CN101667907B - Method, system and equipment for synchronous processing - Google Patents
Method, system and equipment for synchronous processing Download PDFInfo
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- CN101667907B CN101667907B CN200810190737.9A CN200810190737A CN101667907B CN 101667907 B CN101667907 B CN 101667907B CN 200810190737 A CN200810190737 A CN 200810190737A CN 101667907 B CN101667907 B CN 101667907B
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Abstract
The invention relates to a method, a system and equipment for synchronous processing. The method comprises the following steps: receiving request message; in a competitive access period or a non-competitive access period before an ensured time slot of a current super-frame, or in an ensured time slot of a current super-frame, sending information containing time stamp; and in the competitive access period or the non-competitive access period before the ensured time slot of the current super-frame, or in the ensured time slot of the current super-frame, receiving the information containing the time stamp acquired according to the request message, and using the self ensured time slot in the current super-frame to perform communication according to the synchronization of the time stamp and a coordinator. The method, the system and the equipment greatly reduce the communication time delay, and ensure the communication quality of service which has higher requirement on the communication time delay.
Description
Technical field
The embodiment of the present invention relates to network field, relates in particular to a kind of synchronization processing method, system and equipment.
Background technology
Wireless personal area network (Wireless Personal Area Network, hereinafter to be referred as: WPAN), coordinator periodically sends superframe, and coordinator normally has the equipment of stronger communication and information processing ability.
Fig. 1-1 is the superframe structure schematic diagram one of beacon interval in prior art (Beacon Interval).As Figure 1-1, superframe generally comprises maintaining period, retains position, and the period at active period place is divided into a plurality of time slots, comprising three parts, be respectively beacon (beacon), contention access period (CAP) and non-competing access period (CFP).Beacon in Fig. 1-1 is positioned at the start-up portion of superframe, for the structure of sync correlation equipment and description superframe, i.e. and the time slot arrangement of CAP and CFP.Fig. 1-2 is the superframe structure schematic diagram two of beacon interval in prior art.As shown in Figure 1-2, in each beacon interval (Beacon Interval), there are one or more superframe structures, the identical also possibility of a plurality of superframe structures possibilities in each beacon interval is different, conventionally the period at the initial superframe structure place in beacon interval is divided into a plurality of parts, comprise beacon (beacon), contention access period (CAP), non-competing access period (CFP), the period at remaining superframe structure place is divided into a plurality of parts, comprise contention access period (CAP), a part or a few part in non-competing access period (CFP) and beacon slot (beacon slot).In Fig. 2, beacon is positioned at the start-up portion of beacon interval, for the superframe structure in sync correlation equipment and this beacon interval of description, i.e. the time slot arrangement of CAP, CFP and beacon slot.
In the contention access period of each superframe structure in Fig. 1-1 and 1-2, all relevant devices are sent information or ask coordinator to send information to coordinator by competitive way, so are usually used in the communication lower to transmission delay requirement this period; The non-competing access of each superframe structure is divided into several periods period, this period is called assurance time slot (GTS), each guarantees that time slot comprises one or more time slots, one guarantees that time slot is only distributed to an equipment and coordinator communicates, in this assurance time slot, do not allow other equipment to communicate by letter with coordinator, so the communication that is usually used in transmission delay to have relatively high expectations this period.，
When certain equipment need to be used assurance time slot, in the contention access period of current superframe, by competitive way, to coordinator, send and guarantee time slot request command; If coordinator receives, guarantee to this equipment, to send response message by time slot request command, in response message, do not comprise coordinator and whether to devices allocation, guaranteed the information of time slot; The information whether coordinator guarantees time slot to this devices allocation by is carried at from next superframe and starts, the beacon of superframe of continuous certain number, then this information to be deleted from beacon.Equipment, after send guaranteeing time slot request command and receiving the response message that coordinator returns, starts to monitor beacon from next superframe, to obtain the relevant information of oneself assurance time slot, comprises the information that guarantees gap information or the failure of application assurance time slot.Before obtaining at equipment the relevant information that guarantees time slot, be only allowed to monitor continuously the beacon of no more than certain number.If obtaining, equipment guarantees gap information,, in the non-competing access of current superframe, bring into use the assurance time slot of distributing to it period, and afterwards in each superframe identical assurance time slot by this equipment, used, until this equipment or coordinator initiate program, this is guaranteed to time slot deletion.。
In prior art, transmission cycle and time slot that equipment obtained and preserved superframe by certain mode arrange, and according to the transmission cycle of the own superframe of preserving, each coordinator, send superframe and equipment and will, when this superframe communicates period, monitor beacon to synchronizeing with coordinator.Only have after accurate synchronization, equipment could correctly judge the position that guarantees time slot, also could use the assurance time slot in current superframe.If equipment fails to synchronize with coordinator by monitoring beacon, can not use assurance time slot, or, can not obtain the relevant information that guarantees time slot, then can not use and guarantee time slot or know in time to use assurance time slot; And this equipment will arrive the next superframe that comprises beacon at the soonest could use assurance time slot, or obtains the relevant information that guarantees time slot.In this case, guarantee that the communication delay of time slot will increase, for the business that communication delay is had relatively high expectations, caused great impact.
Summary of the invention
The embodiment of the present invention provides a kind of synchronization processing method, system and equipment, in the situation that equipment fails to synchronize with coordinator by monitoring beacon, reduces communication delay, the communication quality of the business that assurance is had relatively high expectations to communication delay.
The embodiment of the present invention provides a kind of synchronization processing method, comprising:
Receive request message;
Contention access period before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, send the information that includes time stamp.
The embodiment of the present invention also provides a kind of synchronization processing method, comprising:
Contention access period before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, the information that includes time stamp that reception is obtained according to request message, according to described time stamp, synchronize with coordinator, use the time slot that guarantees of self in current superframe to communicate.
The embodiment of the present invention provides a kind of Mediation Device, comprising:
The first receiver module, for receiving request message;
The first sending module, for the request message receiving according to described the first receiver module, the contention access period before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, send the information that includes time stamp.
The embodiment of the present invention provides a kind of equipment, comprising:
The second receiver module, for the contention access period before the assurance time slot at current superframe or non-competing access period, or in the assurance time slot of current superframe, receives the information that includes time stamp of obtaining according to request message;
Synchronous communication module, for synchronizeing with Mediation Device according to described time stamp, is used the time slot that guarantees of self in current superframe to communicate.
The embodiment of the present invention provides a kind of System of Synchronous Processing, comprising:
Mediation Device, for receiving request message, the contention access period before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, to the second equipment, send the information that includes time stamp;
The second equipment, for including the information of time stamp described in receiving, synchronizes with described Mediation Device according to described time stamp, uses the time slot that guarantees of self in current superframe to communicate.
The contention access period of the embodiment of the present invention before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, the information that includes time stamp is provided, equipment can be synchronizeed with coordinator in current superframe, and do not need to wait until next superframe, greatly reduce communication delay, guaranteed the communication quality of business that communication delay is had relatively high expectations.
Accompanying drawing explanation
Fig. 1-1 is the superframe structure schematic diagram one of the beacon interval of prior art;
Fig. 1-2 is the superframe structure schematic diagram two of the beacon interval of prior art;
Fig. 2 is the flow chart of the embodiment of the present invention one synchronization processing method;
Fig. 3 is the flow chart of the embodiment of the present invention two synchronization processing methods;
Fig. 4 is the flow chart of the embodiment of the present invention three synchronization processing methods;
Fig. 5 is the sequential schematic diagram of the embodiment of the present invention three synchronization processing methods;
Fig. 6 is the flow chart of the embodiment of the present invention four synchronization processing methods;
Fig. 7 is the sequential schematic diagram of the embodiment of the present invention four synchronization processing methods;
Fig. 8 is the flow chart of the embodiment of the present invention five synchronization processing methods;
Fig. 9 is a sequential schematic diagram of the embodiment of the present invention five synchronization processing methods;
Figure 10 is another sequential schematic diagram of the embodiment of the present invention five synchronization processing methods;
Figure 11 is the flow chart of the embodiment of the present invention six synchronization processing methods;
Figure 12 is the sequential schematic diagram of the embodiment of the present invention six synchronization processing methods;
Figure 13 is the schematic diagram of clocking error;
Figure 14 is the schematic diagram of the assurance slot time that uses in the embodiment of the present invention six synchronization processing methods;
Figure 15 is the structural representation of embodiment of the present invention Mediation Device;
Figure 16 is the structural representation of embodiment of the present invention equipment;
Figure 17 is the structural representation of embodiment of the present invention System of Synchronous Processing;
Figure 18 be the embodiment of the present invention synchronization processing method beacon interval comprise a plurality of superframe structures under sequential schematic diagram.
Embodiment
Below by drawings and Examples, the technical scheme of the embodiment of the present invention is described in further detail.
Fig. 2 is the flow chart of the embodiment of the present invention one synchronization processing method, as shown in Figure 2, specifically comprises the steps:
Step 101, reception request message;
Step 102, the contention access period before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, send the information that includes time stamp.
In the present embodiment, after receiving request message, contention access period before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, transmission includes the information of time stamp, equipment can be synchronizeed with coordinator in current superframe, and do not need to wait until next beacon interval, greatly reduce communication delay, guaranteed the communication quality of business that communication delay is had relatively high expectations.
Fig. 3 is the flow chart of the embodiment of the present invention two synchronization processing methods, as shown in Figure 3, specifically comprises the steps:
Step 201, the contention access period before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, receive the information of the time stamp obtaining according to request message;
Step 202, according to time stamp, synchronize with coordinator, use the time slot that guarantees of self in current superframe to communicate.
In the present embodiment, contention access period before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, according to time stamp, synchronize with coordinator, use the time slot that guarantees of self in current superframe to communicate, and do not need to wait until next beacon interval, and greatly reduce communication delay, guaranteed the communication quality of business that communication delay is had relatively high expectations.
Fig. 4 is the flow chart of the embodiment of the present invention three synchronization processing methods, and Fig. 5 is the sequential schematic diagram of the embodiment of the present invention three synchronization processing methods, and the present embodiment is directed to the known equipment that self guarantees time slot.As shown in Figure 4 and Figure 5, the present embodiment specifically comprises the steps:
Step 301, equipment send synchronization request message to coordinator;
Known self the assurance time slot of this equipment, when not hearing beacon, fails to synchronize with coordinator by monitoring beacon, to coordinator, sends synchronization request message immediately, and the present embodiment is in the 0th time slot transmission synchronization request message.
Step 302, coordinator receive synchronization request message, and the contention access period before the assurance time slot of current superframe or non-competing access period, the present embodiment is specially at the 9th time slot, send the information that comprises time stamp to this equipment;
Step 303, equipment receive after this information that comprises time stamp, according to time stamp, synchronize with coordinator, re-use the assurance time slot (the 14th and 15 time slot) of self in current superframe and communicate.
Above-mentioned steps 301 and step 303 be take equipment as executive agent, can be used as an embodiment of the synchronization processing method of equipment; Step 302 be take coordinator as executive agent, can be used as an embodiment of coordinator's synchronization processing method.
In the present embodiment, when the known equipment that self guarantees time slot is failed when monitoring beacon and synchronize with coordinator, to coordinator, send synchronization request message, coordinator sends the relevant information of time stamp before the assurance time slot of current superframe to equipment, equipment just can be synchronizeed with coordinator according to the time stamp obtaining before the assurance time slot of self, and then just can use assurance time slot at current superframe, and do not need to wait until next beacon interval, greatly reduce communication delay, guaranteed the communication quality of business that communication delay is had relatively high expectations.
Fig. 6 is the flow chart of the embodiment of the present invention four synchronization processing methods, Fig. 7 is the sequential schematic diagram of the embodiment of the present invention four synchronization processing methods, in the present embodiment, equipment sends and guarantees time slot request command and receive the response message that coordinator returns to coordinator, but equipment is not known the relevant information that guarantees time slot.As shown in Figure 6 and Figure 7, the present embodiment specifically comprises the steps:
Step 401, equipment send the request message that guarantees time slot relevant information to coordinator;
This equipment in the situation that do not know the relevant information that guarantees time slot, can not be synchronizeed with coordinator by monitoring beacon, to coordinator, sends immediately the request message of assurance time slot relevant information, and the present embodiment sends this request message at the 0th time slot.
Step 402, coordinator receive the request message that guarantees time slot relevant information, judge whether to the devices allocation that sends this request message, to guarantee time slot, if so, perform step 403; Otherwise, execution step 404;
Contention access period before the assurance time slot of current superframe of step 403, coordinator or non-competing access period, the present embodiment is specially the 9th time slot, to equipment, send and include the information (representing with M1 in Fig. 7) that guarantees gap information and time stamp, execution step 405;
Step 404, coordinator, in current superframe period, send to equipment the notification message that application guarantees time slot failure, execution step 406;
Step 405, equipment receive and include the information that guarantees gap information and time stamp, synchronize, then according to guaranteeing gap information, use the assurance time slot (the 14th and 15 time slot) of self in current superframe to communicate according to time stamp with coordinator, finish;
Step 406, equipment receive the notification message that application guarantees time slot failure, finish; This step makes equipment can again ask to guarantee in time time slot.
Above-mentioned steps 401,405 and 406 be take equipment as executive agent, can be used as an embodiment of the synchronization processing method of equipment; Step 402,403 and 404 be take coordinator as executive agent, can be used as an embodiment of coordinator's synchronization processing method.
In the present embodiment, when the unknown self guarantees that the equipment of time slot fails to synchronize with coordinator by monitoring beacon, to coordinator, send the request message that guarantees time slot relevant information, if coordinator judges and guarantees time slot to this devices allocation, before the assurance time slot of current superframe, to equipment, send the relevant information that guarantees gap information and time stamp, equipment just can be synchronizeed with coordinator according to the time stamp obtaining before the assurance time slot of self, and then just can use assurance time slot at current superframe, and do not need to wait until next beacon interval; If coordinator does not judge and does not guarantee time slot to this devices allocation, at current superframe, to equipment, send the notification message that application guarantees time slot failure period, the equipment that can not affect asks to guarantee time slot in time again.Therefore, the present embodiment greatly reduces communication delay, has guaranteed the communication quality of business that communication delay is had relatively high expectations.
Fig. 8 is the flow chart of the embodiment of the present invention five synchronization processing methods, Fig. 9 is a sequential schematic diagram of the embodiment of the present invention five synchronization processing methods, Figure 10 is another sequential schematic diagram of the embodiment of the present invention five synchronization processing methods, as shown in Fig. 8, Fig. 9 and Figure 10, the present embodiment specifically comprises the steps:
Step 501, more than one the first equipment send and have obtained the notification message that guarantees time slot relevant information to coordinator;
This first equipment sends and guarantees time slot request command to coordinator, and receives the response message that coordinator returns, and has obtained the assurance time slot relevant information of self by monitoring beacon; As shown in Figure 9, the present embodiment can, in the contention access period of current superframe (the 0th time slot and the 1st time slot), be sent and obtain the notification message (representing with M3 in figure) that guarantees time slot relevant information to coordinator by competitive way; As shown in figure 10, the present embodiment also can set in advance one period of specific period, this specific period, before non-competing access period of current superframe, sends and has obtained the notification message (representing with M3 in figure) that guarantees time slot relevant information to coordinator in the specific period.When sending this notification message in the specific period, do not need and the competition of other information, and be convenient to coordinator and be familiar with this notification message.
Step 502, coordinator receive the more than one notification message that guarantees time slot relevant information that obtained that above first equipment sends, judge and do not obtain the second equipment that guarantees time slot relevant information, and the assurance time slot relevant information (representing with M2 in figure) of this second equipment;
Step 503, coordinator further judge whether to the second devices allocation, to guarantee time slot, if so, perform step 504; Otherwise, execution step 505;
Contention access period before the assurance time slot of current superframe of step 504, coordinator or non-competing access period, the present embodiment is specially the 9th time slot, to the second equipment, send and include the information (representing with M1 in figure) that guarantees gap information and time stamp, execution step 506;
Step 505, coordinator, in current superframe period, send to the second equipment the notification message that application guarantees time slot failure, execution step 507;
Step 506, the second equipment receive and include the information that guarantees gap information and time stamp, synchronize, then according to guaranteeing gap information, use the assurance time slot (the 14th and 15 time slot) of self in current superframe to communicate according to time stamp with coordinator, finish;
Step 507, the second equipment receive the notification message that application guarantees time slot failure, finish; This step makes the second equipment can again ask to guarantee in time time slot.
Above-mentioned steps 501,506 and 507 be take equipment as executive agent, can be used as an embodiment of the synchronization processing method of equipment; Coordinator be take as executive agent in step 502～505, can be used as an embodiment of coordinator's synchronization processing method.
In the present embodiment, the first equipment of known assurance time slot relevant information sends a notification message to coordinator, makes coordinator can know the known assurance time slot of which equipment relevant information, the unknown time slot relevant information that guarantees of which equipment; Further, if coordinator judges and guarantees that to unknown the devices allocation of time slot relevant information guarantees time slot, send the relevant information that guarantees gap information and time stamp before the assurance time slot of current superframe, to this equipment, this equipment just can be synchronizeed with coordinator according to the time stamp obtaining before the assurance time slot of self, and then just can use assurance time slot at current superframe, and do not need to wait until next beacon; If coordinator does not judge to the unknown devices allocation assurance time slot that guarantees time slot relevant information, at current superframe, send the notification message that application guarantees time slot failure to this equipment period, can not affect this equipment and again ask to guarantee in time time slot.Therefore, the present embodiment greatly reduces communication delay, has guaranteed the communication quality of business that communication delay is had relatively high expectations.
Figure 11 is the flow chart of the embodiment of the present invention six synchronization processing methods, and Figure 12 is the sequential schematic diagram of the embodiment of the present invention six synchronization processing methods, and the present embodiment is directed to the known equipment that self guarantees time slot.As shown in Figure 11 and Figure 12, the present embodiment specifically comprises the steps:
Step 601, equipment send synchronization request message to coordinator in self assurance time slot in current superframe;
Known self the assurance time slot of this equipment, when not hearing beacon, fails to synchronize with coordinator by monitoring beacon,, according to the time slot arrangement of the superframe of self preservation, in current superframe, in the assurance time slot of self, to coordinator, sends synchronization request message.The time slot that guarantees of the present embodiment equipment self is 11st～13 time slots, at the 11st time slot, sends synchronization request message.
Step 602, coordinator receive synchronization request message, send the information that comprises time stamp immediately to this equipment;
Step 603, equipment receive after this information that comprises time stamp, according to time stamp, synchronize with coordinator, and communicate the remaining time (the 12nd and 13 time slot) that re-uses the assurance time slot of self in current superframe.
In the present embodiment, because equipment temporarily fails to synchronize with coordinator, so there will be clocking error between the two, Figure 13 is the schematic diagram of clocking error, as shown in figure 13, for single assurance time slot, fast clock is maximum clock error with the difference of partially slow clock.If there is clocking error between equipment and coordinator, in initial time and finish time of the assurance time slot of judging according to equipment local clock, can not determine that coordinator is also in this assurance time slot, be not therefore in this assurances time slot if having time can be by re-synchronization.Figure 14 is the schematic diagram of the assurance slot time that uses in the embodiment of the present invention six synchronization processing methods; as shown in figure 14; owing to there being maximum clock error; to guarantee that the beginning of time slot and the time of ending maximum clock error length are constantly as protection interval, the middle time be the time of equipment and the operable assurance time slot of coordinator.
Above-mentioned steps 601 and 603 be take equipment as executive agent, can be used as an embodiment of the synchronization processing method of equipment; Step 602 be take coordinator as executive agent, can be used as an embodiment of coordinator's synchronization processing method.
In the present embodiment, when the known equipment that self guarantees time slot is failed when monitoring beacon and synchronize with coordinator, in current superframe, in the assurance time slot of self, to coordinator, send synchronization request message, coordinator sends the relevant information of time stamp immediately to equipment, equipment is synchronizeed with coordinator according to the time stamp obtaining, in current superframe, in the remaining time of the assurance time slot of self, can use assurance time slot, and do not need to wait until next beacon interval, greatly reduce communication delay, guaranteed the communication quality of business that communication delay is had relatively high expectations.
In the synchronization processing method of above embodiment, be all that the superframe structure of the beacon interval (BeaconInterval) based on shown in Fig. 1-1 is example, the sequential schematic diagram of the synchronization processing method of the embodiment of the present invention is described.For, the synchronization processing method of above-described embodiment, goes for the situation that beacon interval comprises a plurality of superframe structures equally, in the situation such as Fig. 1-2.As shown in figure 18, for the synchronization processing method of the embodiment of the present invention beacon interval comprise a plurality of superframe structures under sequential schematic diagram.
As shown in figure 18, known oneself the equipment of assurance time slot, if find not hear beacon, fail to synchronize with coordinator by monitoring beacon, to coordinator, send synchronous request command, if do not receive coordinator's response, also can repeatedly send several times this synchronous request command.
If coordinator receives this synchronous request command, the contention access period before time slot starts of guaranteeing of this equipment or non-competing access period in current superframe structure, to this equipment, send an information that comprises time stamp.
Equipment is received after this information, first according to the time stamp in information, synchronize with coordinator, the interim assurance time slot of distributing to it while re-using the own residue superframe structure starting from current superframe non-competing access in current beacon interval, and in each superframe structure of each beacon interval, identical assurance time slot is used by this equipment afterwards, until this equipment or coordinator initiate program, this is guaranteed to time slot deletion.
Figure 15 is the structural representation of embodiment of the present invention Mediation Device, and the present embodiment can be the coordinator in above-mentioned synchronization processing method embodiment.As shown in figure 15, the present embodiment comprises the first receiver module 11 and the first sending module 12, wherein the first receiver module 11 receives request message, the request message that the first sending module 12 receives according to the first receiver module 11, contention access period before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, send the information that includes time stamp.
The present embodiment can also comprise the first judge module 13 and the second sending module 14, wherein the first judge module 13 judges whether to devices allocation, to guarantee time slot, this equipment can be the equipment sending a request message, and can be also the equipment obtaining according to the equipment sending a request message.If the first judge module 13 is judged while guaranteeing time slot to devices allocation, the contention access period of the first sending module 12 before the assurance time slot of current superframe or non-competing access period, to this equipment, send and include the information that guarantees gap information and time stamp; If the first judge module 13 is judged while not guaranteeing time slot to devices allocation, the second sending module 14, in current superframe period, sends to this equipment the notification message that application guarantees time slot failure.
When request message be that more than one the first equipment sends obtain the notification message that guarantees time slot relevant information time, the present embodiment can comprise the second judge module 15, wherein the second judge module 15 is according to the first equipment, judge and do not obtain the second equipment that guarantees time slot relevant information, and the assurance time slot relevant information of the second equipment.The first judge module 13 judges whether to the second devices allocation, to guarantee time slot, if the first judge module 13 is judged while guaranteeing time slot to the second devices allocation, the contention access period of the first sending module 12 before the assurance time slot of current superframe or non-competing access period, to the second equipment, send and include the information that guarantees gap information and time stamp; If the first judge module 13 is judged while not guaranteeing time slot to the second devices allocation, the second sending module 14, in current superframe period, sends to the second equipment the notification message that application guarantees time slot failure.
In the present embodiment, when the first receiver module receives after request message, the contention access period of the first sending module before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, transmission includes the information of time stamp, equipment can be synchronizeed with coordinator in current superframe, and do not need to wait until next beacon interval, greatly reduce communication delay, guaranteed the communication quality of business that communication delay is had relatively high expectations.
Figure 16 is the structural representation of embodiment of the present invention equipment.As shown in figure 16, the present embodiment comprises the second receiver module 21 and synchronous communication module 22, wherein the contention access period of the second receiver module 21 before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, receive the information that includes time stamp of obtaining according to request message; Synchronous communication module 22 is synchronizeed with Mediation Device according to time stamp, uses the time slot that guarantees of self in current superframe to communicate.
The present embodiment can also comprise that the 3rd sending module 23, the three sending modules 23 send a request message.Further, if send synchronization request message in self assurance time slot of the 3rd sending module 23 current superframes, synchronous communication module 22 is used communicate the remaining time of the assurance time slot of self in current superframe.
The present embodiment can also comprise the 3rd receiver module 24, and when Mediation Device guarantees time slot to this devices allocation, the 3rd receiver module 24 receives the notification message that application guarantees time slot failure; When Mediation Device guarantees time slot to devices allocation, the second receiver module 21 receives and includes the information that guarantees gap information and time stamp.
In the present embodiment, contention access period before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, according to time stamp, synchronize with coordinator, use the time slot that guarantees of self in current superframe to communicate, and do not need to wait until next beacon interval, and greatly reduce communication delay, guaranteed the communication quality of business that communication delay is had relatively high expectations.
Figure 17 is the structural representation of embodiment of the present invention System of Synchronous Processing.As shown in figure 17, the present embodiment comprises Mediation Device 1 and the second equipment 2, wherein Mediation Device receives request message, contention access period before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, to the second equipment 2, send the information that includes time stamp; The second equipment 2 receives the information that includes time stamp, according to time stamp, synchronizes with Mediation Device, uses the time slot that guarantees of self in current superframe to communicate.
The present embodiment can also comprise more than one the first equipment, as the first equipment 31, the first equipment 32 and the first equipment 33, these first equipment send and have obtained the notification message that guarantees time slot relevant information to Mediation Device 1, this notification message that Mediation Device 1 receives according to the first receiver module 11, judges unknown the second equipment 2 that guarantees time slot relevant information.
Further, in the present embodiment, Mediation Device 1 can be the arbitrary Mediation Device described in the invention described above embodiment Mediation Device, and the second equipment 2 can be the arbitrary equipment described in the invention described above embodiment equipment.
In the present embodiment, Mediation Device 1 is according to the request message receiving, contention access period before the assurance time slot of current superframe or non-competing access period, or in the assurance time slot of current superframe, to the second equipment 2, send the information that includes time stamp, the second equipment 2 is synchronizeed with coordinator according to time stamp, use the time slot that guarantees of self in current superframe to communicate, and do not need to wait until next beacon interval, greatly reduce communication delay, guaranteed the communication quality of business that communication delay is had relatively high expectations.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computer read/write memory medium, this program is when carrying out, execution comprises the step of said method embodiment, and aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Finally it should be noted that: above embodiment only, in order to the technical scheme of the embodiment of the present invention to be described, is not intended to limit; Although the embodiment of the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the embodiment of the present invention.
Claims (10)
1. a synchronization processing method, is characterized in that comprising:
Receive request message, wherein, described request message is for guaranteeing the request message of time slot relevant information;
Coordinator judges whether to the devices allocation that sends described request message, to guarantee time slot;
If so, the contention access period before the assurance time slot of current superframe or non-competing access period, send the information that includes time stamp, so that described equipment is synchronizeed with coordinator at described current superframe.
2. synchronization processing method according to claim 1, is characterized in that, described reception request message is specially: coordinator receives the notification message that obtains assurance time slot relevant information that above first equipment sends;
After described reception request message, also comprise: described coordinator, according to described described the first equipment that guarantees time slot relevant information that obtained, judges the second equipment that guarantees time slot relevant information that do not obtain;
If described coordinator guarantees time slot to described the second devices allocation, the contention access period before the assurance time slot of current superframe or non-competing access period, to the second equipment, send and include the information that guarantees gap information and time stamp.
3. a synchronization processing method, is characterized in that comprising:
Equipment sends the request message that guarantees time slot relevant information to coordinator;
Contention access period before the assurance time slot of current superframe or non-competing access period, reception includes the information of time stamp, according to described time stamp, synchronize with coordinator, use the time slot that guarantees of self in described current superframe to communicate, wherein, the information that includes time stamp described in is that described coordinator sends to described equipment when judgement guarantees time slot to described devices allocation.
4. synchronization processing method according to claim 3, it is characterized in that, if described request message is for obtaining the notification message that guarantees time slot relevant information, the information that described reception includes time stamp also comprises before: above first equipment sends and obtained the notification message that guarantees time slot relevant information to coordinator;
The information that described reception includes time stamp is specially: when coordinator guarantees time slot to the second devices allocation, the second equipment receives and includes the information that guarantees gap information and time stamp.
5. synchronization processing method according to claim 4, is characterized in that, described above first equipment sends to have obtained to coordinator and guarantees that the notification message of time slot relevant information is specially:
At the contention access of current superframe, in period, described above first equipment sends and has obtained the notification message that guarantees time slot relevant information to coordinator;
Or within the specific period of current superframe, described above first equipment sends and has obtained the notification message that guarantees time slot relevant information to coordinator; The described specific period is before non-competing access period.
6. a Mediation Device, is characterized in that comprising:
The first receiver module, for receiving request message, wherein, described request message is for guaranteeing the request message of time slot relevant information;
The first judge module, guarantees time slot to devices allocation for judging whether;
The first sending module, while guaranteeing time slot to described devices allocation for judging when described the first judge module, the request message receiving according to described the first receiver module, contention access period before the assurance time slot of current superframe or non-competing access period, transmission includes the information of time stamp, so that equipment is synchronizeed with described Mediation Device at described current superframe.
7. Mediation Device according to claim 6, it is characterized in that, when described request message be that more than one the first equipment sends obtain the notification message that guarantees time slot relevant information time, described Mediation Device also comprises: the second judge module, for according to described the first equipment, judge the second equipment that guarantees time slot relevant information that do not obtain;
Described the first judge module judges whether to the second devices allocation, to guarantee time slot.
8. a synchronizer, is characterized in that comprising:
The 3rd sending module, for sending a request message, wherein, described request message is for guaranteeing the request message of time slot relevant information;
The second receiver module, for contention access period before the assurance time slot of current superframe or non-competing access period, the information that includes time stamp that reception is obtained according to described request message, wherein, the information that includes time stamp described in is that described coordinator sends to described equipment when judgement guarantees time slot to described devices allocation;
Synchronous communication module, for synchronizeing with Mediation Device according to described time stamp, is used the time slot that guarantees of self in described current superframe to communicate.
9. a System of Synchronous Processing, is characterized in that comprising:
Mediation Device, be used for receiving request message, when the devices allocation assurance time slot that sends described request message has been given in judgement, contention access period before the assurance time slot of current superframe or non-competing access period, to the second equipment, send the information that includes time stamp, wherein, described request message is for guaranteeing the request message of time slot relevant information;
The second equipment, for including the information of time stamp described in receiving, synchronizes with described Mediation Device according to described time stamp, uses the time slot that guarantees of self in described current superframe to communicate.
10. System of Synchronous Processing according to claim 9, characterized by further comprising: above first equipment, for sending described request message to Mediation Device; Described request message is for obtaining the notification message that guarantees time slot relevant information.
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