CN104854954A - Communication device and wireless communication method - Google Patents
Communication device and wireless communication method Download PDFInfo
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- CN104854954A CN104854954A CN201380062726.1A CN201380062726A CN104854954A CN 104854954 A CN104854954 A CN 104854954A CN 201380062726 A CN201380062726 A CN 201380062726A CN 104854954 A CN104854954 A CN 104854954A
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- message frame
- frame
- broadcast message
- discovery broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/005—Discovery of network devices, e.g. terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Abstract
Provided in the present invention is a communication device comprising: a data interaction module, for receiving a discovery broadcast message frame and transmitting a response message frame of the discovery broadcast message frame, wherein the discovery broadcast message frame is received at a first time point and at least contains a broadcast cycle of the discovery broadcast message frame and/or a second time point for the re-transmission of the discovery broadcast message frame; and a data processing module, for recording the first time point, acquiring the second time point, and determining a third time point between the first time point and the second time point for the data interaction module to transmit the response message frame. The technical solution of the present invention enables the devices receiving the discovery broadcast message frame to respectively determine the corresponding time points for returning the response message frame, thereby reducing the probability of conflict in the prior art due to the fact that the devices all transmit the response message frame immediately, and also contributing to improving the efficiency of connection establishment among the devices.
Description
Specification
Communication equipment and wireless communications method
Technical field
The present invention relates to wireless communication technology field, in particular to a kind of communication equipment and a kind of wireless communications method.Background technology
In WFA (Wi-Fi Alliance), new seminar NAN (Neighbor Awareness Networking, neighbours' sensing network has been set up）, the content that it is studied is social networks, mainly by numerous STA (terminals）How to find that others have the STA of common service and carry out file-sharing or other business.
Due in existing 802.11 mechanism, in the absence of situation of the service message for broadcast message, so defining how to handle serviced broadcast message without special mechanism and method.But in existing 802.11 mechanism, for general broadcast message, STA (terminal) can reply sender of the response message to broadcast message at once after such a message has been received.In view of the actual conditions in NAN networks, many respondents may be there are around the sender STA that broadcasts the message, situation about so bringing is the sender that substantial amounts of response message replies to broadcast message within the short time, substantial amounts of conflict may be caused, for concealed nodes, conflict is inevitable.Specific schematic diagram sends broadcast service discovery message frame as shown in Fig. 1 by STA B, but be due to STA A and STA B they can not mutually listen to the response message frame of the broadcast message frame transmitted by other side, and interfere.
Therefore, need a kind of new technical scheme, find that the equipment of broadcast message frame each determines corresponding time point to return to response message frame so that receiving, equipment sends response message frame and there may be the possibility of conflict, is conducive to equipment room to set up the raising of joint efficiency immediately in the prior art for reduction.
The content of the invention
The present invention is based on above mentioned problem, propose a kind of new technical scheme, find that the equipment of broadcast message frame each determines corresponding time point to return to response message frame so that receiving, equipment sends response message frame immediately and produces the possibility of conflict in the prior art for reduction, is conducive to equipment room to set up the raising of joint efficiency.
In view of this, the present invention proposes a kind of communication equipment, including：Data interaction module, receive and find broadcast message frame, and send the response message frame of the discovery broadcast message frame, wherein, the discovery broadcast message frame is received in first time point, and second time point for finding to be sent again including at least the broadcast cycle and/or the discovery broadcast message frame of the discovery broadcast message frame in broadcast message frame；Data processing module, record the first time point, in the case of obtaining second time point or only including the broadcast cycle in the discovery broadcast message frame, calculated according to the broadcast cycle and obtain second time point, and determine at the 3rd time point, the response message frame to be sent for the data interaction module between the first time point and second time point.
In the technical scheme, communication equipment can be mobile phone or flat board, can also be the equipment such as router, data processing module can be the chip module of data processing in communication equipment, and data interaction module is then equivalent to signal receiving/transmission device and antenna etc..Preferably, above-mentioned communication equipment is support
The equipment of NAN functions.In NAN networks, communication equipment is when receiving discovery broadcast message frame, default treatment mode is to return to response message frame immediately, but this is for finding the sender of broadcast message frame, when the number of devices for returning to response message frame is excessive, conflict may be caused in sender, so as to have influence on the joint efficiency of equipment room.Therefore, the first time point for finding broadcast message frame is received by being recorded by equipment（It is assumed that T1)；The second time point that sender sends again can be parsed from broadcast message frame is found simultaneously（It is assumed that T2), certainly, in the case of one kind, T2 directly may be parsed from broadcast message frame is found, in another case, parsing first obtains the transmission cycle of above-mentioned message frame（It is assumed that T), then calculate and obtained for the second time point for T2=T1+T;Then, chose for the 3rd time point between T1 and Τ 2（It is assumed that Τ 3), and send response message frame in Τ 3.Because each equipment chooses itself corresponding Τ 3 respectively, therefore, the probability of same time transmission response message frame is reduced, reduces or avoids the probability for producing conflict, be also beneficial to the raising that equipment room sets up joint efficiency.
In the above-mentioned technical solutions, it is preferable that the 3rd time point be the data processing module with
The time point that machine is chosen.
In the technical scheme, T3 is randomly selected, and its selection mode can be that one section duration of the arbitrary time point either between T 1 and T2 is chosen between T1 and T2, and this duration can be by chronomere（Time Unit, TU) it is multiplied by what certain integer m was got, T3 selection can also be 0 to one Integer n of selection random between m, then obtained multiplied by with TU, by it is in need return response message frame T3 time points all identical probability it is very low, the probability for sending message collision effectively can be reduced or avoided, the raising that equipment room sets up joint efficiency is also beneficial to.
In the above-mentioned technical solutions, it is preferable that the discovery broadcast message frame that the data interaction module is received is service discovery broadcast message frame, device discovery broadcast messages frame or service and device discovery broadcast messages frame.
In the technical scheme, service message type is included in service discovery broadcast message frame, the service type for sender to be supported informs the equipment for receiving the message frame.Device type is included in device discovery broadcast messages frame, for the device type of sender to be informed into the equipment for receiving the message frame.Service message type and/or device type are then included in service and device discovery broadcast messages frame, so that the related news of sender to be informed to the equipment for receiving the message frame.
In the above-mentioned technical solutions, preferably, the data processing module is it is determined that before the 3rd time point, time synchronized functional parameter is also obtained from the discovery broadcast message frame, and time synchronized is carried out using the time synchronized functional parameter and the sender of the discovery broadcast message frame.
In the technical scheme, because the time that equipment room is followed is possible and asynchronous, thus by finding the TSF in broadcast message frame (Time Synchronization Function, time synchronized functional parameter）Information, realizes the time synchronized between the sender of message frame and recipient, in favor of the determination to T3, it is to avoid calculating obtained T3 can not use（Such as larger than transmission cycle of discovery feature message frame etc.）.
In the above-mentioned technical solutions, preferably, the data processing module also obtains device type flag or message frame type identification position from the discovery broadcast message frame, and the value of the device type flag or message frame type identification position represents whether the sender of the discovery broadcast message frame is neighbours' sensing network equipment or whether the discovery broadcast message frame is neighbours' sensing network message frame.
In the technical scheme, had much by the type of broadcast message frame, some may not be to find
Broadcast message frame, is not used to the discovery connection of NAN equipment rooms, therefore, the sender of message frame needs to indicate the identity of itself, i.e., whether be NAN equipment, the operation such as the message frame is parsed if so, receiving and can perform just now, otherwise without performing.
In the above-mentioned technical solutions, it is preferable that the data processing module determines the value of the device type flag or message frame type identification position from the frame control domain of the frame head of the media access control frame of the discovery broadcast message frame.
In the technical scheme, it is possible to use MAC (the Medium Access Control, media access control of message frame）One or more of the frame control domain of the frame head of frame reserved place, comes place apparatus type identification position or message frame type identification position, to show support situation of the sender to service message of the message frame.
In the above-mentioned technical solutions, preferably, the data processing module determines the value of the device type flag or message frame type identification position from the type subdomain and subtype subdomain of the frame control domain of the frame head of the media access control frame of the discovery broadcast message frame.
In the technical scheme, specifically, such as place apparatus type identification position or message frame type identification position can be come, to show support situation of the sender to service message of the message frame with " 11 " in use pattern subdomain, " 0000 " corresponding reserved place in subtype subdomain.When the value of the predeterminated position matches with default value, the sender of decision message frame is NAN equipment；Otherwise it is assumed that not being NAN equipment, Lost abandons the message frame if the destination address of the message frame is not the recipient , of the message frame.
In the above-mentioned technical solutions, preferably, in the case where the discovery broadcast message frame is service discovery broadcast message frame or service and device discovery broadcast messages frame, the data processing module also obtains service type identification position from the discovery broadcast message frame, and the value of the service type identification position represents the specifying information of the corresponding service message type of the discovery broadcast message frame and/or service message.
In the technical scheme, for service discovery broadcast message frame and service and device discovery broadcast messages frame, support situation of the sender for service message of the message frame can be directly determined, determines whether to be connected to the transmission method, apparatus.
In the above-mentioned technical solutions, it is preferable that the frame head part of the data processing module from the media access control frame of the discovery broadcast message frame determines the value of the service type identification position.
In the technical scheme, it is possible to use the one or more of the frame head part of MAC frames reserve
Position, to place service type identification position.Specifically, such as A (Address) 1, A2, A3 domain are included in the frame head part of MAC frames, wherein, Al domains address for descriptive purposes, A2 domains are used to describe source address, in view of the actual features of NAN networks, it is connected equivalent to each NAN equipment independence with other NAN equipment, without the auxiliary of other equipment, so A3 addresses can not possibly be used in NAN networks, then can be used as the service type identification position of NAN equipment with it.
In the above-mentioned technical solutions, it is preferable that the data processing module determines the value of the service type identification position from the order domain of the body section of the media access control frame of the discovery broadcast message frame.
In the technical scheme, service type identification position can also be placed using one or more reserved places of the body section of MAC frames.Specifically, the reserved place can be located in the order domain of the body section of MAC frames, and certain service type identification position can also be with information element（IE form) occurs, and is placed in some order domain of frame, for example, is placed on order domain 26, naturally it is also possible to is placed on other order domains.
The invention also provides a kind of wireless communications method, including：Receive and find broadcast message frame, and first time point when recording reception；The second time point that the broadcast cycle and/or the discovery broadcast message frame of the discovery broadcast message frame are sent again is comprised at least in the discovery broadcast message frame, wherein, when only including the broadcast cycle in the discovery broadcast message frame, calculated according to the broadcast cycle and obtain second time point；In the first time point and second time, between determine the 3rd time point, for send it is described find broadcast message frame response message frame.
In the technical scheme, communication equipment can be mobile phone or flat board, can also be the equipment such as router, data processing module can be the chip module of data processing in communication equipment, and data interaction module is then equivalent to signal receiving/transmission device and antenna etc..Preferably, above-mentioned communication equipment is the equipment for supporting NAN functions.In NAN networks, communication equipment is when receiving discovery broadcast message frame, default treatment mode is to return to response message frame immediately, but this is for finding the sender of broadcast message frame, when the number of devices for returning to response message frame is excessive, conflict may be caused in sender, so as to have influence on the joint efficiency of equipment room.Therefore, the first time point for finding broadcast message frame is received by being recorded by equipment（It is assumed that T1)；The second time point that sender sends again can be parsed from broadcast message frame is found simultaneously（It is assumed that T2), certainly, in the case of one kind,
T2 directly may be parsed from broadcast message frame is found, in another case, parsing first obtains the transmission cycle of above-mentioned message frame（It is assumed that T), then calculate and obtained for the second time point for T2=T1+T;Then, chose for the 3rd time point between T1 and Τ 2（It is assumed that Τ 3), and send response message frame in Τ 3.Because each equipment chooses itself corresponding Τ 3 respectively, therefore, the probability of same time transmission response message frame is reduced, reduces or avoids the probability for producing conflict, be also beneficial to the raising that equipment room sets up joint efficiency.
In the above-mentioned technical solutions, it is preferable that also include：3rd time point is the time point randomly selected.
In the technical scheme, Τ 3 is randomly selected, and its selection mode can be that one section duration of the arbitrary time point either between T1 and Τ 2 is chosen between T1 and Τ 2, and this duration can be by chronomere（Time Unit, TU) it is multiplied by what certain integer m was got, T3 selection can also be 0 to one Integer n of selection random between m, then obtained multiplied by with TU, by it is in need return response message frame T3 time points all identical probability it is very low, the probability for sending message collision effectively can be reduced or avoided, the raising that equipment room sets up joint efficiency is also beneficial to.
In the above-mentioned technical solutions, it is preferable that also include：The discovery broadcast message frame is service discovery broadcast message frame, device discovery broadcast messages frame or service and device discovery broadcast messages frame.
In the technical scheme, service message type is included in service discovery broadcast message frame, the service type for sender to be supported informs the equipment for receiving the message frame.Device type is included in device discovery broadcast messages frame, for the device type of sender to be informed into the equipment for receiving the message frame.Service message type and/or device type are then included in service and device discovery broadcast messages frame, so that the related news of sender to be informed to the equipment for receiving the message frame.
In the above-mentioned technical solutions, it is preferable that it is determined that before the 3rd time point, in addition to：Time synchronized functional parameter is obtained from the discovery broadcast message frame, and time synchronized is carried out using the time synchronized functional parameter and the sender of the discovery broadcast message frame.
In the technical scheme, because the time that equipment room is followed is possible and asynchronous, thus by finding the TSF in broadcast message frame (Time Synchronization Function, time synchronized functional parameter）Information, realizes the time synchronized between the sender of message frame and recipient, in favor of the determination to T3, it is to avoid calculating obtained T3 can not use（The transmission of such as larger than discovery feature message frame is all
Phase etc.）.
In the above-mentioned technical solutions, it is preferable that also include：Obtain device type flag or message frame type identification position from the discovery broadcast message frame, the value of the device type flag or message frame type identification position represents whether the sender of the discovery broadcast message frame is neighbours' sensing network equipment or whether the discovery broadcast message frame is neighbours' sensing network message frame.
In the technical scheme, had much by the type of broadcast message frame, some may not be to find broadcast message frame, the discovery connection of NAN equipment rooms is not used to, therefore, the sender of message frame needs to indicate the identity of itself, whether it is NAN equipment, the operation such as the message frame is parsed if so, receiving and can perform just now, otherwise without performing.
In the above-mentioned technical solutions, it is preferable that also include：The value of the device type flag or message frame type identification position is determined from the frame control domain of the frame head of the media access control frame of the discovery broadcast message frame.
In the technical scheme, it is possible to use MAC (the Medium Access Control, media access control of message frame）One or more of the frame control domain of the frame head of frame reserved place, comes place apparatus type identification position or message frame type identification position, to show support situation of the sender to service message of the message frame.
In the above-mentioned technical solutions, it is preferable that also include：The value of the device type flag or message frame type identification position is determined from the type subdomain and subtype subdomain of the frame control domain of the frame head of the media access control frame of the discovery broadcast message frame.
In the technical scheme, specifically, such as place apparatus type identification position or message frame type identification position can be come, to show support situation of the sender to service message of the message frame with " 11 " in use pattern subdomain, " 0000 " corresponding reserved place in subtype subdomain.When the value of the predeterminated position matches with default value, the sender of decision message frame is NAN equipment；Otherwise it is assumed that not being NAN equipment, Lost abandons the message frame if the destination address of the message frame is not the recipient , of the message frame.
In the above-mentioned technical solutions, it is preferable that when it is described discovery broadcast message frame be service discovery broadcast message frame or service and device discovery broadcast messages frame when, in addition to：Service type identification position is obtained from the discovery broadcast message frame, the value of the service type identification position represents the specifying information of the corresponding service message type of the discovery broadcast message frame and/or service message.
In the technical scheme, for service discovery broadcast message frame and service and device discovery broadcast messages frame, support situation of the sender for service message of the message frame can be directly determined, determines whether to be connected to the transmission method, apparatus.
In the above-mentioned technical solutions, it is preferable that also include：The value of the service type identification position is determined from the frame head part of the media access control frame of the discovery broadcast message frame.
In the technical scheme, it is possible to use one or more reserved places of the frame head part of MAC frames, to place service type identification position.Specifically, such as A (Address) 1, A2, A3 domain are included in the frame head part of MAC frames, wherein, Al domains address for descriptive purposes, A2 domains are used to describe source address, in view of the actual features of NAN networks, it is connected equivalent to each NAN equipment independence with other NAN equipment, without the auxiliary of other equipment, so A3 addresses can not possibly be used in NAN networks, then can be used as the service type identification position of NAN equipment with it.
In the above-mentioned technical solutions, it is preferable that also include：The value of the service type identification position is determined from the order domain of the body section of the media access control frame of the discovery broadcast message frame.
In the technical scheme, service type identification position can also be placed using one or more reserved places of the body section of MAC frames.Specifically, the reserved place can be located in the order domain of the body section of MAC frames, and certain service type identification position can also be with information element（IE form) occurs, and is placed in some order domain of frame, for example, is placed on order domain 26, naturally it is also possible to is placed on other order domains.
Pass through above technical scheme, it can to receive and find that the equipment of broadcast message frame each determines corresponding time point to return to response message frame, equipment sends response message frame immediately and produces the possibility of conflict in the prior art for reduction, is conducive to equipment room to set up the raising of joint efficiency.Brief description of the drawings
Fig. 1 shows the schematic diagram that interference is produced between multiple equipment in the prior art；
Fig. 2 shows the block diagram of communication equipment according to an embodiment of the invention；
Fig. 3 shows the flow chart of wireless communications method according to an embodiment of the invention；
Fig. 4 shows specific handling process according to an embodiment of the invention to finding broadcast message frame
Embodiment
In order to be more clearly understood that the above objects, features and advantages of the present invention, the present invention is further described in detail with reference to the accompanying drawings and detailed description.It should be noted that in the case where not conflicting, the feature in embodiments herein and embodiment can be mutually combined.
Many details are elaborated in the following description to fully understand the present invention; but; the present invention can also be different from other modes described here to implement using other, and therefore, protection scope of the present invention is not limited by following public specific embodiment.
Fig. 2 shows the block diagram of communication equipment according to an embodiment of the invention.
As shown in Fig. 2 communication equipment 200 according to an embodiment of the invention, including：Data interaction module 202, receive and find broadcast message frame, and send the response message frame of the discovery broadcast message frame, wherein, the discovery broadcast message frame is received in first time point, and second time point for finding to be sent again including at least the broadcast cycle and/or the discovery broadcast message frame of the discovery broadcast message frame in broadcast message frame；Data processing module 204, record the first time point, in the case of obtaining second time point or only including the broadcast cycle in the discovery broadcast message frame, calculated according to the broadcast cycle and obtain second time point, and determine at the 3rd time point, the response message frame to be sent for the data interaction module 202 between the first time point and second time point.
In the technical scheme, communication equipment 200 can be mobile phone or flat board, can also be the equipment such as router, data processing module 204 can be the chip module of data processing in communication equipment 200, and data interaction module 202 is then equivalent to signal receiving/transmission device and antenna etc..Preferably, above-mentioned communication equipment 200 is the equipment for supporting NAN functions.In NAN networks, communication equipment 200 is when receiving discovery broadcast message frame, default treatment mode is to return to response message frame immediately, but this is for finding the sender of broadcast message frame, when the number of devices for returning to response message frame is excessive, conflict may be caused in sender, so as to have influence on the joint efficiency of equipment room.Therefore, the first time point for finding broadcast message frame is received by being recorded by equipment（It is assumed that T1)；The second time point that sender sends again can be parsed from broadcast message frame is found simultaneously（It is assumed that T2), certainly, in the case of one kind, T2 directly may be parsed from broadcast message frame is found, in another case, parsing first obtains the transmission cycle of above-mentioned message frame（It is assumed that T), then calculate and obtained for the second time point for T2=T1+T;Then, chose for the 3rd time point between T1 and Τ 2
(it is assumed that T3), and send response message frame in Τ 3.Because each equipment chooses itself corresponding Τ 3 respectively, therefore, the probability of same time transmission response message frame is reduced, reduces or avoids the probability for producing conflict, be also beneficial to the raising that equipment room sets up joint efficiency.
In the above-mentioned technical solutions, it is preferable that the 3rd time point is the time point that the data processing module 204 is randomly selected.
In the technical scheme, Τ 3 is randomly selected, and its selection mode can be that one section duration of the arbitrary time point either between T1 and Τ 2 is chosen between T1 and Τ 2, and this duration can be by chronomere（Time Unit, TU) it is multiplied by what certain integer m was got, T3 selection can also be 0 to one Integer n of selection random between m, then obtained multiplied by with TU, by it is in need return response message frame T3 time points all identical probability it is very low, the probability for sending message collision effectively can be reduced or avoided, the raising that equipment room sets up joint efficiency is also beneficial to.
In the above-mentioned technical solutions, it is preferable that the discovery broadcast message frame that the data interaction module 202 is received is service discovery broadcast message frame, device discovery broadcast messages frame or service and device discovery broadcast messages frame.
In the technical scheme, service message type is included in service discovery broadcast message frame, the service type for sender to be supported informs the equipment for receiving the message frame.Device type is included in device discovery broadcast messages frame, for the device type of sender to be informed into the equipment for receiving the message frame.Service message type and/or device type are then included in service and device discovery broadcast messages frame, so that the related news of sender to be informed to the equipment for receiving the message frame.
In the above-mentioned technical solutions, preferably, the data processing module 204 is it is determined that before the 3rd time point, time synchronized functional parameter is also obtained from the discovery broadcast message frame, and time synchronized is carried out using the time synchronized functional parameter and the sender of the discovery broadcast message frame.
In the technical scheme, because the time that equipment room is followed is possible and asynchronous, thus by finding the TSF in broadcast message frame (Time Synchronization Function, time synchronized functional parameter）Information, realizes the time synchronized between the sender of message frame and recipient, in favor of the determination to T3, it is to avoid calculating obtained T3 can not use（Such as larger than transmission cycle of discovery feature message frame etc.）.
In the above-mentioned technical solutions, it is preferable that the data processing module 204 is also found extensively from described
Broadcast and device type flag or message frame type identification position are obtained in message frame, the value of the device type flag or message frame type identification position represents whether the sender of the discovery broadcast message frame is neighbours' sensing network equipment or whether the discovery broadcast message frame is neighbours' sensing network message frame.
In the technical scheme, had much by the type of broadcast message frame, some may not be to find broadcast message frame, the discovery connection of NAN equipment rooms is not used to, therefore, the sender of message frame needs to indicate the identity of itself, whether it is NAN equipment, the operation such as the message frame is parsed if so, receiving and can perform just now, otherwise without performing.
In the above-mentioned technical solutions, it is preferable that the data processing module 204 determines the value of the device type flag or message frame type identification position from the frame control domain of the frame head of the media access control frame of the discovery broadcast message frame.
In the technical scheme, it is possible to use MAC (the Medium Access Control, media access control of message frame）One or more of the frame control domain of the frame head of frame reserved place, comes place apparatus type identification position or message frame type identification position, to show support situation of the sender to service message of the message frame.
In the above-mentioned technical solutions, preferably, the data processing module 204 determines the value of the device type flag or message frame type identification position from the type subdomain and subtype subdomain of the frame control domain of the frame head of the media access control frame of the discovery broadcast message frame.
In the technical scheme, specifically, such as place apparatus type identification position or message frame type identification position can be come, to show support situation of the sender to service message of the message frame with " 11 " in use pattern subdomain, " 0000 " corresponding reserved place in subtype subdomain.When the value of the predeterminated position matches with default value, the sender of decision message frame is NAN equipment；Otherwise it is assumed that not being NAN equipment, Lost abandons the message frame if the destination address of the message frame is not the recipient , of the message frame.
In the above-mentioned technical solutions, preferably, in the case where the discovery broadcast message frame is service discovery broadcast message frame or service and device discovery broadcast messages frame, the data processing module 204 also obtains service type identification position from the discovery broadcast message frame, and the value of the service type identification position represents the specifying information of the corresponding service message type of the discovery broadcast message frame and/or service message.
In the technical scheme, find that broadcast disappears for service discovery broadcast message frame and service and equipment
Frame is ceased, support situation of the sender for service message of the message frame can be directly determined, determine whether to be connected to the transmission method, apparatus.
In the above-mentioned technical solutions, it is preferable that the frame head part of the data processing module 204 from the media access control frame of the discovery broadcast message frame determines the value of the service type identification position.
In the technical scheme, it is possible to use one or more reserved places of the frame head part of MAC frames, to place service type identification position.Specifically, such as A (Address) 1, A2, A3 domain are included in the frame head part of MAC frames, wherein, Al domains address for descriptive purposes, A2 domains are used to describe source address, in view of the actual features of NAN networks, it is connected equivalent to each NAN equipment independence with other NAN equipment, without the auxiliary of other equipment, so A3 addresses can not possibly be used in NAN networks, then can be used as the service type identification position of NAN equipment with it.
In the above-mentioned technical solutions, it is preferable that the data processing module 204 determines the value of the service type identification position from the order domain of the body section of the media access control frame of the discovery broadcast message frame.
In the technical scheme, service type identification position can also be placed using one or more reserved places of the body section of MAC frames.Specifically, the reserved place can be located in the order domain of the body section of MAC frames, and certain service type identification position can also be with information element（IE form) occurs, and is placed in some order domain of frame, for example, is placed on order domain 26, naturally it is also possible to is placed on other order domains.
Fig. 3 shows the flow chart of wireless communications method according to an embodiment of the invention.
As shown in Fig. 3, wireless communications method according to an embodiment of the invention, including：Step 302, receive and find broadcast message frame, and first time point when recording reception；Step 304, the second time point that the broadcast cycle and/or the discovery broadcast message frame of the discovery broadcast message frame are sent again is comprised at least in the discovery broadcast message frame, wherein, when only including the broadcast cycle in the discovery broadcast message frame, calculated according to the broadcast cycle and obtain second time point；Step 306, determined for the 3rd time point between the first time point and second time point, for sending the response message frame for finding broadcast message frame.
In the technical scheme, communication equipment can be the equipment such as mobile phone or flat board or router, and data processing module can be the chip module of data processing in communication equipment, and data interaction
Module is then equivalent to signal receiving/transmission device and antenna etc..Preferably, above-mentioned communication equipment is support
The equipment of NAN functions.In NAN networks, communication equipment is when receiving discovery broadcast message frame, default treatment mode is to return to response message frame immediately, but this is for finding the sender of broadcast message frame, when the number of devices for returning to response message frame is excessive, conflict may be caused in sender, so as to have influence on the joint efficiency of equipment room.Therefore, the first time point for finding broadcast message frame is received by being recorded by equipment（It is assumed that T1)；The second time point that sender sends again can be parsed from broadcast message frame is found simultaneously（It is assumed that T2), certainly, in the case of one kind, T2 directly may be parsed from broadcast message frame is found, in another case, parsing first obtains the transmission cycle of above-mentioned message frame（It is assumed that T), then calculate and obtained for the second time point for T2=T1+T;Then, chose for the 3rd time point between T1 and Τ 2（It is assumed that Τ 3), and send response message frame in Τ 3.Because each equipment chooses itself corresponding Τ 3 respectively, therefore, the probability of same time transmission response message frame is reduced, reduces or avoids the probability for producing conflict, be also beneficial to the raising that equipment room sets up joint efficiency.
In the above-mentioned technical solutions, it is preferable that also include：3rd time point is the time point randomly selected.
In the technical scheme, Τ 3 is randomly selected, and its selection mode can be that one section duration of the arbitrary time point either between T1 and Τ 2 is chosen between T1 and Τ 2, and this duration can be by chronomere（Time Unit, TU) it is multiplied by what certain integer m was got, T3 selection can also be 0 to one Integer n of selection random between m, then obtained multiplied by with TU, by it is in need return response message frame T3 time points all identical probability it is very low, the probability for sending message collision effectively can be reduced or avoided, the raising that equipment room sets up joint efficiency is also beneficial to.
In the above-mentioned technical solutions, it is preferable that also include：The discovery broadcast message frame is service discovery broadcast message frame, device discovery broadcast messages frame or service and device discovery broadcast messages frame.
In the technical scheme, service message type is included in service discovery broadcast message frame, the service type for sender to be supported informs the equipment for receiving the message frame.Device type is included in device discovery broadcast messages frame, for the device type of sender to be informed into the equipment for receiving the message frame.Service message type and/or device type are then included in service and device discovery broadcast messages frame, so that the related news of sender to be informed to the equipment for receiving the message frame.
In the above-mentioned technical solutions, it is preferable that it is determined that before the 3rd time point, in addition to：Time synchronized functional parameter is obtained from the discovery broadcast message frame, and time synchronized is carried out using the time synchronized functional parameter and the sender of the discovery broadcast message frame.
In the technical scheme, because the time that equipment room is followed is possible and asynchronous, thus by finding the TSF in broadcast message frame (Time Synchronization Function, time synchronized functional parameter）Information, realizes the time synchronized between the sender of message frame and recipient, in favor of the determination to T3, it is to avoid calculating obtained T3 can not use（Such as larger than transmission cycle of discovery feature message frame etc.）.
In the above-mentioned technical solutions, it is preferable that also include：Obtain device type flag or message frame type identification position from the discovery broadcast message frame, the value of the device type flag or message frame type identification position represents whether the sender of the discovery broadcast message frame is neighbours' sensing network equipment or whether the discovery broadcast message frame is neighbours' sensing network message frame.
In the technical scheme, had much by the type of broadcast message frame, some may not be to find broadcast message frame, the discovery connection of NAN equipment rooms is not used to, therefore, the sender of message frame needs to indicate the identity of itself, whether it is NAN equipment, the operation such as the message frame is parsed if so, receiving and can perform just now, otherwise without performing.
In the above-mentioned technical solutions, it is preferable that also include：The value of the device type flag or message frame type identification position is determined from the frame control domain of the frame head of the media access control frame of the discovery broadcast message frame.
In the technical scheme, it is possible to use MAC (the Medium Access Control, media access control of message frame）One or more of the frame control domain of the frame head of frame reserved place, comes place apparatus type identification position or message frame type identification position, to show support situation of the sender to service message of the message frame.
In the above-mentioned technical solutions, it is preferable that also include：The value of the device type flag or message frame type identification position is determined from the type subdomain and subtype subdomain of the frame control domain of the frame head of the media access control frame of the discovery broadcast message frame.
In the technical scheme, specifically, such as place apparatus type identification position or message frame type identification position can be come, to show support situation of the sender to service message of the message frame with " 11 " in use pattern subdomain, " 0000 " corresponding reserved place in subtype subdomain.When the predeterminated position
Value and default value when matching, the sender of decision message frame is NAN equipment；Otherwise it is assumed that not being NAN equipment, Lost abandons the message frame if the destination address of the message frame is not the recipient , of the message frame.
In the above-mentioned technical solutions, it is preferable that when it is described discovery broadcast message frame be service discovery broadcast message frame or service and device discovery broadcast messages frame when, in addition to：Service type identification position is obtained from the discovery broadcast message frame, the value of the service type identification position represents the specifying information of the corresponding service message type of the discovery broadcast message frame and/or service message.
In the technical scheme, for service discovery broadcast message frame and service and device discovery broadcast messages frame, support situation of the sender for service message of the message frame can be directly determined, determines whether to be connected to the transmission method, apparatus.
In the above-mentioned technical solutions, it is preferable that also include：The value of the service type identification position is determined from the frame head part of the media access control frame of the discovery broadcast message frame.
In the technical scheme, it is possible to use one or more reserved places of the frame head part of MAC frames, to place service type identification position.Specifically, such as A (Address) 1, A2, A3 domain are included in the frame head part of MAC frames, wherein, Al domains address for descriptive purposes, A2 domains are used to describe source address, in view of the actual features of NAN networks, it is connected equivalent to each NAN equipment independence with other NAN equipment, without the auxiliary of other equipment, so A3 addresses can not possibly be used in NAN networks, then can be used as the service type identification position of NAN equipment with it.
In the above-mentioned technical solutions, it is preferable that also include：The value of the service type identification position is determined from the order domain of the body section of the media access control frame of the discovery broadcast message frame.
In the technical scheme, service type identification position can also be placed using one or more reserved places of the body section of MAC frames.Specifically, the reserved place can be located in the order domain of the body section of MAC frames, and certain service type identification position can also be with information element（IE form) occurs, and is placed in some order domain of frame, for example, is placed on order domain 26, naturally it is also possible to is placed on other order domains.
Fig. 4 shows specific process chart according to an embodiment of the invention to finding broadcast message frame.
As shown in figure 4, according to an embodiment of the invention to find broadcast message frame specific processing stream
Journey includes：
Step 402, it is assumed that sender of the device A for discovery broadcast message frame, equipment B is some equipment for receiving the discovery broadcast message frame, exemplified by i.e. this sentences equipment B processing procedure, other equipment for receiving above-mentioned discovery broadcast message frame can also be handled according to identical step and mode.Wherein, device A, equipment B and other equipment are NAN equipment.
Step 404, equipment B judges to find whether broadcast message frame is NAN message frames.Specifically, such as it can be judged by the type subdomain of frame head part and the joint value of subtype subdomain of the MAC frames to finding broadcast message frame.If being judged as YES, into step 406, otherwise into step 412.
Step 406, equipment B judges to find whether broadcast message frame is type required for itself.Certainly, it should be noted that, it was found that broadcast message frame is specifically as follows service discovery broadcast message frame, device discovery broadcast messages frame or service and device discovery broadcast messages frame, wherein, service message type is included in service discovery broadcast message frame, for the service type annunciator B for being supported device A.Device type is included in device discovery broadcast messages frame, for by the device type annunciator B of device A.Service message type and/or device type are then included in service and device discovery broadcast messages frame, so that by the related news annunciator B of device A.
It can be seen that, when the discovery broadcast message frame that equipment B is received is service discovery broadcast message frame or service and device discovery broadcast messages frame, it is necessary to perform step 406;And when the discovery broadcast message frame received as equipment B is device discovery broadcast messages frame, then step 406 need not be performed, step 408 is directly entered by step 404.
Specifically, can be by some subdomain of the frame head part for parsing the message frame when type of the discovery broadcast message frame as equipment B to receiving judges（Such as A3, A4 domain）Or some subdomain of body section（Such as some order domain）In the service message type identification that includes, so that it is determined that the type and/or the content of service message of the service message that device A is supported.Wherein, if type is correct, into step 408, otherwise into step 412.
Step 408, determine that equipment B receives the time point T1 for finding broadcast message frame;The time point T2 that the message frame is sent again is parsed from the discovery broadcast message frame received, or parses the transmission cycle of the message frame, and T2 is obtained according to the transmission computation of Period;Between T1 and T2 determine time point T3, specifically, can by being randomly selected between T1 and T2,
So as to reduce the probability that multiple equipment chooses identical T3 time points, it is prevented effectively from and message collision occurs in device A.
It should be noted that, device A and equipment B may be in time and asynchronous, TSF information can be thus set in broadcast message frame is found, and by equipment B it is determined that before T3, synchronized according between the TSF information and device A, to ensure the accuracy and exploitativeness at time point.
Step 410, equipment B sends the response message frame of the discovery broadcast message frame received in T3.
Step 412, equipment B Lost abandon the discovery broadcast message frame received.
Technical scheme is described in detail above in association with accompanying drawing, present applicant proposes a kind of communication equipment and a kind of wireless communications method, find that the equipment of broadcast message frame each determines corresponding time point to return to response message frame so that receiving, reduce equipment in the prior art and send the probability that response message frame causes conflict immediately, be conducive to equipment room to set up the raising of joint efficiency.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art, the present invention there can be various modifications and variations.Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection.
Claims (20)
- Claims1. a kind of communication equipment, it is characterised in that including：Data interaction module, receive and find broadcast message frame, and send the response message frame of the discovery broadcast message frame, wherein, the discovery broadcast message frame is received in first time point, and second time point for finding to be sent again including at least the broadcast cycle and/or the discovery broadcast message frame of the discovery broadcast message frame in broadcast message frame；Data processing module, record the first time point, in the case of obtaining second time point or only including the broadcast cycle in the discovery broadcast message frame, calculated according to the broadcast cycle and obtain second time point, and determine at the 3rd time point, the response message frame to be sent for the data interaction module between the first time point and second time point.2. the communication equipment according to claim 1, it is characterised in that the 3rd time point is the time point that the data processing module is randomly selected.3. the communication equipment according to claim 1, it is characterised in that the discovery broadcast message frame that the data interaction module is received is service discovery broadcast message frame, device discovery broadcast messages frame or service and device discovery broadcast messages frame.4. the communication equipment according to claim 1, it is characterized in that, the data processing module is it is determined that before the 3rd time point, time synchronized functional parameter is also obtained from the discovery broadcast message frame, and time synchronized is carried out using the time synchronized functional parameter and the sender of the discovery broadcast message frame.5. the communication equipment according to claim 1, it is characterized in that, the data processing module also obtains device type flag or message frame type identification position from the discovery broadcast message frame, and the value of the device type flag or message frame type identification position represents whether the sender of the discovery broadcast message frame is neighbours' sensing network equipment or whether the discovery broadcast message frame is neighbours' sensing network message frame.6. the communication equipment according to claim 5, characterized in that, the data processing module determines the value of the device type flag or message frame type identification position from the frame control domain of the frame head of the media access control frame of the discovery broadcast message frame.7. the communication equipment according to claim 6, characterized in that, the data processing module from it is described discovery broadcast message frame media access control frame frame head frame control domain type subdomain and subtype subdomain in determine the device type flag or;The value of Xiao's breath frame type identification position.8. the communication equipment according to any one of claim 1 to 7, it is characterized in that, in the case where the discovery broadcast message frame is service discovery broadcast message frame or service and device discovery broadcast messages frame, the data processing module also obtains service type identification position from the discovery broadcast message frame, and the value of the service type identification position represents the specifying information of the corresponding service message type of the discovery broadcast message frame and/or service message.9. the communication equipment according to claim 8, it is characterised in that the frame head part of the data processing module from the media access control frame of the discovery broadcast message frame determines the value of the service type identification position.10. communication equipment according to claim 8, it is characterised in that the data processing module determines the value of the service type identification position from the order domain of the body section of the media access control frame of the discovery broadcast message frame.11. a kind of wireless communications method, it is characterised in that including；Receive and find broadcast message frame, and first time point when recording reception；The discovery broadcast is comprised at least in the discovery broadcast message frame;;The second time point that Xiao, the broadcast cycle and I of frame or the discovery broadcast message frame are sent again, wherein, when only including the broadcast cycle in the discovery broadcast message frame, calculated according to the broadcast cycle and obtain second time point；Determined for the 3rd time point between the first time point and second time point, for sending the response message frame for finding broadcast message frame.12. the wireless communications method according to claim 11, it is characterised in that also include：3rd time point is the time point randomly selected.13. the wireless communications method according to claim 11, it is characterised in that also include：The discovery broadcast message frame is service discovery broadcast message frame, device discovery broadcast messages frame or service and device discovery broadcast messages frame.14. the wireless communications method according to claim 11, it is characterised in that it is determined that before the 3rd time point, in addition to： Time synchronized functional parameter is obtained from the discovery broadcast message frame, and time synchronized is carried out using the time synchronized functional parameter and the sender of the discovery broadcast message frame.15. wireless communications method according to claim 11, it is characterised in that also include：Obtain device type flag or message frame type identification position from the discovery broadcast message frame, the value of the device type flag or message frame type identification position represents whether the sender of the discovery broadcast message frame is neighbours' sensing network equipment or whether the discovery broadcast message frame is neighbours' sensing network message frame.16. wireless communications method according to claim 15, it is characterised in that also include：The value of the device type flag or message frame type identification position is determined from the frame control domain of the frame head of the media access control frame of the discovery broadcast message frame.17. wireless communications method according to claim 16, it is characterised in that also include：Disappear from the discovery broadcast, the value of the device type flag or message frame type identification position is determined in the type subdomain and subtype subdomain of the frame control domain of the frame head of the media access control frame of frame.18. the wireless communications method according to any one of claim 11 to 17, it is characterised in that when the discovery broadcast message frame is service discovery broadcast message frame or service and device discovery broadcast messages frame, in addition to：Service type identification position is obtained from the discovery broadcast message frame, the value of the service type identification position represents the specifying information of the corresponding service message type of the discovery broadcast message frame and/or service message.19. wireless communications method according to claim 18, it is characterised in that also include：The value of the service type identification position is determined from the frame head part of the media access control frame of the discovery broadcast message frame.20. wireless communications method according to claim 18, it is characterised in that also include：The value of the service type identification position is determined from the order domain of the body section of the media access control frame of the discovery broadcast message frame.
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| PCT/CN2013/076228 WO2014186985A1 (en) | 2013-05-24 | 2013-05-24 | Communication device and wireless communication method |
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