CN102907154A - Uplink access method, device and system - Google Patents
Uplink access method, device and system Download PDFInfo
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- CN102907154A CN102907154A CN2012800005733A CN201280000573A CN102907154A CN 102907154 A CN102907154 A CN 102907154A CN 2012800005733 A CN2012800005733 A CN 2012800005733A CN 201280000573 A CN201280000573 A CN 201280000573A CN 102907154 A CN102907154 A CN 102907154A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/26—Resource reservation
Abstract
Embodiments of the invention provide an uplink access method, device and system. The uplink access method comprises setting the reservation resources and sending the reservation resource notification information to at least one terminal; receiving the reservation signals transmitted by at least one terminal via the reservation resources; and sending the uplink access resource allocation message to the at least one terminal according to the reservation signals, so that the at least one terminal performs uplink access by means of the uplink access resources corresponding to the access resource allocation message. According to the uplink access method, device and system of the invention, a head-end device allocates the reservation resources at first and then allocates the uplink access resources to the terminal only after the reservation signals transmitted by the terminal is received, thereby preventing unnecessary resource waste which may be caused by the fact that many uplink access resources are always kept for uplink detection.
Description
Technical field
The embodiment of the invention relates to the communication technology, relates in particular to a kind of up-link access method, equipment and system.
Background technology
OFDM access (Orthogonal Frequency Division Multiple Access, abbreviation OFDMA) system is based on multiple access technology, transmission bandwidth is divided into a series of sub-carrier set of the non-overlapping copies of quadrature, different sub-carrier set is distributed to different users realize multiple access.Ofdm system is dynamically distributed to the user who needs to available bandwidth resources, is easy to realize the optimization utilization of system resource.Because different user takies the sub-carrier set of non-overlapping copies, under desirable synchronous situation, system is without disturbing between many families.
At present, the up access of OFDMA system mainly is to distribute a fixing time-frequency piece to use as up access, in order to guarantee that thereby different users uses identical orthogonal sequence to reduce the probability of conflict, the length of orthogonal sequence can not be too short, needs in this case this orthogonal sequence of more resource bearing.But in wired system, because the relativeness of terminal and headend is stable, keep more up access-in resource to be used for up access always, must cause the unnecessary wasting of resources.
Summary of the invention
The embodiment of the invention provides a kind of up-link access method, equipment and system, to avoid the waste of ascending resource.
The embodiment of the invention provides a kind of up-link access method, comprising:
Reserve resource is set, sends the reserve resource announcement information at least one terminal, wherein, described reserve resource announcement information is in order to indicate the time location of described reserve resource;
Receive the reservation signal that described at least one terminal sends by described reserve resource respectively;
Send up access-in resource assignment messages to described at least one terminal respectively according to described reservation signal, so that described at least one terminal is carried out up access by up access-in resource corresponding to described access-in resource assignment messages.
The embodiment of the invention provides a kind of up-link access method, comprising:
Know the time location of reserve resource according to the reserve resource announcement information that recognizes, send reservation signal by described reserve resource head-end equipment;
Receive the up access-in resource assignment messages that described headend sends, the up access-in resource corresponding by described access-in resource assignment messages carries out up access.
The embodiment of the invention provides a kind of headend, comprising:
The first allocation units are used for arranging reserve resource, send the reserve resource announcement information at least one terminal, and wherein, described reserve resource announcement information is in order to indicate the time location of described reserve resource;
The reservation unit is used for receiving the reservation signal that described at least one terminal sends by described reserve resource respectively;
The second allocation units are used for sending up access-in resource assignment messages to described at least one terminal respectively according to described reservation signal, so that described at least one terminal is carried out up access by up access-in resource corresponding to described access-in resource assignment messages.
The embodiment of the invention provides a kind of terminal, comprising:
The reservation signal transmitting element, the time location for know reserve resource according to the reserve resource announcement information that recognizes sends reservation signal by described reserve resource head-end equipment;
Up access unit is used for receiving the up access-in resource assignment messages that described headend sends, and the up access-in resource corresponding by described access-in resource assignment messages carries out up access.
The embodiment of the invention provides a kind of ascending access system, comprising:
The headend that the embodiment of the invention provides, and the terminal that provides of a plurality of embodiment of the invention.
As shown from the above technical solution, the invention provides up-link access method, equipment and system that embodiment provides, headend arranges reserve resource, send the reserve resource announcement information at least one terminal, receive the reservation signal that at least one terminal sends by reserve resource respectively, send upper reservation signal respectively at least one row access-in resource assignment messages according to terminal, so that at least one terminal is by up access-in resource access corresponding to access-in resource assignment messages.Headend at first distributes reserve resource, behind the reservation signal that receives the terminal transmission, just is the up access-in resource of terminal distribution, and the up access-in resource of having avoided always keeping more is used for the unnecessary wasting of resources that up detection causes.Especially in wired system, the relativeness of terminal and headend is more stable, uses the up-link access method that present embodiment provides, and can effectively save up access-in resource, thereby promotes the data throughout of whole system.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do one to the accompanying drawing of required use in embodiment or the description of the Prior Art and introduce simply, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
A kind of up-link access method flow chart that Fig. 1 provides for the embodiment of the invention;
The another kind of up-link access method flow chart that Fig. 2 provides for the embodiment of the invention;
Another up-link access method flow chart that Fig. 3 provides for the embodiment of the invention;
A kind of headend structural representation that Fig. 4 provides for the embodiment of the invention;
The another kind of headend structural representation that Fig. 5 provides for the embodiment of the invention;
The terminal structure schematic diagram that Fig. 6 provides for the embodiment of the invention;
The ascending access system structural representation that Fig. 7 provides for the embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
A kind of up-link access method flow chart that Fig. 1 provides for the embodiment of the invention.As shown in Figure 1, the up-link access method that present embodiment provides specifically can be applied to the OFDMA system to the testing process of up access user, this OFDMA system is specifically as follows point-to-multipoint system, namely comprises a headend and a plurality of terminal equipment in the system.The up-link access method that present embodiment provides can be carried out by headend.
The up-link access method that present embodiment provides specifically comprises:
Step S10, reserve resource is set, sends the reserve resource announcement information at least one terminal, wherein, described reserve resource announcement information is in order to indicate the time location of described reserve resource;
The reservation signal that step S20, described at least one terminal of reception send by described reserve resource respectively;
Step S30, send up access-in resource assignment messages to described at least one terminal respectively according to described reservation signal, so that described at least one terminal is carried out up access by up access-in resource corresponding to described access-in resource assignment messages.
Headend is specifically as follows local side apparatus, and headend at first arranges reserve resource, and this reserve resource can be a time-frequency piece, also can be a time slot.The reserve resource announcement information that headend will be used to indicate the time location of reserve resource again issues down, so that the terminal that need to reach the standard grade can recognize this reserve resource announcement information and know the time location of reserve resource.In actual application, which terminal headend does not also know to have to reach the standard grade, issuing in the process at the reserve resource announcement information then, headend can adopt the mode of broadcasting to issue this reserve resource announcement information, also can carry this reserve resource announcement information in downlink data, the terminal that need to reach the standard grade can recognize this reserve resource announcement information and get final product.The terminal that need to reach the standard grade is after recognizing this reserve resource, send reservation signal by this reserve resource, when existing a plurality of terminals to reach the standard grade, these a plurality of terminals all can utilize this reserve resource to send reservation signal, reservation signal specifically can comprise an orthogonal sequence, and the orthogonal sequence in the reservation signal that different terminals sends can be identical.Headend sends up access-in resource assignment messages to the terminal that sends this reservation signal, and terminal is again by up access-in resource access corresponding to this up access-in resource assignment messages.
The up-link access method that present embodiment provides, headend arranges reserve resource, send the reserve resource announcement information, receive the reservation signal that at least one terminal sends by reserve resource respectively, send up access-in resource assignment messages at least one terminal respectively according to reservation signal, so that at least one terminal is by up access-in resource access corresponding to access-in resource assignment messages.Headend at first distributes reserve resource, behind the reservation signal that receives the terminal transmission, just is the up access-in resource of terminal distribution, and the up access-in resource of having avoided always keeping more is used for the unnecessary wasting of resources that up detection causes.Especially in wired system, the relativeness of terminal and headend is more stable, uses the up-link access method that present embodiment provides, and can effectively save up access-in resource, thereby promotes the data throughout of whole system.
The another kind of up-link access method flow chart that Fig. 2 provides for the embodiment of the invention.As shown in Figure 2, further, in the present embodiment, the described reserve resource that arranges among the step S10 specifically can comprise the steps:
Described reserve resource periodically is set;
Correspondingly, step S20, at least one terminal of described reception is passed through respectively can also comprise the steps: after the reservation signal of described reserve resource transmission
Step S40, reduce according to the cycle that arranges of described reservation signal with described reserve resource.
Particularly, this reserve resource is periodically to arrange, and can further avoid the wasting of resources.When head end equipment receives this reservation signal, can know to exist the user to reach the standard grade, then the cycle that arranges of reserve resource can be reduced, to satisfy user's the demand of reaching the standard grade.
Can also be according to the statistical information of reaching the standard grade, the user who judges this time period situation of reaching the standard grade when dividing the reservation signal of transmission too intensive for receiving terminal, i.e. user's period of reaching the standard grade and relatively concentrating, can reduce cycle that arranges of reserve resource.Then in the present embodiment, step S40, describedly reduce according to the cycle that arranges of described reservation signal with described reserve resource, specifically can comprise the steps:
In the first Preset Time, if the quantity of the described reservation signal that receives surpasses predetermined threshold value, then the cycle that arranges with described reserve resource reduces.
In actual application, can also adjust the cycle that arranges of this reserve resource according to the number of users of having reached the standard grade.For example in wired system, because the quantity of terminal is more stable, when the terminal of having reached the standard grade reaches some, may need the terminal quantity of reaching the standard grade just few, then after the terminal quantity of having reached the standard grade surpasses certain value, even have the terminal of newly reaching the standard grade, also need not the cycle of setting is reduced; If the cycle that before will arrange diminishes, then at this moment can suitably the cycle that arranges be become large.Adjustment by to cycle that arranges of reserve resource can improve the adaptability of user's request.
Further, in the present embodiment, step S40 after the described cycle that arranges with described reserve resource reduces, can also comprise the steps:
Step S50, in the second Preset Time, if do not receive the reservation signal that other-end sends by described reserve resource, then the cycle that arranges with described reserve resource returns to initial value.
After the cycle that arranges with reserve resource reduces, if in the second Preset Time, do not receive the reservation signal that other-end sends, the cycle that arranges of reserve resource can be returned to initial value, to avoid the waste of reserve resource.
In the present embodiment, describedly send up access-in resource assignment messages to described at least one terminal respectively according to reservation signal, specifically can comprise the steps:
Carry out relevant treatment according to the first orthogonal sequence in the described reservation signal, if the first relevant peaks that generates surpasses the first preset value, then described up access-in resource assignment messages is broadcasted.
Particularly, different terminals is used for preengaging first orthogonal sequence of reaching the standard grade can be identical, so that headend knows that existing terminal to reach the standard grade gets final product.This first orthogonal sequence is specifically as follows the pseudo noise code (pseudo random noise is called for short PN) with orthogonality.Terminal is carried at this first orthogonal sequence in the reservation signal, sends to headend by reserve resource.Headend carries out the orthogonal sequence of this locality and this first orthogonal sequence relevant, if the first relevant peaks that generates surpasses the first preset value, then can determine to exist the terminal that need to reach the standard grade.Up access-in resource assignment messages is broadcasted all terminals.Terminal is known up access-in resource assignment messages according to this broadcasting, and the up access-in resource access corresponding according to up access-in resource assignment messages.The first orthogonal sequence is set to short sequence can realize the reservation of reaching the standard grade, saving resource.
Further, in the present embodiment, step S30, described according to reservation signal respectively after described at least one terminal sends up access-in resource assignment messages, can also comprise the steps:
Step S60, receive the second orthogonal sequence that described at least one terminal sends by up access-in resource corresponding to described up access-in resource assignment messages respectively, carry out relevant treatment according to each second orthogonal sequence, if the second relevant peaks that generates surpasses the second preset value, then determine the sign of described the second orthogonal sequence, described sign is carried at transmission in the access response.
Terminal can be selected second orthogonal sequence at random from the set of the second orthogonal sequence, this second orthogonal sequence has a sign, and this sign is used for this second orthogonal sequence of unique identification.Comprise a plurality of the second orthogonal sequences in the set of the second orthogonal sequence, have orthogonality between each second orthogonal sequence.The second orthogonal sequence that terminal will be selected sends to headend.Headend carries out relevant treatment according to the orthogonal sequence set of this locality to this second orthogonal sequence, local orthogonal sequence set comprises a plurality of orthogonal sequences, each orthogonal sequence that the orthogonal sequence of this locality is concentrated carries out relevant with this second orthogonal sequence, if the second relevant peaks of the relevant generation with this second orthogonal sequence of one of them orthogonal sequence surpasses the second preset value, then can detect a sequence, and according to the orthogonal sequence relevant with this second orthogonal sequence, determine the sign of this second orthogonal sequence, and this sign is carried in the access response sends to terminal.Particularly, headend can know which the terminal that sends this second orthogonal sequence is, only the access response need to be sent, during the sign of second orthogonal sequence that be designated own transmission of terminal recognition in the access response, can determine that this access response sends to oneself, then should access respond effective to this terminal.By the second orthogonal sequence terminal is distinguished, realized simple.
In actual applications, also there is another kind of up access way, headend can periodically distribute up access-in resource, the terminal that need to reach the standard grade is after the distribution of the up access-in resource that recognizes this head end, from the orthogonal sequence set, select an orthogonal sequence at random, this orthogonal sequence has sign, this orthogonal sequence is sent to headend, headend carries out relevant treatment to orthogonal sequence, when if the relevant peaks that generates surpasses preset value, the terminal that definite existence need to be reached the standard grade, then the cycle that arranges with up access-in resource shortens, thereby ensures more up access-in resource.Headend is determined the sign of orthogonal sequence, sign is carried in the access response send.Terminal recognition in the access response be designated the sign of the own orthogonal sequence that sends the time, can determine that this access response sends to oneself, then be somebody's turn to do access respond effective to this terminal.In said process, in the Preset Time after the cycle that arranges with up access-in resource shortens, other-end does not send orthogonal sequence, and then the cycle that arranges with up access-in resource returns to initial value, to reach the purpose of saving resource.
Another up-link access method flow chart that Fig. 3 provides for the embodiment of the invention.As shown in Figure 3, the up-link access method that present embodiment provides specifically can cooperate realization with the up-link access method that is applied to headend that any embodiment of the present invention provides, and this repeats no more its specific implementation process.The up-link access method that present embodiment provides can be carried out by terminal.
The up-link access method that present embodiment provides specifically comprises:
The reserve resource announcement information that step C10, basis recognize is known the time location of reserve resource, sends reservation signal by described reserve resource head-end equipment;
The up access-in resource assignment messages that step C20, the described headend of reception send, the up access-in resource corresponding by described access-in resource assignment messages carries out up access.
The up-link access method that present embodiment provides, terminal is known the time location of reserve resource according to the reserve resource announcement information that recognizes, send reservation signal by reserve resource head-end equipment, receive the up access-in resource assignment messages that headend sends, by up access-in resource access corresponding to access-in resource assignment messages.Headend at first distributes reserve resource, behind the reservation signal that receives the terminal transmission, just is the up access-in resource of terminal distribution, and the up access-in resource of having avoided always keeping more is used for the unnecessary wasting of resources that up detection causes.Especially in wired system, the relativeness of terminal and headend is more stable, uses the up-link access method that present embodiment provides, and can effectively save up access-in resource, thereby promotes the data throughout of whole system.
In the present embodiment, step C10, described by described reserve resource head-end equipment transmission reservation signal, specifically can comprise the steps:
Then the first orthogonal sequence is carried in the described reservation signal if recognize the reserve resource that periodically arranges, sends described reservation signal by described reserve resource to described headend;
Correspondingly, step C20, the up access-in resource assignment messages that the described headend of described reception sends, the up access-in resource corresponding by described access-in resource assignment messages carries out up access, specifically can comprise the steps:
Receive the broadcasting that carries described up access-in resource assignment messages that described headend sends, the up access-in resource corresponding by described access-in resource assignment messages carries out up access.
Headend realizes reaching the standard grade reservation by the first orthogonal sequence, and the first orthogonal sequence is set to short sequence can realize the reservation of reaching the standard grade, saving resource.
In the present embodiment, described among the step C20 carries out up access by up access-in resource corresponding to described access-in resource assignment messages, specifically can comprise the steps:
From the set of the second orthogonal sequence, select second orthogonal sequence, the up access-in resource corresponding by described access-in resource assignment messages sends described the second orthogonal sequence to described headend, and the access response that carries sign that receives described headend transmission, if the sign in the described access response is identical with the sign of the second orthogonal sequence that sends to described headend, then finish up access.
Headend is distinguished terminal by the second orthogonal sequence, to realize the up access to terminal, realizes simple.
A kind of headend structural representation that Fig. 4 provides for the embodiment of the invention.As shown in Figure 4, the headend 81 that present embodiment provides specifically can be realized each step of the up-link access method that is applied to headend 81 that any embodiment of the present invention provides, and this repeats no more.The headend 81 that present embodiment provides specifically comprises the first allocation units 11, reservation unit 12 and the second allocation units 13.The first allocation units 11 are used for arranging reserve resource, send the reserve resource announcement information at least one terminal, and wherein, described reserve resource announcement information is in order to indicate the time location of described reserve resource.Reservation unit 12 is used for receiving the reservation signal that described at least one terminal 82 sends by described reserve resource respectively.The second allocation units 13 are used for sending up access-in resource assignment messages to described at least one terminal 82 respectively according to described reservation signal, so that described at least one terminal 82 is carried out up access by up access-in resource corresponding to described access-in resource assignment messages.
The headend 81 that present embodiment provides, the first allocation units 11 arrange reserve resource, send the reserve resource announcement information, reservation unit 12 receives the reservation signal that at least one terminal 82 sends by reserve resource respectively, the second allocation units 13 send up access-in resource assignment messages at least one terminal 82 respectively according to reservation signal, so that at least one terminal 82 is by up access-in resource access corresponding to access-in resource assignment messages.Headend 81 at first distributes reserve resource, behind the reservation signal that receives terminal 82 transmissions, just is that terminal 82 is distributed up access-in resources, and the up access-in resource of having avoided always keeping more is used for the unnecessary wasting of resources that up detection causes.Especially in wired system, terminal 82 is more stable with the relativeness of headend 81, uses the up-link access method that present embodiment provides, and can effectively save up access-in resource, thereby promotes the data throughout of whole system.
The another kind of headend structural representation that Fig. 5 provides for the embodiment of the invention.As shown in Figure 5, in the present embodiment, described the first allocation units 11 also are used for periodically arranging described reserve resource.Correspondingly, described headend 81 can also comprise cycle adjusting unit 14 is set.Cycle adjusting unit 14 is set to be used for reducing according to the cycle that arranges of described reservation signal with described reserve resource.By the setting of cycle adjusting unit 14 is set, realize to improve the adaptability of user's request to the adjustment in the cycle that arranges of reserve resource.
In the present embodiment, the described cycle adjusting unit 14 that arranges also is used in the first Preset Time, if the quantity of the described reservation signal that receives surpasses predetermined threshold value, then the cycle that arranges with described reserve resource reduces.When dividing the reservation signal of transmission too intensive for receiving terminal, i.e. user's period of reaching the standard grade and relatively concentrating, can reduce cycle that arranges of reserve resource.
In the present embodiment, this headend 81 specifically can also comprise reset unit 15.Reset unit 15 is used in the second Preset Time, if do not receive the reservation signal that other-end 82 sends by described reserve resource, then the cycle that arranges with described reserve resource returns to initial value.After the cycle that arranges with reserve resource reduces, if in Preset Time, do not receive the reservation signal that other-end 82 sends, the cycle that arranges of reserve resource can be returned to initial value, to avoid the waste of reserve resource.
In the present embodiment, described reservation signal comprises the first orthogonal sequence.Correspondingly, described the second allocation units 13 also are used for carrying out relevant treatment according to the first orthogonal sequence of described reservation signal, if the first relevant peaks that generates surpasses the first preset value, then described up access-in resource assignment messages are broadcasted.The first orthogonal sequence is set to short sequence can realize the reservation of reaching the standard grade, saving resource.
In the present embodiment, this headend 81 can also comprise access detecting unit 16.Access detecting unit 16 is used for receiving the second orthogonal sequence that described at least one terminal 82 sends by up access-in resource corresponding to described up access-in resource assignment messages respectively, carry out relevant treatment according to each second orthogonal sequence, if the second relevant peaks that generates surpasses the second preset value, then determine the sign of described the second orthogonal sequence, described sign is carried at transmission in the access response.By the second orthogonal sequence terminal 82 is distinguished, realized simple.
The terminal structure schematic diagram that Fig. 6 provides for the embodiment of the invention.As shown in Figure 6, the terminal 82 that present embodiment provides specifically can realize each step of the up-link access method that is applied to terminal 82 that any embodiment of the present invention provides, and this repeats no more.The terminal 82 that present embodiment provides specifically comprises reservation signal transmitting element 21 and up access unit 22.Reservation signal transmitting element 21 is used for knowing according to the reserve resource announcement information that recognizes the time location of reserve resource, sends reservation signal by described reserve resource head-end equipment 81.Up access unit 22 is used for receiving the up access-in resource assignment messages that described headend 81 sends, and the up access-in resource corresponding by described access-in resource assignment messages carries out up access.
The terminal 82 that present embodiment provides, reservation signal transmitting element 21 is known the time location of reserve resource according to the reserve resource announcement information that recognizes, send reservation signal by described reserve resource head-end equipment 81, up access unit 22 receives the up access-in resource assignment messages that headend 81 sends, by up access-in resource access corresponding to access-in resource assignment messages.Headend 81 at first periodically distributes reserve resource, behind the reservation signal that receives terminal 82 transmissions, just be that terminal 82 is distributed up access-in resource, the up access-in resource of having avoided always keeping more is used for the unnecessary wasting of resources that up detection causes.Especially in wired system, terminal 82 is more stable with the relativeness of headend 81, uses the up-link access method that present embodiment provides, and can effectively save up access-in resource, thereby promotes the data throughout of whole system.
In the present embodiment, if described reservation signal transmitting element 21 also is used for recognizing the reserve resource that periodically arranges, then the first orthogonal sequence is carried in the described reservation signal, sends described reservation signal by described reserve resource to described headend 81.Described up access unit 22 also is used for receiving the described up access-in resource assignment messages that carries of described headend 81 transmissions, and the up access-in resource corresponding by described access-in resource assignment messages carries out up access.
In the present embodiment, described up access unit 22 also is used for selecting second orthogonal sequence from the set of the second orthogonal sequence, the up access-in resource corresponding by described access-in resource assignment messages sends described the second orthogonal sequence to described headend 81, and the access response that carries sign that receives described headend 81 transmissions, if the sign in the described access response is identical with the sign of the second orthogonal sequence that sends to described headend 81, then finish up access.
The ascending access system structural representation that Fig. 7 provides for the embodiment of the invention.As shown in Figure 7, in the present embodiment, this ascending access system specifically comprises: the headend 81 that any embodiment of the present invention provides, and the terminal 82 that provides of a plurality of any embodiment of the present invention.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (19)
1. a up-link access method is characterized in that, comprising:
Reserve resource is set, sends the reserve resource announcement information at least one terminal, wherein, described reserve resource announcement information is in order to indicate the time location of described reserve resource;
Receive the reservation signal that described at least one terminal sends by described reserve resource respectively;
Send up access-in resource assignment messages to described at least one terminal respectively according to described reservation signal, so that described at least one terminal is carried out up access by up access-in resource corresponding to described access-in resource assignment messages.
2. up-link access method according to claim 1 is characterized in that, the described reserve resource that arranges comprises:
Described reserve resource periodically is set;
Correspondingly, at least one terminal of described reception is passed through respectively also to comprise after the reservation signal of described reserve resource transmission:
Reduce according to the cycle that arranges of described reservation signal with described reserve resource.
3. up-link access method according to claim 2 is characterized in that, describedly reduces according to the cycle that arranges of described reservation signal with described reserve resource, comprising:
In the first Preset Time, if the quantity of the described reservation signal that receives surpasses predetermined threshold value, then the cycle that arranges with described reserve resource reduces.
4. according to claim 2 or 3 described up-link access methods, it is characterized in that, after the described cycle that arranges with described reserve resource reduces, also comprise:
In the second Preset Time, if do not receive the reservation signal that other-end sends by described reserve resource, then the cycle that arranges with described reserve resource returns to initial value.
5. each described up-link access method according to claim 1-3, it is characterized in that: described reservation signal comprises the first orthogonal sequence;
Correspondingly, describedly send up access-in resource assignment messages to described at least one terminal respectively according to reservation signal, comprising:
Carry out relevant treatment according to the first orthogonal sequence in the described reservation signal, if the first relevant peaks that generates surpasses the first preset value, then described up access-in resource assignment messages is broadcasted.
6. each described up-link access method is characterized in that according to claim 1-5, described according to reservation signal respectively after described at least one terminal sends up access-in resource assignment messages, also comprise:
Receive the second orthogonal sequence that described at least one terminal sends by up access-in resource corresponding to described up access-in resource assignment messages respectively, carry out relevant treatment according to each second orthogonal sequence, if the second relevant peaks that generates surpasses the second preset value, then determine the sign of described the second orthogonal sequence, described sign is carried at transmission in the access response.
7. a up-link access method is characterized in that, comprising:
Know the time location of reserve resource according to the reserve resource announcement information that recognizes, send reservation signal by described reserve resource head-end equipment;
Receive the up access-in resource assignment messages that described headend sends, the up access-in resource corresponding by described access-in resource assignment messages carries out up access.
8. up-link access method according to claim 7 is characterized in that:
Described by described reserve resource head-end equipment transmission reservation signal, comprising:
If recognize the reserve resource that periodically arranges, then the first orthogonal sequence is carried in the described reservation signal, send described reservation signal by described reserve resource to described headend;
Correspondingly, the up access-in resource assignment messages that the described headend of described reception sends, the up access-in resource corresponding by described access-in resource assignment messages carries out up access, comprising:
Receive the broadcasting that carries described up access-in resource assignment messages that described headend sends, the up access-in resource corresponding by described access-in resource assignment messages carries out up access.
9. according to claim 7 or 8 described up-link access methods, it is characterized in that, describedly carry out up access by up access-in resource corresponding to described access-in resource assignment messages, comprising:
From the set of the second orthogonal sequence, select second orthogonal sequence, the up access-in resource corresponding by described access-in resource assignment messages sends described the second orthogonal sequence to described headend, and the access response that carries sign that receives described headend transmission, if the sign in the described access response is identical with the sign of the second orthogonal sequence that sends to described headend, then finish up access.
10. a headend is characterized in that, comprising:
The first allocation units are used for arranging reserve resource, send the reserve resource announcement information at least one terminal, and wherein, described reserve resource announcement information is in order to indicate the time location of described reserve resource;
The reservation unit is used for receiving the reservation signal that described at least one terminal sends by described reserve resource respectively;
The second allocation units are used for sending up access-in resource assignment messages to described at least one terminal respectively according to described reservation signal, so that described at least one terminal is carried out up access by up access-in resource corresponding to described access-in resource assignment messages.
11. headend according to claim 10 is characterized in that:
Described the first allocation units also are used for periodically arranging described reserve resource;
Correspondingly, described headend also comprises:
Cycle adjusting unit is set, is used for reducing according to the cycle that arranges of described reservation signal with described reserve resource.
12. headend according to claim 11, it is characterized in that: the described cycle adjusting unit that arranges also is used in the first Preset Time, if the quantity of the described reservation signal that receives surpasses predetermined threshold value, then the cycle that arranges with described reserve resource reduces.
13. according to claim 11 or 12 described headends, it is characterized in that, also comprise:
Reset unit is used in the second Preset Time, if do not receive the reservation signal that other-end sends by described reserve resource, then the cycle that arranges with described reserve resource returns to initial value.
14. each described headend according to claim 10-12, it is characterized in that: described reservation signal comprises the first orthogonal sequence;
Correspondingly, described the second allocation units also are used for carrying out relevant treatment according to the first orthogonal sequence of described reservation signal, if the first relevant peaks that generates surpasses the first preset value, then described up access-in resource assignment messages are broadcasted.
15. described headend is characterized in that according to claim 10-14, also comprises:
The access detecting unit, be used for receiving the second orthogonal sequence that described at least one terminal sends by up access-in resource corresponding to described up access-in resource assignment messages respectively, carry out relevant treatment according to each second orthogonal sequence, if the second relevant peaks that generates surpasses the second preset value, then determine the sign of described the second orthogonal sequence, described sign is carried at transmission in the access response.
16. a terminal is characterized in that, comprising:
The reservation signal transmitting element, the time location for know reserve resource according to the reserve resource announcement information that recognizes sends reservation signal by described reserve resource head-end equipment;
Up access unit is used for receiving the up access-in resource assignment messages that described headend sends, and the up access-in resource corresponding by described access-in resource assignment messages carries out up access.
17. terminal according to claim 16 is characterized in that:
If described reservation signal transmitting element also is used for recognizing the reserve resource that periodically arranges, then the first orthogonal sequence is carried in the described reservation signal, send described reservation signal by described reserve resource to described headend;
Described up access unit also is used for receiving the described up access-in resource assignment messages that carries of described headend transmission, and the up access-in resource corresponding by described access-in resource assignment messages carries out up access.
18. according to claim 16 or 17 described terminals, it is characterized in that:
Described up access unit also is used for selecting second orthogonal sequence from the set of the second orthogonal sequence, the up access-in resource corresponding by described access-in resource assignment messages sends described the second orthogonal sequence to described headend, and the access response that carries sign that receives described headend transmission, if the sign in the described access response is identical with the sign of the second orthogonal sequence that sends to described headend, then finish up access.
19. an ascending access system is characterized in that, comprising:
Such as each described headend among the claim 10-15, and a plurality of such as each described terminal among the claim 16-18.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2012/076514 WO2013181804A1 (en) | 2012-06-06 | 2012-06-06 | Uplink access method, device and system |
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| CN102907154A true CN102907154A (en) | 2013-01-30 |
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Also Published As
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| CN102907154B (en) | 2014-08-06 |
| WO2013181804A1 (en) | 2013-12-12 |
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