CN101753240A - Time programming method applied to wireless network - Google Patents
Time programming method applied to wireless network Download PDFInfo
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- CN101753240A CN101753240A CN200810184532A CN200810184532A CN101753240A CN 101753240 A CN101753240 A CN 101753240A CN 200810184532 A CN200810184532 A CN 200810184532A CN 200810184532 A CN200810184532 A CN 200810184532A CN 101753240 A CN101753240 A CN 101753240A
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Abstract
The invention provides to a time programming method applied to wireless network, which comprises that a unit time is selected on a channel with a main communication unit at random, the unit time is uniformly divided into a first time slot and a plurality of second time slots, the main communication unit and an auxiliary communication unit transfers and receives a signal of wireless transmission within the first time slot and the second time slots of the unit time, and then the main communication unit transfers and sends the signal of wireless communication within each time slot according to the result of time programming together with at least one auxiliary main communication unit.
Description
Technical field
The invention provides a kind of time programming method that is applied to low-speed wireless personal network, the planing method of slot length and time slot number when particularly relating to a kind of application settings.
Background technology
Being widely used of wireless network in the prior art, lift as: mobile phone by telco provider base station and other people carry out communication; PDA(Personal Digital Assistant) or notebook computer are connected to world-wide web by the wireless network server, send and receive e-mail or search data to each big Search engine; And for example personal navigation apparatus (PND) is obtained mapping intelligence by the wireless network server, to the destination of being desired etc., all belongs to the application example of wireless network with the guiding user.
In addition, has a kind of low-speed wireless personal network that is called in the radio network technique at present, low transmission rate (reaching as high as 250kbps), short distance (1-100 meter are provided, generally be about 10 meters), low consumpting power, the simple data wireless transmission technology of framework, range of application comprises that family is saved from damage, household remote for example air-conditioning, light, TV etc., and factory automation and far-end supervision, building automation, health of human body, consumer electronics, computer peripheral and house control etc., and receive a lot of attention.
The employed wireless transmission channel of described low-speed wireless personal network is to see through the channel (for example 868MHz channel in the ISM channel of general international 2.4GHz, Europe, and three channels of the 915MHz channel of the U.S.) of exempting to apply for a license; But, because of present stage uses the user of the above-mentioned channel of exempting to apply for a license numerous, the mass data transmission is arranged in the channel, cause and use the congested problem that influences the line quality of channel, need badly and improved.
Summary of the invention
For effectively overcoming in the above-mentioned prior art, exempt from the congested problem of licensed frequency channels, the invention provides a kind of time programming method that is applied to wireless network, comprise:
Use a main communication unit one unit interval of picked at random on a channel, and to divide equally the described unit interval be one first time slot and a plurality of second time slot; And
Utilize a described main communication unit and a secondary communication unit, the signal that carries out wireless telecommunications in first and second time slot of described unit interval transmits and receives.
In view of the above, described main communication unit is according to the result of time planning, and the signal that carries out wireless telecommunications with the main communication unit of at least one pair in each time slot transmits and receives, to realize enhancing the purpose of signal transmission efficiency and stability.
In addition, the present invention also comprises:
Described first time slot is defined as a main flag time slot, is regularly to send in the unit interval between the given period of a main flag news frame use.
Described second time slot is defined as a less important flag time slot, for transmission in the unit interval or receive a signal.
Described unit interval length is that two main flags that main communication unit transmits are interrogated the time between frames.
Time slot number in the described unit interval is a preset value.
The length of described time slot is a preset value.
Described time slot is divided into an execution cycle, a dormancy period, a flag cycle and a preparation cycle.
The described execution cycle is that described main communication unit receives the data traffic frame that described secondary communication unit transmits or the cycle of an order news frame, and the described execution cycle is that described secondary communication unit transmits a data traffic frame or the order news frame cycle to described main communication unit.
Described dormancy period is the cycle of no special pending incident, and described main communication unit and described secondary communication unit enter a park mode in dormancy period.
The described flag cycle is the cycle that described main communication unit sends flag news frame, and the flag cycle is the cycle that described secondary communication unit receives flag news frame.
Described main communication unit or secondary communication unit are carried out one and are opened the reception action in advance in the described preparatory period.
Described action of opening reception in advance is the receiving terminal of described signal or described news frame, before the time slot border that receives described signal or described news frame, opens in advance and receives data, and described time span of opening reception in advance is a lead time.
The present invention also provides a kind of time programming method that is applied to wireless network, and it comprises:
Use a main communication unit one unit interval of picked at random on a channel, and to divide equally the described unit interval be one first time slot and a plurality of second time slot; And
Utilize a described main communication unit and a secondary communication unit, the signal that carries out wireless telecommunications in first and second time slot of described unit interval transmits and receives.
Compared with prior art, the time programming method that is applied to wireless network of the present invention, can be under the different user demand of wireless telecommunication system, time span and the number of complying with the demand unit of adjustment time slot of described system realize the requirement of system, and then enhance the line quality of wireless telecommunication system and the reliability of signal transmission.
Description of drawings
Fig. 1 is the schematic diagram of time planning of the present invention;
Fig. 2 is the schematic diagram of time slot of the present invention;
Fig. 3 enters the schematic diagram of service state for time slot of the present invention.
Embodiment
See also shown in Figure 1, disclose and the invention provides a kind of schematic diagram that is applied to the time programming method of wireless network, use a main communication unit one unit interval 11 of picked at random on a channel at present embodiment, and to divide equally the described unit interval 11 be one first time slot 111 and a plurality of second time slot 112, described first time slot 111 is defined as a main flag time slot, is regularly to send in the described unit interval 11 between the given period of a main flag news frame 10 uses; Described second time slot 112 is defined as a less important flag time slot, for transmission in described unit interval 11 or receive that a signal uses during; After a described main communication unit and a secondary communication unit entered service state, the signal that carries out wireless telecommunications in first time slot 111 of described unit interval 11 and second time slot 112 transmitted and receives.
In view of the above, described main communication unit can be realized the transmission of wireless signal and the purpose of reception according to the result of time planning on a use channel.
In addition, the present invention also comprises:
Described unit interval 11 length is that two main flags that described main communication unit transmits are interrogated the time between frames.
Time slot number in the described unit interval 11 is a preset value; The length of described time slot is a preset value.
When the length of unit interval 11 is fixed, divide equally the described unit interval 11 with the time slot (slot) of a Preset Time length, then the length of each time slot is called a time slot section 12, described time slot section 12 length calculation modes (as shown in Figures 1 and 2) as follows:
One time slot section 12=, one unit interval 11/ time slot number
Therefore, the Preset Time length of described time slot is short more, and then the time slot number in the unit interval 11 is many more, otherwise the Preset Time length of described time slot is long more, and then the time slot number in the unit interval 11 is few more.
When the time slot number is fixed, be arranged in the unit interval 11 each unit interval 11 length calculation mode (as shown in Figures 1 and 2) as follows so that the time slot of a Preset Time length is described:
One unit interval 11=, one time slot section 12X time slot number
Therefore, the Preset Time length of described time slot is short more, and then the time span of unit interval 11 is short more, otherwise the Preset Time length of described time slot is long more, and then the time span of unit interval is long more.
Described time slot is divided into an execution cycle 211, a dormancy period 212, a flag cycle 213 and a preparation cycle 214.
The described execution cycle 211 is that described main communication unit receives the data traffic frame 22 that described secondary communication unit transmits or the cycle of an order news frame 23, and the described execution cycle 211 is that described secondary communication unit transmits described data traffic frame 22 or described order news frame 23 cycle (as Fig. 1 or shown in Figure 2) to described main communication unit.
Described dormancy period 212 is cycles of no special pending incident, and described main communication unit and described secondary communication unit enter a park mode in dormancy period.
The described flag cycle 213 is cycles that described main communication unit sends a flag signals 21, and the described flag cycle 213 is cycles (as shown in Figure 2) that described secondary communication unit receives described flag signals 21.
Described main communication unit or described secondary communication unit are carried out one and are opened the reception action in advance in the described preparatory period 214, described action of opening reception in advance is the receiving terminal of described signal or described data traffic frame 22, before the time slot border that receives described signal or described news frame, open in advance and receive data, described time span of opening reception in advance is a lead time 221.
Described time slot is after described main communication unit is opened the flow process success via a service, enter service state immediately, described time slot can be cut into an execution cycle 211, a dormancy period 212, a flag cycle 213 and 214 4 kinds of preparation cycles (as shown in Figure 3) after entering described service state, and foundation following A to D order each cycle of taking turn:
A. flag cycle 213: be that described main communication unit sends described flag signals 21 in the described flag cycle 213.
B. execution cycle 211: be that main communication unit is in the described execution cycle 211, receive described data traffic frame 22 or described order news frame 23 that described secondary communication unit transmits, wherein, described main communication unit is listened to the siding-to-siding block length of the data that described secondary communication unit transmits, from a period of time trough rim circle 121 start at, for just listening 222 (as shown in Figure 2) during the command fetch.
C. dormancy period 212: pending when no special incident, described main communication unit can enter energy saver mode to save electrical source consumption in dormancy period.
D. preparatory period 214: when described main communication unit does not transmit described flag signals 21 at next time slot, main communication unit is opened in the preparatory period ahead of time, to receive the data that secondary communication unit transmits.
Described time slot is after described secondary communication unit is opened the success of search flow process via one, enter service state immediately, described time slot can be cut into an execution cycle, a dormancy period, a flag cycle and four kinds of preparation cycles (as shown in Figure 3) after entering described service state, and foundation following A to D order each cycle of taking turn:
A. flag cycle 213: described secondary communication unit receives described flag signals 21 in the described flag cycle 213, described secondary communication unit is waited for the siding-to-siding block length of listening to described flag signals 21, from a period of time trough rim circle 121 start at, be to listen to flag interval 223 (as shown in Figure 2).
B. execution cycle 211: described secondary communication unit can optionally transmit described data traffic frame 22 or order news frame 23 in the described execution cycle 211, free of data or order news frame need transmit in the described execution cycle 211, can enter energy saver mode ahead of time to save electrical source consumption.
C. dormancy period 212: pending when no special incident, described secondary communication unit can enter energy saver mode to save electrical source consumption in dormancy period.
D. preparatory period 214: will transmit when next time slot has described flag signals 21, described secondary communication unit should be opened in advance in the described preparatory period 214, described action of opening in advance is to overcome between described main communication unit and the described secondary communication unit, because of the caused time error of its oscillating element difference, receiving terminal must be before the time slot border 121 of described received signal, open receiver in advance in order to avoid missing data, this siding-to-siding block length of opening in advance is a lead time 221, if the next flag cycle does not have flag signals and need receive, then secondary communication unit can enter energy saver mode to save electrical source consumption (as shown in Figure 2).
In addition, the designer can the Request for Change bit time or the time span of unit time slot, or the time slot number of unit of adjustment's time 11, or the time span in interior each cycle of taking turn of unit time slot, to meet the needs of various system-operating environments, lift as a wireless telecommunication system transmitted data amount lower, but transmission instantaneity demand is higher, and the channel average operating of the environment for use at described communication system place is in congestion state, the designer can shorten the time span of unit interval, and the time slot number in the increase unit interval, and the time in minimizing unit each cycle of time slot taking turn, so that the times to be transmitted such as described communication system minimizing, and reduce the required time of synchronous correction, and then the requirement of the system of realization.
Again for example, another wireless telecommunication system transmitted data amount is bigger, but transmission instantaneity demand low designer can increase the time span of unit time slot, the time in unit each cycle of time slot taking turn also increases simultaneously, so that described communication system obtains the long transmission time, and reduce the leakage situation that takes place with received signal that transmits, and then the requirement of the system of realization.
The factor that influences described wireless telecommunication system function in the present embodiment is numerous, the designer mainly with following influencing factor for mainly considering:
(1) communication system is judged the synchronous line required time extremely again of forfeiture
Described communication system judges that the synchronous condition of forfeiture is the number of times of missing main flag signals with the secondary communication unit of described communication system, miss the main flag signals of twice described main communication unit continuously when described secondary communication unit, described system could judge that forfeiture synchronously, and described main flag signals is that the main flag time slot of per unit time sends once, therefore the time of described unit interval is long more, when taking place to lose synchronous situation between the communication unit of described communication system, described communication system finds that the synchronous time of communication unit forfeiture is slow more, it is long more to recover synchronous required time between each communication unit of described communication system, so time slot number in the unit interval or the change of the time span of time slot, the time span of described unit interval is change thereupon also.
(2) power system capacity of communication system
The subnet number that holds under same environment when communication system is many more, the required capacity of then described communication system is big more, because of different subnets all must carry out under the situation of synchronous communication, the main flag time slot of each subnet all must stagger, and when the open ended subnet number of the described more at most communication system of time slot number many more, so the capacity of described communication system is big more.
(3) communication system transmits the length of data
Transmit data between each communication unit of communication system and need regular hour length, and possibility life period deviation between each communication unit, for realizing described communication system data transmission success, the time span of unit time slot can not be too short, otherwise will push the time of transfer of data.
(4) energy of communication unit is supplied with restriction
The time span of being learnt the described unit interval by factor 1 is the smaller the better, learn that by factor (2) the time slot number is The more the better, but described thus time slot section is down fixing in the unit interval, along with the time slot number increases, then the time span of unit time slot is just more little, then can for the transmission data time will with dwindle, then must dwindle dormancy period unit time slot in if be reluctant to dwindle the time of transmitting data this moment, but each communication unit dormancy time tails off thus, and then therefore the power consumption of each communication unit heighten.
(5) the line quality of communication system
The line quality better of communication system depends primarily on the success rate of system transmissions data, and the data that transmitted when between each communication unit of communication system are oversize, and then the system response of communication system may be slack-off or the power consumption quantitative change is big, and cause the capacity of system to diminish.
From the above, the design parameter and the factor that influence communication system are various, and each parameter also interacts each other, allocate according to system requirements are compromise voluntarily with the designer entirely.
In view of the above, time programming method of the present invention, can be under the different user demand of wireless telecommunication system, time span and the number of complying with the demand unit of adjustment time slot of described system realize the requirement of system, and then enhance the line quality of wireless telecommunication system and the reliability of signal transmission.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any those of ordinary skills; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (10)
1. time programming method that is applied to wireless network is characterized in that it comprises:
Use a main communication unit one unit interval of picked at random on a channel, and to divide equally the described unit interval be one first time slot and a plurality of second time slot; Described first time slot is defined as a main flag time slot, is regularly to send in the unit interval between the given period of signal specific use; Described a plurality of second time slot is defined as less important flag time slot, transmits in the unit interval or receives during the signal use; And
Utilize described main communication unit, the signal that carries out wireless telecommunications in the described unit interval transmits and receives.
2. be applied to the time programming method of wireless network according to claim 1, it is characterized in that, described signal specific is a main flag news frame.
3. time programming method that is applied to wireless network is characterized in that it comprises:
Use a main communication unit one unit interval of picked at random on a channel, and to divide equally the described unit interval be one first time slot and a plurality of second time slot; And
Utilize a described main communication unit and a secondary communication unit, the signal that carries out wireless telecommunications in first and second time slot of described unit interval transmits and receives.
4. as being applied to the time programming method of wireless network as described in the claim 3, it is characterized in that described first time slot is defined as a main flag time slot, is regularly to send in the unit interval between the given period of a main flag news frame use.
5. as being applied to the time programming method of wireless network as described in the claim 3, it is characterized in that described second time slot is defined as a less important flag time slot, for transmission in the unit interval or receive that a signal uses during.
6. as being applied to the time programming method of wireless network as described in claim 1 or 3, it is characterized in that described unit interval length is that two main flags that main communication unit transmits are interrogated the time between frames.
7. as being applied to the time programming method of wireless network as described in claim 1 or 3, it is characterized in that the time slot number in the described unit interval is a preset value.
8. as being applied to the time programming method of wireless network as described in claim 1 or 3, it is characterized in that the length of described time slot is a preset value.
9. as being applied to the time programming method of wireless network as described in claim 1 or 3, it is characterized in that described time slot is divided into an execution cycle, a dormancy period, a flag cycle and a preparation cycle.
10. as being applied to the time programming method of wireless network as described in the claim 7, it is characterized in that described time slot is divided into an execution cycle, a dormancy period, a flag cycle and a preparation cycle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810184532A CN101753240A (en) | 2008-12-08 | 2008-12-08 | Time programming method applied to wireless network |
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| CN200810184532A CN101753240A (en) | 2008-12-08 | 2008-12-08 | Time programming method applied to wireless network |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1146833A (en) * | 1995-02-17 | 1997-04-02 | 诺基亚电信公司 | Allocation of time slots in a mobile communication system |
| CN1351807A (en) * | 1999-04-08 | 2002-05-29 | 诺基亚移动电话有限公司 | Rotating synchronization channel (SCH) transmission |
| CN1384681A (en) * | 2001-05-07 | 2002-12-11 | 阿尔卡塔尔公司 | Operation method of radio communiation system |
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2008
- 2008-12-08 CN CN200810184532A patent/CN101753240A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1146833A (en) * | 1995-02-17 | 1997-04-02 | 诺基亚电信公司 | Allocation of time slots in a mobile communication system |
| CN1351807A (en) * | 1999-04-08 | 2002-05-29 | 诺基亚移动电话有限公司 | Rotating synchronization channel (SCH) transmission |
| CN1384681A (en) * | 2001-05-07 | 2002-12-11 | 阿尔卡塔尔公司 | Operation method of radio communiation system |
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Application publication date: 20100623 |