CN103840908A

CN103840908A - Indication information sending method, and data sending method and device

Info

Publication number: CN103840908A
Application number: CN201210478389.1A
Authority: CN
Inventors: 丁志明; 树贵明
Original assignee: Huawei Device Co Ltd
Current assignee: Huawei Device Co Ltd
Priority date: 2012-11-22
Filing date: 2012-11-22
Publication date: 2014-06-04
Anticipated expiration: 2032-11-22
Also published as: CN103840908B

Abstract

The embodiments of the invention provide an indication information sending method, and a data sending method and device. The indication information sending method comprises: starting monitoring a channel from a time slot initial time, if it is monitored that the time slot channel is idle from the time slot initial time to a preset time point, determining that a time slot is idle, and sending time slot idle indication information to at least one site at the preset time point so as to enable a site with data to be sent to use the channel within the residual time of the time slot according to the time slot idle indication information. According to the embodiments of the invention, a channel is monitored from a time slot initial time, and if the time slot channel is idle, time slot idle indication information is sent to a site so as to enable a site with data to be sent to use the channel within the residual time of a time slot according to the time slot idle indication information such that the channel utilization rate and the real time performance of the site in data reporting are improved.

Description

Indication information sending method, data transmission method for uplink and equipment

Technical field

The embodiment of the present invention relates to communication technical field, relates in particular to a kind of indication information sending method, data transmission method for uplink and equipment.

Background technology

The data that site apparatus in WLAN (wireless local area network) reports are mainly divided into two classes, one class is the data of periodically uploading, another kind of is the data of Event triggered, Institute of Electrical and Electric Engineers (Institutefor Electrical and Electronic Engineers at present, hereinafter to be referred as IEEE) to be access point reserve one section of non-competing restriction window turn-on time (Restricted Access Window to the motion accepted of 802.11ah the cycle at a beacon (beacon), hereinafter to be referred as RAW), in this RAW, RAW is divided into time slot (Time Slot) one by one, website is by listening beacon, know it should at which time slot access channel.Before the time slot of distributing to certain website arrives, this website can select dormancy to save electric weight.In the time that the time slot distributing arrives, website is now state of activation, and (Enhanced DistributedChannel Access, is called for short: EDCA) mechanism accesses channel, first keeps out of the way the principle sending again to adopt the enhanced distributed channel access stipulating in IEEE802.11.

But if there is website to have little time to send data at the time slot of oneself, if do not allow the website transmission of crossing the border, the real-time of website reported data is just very poor, channel utilization is low; The transmission if permission website crosses the border, can cause likely having two websites will send the situation of data in a time slot simultaneously, if when certain website takies multiple time slot, also may there is the situation that exceedes two website competitive channels, multiple website competitive channels can bring the problem of hiding website, also cause expending of electric weight simultaneously.

Summary of the invention

The embodiment of the present invention provides a kind of indication information sending method, data transmission method for uplink and equipment, to solve the poor and low problem of channel utilization of the real-time of website reported data, and avoids hiding the problem of website.

First aspect, the embodiment of the present invention provides a kind of indication information sending method, comprising:

Start supervisory channel from time slot initial time;

If time slot channel idle before monitoring from time slot initial time to Preset Time point, judge the described time slot free time, at described Preset Time point to the idle indication information of at least one website sending time slots, so that there is the website that data will send to use channel in the remaining time of described time slot according to the idle indication information of described time slot.

In the possible execution mode of the first of first aspect, do not allow the transmission data of crossing the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, the described competition phase is a period of time that website competition obtains channel;

The described website that has data to send is included in to be assigned and in time slot, does not send the website of data and/or do not assign time slot but the website that has data to send.

In the possible execution mode of the second of first aspect, transmission data allow to cross the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, or start to postpone from described time slot initial time the moment after duration and the duration of a competition phase of a sync period, described sync period is a period of time of website channel synchronization;

In conjunction with the possible execution mode of the second of first aspect, in the third possible execution mode of first aspect, described start supervisory channel from time slot initial time before, described method also comprises:

In the time that the last time slot of current time slots finishes, if indication still has data to send in the Frame receiving, judge that current time slots has the data of crossing the border and sending, do not monitor the channel of current time slots, and at current time slots initial time to the website broadcast transmission indication information that crosses the border, the described indication information that crosses the border is used to indicate the data of crossing the border and sending in current time slots, so that the website that current time slots is assigned does not send data in current time slots;

Describedly start supervisory channel from time slot initial time, be specially:

The data that send if do not cross the border, start supervisory channel.

Second aspect, the embodiment of the present invention provides a kind of data transmission method for uplink, comprising:

The Preset Time point of the each time slot after being assigned time slot receives the idle indication information of time slot that access point sends until data distribute;

According to the idle indication information of described time slot, send data.

In the possible execution mode of the first of second aspect, do not allow the transmission data of crossing the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, the described competition phase is a period of time that website competition obtains channel.

In the possible execution mode of the second of second aspect, transmission data allow to cross the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, or start to postpone from described time slot initial time the moment after duration and the duration of a competition phase of a sync period, described sync period is a period of time of website channel synchronization.

In conjunction with the possible execution mode of the second of second aspect, also comprise:

Be informed in and be assigned the data that have the transmission of crossing the border on time slot;

On time slot, do not send data described being assigned.

In conjunction with the possible execution mode of the second of second aspect, in the third possible execution mode of second aspect, described in be informed in to be assigned and on time slot, have the data of crossing the border and sending, comprising:

Before channel synchronization finishes, described in being informed in, monitoring is assigned the data that have the transmission of crossing the border on time slot.

In conjunction with the third possible execution mode of second aspect, in the 4th kind of possible execution mode of second aspect, described before channel synchronization finishes, described in monitoring is informed in, be assigned on time slot and have the data that send of crossing the border to comprise:

In channel synchronization process, being informed in to be assigned according to the Frame of hearing or acknowledge message has the data of crossing the border and sending on time slot.

In conjunction with the possible execution mode of the second of second aspect, in the 5th kind of possible execution mode of second aspect, described in be informed in to be assigned and on time slot, have the data of crossing the border and sending, comprising:

Receive at the described time slot initial time that is assigned the indication information that crosses the border that access point sends, described in being informed according to the described indication information that crosses the border, be assigned the data that have the transmission of crossing the border on time slot.

The third aspect, the embodiment of the present invention provides a kind of equipment, comprising:

Monitoring modular, for starting supervisory channel from time slot initial time;

Sending module, if for time slot channel idle before monitoring from time slot initial time to Preset Time point, judge the described time slot free time, at described Preset Time point to the idle indication information of at least one website sending time slots, so that there is the website that data will send to use channel in the remaining time of described time slot according to the idle indication information of described time slot;

Time slot channel idle before described monitor from time slot initial time to Preset Time point, comprise: before from time slot initial time to Preset Time point, do not monitor website transmission data, or, do not monitor and be assigned the website that sends data in current time slots and send data and do not monitor the website that sends data in the last time slot in current time slots in current time slots and send data in current time slots.

In the possible execution mode of the first of the third aspect, do not allow the transmission data of crossing the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, the described competition phase is a period of time that website competition obtains channel;

In the possible execution mode of the second of the third aspect, transmission data allow to cross the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, or start to postpone from described time slot initial time the moment after duration and the duration of a competition phase of a sync period, described sync period is a period of time of website channel synchronization;

In conjunction with the possible execution mode of the second of the third aspect, in the third possible execution mode of the third aspect, described equipment also comprises:

Processing module, for in the time that the last time slot of current time slots finishes, if indication still has data to send in the Frame receiving, judge that current time slots has the data of crossing the border and sending, do not monitor the channel of current time slots, and at current time slots initial time to the website broadcast transmission indication information that crosses the border, described in the indication information that crosses the border be used to indicate described website and in current time slots, have the data of crossing the border and sending so that the website that current time slots is assigned does not send data in current time slots;

If the data of described monitoring modular specifically for not crossing the border and sending, start supervisory channel.

Fourth aspect, the embodiment of the present invention provides a kind of equipment, comprising:

Receiver module, for receiving the idle indication information of time slot that access point sends until data distribute after the Preset Time point of the each time slot after being assigned time slot;

Sending module, for according to the idle indication information of described time slot, sends data;

The idle indication information of described time slot is access point time slot channel idle before monitoring from time slot initial time to Preset Time point, judges the described time slot free time, the idle indication information of time slot sending to this equipment at described Preset Time point;

In the possible execution mode of the first of fourth aspect, do not allow the transmission data of crossing the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, the described competition phase is a period of time that website competition obtains channel.

In the possible execution mode of the second of fourth aspect, transmission data allow to cross the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, or start to postpone from described time slot initial time the moment after duration and the duration of a competition phase of a sync period, described sync period is a period of time of website channel synchronization.

In conjunction with the possible execution mode of the second of fourth aspect, at the third possible execution mode of fourth aspect, also comprise:

Know module, be assigned for being informed in the data that have the transmission of crossing the border on time slot;

Processing module, for not sending data described being assigned on time slot.

In conjunction with the third possible execution mode of fourth aspect, in the 4th kind of possible execution mode of fourth aspect, described in know that module is specifically for before finishing in channel synchronization, monitoring is assigned described in being informed in the data of crossing the border and sending on time slot.

In conjunction with the 4th kind of possible execution mode of fourth aspect, in the 5th kind of possible execution mode of fourth aspect, described before channel synchronization finishes, described in monitoring is informed in, be assigned on time slot and have the data that send of crossing the border to comprise:

In channel synchronization process, be informed in and be assigned the data that have the transmission of crossing the border on time slot according to the Frame of hearing.

In conjunction with the third possible execution mode of fourth aspect, in the 6th kind of possible execution mode of fourth aspect, describedly know that module, also specifically for receiving at the described time slot initial time that is assigned the indication information that crosses the border that access point sends, is assigned described in being informed on time slot, has the data of crossing the border and sending according to the described indication information that crosses the border.

The 5th aspect, the embodiment of the present invention provides a kind of equipment, comprising:

Monitor, for starting supervisory channel from time slot initial time;

Transmitter, if for time slot channel idle before monitoring from time slot initial time to Preset Time point, judge the described time slot free time, at described Preset Time point to the idle indication information of at least one website sending time slots, so that there is the website that data will send to use channel in the remaining time of described time slot according to the idle indication information of described time slot;

In the possible execution mode of the first aspect the 5th, do not allow the transmission data of crossing the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, the described competition phase is a period of time that website competition obtains channel;

In the possible execution mode of the second aspect the 5th, transmission data allow to cross the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, or start to postpone from described time slot initial time the moment after duration and the duration of a competition phase of a sync period, described sync period is a period of time of website channel synchronization;

In conjunction with the possible execution mode of the second of the 5th aspect, in the third the possible execution mode aspect the 5th, described equipment also comprises:

Processor, for in the time that the last time slot of current time slots finishes, if indication still has data to send in the Frame receiving, judge that current time slots has the data of crossing the border and sending, do not monitor the channel of current time slots, and indicate described transmitter at current time slots initial time to the website broadcast transmission indication information that crosses the border, described in the indication information that crosses the border be used to indicate and in current time slots, have the data of crossing the border and sending so that the website that current time slots is assigned does not send data in current time slots;

If the data of described monitor specifically for not crossing the border and sending, start supervisory channel.

The 6th aspect, the embodiment of the present invention provides a kind of equipment, comprising:

Receiver, for receiving the idle indication information of time slot that access point sends until data distribute after the Preset Time point of the each time slot after being assigned time slot;

Transmitter, for according to the idle indication information of described time slot, sends data;

In the possible execution mode of the first aspect the 6th, do not allow the transmission data of crossing the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, the described competition phase is a period of time that website competition obtains channel.

In the possible execution mode of the second aspect the 6th, transmission data allow to cross the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, or start to postpone from described time slot initial time the moment after duration and the duration of a competition phase of a sync period, described sync period is a period of time of website channel synchronization.

In conjunction with the possible execution mode of the second of the 6th aspect, the third the possible execution mode aspect the 6th, also comprises:

Processor, has the data of crossing the border and sending for being informed in to be assigned on time slot, for not sending data on time slot described being assigned.

In conjunction with the third possible execution mode of the 6th aspect, in the 4th kind of possible execution mode aspect the 6th, described processor is specifically for before finishing in channel synchronization, monitoring is assigned described in being informed in the data of crossing the border and sending on time slot, on time slot, do not send data described being assigned.

In conjunction with the 4th kind of possible execution mode of the 6th aspect, in the 5th kind of possible execution mode aspect the 6th, described processor is specifically in channel synchronization process, being informed in to be assigned according to the Frame of hearing has the data of crossing the border and sending on time slot, on time slot, do not send data described being assigned.

In conjunction with the 5th kind of possible execution mode of the 6th aspect, in the 6th kind of possible execution mode aspect the 6th, described processor specifically for, receive at the described time slot initial time that is assigned the indication information that crosses the border that access point sends, described in being informed according to the described indication information that crosses the border, be assigned and on time slot, have the data of crossing the border and sending, on time slot, do not send data described being assigned.

Indication information sending method, data transmission method for uplink and equipment that the embodiment of the present invention provides, by starting supervisory channel from time slot initial time, if time slot channel idle, to the idle indication information of website sending time slots, so that there is the website that data will send to use channel in the remaining time of time slot according to the idle indication information of time slot.Thereby improve the real-time of channel utilization and website reported data, avoided the problem of hiding website.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the flow chart of indication information sending method embodiment mono-of the present invention;

Fig. 2 is the flow chart of data transmission method for uplink embodiment mono-of the present invention;

Fig. 3 is the flow chart of data transmission method for uplink embodiment bis-of the present invention;

Fig. 4 is the schematic diagram of indication information sending method of the present invention, data transmission method for uplink embodiment mono-;

Fig. 5 is the schematic diagram of indication information sending method of the present invention, data transmission method for uplink embodiment bis-;

Fig. 6 is the schematic diagram of indication information sending method of the present invention, data transmission method for uplink embodiment tri-;

Fig. 7 is the structural representation of present device embodiment mono-;

Fig. 8 is the structural representation of present device embodiment bis-;

Fig. 9 is the structural representation of present device embodiment tri-;

Figure 10 is the structural representation of present device embodiment tetra-;

Figure 11 is the structural representation of present device embodiment five;

Figure 12 is the structural representation of present device embodiment six;

Figure 13 is the structural representation of present device embodiment seven;

Figure 14 is the structural representation of present device embodiment eight.

Embodiment

For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

Fig. 1 is the flow chart of indication information sending method embodiment mono-of the present invention, and as shown in Figure 1, the method for the present embodiment can comprise:

Step 101, start supervisory channel from time slot initial time.

Time slot channel idle before if step 102 monitors from time slot initial time to Preset Time point, judge the time slot free time, at Preset Time point to the idle indication information of at least one website sending time slots, so that there is the website that data will send to use channel in the remaining time of this time slot according to the idle indication information of time slot.Time slot channel idle before monitoring from time slot initial time to Preset Time point, can comprise: before from time slot initial time to Preset Time point, do not monitor any website transmission data, or, do not monitor and be assigned the website that sends data in current time slots and send data and do not monitor the website that sends data in the last time slot in current time slots in current time slots and send data in current time slots, be assigned the website that sends data in current time slots in the time that current time slots sends data and do not monitor the website that sends data in the last time slot in current time slots in current time slots transmission data not monitoring, if there is illegal website, as the website that is not assigned time slot sends data at time slot initial time between Preset Time point, now still can think current time slots channel idle, and the idle indication information of sending time slots, so that the legal website that data will send that has uses channel in the remaining time of this time slot, this situation can avoid illegal website illegally to send data, improve the fail safe of network.

Specifically, do not allow website to cross the border while transmission, in RAW, the send opportunity of website can not be crossed the border of time slot, i.e. arbitrary time slot in RAW only has at most the website can reported data, therefore, does not have the problem of hiding website.Do not allow website to cross the border in situation about sending, Preset Time point can be time slot initial time, or start to postpone from time slot initial time the moment after the duration of a competition phase, the competition phase is a period of time that website competition obtains channel, access point does not monitor any website before from time slot initial time to Preset Time point and sends data in RAW, or do not monitor be assigned in current time slots, send the website of data and do not monitor in the last time slot of current time slots, send data website send data, can judge the time slot free time, and give at the idle indication information of Preset Time point sending time slots the website that has data to send, the website that does not complete data transmission until all sends after remaining data, access point can stop regular supervisory channel.

Allow to cross the border while sending data, alternatively, Preset Time point can be time slot initial time, or start to postpone from time slot initial time the moment after the duration of a competition phase, or start to postpone from time slot initial time the moment after duration and the duration of a competition phase of a sync period, sync period is a period of time of website channel synchronization.

Alternatively, before access point starts supervisory channel from time slot initial time, in the time that the last time slot of current time slots finishes, if indication still has data to send in the Frame receiving, judge that current time slots has the data of crossing the border and sending, do not monitor the channel of current time slots, and at current time slots initial time to the website broadcast transmission indication information that crosses the border, the indication information that crosses the border is used to indicate website the data of crossing the border and sending in current time slots, so that the website that current time slots is assigned does not send data in current time slots, start supervisory channel from time slot initial time, be specifically as follows: if do not cross the border the data that send, start supervisory channel.If website receives the indication information that crosses the border that access point sends, website need not carry out channel synchronization, further power saving.

In step 102, do not allow website to cross the border while transmission, have website that data will send to be included in to be assigned in time slot, not send the website of data and/or do not assign time slot but the website that has data to send.Allow website to cross the border while transmission, have website that data will send to be included in to be assigned in time slot, not send the website of data and/or do not assign time slot but the website that has data to send.

Access point starts supervisory channel from time slot initial time, if monitor time slot channel idle, access point is judged this time slot free time, then at Preset Time point to the idle indication information of at least one website sending time slots, so that there is the website that data will send to use channel in the remaining time of this time slot according to the idle indication information of time slot, access point periodic monitoring channel, monitoring the idle indication information of sending time slots after time slot channel idle, until till not completing the website of data transmission.In the present embodiment, the idle indication information of time slot can use the form that has the non-competing polling message QoS CF-Poll of quality of service guarantee in existing standard, if have be assigned in time slot, do not send data website exist or have be assigned in time slot, do not send data website exist, can at the receiver address of the Frame of QoS CF-Poll, (ReceiveAddress, hereinafter to be referred as address that receiving station is set in territory RA); If not be assigned in time slot, do not send data or be assigned the website that does not send data in time slot, the RA territory of Frame that can QoSCF-Poll is set to a broadcast address; The idle indication information of time slot can also use in existing standard without data division message (Null Data Packet, hereinafter to be referred as: the NDP) form of CTS message, if have be assigned in time slot, do not send data or be assigned the website that does not send data in time slot and exist, the address of receiving station can be set in the CTS ID territory of NDP CTS frame; If not be assigned in time slot, do not send data or be assigned the website that does not send data in time slot, CTS ID territory that can NDP CTS frame is set to a broadcast address.

Access point is to the idle indication information of website sending time slots, so that there is the website that data will send to use channel in the remaining time of this time slot according to the idle indication information of time slot, can there be two kinds of enforceable modes: as the enforceable mode of the first, access point is to the idle indication information of a website sending time slots that has data to send, so that this website uses channel according to the idle indication information of time slot in the remaining time of this time slot.

As the enforceable mode of the second, access point is to the idle indication information of nonspecific website sending time slots, compete busy channel and use channel in the remaining time of time slot according to the idle indication information of time slot so that there are one or more websites that data will send, access point is during to the idle indication information of nonspecific website sending time slots, can send at random, also can according to priority send, the embodiment of the present invention does not limit this.

The indication information sending method that the present embodiment provides, start supervisory channel by access point from time slot initial time, if time slot channel idle, access point is to the idle indication information of website sending time slots, so that there is the website that data will send to use channel in the remaining time of time slot according to the idle indication information of time slot, do not allow to cross the border while sending data, can allow be assigned in time slot, not send the website of data and/or do not assign time slot but have in website that data will the send free timeslot in RAW and complete transmission, allow to cross the border while sending data, can allow be assigned in time slot, not send the website of data and/or do not assign time slot but have in website that data will the send free timeslot in RAW and complete transmission, thereby improve the real-time of channel utilization and website reported data.

Fig. 2 is the flow chart of data transmission method for uplink embodiment mono-of the present invention, and as shown in Figure 2, the method for the present embodiment can comprise:

The Preset Time point of step 201, the website each time slot after being assigned time slot receives the idle indication information of time slot that access point sends until data distribute.

Particularly, in the situation that not allowing to cross the border transmission data, Preset Time point can be the moment after time slot initial time or the duration that starts to postpone a competition phase from time slot initial time, and the competition phase is a period of time that website competition obtains channel.

In the situation that allowing to cross the border transmission data, Preset Time point can be the moment after time slot initial time or the duration that starts to postpone a competition phase from time slot initial time, or start to postpone from time slot initial time the moment after duration and the duration of a competition phase of a sync period, sync period is a period of time of website channel synchronization.

Step 202, according to the idle indication information of time slot, send data.The idle indication information of time slot is access point time slot channel idle before monitoring from time slot initial time to Preset Time point, judges the time slot free time, the idle indication information of time slot sending to this website at Preset Time point.Time slot channel idle before monitoring from time slot initial time to Preset Time point, comprise: before from time slot initial time to Preset Time point, do not monitor website transmission data, or, do not monitor and be assigned the website that sends data in current time slots and send data and do not monitor the website that sends data in the last time slot in current time slots in current time slots and send data in current time slots.

Particularly, send data according to the idle indication information of time slot, comprising: according to the idle indication information of time slot, and confirm while self being the object website of the idle indication information of time slot, to send data in the remaining time of current time slots.

The data transmission method for uplink that the present embodiment provides, the Preset Time point of the each time slot by website after being assigned time slot receives the idle indication information of time slot that access point sends until data distribute, and send data according to the idle indication information of time slot, thereby avoid the problem of hiding website, improved the real-time of channel utilization and website reported data.

In the situation that allowing to cross the border transmission data, Fig. 3 is the flow chart of data transmission method for uplink embodiment bis-of the present invention, and as shown in Figure 3, the method for the present embodiment can also comprise:

Step 301, be informed in to be assigned and on time slot, have the data of crossing the border and sending.

Step 302, on time slot, do not send data described being assigned.

Particularly, whether stations aware has the data that send of crossing the border can have two kinds of enforceable modes being assigned on time slot.As the enforceable mode of one, website is before channel synchronization finishes, and monitoring is informed in to be assigned on time slot whether have the data of crossing the border and sending, and specifically comprises:

One, in synchronizing process, website is not heard any message, is informed in and is assigned the data of not crossing the border on time slot and to send, and website is brought into use and is assigned time slot and sends data after same EOS.

Two, in synchronizing process, website is informed in to be assigned according to the Frame heard or acknowledge message the data of crossing the border and sending on time slot, and website does not send data being assigned on time slot.Particularly, website also can be used to indicate whether the Frame of hearing is last frame or the information of confirming the acknowledge message of last frame according to what carry in the Frame of hearing, determines whether to continue to use to be assigned time slot.Be specially:

Website hear finish after a up Frame synchronous, hear other website send to finish after the message of access point synchronous.Whether website can hold over channel according to the indicating bit judgement that indicates whether to have next Frame in the Frame website that crosses the border, and the website that crosses the border refers to and in time slot, do not send data or do not send data and send the website of data at the next time slot that is assigned time slot being assigned.If this Frame is last frame, website, after this Frame finishes, is waited for the acknowledge message ACK message of an access point, then accesses channel and use to be assigned time slot transmission data, owing to hiding the problem of website, website differs and hears surely up Frame herein.Or,

Website is heard the descending ACK message that an access point sends to the website that crosses the border, whether what confirm according to this ACK message of the indication of carrying in ACK message is whether the information judgement of last Frame website that crosses the border can hold over channel, if this ACK message authentication is last Frame, website accesses channel and uses and is assigned time slot transmission data after this ACK end of message.

Stations aware is crossed the border after the data that send being assigned to have on time slot, does not send data being assigned on time slot, and now website can carry out dormancy processing, does not access channel, also can collect data etc.Website starts to postpone at next time slot to wake up and attempt receiving the idle indication information of time slot that access point sends after the moment after the duration of a competition phase afterwards, if receive the idle indication information of time slot, send data in the remaining time of this time slot, if do not receive the idle indication information of time slot, continue dormancy.

As the enforceable mode of another kind, website is being assigned the indication information that crosses the border of time slot initial time trial reception access point transmission, if receive the indication information that crosses the border, being informed in to be assigned on time slot according to the indication information that crosses the border has the data of crossing the border and sending, and now can not carry out channel synchronization.Website is after receiving the indication information that crosses the border, start to postpone dormancy before the moment after the duration of a competition phase at next time slot, and start to postpone at next time slot to wake up and attempt receiving the idle indication information of time slot that access point sends after the moment after the duration of a competition phase, if receive the idle indication information of time slot, send data in the remaining time of this time slot, if do not receive the idle indication information of time slot, continue dormancy.Now website is without carrying out channel synchronization and keep out of the way (Backoff), thereby power saving more, also avoided the problem of hiding website simultaneously, improved the real-time of channel utilization and website reported data.

The data transmission method for uplink that the present embodiment provides, has the data of crossing the border and sending by stations aware being assigned on time slot, on time slot, do not send data being assigned.Thereby avoid the problem of hiding website, made more power saving of website, improved the real-time of channel utilization and website reported data.

Adopt several specific embodiments below, the technical scheme of said method embodiment is elaborated.

Fig. 4 is the schematic diagram of indication information sending method of the present invention, data transmission method for uplink embodiment mono-.In figure, be assumed to be each website and assign (distributing) time slot, as be that the first website is assigned the first time slot.As shown in Figure 4, restriction window turn-on time RAW in the beacon period is divided into multiple time slots, each time slot allocation corresponding website on this time slot, send data, while not allowing website to cross the border, arbitrary time slot in RAW, only have at most the website can reported data, access point starts supervisory channel from time slot initial time, access point does not only monitor any website transmission data before from time slot initial time to Preset Time point in RAW, or do not monitor and be assigned the website that sends the website of data and send data in current time slots in the last time slot of current time slots and send data, just can start regular supervisory channel at this time slot initial time that is assigned time slot website.Once the website that does not complete data transmission all sends after remaining data, and access point stops supervisory channel.If monitor time slot channel idle, access point is thought this time slot free time, then access point is to the idle indication information of website sending time slots, there is the website that data will send to send data in the remaining time of this time slot according to the idle indication information of this time slot so that one or more, until not complete the website that data send.Access point is to the idle indication information of website sending time slots, can there be two kinds of enforceable modes so that there is website that data will send to send data according to the idle indication information of time slot in the remaining time of time slot: the one, access point can be to the idle indication information of a website sending time slots that has data to send, so that this website uses channel according to the idle indication information of time slot in the remaining time of time slot.Further, if this website sends data within the remaining time of current time slots, can no longer wake up, if do not send, can continue the idle indication information of receiving slot.In such cases, the website that is assigned time slot if having exists remaining data to need to send, and access point can record the address of this website, and to the idle indication information of its sending time slots.

The 2nd, access point can be to the idle indication information of nonspecific website sending time slots, so that there are one or more websites that data will send compete busy channel and use channel in the remaining time of time slot according to the idle indication information of time slot.Further, if there is the website that data will send to send data within the remaining time of current time slots, can no longer wake up, if do not send, can continue the idle indication information of receiving slot.Access point during to the idle indication information of nonspecific website sending time slots, can send at random, also can according to priority send, and also can send by website order, and the embodiment of the present invention does not limit this.

Fig. 5 is the schematic diagram of indication information sending method of the present invention, data transmission method for uplink embodiment bis-.In figure, be assumed to be each website and assign a time slot, as be that the first website is assigned the first time slot.As shown in Figure 5, restriction window turn-on time in the beacon period is divided into multiple time slots, each time slot allocation corresponding website on this time slot, send data, while allowing website to cross the border, website is waken up at the boundary of time slot of distributing to oneself, first carries out channel synchronization, and website is in channel synchronization process, if hear a complete frame, website finishes synchronizing process.If website is not heard the frame that any one is complete in channel synchronization process, the time that website need to be monitored, for surveying time delay ProbeDelay, could finish channel synchronization process.The length of ProbeDelay is at least greatest physical layer data unit (PLCP protocol Data Unit, hereinafter to be referred as: transmitting time PPDU) adds two short frame periods (Short Inter Frame Space, hereinafter to be referred as: long transmitting time of adding an acknowledge message ACK of time SIFS), do like this, the website sending even if cross the border, for hiding website, just also can guarantee at the website of synchronizing channel the ACK message of receiving that an access point sends.

After channel synchronization finishes, if website is not heard the frame that any one is complete in synchronizing process, representing to be assigned does not have other websites transmission data of crossing the border in time slot.Website uses and is assigned the remaining time transmission data of time slot.Website adopts enhanced distributed channel access, and (Enhanced DistributedChannel Access is called for short: mode EDCA) accesses channel.

After channel synchronization finishes, if website has been heard a complete frame in synchronizing process, represent to have in this time slot (now for being assigned time slot) other websites transmission data of crossing the border.This website is not assigned time slot transmission data at this.Optionally, this website can be in dormancy during this period of time.This website can start in the access point monitors channel moment from back to back next time slot, the idle indication information of the receiving slot of waking up in cycle, this moment is to add that the synchronous duration ProbeDelay of maximum channel adds maximum back off time window (Max Backoff Window the border moment, be called for short, MBW) time.

Optionally, in order further to improve channel utilization, after channel synchronization finishes, if website has been heard a complete frame in synchronizing process, and in the frame of receiving, have indicating bit to point out that this frame is last frame or responds last frame, website still can continue to use this to be assigned time slot according to indicating bit information.

In synchronizing process, website may be heard the Frame that the website that crosses the border sends to access point, is last Frame if this frame is indicated in the MoreData unit of Frame, and website after this Frame finishes, then is waited for after an acknowledge message, brought into use channel.If it is not last Frame that this frame is indicated in the MoreData unit of Frame, this website does not send data at this time slot (now for being assigned time slot).

In synchronizing process, website may be heard the acknowledge message that access point sends to the website that crosses the border, and is the information of last Frame if carried what indicate that this acknowledge message confirms in acknowledge message, and website, after this acknowledge message finishes, is brought into use channel.If the website 3 in Fig. 5 can be in this case with sending data the remaining time of the 3rd time slot.If what do not carry in acknowledge message that this acknowledge message of indication confirms is that what to carry in the information of last Frame or acknowledge message that this acknowledge message of indication confirms is not the information of last Frame, this website is not assigned time slot and sends data at this.

As shown in Figure 5, website 1 has taken whole the second time slots and part the 3rd time slot, website 1 does not send data on the first time slot, website 2 is waken up and is carried out channel synchronization in the second time slot, monitored message transmits on channel, and follow-up transfer of data in addition, so access point monitors channel moment of website 2 dormancy to the three time slots, access point starts supervisory channel from time slot initial time, when judging the idle indication information of sending time slots after the time slot free time, after sync period and competition phase, website 2 starts the idle indication information of receiving slot.Because access point can not determine whether website 2 has data upload, access point is since the 3rd time slot supervisory channel, and at least sends an idle Indication message of time slot to website 2, if website 2 does not still have data to send, could determine that website 2 does not have data transmission.Website 3 is waken up and is carried out channel synchronization in the 3rd time slot, has monitored message and has transmitted on channel, but follow-uply there is no a transfer of data.After EOS, start the mode of EDCA and access channel, send data with the 3rd time slot.Because data are many, therefore website 3 crosses the border and has taken the time of part the 4th time slot.Access point starts supervisory channel from time slot initial time, website 3 sends data at the 3rd time slot and the 4th time slot, so access point is at the 3rd time slot and the not idle indication information of sending time slots of the 4th time slot, but at the idle indication information of the 5th time slot sending time slots, indication website 2 sends data in the remaining time of this time slot, if website 2 has data to send, website 2 utilizes this time slot to send remaining time; If website 2 does not have data to send, after this time slot, access point thinks that website 2 does not have data to need to send, and no longer the idle indication information of sending time slots is to website 2.

After access point determines that website has sent data or do not had data to send, access point can stop supervisory channel.

Fig. 6 is the schematic diagram of indication information sending method of the present invention, data transmission method for uplink embodiment tri-.In figure, be assumed to be each website and assign a time slot, as be that the first website is assigned the first time slot.As shown in Figure 6, website 1 does not send data on the first time slot, and website 1 crosses the border and taken whole the second time slots and part the 3rd time slot, and access point must be determined with the situation generation sending without crossing the border by each boundary of time slot in RAW.Access point can indicate whether to have data to send according to last Frame of receiving before the previous time slot of current time slots finishes, and transmission has judged whether to cross the border.If also have data to send, be determined with the transmission of crossing the border, if do not had, judge without crossing the border transmission.If there is the situation of crossing the border and sending, access point sends the indication information that crosses the border immediately, and indication is unavailable by this time slot starting.Just, after the website that is assigned to this time slot is waken up, receive the indication information that crosses the border.Can send at boundary of time slot place the indication information that crosses the border in order to ensure access point, cross the border website in the time closing on boundary of time slot transmission PPDU, can suitably adjust the transmitting time of PPDU.As website 1 last PPDU in the first time slot that crosses the border can also have short frame period SIFS to add that ACK is sent completely before adding time of SIFS apart from boundary of time slot, and first PPDU in the second time slot can at least cross the border after Indication message and SIFS and sending.As shown in Figure 6, access point monitors has the data of crossing the border and sending to the second time slot and the 3rd boundary of time slot place, and access point sends to website 2 and website 3 indication information that crosses the border, and website 2 and website 3 are waken up and received the indication information that crosses the border, so do not carry out channel synchronization, continue dormancy.Access point follow-up do not exist cross the border send the 4th time slot, the 5th time slot of data, the initial time of the 6th time slot starts supervisory channel until the time of Lag synchronization phase and competition phase, if time slot channel idle during this period of time, think the time slot free time, to the idle indication information of website 2 and website 3 sending time slots, website 2 and website 3 are waken up after the idle indication information of receiving slot and are sent data in the remaining time of this time slot according to the idle indication information of time slot.Due to the 5th time slot do not cross the border data send occur, access point does not send at the initial time of the 5th time slot the indication information that crosses the border, and the 5th time slot is assigned to website 5, and website 5 is waken up and do not received the indication information that crosses the border, start channel synchronization and competition, then access channel and send data.

One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each embodiment of the method can complete by the relevant hardware of program command.Aforesaid program can be stored in a computer read/write memory medium.This program, in the time carrying out, is carried out the step that comprises above-mentioned each embodiment of the method; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.

Fig. 7 is the structural representation of present device embodiment mono-, and particularly, this equipment can be access point apparatus, and as shown in Figure 7, the equipment of the present embodiment can comprise: monitoring modular 11 and sending module 12, wherein,

Monitoring modular 11 is for starting supervisory channel from time slot initial time.

If sending module 12 is for time slot channel idle before monitoring from time slot initial time to Preset Time point, judge the time slot free time, at Preset Time point to the idle indication information of at least one website sending time slots, so that there is the website that data will send to use channel in the remaining time of time slot according to the idle indication information of time slot, if time slot channel idle before monitoring from time slot initial time to Preset Time point, comprise: not monitoring any website before from time slot initial time to Preset Time point sends data in current time slots, or do not monitor and be assigned the website that sends the website of data and send data in current time slots in the last time slot of current time slots and send data.

Wherein, do not allow the transmission data of crossing the border, Preset Time point is time slot initial time, or starts to postpone from time slot initial time the moment after the duration of a competition phase, and the competition phase is a period of time that website competition obtains channel.The website that has data to send is included in to be assigned and in time slot, does not send the website of data and/or do not assign time slot but the website that has data to send.

Transmission data allow to cross the border, Preset Time point is time slot initial time, or start to postpone from time slot initial time the moment after the duration of a competition phase, or start to postpone from time slot initial time the moment after duration and the duration of a competition phase of a sync period, sync period is a period of time of website channel synchronization, and the website that has data to send is included in to be assigned and in time slot, does not send the website of data and/or do not assign time slot but the website that has data to send.

The equipment of the present embodiment, can be for the technical scheme of embodiment of the method shown in execution graph 1, and it realizes principle and technique effect is similar, repeats no more herein.

Fig. 8 is the structural representation of present device embodiment bis-, as shown in Figure 8, the equipment of the present embodiment is on the basis of device structure shown in Fig. 7, further, also comprise: processing module 13, processing module 13 is in the time that the last time slot of current time slots finishes, if indication still has data to send in the Frame receiving, judge that current time slots has the data of crossing the border and sending, do not monitor the channel of current time slots, and at current time slots initial time to the website broadcast transmission indication information that crosses the border, the indication information that crosses the border is used to indicate the data of crossing the border and sending in current time slots, so that the website that current time slots is assigned does not send data in current time slots.If the data of monitoring modular 11 specifically for not crossing the border and sending, start supervisory channel.

Fig. 9 is the structural representation of present device embodiment tri-, and particularly, this equipment can be site apparatus, and as shown in Figure 9, the equipment of the present embodiment can comprise: receiver module 15 and sending module 16, wherein,

Receiver module 15 receives the idle indication information of time slot that access point sends until data distribute for the Preset Time point of the each time slot after being assigned time slot.

Sending module 16, for according to the idle indication information of time slot, sends data.

Wherein, do not allow the transmission data of crossing the border, Preset Time point is time slot initial time, or starts to postpone from time slot initial time the moment after the duration of a competition phase, and the competition phase is a period of time that website competition obtains channel.

Transmission data allow to cross the border, Preset Time point is time slot initial time, or start to postpone from time slot initial time the moment after the duration of a competition phase, or start to postpone from time slot initial time the moment after duration and the duration of a competition phase of a sync period, sync period is a period of time of website channel synchronization.

The equipment of the present embodiment, can be for the technical scheme of embodiment of the method shown in execution graph 2, and it realizes principle and technique effect is similar, repeats no more herein.

Figure 10 is the structural representation of present device embodiment tetra-, and as shown in figure 10, the equipment of the present embodiment, on the basis of equipment shown in Fig. 9, can also comprise: know module 17 and processing module 18, wherein,

Know that module 17 has the data of crossing the border and sending for being informed in to be assigned on time slot, processing module 18 is not for sending data being assigned on time slot.

Know that module 17 is specifically for before finishing in channel synchronization, monitoring is informed in and is assigned the data that have the transmission of crossing the border on time slot.Before channel synchronization finishes, monitoring is informed in to be assigned on time slot has the data that send of crossing the border to be specially: in channel synchronization process, be informed in and be assigned the data that have the transmission of crossing the border on time slot according to the Frame of hearing.

Know that module 17, also specifically for the indication information that crosses the border being assigned the transmission of time slot initial time reception access point, is informed in and is assigned the data that have the transmission of crossing the border on time slot according to the indication information that crosses the border.

The equipment of the present embodiment, can be for the technical scheme of embodiment of the method shown in execution graph 3, and it realizes principle and technique effect is similar, repeats no more herein.

Figure 11 is the structural representation of present device embodiment five, and particularly, this equipment can be access point apparatus, and as shown in figure 11, the equipment of the present embodiment can comprise: monitor 21 and transmitter 22, wherein,

Monitor 21 is for starting supervisory channel from time slot initial time.

If transmitter 22 is for time slot channel idle before monitoring from time slot initial time to Preset Time point, judge the time slot free time, at Preset Time point to the idle indication information of at least one website sending time slots, so that there is the website that data will send to use channel in the remaining time of time slot according to the idle indication information of time slot, time slot channel idle before monitoring from time slot initial time to Preset Time point, comprise: before from time slot initial time to Preset Time point, do not monitor website transmission data, or, do not monitor and be assigned the website that sends data in current time slots and send data and do not monitor the website that sends data in the last time slot in current time slots in current time slots and send data in current time slots.

Figure 12 is the structural representation of present device embodiment six, as shown in figure 12, the equipment of the present embodiment is on the basis of device structure shown in Figure 11, further, also comprise: processor 23, processor 23 is in the time that the last time slot of current time slots finishes, if indication still has data to send in the Frame receiving, judge that current time slots has the data of crossing the border and sending, do not monitor the channel of current time slots, and indicate described transmitter 22 at current time slots initial time to the website broadcast transmission indication information that crosses the border, the indication information that crosses the border is used to indicate the data of crossing the border and sending in current time slots, so that the website that current time slots is assigned does not send data in current time slots.If the data of monitor 21 specifically for not crossing the border and sending, start supervisory channel.

Figure 13 is the structural representation of present device embodiment seven, and particularly, this equipment can be site apparatus, and as shown in figure 13, the equipment of the present embodiment can comprise: receiver 25 and transmitter 26, wherein,

Receiver 25 receives the idle indication information of time slot that access point sends until data distribute for the Preset Time point of the each time slot after being assigned time slot.

Transmitter 26, for according to the idle indication information of time slot, sends data.The idle indication information of time slot is access point time slot channel idle before monitoring from time slot initial time to Preset Time point, judges the time slot free time, the idle indication information of time slot sending to this equipment at Preset Time point; Time slot channel idle before monitoring from time slot initial time to Preset Time point, comprise: before from time slot initial time to Preset Time point, do not monitor website transmission data, or, do not monitor and be assigned the website that sends data in current time slots and send data and do not monitor the website that sends data in the last time slot in current time slots in current time slots and send data in current time slots.

Figure 14 is the structural representation of present device embodiment eight, and as shown in figure 14, the equipment of the present embodiment, on the basis of equipment shown in Figure 13, can also comprise: processor 28, wherein,

Processor 28 has the data of crossing the border and sending for knowing to be assigned on time slot, on time slot, do not send data being assigned.

Before the channel synchronization that is specifically used in processor 28 finishes, monitoring is informed in and is assigned the data that have the transmission of crossing the border on time slot.

Processor 28 also can be specifically in channel synchronization process, and being informed in to be assigned according to the Frame of hearing has the data of crossing the border and sending on time slot, on time slot, does not send data being assigned.

Processor 28 also can be specifically for receiving the indication information that crosses the border that access point sends being assigned time slot initial time, and being informed in to be assigned according to the indication information that crosses the border has the data of crossing the border and sending on time slot, on time slot, do not send data being assigned.

It should be noted that, the structural representation of the equipment providing in various embodiments of the present invention, is only a kind of signal, and the mode that the annexation of concrete each module or parts is not limited to provide in figure can be with being as the criterion of reality, and the present invention is not construed as limiting this.

Finally it should be noted that: above each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to aforementioned each 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 some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims

1. an indication information sending method, is characterized in that, comprising:

Start supervisory channel from time slot initial time;

If time slot channel idle before monitoring from time slot initial time to Preset Time point, judge the described time slot free time, at described Preset Time point to the idle indication information of at least one website sending time slots, so that there is the website that data will send to use channel in the remaining time of described time slot according to the idle indication information of described time slot;

2. method according to claim 1, it is characterized in that, do not allow the transmission data of crossing the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, the described competition phase is a period of time that website competition obtains channel;

3. method according to claim 1, it is characterized in that, transmission data allow to cross the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, or start to postpone from described time slot initial time the moment after duration and the duration of a competition phase of a sync period, described sync period is a period of time of website channel synchronization;

4. method according to claim 3, is characterized in that, described start supervisory channel from time slot initial time before, described method also comprises:

The data that send if do not cross the border, start supervisory channel.

5. a data transmission method for uplink, is characterized in that, comprising:

The Preset Time point of the each time slot of website after being assigned time slot receives the idle indication information of time slot that access point sends until data distribute;

According to the idle indication information of described time slot, send data;

The idle indication information of described time slot is access point time slot channel idle before monitoring from time slot initial time to Preset Time point, judges the described time slot free time, the idle indication information of time slot sending to this website at described Preset Time point;

6. method according to claim 5, it is characterized in that, do not allow the transmission data of crossing the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, the described competition phase is a period of time that website competition obtains channel.

7. method according to claim 5, it is characterized in that, transmission data allow to cross the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, or start to postpone from described time slot initial time the moment after duration and the duration of a competition phase of a sync period, described sync period is a period of time of website channel synchronization.

8. method according to claim 7, is characterized in that, also comprises:

On time slot, do not send data described being assigned.

9. method according to claim 8, is characterized in that, described in be informed in to be assigned and on time slot, have the data of crossing the border and sending, comprising:

10. method according to claim 9, is characterized in that, described before channel synchronization finishes, and is assigned on time slot and has the data that send of crossing the border to comprise described in monitoring is informed in:

11. methods according to claim 8, is characterized in that, described in be informed in to be assigned and on time slot, have the data of crossing the border and sending, comprising:

12. 1 kinds of equipment, is characterized in that, comprising:

13. equipment according to claim 12, it is characterized in that, do not allow the transmission data of crossing the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, the described competition phase is a period of time that website competition obtains channel;

14. equipment according to claim 12, it is characterized in that, transmission data allow to cross the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, or start to postpone from described time slot initial time the moment after duration and the duration of a competition phase of a sync period, described sync period is a period of time of website channel synchronization;

15. equipment according to claim 14, is characterized in that, described equipment also comprises:

Processing module, for in the time that the last time slot of current time slots finishes, if indication still has data to send in the Frame receiving, judge that current time slots has the data of crossing the border and sending, do not monitor the channel of current time slots, and at current time slots initial time to the website broadcast transmission indication information that crosses the border, described in the indication information that crosses the border be used to indicate and in current time slots, have the data of crossing the border and sending so that the website that current time slots is assigned does not send data in current time slots;

16. 1 kinds of equipment, is characterized in that, comprising:

Receiver module, receives the idle indication information of time slot that access point sends until data distribute for the Preset Time point of the each time slot after being assigned time slot;

17. equipment according to claim 16, it is characterized in that, do not allow the transmission data of crossing the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, the described competition phase is a period of time that website competition obtains channel.

18. equipment according to claim 16, it is characterized in that, transmission data allow to cross the border, described Preset Time point is described time slot initial time, or start to postpone from described time slot initial time the moment after the duration of a competition phase, or start to postpone from described time slot initial time the moment after duration and the duration of a competition phase of a sync period, described sync period is a period of time of website channel synchronization.

19. equipment according to claim 18, is characterized in that, also comprise:

Processing module, for not sending data described being assigned on time slot.

20. equipment according to claim 19, is characterized in that, described in know that module is specifically for before finishing in channel synchronization, monitoring is assigned described in being informed in the data of crossing the border and sending on time slot.

21. equipment according to claim 20, is characterized in that, described before channel synchronization finishes, and be assigned on time slot and have the data that send of crossing the border to comprise described in monitoring is informed in:

22. equipment according to claim 19, it is characterized in that, describedly know that module, also specifically for receiving at the described time slot initial time that is assigned the indication information that crosses the border that access point sends, is assigned described in being informed on time slot, has the data of crossing the border and sending according to the described indication information that crosses the border.