the target site. The time period during which the working channel is periodically monitored.
  • the querying station may send a connection request to the target site during the time period in which the target site is listening to the working channel according to the time information.
  • the beacon frame further includes working channel information of the target station, and the target station sends a beacon frame to the channel supported by the target station, where the supported channel may be one or several channels in the transmission channel, or all The transmission channel, even if the query site outside the working channel will listen to the beacon frame, if these query sites need to communicate with the target station, adjust their working channel to the work of the target site. On the channel, it is possible to initiate communication to the target site at the working channel of the target site during the time period in which the target site is listening to the working channel.
  • the query site may not find the target site.
  • the beacon frame includes sending period information of the beacon frame sent by the target station, and the query site is configured according to The sending period information and the sending moment of the current beacon frame are re-listening to the new beacon frame at the next beacon frame sending time. If the querying station still does not find the target station, the new beacon frame is monitored again until it can be found. Target site.
  • the beacon frame monitored by the query site further includes a sending indication bit.
  • the indication position is usually 1, and the query site needs to communicate with the target site when the communication site is connected to the target site.
  • the information frame sent by the target station is monitored on the working channel, and the information frame includes connection information and/or service information of the target station.
  • the beacon frame monitored by the query site further includes data transmission rate information
  • the query site and the target site support the data transmission rate query site to perform data communication with the target site at the data transmission rate, if The data transmission rate information is not included in the beacon frame, or the query site or the target site does not support the data transmission rate, and the querying site performs data communication with the target site at the base rate. This allows data to be transferred at a higher rate. It can be seen from the above embodiments that the working mode of the target site and the querying site depends on the working time information contained in the beacon frame sent by the target site, including the time information that the target site starts to monitor the working channel, and the target site monitoring.
  • the duration information of the working channel further, the working time information further includes a time period in which the target station periodically listens to the working channel.
  • the time information may be represented by an absolute time, a number of beacon frame periods, or a beacon frame number
  • the duration information may be represented by an absolute time or a number of beacon frame periods. This information is embodied in the parameters contained in the beacon frame. In the following embodiments, the communication between the target site and the query site is described by selecting different beacon frame parameters.
  • Embodiment 5 Embodiment 5:
  • the target station periodically monitors the working channel, and the time information of the target station starting to monitor the working channel and the duration information of the target station listening working channel are all expressed in absolute time.
  • Step S501 The target station sends a beacon frame, where the beacon frame includes working time information.
  • the beacon frame includes:
  • the beacon frame transmission period refers to the time interval between the scheduled transmission times of two adjacent beacon frames
  • the beacon frame transmission lag time refers to the difference between the actual transmission time of the beacon frame and the scheduled transmission time
  • Working time Offset refers to the time interval between the actual or scheduled sending time of the beacon frame and the next time the target station starts to monitor the working channel. The value of 0 indicates that the target station is listening.
  • the minimum window of working hours refers to the shortest duration of the target station listening to the working channel, and 0 means full-time monitoring;
  • the working mode period refers to the time interval between two adjacent start to monitor the working channel
  • working channel refers to the channel monitored by the target station
  • G data transmission rate, refers to the data transmission rate between the target site and the query site;
  • H Sending an indication bit, indicating that the only indication position 1 indicates that the target station sends an information frame when starting to monitor the working channel;
  • the items B, G, and H are optional information
  • the items B, C, D, and E are the working time information
  • the working time information indicates time information of the target station listening to the working channel, including when to start monitoring. The working channel and how long it lasts.
  • Step S502 The target station monitors the working channel at the time specified by the working time information.
  • the predetermined time is a time point at which the target station included in the working time information starts to monitor the working channel. For example, in the embodiment, by using the working time Offset, it is known that the next target station starts to monitor the working channel. At the moment.
  • Step S503 The querying station listens to the beacon frame sent by the target station on its working channel.
  • the query site is triggered by an event or periodically listens to the working channel.
  • Step S504 The querying site initiates communication to the target site according to the working time information.
  • the querying station can know the target site according to the working time information (ie, the beacon frame sending lag time, the working time offset, the working time minimum window, the working mode period) and the current beacon frame sending time.
  • the monitored beacon frame includes the transmission indication bit and is valid
  • the information frame sent by the target station needs to be monitored, and the communication parameter in the information frame is used to establish a communication connection with the target site.
  • the data transmission rate is also included in the beacon frame and both the query site and the target site support the data transmission rate, the query site selects the data transmission rate to perform data communication with the target site; otherwise, the query site uses the base rate and the target site. Data communication.
  • the query site may not find the target site, for example, because the beacon frame transmission error causes no work time information of the target site or incorrect working time information in the beacon frame, at this time, the query site is based on the current beacon.
  • Frame transmission time, beacon frame transmission delay And the beacon frame transmission period acquires the transmission time axis of the beacon frame, wherein the beacon frame transmission lag time is optional information, and according to the time axis, the new beacon frame sent by the target frame is monitored, and according to the working time thereof again The information initiates communication to the target site until the target site can be discovered.
  • the target station periodically monitors the working channel, the time information of the target station starts to monitor the working channel, and the representation of the number of beacon frame periods, and the duration information of the target station listening to the working channel is expressed in absolute time.
  • Step S601 The target station sends a beacon frame, where the beacon frame includes working time information.
  • the beacon frame includes:
  • A beacon frame transmission period
  • the working time period Offset refers to the number of beacon frame periods between the actual or scheduled transmission time of the beacon frame and the next time the target station starts to monitor the working channel, that is, after the current beacon frame is transmitted, several times During the beacon frame period, the target station starts to listen to the working channel, and a value of 0 indicates that the target station is listening;
  • the number of working mode periods refers to the number of beacon frame periods separated by the adjacent two starting listening channels
  • the items B, G, and H are optional information
  • the items B, C, D, and E are the working time information
  • the working time information indicates time information of the target station listening to the working channel, including When you start listening to the working channel and how long it lasts.
  • Step S602 The target station monitors the working channel at the time specified by the working time information. The same as step S502, and details are not described herein again.
  • Step S603 The querying station listens to the beacon frame sent by the target station on its working channel. The same as step S503, and details are not described herein again.
  • Step S604 the querying site initiates communication to the target site according to the working time information.
  • the querying station can know according to the working time information (ie, the beacon frame sending delay time, the working time period Offset, the working time minimum window, the working mode period number), and the current beacon frame sending time.
  • the target station is in a time period of listening to the working channel, wherein the beacon frame sending lag time is optional, and the querying station initiates communication to the target station on the working channel of the target station during the time period.
  • the monitored beacon frame includes the transmission indication bit and is valid
  • the information frame sent by the target station needs to be monitored, and the communication parameter in the information frame is used to establish a communication connection with the target site.
  • the data transmission rate is also included in the beacon frame and both the query site and the target site support the data transmission rate, the query site selects the data transmission rate to perform data communication with the target site; otherwise, the query site uses the base rate and the target site. Data communication.
  • the query site may not find the target site, for example, because the beacon frame transmission error causes no work time information of the target site or incorrect working time information in the beacon frame, at this time, the query site is based on the current beacon.
  • the transmission time of the frame, the beacon frame transmission lag time, and the beacon frame transmission period acquire the transmission time axis of the beacon frame, wherein the beacon frame transmission lag time is optional information, and the new target transmitted by the target frame is monitored according to the time axis.
  • the beacon frame according to the working time information therein, initiates communication to the target site until the target site can be found.
  • the difference between the embodiment and the fifth embodiment is that the time at which the querying station starts to monitor the working channel is associated with the sending time of the beacon frame, that is, the target station will start to listen to the working channel after some specific beacon frames are transmitted.
  • Example 7 the time at which the querying station starts to monitor the working channel is associated with the sending time of the beacon frame, that is, the target station will start to listen to the working channel after some specific beacon frames are transmitted.
  • the target station periodically monitors the working channel, and the time information of the target station starts to monitor the working channel, and the performance of the beacon frame number, and the duration information of the target station listening to the working channel is expressed in absolute time.
  • Step S701 The target station sends a beacon frame, where the beacon frame includes working time information.
  • the beacon frame includes:
  • Beacon frame number SeqNo each beacon frame is sent to the target station and numbered sequentially;
  • the number of working hours N which means that the number of the beacon frame is N, and when the remainder is a certain value, the target station starts to listen to the working channel after transmitting the beacon frame;
  • the items C, G, and H are optional information
  • the items A, C, D, and E are the working time information
  • the working time information indicates time information of the target station listening to the working channel, including when to start monitoring. The working channel and how long it lasts.
  • Step S702 The target station monitors the working channel at a predetermined time specified by the working time information. The same as step S502, and details are not described herein again.
  • Step S703 The querying station listens to the beacon frame sent by the target station on its working channel. The same as step S503, and details are not described herein again.
  • Step S704 the querying site initiates communication to the target site according to the working time information.
  • the querying station according to the working time information ie, beacon frame transmission lag time, beacon frame number SeqNo, working period minimum window, working time period number N
  • the time at which the current beacon frame is transmitted can be known as the time period during which the target station is listening to the working channel, wherein the beacon frame transmission lag time is optional, and the querying station initiates to the target site on the working channel of the target station during the time period. Communication.
  • the monitored beacon frame includes the transmission indication bit and is valid
  • the information frame sent by the target station needs to be monitored, and the communication parameter in the information frame is used to establish a communication connection with the target site.
  • the data transmission rate is also included in the beacon frame and both the query site and the target site support the data transmission rate, the query site selects the data transmission rate to perform data communication with the target site; otherwise, the query site uses the base rate and the target site. Data communication.
  • the query site may not find the target site, for example, because the beacon frame transmission error causes no work time information of the target site or incorrect working time information in the beacon frame, at this time, the query site is based on the current beacon.
  • the transmission time of the frame, the beacon frame transmission lag time, and the beacon frame transmission period acquire the transmission time axis of the beacon frame, wherein the beacon frame transmission lag time is optional information, and the new target transmitted by the target frame is monitored according to the time axis.
  • the beacon frame according to the working time information therein, initiates communication to the target site until the target site can be found.
  • the target station no longer periodically monitors the working channel, and the time information of the target station starting to monitor the working channel and the duration information of the target station listening working channel are all expressed in absolute time.
  • Step S801 The target station sends a beacon frame, where the beacon frame includes working time information.
  • the beacon frame includes:
  • A beacon frame transmission period
  • the items B, G, and H are optional information, and the items B, C, D, and E are the working time information. Since the working time information does not include the time period in which the target station monitors the working channel, only the expected working hours are included. For example, if the expected working time is 2, the working period of one of the listening working channels is different from the current beacon frame. 2 beacon frame transmission period, the other working channel of the listening working channel has 6 beacon frame transmission periods from the current beacon frame, then the working time Offset has two values, one is 2 beacon frame transmission periods The length of time, one is the length of time of the 6 beacon frame transmission period, and the working time information is valid during the period indicated by the expected number of working hours. Therefore, only the time information of the target station's recent monitoring working channel can be known from the working time information.
  • Step S802 The target station monitors the working channel at a predetermined time specified by the working time information.
  • Step S803 The querying station listens to the beacon frame sent by the target station on its working channel.
  • Step S804 the querying site initiates communication to the target site according to the working time information.
  • the querying station can know the target according to the working time information (ie, the beacon frame sending lag time, the working time offset, the working time minimum window, the expected working time), and the current beacon frame sending time.
  • the working time information ie, the beacon frame sending lag time, the working time offset, the working time minimum window, the expected working time
  • the querying station initiates communication to the target station on the working channel of the target station during the time period.
  • the query site needs to be When the target station performs a communication connection, it needs to listen to the information frame sent by the target station, and establish a communication connection with the target station by using the communication parameters in the information frame; if the beacon frame further includes the data transmission rate and the query site and the target site support the site Referring to the data transmission rate, the querying site selects the data transmission rate to communicate with the target site for data communication; otherwise, the querying site performs data communication with the target site at the base rate.
  • the querying station If the query site needs to communicate with the target site, there is no working time information of the target station in the beacon frame, or no target site is in the listening working channel within the time range indicated by the expected working hours. Time period, when the working time information is outdated, the querying station does not find the target station, then the querying station obtains the sending of the beacon frame according to the information such as the current beacon frame sending time, the beacon frame sending lag time, and the beacon frame sending period.
  • the time axis wherein the beacon frame transmission lag time is optional information, and the new beacon frame sent by the target frame is monitored according to the time axis, and the communication is initiated to the target station according to the working time information therein until the target station can be found.
  • the target station does not periodically enter the channel listening state, but dynamically monitors the working channel, so only the near-term target can be learned from the information carried in the beacon frame.
  • the station monitors the time information of the working channel.
  • the target station does not periodically monitor the working channel, the time information of the target station starts to monitor the working channel, and the performance of the beacon frame period, and the duration information of the target station listening to the working channel is expressed by the absolute time. the way.
  • Step S901 The target station sends a beacon frame, where the beacon frame includes working time information.
  • the beacon frame includes:
  • A beacon frame transmission period
  • the items B, G, and H are optional information, and the items B, C, D, and E are the working time information. Since the working time information does not include the time period in which the target station monitors the working channel, only the expected working hours are included. For example, if the expected working time is 2, the working period of one of the listening working channels is different from the current beacon frame. 2 beacon frame transmission period, the other working channel of the listening working channel has 6 beacon frame transmission periods from the current beacon frame, then the working time period Offset has two values, one is 2, one is 6 The working time information is valid during the time period indicated by the expected working hours. Therefore, only the time information of the target station's recent monitoring of the working channel can be known from the working time information.
  • Step S902 The target station monitors the working channel at a predetermined time specified by the working time information.
  • Step S903 The querying station listens to the beacon frame sent by the target station on its working channel.
  • Step S904 the querying site initiates communication to the target site according to the working time information.
  • the querying station can know according to the working time information (ie, the beacon frame sending delay time, the working time period Offset, the working time minimum window, the expected working time number), and the current beacon frame sending time.
  • the target station is in a time period of listening to the working channel, wherein the beacon frame sending lag time is optional, and the querying station initiates communication to the target station on the working channel of the target station during the time period.
  • the monitored beacon frame includes the transmission indication bit and is valid
  • the information frame sent by the target station needs to be monitored, and the communication parameter in the information frame is used to establish a communication connection with the target site.
  • the query site selects the data transmission The transmission rate communicates with the target site. Otherwise, the query site communicates with the target site at the base rate.
  • the querying station If the query site needs to communicate with the target site, there is no working time information of the target station in the beacon frame, or no target site is in the listening working channel within the time range indicated by the expected working hours. Time period, when the working time information is outdated, the querying station does not find the target station, then the querying station obtains the sending of the beacon frame according to the information such as the current beacon frame sending time, the beacon frame sending lag time, and the beacon frame sending period.
  • the time axis wherein the beacon frame transmission lag time is optional information, and the new beacon frame sent by the target frame is monitored according to the time axis, and the communication is initiated to the target station according to the working time information therein until the target station can be found.
  • Example 10 the difference between this embodiment and the eighth embodiment is that the target station starts to listen to the working channel after some specific beacon frames are transmitted.
  • the target station periodically monitors the working channel, and the time information of the target station starting to monitor the working channel and the duration information of the target station listening working channel are all represented by the number of beacon frame periods.
  • Step S1001 The target station enters a state of transmitting a beacon frame at a predetermined time and transmits a beacon frame, and exits the state after the transmission is completed.
  • the beacon frame includes:
  • A beacon frame transmission period
  • D The minimum period window of the working period, indicating the minimum number of consecutive beacon frame periods of the target station listening to the working channel, and indicating the minimum duration of the listening working channel by several times of the beacon frame period, if the window can only be some a specific value, then you need to save the item;
  • E the number of working mode cycles;
  • the items B, G, and H are optional information
  • the items B, C, D, and E are the working time information
  • the working time information indicates time information of the target station listening to the working channel, including when to start monitoring. The working channel and how long it lasts.
  • Step S1002 The target station monitors the working channel at a predetermined time specified by the working time information.
  • Step S1003 The querying station listens to the beacon frame sent by the target station on its working channel.
  • Step S1004 The querying station initiates communication to the target site according to the working time information.
  • the querying site acquires a time axis in which the target site is in the listening channel state according to the related index information in the monitored beacon frame, and the related index information includes:
  • the querying station is known according to the working time information (ie, the beacon frame transmission lag time, the working time period Offset, the working period minimum period window, the working mode period), and the current beacon frame sending time.
  • the target station is in a time period of listening to the working channel, wherein the beacon frame sending lag time is optional, and the querying station initiates communication to the target station on the working channel of the target station during the time period.
  • the monitored beacon frame includes the transmission indication bit and is valid
  • the information frame sent by the target station needs to be monitored, and the communication parameter in the information frame is used to establish a communication connection with the target site.
  • the data transmission rate is also included in the beacon frame and both the query site and the target site support the data transmission rate, the query site selects the data transmission rate to perform data communication with the target site; otherwise, the query site uses the base rate and the target site. Data communication.
  • the target site may not be found at the query site, for example, due to a beacon frame transmission error, there is no working time information of the target site or incorrect working time in the beacon frame.
  • the querying station acquires the transmission time axis of the beacon frame according to the transmission time of the current beacon frame, the beacon frame transmission lag time, and the beacon frame transmission period, wherein the beacon frame transmission lag time is optional information.
  • the new beacon frame sent by the target frame is monitored, and the communication is started according to the working time information therein until the target station can be found.
  • the difference between this embodiment and the sixth embodiment is that the duration of the target station listening to the working channel is represented by the beacon frame transmission period instead of the absolute time.
  • Example 11 the duration of the target station listening to the working channel is represented by the beacon frame transmission period instead of the absolute time.
  • the target station periodically monitors the working channel, the time information of the target station starts to monitor the working channel, and the representation manner of the beacon frame number, and the duration information of the target station listening to the working channel uses the beacon frame period.
  • Step S1101 The target station sends a beacon frame, where the beacon frame includes working time information.
  • the beacon frame includes:
  • the items C, G, and H are optional information
  • the items A, C, D, and E are the working time information
  • the working time information indicates time information of the target station listening to the working channel, including when to start monitoring. The working channel and how long it lasts.
  • Step S1102 The target station monitors the working channel at a predetermined time specified by the working time information.
  • Step S1103 The querying station listens to the beacon frame sent by the target station on its working channel. The same as step S503.
  • Step S1104 The querying station initiates communication to the target site according to the working time information.
  • the querying station according to the working time information (ie, the beacon frame transmission lag time, the beacon frame number SeqNo, the working period minimum period window, the working time period number N), and the current beacon frame transmission time,
  • the time period during which the target station is listening to the working channel can be known, wherein the beacon frame sending lag time is optional, and the querying station initiates communication to the target station on the working channel of the target station during the time period.
  • the monitored beacon frame includes the transmission indication bit and is valid
  • the information frame sent by the target station needs to be monitored, and the communication parameter in the information frame is used to establish a communication connection with the target site.
  • the data transmission rate is also included in the beacon frame and both the query site and the target site support the data transmission rate, the query site selects the data transmission rate to perform data communication with the target site; otherwise, the query site uses the base rate and the target site. Data communication.
  • the query site may not find the target site, for example, because the beacon frame transmission error causes no work time information of the target site or incorrect working time information in the beacon frame, at this time, the query site is based on the current beacon.
  • the transmission time of the frame, the beacon frame transmission lag time, and the beacon frame transmission period acquire the transmission time axis of the beacon frame, wherein the beacon frame transmission lag time is optional information, and the new target transmitted by the target frame is monitored according to the time axis.
  • the beacon frame according to the working time information therein, initiates communication to the target site until the target site can be found.
  • the difference between this embodiment and the seventh embodiment is that the duration of the target station listening to the working channel is represented by the beacon frame transmission period instead of the absolute time.
  • Example 12 the duration of the target station listening to the working channel is represented by the beacon frame transmission period instead of the absolute time.
  • the target station no longer periodically monitors the working channel, and the time information of the target station starting to monitor the working channel and the duration information of the target station listening working channel are all using the beacon.
  • Step S1201 The target station sends a beacon frame, where the beacon frame includes working time information.
  • the beacon frame includes:
  • A beacon frame transmission period
  • the items B, G, and H are optional information, and the items B, C, D, and E are the working time information. Since the working time information does not include the time period in which the target station monitors the working channel, only the expected working hours are included. For example, if the expected working time is 2, the working period of one of the listening working channels is different from the current beacon frame. 2 beacon frame transmission period, the other working channel of the listening working channel has 6 beacon frame transmission periods from the current beacon frame, then the working time Offset has two values, one is 2, one is 6, The working time information is valid during the time period indicated by the expected number of working hours. Therefore, only the time information of the target station's recent monitoring of the working channel can be known from the working time information.
  • Step S1202 The target station monitors the working channel at a predetermined time specified by the working time information.
  • Step S1203 The querying station listens to the beacon frame sent by the target station on its working channel.
  • Step S1204 The querying site initiates communication to the target site according to the working time information.
  • the querying station may be configured according to the working time information (ie, the beacon frame sending delay time, the working time period Offset, the working period minimum period window, the expected working time number), and the current beacon frame sending time, Know when the target site is listening to the working channel
  • the querying site initiates communication to the target site on the working channel of the target site during the time period.
  • the monitored beacon frame includes the transmission indication bit and is valid
  • the information frame sent by the target station needs to be monitored, and the communication parameter in the information frame is used to establish a communication connection with the target site.
  • the data transmission rate is also included in the beacon frame and both the query site and the target site support the data transmission rate, the query site selects the data transmission rate to perform data communication with the target site; otherwise, the query site uses the base rate and the target site. Data communication.
  • the querying station If the query site needs to communicate with the target site, there is no working time information of the target station in the beacon frame, or no target site is in the listening working channel within the time range indicated by the expected working hours. Time period, when the working time information is outdated, the querying station does not find the target station, then the querying station obtains the sending of the beacon frame according to the information such as the current beacon frame sending time, the beacon frame sending lag time, and the beacon frame sending period.
  • the time axis wherein the beacon frame transmission lag time is optional information, and the new beacon frame sent by the target frame is monitored according to the time axis, and the communication is initiated to the target station according to the working time information therein until the target station can be found.
  • the difference between this embodiment and the embodiment 9 is that the duration of the target station listening to the working channel is represented by the beacon frame transmission period instead of the absolute time.
  • the time information of the target station starting to monitor the working channel is expressed in absolute time.
  • the duration information of the target station listening working channel is expressed by the beacon frame period, or the target station no longer periodically monitors the working channel, and the time information of the target station starting to monitor the working channel is expressed by the absolute time, the target station.
  • the duration information of the monitoring working channel, the representation manner of the beacon frame period, and the like, and the working time information only need to set corresponding parameters, and these combination schemes are all within the protection scope of the present invention.
  • Example 13 Example 13:
  • the embodiment provides a communication system between the target site and the query site.
  • the communication system includes the target site 131 and the query site 132 described in the fourth embodiment.
  • the station 131 sends a beacon frame containing working time information
  • the querying site 132 listens to the beacon frame
  • the target station 131 starts listening to the working channel at the designated working time
  • the querying station 132 monitors the working time included in the beacon frame according to the monitoring.
  • the information may be initiated to the target site during the period in which the target site is in the state of listening to the working channel.
  • the target station 131 since the target station 131 does not need to listen to the channel at all times, the channel monitoring efficiency is improved.
  • the beacon frame sent by the target station includes working time information of the target station, and after the querying site listens to the beacon frame, it can obtain when the target site starts to monitor.
  • the working channel and the duration of the information when the querying site needs to establish a communication connection with the target site, the communication may be initiated to the target site during the time period in which the target site is listening to the working channel, by using the embodiment of the present invention, the target site There is no need to start listening to the working channel immediately after each beacon frame transmission, and it is only necessary to monitor the working channel at a predetermined time, which improves the monitoring efficiency of the target site.
  • the beacon frame further includes working channel information of the target station, and the target station sends a beacon frame to the channel supported by the target station, and the target site may also be found at the query site of other channels, when the query site needs and the target
  • the station establishes a communication connection, it only needs to adjust its working channel to the working channel of the target site, and initiate communication to the target site on the working channel of the target site, which can greatly improve the probability of the target site being discovered.

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Abstract

本发明适用于通信技术领域,提供一种目标站点的通讯方法及装置、查询站点的通讯方法及装置、一种目标站点和查询站点间的通讯系统,所述目标站点的通讯方法包括:目标站点发送信标帧,所述信标帧包括目标站点的工作时间信息;目标站点在所述工作时间信息指定的在预定时刻监听工作信道。本发明通过在现有信标帧基础上增加有关目标站点监听工作信道的工作时间信息,这样查询站点监听到信标帧后,在目标站点处于监听工作信道的时间段内,向目标站点发起通信,这样目标站点无需全时段监听工作信道,只在预定的时刻监听工作信道即可,这样目标站点监听效率高,比较节能。

Description

一种目标站点、 查询站点、 通讯系统以及通讯方法 本申请要求于 2012 年 3 月 26 日提交中国专利局、 申请号为 201210082628.1、 发明名称为"一种目标站点、 查询站点、 通讯系统以及通 讯方法 "的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域 本发明涉及无线通讯技术领 i或, 具体涉及一种目标站点、 查询站点、 通讯系统以及通讯方法。
背景技术
WLAN ( Wireless Local Area Networks, 无线局域网) 的基本组成部分 是 BSS ( Basic Service Set, 基本服务集), BSS由在某一特定覆盖区域内, 具有某种关联的 STA ( Station, 站点)组成, 在 BSS网络中具有专职管理 BSS的中央站点被称为 AP ( Access point, 接入点), 而在该网络中的其它 站点都与它相关联。 此外多个 BSS网络通过 DS ( Distribution System, 分布 系统)相互连接即可组成 ESS ( Express Service Set, 扩展服务集), 若 BSS 网络中缺失 AP,站点间也可以自组网络而相互直接通信,此 BSS网络称为 IBSS ( Independent Basic Service Set, 独立基本服务集)。 为了使得网络中各 站点在预连接状态、 低功耗情况下, 不通过接入站点(如 AP ) 能够直接相 互获取信息, 为此提出了一个 NAN ( Neighbor Awareness Network,邻近识 别网络) 项目, 在该项目中, 网络中的某个站点 (称为查询站点) 与其他 站点 (称为目标站点 )通讯之前, 查询站点需要知道网络中存有哪些目标 站点, 通常通过信标帧发送发现机制获知目标站点的存在, 信标帧是一种 管理帧, 在网络中用于协调目标站点与周围站点间的同步, 里面包括一些 时序以及无线网络信息, 目标站点在自己的工作信道内, 以随机时间为起 点, 按照一定的信标帧周期(取值范围 20ms到 1000ms, 预设值为 100ms ) 发送信标帧, 查询站点监听信标帧, 收到信标帧后即可认定目标站点存在, 并可根据需要向目标站点发起通信。 但是现有信标帧发送技术中, 目标站 点发送信标帧后, 不清楚查询站点何时会向自己发起通信。
发明内容 本发明实施例提供一种目标站点的通讯方法, 用以解决现有信标帧发 送技术中目标站点发送信标帧后需要全时段监听信道而导致的监听效率低 下、 不节能的技术问题。
本发明实施例提供了一种目标站点的通讯方法, 所述方法包括下述步 骤:
目标站点发送信标帧, 所述信标帧包括目标站点的工作时间信息; 目标站点在所述工作时间信息指定的在预定时刻监听工作信道。
本发明实施例提供了一种查询站点的通讯方法, 所述方法包括下述步 骤:
查询站点在其工作信道上监听目标站点发送的信标帧, 所述信标帧包 括目标站点的工作时间信息。
查询站点根据所述工作时间信息, 向目标站点发起通信。
本发明实施例提供了一种目标站点, 所述目标站点包括:
信标帧发送单元, 用于目标站点发送信标帧, 所述信标帧包括目标站 点的工作时间信息;
信道监听单元, 用于目标站点在所述工作时间信息指定的在预定时刻 监听工作信道。
本发明实施例提供了一种查询站点, 所述查询站点包括:
信标帧监听单元, 用于查询站点在其工作信道上监听目标站点发送的 信标帧, 所述信标帧包括目标站点的工作时间信息。
通信连接单元, 用于查询站点根据所述工作时间信息, 向目标站点发 起通信。
本发明实施例提供了一种目标站点与查询站点间的通讯系统, 所述系 统包上述的目标站点和查询站点。
由上述技术方案可知, 本发明实施例通过在现有的信标帧的基础上增 加有关目标站点监听工作信道的工作时间信息, 这样查询站点监听到信标 帧后, 根据信标帧中包含的工作时间信息, 在目标站点处于监听工作信道 的时间段内, 向目标站点发起通信。 这样目标站点无需全时段监听工作信 道, 只在预定的时刻进入开始监听工作信道即可, 这样监听效率高, 比较 节能。
附图说明 图 1是本发明第一实施例提供的目标站点通讯方法流程图;
图 2是本发明第二实施例提供的查询站点通讯方法流程图;
图 3是本发明第三实施例提供的目标站点的结构方框图;
图 4是本发明第四实施例提供的查询站点的结构方框图;
图 5是本发明第十三实施例提供的目标站点与查询站点的通讯系统的 结构示意图。
具体实施方式 为了使本发明的目的、 技术方案及优点更加清楚明白, 以下结合附图 及实施例, 对本发明进行进一步详细说明。 应当理解, 此处所描述的具体 实施例仅仅用以解释本发明, 并不用于限定本发明。
现有信标帧发送技术中, 由于目标站点无法知晓查询站点向自己发起 通信的具体时刻, 因此, 目标站点在发送两个信标帧之间的时间段内, 需 要全时段监听信道, 这样由于目标站点接收查询站点发起通信的时间不定 而且很短, 现有的全时段监听信道的效率很低、 不节能。
为了解决上述技术问题, 下面通过具体实施例来进行说明本发明的技 术方案。
实施例一:
图 1 示出了本发明第一实施例提供的一种目标站点通讯方法的流程, 为了便于说明仅示出了与本发明实施例相关的部分。
步骤 S101 , 目标站点发送信标帧, 所述信标帧包括目标站点的工作时 间信息。
在现有技术中, 由于目标站点发送的信标帧中不包括目标站点的工作 时间信息, 目标站点在发送完毕信标帧后, 立即开始监听工作信道直到目 标站点发送下一信标帧, 这样目标站点监听效率低下, 不够节能。 为了使 得查询站点知晓目标站点何时开始监听工作信道, 在实现本步骤前, 需要 确定好目标站点的工作时间信息, 即目标站点监听工作信道的时间信息, 包括何时开始监听工作信道并持续多长时间等, 所述工作时间信息包含在 目标站点发送的信标帧中。 在本发明实施例中, 作为优选的, 所述的信标 帧包括发送周期信息, 目标站点按照所述发送周期发送信标帧。 此外, 需 要说明的是, 本发明实施例所述的发送信标帧的方式包括, 广播信标帧、 组播信标帧和单播信标帧等。
在本发明实施例中, 所述工作时间信息是目标站点监听工作信道的时 间信息, 包括目标站点开始监听工作信道的时刻信息, 以及目标站点监听 工作信道的持续时间信息, 需要说明的是, 若所述持续时间信息的没有具 体值, 那么在本实施例中, 目标站点监听工作信道的持续时间为默认值, 比如可以为半个信标帧发送周期等。 在具体实现时, 所述时刻信息可以釆 用绝对时间、 信标帧周期数或信标帧编号表示, 所述持续时间信息可以釆 用绝对时间或信标帧周期数来表示。 所述绝对时间是指, 釆用的时间段的 长度是定值, 与信标帧的发送周期无关, 这里具体为, 目标站点开始监听 工作信道的时刻与当前发送信标帧时刻之间的时间段是定值, 以及目标站 点监听工作信道的时间段的长度也是定值; 所述信标帧周期数是指, 时间 段长度与信标帧的发送周期有关, 为信标帧的发送周期的若干倍, 在这里 具体为, 目标站点开始监听工作信道的时刻与当前发送信标帧时刻之间的 时间段是信标帧发送周期的若干倍, 以及目标站点监听工作信道的时间段 的长度也是信标帧发送周期的若干倍; 所述的信标帧编号是指, 按照发送 时间顺序对信标帧进行编号, 并将得到的编号对定值 N取余, 当余数为一 预设值 M时, 在发送该信标帧后, 目标站点立即开始监听工作信道。 进一 步的, 所述工作时间信息还包括目标站点周期性监听工作信道的时间周期, 表明了所述的工作时间信息是长期有效的, 若工作时间信息中不包括所述 时间周期, 那么所述目标站点开始监听工作信道的时刻信息只是在预期的 时间段内有效。 对于上述实现不同方案的信标帧需要釆用不同的参数, 具 体需要哪些参数在后续实施例中进行具体描述。
进一步的, 所述信标帧还包括目标站点的工作信道信息, 目标站点在 其支持的信道中发送信标帧, 所述的支持的信道可以是传输信道中的一条 或几条信道, 或者是所有的传输信道。 在通讯网络中, 各站点都能动态地 改变自己的工作信道, 但在每个时刻只有一条工作信道, 由于现有的信标 帧不含目标站点的工作信道信息, 那么目标站点只能在当前工作信道内发 送信标帧, 该信道内的查询站点可以根据需要向所述目标站点发起通信, 而位于其他信道的查询站点就监听不到所述信标帧消息, 若目标站点同时 向其他多个信道发送信标帧, 由于位于这些信道的查询站点不知道目标站 点的工作信道, 因此就无法向所述目标站点发起通信, 这样就减小了目标 站点被查询站点发现的概率。 为此, 在本实施例中, 信标帧还包括目标站 点的工作信道信息, 目标站点在多个信道中发送信标帧, 此时位于其他信 道(非所述工作信道) 的查询站点就可以获取到目标站点的工作信道, 当 这样的查询站点需要向所述目标站点发起通信时, 更改自己的信道到所述 工作信道即可, 这样所述目标站点就可以被所有的查询站点发现, 增大了 目标站点被发现的概率。 为了便于理解现列举简单一例, 假设站点可以工 作在 1ΚΗζ、 2KHz、 3KHz频段上, 若目标站点工作在 2KHz的工作信道上 并向所有的信道发送信标帧, 那么其他频段(1ΚΗζ、 3KHz频段)上的查 询站点也可以监听到此信标帧, 若这些频段上的查询站点需要与所述目标 站点通讯, 将其工作频段调整到 2KHz, 在 2KHZ的工作信道上向目标站点 发起通信即可, 由此可以看出, 目标站点可以被 1ΚΗζ、 2KHz、 3KHz频段 上的查询站点发现, 增大了目标站点被发现的概率。
步骤 S102, 目标站点在所述工作时间信息指定的时刻监听工作信道。 在本步骤中, 由于之前已经确定好目标站点处于监听工作信道的时间 段信息, 目标站点只需在工作信息指定的时刻开始监听工作信道即可, 所 述指定的时刻是工作时间信息中所包含的目标站点开始监听工作信道的时 刻点。 目标站点在监听工作信道的时间段内可以接受来自于查询站点的通 信请求。 在本实施例中, 通过设置空闲计时器来记录目标站点监听工作信 道的持续时间, 具体实现时, 可以通过记录信道空闲状态时间、 记录目标 站点的空闲时间来实现所述空闲计时器, 当空闲计时器失效时, 目标站结 束监听。
进一步的, 所述信标帧还包括发送指示位, 所述发送指示位用于指示 目标站点发送信息帧。 若该指示位有效, 则目标站点开始监听工作信道时, 在其工作信道上发送信息帧, 所述信息帧包括目标站点的连接信息和 /或服 务信息。 在具体实现时, 将信标帧中的发送指示位 Broadcast Bit置 1 , 表明 该指示位有效, 在目标站点开始监听工作信道时, 在其工作信道上发送信 息帧, 所述信标帧包括目标站点的连接信息和 /或服务信息, 所述连接信息 主要是目标站点与查询站点间进行通信时相关的工作参数信息, 所述服务 信息主要是目标站点需要发送的特定内容, 譬如对于一个肯德基的服务目 标站点, 该目标站点在开始监听工作信道时, 可以选择在工作信道内发送 包含有特价食品的服务信息, 查询站点对目标站点有了进一步的了解。
进一步的, 所述信标帧还包括数据传输速率信息, 目标站点与查询站 点均支持所述数据传输速率, 目标站点以该数据传输速率与查询站点进行 数据通信。 若信标帧中不包括数据传输速率信息, 或者, 目标站点或查询 站点不支持所述数据传输速率, 则目标站点与查询站点以基础速率进行数 据通信。
在本发明实施例中, 由于目标站点发送的信标帧中包含有工作时间信 息, 该工作时间信息包含了目标站点监听工作信道的工作时间段的相关信 息, 目标站点只需在规定的时间段监听工作信道即可, 这样由于目标站点 无需全时段监听工作信道, 因此通过本发明技术方案, 大大提高了信道监 听效率, 而且还比较节能。 实施例二:
图 2示出了本发明第二实施例提供的一种查询站点通讯方法的流程, 为了便于说明仅示出了与本发明实施例相关的部分。
所述通讯方法包括下述步骤:
步骤 S201 , 查询站点在其工作信道上监听目标站点发送的信标帧, 所 述信标帧包括目标站点的工作时间信息。
在本发明实施例中, 每个查询站点都有自己的工作信道, 查询站点在 各自的工作信道上监听信标帧, 监听到信标帧后将其保存。 通常查询站点 可由事件触发或周期性监听信标帧。 同样, 本发明实施例所述的目标站点 发送的信标帧的方式包括, 广播信标帧、 组播信标帧和单播信标帧等。
步骤 S202, 查询站点才艮据所述工作时间信息, 向目标站点发起通信。 在本发明实施例中, 所述的信标帧包括目标站点的工作时间信息, 即 目标站点监听工作信道的时间信息, 包括目标站点何时开始监听工作以及 持续多长时间等, 进一步, 所述工作时间信息还包括目标站点周期性监听 工作信道的时间周期。 查询站点需要与目标站点进行通信连接时, 根据所 述工作时间信息, 在目标站点处于监听工作信道的时间段内, 向目标站点 发起通信即可。
进一步的, 所述信标帧还包括目标站点的工作信道信息, 目标站点会 在其支持的信道发送信标帧, 所述支持的信道可以是传输信道中的一条或 几条信道, 或者是所有的传输信道, 目标站点工作信道外的查询站点也会 监听到这个信标帧, 若这些查询站点需要与目标站点进行通信连接时, 将 自己的工作信道到调整到所述目标站点的工作信道上, 这样就可以在目标 站点处于监听工作信道的时间段内, 在目标站点的工作信道向目标站点发 起通信。
需要说明的是, 实现本步骤的前提是查询站点能够发现目标站点, 但 是在实际情况中, 查询站点可能没有发现目标站点, 例如, 由于信标帧发 送过程中出现传输错误, 查询站点监听到的信标帧中不包括目标站点的工 作时间信息, 或者所述工作时间信息有误, 在工作时间信息指定的时间段 内, 目标站点并没有监听其工作信道, 这样查询站点就没有发现目标站点; 或者, 信标帧中包含的目标站点的工作时间信息, 在查询站点准备与目标 进行通信连接时已经过时, 那么此时查询站点也就发现不了目标站点。 当 遇到这些类似的情况导致查询站点没有发现目标站点时, 作为本发明实施 例优选的实施方式, 所述信标帧包括目标站点发送信标帧的发送周期信息, 查询站点根据所述发送周期信息以及当前信标帧的发送时刻, 在下一个信 标帧的发送时刻, 重新监听新的信标帧, 若查询站点还是没有发现目标站 点, 则再次监听新的信标帧直至能够发现目标站点。
进一步的, 所述查询站点监听到的信标帧中还包括发送指示位, 当该 指示位有效时, 通常该指示位置为 1 , 则查询站点需要与目标站点进行通信 连接时, 在目标站点的工作信道上监听目标站点发送的信息帧, 所述信息 帧包括目标站点的连接信息和 /或服务信息。 所述连接信息主要是目标站点 与查询站点进行通信时相关的工作参数信息, 譬如信息传输的信号强度等, 所述服务信息主要是目标站点需要发送的特定内容, 譬如对于一个肯德基 的服务目标站点, 该目标站点在开始监听工作信道时, 可以选择在工作信 道内发送包含有特价食品的服务信息。
进一步的, 所述查询站点监听到的信标帧中还包括数据传输速率信息, 所述查询站点和目标站点均支持所述数据传输速率, 查询站点以该数据传 输速率与目标站点进行数据通信, 这样可以通过更高的速率传输数据。 若 信标帧中不包括所述数据传输速率信息, 或者, 查询站点或目标站点不支 持所述数据传输速率, 则查询站点以基础速率与目标站点进行数据通信。
在本发明实施例中, 查询站点监听目标站点发送的信标帧, 所述信标 帧中包含有工作时间信息, 该工作时间信息包含了目标站点监听工作信道 的工作时间段的相关信息, 当查询站点需要向目标站点发起通信时, 只需 在目标站点处于监听信道的工作时间段内向其发起通信即可, 这样查询站 点只需在规定时间段向目标站点发起通信, 而目标站点无需全时段监听工 作信道, 因此通过本发明技术方案, 大大提高了信道监听效率, 而且还比 较节能。 实施例三:
图 3 示出了本发明第三实施例提供的一种目标站点的结构方框图, 为 了便于说明仅示出了与本发明实施例相关的部分。
一种目标站点, 包括:
信标帧发送单元 301 , 用于目标站点发送信标帧, 所述信标帧包括目标 站点的工作时间信息;
信道监听单元 302 ,用于目标站点在所述工作时间信息指定的时刻开始 监听工作信道。
在本发明实施例中, 现有目标站点在发送信标帧后, 由于不知道查询 站点何时向自己发送连接请求, 因此需要全时段监听信道, 这种信道监听 方式效率低、 不够节能。 而本发明实施例中, 首先需要确定好目标站点的 工作时间信息, 所述工作时间信息包含在目标站点发送的信标帧中, 所述 工作时间信息为目标站点处于监听工作信道的时间信息, 包括目标站点开 始监听工作信道的时刻信息, 以及目标站点监听工作信道的持续时间信息, 需要说明的是, 若所述持续时间信息的没有具体值, 那么在本实施例中, 目标站点监听工作信道的持续时间为默认值, 比如可以为半个信标帧发送 周期等。 在具体实现时, 所述时刻信息可以釆用绝对时间、 信标帧周期数 或信标帧编号表示, 所述持续时间可以釆用绝对时间或信标帧周期数来表 示。 所述绝对时间、 信标帧周期与信标帧编号在步骤 S101中已具体描述, 此处不再赘述。 在本实施例中, 作为优选的, 所述信标帧还包括发送周期 信息, 目标站点按照所述发送周期发送信标帧。
进一步的, 所述信标帧还包括目标站点的工作信道信息, 目标站点在 其支持的信道中发送信标帧 , 所述支持的信道可以是传输信道中的一条或 几条信道, 或者是所有的传输信道。 在通讯网络中, 各站点都能动态地改 变自己的工作信道, 但在每个时刻只有一条工作信道, 由于现有的信标帧 不含目标站点的工作信道信息, 那么目标站点只能在当前工作信道内发送 信标帧, 该信道内的查询站点可以根据需要向所述目标站点发起通信, 而 位于其他信道的查询站点就无法监听到所述信标帧消息, 若目标站点同时 向其他多个信道发送信标帧, 由于位于这些信道的查询站点不知道目标站 点的工作信道, 因此就无法向所述目标站点发起通信, 这样就减小了目标 站点被查询站点发现的概率。 为此, 在本实施例中, 信标帧还包括目标站 点的工作信道信息, 目标站点在多个信道中发送信标帧, 此时位于其他信 道(非所述工作信道) 的查询站点就可以获取到目标站点的工作信道, 当 这样的查询站点需要向所述目标站点发起通信时, 更改自己的信道到所述 工作信道即可, 这样所述目标站点就可以被所有的查询站点发现, 增大了 目标站点被发现的概率。
进一步的, 所述信标帧还包括数据传输速率信息, 所述目标站点与查 询站点均支持所述数据传输速率, 目标站点以该数据传输速率与查询站点 进行数据通信, 若信标帧中不包括所述数据传输速率信息, 或者, 目标站 点或查询站点不支持所述数据传输速率, 则目标站点与查询站点以基础速 率进行数据通信。
进一步的, 所述信标帧还包括发送指示位, 所述发送指示位用于指示 目标站点发送信息帧。 若该指示位有效, 则目标站点开始监听工作信道时, 在其工作信道上发送信息帧, 所述信息帧包括目标站点的连接信息和 /或服 务信息。 通常所述指示位置 1有效。
在本发明实施例中, 由于之前已经确定好目标站点处于监听工作信道 的时间段信息, 信道监听单元控制目标站点只需在预定的时刻开始监听工 作信道即可。 实施例四:
图 4示出了本发明第四实施例提供的一种目标站点的结构方框图, 为 了便于说明仅示出了与本发明实施例相关的部分。
一种查询站点, 包括:
信标帧监听单元 401,用于查询站点在其工作信道上监听目标站点发送 的信标帧, 所述信标帧包括目标站点的工作时间信息。
通信连接单元 402 ,用于查询站点根据所述工作时间信息向目标站点发 起通信。
在本发明实施例中, 每个查询站点都有自己的工作信道, 查询站点在 各自的工作信道上监听信标帧, 监听到信标帧后将其保存。 通常查询站点 可由事件触发或周期性监听信标帧。 所述的信标帧包括目标站点的工作时 间信息, 即目标站点监听工作信道的时间信息, 包括目标站点何时开始监 听工作以及持续多长时间等, 进一步, 所述工作时间信息还包括目标站点 周期性监听工作信道的时间周期。 查询站点根据所述时间信息, 在目标站 点处于监听工作信道的时间段内, 向目标站点发送连接请求即可。
进一步的, 所述信标帧还包括目标站点的工作信道信息, 目标站点会 向其支持的信道发送信标帧 , 所述支持的信道可以是传输信道中的一条或 几条信道, 或者是所有的传输信道, 即使处于所述工作信道外的查询站点 也会监听到这个信标帧, 若这些查询站点需要与目标站进行通信连接时, 将自己的工作信道到调整到所述目标站点的工作信道上, 这样就可以在目 标站点处于监听工作信道的时间段内, 在目标站点的工作信道向目标站点 发起通信。
另外, 在实际情况中, 可能会遇到查询站点没有发现目标站点的情况, 作为本发明实施例优选的实施方式, 所述信标帧包括目标站点发送信标帧 的发送周期信息, 查询站点根据所述发送周期信息以及当前信标帧的发送 时刻, 在下一个信标帧发送时刻, 重新监听新的信标帧, 若查询站点还是 没有发现目标站点, 则再次监听新的信标帧直至能够发现目标站点。
进一步的, 所述查询站点监听到的信标帧中还包括发送指示位, 当该 指示位有效时, 通常该指示位置为 1 , 则查询站点需要与目标站点进行通信 连接时, 在目标站点的工作信道上监听目标站点发送的信息帧, 所述信息 帧包括目标站点的连接信息和 /或服务信息。
进一步的, 所述查询站点监听到的信标帧中还包括数据传输速率信息, 所述查询站点与目标站点均支持所述数据传输速率查询站点以该数据传输 速率与目标站点进行数据通信, 若信标帧中不包括所述数据传输速率信息, 或者, 查询站点或目标站点不支持所述数据传输速率, 则查询站点以基础 速率与目标站点进行数据通信。 这样可以通过更高的速率传输数据。 从上述几个实施例可看出, 目标站点与查询站点的工作方式取决于目 标站点发送的信标帧中所包含的工作时间信息, 包括目标站点开始监听工 作信道的时刻信息, 以及目标站点监听工作信道的持续时间信息, 进一步, 所述工作时间信息还包括目标站点周期性监听工作信道的时间周期。 其中, 所述时刻信息可以釆用绝对时间、 信标帧周期数或信标帧编号表示, 所述 持续时间信息可以釆用绝对时间或信标帧周期数来表示。 这些信息具体体 现在信标帧包含的参数中, 在下面的实施例中, 通过选择不同的信标帧参 数来描述目标站点与查询站点之间的通信。 实施例五:
本实施例中, 目标站点周期性监听工作信道, 目标站点开始监听工作 信道的时刻信息以及目标站点监听工作信道的持续时间信息均釆用绝对时 间的表现方式。
步骤 S501、 目标站点发送信标帧, 所述信标帧包括工作时间信息。 在本实施例中, 所述信标帧包括:
A、信标帧发送周期,指的是相邻两次信标帧预定发送时间的时间间隔;
B、 信标帧发送滞后时间, 指的是本次信标帧实际发送时间和预定发送 时间的差值;
C、 工作时刻 Offset, 指的是本次信标帧实际或预定发送时刻与目标站 点下一次开始监听工作信道时刻的时间间隔, 0值表示正在目标站点正在监 听;
D、 工作时段最小窗口, 指的是目标站点监听工作信道的最短的持续时 间, 0表示全时段监听;
E、 工作模式周期, 指的是相邻两次开始监听工作信道的时间间隔;
F、 工作信道, 指的是目标站所监听的信道;
G、 数据传输速率, 指的是目标站点和查询站点间数据传输速率; H、发送指示位, 表明该只指示位置 1表示目标站点在开始监听工作信 道时发送信息帧;
其中, B、 G、 H项为可选信息, B、 C、 D、 E项为所述的工作时间信 息, 所述工作时间信息表明了目标站点监听工作信道的时间信息, 包括何 时开始监听工作信道以及持续多长时间等。
步骤 S502, 目标站点在所述工作时间信息指定的时刻监听工作信道。 在本实施例中, 所述的预定时刻为工作时间信息包含的目标站点开始 监听工作信道的时刻点, 譬如在本实施例中通过工作时刻 Offset, 即可知 晓下一次目标站点开始监听工作信道的时刻点。
步骤 S503 , 查询站点在其工作信道上监听目标站点发送的信标帧。 在本实施例中, 查询站点由事件触发或周期性监听工作信道。
步骤 S504, 查询站点才艮据所述工作时间信息, 向目标站点发起通信。 在本实施例中, 查询站点根据所述工作时间信息 (即信标帧发送滞后 时间、 工作时刻 offset, 工作时段最小窗口、 工作模式周期)以及当前信标 帧的发送时刻, 即可知晓目标站点处于监听工作信道的时间段, 其中信标 帧发送滞后时间为可选项, 查询站点在该时段内, 在目标站点的工作信道 上向目标站点发起通信。
如果监听到的信标帧中包括发送指示位且有效, 则查询站点需要与目 标站点进行通信连接时, 需监听目标站点发送的信息帧, 并以此信息帧中 通信参数与目标站点建立通信连接; 如果信标帧中还包括数据传输速率且 查询站点和目标站点均支持所述数据传输速率, 则查询站点选用该数据传 输速率与目标站点进行数据通信, 否则, 查询站点以基础速率与目标站点 进行数据通信。
此外还需要考虑到查询站点可能没有发现目标站点, 譬如由于信标帧 传输错误, 造成信标帧中没有目标站点的工作时间信息或是错误的工作时 间信息, 此时, 查询站点根据当前信标帧的发送时刻、 信标帧发送滞后时 间以及信标帧发送周期获取信标帧的发送时间轴, 其中信标帧发送滞后时 间为可选信息, 并根据此时间轴监听目标帧发送的新的信标帧, 再次根据 其中的工作时间信息向目标站点发起通信, 直至可以发现目标站点。
需要说明的是, 上述 4个步骤在时间上没有具体的时间先后关系, 目 标站点和查询站点只需在预定时刻作出具体操作即可。 实施例六:
本实施例中, 目标站点周期性监听工作信道, 目标站点开始监听工作 信道的时刻信息釆用信标帧周期数的表现方式, 目标站点监听工作信道的 持续时间信息釆用绝对时间的表现方式。
步骤 S601 , 目标站点发送信标帧, 所述信标帧包括工作时间信息。 在本实施例中, 所述信标帧包括:
A、 信标帧发送周期;
B、 信标帧发送滞后时间;
C、 工作时刻周期 Offset, 指的是本次信标帧实际或预定发送时刻与目 标站点下一次开始监听工作信道时刻的相隔的信标帧周期数, 即当前发送 信标帧后, 经过若干个信标帧周期, 目标站点开始监听工作信道, 0值表示 正在目标站点正在监听;
D、 工作时段最小窗口;
E、 工作模式周期数, 指的是相邻两次开始监听工作信道相隔的信标帧 周期数;
F、 工作信道;
G、 数据传输速率;
H、 发送指示位;
其中, B、 G、 H项为可选信息, B、 C、 D、 E项为所述的工作时间信 息, 所述工作时间信息表明了目标站点监听工作信道的时间信息, 包括何 时开始监听工作信道以及持续多长时间等。
步骤 S602 , 目标站点在所述工作时间信息指定的时刻监听工作信道。 与步骤 S502相同, 此处不再赘述。
步骤 S603 , 查询站点在其工作信道上监听目标站点发送的信标帧。 与 步骤 S503相同, 此处不再赘述。
步骤 S604 , 查询站点才艮据所述工作时间信息, 向目标站点发起通信。 在本实施例中, 查询站点根据所述工作时间信息 (即信标帧发送滞后 时间、 工作时刻周期 Offset, 工作时段最小窗口、 工作模式周期数) 以及 当前信标帧的发送时刻, 即可知晓目标站点处于监听工作信道的时间段, 其中信标帧发送滞后时间为可选项, 查询站点在该时段内, 在目标站点的 工作信道上向目标站点发起通信。
如果监听到的信标帧中包括发送指示位且有效, 则查询站点需要与目 标站点进行通信连接时, 需监听目标站点发送的信息帧, 并以此信息帧中 通信参数与目标站点建立通信连接; 如果信标帧中还包括数据传输速率且 查询站点和目标站点均支持所述数据传输速率, 则查询站点选用该数据传 输速率与目标站点进行数据通信, 否则, 查询站点以基础速率与目标站点 进行数据通信。
此外还需要考虑到查询站点可能没有发现目标站点, 譬如由于信标帧 传输错误, 造成信标帧中没有目标站点的工作时间信息或是错误的工作时 间信息, 此时, 查询站点根据当前信标帧的发送时刻、 信标帧发送滞后时 间以及信标帧发送周期获取信标帧的发送时间轴, 其中信标帧发送滞后时 间为可选信息, 并根据此时间轴监听目标帧发送的新的信标帧, 再次根据 其中的工作时间信息向目标站点发起通信, 直至可以发现目标站点。
综上, 本实施例与实施例五不同之处在于, 查询站点开始监听工作信 道的时刻与信标帧的发送时刻相关联, 即目标站点将在某些特定信标帧发 送后开始监听工作信道。 实施例七:
本实施例中, 目标站点周期性监听工作信道, 标站点开始监听工作信 道的时刻信息釆用信标帧编号的表现方式, 目标站点监听工作信道的持续 时间信息釆用绝对时间的表现方式。
步骤 S701 , 目标站点发送信标帧, 所述信标帧包括工作时间信息。 在本实施例中, 所述信标帧包括:
A、 信标帧编号 SeqNo, 对目标站点发送每个信标帧都将其顺次编号;
B、 信标帧发送周期;
C、 信标帧发送滞后时间;
D、 工作时刻周期数 N, 指信标帧的编号对 N取余, 当余数为某个特 定值时, 目标站点发送该信标帧后开始监听工作信道;
E、 工作时段最小窗口;
F、 工作信道;
G、 数据传输速率;
H、 发送指示位;
其中, C、 G、 H项为可选信息, A、 C、 D、 E项为所述的工作时间信 息, 所述工作时间信息表明了目标站点监听工作信道的时间信息, 包括何 时开始监听工作信道以及持续多长时间等。
步骤 S702, 目标站点在所述工作时间信息指定的在预定时刻监听工作 信道。 与步骤 S502相同, 此处不再赘述。
步骤 S703 , 查询站点在其工作信道上监听目标站点发送的信标帧。 与 步骤 S503相同, 此处不再赘述。
步骤 S704, 查询站点才艮据所述工作时间信息, 向目标站点发起通信。 在本实施例中, 查询站点根据所述工作时间信息 (即信标帧发送滞后 时间、 信标帧编号 SeqNo、 工作时段最小窗口、 工作时刻周期数 N ) 以及 当前信标帧的发送时刻, 即可知晓目标站点处于监听工作信道的时间段, 其中信标帧发送滞后时间为可选项, 查询站点在该时段内, 在目标站点的 工作信道上向目标站点发起通信。
如果监听到的信标帧中包括发送指示位且有效, 则查询站点需要与目 标站点进行通信连接时, 需监听目标站点发送的信息帧, 并以此信息帧中 通信参数与目标站点建立通信连接; 如果信标帧中还包括数据传输速率且 查询站点和目标站点均支持所述数据传输速率, 则查询站点选用该数据传 输速率与目标站点进行数据通信, 否则, 查询站点以基础速率与目标站点 进行数据通信。
此外还需要考虑到查询站点可能没有发现目标站点, 譬如由于信 标帧传输错误, 造成信标帧中没有目标站点的工作时间信息或是错误的工 作时间信息, 此时, 查询站点根据当前信标帧的发送时刻、 信标帧发送滞 后时间以及信标帧发送周期获取信标帧的发送时间轴, 其中信标帧发送滞 后时间为可选信息, 并根据此时间轴监听目标帧发送的新的信标帧, 再次 根据其中的工作时间信息向目标站点发起通信, 直至可以发现目标站点。
综上, 本实施例与实施例六的不同之处在于, 所述目标站点监听工作 信道的时间信息过信标帧编号表示。 实施例八:
本实施例中, 目标站点不再周期性监听工作信道, 目标站点开始监听 工作信道的时刻信息以及目标站点监听工作信道的持续时间信息均釆用绝 对时间的表现方式。
步骤 S801 , 目标站点发送信标帧, 所述信标帧包括工作时间信息。 在本实施例中, 所述信标帧包括:
A、 信标帧发送周期;
B、 信标帧发送滞后时间; C、预期工作时刻数, 表示当前信标帧指示了若干个目标站点监听工作 信道的工作时段;
D、 工作时刻 Offset;
E、 工作时段最小窗口;
F、 工作信道;
G、 数据传输速率;
H、 发送指示位;
其中, B、 G、 H项为可选信息, B、 C、 D、 E项为所述的工作时间信 息。 由于工作时间信息中不包括目标站点监听工作信道的时间周期, 只是 包括了预期工作时刻数, 例如, 若所述预期工作时刻数为 2, 其中一个监听 工作信道的工作时段距离当前信标帧有 2个信标帧发送周期, 另一个监听 工作信道的工作时段距离当前信标帧有 6个信标帧发送周期, 那么此时工 作时刻 Offset有两个值, 一个是 2个信标帧发送周期的时间长度, 一个是 6个信标帧发送周期的时间长度,在所述预期工作时刻数指示的时间段内工 作时间信息有效。 因此从工作时间信息中只能知晓目标站点近期监听工作 信道的时间信息。
步骤 S802, 目标站点在所述工作时间信息指定的在预定时刻监听工作 信道。
步骤 S803 , 查询站点在其工作信道上监听目标站点发送的信标帧。 步骤 S804, 查询站点才艮据所述工作时间信息, 向目标站点发起通信。 在本实施例中, 查询站点根据所述工作时间信息 (即信标帧发送滞后 时间、 工作时刻 offset, 工作时段最小窗口、 预期工作时刻数)以及当前信 标帧的发送时刻, 即可知晓目标站点处于监听工作信道的时间段, 其中信 标帧发送滞后时间为可选项, 查询站点在该时段内, 在目标站点的工作信 道上向目标站点发起通信。
如果监听到的信标帧中包括发送指示位且有效, 则查询站点需要与目 标站点进行通信连接时, 需监听目标站点发送的信息帧, 并以此信息帧中 通信参数与目标站点建立通信连接; 如果信标帧中还包括数据传输速率且 查询站点和目标站点均支持所述数据传输速率, 则查询站点选用该数据传 输速率与目标站点进行数据通信, 否则, 查询站点以基础速率与目标站点 进行数据通信。
若所述查询站点需要与目标站点进行通信连接时, 所述信标帧中没有 目标站点的工作时间信息, 或者在所述预期工作时刻数所指示的时间范围 内, 没有目标站点处于监听工作信道的时间段, 此时工作时间信息过时, 查询站点没有发现目标站点, 那么查询站点根据当前信标帧的发送时刻、 信标帧发送滞后时间以及信标帧发送周期等信息获取信标帧的发送时间 轴, 其中信标帧发送滞后时间为可选信息, 并根据此时间轴监听目标帧发 送的新的信标帧, 再次根据其中的工作时间信息向目标站点发起通信, 直 至可以发现目标站点。
综上, 本实施例与实施例五的不同点在于, 目标站点不再周期性地进 入信道监听状态, 而是动态监听工作信道, 故从信标帧中携带的信息中只 能获知近期的目标站点监听工作信道的时间信息。 实施例九:
本实施例中, 目标站点不再周期性监听工作信道, 目标站点开始监听 工作信道的时刻信息釆用信标帧周期数的表现方式, 目标站点监听工作信 道的持续时间信息釆用绝对时间的表现方式。
步骤 S901 , 目标站点发送信标帧, 所述信标帧包括工作时间信息。 在本实施例中, 所述信标帧包括:
A、 信标帧发送周期;
B、 信标帧发送滞后时间;
C、 预期工作时刻数; D、 工作时刻周期 Offset;
E、 工作时段最小窗口;
F、 工作信道;
G、 数据传输速率;
H、 发送指示位;
其中, B、 G、 H项为可选信息, B、 C、 D、 E项为所述的工作时间信 息。 由于工作时间信息中不包括目标站点监听工作信道的时间周期, 只是 包括了预期工作时刻数, 例如, 若所述预期工作时刻数为 2, 其中一个监听 工作信道的工作时段距离当前信标帧有 2个信标帧发送周期, 另一个监听 工作信道的工作时段距离当前信标帧有 6个信标帧发送周期, 那么此时工 作时刻周期 Offset有两个值, 一个是 2, —个是 6, 在所述预期工作时刻数 指示的时间段内工作时间信息有效。 因此从工作时间信息中只能知晓目标 站点近期监听工作信道的时间信息。
步骤 S902, 目标站点在所述工作时间信息指定的在预定时刻监听工作 信道。
步骤 S903 , 查询站点在其工作信道上监听目标站点发送的信标帧。 步骤 S904, 查询站点才艮据所述工作时间信息, 向目标站点发起通信。 在本实施例中, 查询站点根据所述工作时间信息 (即信标帧发送滞后 时间、 工作时刻周期 Offset, 工作时段最小窗口、 预期工作时刻数) 以及 当前信标帧的发送时刻, 即可知晓目标站点处于监听工作信道的时间段, 其中信标帧发送滞后时间为可选项, 查询站点在该时段内, 在目标站点的 工作信道上向目标站点发起通信。
如果监听到的信标帧中包括发送指示位且有效, 则查询站点需要与目 标站点进行通信连接时, 需监听目标站点发送的信息帧, 并以此信息帧中 通信参数与目标站点建立通信连接; 如果信标帧中还包括数据传输速率且 查询站点和目标站点均支持所述数据传输速率, 则查询站点选用该数据传 输速率与目标站点进行数据通信, 否则, 查询站点以基础速率与目标站点 进行数据通信。
若所述查询站点需要与目标站点进行通信连接时, 所述信标帧中没有 目标站点的工作时间信息, 或者在所述预期工作时刻数所指示的时间范围 内, 没有目标站点处于监听工作信道的时间段, 此时工作时间信息过时, 查询站点没有发现目标站点, 那么查询站点根据当前信标帧的发送时刻、 信标帧发送滞后时间以及信标帧发送周期等信息获取信标帧的发送时间 轴, 其中信标帧发送滞后时间为可选信息, 并根据此时间轴监听目标帧发 送的新的信标帧, 再次根据其中的工作时间信息向目标站点发起通信, 直 至可以发现目标站点。
综上, 本实施例与实施例八的不同点在于, 目标站点在某些特定的信 标帧发送后开始监听工作信道。 实施例十:
本实施例中, 目标站点周期性监听工作信道, 目标站点开始监听工作 信道的时刻信息以及目标站点监听工作信道的持续时间信息均釆用信标帧 周期数的表现方式。
步骤 S1001 , 目标站点在预定时刻进入发送信标帧状态并发送信标帧, 发送完毕后退出该状态。
在本实施例中, 所述信标帧包括:
A、 信标帧发送周期;
B、 信标帧发送滞后时间;
C、 工作时刻周期 Offset;
D、 工作时段最小周期窗口, 表示目标站点监听工作信道的持续的最小 信标帧周期数, 以信标帧周期的若干倍时间来表示监听工作信道的最小持 续时间, 如果该窗口只能为某个特定值, 那么需省去该项; E、 工作模式周期数;
F、 工作信道;
G、 数据传输速率;
H、 发送指示位;
其中, B、 G、 H项为可选信息, B、 C、 D、 E项为所述的工作时间信 息, 所述工作时间信息表明了目标站点监听工作信道的时间信息, 包括何 时开始监听工作信道以及持续多长时间等。
步骤 S1002,目标站点在所述工作时间信息指定的在预定时刻监听工作 信道。
步骤 S1003 , 查询站点在其工作信道上监听目标站点发送的信标帧。 步骤 S1004, 查询站点根据所述工作时间信息, 向目标站点发起通信。 在本实施例中, 查询站点根据监听到的信标帧中相关索引信息获取目 标站点处于监听信道状态的时间轴, 所述相关索引信息包括:
在本实施例中, 查询站点根据所述工作时间信息 (即信标帧发送滞后 时间、 工作时刻周期 Offset, 工作时段最小周期窗口、 工作模式周期) 以 及当前信标帧的发送时刻, 即可知晓目标站点处于监听工作信道的时间段, 其中信标帧发送滞后时间为可选项, 查询站点在该时段内, 在目标站点的 工作信道上向目标站点发起通信。
如果监听到的信标帧中包括发送指示位且有效, 则查询站点需要与目 标站点进行通信连接时, 需监听目标站点发送的信息帧, 并以此信息帧中 通信参数与目标站点建立通信连接; 如果信标帧中还包括数据传输速率且 查询站点和目标站点均支持所述数据传输速率, 则查询站点选用该数据传 输速率与目标站点进行数据通信, 否则, 查询站点以基础速率与目标站点 进行数据通信。
此外还需要考虑到查询站点可能没有发现目标站点, 譬如由于信标帧 传输错误, 造成信标帧中没有目标站点的工作时间信息或是错误的工作时 间信息, 此时, 查询站点根据当前信标帧的发送时刻、 信标帧发送滞后时 间以及信标帧发送周期获取信标帧的发送时间轴, 其中信标帧发送滞后时 间为可选信息, 并根据此时间轴监听目标帧发送的新的信标帧, 再次根据 其中的工作时间信息向目标站点发起通信, 直至可以发现目标站点。
综上, 本实施例与实施例六的不同点在于, 目标站点监听工作信道的 持续时间由信标帧发送周期表示, 而非绝对时间。 实施例十一:
本实施例中, 目标站点周期性监听工作信道, 标站点开始监听工作信 道的时刻信息釆用信标帧编号的表现方式, 目标站点监听工作信道的持续 时间信息釆用信标帧周期的表现方式。
步骤 S1101 , 目标站点发送信标帧, 所述信标帧包括工作时间信息。 在本实施例中, 所述信标帧包括:
A、 信标帧编号 SeqNo;
B、 信标帧发送周期;
C、 信标帧发送滞后时间;
D、 工作时刻周期数 N;
E、 工作时段最小周期窗口;
F、 工作信道;
G、 数据传输速率;
H、 发送指示位;
其中, C、 G、 H项为可选信息, A、 C、 D、 E项为所述的工作时间信 息, 所述工作时间信息表明了目标站点监听工作信道的时间信息, 包括何 时开始监听工作信道以及持续多长时间等。
步骤 S1102,目标站点在所述工作时间信息指定的在预定时刻监听工作 信道。 步骤 S1103 , 查询站点在其工作信道上监听目标站点发送的信标帧。 与 步骤 S503相同。
步骤 S1104, 查询站点根据所述工作时间信息, 向目标站点发起通信。 在本实施例中, 查询站点根据所述工作时间信息 (即信标帧发送滞后 时间、 信标帧编号 SeqNo、 工作时段最小周期窗口、 工作时刻周期数 N ) 以及当前信标帧的发送时刻, 即可知晓目标站点处于监听工作信道的时间 段, 其中信标帧发送滞后时间为可选项, 查询站点在该时段内, 在目标站 点的工作信道上向目标站点发起通信。
如果监听到的信标帧中包括发送指示位且有效, 则查询站点需要与目 标站点进行通信连接时, 需监听目标站点发送的信息帧, 并以此信息帧中 通信参数与目标站点建立通信连接; 如果信标帧中还包括数据传输速率且 查询站点和目标站点均支持所述数据传输速率, 则查询站点选用该数据传 输速率与目标站点进行数据通信, 否则, 查询站点以基础速率与目标站点 进行数据通信。
此外还需要考虑到查询站点可能没有发现目标站点, 譬如由于信 标帧传输错误, 造成信标帧中没有目标站点的工作时间信息或是错误的工 作时间信息, 此时, 查询站点根据当前信标帧的发送时刻、 信标帧发送滞 后时间以及信标帧发送周期获取信标帧的发送时间轴, 其中信标帧发送滞 后时间为可选信息, 并根据此时间轴监听目标帧发送的新的信标帧, 再次 根据其中的工作时间信息向目标站点发起通信, 直至可以发现目标站点。
综上, 本实施例与实施例七的不同点在于, 目标站点监听工作信道的 持续时间由信标帧发送周期表示, 而非釆用绝对时间。 实施例十二:
本实施例中, 目标站点不再周期性监听工作信道, 目标站点开始监听 工作信道的时刻信息和目标站点监听工作信道的持续时间信息均釆用信标 帧周期数的表现方式。
步骤 S1201 , 目标站点发送信标帧, 所述信标帧包括工作时间信息。 在本实施例中, 所述信标帧包括:
A、 信标帧发送周期;
B、 信标帧发送滞后时间;
C、 预期工作时刻数;
D、 工作时刻周期 Offset;
E、 工作时段最小周期窗口;
F、 工作信道;
G、 数据传输速率;
H、 发送指示位;
其中, B、 G、 H项为可选信息, B、 C、 D、 E项为所述的工作时间信 息。 由于工作时间信息中不包括目标站点监听工作信道的时间周期, 只是 包括了预期工作时刻数, 例如, 若所述预期工作时刻数为 2, 其中一个监听 工作信道的工作时段距离当前信标帧有 2个信标帧发送周期, 另一个监听 工作信道的工作时段距离当前信标帧有 6个信标帧发送周期, 那么此时工 作时刻 Offset有两个值, 一个是 2, —个是 6, 在所述预期工作时刻数指示 的时间段内工作时间信息有效。 因此从工作时间信息中只能知晓目标站点 近期监听工作信道的时间信息。
步骤 S1202,目标站点在所述工作时间信息指定的在预定时刻监听工作 信道。
步骤 S1203 , 查询站点在其工作信道上监听目标站点发送的信标帧。 步骤 S1204, 查询站点根据所述工作时间信息, 向目标站点发起通信。 在本实施例中, 查询站点根据所述工作时间信息 (即信标帧发送滞后 时间、 工作时刻周期 Offset, 工作时段最小周期窗口、 预期工作时刻数) 以及当前信标帧的发送时刻, 即可知晓目标站点处于监听工作信道的时间 段, 其中信标帧发送滞后时间为可选项, 查询站点在该时段内, 在目标站 点的工作信道上向目标站点发起通信。
如果监听到的信标帧中包括发送指示位且有效, 则查询站点需要与目 标站点进行通信连接时, 需监听目标站点发送的信息帧, 并以此信息帧中 通信参数与目标站点建立通信连接; 如果信标帧中还包括数据传输速率且 查询站点和目标站点均支持所述数据传输速率, 则查询站点选用该数据传 输速率与目标站点进行数据通信, 否则, 查询站点以基础速率与目标站点 进行数据通信。
若所述查询站点需要与目标站点进行通信连接时, 所述信标帧中没有 目标站点的工作时间信息, 或者在所述预期工作时刻数所指示的时间范围 内, 没有目标站点处于监听工作信道的时间段, 此时工作时间信息过时, 查询站点没有发现目标站点, 那么查询站点根据当前信标帧的发送时刻、 信标帧发送滞后时间以及信标帧发送周期等信息获取信标帧的发送时间 轴, 其中信标帧发送滞后时间为可选信息, 并根据此时间轴监听目标帧发 送的新的信标帧, 再次根据其中的工作时间信息向目标站点发起通信, 直 至可以发现目标站点。
综上, 本实施例与实施例九的不同点在于, 目标站点监听工作信道的 持续时间由信标帧发送周期表示, 而非釆用绝对时间。
需要说明的是, 除了实施例五至十二所述几种工作时间信息的组合方 式外, 例如像目标站点周期性监听工作信道, 目标站点开始监听工作信道 的时刻信息釆用绝对时间的表现方式, 目标站点监听工作信道的持续时间 信息釆用信标帧周期的表现方式, 或者目标站点不再周期性监听工作信道, 目标站点开始监听工作信道的时刻信息釆用绝对时间的表现方式, 目标站 点监听工作信道的持续时间信息釆用信标帧周期的表现方式等等, 此时工 作时间信息只需设置相应的参数即可, 这些组合方案都在本发明保护范围 之内。 实施例十三:
本实施例提供了一种目标站点与查询站点间的通讯系统, 如图 5所示, 该通讯系统包括实施例三所述的目标站点 131 和实施例四所述的查询站点 132, 所述目标站点 131发送包含工作时间信息的信标帧, 查询站点 132监 听所述信标帧, 目标站点 131 在指定的工作时刻开始监听工作信道, 查询 站点 132根据监听到信标帧中所包含的工作时间信息, 在目标站点处于监 听工作信道状态的时间段内, 向目标站点发起通信即可。 在本实施例中, 由于目标站点 131无需全时段监听信道, 提高了信道监听效率。
从上述实施例可看出, 本发明实施例中, 目标站点发送的信标帧中包 括目标站点的工作时间信息, 查询站点监听到所述信标帧后, 可以获取到 目标站点何时开始监听工作信道以及持续多长时间等信息, 当查询站点需 要与目标站点建立通信连接时, 在目标站点处于监听工作信道的时间段内, 向目标站点发起通信即可, 通过本发明实施例, 目标站点无需在每次发送 信标帧后立即开始监听工作信道, 只需在预定时间监听工作信道即可, 这 样提高了目标站点的监听效率。 此外, 所述信标帧中还包括目标站点的工 作信道信息, 目标站点会向其支持的信道发送信标帧, 位于其他信道的查 询站点亦可发现所述目标站点, 当查询站点需要与目标站点建立通信连接 时, 只需将自己的工作信道调整到目标站点的工作信道, 在目标站点的工 作信道上向目标站点发起通信即可, 这样可以大大提高目标站点被发现的 概率。
本领域普通技术人员可以理解, 实现上述实施例方法中的全部或部分 步骤是可以通过程序来指令相关的硬件来完成, 所述的程序可以在存储于 一计算机可读取存储介质中, 所述的存储介质, 如 ROM/RAM、 磁盘、 光 盘等。
以上所述仅为本发明的较佳实施例而已, 并不用以限制本发明, 凡在 本发明的精神和原则之内所作的任何修改、 等同替换和改进等, 均应包含 在本发明的保护范围之内。

Claims

权利要求
1、 一种目标站点的通讯方法, 其特征在于, 所述方法包括下述步骤: 目标站点发送信标帧, 所述信标帧包括目标站点的工作时间信息; 目标站点在所述工作时间信息指定的时刻监听工作信道。
2、 如权利要求 1所述的通讯方法, 其特征在于, 所述信标帧还包括目 标站点的工作信道信息, 所述目标站点在其支持的信道中发送信标帧。
3、 如权利要求 1或 2所述的通讯方法, 其特征在于, 所述信标帧还包 括发送周期信息, 目标站点按照所述发送周期发送信标帧。
4、 如权利要求 1或 2所述的通讯方法, 其特征在于, 所述信标帧还包 括数据传输速率信息。
5、 如权利要求 4所述的通讯方法, 其特征在于, 目标站点以所述数据 传输速率与查询站点进行数据通信。
6、 如权利要求 1或 2所述的通讯方法, 其特征在于, 所述信标帧还包 括发送指示位, 所述发送指示位用于指示目标站点开始监听工作信道时, 在其工作信道上发送信息帧。
7、 如权利要求 6所述的通讯方法, 其特征在于, 所述信息帧包括目标 站点的连接信息和 /或服务信息。
8、 如权利要求 1至 7任一项所述的通讯方法, 其特征在于, 所述工作 时间信息为目标站点监听工作信道的时间信息, 包括目标站点开始监听工 作信道的时刻信息以及目标站点监听工作信道的持续时间信息, 其中, 所 述时刻信息可以釆用绝对时间、 信标帧周期数或信标帧编号表示, 所述持 续时间信息可以釆用绝对时间或信标帧周期数来表示。
9、 如权利要求 8所述的通讯方法, 其特征在于, 所述工作时间信息还 包括目标站点周期性监听工作信道的时间周期。
10、 一种查询站点的通讯方法, 其特征在于, 所述通讯方法包括下述 步骤:
查询站点在其工作信道上监听目标站点发送的信标帧, 所述信标帧包 括目标站点的工作时间信息。
查询站点根据所述工作时间信息, 向目标站点发起通信。
11、 如权利要求 10所述的通讯方法, 其特征在于, 所述信标帧还包括 工作信道信息, 查询站点根据所述工作时间信息和工作信道信息, 在指定 的工作信道向目标站点发起通信。
12、 如权利要求 10或 11所述的通讯方法, 其特征在于, 所述工作时 间信息为目标站点监听工作信道的时间信息, 包括目标站点开始监听工作 信道的时刻信息以及目标站点监听工作信道的持续时间信息, 其中, 所述 时刻信息可以釆用绝对时间、 信标帧周期数或信标帧编号表示, 所述持续 时间信息可以釆用绝对时间或信标帧周期数来表示。
13、 如权利要求 12所述的通讯方法, 其特征在于, 所述工作时间信息 还包括目标站点周期性监听工作信道的时间周期。
14、 如权利要求 10至 13任一项所述的通讯方法, 其特征在于, 所述 信标帧还包括目标站点发送信标帧的发送周期信息。
15、 如权利要求 14所述的通讯方法, 其特征在于, 若所述查询站点没 有发现目标站点, 则根据信标帧中所述的发送周期信息, 监听目标站点发 送的新的信标帧, 查询站点根据新的信标帧中的工作时间信息, 或工作时 间信息和工作信道信息, 向目标站点发起通信。
16、 如权利要求 15所述的通讯方法, 其特征在于, 所述查询站点没有 发现目标站点具体包括: 查询站点监听到的信标帧中不包括目标站点的工 作时间信息, 或者在所述工作时间信息指定的时间段内, 目标站点并没有 监听其工作信道, 或者所述工作时间信息已经过时。
17、 如权利要求 10至 16任一项所述的通讯方法, 其特征在于, 所述 监听到的信标帧中还包括发送指示位, 所述发送指示位用于指示查询站点 需要与目标站点进行通信连接时, 在目标站点的工作信道上监听目标站点 发送的信息帧。
18、 如权利要求 17所述的通讯方法, 其特征在于, 所述信息帧包括目 标站点的连接信息和 /或服务信息。
19、 如权利要求 10至 16任一项所述的通讯方法, 其特征在于, 所述 监听到的信标帧中还包括数据传输速率信息。
20、 如权利要求 19所述的通讯方法, 其特征在于, 查询站点以该数据 传输速率与目标站点进行数据通信。
21、 一种目标站点, 其特征在于, 所述目标站点包括:
信标帧发送单元, 用于目标站点发送信标帧, 所述信标帧包括目标站 点的工作时间信息;
信道监听单元, 用于目标站点在所述工作时间信息指定的时刻开始监 听工作信道。
22、 如权利要求 21所述的目标站点, 其特征在于, 所述信标帧还包括 目标站点的工作信道信息, 所述信标帧发送单元用于目标站点在其支持的 信道中发送信标帧。
23、 如权利要求 21或 22所述的目标站点, 其特征在于, 所述信标帧 还包括发送周期信息, 目标站点按照所述发送周期发送信标帧。
24、 如权利要求 21或 22所述的目标站点, 其特征在于, 所述信标帧 还包括数据传输速率信息。
25、 如权利要求 24所述的目标站点, 其特征在于, 目标站点以该数据 传输速率与查询站点进行数据通信。
26、 如权利要求 21或 22所述的目标站点, 其特征在于, 所述信标帧 还包括发送指示位, 所述发送指示位用于指示目标站点开始监听工作信道 时, 在其工作信道上发送信息帧。
27、 如权利要求 26所述的目标站点, 其特征在于, 所述信息帧包括目 标站点的连接信息和 /或服务信息。
28、 如权利要求 21至 27任一项所述的目标站点, 其特征在于, 所述 工作时间信息为目标站点监听工作信道的时间信息, 包括目标站点开始监 听工作信道的时刻信息以及目标站点监听工作信道的持续时间信息, 其中, 所述时刻信息可以釆用绝对时间、 信标帧周期数或信标帧编号表示, 所述 持续时间信息可以釆用绝对时间或信标帧周期数来表示。
29、 如权利要求 28所述的目标站点, 其特征在于, 所述工作时间信息 还包括目标站点周期性监听工作信道的时间周期。
30、 一种查询站点, 其特征在于, 所述查询站点包括:
信标帧监听单元, 用于查询站点在其工作信道上监听目标站点发送的 信标帧, 所述信标帧包括目标站点的工作时间信息。
通信连接单元, 用于查询站点根据所述工作时间信息, 向目标站点发 起通信。
31、 如权利要求 30所述的查询站点, 其特征在于, 所述信标帧还包括 工作信道信息, 所述信标帧监听单元用于查询站点需要与目标站点进行通 信连接时, 根据所述工作时间信息和工作信道信息, 在指定的工作信道向 目标站点发起通信。
32、 如权利要求 30或 31所述的查询站点, 其特征在于, 所述工作时 间信息为目标站点监听工作信道的时间信息, 包括目标站点开始监听工作 信道的时刻信息以及目标站点监听工作信道的持续时间信息, 其中, 所述 时刻信息可以釆用绝对时间、 信标帧周期数或信标帧编号表示, 所述持续 时间信息可以釆用绝对时间或信标帧周期数来表示。
33、 如权利要求 32所述的查询站点, 其特征在于, 所述工作时间信息 还包括目标站点周期性监听工作信道的时间周期。
34、 如权利要求 30至 33任一项所述的查询站点, 其特征在于, 所述 信标帧还包括目标站点发送信标帧的发送周期信息。
35、 如权利要求 34所述的查询站点, 其特征在于, 若所述查询站点没 有发现目标站点, 则根据信标帧中所述的发送周期信息, 监听目标站点发 送的新的信标帧, 查询站点根据新的信标帧中的工作时间信息, 或工作时 间信息和工作信道信息, 向目标站点发起通信。
36、 如权利要求 35所述的查询站点, 其特征在于, 所述查询站点没有 发现目标站点具体包括: 查询站点监听到的信标帧中不包括目标站点的工 作时间信息, 或者在所述工作时间信息指定的时间段内, 目标站点并没有 监听其工作信道, 或者所述工作时间信息已经过时。
37、 如权利要求 30至 36任一项所述的查询站点, 其特征在于, 所述 监听到的信标帧中还包括发送指示位, 所述发送指示位用于指示查询站点 需要与目标站点进行通信连接时, 在目标站点的工作信道上监听目标站点 发送的信息帧。
38、 如权利要求 37所述的查询站点, 其特征在于, 所述信息帧包括目 标站点的连接信息和 /或服务信息。
39、 如权利要求 30至 36任一项所述的查询站点, 其特征在于, 其特 征在于, 所述监听到的信标帧中还包括数据传输速率信息 .
40、 如权利要求 39所述的查询站点, 其特征在于, 查询站点以该数据 传输速率与目标站点进行数据通信。
41、 一种目标站点与查询站点间的通讯系统, 所述系统包括如权利要 求 21至 29任一项所述的目标站点, 以及如权利要求 30至 40任一项所述 的查询站点。
PCT/CN2013/071060 2012-03-26 2013-01-29 一种目标站点、查询站点、通讯系统以及通讯方法 WO2013143356A1 (zh)

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