CN101790201A - Method and device for allocating wireless resources of single carrier orthogonal frequency division multiplexing system - Google Patents
Method and device for allocating wireless resources of single carrier orthogonal frequency division multiplexing system Download PDFInfo
- Publication number
- CN101790201A CN101790201A CN200910008408A CN200910008408A CN101790201A CN 101790201 A CN101790201 A CN 101790201A CN 200910008408 A CN200910008408 A CN 200910008408A CN 200910008408 A CN200910008408 A CN 200910008408A CN 101790201 A CN101790201 A CN 101790201A
- Authority
- CN
- China
- Prior art keywords
- user
- resource block
- wireless resource
- priority
- distribution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a method for allocating wireless resources of a single carrier orthogonal frequency division multiplexing system. The method is carried out in each time slot and comprises the following steps of: acquiring a channel state index of each user on each wireless resource block of each time slot and sorting to obtain the superior-inferior sequence of channel indexes each resource block of each user; determining the allocation priority according to the bandwidth requirement of the user on the current time slot; allocating wireless resource blocks in the system to each user according to the sequence from high to low of the allocation priority and the principle; and allocating the optimal set of channel indexes of a central wireless resource block selected from allocable wireless resource blocks meeting the bandwidth requirement of the user to the user. The invention also discloses a device for allocating the wireless resources of the single carrier orthogonal frequency division multiplexing system. The invention can dynamically and self-adaptively adjust the wireless resources occupied by each user on each time slot, improve the throughout rate of total data of the system as much as possible and simultaneously reduce the complexity for realization.
Description
Technical field
The present invention relates to ofdm system, relate in particular to the method and apparatus of allocation of radio resources in a kind of single carrier orthogonal frequency division multiplexing system.
Background technology
OFDM (OFDM) technology is a kind of multi-carrier modulation technology, it is divided into several orthogonal sub-carriers with wireless frequency spectrum, and the high speed data signal stream with the user transmits by going here and there and converting several low speed sub data flows to and be modulated on each subcarrier simultaneously.Because mutually orthogonal characteristic between subcarrier can significantly reduce mutual interference (ICI), and improve the utilance of wireless frequency spectrum.Develop the advantage that the single carrier orthogonal frequency division multiplexing technology (SC-FDMA) that has the equal power ratio of ebb on the orthogonal frequency division multiplexi basis, being established becomes up key technology in the following wireless mobile communications (B3G).
Because wireless frequency spectrum has been divided into the plurality of sub carrier wave, signal is in the division of time dimension in addition, the Radio Resource in the ofdm system thereby when being one, the structure of two dimension frequently.Usually, on frequency domain, comprise the experimental process carrier wave, comprise in time several OFDM symbols the time, frequently two-dimensional structure is defined as a wireless resource block (Resource Block abbreviates RB as).Wireless resource block is the base unit of allocation of radio resources in the ofdm system; And the single carrier orthogonal frequency division multiplexing technical stipulation is distributed to same user to several continuous wireless resource blocks on the time slot.
In the existing single carrier orthogonal frequency division multiplexing system, the distributing radio resource piece is normally realized by fixed allocation or by predefined pseudo random sequence mode of frequency hopping between time slot.
As shown in Figure 1, be the allocation of radio resources mode schematic diagram of available technology adopting pseudo-random hopping.User 1 takies 4 RB, and user 2 takies 2 RB, and user 3 takies 3 RB; At first time slot, user 1 take system 2,3,4, and 5}RB, user 2 take system 8, and 9}RB, user 3 take system 13,14,15}RB; At second time slot, user 1 take system 10,11,12, and 13}RB ...; The RB that each user takies on each time slot is good according to predefined frequency hop sequences defined, and is irrelevant with the Real-time Channel state in user's wireless environment of living in.
Adopt the mode of distributing like this to have following shortcoming:
A. can not carry out dynamic self-adapting according to user's channel status and distribute, the frequency spectrum service efficiency is not high.Each user's channel is incoherent often in the practical wireless communication systems, such as on time slot 1, may the { 2,3,4,5}RB is for the not good frequency range of user 1, and is exactly reasonable for user 2; But the existing method of salary distribution is owing to be predefined, so user 1 just can only be fixed on the at this time slot 2,3,4, on the 5}RB, can not be optimized adjustment.
B. the bandwidth fixed that takies on different time-gap of user is not considered the dynamic change at any time to the wireless bandwidth demand of upper-layer service, Qos (Quality of Service, service quality) value.
For improving the utilance of system, people such as Verdu have proposed to utilize water-filling method (the IEEE Trans.Information Theory of channel information dynamic assignment subcarrier and carrier transmit power, 39 (3): 773-785, May 1993.R.S.Cheng and S.Verd ' u.Gaussian multiaccess channels with ISI:Capacity region and multiuser water-filling), adopt this method can reach the shannon limit of channel capacity in theory; But this method need support all allocative decisions to travel through to system, then every possible method of salary distribution that traveled through is recomputated user's subchannel index, carry out repeatedly iteration again, the expense of system, complexity are all high, so only there is theoretic value.
Summary of the invention
The technical problem to be solved in the present invention is exactly at the deficiencies in the prior art, the method and apparatus that a kind of wireless resources of single carrier orthogonal frequency division multiplexing system distributes is proposed, can adjust the shared Radio Resource of each user on each time slot by dynamic self-adapting, when improving system's total data throughput as much as possible, reduce the complexity that realizes again.
In order to solve the problems of the technologies described above, the invention provides the method that a kind of wireless resources of single carrier orthogonal frequency division multiplexing system distributes, described method is carried out following steps at each time slot:
Obtain the channel status index of each user on each wireless resource block of described time slot the line ordering of going forward side by side, obtain each user's radio resource piece channel index order of quality;
Determine to distribute priority according to the bandwidth demand of user on current time slots; And
According to distribute priority order from high to low to each user by the wireless resource block in the following principle distribution system: but a set of dispense of channel status index optimum of selecting the center wireless resource block in meeting the distributing radio resource piece group of user bandwidth demand size is to this user.
Further, described channel status index is one of signal to noise ratio, channel capacity, logarithm channel capacity or combination in any.
Further, described distribution priority specifically is meant: the priority of giving user's distributing radio resource;
Determine to distribute priority in the size of the bandwidth demand on the current time slots according to the user: the user that the bandwidth demand on current time slots is big has high priority, distributes earlier; The user that bandwidth demand on current time slots is little has low priority, and the back is distributed.
Further, described bandwidth demand is dynamically determined by the application layer business or the service quality rating of user on each time slot.
Further, be meant described the distribution specifically: any wireless resource block all is not assigned to other user in the described wireless resource block group;
Described wireless resource block group specifically is meant: the wireless resource block of a wireless resource block or a plurality of adjacent continuous.
Further, wireless resource block is distributed to after each user, is also carried out:
Judge whether the user to be subjected to distributing interference effect and cause original assigned radio resource can't satisfy the situation that application layer business or service quality rating require, if having, then according to user's distribution priority adjust, the distributing radio resource piece.
The step of described adjustment further,, distributing radio resource piece comprises:
The user that can't satisfy application layer business or service quality rating requirement to original assigned radio resource expands new wireless resource block;
If the process neutralization of expansion has been distributed to other user's radio resource piece and has been clashed, the then adjustment that increases, move of the wireless resource block to affected user.
Further, follow described user during described wireless resource block to affected user increases, move adjustment and distribute priority, when the distribution pattern generating of two different priority users was conflicted, the user of high priority did not adjust, and the user of low priority adjusts; When two same priority users' distribution pattern generating is conflicted, determine a user at random or specify a user to adjust.
In order to solve the problems of the technologies described above, the present invention also provides a kind of wireless resources of single carrier orthogonal frequency division multiplexing system assigned unit, comprises channel status estimation and order module and distribution module,
Wherein, described channel status is estimated and order module is used to obtain the channel status index of each user on each wireless resource block of described time slot the line ordering of going forward side by side, and each the user's radio resource piece channel index order of quality that obtains is passed to described distribution module;
Described distribution module is used for determining to distribute priority according to the bandwidth demand of user on current time slots; And be used for according to distributing priority order from high to low to the wireless resource block of each user by following principle distribution system: but in meeting the distributing radio resource piece group of user bandwidth demand size, select a set of dispense of the channel status index optimum of center wireless resource block to give this user.
Further, described channel status index is one of signal to noise ratio, channel capacity, logarithm channel capacity or combination in any.
Further, described distribution priority specifically is meant: the priority of giving user's distributing radio resource;
Determine to distribute priority in the size of the bandwidth demand on the current time slots according to the user: the user that the bandwidth demand on current time slots is big has high priority, distributes earlier; The user that bandwidth demand on current time slots is little has low priority, and the back is distributed.
Further, described bandwidth demand is dynamically determined by the application layer business or the service quality rating of user on each time slot.
Further, be meant described the distribution specifically: any wireless resource block all is not assigned to other user in the described wireless resource block group; Described wireless resource block group specifically is meant: the wireless resource block of a wireless resource block or a plurality of adjacent continuous.
Further, described device also comprises adjusting module, described adjusting module links to each other with described distribution module, be used for allocation result according to distribution module, judge whether the user to be subjected to distributing interference effect and cause original assigned radio resource can't satisfy the situation that application layer business or service quality rating require, if have, then according to user's distribution priority adjust, the distributing radio resource piece.
Further, described adjusting module is further used for can't satisfying the user that application layer business or service quality rating require to original assigned radio resource and expands new wireless resource block; If the process neutralization of expansion has been distributed to other user's radio resource piece and has been clashed, the then adjustment that increases, move of the wireless resource block to affected user.
Further, described adjusting module is followed described user and is distributed priority the adjustment that the wireless resource block of affected user increases, moves, when the allocation result of two different priority users produces conflict, the user of high priority does not adjust, and the user of low priority adjusts; When two same priority users' allocation result produces conflict, determine a user at random or specify a user to move.
The present invention has following beneficial effect:
1, user's distribution priority is determined by the system bandwidth that the user takies on each time slot, and the user that bandwidth demand is big enjoys the high priority of distributing, and priority allocation can make the total data throughput of system maximize so as far as possible.
2, the channel status index with the wireless resource block of the interior midpoint of several continuous wireless resource blocks (being called the wireless resource block group) is similar to the sub-channel that actual allocated is given these continuous wireless resource blocks of user, and, reduced the implementation complexity that distributes like this with the foundation of this index as distribution.
3, distribute and adjustment process only needs to operate once in order and gets final product, need not repeatedly iteration, overhead is low.
4, the bandwidth (wireless resource block number) of distributing to the user is with the upper-layer service demand of this user on different time-gap, and Qos grade and channel status and dynamically determine have improved first floor system to the adaptivity of high level and the utilization ratio of radio frequency resources.
Description of drawings
Fig. 1 is the allocation of radio resources pattern schematic diagram that prior art adopts pseudo-random hopping.
Fig. 2 is the method flow diagram of the embodiment of the invention;
Fig. 3 is sub-channel structure and the subchannel index schematic diagram in the ofdm system;
Fig. 4 is the schematic representation of apparatus of the embodiment of the invention;
Fig. 5 is the wireless resource block distribution pattern schematic diagram that the present invention uses example;
Fig. 6 is the wireless resource block adjustment pattern schematic diagram that the present invention uses example;
Fig. 7 is the simulation result figure that the present invention uses example.
Embodiment
In the present invention, come wireless resource block is distributed the advantage that having can be dynamically, self adaptation is adjusted the shared Radio Resource of each user on each time slot according to the user determined distribution priority of bandwidth demand size and active user sub-channel index on each time slot.User's sub-channel index is similar to by the channel status index of this user wireless resource block of center in continuous wireless resource block (being called the wireless resource block group).Can when improving system's total data throughput as much as possible, reduce the complexity that realizes so again.
The present invention is described in detail below in conjunction with drawings and the specific embodiments.
As shown in Figure 2, the method for the embodiment of the invention is carried out following steps at each time slot:
Wherein, described channel status index includes but not limited to one of signal to noise ratio, channel capacity, logarithm channel capacity or its combination;
Estimate to obtain the channel status index of each user on each wireless resource block, described estimation approach is a prior art, repeats no more herein;
Because a wireless resource block can be regarded a channel as concerning a user, to a channel status index (with reference to Fig. 3) should be arranged.At each user described channel status index is sorted, can obtain each user's radio resource piece channel index order, correspondingly, all corresponding wireless resource block channel index sequencing table of each user.Channel status index is wireless resource block row front preferably, the wireless resource block row back that channel status index is relatively poor;
Wherein, according to distribute priority order from high to low to each user by the wireless resource block in the following principle distribution system: a set of dispense of chooser channel status index optimum is to this user in meeting the assignable wireless resource block group of user bandwidth demand size.
Described wireless resource block group specifically is meant: the wireless resource block of a wireless resource block or a plurality of adjacent continuous.
Be meant described the distribution specifically: any one wireless resource block in the described wireless resource block group all is not assigned to other user.
Described sub-channel index is similar to by the channel status index of this user wireless resource block of center in the wireless resource block group.If the number of wireless resource block is an even number in this wireless resource block group, then can be being in any one wireless resource block (or specifying one of them) in two wireless resource blocks in center in the described wireless resource block group as the center wireless resource block of this group;
According to bandwidth demand size determined distribution priority, the i.e. sequencing of Fen Peiing of user on current time slots: promptly on current time slots, the user that bandwidth demand is big has high priority, priority allocation; The user that bandwidth demand is little on current time slots has low priority, and the back is distributed.
Described bandwidth demand on current time slots is determined by upper strata (the being application layer) business or the Qos grade of user on this time slot.Because user's upper-layer service is dynamic change on different time-gap, therefore accordingly, user's bandwidth demand is also with the time slot dynamic change.
Distribution priority orders by the user is given each user the allocation of radio resources of system in conjunction with each user's radio resource piece channel index sequencing table, particularly, to certain user's distributing radio resource piece group the time, all components that meet chooser channel index optimum (promptly the center wireless resource block channel index of this group is the most forward) in the assignable wireless resource block group of this user bandwidth demand size are given this user in system.
Wherein, step 203 is an optional step, because being assigned with the wireless resource block that takies can cause interference to system, make other user's subchannel index reduce, might cause the bandwidth of the original distribution of some users to meet the demands, therefore these users are expanded new wireless resource block, might and distributing to other user's radio resource piece again in the process of expansion clashes, this step is exactly that wireless resource block to affected user increases (wireless resource block), move the adjustment of (distribution pattern), during adjustment in the same follow procedures 202 determined user's distribution priority orders carry out, when the distribution pattern generating of two different priority users is conflicted, the user of high priority does not adjust, and the user of low priority adjusts; When two same priority users' distribution pattern generating is conflicted, can determine at random that a user (perhaps specifying a user) adjusts.
Described user to low priority adjusts specifically and is meant: distribute pattern to find a wireless resource block group that can meet the bandwidth demand after this user expands in the place recently in this original user, and the arbitrary wireless resource block in should group is also unallocated gives other user, and this user's new distribution pattern is moved on this wireless resource block group.
As shown in Figure 4, the device of the embodiment of the invention comprises channel status estimation and order module, distribution module and adjusting module, and described three sequence of modules connect;
Wherein, described channel status is estimated and order module is used to obtain the channel status index of each user on each wireless resource block of described time slot the line ordering of going forward side by side, and each the user's radio resource piece channel index order of quality that obtains is passed to described distribution module;
Described distribution module is used for determining to distribute priority according to the bandwidth demand of user on current time slots; And be used for according to distributing priority order from high to low to the wireless resource block of each user by following principle distribution system: but in meeting the distributing radio resource piece group of user bandwidth demand size, select a set of dispense of the channel status index optimum of center wireless resource block to give this user.
Described adjusting module is optional module, be used for allocation result according to distribution module, judge whether the user to be subjected to distributing interference effect and cause original assigned radio resource can't satisfy the situation that application layer business or service quality rating require, if have, then according to user's distribution priority adjust, the distributing radio resource piece.
More than 3 modules constitute a complete action sequence, carry out once at interval at the duration of each time slot.
Wherein, described channel status index is including, but not limited to one of signal to noise ratio, channel capacity, logarithm channel capacity or its combination;
Determine to distribute priority in the size of the bandwidth demand on the current time slots according to the user: the user that the bandwidth demand on current time slots is big has high priority, distributes earlier; The user that bandwidth demand on current time slots is little has low priority, and the back is distributed.
Described bandwidth demand is dynamically determined by the application layer business or the service quality rating of user on each time slot;
Be meant described the distribution specifically: any wireless resource block all is not assigned to other user in the described wireless resource block group;
Described wireless resource block group specifically is meant: the wireless resource block of a wireless resource block or a plurality of adjacent continuous.
Described channel status is estimated and order module is further used for estimating to obtain the channel status index of each user on each wireless resource block, and described channel status index is sorted at each user, corresponding each user has a wireless resource block channel index sequencing table, and described wireless resource block channel index sequencing table is sent to distribution module;
Described adjusting module is further used for can't satisfying the user that application layer business or service quality rating require to original assigned radio resource and expands new wireless resource block; If the neutralization of the process of expansion has been distributed to other user's radio resource piece and clashed, then the wireless resource block of affected user is increased the adjustment of wireless resource block, mobile (distribution pattern).
Described adjusting module increases the adjustment of wireless resource block, mobile (distribution pattern) to the wireless resource block of affected user, follow described user and distribute priority, when the allocation result of two different priority users produces conflict, the user of high priority does not adjust, and the user of low priority adjusts; When two same priority users' allocation result produces conflict, determine a user at random or specify a user to move.
The user that needs are moved, find a wireless resource block group that can meet the bandwidth demand after this user expands in the place recently at its original distribution pattern, and the arbitrary wireless resource block in should group is also unallocated gives other user, and this user's new distribution pattern is moved on this wireless resource block group.
Using example with one below specifically illustrates.
At first, channel status is estimated and order module is estimated the Real-time Channel state index of each user on each wireless resource block line ordering of going forward side by side.
With reference to Fig. 3, for ofdm system, what wireless resource block (RB) was corresponding is exactly on the time slot, frequency domain is 12 subcarriers, time domain is the time-frequency two-dimensional structure (among the figure, the subcarrier of a line display in the RB, an OFDM symbol is shown in a tabulation) of 6 or 7 OFDM symbols.On a time slot, corresponding each RB of each user has a channel status index.This index can be signal to noise ratio, channel capacity, logarithm channel capacity one of them or combination in any.If this index has reflected this wireless resource block is distributed to certain user, this user's obtainable received signal quality of institute and data throughput.With the signal to noise ratio (snr) is example, and its definition is signal power (P
Signal) and noise power (P
Noise), interfering signal power sum (∑ p
Interference) ratio (when original allocation, because all RB are unloaded, so distracter is zero).
The channel status index that obtains is sorted as the foundation of next step (resource allocation) at each user:
To user 1, SNR
RB_i＞SNR
RB_j＞...＞SNR
RB_l
To user 2, SNR
RB_p＞SNR
RB_q＞...＞SNR
RB_t
To user 3 ... ..
........
Wherein, i, j, l, p, q, t are the sequence number of wireless resource block.
Then, distribution module is carried out two steps:
Bandwidth demand derives from the upper layer application business, Qos index of this user on the current time slots etc.The user of bandwidth demand maximum has best result and joins priority, and the user of bandwidth demand minimum has lowest priority.
Distribute and satisfy following two conditions:
A. continuous several RB that are assigned with (being the RB group) are idle in system;
B. satisfying under the prerequisite of A, that RB of center (centre) that is assigned with the RB group is the most forward in the channel status index ordering that channel status is estimated and order module is exported.(if the RB number of described RB group is an even number, in the middle of it two RB is arranged, and then can specify one of them RB is center RB, is as the criterion with the channel status index of this RB)
Understand how to satisfy above-mentioned two conditions with reference to Fig. 5, system will be three user's distributing radio resource at this time slot.User 1 bandwidth demand maximum (taking 5 RB), have first priority, therefore he can select in all system bandwidth resources, user 1 the 10}RB upper signal channel index the best, and so the wireless resource block that is assigned with of user 1 be exactly with the 10}RB be the center and up and down the RB of each two RB organize promptly the { 8,9,10,11,12}RB; User 3 bandwidth demand is 3 RB, have second priority, according to the clooating sequence that channel status is estimated and order module is exported, user 3 optimal wireless Resource Block is { 7}RB, so corresponding RB group (taking subchannel) is exactly { 6,7,8}, but because the { 8}RB is occupied, so can only select time good RB group, promptly 2,3,4}RB; Similarly, user 2 is assigned to the RB group: the 14,15}RB.
Because the total data throughput of system is each user data throughput sum, can improve system's total data throughput as much as possible with more preferably right of distribution therefore for the bandwidth weighting large user.In addition, because the width of a RB on frequency is much smaller than the coherence bandwidth of wireless channel, therefore can think that this user also is preferable at the subchannel that is some each RB at center with preferable RB, therefore be used as distributing according to being rational with the index of the whole distribution bandwidth of channel status index approximate substitution of center RB.
When practical application, the step 1 of distribution module (determining to distribute priority) can be carried out with the step that channel status is estimated and order module is carried out is parallel, also can carry out the step 1 of distribution module earlier, carry out the step of channel status estimation and order module again, carry out the step 2 of distribution module then.As long as distribution module obtains user's distribution priority, and user's radio resource piece channel index order, just can carry out the distribution of wireless resource block.
At last, adjusting module adjusts accordingly:
Owing to be assigned with when the wireless resource block that takies sends signal and can cause interference to other CU channel in the system, make the index of these channels reduce, sometimes even can cause original user's of distributing to bandwidth can't satisfy the requirement of upper-layer service, Qos etc., therefore affected user need expand more wireless resource block, and in expansion process may with distribute to other user's radio resource pieces and clash, the therefore adjustment that again these user's radio resource pieces is increased, moves.The purpose of adjusting module is exactly in order to realize above-mentioned adjustment function, to adjust equally and carry out according to the distribution priority orders of determining before.
With reference to Fig. 6, because inter-user interference, user 1 and user 2 need to expand 2 and 1 RB respectively, user 1 priority is higher than user 2, therefore preferentially expand to the 7 ..., 13}RB, the RB that occupies with user 1 behind the user 2 expansion RB overlaps, user 2 priority is lower than user 1, thereby moves a RB on the user 2, to the { 15,16,17}RB.
Above-mentioned steps is carried out once at interval at the duration of each time slot.
With reference to Fig. 7, be the simulation result figure of the present invention's one application example, should comprise 10 users with in the example, each user is as follows according to the RB number (initial value) that upper-layer service demand needs take:
| User's sequence number | ?1 | ??2 | ??3 | ??4 | ??5 | ??6 | ??7 | ??8 | ??9 | ??10 |
| The RB number (initially) that need take | ?2 | ??1 | ??1 | ??5 | ??4 | ??5 | ??4 | ??10 | ??10 | ??9 |
As can be seen from the figure, adopt system data throughput of the present invention, be similar to water-filling method greater than the allocation of radio resources mode that adopts fixed allocation Radio Resource mode and employing pseudo-random hopping.
In sum, the present invention can adjust the shared Radio Resource of each user on each time slot by dynamic self-adapting, when improving system's total data throughput as much as possible, reduced the complexity that realizes again, can be applicable among the E-NodeB (base station of evolution) among the B3G.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (16)
1. the method that wireless resources of single carrier orthogonal frequency division multiplexing system distributes is characterized in that, described method is carried out following steps at each time slot:
Obtain the channel status index of each user on each wireless resource block of described time slot the line ordering of going forward side by side, obtain each user's radio resource piece channel index order of quality;
Determine to distribute priority according to the bandwidth demand of user on current time slots; And
According to distribute priority order from high to low to each user by the wireless resource block in the following principle distribution system: but a set of dispense of channel status index optimum of selecting the center wireless resource block in meeting the distributing radio resource piece group of user bandwidth demand size is to this user.
2. the method for claim 1 is characterized in that, described channel status index is one of signal to noise ratio, channel capacity, logarithm channel capacity or combination in any.
3. the method for claim 1 is characterized in that, described distribution priority specifically is meant: the priority of giving user's distributing radio resource;
Determine to distribute priority in the size of the bandwidth demand on the current time slots according to the user: the user that the bandwidth demand on current time slots is big has high priority, distributes earlier; The user that bandwidth demand on current time slots is little has low priority, and the back is distributed.
4. the method for claim 1 is characterized in that, described bandwidth demand is dynamically determined by the application layer business or the service quality rating of user on each time slot.
5. the method for claim 1 is characterized in that, is meant described the distribution specifically: any wireless resource block all is not assigned to other user in the described wireless resource block group;
Described wireless resource block group specifically is meant: the wireless resource block of a wireless resource block or a plurality of adjacent continuous.
6. the method for claim 1 is characterized in that, wireless resource block is distributed to after each user, also carries out:
Judge whether the user to be subjected to distributing interference effect and cause original assigned radio resource can't satisfy the situation that application layer business or service quality rating require, if having, then according to user's distribution priority adjust, the distributing radio resource piece.
7. method as claimed in claim 6 is characterized in that, the step of described adjustment, distributing radio resource piece comprises:
The user that can't satisfy application layer business or service quality rating requirement to original assigned radio resource expands new wireless resource block;
If the process neutralization of expansion has been distributed to other user's radio resource piece and has been clashed, the then adjustment that increases, move of the wireless resource block to affected user.
8. method as claimed in claim 7, it is characterized in that, follow described user during described wireless resource block to affected user increases, move adjustment and distribute priority, when the distribution pattern generating of two different priority users is conflicted, the user of high priority does not adjust, and the user of low priority adjusts; When two same priority users' distribution pattern generating is conflicted, determine a user at random or specify a user to adjust.
9. a wireless resources of single carrier orthogonal frequency division multiplexing system assigned unit is characterized in that, comprises channel status estimation and order module and distribution module,
Wherein, described channel status is estimated and order module is used to obtain the channel status index of each user on each wireless resource block of described time slot the line ordering of going forward side by side, and each the user's radio resource piece channel index order of quality that obtains is passed to described distribution module;
Described distribution module is used for determining to distribute priority according to the bandwidth demand of user on current time slots; And be used for according to distributing priority order from high to low to the wireless resource block of each user by following principle distribution system: but in meeting the distributing radio resource piece group of user bandwidth demand size, select a set of dispense of the channel status index optimum of center wireless resource block to give this user.
10. device as claimed in claim 9 is characterized in that, described channel status index is one of signal to noise ratio, channel capacity, logarithm channel capacity or combination in any.
11. device as claimed in claim 9 is characterized in that, described distribution priority specifically is meant: the priority of giving user's distributing radio resource;
Determine to distribute priority in the size of the bandwidth demand on the current time slots according to the user: the user that the bandwidth demand on current time slots is big has high priority, distributes earlier; The user that bandwidth demand on current time slots is little has low priority, and the back is distributed.
12. device as claimed in claim 9 is characterized in that, described bandwidth demand is dynamically determined by the application layer business or the service quality rating of user on each time slot.
13. device as claimed in claim 9 is characterized in that, is meant described the distribution specifically: any wireless resource block all is not assigned to other user in the described wireless resource block group; Described wireless resource block group specifically is meant: the wireless resource block of a wireless resource block or a plurality of adjacent continuous.
14. device as claimed in claim 9, it is characterized in that, described device also comprises adjusting module, described adjusting module links to each other with described distribution module, be used for allocation result according to distribution module, judge whether the user to be subjected to distributing interference effect and cause original assigned radio resource can't satisfy the situation that application layer business or service quality rating require, if having, then according to user's distribution priority adjust, the distributing radio resource piece.
15. device as claimed in claim 9 is characterized in that, described adjusting module is further used for can't satisfying the user that application layer business or service quality rating require to original assigned radio resource and expands new wireless resource block; If the process neutralization of expansion has been distributed to other user's radio resource piece and has been clashed, the then adjustment that increases, move of the wireless resource block to affected user.
16. device as claimed in claim 15, it is characterized in that, the adjustment that described adjusting module increases, moves the wireless resource block of affected user, follow described user and distribute priority, when the allocation result of two different priority users produces conflict, the user of high priority does not adjust, and the user of low priority adjusts; When two same priority users' allocation result produces conflict, determine a user at random or specify a user to move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910008408.2A CN101790201B (en) | 2009-01-22 | 2009-01-22 | Method and device for allocating wireless resources of single carrier orthogonal frequency division multiplexing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910008408.2A CN101790201B (en) | 2009-01-22 | 2009-01-22 | Method and device for allocating wireless resources of single carrier orthogonal frequency division multiplexing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101790201A true CN101790201A (en) | 2010-07-28 |
| CN101790201B CN101790201B (en) | 2014-07-02 |
Family
ID=42533193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910008408.2A Expired - Fee Related CN101790201B (en) | 2009-01-22 | 2009-01-22 | Method and device for allocating wireless resources of single carrier orthogonal frequency division multiplexing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101790201B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917769A (en) * | 2010-08-20 | 2010-12-15 | 浙江大学 | Uplink resource allocation and scheduling method of OFDMA (Orthogonal Frequency Division Multiple Access) system based on 802.16m |
| CN102448068A (en) * | 2011-11-25 | 2012-05-09 | 南京邮电大学 | Dynamic resource block distributing method in long term evolution system |
| CN102457866A (en) * | 2010-10-29 | 2012-05-16 | 中兴通讯股份有限公司 | Method and device for establishing network in wireless network |
| CN102655645A (en) * | 2011-03-01 | 2012-09-05 | 普天信息技术研究院有限公司 | Relative-narrowband-TX-power (RNTP)-based interference suppression method in long-term evolution (LTE) system |
| CN102711262A (en) * | 2012-07-02 | 2012-10-03 | 北京交通大学 | Downlink chain resource allocation method for heterogeneous network |
| WO2012167438A1 (en) * | 2011-06-10 | 2012-12-13 | 华为技术有限公司 | Multi-subcarrier allocation method and node |
| CN103841646A (en) * | 2012-11-23 | 2014-06-04 | 北京信威通信技术股份有限公司 | Wireless resource allocation method capable of ensuring service quality |
| CN104320853A (en) * | 2014-10-23 | 2015-01-28 | 大唐移动通信设备有限公司 | Carrier sorting and balancing method and device |
| CN110574465A (en) * | 2018-04-04 | 2019-12-13 | 北京小米移动软件有限公司 | Data transmission method, device, system and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101052196A (en) * | 2006-04-04 | 2007-10-10 | 大唐移动通信设备有限公司 | Base station of orthogonal frequency division multiplex system and dispath method for it small area carrier resource |
| WO2007148611A1 (en) * | 2006-06-19 | 2007-12-27 | Ntt Docomo, Inc. | Base station, user device and method for utilizing a plurality of resource block sizes |
| CN101184317A (en) * | 2007-12-11 | 2008-05-21 | 广州杰赛科技股份有限公司 | Wireless resource allocation method and device of OFDMA system |
| CN101227226A (en) * | 2007-01-17 | 2008-07-23 | 上海无线通信研究中心 | Method for multi-business scheduling based on communication system real buffer memory |
-
2009
- 2009-01-22 CN CN200910008408.2A patent/CN101790201B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101052196A (en) * | 2006-04-04 | 2007-10-10 | 大唐移动通信设备有限公司 | Base station of orthogonal frequency division multiplex system and dispath method for it small area carrier resource |
| WO2007148611A1 (en) * | 2006-06-19 | 2007-12-27 | Ntt Docomo, Inc. | Base station, user device and method for utilizing a plurality of resource block sizes |
| CN101227226A (en) * | 2007-01-17 | 2008-07-23 | 上海无线通信研究中心 | Method for multi-business scheduling based on communication system real buffer memory |
| CN101184317A (en) * | 2007-12-11 | 2008-05-21 | 广州杰赛科技股份有限公司 | Wireless resource allocation method and device of OFDMA system |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917769B (en) * | 2010-08-20 | 2013-04-24 | 浙江大学 | Uplink resource allocation and scheduling method of OFDMA (Orthogonal Frequency Division Multiple Access) system based on 802.16m |
| CN101917769A (en) * | 2010-08-20 | 2010-12-15 | 浙江大学 | Uplink resource allocation and scheduling method of OFDMA (Orthogonal Frequency Division Multiple Access) system based on 802.16m |
| CN102457866A (en) * | 2010-10-29 | 2012-05-16 | 中兴通讯股份有限公司 | Method and device for establishing network in wireless network |
| CN102457866B (en) * | 2010-10-29 | 2015-05-20 | 中兴通讯股份有限公司 | Method and device for establishing network in wireless network |
| US9025555B2 (en) | 2010-10-29 | 2015-05-05 | Zte Corporation | Method and apparatus for establishing network in wireless network |
| CN102655645B (en) * | 2011-03-01 | 2015-02-11 | 普天信息技术研究院有限公司 | Relative-narrowband-TX-power (RNTP)-based interference suppression method in long-term evolution (LTE) system |
| CN102655645A (en) * | 2011-03-01 | 2012-09-05 | 普天信息技术研究院有限公司 | Relative-narrowband-TX-power (RNTP)-based interference suppression method in long-term evolution (LTE) system |
| CN103004270B (en) * | 2011-06-10 | 2015-07-08 | 华为技术有限公司 | Multi-subcarrier allocation method and node |
| WO2012167438A1 (en) * | 2011-06-10 | 2012-12-13 | 华为技术有限公司 | Multi-subcarrier allocation method and node |
| CN103004270A (en) * | 2011-06-10 | 2013-03-27 | 华为技术有限公司 | Multi-subcarrier allocation method and node |
| CN102448068B (en) * | 2011-11-25 | 2013-12-25 | 南京邮电大学 | Dynamic resource block distributing method in long term evolution system |
| CN102448068A (en) * | 2011-11-25 | 2012-05-09 | 南京邮电大学 | Dynamic resource block distributing method in long term evolution system |
| CN102711262B (en) * | 2012-07-02 | 2014-10-08 | 北京交通大学 | Downlink chain resource allocation method for heterogeneous network |
| CN102711262A (en) * | 2012-07-02 | 2012-10-03 | 北京交通大学 | Downlink chain resource allocation method for heterogeneous network |
| CN103841646A (en) * | 2012-11-23 | 2014-06-04 | 北京信威通信技术股份有限公司 | Wireless resource allocation method capable of ensuring service quality |
| CN104320853A (en) * | 2014-10-23 | 2015-01-28 | 大唐移动通信设备有限公司 | Carrier sorting and balancing method and device |
| CN104320853B (en) * | 2014-10-23 | 2017-12-01 | 大唐移动通信设备有限公司 | A kind of carrier wave sequence and balanced method and apparatus |
| CN110574465A (en) * | 2018-04-04 | 2019-12-13 | 北京小米移动软件有限公司 | Data transmission method, device, system and storage medium |
| CN110574465B (en) * | 2018-04-04 | 2023-08-15 | 北京小米移动软件有限公司 | Data transmission method, device, system and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101790201B (en) | 2014-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101790201B (en) | Method and device for allocating wireless resources of single carrier orthogonal frequency division multiplexing system | |
| KR101289588B1 (en) | Multi-carrier wireless network using flexible fractional frequency reuse | |
| CN109617662B (en) | Joint resource optimization method based on underwater sound OFDM-NOMA system downlink | |
| KR100966044B1 (en) | System and method for allocating frequency resource in a multicell communication system | |
| KR100689454B1 (en) | Method and apparatus for scheduling a down link channel in a orthogonal frequency divsion multiplexing access system and system using the same | |
| RU2382501C2 (en) | Method, transmission/reception device and system for configuring and controlling channels in wireless communication system using amc channels and diversity channels | |
| CN101904207B (en) | Channel arrangement method and wireless communication base station device | |
| CN107547184B (en) | Dynamic pilot frequency distribution method in large-scale MIMO system | |
| CN1891007A (en) | Method and apparatus for allocating a pilot signal adapted to the channel characteristics | |
| JP2006067572A (en) | Method for assigning sub-channel in radio network | |
| KR20070116436A (en) | Resource allocation method for orthogonal frequency division multiplexing access system | |
| CN102025461B (en) | Frequency domain scheduling method and device | |
| US8218420B2 (en) | Non-cyclic evolving-type user resource structure for OFDMA based system with null guard tones | |
| CN101621846B (en) | Frequency spectrum resource classification and division method | |
| CN1956432B (en) | Method for distributing time frequency resource in dispatching and jump frequency multisystem | |
| CN101238663A (en) | Wireless communication base station apparatus and wireless communication method in multicarrier communication | |
| CN101399800A (en) | Resource distribution information representing method based on OFDM system | |
| CN102448068A (en) | Dynamic resource block distributing method in long term evolution system | |
| CN100401658C (en) | Signalling transmitting method and cellular system therefor | |
| Marijanovic et al. | A novel optimization method for resource allocation based on mixed numerology | |
| CN101917769A (en) | Uplink resource allocation and scheduling method of OFDMA (Orthogonal Frequency Division Multiple Access) system based on 802.16m | |
| Li et al. | Resource allocation with subcarrier cooperation in OFDM-based wireless multicast system | |
| CN1773897A (en) | Resource distributing method and apparatus of dynamic time-frequency and code sequence | |
| CN103857046A (en) | Self-adaptive resource distribution method of cognition OFDM network based on spectrum filling | |
| CN104684055B (en) | A kind of orthogonal frequency and the MIMO-OFDM system DTX power optimization methods of space division mixing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171120 Address after: 518000, two 703A, COFCO business park, two Xian Xian Road, Xin'an, Shenzhen, Guangdong, Baoan District Patentee after: Shenzhen Fu Hai Sunshine Technology Co., Ltd. Address before: 518057 Nanshan District high tech Industrial Park, Guangdong, South Road, science and technology, ZTE building, legal department Patentee before: ZTE Corporation |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20190122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |