CN101299839B - Method and apparatus for resource allocation and terminal access in time-division sharing channel - Google Patents
Method and apparatus for resource allocation and terminal access in time-division sharing channel Download PDFInfo
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Abstract
Provided is a resource allocation and terminal access method in the time division sharing channel and a device thereof. In the invention, the system determines the corresponding superframe according to the structure of the frame, allocates the system using the superframe as the period for the terminal, and updates the resource allocation corresponding to the terminal using the superframe as the period, wherein the superframe includes one or a plurality of subframe(s) in the system. Moreover, the terminal accessed into the system performs the synchronization (including a physical layer synchronization and a MAC layer synchronization) and communication with the station using the superframe as the period. Therefore, the invention provides the backward compatible resource allocation aiming at the terminal of the disturbed wireless system, simplifies the process of the terminal and effectively reduces the implement complexity of the terminal.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to resource allocation and terminal access technology in a kind of time-division sharing channel.
Background technology
In wireless communication system, support the wireless device of cognition wireless technology can improve the utilance of wireless frequency spectrum, especially authorize the availability of frequency spectrum of frequency range.The wireless device of said support cognitive radio technology can dynamically perception surrounding environment, and based on adaptive its internal state of dynamic adjustment of the variation of environment, thereby effectively utilize idle frequency spectrum, and avoid interference to other system.
At present, because radio spectrum resources is limited, and the systems organization reason, make can have a plurality of wireless device operations at identical channel, cause existing between each system the phase mutual interference.For avoiding interference, then operating in needs between the wireless device of identical working channel to coordinate each other, and same channel is shared in timesharing.Promptly sometime the section in, one of them system has higher priority, can launch with maximum power, this time is called boss's frame (perhaps prime frame) of this system, this system is called main system; And other system of employing same channel at one time then must reduce the transmitting power of oneself even mourn in silence (stopping to send), and to avoid the interference to main system, this time is called the auxilliary subframe (perhaps auxilliary frame) of this system.
In wireless communication system,, do not receive the business at the terminal of neighbours' interference for being in the base station center place; Then each base station can be transmitted the business relevant with these terminals simultaneously; To improve the availability of frequency spectrum, at this moment, the subframe of employing is called common subframe or shared subframe (also have and be called shared frame).
Based on above-mentioned all types of subframe, the sub-frame allocation mode that adopts at present mainly comprises:
(1) mode one
In this mode, the sub-frame allocation mode of employing is as shown in Figure 1, and every frame all originates in common subframe C, and every N frame has a shared subframe SH, and the length of sharing subframe can be 1 frame, and therefore, shared subframe is also referred to as shared frame.Every N frame distributes boss's frame to give a system; This system is referred to as main system in this boss's frame; In this boss image duration, its neighbours system reduces transmitting power (comprise and mourning in silence); Boss's frame of main system is not caused harmful interference, corresponding during this period of time subframe is claimed the auxilliary subframe of its neighbours system.Wherein, common subframe only is assigned downlink resource, does not distribute ascending resource, and boss's frame and shared subframe then both be assigned downlink resource, were assigned ascending resource again.
(2) mode two
In this mode, the sub-frame allocation mode of employing is as shown in Figure 2, and the sub-frame allocation mode of itself and mode () is basic identical, and difference only is: both be assigned downlink resource for described common subframe, and also be assigned ascending resource.
(3) mode three
In this mode; The sub-frame allocation mode that adopts is as shown in Figure 3; The sub-frame allocation mode of itself and mode () is basic identical, and difference only is: in this sub-frame allocation mode, do not have common subframe, perhaps the common subframe partial-length is zero; Every N frame has a shared subframe, and each system gets some subframes and is its boss's frame in every N frame; In this case, the length of sharing subframe and boss's frame all is base unit with the frame, therefore, also is called respectively and shares frame and prime frame.
Traditional center control wireless communication system, a fixing pilot frequency sequence Preamble is sent at the frame head of every frame in the base station, is used for the synchronous and timing at terminal, behind this pilot frequency sequence, is right after the signaling information into MAP (physical resource mapping); Wherein, described signaling information can comprise the physical message of the descending and/or up burst (burst) that this frame transmits, for example, and the primary sign number of modulation system, coded system, Burst, the stop element number of Burst etc.
And Fig. 1; Fig. 2 and shown in Figure 3 under time-sharing channel structure, for the terminal that is in non-interference region, it can receive described Preamble and signaling through common subframe; But; For the terminal that is in the common overlay area of a plurality of systems (being interference region), then, cause correctly to be received in the base station frame head Preamble and the signaling of common subframe owing to receive the interference of neighbours system; Therefore, said Preamble and signaling also need be sent to the terminal that is in interference region through boss's frame in the base station.
Like this; For satisfying the demand that is in interference region and is in the terminal of non-interference region; The base station needs in boss's frame, common subframe or shared subframe, to send simultaneously said Preamble and signaling; This just makes the terminal need safeguard two different subframe heads and two MAP simultaneously, has increased the implementation complexity at terminal.
Summary of the invention
Embodiments of the invention provide resource allocation, terminal access method and the device in the time-division shared channel, thereby can simplify the processing procedure at terminal, reduce the realization complexity at terminal.
The embodiment of the invention provides the resource allocation methods in a kind of time-division sharing channel, comprising:
Mode according to predetermined is confirmed superframe, and said superframe comprises one or more subframes in the system;
In the corresponding super frame period of each superframe, be the terminal distribution resource in the system.
The embodiment of the invention provides the resource allocation device in a kind of time-division sharing channel, comprising:
Super frame period is confirmed the unit, is used for confirming super frame period according to predetermined mode;
Resource allocation unit is used in each super frame period, is the terminal distribution resource in the system;
Communication unit, being used for the super frame period is the cycle, is that the resource and the terminal of terminal distribution communicates according to resource allocation unit.
The embodiment of the invention provides the method that the terminal is inserted in a kind of time-division sharing channel, comprising:
It is synchronous to carry out down physical layer according to the pilot frequency sequence Search Results;
Select access base station and insert subframe according to the corresponding media access control MAC layer message of the synchronous subframe head that receives, described access subframe is boss's frame, perhaps, is common subframe or shared subframe;
In each super frame period, obtain resource allocation information, and according to the resource allocation information that obtains realize with system between communicate by letter, said superframe comprises one or more subframes in the system.
The embodiment of the invention provides the device that the terminal is inserted in a kind of time-division sharing channel, comprising:
Synchronous processing unit, it is synchronous to be used for carrying out down physical layer according to the pilot frequency sequence Search Results;
Access base station and subframe determining unit; Be used for after synchronous processing unit realizes synchronously, select access base station and insert subframe according to the corresponding MAC layer message of the synchronous subframe head that receives, described access subframe is boss's frame; Perhaps, be common subframe or shared subframe;
Communications processor element is used in each super frame period, obtaining resource allocation information, and according to the said resource allocation information that obtains realize with system between communicate by letter, described superframe comprises one or more subframes in the system.
The embodiment of the invention provides a kind of terminal, in this terminal, is provided with the device that the terminal is inserted in the described time-division sharing channel.
Technical scheme by the embodiment of the invention described above provides can find out that in the embodiment of the invention, system confirms corresponding superframe according to frame structure, and is that the cycle is the terminal distribution resource with the superframe, is the resource allocation of the cycle upgrading counterpart terminal with the superframe; And to be the cycle with the superframe carry out synchronously with the base station at the terminal and communicate by letter.Therefore, the realization of the embodiment of the invention makes the terminal only need safeguard that a sub-frame head and MAP get final product, and has simplified the processing at terminal, thereby has effectively reduced the complex design degree at terminal.
Description of drawings
Fig. 1 is that frame structure sketch map one is shared in timesharing in the prior art;
Fig. 2 is that frame structure sketch map two is shared in timesharing in the prior art;
Fig. 3 is that frame structure sketch map three is shared in timesharing in the prior art;
Fig. 4 inserts the processing procedure sketch map for the terminal that the embodiment of the invention provides;
Fig. 5 is based on the down-going synchronous relevant peaks sketch map one of OFDM physical layer in the embodiment of the invention;
Fig. 6 is based on the down-going synchronous relevant peaks sketch map two of OFDM physical layer in the embodiment of the invention;
Fig. 7 is based on the down-going synchronous relevant peaks sketch map three of OFDM physical layer in the embodiment of the invention;
Fig. 8 is based on the down-going synchronous relevant peaks sketch map four of OFDM physical layer in the embodiment of the invention;
Fig. 9 is based on the down-going synchronous relevant peaks sketch map one of OFDMA physical layer in the embodiment of the invention;
Figure 10 is based on the down-going synchronous relevant peaks sketch map two of OFDMA physical layer in the embodiment of the invention;
The structural representation one of the device that Figure 11 provides for the embodiment of the invention;
The structural representation two of the device that Figure 12 provides for the embodiment of the invention.
Embodiment
In the embodiment of the invention, system confirms corresponding superframe according to frame structure, and is that the cycle is the terminal distribution resource with the superframe, is the resource allocation of the cycle upgrading counterpart terminal with the superframe.The terminal is the cycle to carry out synchronously (comprising that physical layer synchronization is synchronous with the MAC layer) with the base station and communicate by letter with the superframe, thereby can be reduced in the processing and the implementation complexity at the terminal in the time-sharing channel system.
More specifically say, in embodiments of the present invention, in system side; System at first needs according to corresponding subframe structure; Confirm prime frame superframe and shared frame superframe, and, be the frame period Resources allocation with the prime frame super frame period to being linked into the terminal of boss's frame; With the prime frame super frame period is to upgrade the terminal information be linked into boss's frame the frame period, like MAP message etc.; For the terminal that is linked into common subframe or shared subframe; To share the frame super frame period is the frame period Resources allocation; To share the frame super frame period is to be the terminal distribution resource that is linked into common subframe or shared subframe in the frame period; Be the frame period to upgrade the terminal information that is linked into common subframe or shared subframe promptly, like MAP information etc. to share the frame super frame period.In end side, the terminal is cycle and base station communication with the prime frame super frame period, is cycle and base station communication to share the frame super frame period perhaps; Be the terminal with the prime frame super frame period being that cycle and base station keep physical layer and MAC layer synchronous, is that cycle and base station maintenance physical layer and MAC layer are synchronous to share the frame super frame period perhaps.
Wherein, Said each superframe of prime frame superframe originates in the frame head of boss's frame; The prime frame super frame period is that boss's frame frame head of same system arrives the spacing between next boss's frame frame head, i.e. the frame number and the product in actual frame cycle (being period of sub-frame) at interval between continuous two boss's frames of same system.Share each superframe of frame superframe and originate in the frame head of sharing subframe or common subframe; Shared subframe or the common subframe frame head of sharing the frame super frame period and be same system be to the next spacing of sharing between subframe or the common subframe frame head, promptly same system continuous two share or common subframe between at interval the frame number and the product in actual frame cycle.
Suppose that the actual frame cycle is Td, and the frame number of being separated by between continuous two the boss's frames in same system is L, the frame number of being separated by between continuous two shared subframes or the common subframe is M, and then the prime frame frame period equals L * Td, and the common frame frame period equals M * Td.
Concrete, to present frame structure form, provide definite method of several prime frame super frame period and shared frame super frame period below.
(1) there is the situation of common subframe
Shown in seeing figures.1.and.2, comprise common subframe in the subframe structure, promptly the frame head of each frame all has public or shared subframe to exist, and then said super frame period is:
Sharing the frame super frame period is M * Td, and M=1 then shares the frame super frame period and equals the actual frame cycle, promptly equals Td;
The prime frame super frame period is N * Td;
(2) there is not the situation of common subframe
With reference to shown in Figure 3, do not comprise common subframe in the subframe structure, then the prime frame super frame period equals to share the frame super frame period and all equals L * Td;
Based on above-mentioned this case; In embodiments of the present invention; For the terminal that is in interference range, it is merely able to be linked into boss's frame, and system will be the frame period Resources allocation with the prime frame super frame period to the terminal that is in interference range; And be to upgrade the terminal information message be linked into boss's frame, for example MAP message the frame period with the prime frame super frame period.For the terminal that is in non-interference range; It both can be linked into boss's frame; Also can be linked into common subframe or shared subframe, be in the terminal of non-interference range, can select to be linked into boss's frame; Perhaps be linked into common subframe or shared subframe, system further can also require the terminal to be linked into boss's frame or is linked into common subframe or shared subframe through being provided with.System will be the frame period Resources allocation with the prime frame super frame period to the terminal that is in interference range, is linked into boss's frame, and be the frame period to upgrade the terminal information message that is linked into boss's frame, for example MAP message with the prime frame super frame period.System will be the frame period Resources allocation to share the frame super frame period to the terminal that is in interference range, is linked into common subframe or shared subframe; And be to upgrade in the frame period to be linked into to share or the terminal information message of common subframe to share the frame super frame period, MAP message for example.
Need to prove; In this embodiment, for the terminal that is in non-interference range, the base station can also be according to current service bearer situation etc.; Be linked into specific subframe through the non-interference range of signaling request terminal; For example, if the common subframe of current base station or shared subframe loaded service amount are big, then can require non-interference range terminal to insert boss's frame; Perhaps, if boss's frame loaded service amount of current base station is big, then can require the terminal of non-interference range to be linked into common subframe or shared subframe.
Wherein, described system can be the base station, perhaps also can have the equipment of similar functions for other; Described service system then can be serving BS, perhaps, also can be used to the equipment that current terminal provides service for other are functionally similar.
The embodiment of the invention is in concrete application process; Can be the resource information of its distribution to the terminal transmission system through the MAP territory in the subframe, the MAP that the base station is sent out at boss's frame be to upgrade in the frame period with the prime frame super frame period; The MAP that the base station is sent out in common subframe or shared subframe; To share the frame super frame period is to upgrade in the frame period, in the MAP territory of boss's frame of system, transmits the MAP information relevant with the terminal that is linked into boss's frame; In the MAP territory of the common subframe of system and shared subframe, transmit and the MAP information that is linked into the terminal of common subframe or shared subframe, reducing the MAP amount of information that the terminal need be handled, thereby can further simplify the processing procedure at terminal.
The terminal is at the access to wireless communication network and carry out in the process of communication service; Need obtain corresponding frame period information; In the embodiment of the invention, specifically can in MAP message, carry corresponding prime frame super frame period or common frame super frame period as corresponding frame period information.
In embodiments of the present invention; Other broadcast that system is transmitted in common subframe and/or shared subframe, for example DCD (down channel description) and UCD message such as (up channel descriptions), with system in message such as DCD that boss's frame transmitted and UCD; Can be identical, also can be different.
For ease of understanding, accessing terminal to network under time-division sharing channel is described with the processing procedure of carrying out communication service below in conjunction with accompanying drawing to the embodiment of the invention.
Based on above-mentioned resource distribution mode, the initial access network at terminal and to carry out the processing procedure of communication service as shown in Figure 4 specifically may further comprise the steps:
In carrying out the down physical layer synchronizing process, the terminal can also further utilize the Preamble sequence characteristic, obtains some prior informations, to carry out noncoherent accumulation, improves synchronization accuracy;
The every N frame of the frame structure of what-if shared channel is (in Fig. 1 Fig. 2 and Fig. 3; N=4) repeat once, described prior information can for: if there is a common subframe, then whenever can receive a common subframe head at a distance from Td; Every in N * Td, receive (N+1) individual sub-frame head to I haven't seen you for ages; If there is not common subframe, then every separated N * Td can receive two shared Sub frame heads;
Be that example describes synchronizing process with two different systems below:
(1) OFDM (OFDM)
In the physical layer based on OFDM, each base station issues identical Preamble sequence, at this moment, specifically can comprise following two kinds of situation:
Situation one: have common subframe
If the terminal is in non-interference range; Then as shown in Figure 5, (N+1) individual Preamble sequence can will be received in the terminal in N * Td; Wherein, Every can receive a Preamble sequence at a distance from Td, in another one Preamble sequence and N Preamble sequence one be spaced apart the vertical shift between common subframe and the boss's frame, and the whenever separated N of this Preamble * Td time occurs once;
If the terminal is in interference range; Then as shown in Figure 6; The terminal in the time, can be received 2 * N Preamble sequence at N * Td, and this 2 * N Preamble sequence can be divided into two types (common subframe head and boss's frame heads); Be spaced apart frame period Td between continuous two the Preamble sequences of each type, and be spaced apart the vertical shift between common subframe and the boss's frame between two types of Preamble sequences.
Situation two: no common subframe
If the terminal is in non-interference range, then as shown in Figure 7, whenever at a distance from a super frame period, can receive two Preamble sequences, and the integral multiple that is spaced apart the frame period between these two Preamble sequences.
If the terminal is in interference range, then as shown in Figure 8, every at a distance from a frame period, can receive a Preamble sequence.
(2) OFDMA (OFDM access)
In the physical layer based on OFDMA, different Preamble sequences is sent in each base station, at this moment, equally specifically can comprise following two kinds of situation:
Situation one: have common subframe
As shown in Figure 9, the terminal is every can receive Preamble sequence (common subframe head) at a distance from Td, simultaneously, in a superframe, also can receive a Preamble sequence (boss's frame head).
Situation two: do not have common subframe
Shown in figure 10, can receive two Preamble sequences (common subframe head and boss's frame head) in each superframe of terminal.
According to the Preamble that receives under the above-mentioned various situation, just can realize the synchronous of physical layer.
The terminal also can be after searching a Preamble sequence, if this Preamble sequence and local sequence relevant peaks, are then separated the MAC layer message behind the corresponding frame head greater than specific thresholding;
(Ts is taken as N * Td to terminal records at cycle T s; Td is the frame period) in; Separate the result of the MAC layer message of each subframe head back: if can correct decoding; Then write down the pairing BSID of MAC layer message (Base Station Identification) of each subframe head back and the signal quality of reception signal, for example SNR (signal to noise ratio); If can not correct decoding, then wait for next subframe head decoding.
In this step, the terminal confirms access base station and inserts subframe, and further confirm subframe type concrete implementation can for:
If in every N frame, a MAC layer of correct decoding message only then obtains to send the BSID of this MAC message from this MAC layer message, and to select the corresponding base station of this BSID be access base station, and the subframe head before this MAC layer message is as boss's frame;
If in every N frame, the number of times of correct decoding MAC layer message then comprises greater than 1:
(1) if in every N frame; Each MAC layer message that can correct decoding is corresponding different base stations respectively, and in a superframe, the BSID occurrence number of each base station is identical; This moment, this terminal was positioned at interference range; Then select signal quality best, for example the maximum pairing base station of burst of SNR (signal to noise ratio) value is an access base station, and pairing subframe (being boss's frame) is for inserting subframe;
(2) if in every N frame, each MAC layer message that can correct decoding is all corresponding to same base station, and this moment, this terminal was positioned at non-interference range; Then select this base station as access base station; Further, preferred common subframe or shared subframe are as inserting subframe, perhaps; Further preferred signals is best in quality, and for example maximum subframe (comprising common subframe or shared subframe or the boss's frame) conduct of signal to noise ratio inserts subframe;
(3) if in every frame; Each MAC layer message that can correct decoding is respectively from different base stations; This moment, this terminal was positioned at interference range, then selected the maximum base station of identical BSID occurrence number as access base station, and preferably boss's frame of this base station is as inserting subframe; Perhaps further preferred signals is best in quality, and for example boss's frame of the signal to noise ratio of burst maximum is as inserting subframe.
In above-mentioned (2) and (3), can confirm that corresponding subframe type still is common subframe or shared subframe for boss's frame according to the information unit in MAC layer message; Perhaps, can judge also at Ts in the time that if the integral multiple of interval T d or Td has obtained identical BSID, then corresponding subframe head is the common subframe head; Perhaps, also can combine the vertical shift between common subframe and the boss's frame to confirm, if skew equals the vertical shift between common subframe and the boss's frame between two Preamble sequences, be common subframe in preceding subframe then, after subframe be boss's frame.
Because base station side is the terminal distribution up-downgoing resource that is in interference range at boss's frame only; Be the terminal distribution up-downgoing resource that is in non-interference range only in common subframe or shared subframe; Therefore, the terminal only can be inserted at boss's frame, perhaps, inserts in common subframe or shared subframe;
According to the processing of step 3, then in this step:, be to communicate by letter in the frame period with service system with the prime frame super frame period for the terminal that is linked into boss's frame; For being linked into the terminal of sharing subframe or common subframe, be to communicate by letter in the frame period with service system to share the frame super frame period.
Further, for the terminal that is linked into boss's frame, with receiving the MAP information that boss's frame issues, and according to the resource distribution of this information updating oneself; For being linked into the terminal of sharing subframe or common subframe, with receiving the MAP information that common subframe or shared subframe issue, and according to the resource distribution of this information updating oneself.
In embodiments of the present invention, system side need be to terminal down distributing resource assignment information (like MAP information), the mode of corresponding down distributing resource assignment information can for:
The resource allocation information that in boss's frame, issues comprises: the resource allocation information of boss's frame, the resource allocation information of common subframe or shared subframe, and at least one item in the resource allocation information of auxilliary boss's frame; Corresponding, in end side, its resource allocation information that can from boss's frame, obtain comprises: the resource allocation information of boss's frame, the resource allocation information of common subframe or shared subframe, and at least one item in the resource allocation information of auxilliary boss's frame;
The resource allocation information that in common subframe or shared subframe, issues comprises: the resource allocation information of boss's frame, the resource allocation information of common subframe or shared subframe, and at least one item in the resource allocation information of auxilliary boss's frame; Corresponding; In end side; Its resource allocation information that can from common subframe or shared subframe, obtain comprises: the resource allocation information of boss's frame, the resource allocation information of common subframe or shared subframe, and at least one item in the resource allocation information of auxilliary boss's frame.
System side specifically can pass through boss's frame, and/or common subframe or shared subframe has been descended in the process of down distributing resource assignment information.
System side specifically can basis be carried out issuing of resource allocation and resource allocation information with the negotiation result of end side selecting resource allocation information to issue in the process of mode and resource distribution mode.
Further, for the terminal that is linked into boss's frame, with receiving broadcast messages such as DCD that boss's frame issues and UCD, and according to the channel descriptor of this information updating oneself; For being linked into the terminal of sharing subframe or common subframe, with receiving DCD and the ucd message that common subframe or shared subframe issue, and according to the channel descriptor of this information updating oneself.
The embodiment of the invention also provides the resource allocation device in a kind of time-division sharing channel; Its concrete implementation structure such as Figure 11 and shown in Figure 12; This device is arranged at network side; Specifically can be arranged in the equipment such as base station, and this device can comprise that specifically super frame period confirms unit and resource allocation unit and communications processor element, wherein:
Described super frame period determining unit; Be used for confirming super frame period according to predetermined mode; Specifically can be used for confirming the super frame period of prime frame superframe and shared frame superframe according to predetermined mode; The frame head that originates in boss's frame of each superframe of said prime frame superframe, each superframe of said shared frame superframe originate in the frame head of shared subframe or the frame head of common subframe;
Described resource allocation unit; Be used in each super frame period, being the terminal distribution resource of system; Specifically can be used in the super frame period of each prime frame superframe or shared frame superframe correspondence; Carry out resource allocation for the terminal of access prime frame superframe in the system or the shared frame superframe of access, described shared frame superframe comprises shares subframe or common subframe.
Described communications processor element; Being used for the super frame period is the cycle, is that the resource and the terminal of terminal distribution communicates according to resource allocation unit, and specifically can be used for the prime frame super frame period is the cycle; Be the cycle perhaps, communicate with the terminal to share the frame super frame period.
With reference to shown in Figure 12, specifically can comprise in the application implementation example of said device:
(1) unit that resource allocation process is carried out at the terminal that is used to be linked into boss's frame comprises that the prime frame super frame period confirms unit, prime frame superframe MAP information process unit and prime frame superframe resource allocation process unit, wherein:
(1) the prime frame super frame period is confirmed the unit
The super frame period that this unit specifically is used to confirm to be in the terminal of interference range be between continuous two boss's frames of same system at interval; Be at interval frame number L and the product of actual frame cycle T d between continuous two boss's frames in the same system; Be that super frame period Ts is taken as L * Td; Td is the frame period, and the super frame period of confirming is offered said prime frame superframe MAP information process unit;
(2) prime frame superframe MAP information process unit
This unit specifically is used for confirming the MAP information relevant with the terminal that is linked into boss's frame; And by said communications processor element transmission; So that in the MAP of boss's frame; MAP information that will be relevant with the terminal that is linked into boss's frame is given the terminal, can comprise the super frame period that said prime frame super frame period determining unit is confirmed in the described MAP information;
(3) prime frame superframe resource allocation unit
This unit specifically is used for the prime frame super frame period, the resource that is used to communicate by letter for the terminal distribution that is linked into boss's frame, and resource allocation information sent to said prime frame superframe MAP information process unit.
(2) be used for the unit that resource allocation process is carried out at the terminal that is linked into common subframe or shared subframe is comprised that sharing the frame super frame period confirms the unit, shares frame superframe MAP information process unit and share frame superframe resource allocation process unit, wherein:
(1) shares the frame super frame period and confirm the unit
This unit specifically is used to confirm be linked into the super frame period at the terminal of common subframe or shared subframe; Described super frame period equals continuous two shared subframes of same system or the interval between the common subframe; Concrete, when having common subframe, said super frame period can be confirmed as the actual frame cycle; When not having common subframe; Said super frame period can be confirmed as between continuous two shared subframes in the same system or the common subframe frame number and the product in actual frame cycle at interval, afterwards, definite super frame period is offered said shared frame superframe MAP information process unit;
(2) share frame superframe MAP information process unit
This unit specifically is used for confirming and is linked into the relevant information in terminal of sharing subframe or common subframe; And by described communications processor element transmission; Share subframe or the relevant MAP information of common subframe is given the terminal so that in common subframe or shared subframe, send described being linked into, can comprise the super frame period that said shared frame super frame period determining unit is confirmed in the described MAP information;
(3) share frame superframe resource allocation unit
It is being the cycle to share the frame superframe that this unit specifically is used for, and for being linked into the resource that the terminal distribution of sharing subframe or common subframe is used to communicate by letter, and described resource allocation information is sent to said shared frame superframe MAP information process unit.
The embodiment of the invention also provides the device that the terminal is inserted in a kind of time-division sharing channel; This device can be provided with in the terminal; Also can be arranged at other and need realize in the similar functions equipment, its concrete implementation structure still with reference to shown in Figure 11, specifically can comprise with lower unit:
(1) synchronous processing unit
It is synchronous that this unit specifically can be used for carrying out down physical layer according to the pilot frequency sequence Search Results; The concrete implementation front of this Elementary Function is described, so be not described in detail in this;
(2) access base station and subframe are confirmed the unit
This unit specifically can be used for after synchronous processing unit realizes synchronously, selects access base station and inserts subframe according to the corresponding MAC layer message of the synchronous subframe head that receives, and described access subframe is boss's frame, perhaps, is common subframe or shared subframe;
Shown in figure 12, described access base station and subframe confirm that the unit specifically can comprise with lower unit:
MAC layer decoding unit is used for the descending MAC layer data of demodulation, and is identified in the subframe of demodulation predetermined quantity, the number of times of correct decoding MAC layer message, further, the signal to noise ratio of measurement data bag burst;
First confirms to be used for after said MAC layer decoding unit confirmed a MAC layer of correct decoding message the unit, and the base station that Base Station Identification in this MAC layer message is corresponding is as access base station, with send this MAC layer message subframe as inserting boss's frame;
Second determining unit; Be used for after said MAC layer decoding unit confirmed repeatedly correct decoding; If confirm each MAC layer message corresponding different base stations respectively, and the Base Station Identification occurrence number of each base station is identical, then selects signal quality best; The maximum base station of the signal to noise ratio that for example happens suddenly is an access base station, and corresponding boss's frame is for inserting subframe;
The 3rd determining unit; Be used for after said MAC layer decoding unit confirmed repeatedly correct decoding,, then select this base station as access base station if confirm the corresponding same base station of each MAC layer message; Preferred common subframe or shared subframe are as inserting subframe; Perhaps, preferred signals is best in quality, and for example the subframe of signal to noise ratio maximum is as inserting subframe;
The 4th determining unit; Be used for after said MAC layer decoding unit confirmed repeatedly correct decoding; If confirm the corresponding different base stations of each MAC layer message, then: select the maximum base station of same base sign occurrence number as access base station, preferably boss's frame of this base station is as inserting subframe; Perhaps, preferred signals is best in quality in each base station, and for example the maximum boss's frame of signal to noise ratio is as inserting subframe, and with the base station at this boss's frame place as access base station.
In order in said device, to pass through the recognin frame type; Confirm the demand of unit to satisfy the above-mentioned the 3rd definite unit and the 4th; Described device can also comprise the subframe type recognition unit, and it is used for according to confirming that at the information unit of MAC layer message subframe type is boss's frame or common subframe or shared subframe; Perhaps, be used to be identified in the predetermined quantity subframe, the integral multiple of introns frame period or period of sub-frame, decoding obtains identical Base Station Identification, and then corresponding subframe head is common subframe head or shared Sub frame head; Perhaps, being used to discern that skew equals the vertical shift between common subframe and the boss's frame between two pilot frequency sequences that decoding obtains, is common subframe in preceding subframe then, after subframe be boss's frame; And will discern the subframe type of confirming and offer the said the 3rd and confirm that unit and the 4th confirms the unit.
(3) communications processor element
Confirm that based on inserting subframe definite result of unit communicates processing; Specifically can be used for: in each prime frame super frame period or shared frame super frame period, obtain resource allocation information; And based on resource allocation information realize with system between communicate by letter; The start frame of said prime frame superframe is boss's frame; Frame head is boss's frame frame head; The start frame of said shared frame superframe is for sharing subframe or common subframe, and frame head is for sharing subframe or common subframe frame head;
Wherein, described communications processor element specifically can comprise with lower unit:
Prime frame superframe MAP processing unit when being used for being linked into boss's frame at the terminal, receives the MAP signaling that boss's frame of service system issues, and obtains the resource allocation conditions in superframe;
Prime frame superframe communication unit, when being used for being linked into boss's frame at the terminal, the resource allocation conditions of obtaining according to said prime frame superframe MAP processing unit communicates in the boss's frame and the service system of current service system;
Share frame superframe MAP processing unit, when being used for being linked into common subframe or shared subframe, receive the common subframe of service system or the MAP signaling that shared subframe issues, obtain the resource allocation conditions in superframe at the terminal;
Share frame superframe communication unit, be used for being linked into when sharing subframe or common subframe at the terminal, the resource allocation conditions of obtaining according to said shared frame superframe MAP processing unit communicates in the common subframe of current service system or shared subframe and service system.
Like this, when the terminal was in interference range, it only can insert through boss's frame; And only boss's frame and the service system in the current service system communicates; When the terminal was in non-interference range, it can pass through boss's frame or common subframe or shared subframe, and only at boss's frame of current service system; Perhaps, common subframe or shared subframe and service system communicate.
In sum, in embodiments of the present invention, in the system with the superframe being is the terminal distribution resource in the cycle; With the superframe is the resource allocation of the cycle upgrading counterpart terminal; The terminal is the cycle to carry out synchronously (comprising that physical layer synchronization is synchronous with the MAC layer) with the base station and communicate by letter with the superframe, and therefore, the realization of the embodiment of the invention can overcome the existing in prior technology problem; Terminal to the wireless system that is disturbed; The resource allocation of backward compatibility is provided, effectively reduces the processing procedure at terminal, and then reduce the complex design degree at terminal.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (15)
1. the resource allocation methods in the time-division sharing channel is characterized in that, comprising:
Mode according to predetermined is confirmed superframe, and said superframe comprises one or more subframes in the system;
In the corresponding super frame period of each superframe, be the terminal distribution resource in the system;
Described superframe comprises shares frame superframe and/or prime frame superframe, and each superframe of described prime frame superframe originates in the frame head of boss's frame, and corresponding prime frame super frame period is the interval between two boss's frame frame heads adjacent in the same system; Each superframe of described shared frame superframe originates in the frame head of sharing subframe or common subframe, and corresponding shared frame super frame period is the interval between adjacent in the same system two shared subframes or the common subframe frame head;
Said step for the terminal distribution resource in the system specifically comprises:
With the prime frame super frame period is the cycle, the resource that is used to communicate by letter for the terminal distribution that is linked into boss's frame; Perhaps, be the cycle to share the frame super frame period, for be linked into share subframe with or the terminal distribution of the common subframe resource that is used to communicate by letter.
2. method according to claim 1 is characterized in that, in described process for the terminal distribution resource in the system, also comprises:
At the superframe head of prime frame superframe, issue physical resource mapping MAP information to the terminal that is linked into boss's frame, the frame period information of in the MAP of boss's frame message, carrying is the prime frame super frame period; Perhaps,
At the superframe head of sharing the frame superframe, issue physical resource mapping MAP information to being linked into the terminal of sharing subframe or common subframe, in the MAP of common subframe or shared subframe message, the frame period information of carrying is for sharing the frame super frame period.
3. method according to claim 1 is characterized in that, this method also comprises:
For the terminal that is in non-interference range, the base station indicates non-interference range terminal to be linked into boss's frame through signaling, perhaps, is linked into common subframe or shared subframe.
4. method according to claim 1 is characterized in that, also comprises in described process for the terminal distribution resource in the system:
The down channel that system is transmitted in common subframe and/or shared subframe describes DCD and up channel is described UCD message, and is identical or different in DCD and UCD message that boss's frame is transmitted with system.
5. the resource allocation device in the time-division sharing channel is characterized in that, comprising:
Super frame period is confirmed the unit, is used for confirming super frame period according to predetermined mode;
Resource allocation unit is used in each super frame period, is the terminal distribution resource in the system;
Communication unit, being used for the super frame period is the cycle, is that the resource and the terminal of terminal distribution communicates according to resource allocation unit;
Described super frame period confirms that the unit specifically comprises:
The prime frame super frame period is confirmed the unit, is used for confirming that the super frame period of prime frame superframe is interval between continuous two the boss's frame frame heads of same system, the frame head that originates in boss's frame of said prime frame superframe;
Share the frame super frame period and confirm the unit, be used for confirming sharing the frame super frame period and be two adjacent shared subframes of same system and or the common subframe frame head between the interval, said shared frame superframe originate in the frame head of sharing subframe or common subframe;
Said resource allocation unit comprises:
Prime frame superframe resource allocation unit, being used for the prime frame super frame period is the cycle, the resource that is used to communicate by letter for the terminal distribution that is linked into boss's frame;
Share frame superframe resource allocation unit, being used for to share the frame super frame period is the cycle, for being linked into the resource that the terminal distribution of sharing subframe or common subframe is used to communicate by letter.
6. device according to claim 5 is characterized in that, described device also comprises:
Prime frame superframe MAP information process unit; Be used for confirming the prime frame super frame period that the unit is confirmed according to the Resource Allocation Formula and the prime frame super frame period of said prime frame superframe resource allocation unit; Confirm to be linked into the relevant MAP information in terminal of boss's frame, and send through said communication unit;
Share frame superframe MAP information process unit; Be used for confirming the shared frame super frame period that the unit is confirmed according to the Resource Allocation Formula and the shared frame super frame period of said shared frame superframe resource allocation unit; Confirm to be linked into the relevant information in terminal of sharing subframe or common subframe, and send through said communication unit.
7. the method that the terminal is inserted in the time-division sharing channel is characterized in that, comprising:
It is synchronous to carry out down physical layer according to the pilot frequency sequence Search Results;
Select access base station and insert subframe according to the corresponding media access control MAC layer message of the synchronous subframe head that receives, described access subframe is boss's frame, perhaps, is common subframe or shared subframe;
In each super frame period, obtain resource allocation information, and according to the resource allocation information that obtains realize with system between communicate by letter, said superframe comprises one or more subframes in the system;
Described superframe comprises prime frame superframe and/or shared frame superframe; Said each superframe of prime frame superframe originates in boss's frame frame head; Corresponding prime frame super frame period is the interval between two boss's frame frame heads adjacent in the same system; Said shared each superframe of frame superframe originates in frame for sharing subframe frame head or common subframe frame head, and corresponding shared frame super frame period is the interval between adjacent in the same system two shared subframes or the common subframe frame head;
The resource allocation information realization that described basis is obtained comprises with the step of communicating by letter between system:
The terminal that is linked into boss's frame receives the downstream signal of boss's frame in the corresponding super frame period of prime frame superframe, and sends upward signal at boss's frame; The terminal that is linked into shared subframe or common subframe receives the downstream signal of sharing subframe or common subframe in sharing the corresponding super frame period of frame superframe, and at shared subframe or common subframe transmission upward signal.
8. method according to claim 7 is characterized in that, described selection access base station specifically comprises with the step that inserts subframe:
If in every N frame, a MAC layer of correct decoding message only, then that Base Station Identification in this MAC layer message is corresponding base station is as access base station; With the subframe of this MAC layer message of transmission as inserting subframe; This subframe is boss's frame, and wherein, the N frame is the repetition period of the frame structure of time-division sharing channel;
If in every N frame, the number of times of correct decoding MAC layer message is for repeatedly, then:
If each MAC layer message of correct decoding corresponding different base stations respectively repeatedly, and the Base Station Identification occurrence number of each base station is identical, and then selecting the best base station of signal quality is access base station, and corresponding subframe is for inserting subframe, and this subframe is boss's frame;
If repeatedly each MAC layer message of correct decoding is all corresponding to same base station, then select this base station as access base station, and preferred common subframe or shared subframe be as inserting subframe, perhaps, the top-quality subframe of preferred signals is as inserting subframe;
If repeatedly each MAC layer message of correct decoding is respectively from different base stations; Then select the maximum base station of same base sign occurrence number as access base station; Boss's frame of preferred this base station is as inserting subframe, and perhaps the top-quality boss's frame of preferred signals is as inserting subframe.
9. according to claim 7 or 8 described methods, it is characterized in that this method also comprises:
For the terminal that is in non-interference range, select to confirm to be linked into boss's frame through receiving the signaling of sending the base station, perhaps, be linked into common subframe or shared subframe.
10. method according to claim 7 is characterized in that described method also comprises the step of judging subframe type, and this step comprises:
Confirm that according to the information unit in MAC layer message subframe type is boss's frame or common subframe or shared subframe; Perhaps,
Judgement is in every N frame, and the integral multiple in frame period or frame period deciphers obtaining identical Base Station Identification at interval, and then corresponding subframe head is the common subframe head; Perhaps,
Judging that skew equals the vertical shift between common subframe and the boss's frame between two pilot frequency sequences that decoding obtains, is common subframe in preceding subframe then, after subframe be boss's frame.
11. method according to claim 7 is characterized in that, behind the downstream signal that receives boss's frame, also comprises: the MAP signaling that boss's frame of reception service system issues, and according to the resource allocation conditions of this MAP signaling acquisition in the prime frame superframe; After receiving the downstream signal of sharing subframe or common subframe, also comprise, receive the common subframe of service system or the MAP signaling that shared subframe issues, and obtain the resource allocation conditions in sharing the frame superframe according to this MAP signaling.
12. the device that the terminal is inserted in the time-division sharing channel is characterized in that, comprising:
Synchronous processing unit, it is synchronous to be used for carrying out down physical layer according to the pilot frequency sequence Search Results;
Access base station and subframe determining unit; Be used for after synchronous processing unit realizes synchronously, select access base station and insert subframe according to the corresponding MAC layer message of the synchronous subframe head that receives, described access subframe is boss's frame; Perhaps, be common subframe or shared subframe;
Communications processor element is used in each super frame period, obtaining resource allocation information, and according to the said resource allocation information that obtains realize with system between communicate by letter, described superframe comprises one or more subframes in the system;
Described superframe comprises prime frame superframe and/or shared frame superframe; Said each superframe of prime frame superframe originates in boss's frame frame head; Corresponding prime frame super frame period is the interval between two boss's frame frame heads adjacent in the same system; Said shared each superframe of frame superframe originates in frame for sharing subframe frame head or common subframe frame head, and corresponding shared frame super frame period is the interval between adjacent in the same system two shared subframes or the common subframe frame head;
Described communications processor element specifically comprises:
Prime frame superframe MAP processing unit when being used for being linked into boss's frame at the terminal, receives the MAP signaling that boss's frame of service system issues, and obtains the resource allocation conditions in superframe;
Prime frame superframe communication unit, when being used for being linked into boss's frame at the terminal, the resource allocation conditions of obtaining according to said prime frame superframe MAP processing unit communicates in the boss's frame and the service system of current service system;
Share frame superframe MAP processing unit, when being used for being linked into common subframe or shared subframe, receive the common subframe of service system or the MAP signaling that shared subframe issues, obtain the resource allocation conditions in superframe at the terminal;
Share frame superframe communication unit, be used for being linked into when sharing subframe or common subframe at the terminal, the resource allocation conditions of obtaining according to said shared frame superframe MAP processing unit communicates in the common subframe of current service system or shared subframe and service system.
13. device according to claim 12 is characterized in that, described access base station and subframe confirm that the unit specifically comprises:
MAC layer decoding unit is used for the descending MAC layer data of demodulation, and is identified in the subframe of demodulation predetermined quantity, the number of times of correct decoding MAC layer message, and measures signal quality;
First confirms to be used for after said MAC layer decoding unit confirmed a MAC layer of correct decoding message the unit, and the base station that Base Station Identification in this MAC layer message is corresponding is as access base station, with the subframe head before this MAC layer message as inserting boss's frame;
Second determining unit; Be used for after said MAC layer decoding unit confirmed repeatedly correct decoding; If confirm each MAC layer message corresponding different base stations respectively; And the Base Station Identification occurrence number of each base station is identical, and then selecting the best base station of signal quality is access base station, and corresponding boss's frame is for inserting subframe;
The 3rd determining unit; Be used for after said MAC layer decoding unit confirmed repeatedly correct decoding; If confirm the corresponding same base station of each MAC layer message, then select this base station as access base station, preferred common subframe or shared subframe are as inserting subframe; Perhaps, preferred number top-quality subframe is as inserting subframe;
The 4th confirms the unit; Be used for after said MAC layer decoding unit confirmed repeatedly correct decoding; If confirm the corresponding different base stations of each MAC layer message, then select the maximum base station of same base sign occurrence number as access base station, preferably boss's frame of this base station is as inserting subframe; Perhaps, the top-quality boss's frame of preferred signals is as inserting subframe.
14. device according to claim 13 is characterized in that, described device also comprises:
The subframe type recognition unit is used for according to confirming that at the information unit of MAC layer message subframe type is boss's frame or common subframe or shared subframe; Perhaps, be used to be identified in the predetermined quantity subframe, the integral multiple of introns frame period or period of sub-frame, decoding obtains identical Base Station Identification, and then corresponding subframe head is common subframe head or shared Sub frame head; Perhaps, being used to discern that skew equals the vertical shift between common subframe and the boss's frame between two pilot frequency sequences that decoding obtains, is common subframe in preceding subframe then, after subframe be boss's frame; And will discern the subframe type of confirming and offer the said the 3rd and confirm that unit and the 4th confirms the unit.
15. a terminal is characterized in that, in this terminal, is provided with the device that the terminal is inserted in each described time-division sharing channel of claim 12 to claim 14.
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| CN102047585B (en) * | 2008-11-18 | 2014-01-15 | Lg电子株式会社 | A method and device for allocating a broadcast channel in a wireless mobile communication system |
| CN101945334B (en) * | 2009-07-07 | 2014-08-20 | 中兴通讯股份有限公司 | Bearing indication method of multicast broadcast service and device |
| CN102026347B (en) * | 2010-12-20 | 2016-06-15 | 中兴通讯股份有限公司 | The launching technique of a kind of uplink distance measurement signals and system thereof |
| EP3751771A1 (en) * | 2017-09-11 | 2020-12-16 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Resource allocation method and terminal |
| CN112910596B (en) * | 2021-03-26 | 2022-06-21 | 河北远东通信***工程有限公司 | TD-LTE private network system clock period synchronous calibration method |
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| CN1596022A (en) * | 2004-07-01 | 2005-03-16 | 凯明信息科技股份有限公司 | Method and apparatus of initial cell search in time division synchronous CDMA system |
| CN1741658A (en) * | 2005-09-19 | 2006-03-01 | 北京天碁科技有限公司 | A multimode mobile communication terminal and multimode switching method thereof |
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| CN1596022A (en) * | 2004-07-01 | 2005-03-16 | 凯明信息科技股份有限公司 | Method and apparatus of initial cell search in time division synchronous CDMA system |
| CN1741658A (en) * | 2005-09-19 | 2006-03-01 | 北京天碁科技有限公司 | A multimode mobile communication terminal and multimode switching method thereof |
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