CN101299630B - Method for scheduling dispersion transmission user, data communication method and net element equipment - Google Patents
Method for scheduling dispersion transmission user, data communication method and net element equipment Download PDFInfo
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Abstract
The invention discloses a method for scheduling disperse transmission users, which includes: transmitting frequency proportionality information; obtaining the time resource and band resource that the disperse transmission users can occupy according to the mappings relationship from the time frequency proportionality information to the time frequency resources occupied by the disperse transmission users; allocating scheduling time to the specific disperse transmission users requiring scheduling in the time that the disperse transmission users can occupy; allocating scheduling band to the specific disperse transmission users requiring scheduling in the band resources that the disperse transmission users can occupy; and transmitting the physical layer scheduling control signaling for informing the scheduling time and the scheduling band. The technical scheme provided by the invention can allocate better resources to the users with less physical layer scheduling control signaling.
Description
Technical field
The present invention relates to communication technical field, particularly the method for the method of scheduling dispersion transmission user, data communication and network element device.
Background technology
In 3G (Third Generation) Moblie partner program project long evolving system (3rd GenerationPartnership Project Long Term Evolution, 3GPP LTE), frequency selective scheduling and frequency diversity scheduling exist simultaneously.The user's data transmission of frequency of utilization selectivity scheduling is called concentration of transmissions, and frequency of utilization is divided the transmission of the user's data of collection scheduling to be called and disperseed transmission.The user of concentration of transmissions data is called the concentration of transmissions user, and the minimum time frequency unit of this concentration of transmissions CU is 1 Resource Block, long for subframe in time on frequency domain.Wherein, Resource Block is 12 continuous sub-carriers on the frequency domain, and 1 sub-frame length equals Transmission Time Interval 1ms.Disperse the user of transmission data to be called dispersion transmission user; The minimum time frequency unit that this dispersion transmission user takies is a number of sub-carrier on frequency domain; Minimum is OFDM (Orthogonal Frequency Division Multiplexing in time; OFDM) symbol is long, also can be 1ms.Concentration of transmissions user and dispersion transmission user can (Frequency-division multiplexing, FDM) mode be multiplexing with frequency division multiplex in subframe.
The minimum time frequency unit that can take owing to user under two kinds of transmission meanss is different, thereby need in system bandwidth, mark a part of band resource, and the data of all dispersion transmission users are transmitted in the band resource in this section.The base station can be sent the physical layer scheduling control signaling through physical layer control channel and represented the take situation of specific dispersion transmission user in spendable band resource.In order to simplify the design of physical layer scheduling control signaling; Notify all dispersion transmission users shared frequency domain ratio to base station elder generation quasistatic; Send the physical layer scheduling control signaling to dispersion transmission user then; After dispersion transmission user receives the physical layer scheduling control signaling, in the definite frequency band of frequency domain ratio, go to shine upon the truth that resource obtains this dispersion transmission user band occupancy resource.For example: notifying the shared frequency domain ratio of all dispersion transmission users to base station elder generation quasistatic is 5 Resource Block; There is a dispersion transmission user on these 5 Resource Block of a certain subframe, to take 3,3,2,2 and 2 number of sub-carrier respectively; Amount to 12 number of sub-carrier, i.e. a Resource Block; Predesignate take Resource Block number to the actual mapping ruler that takies the subcarrier situation; Make this dispersion transmission user when being taken resource and be 1 Resource Block by notice; Can automatically obtain from the position of 3,3,2,2 and 2 number of sub-carrier that on 5 Resource Block, take respectively, thereby only need in the physical layer scheduling control signaling, notify this dispersion transmission user to take 1 Resource Block through the predetermined mapped rule.
Prior art one proposes to notify through high-level signaling the number of the shared Resource Block of all dispersion transmission users with coming quasistatic, indicates the operable band resource of dispersion transmission user through the shared resource block number of dispersion transmission user to the actual mapping one by one that takies Physical Resource Block.Illustrate as follows: if in broadcast channel be that to disperse the operable resource block number of user of transmission data be NDRB=5 to the cycle notice with 10ms; And system bandwidth is 25 Resource Block; The user who disperses the transmission data so is according to preset rule; Operable Physical Resource Block is as shown in Figure 1, and the Resource Block of black is for disperseing the operable Resource Block of user of transmission data among the figure.
Prior art two is divided into MSubband subband with the whole system bandwidth; Wherein each subband is made up of the continuous physical resource piece of equal number; Bit map through a long MSubband bit in broadcast channel is come the operable subband of quasi-static notice dispersion transmission user; Wherein the corresponding subband of 0 this bit of expression can be taken by dispersion transmission user, and the corresponding subband of 1 this bit of expression can be by the concentration of transmissions CU.For reducing signaling consumption; Only use interior dispersion transmission user of interior first subframe of bit map notification broadcast channel cycle and concentration of transmissions user's subband to take situation; The occupation condition of other subframe can be known by inference through the occupation condition of first subframe, for example through the means such as bit cyclic shift in the bit map.As shown in Figure 2; System bandwidth is divided into 5 subbands, and wherein, the FDS in the diagram representes frequency diversity scheduling; FSS representes frequency selective scheduling; The interior frequency diversity scheduling of first subframe TTI0 has taken back three subbands in the current broadcast channel cycle, and promptly dispersion transmission user has taken back three subbands, and the bit map of back one subframe is the cyclic shift of dibit to the right of last subframe bit map.In broadcast channel, notify the bit map of the first subframe TTI0 to be so 1,1,0,0, and 0}, the bit map that then can know TTI1～TTI4 by inference is followed successively by { 0,0,1; 1, and 0}, 1,0,0,0,1}, { 0,1,1; 0,0} with 0,0,0,1,1}, the bit map of all the other subframes also can be analogized in proper order.
In realizing process of the present invention, the inventor finds to exist at least in the prior art following problem:
1, in the number of users of disperseing the transmission data more after a little while; Can not reach and use less physical layer scheduling control signaling to distribute more excellent this regulation goal of resource, but need between the data resource expense of physical layer scheduling control signaling overhead and scheduling distribution, get compromise as the user.Illustrate as follows: suppose in broadcast channel with 10ms to be the frequency domain ratio of the shared resource of cycle notice dispersion transmission user; And have 10 dispersion transmission users to be scheduled in the cycle at current 10ms, wherein 9 users need the running time-frequency resource of 1 Resource Block * 1ms, 1 user to need the running time-frequency resource of 6 Resource Block * 1ms respectively.For describing conveniently, in subsequent descriptions of the present invention, with the running time-frequency resource of 1 Resource Block * 1ms running time-frequency resource unit as the data occupancy of subscriber equipment.Under the situation about when not considering to make mistakes, retransmitting automatically, theoretic optimal scheduling expense is 10 physical layer scheduling control signalings and 15 running time-frequency resource units.Use the technical scheme of prior art one; Have following two kinds of situation: one, in order to save the physical layer scheduling control signaling; The frequency domain ratio of the shared resource of notice dispersion transmission user is 6 Resource Block (can satisfy its resource requirement through once dispatching in order to guarantee the maximum user of running time-frequency resource demand) in broadcast channel; The scheduling overhead of this moment is 10 physical layer scheduling control signalings and 60 running time-frequency resource units, and the data resource waste is more serious; Two, in order to save the data resource expense; The frequency domain ratio of the shared resource of notice dispersion transmission user is 2 Resource Block in broadcast channel; Then need the user of 6 Resource Block * 1ms running time-frequency resources will could satisfy its resource requirement through three scheduling at least; The scheduling overhead of this moment is 12 physical layer scheduling control signalings and 20 running time-frequency resource units, and the waste of physical layer scheduling control signaling is more serious; Use the technical scheme of prior art two; Have following two kinds of situation: one, in order to save the physical layer scheduling control signaling; The frequency domain ratio of the shared resource of notice dispersion transmission user is 2 subbands in broadcast channel; 10 Resource Block, the scheduling overhead of this moment is 10 physical layer scheduling control signalings and 100 running time-frequency resource units, the data resource waste is more serious; Two, in order to save the data resource expense; The frequency domain ratio of the shared resource of notice dispersion transmission user is 1 subband in broadcast channel; I.e. 5 Resource Block; Then need the user of 6 Resource Block * 1ms running time-frequency resources will pass through two times scheduling at least and could satisfy its resource requirement, the scheduling overhead of this moment is 11 physical layer scheduling control signalings and 50 running time-frequency resource units, and physical layer scheduling control signaling and data resource are all relatively wasted.
2, prior art is only quasi-static has notified dispersion transmission user shared frequency domain ratio; And this frequency domain ratio all subframes in the quasistatic announcement period are all effective; Thereby dispersion transmission user need be monitored physical layer control channel in all subframes; Whether be scheduled for to watch, be unfavorable for the energy-conservation of subscriber equipment.
3, at the dispersion transmission user number more after a little while because multiplexing dispersion transmission user number is few in each subframe, be unfavorable for fully obtaining the frequency diversity gain of disperseing transmission to be brought.
Summary of the invention
The embodiment of the invention provides the method for scheduling dispersion transmission user, the method and the network element device of data communication, can satisfy and use less physical layer scheduling control signaling to distribute more excellent resource as the user.
In view of this, the embodiment of the invention realizes through following technical scheme:
A kind of method of scheduling dispersion transmission user, this method comprises:
Transmission is used to notify the time-frequency percent information of time scale and frequency domain ratio;
The mapping relations of the time resource that can take to dispersion transmission user according to said time scale obtain the time resource that said dispersion transmission user can take; The mapping relations of the band resource that can take to dispersion transmission user according to said frequency band ratio obtain the band resource that said dispersion transmission user can take;
In the time resource that said dispersion transmission user can take, give the specific dispersion transmission user allocation schedule time that needs scheduling;
In the band resource that said dispersion transmission user can take, give said specific dispersion transmission user allocation schedule frequency band;
Transmission is used to notify the physical layer scheduling control signaling of said scheduling time and said dispatch frequency range.
A kind of data communications method, this method comprises:
Specific dispersion transmission user receives the time-frequency percent information that is used to notify time scale and frequency domain ratio;
The mapping relations of the time resource that can take to dispersion transmission user according to said time scale obtain the time resource that said dispersion transmission user can take; The mapping relations of the band resource that can take to dispersion transmission user according to said frequency band ratio obtain the band resource that said dispersion transmission user can take;
In said time resource, receive the physical layer scheduling control signaling that is used to notify scheduling time and dispatch frequency range from network element device;
The mapping relations of the band resource that can take to said dispersion transmission user according to the said dispatch frequency range that presets obtain the frequency resource that is scheduled;
In said scheduling time, use said frequency resource that is scheduled and said network element device to communicate.
A kind of network element device, this equipment comprises:
Time-frequency percent information transmitting element is used to send the time-frequency percent information that is used to notify time scale and frequency domain ratio;
Running time-frequency resource obtains the unit, and the mapping relations of the time resource that is used for taking to dispersion transmission user according to said time scale obtain the time resource that said dispersion transmission user can take; The mapping relations of the band resource that can take to dispersion transmission user according to said frequency domain ratio obtain the band resource that said dispersion transmission user can take;
Scheduling unit is used in the time resource that said dispersion transmission user can take, and gives the specific dispersion transmission user allocation schedule time that needs scheduling; In the band resource that said dispersion transmission user can take, give said specific dispersion transmission user allocation schedule frequency band;
Physical layer scheduling control signaling transmitting element is used to send the physical layer scheduling control signaling that is used to notify said scheduling time and said dispatch frequency range.
A technical scheme in the technique scheme has following technique effect:
1, at the dispersion transmission user number more after a little while through dispersion transmission user was assembled on the time that time scale is confirmed; Increased dispersion transmission user shared frequency domain resource in this time, thereby can satisfy through the channeling between dispersion transmission user that to use less physical layer scheduling control signaling be that the user distributes more excellent resource;
2, dispersion transmission user only need be monitored physical layer control channel in the time of being confirmed by time scale; Whether be scheduled for to watch; Need in the institute of quasistatic announcement period is free, all not monitor physical layer control channel, help dispersion transmission user equipment savings energy;
3, in the dispersion transmission user data more after a little while through dispersion transmission user was assembled on the time that time scale is confirmed; Increase dispersion transmission user shared frequency domain resource in this time, thereby can obtain frequency diversity gain preferably through the channeling between dispersion transmission user.
Description of drawings
The frequency domain ratio sketch map that Fig. 1 provides for prior art;
The frequency domain ratio sketch map that Fig. 2 provides for prior art;
The method flow diagram of the scheduling dispersion transmission user that Fig. 3 provides for the embodiment of the invention one;
Fig. 4 is the shared running time-frequency resource sketch map of dispersion transmission user that the embodiment of the invention one obtains;
The method flow diagram of the scheduling dispersion transmission user that Fig. 5 provides for the embodiment of the invention two;
The data communications method flow chart that Fig. 6 provides for the embodiment of the invention three;
The network element device structure chart that Fig. 7 provides for the embodiment of the invention four.
Embodiment
Consult Fig. 3, the embodiment of the invention one provides a kind of method of scheduling dispersion transmission user, and this method comprises:
Wherein, instruction time ratio bit Duan Yousan kind mode.Wherein, First kind of size that is this bit section and is time scale; For example, can indicate the number of subframes that quasistatic can scheduling dispersion transmission user in the cycle, perhaps; The automatic repeat requests of mixing (Hybrid AutomaticRepeat Request, HARQ) number of time slot in the communication system of structure that divide time slot (interlace); Second kind is the actual time that takies of dispersion transmission user that has mapping relations with time scale for this bit section; For example; Divide the timeslot number in the communication system of the automatic repeat requests structure of mixing of time slot, thereby, need be in the base station mapping relations of preset time ratio and timeslot number; The third is: this bit section is the numerical value that has mapping relations with the time scale size; For example; Suppose time scale can for any value in 0～10 then instruction time ratio the bit section need 4 bits, if time scale have only four kinds maybe values, as get 1,2,4,10; Then instruction time ratio the bit section be the numerical value that has mapping relations with the time scale size; Can only need 2 bits, promptly including only these four kinds maybe situation, can reduce the figure place that the bit section of ratio instruction time takies.
Bit section when representing in ratio instruction time with the quasistatic number of sub frames that dispersion transmission user can take in the cycle; Suppose that the quasistatic announcement period is a T sub-frame length, then the length of this bit section is:
wherein
representes to round up computing.
Wherein, The bit Duan Yousan kind mode of indication frequency domain ratio; First kind of size that is this bit section and is the frequency domain ratio; For example; The number of resource blocks that dispersion transmission user takies in subframe is like the scheme of prior art one, if the supposing the system bandwidth is a M Resource Block; And the frequency domain granularity is respectively K Resource Block, and the length of the bit section of indication frequency domain ratio is:
wherein
representes to round up computing; Second kind is: this bit section is the subband situation that can be taken by dispersion transmission user, and this bit section representes that with N whether respective sub-bands represented by the bit that dispersion transmission user takies, like the scheme of prior art two; The third is: this bit section is the numerical value that has mapping relations with the frequency domain scale, and the third situation of bit section of ratio is similar with above-mentioned instruction time, can reduce the figure place that the bit section of indication frequency domain ratio takies.
Illustrate; In 3GPP LTE system, suppose that system bandwidth is 25 Resource Block, the quasistatic announcement period is 10ms; And the time domain granularity and the frequency domain granularity of indication are respectively 1ms and 1 Resource Block; The required running time-frequency resource of dispersion transmission user accounts for 20% of total running time-frequency resource, and the needed running time-frequency resource size of confirming in the step 301 of scheduling dispersion transmission user is: 25 * 10 * 20%=50 running time-frequency resource unit, and the product of time scale in the step 302 and frequency domain ratio is greater than or equal to the needed running time-frequency resource size of scheduling dispersion transmission user; Thereby time scale can be configured to 4 sub-frame, and the frequency domain ratio can be configured to 13 Resource Block; The length of the bit section of the express time ratio that calculates in this step is: " log
2T
=4, then time scale is expressed as: 0100; The length of the bit section of the expression frequency domain ratio that calculates is: " log
2(M/K+1)
=5, then the frequency domain schedule of proportion is shown: 01101.
To the concentration of transmissions user in this sub-district, the signaling of carrying above-mentioned time-frequency percent information can be sent in the base station, also can not send.
This signaling can be a high-level signaling, also can be physical layer control signaling, and physical layer control signaling is the signaling through the quasi-static transmission of physical layer CCCH; High-level signaling refers to and derives from the above top signaling of physical layer, for example, and the proprietary signaling in broadcast message in the broadcast channel or upper strata.
The cycle that the signaling of time-frequency percent information is carried in transmission can be the quasistatic cycle; For example, in the 3GPPLTE system, use broadcast message notice time-frequency percent information; The time span in quasistatic cycle is 10ms, and then every 10ms sends the signaling of once carrying the time-frequency percent information; Also there are other selection modes the time that the signaling of time-frequency percent information is carried in transmission, and for example, the time span in quasistatic cycle is 10ms, can select 50ms to send out the signaling of once carrying the time-frequency percent information, does not influence realization of the present invention.
The mapping relations of the time resource situation that time scale that step 305, base station basis preset and dispersion transmission user can take; Know the time that the determined dispersion transmission user of time-frequency percent information can take; The mapping relations of the band resource situation that takies according to the frequency domain ratio that presets and dispersion transmission user are known the band resource that the determined dispersion transmission user of time-frequency percent information takies.
Time scale in the above-mentioned steps has provided the ratio situation of the time resource that dispersion transmission user can take, and the technical scheme of the embodiment of the invention configures the mapping relations of the time resource situation that time scale and dispersion transmission user can take in advance at base station and dispersion transmission user; In like manner, configure the mapping relations of the band resource situation that frequency domain ratio and dispersion transmission user can take in advance at base station and dispersion transmission user.
Example in the continuous step 302; The time scale that the base station takies through the signaling dispersion transmission user that carries the time-frequency percent information is 4 sub-frame, and the frequency domain ratio is 13 Resource Block, the mapping relations of the running time-frequency resource that can take to dispersion transmission user according to predetermined time-frequency percent information; Obtaining dispersion transmission user, to take the situation of running time-frequency resource as shown in Figure 4; Wherein, the time domain coordinate unit is 1 sub-frame, and the frequency domain coordinate unit is 1 Resource Block.
For needing the specific dispersion transmission user allocation schedule time of scheduling, the base station is this specific dispersion transmission user allocation schedule frequency band in the band resource that dispersion transmission user can take in the time that dispersion transmission user can take for step 306, base station.Wherein, the unit of this scheduling time can be subframe.
Illustrate; In the example in front, suppose to have 5 dispersion transmission user UE1～UE5, dispersion transmission user can take 13 Resource Block; Can dispatch 4 sub-frame; The base station determines specific dispersion transmission user UE1 of scheduling and UE4 in a schedulable sub-frame, for UE1 has distributed 5 Resource Block, for UE4 has distributed 6 Resource Block.
Consult Fig. 5, the embodiment of the invention two provides a kind of method of scheduling dispersion transmission user, and this method comprises:
Step 501-step 502 is identical with step 301-step 302.
All there are mapping relations in this bit section and time scale and frequency domain ratio.If the supposing the system bandwidth is a M Resource Block; The quasistatic announcement period is Tms; And the time domain granularity and the frequency domain granularity of indication are respectively 1ms and K Resource Block; Then one have (T * M/K+1) plant possible running time-frequency resource to take situation; Wherein, it also is a kind of situation that frequency band and time do not take, so+1; At this moment, the bit that takies of bit section is:
wherein
expression computing that rounds up.
Illustrate: the supposition system bandwidth is 25 Resource Block; The quasistatic announcement period is 10ms; And the time domain granularity and the frequency domain granularity of indication are respectively 1ms and 1 Resource Block; The required running time-frequency resource of dispersion transmission user accounts for 20% of total running time-frequency resource, and the needed running time-frequency resource size of confirming in the step 501 of scheduling dispersion transmission user is: 25 * 10 * 20%=50 running time-frequency resource unit.The product of time scale in the step 502 and frequency domain ratio is greater than or equal to the needed running time-frequency resource of scheduling dispersion transmission user size, thereby time scale can be configured to 4 sub-frame, and the frequency domain ratio can be configured to 13 Resource Block.Need bit: log when using bit section joint instructions
2(10 * 25/1+1)=8, preset the numerical value of this bit represents of 8 and the mapping relations of time scale and frequency domain ratio, for example, can use 00010100 express time ratio is 4 sub-frame, the frequency domain ratio is 13 Resource Block.
Step 504-step 507 is identical with step 304-step 307.
Consult Fig. 6, the embodiment of the invention three provides a kind of method of data communications method, and this method comprises:
At that time frequency ratio example information use two independently the bit section come ratio and frequency domain ratio instruction time; And the bit section of express time ratio is the size of time scale; When the bit section of expression frequency domain ratio is frequency domain ratio big or small; The mapping relations of the running time-frequency resource that can take according to the time scale that presets and frequency domain ratio and dispersion transmission user obtain the running time-frequency resource that dispersion transmission user can take.For example, time scale is 4 sub-frame, and the frequency domain ratio is 13 Resource Block, and can obtaining dispersion transmission user through predetermined mapped relation, to take the situation of running time-frequency resource as shown in Figure 4.
Frequency ratio example information used the bit section of joint instructions to come the instruction time of ratio and during the frequency domain ratio at that time; According to the mapping relations of the bit hop count value that presets to time ratio and frequency domain ratio; With; The mapping relations of the running time-frequency resource that time scale that presets and frequency domain ratio can take to dispersion transmission user obtain the running time-frequency resource that dispersion transmission user can take.For example: the bit section of joint instructions is 00010100; Can be according to the mapping relations of the bit hop count value that presets and time scale and frequency domain ratio; Being expressed as time scale is 4 sub-frame; The frequency domain ratio is 13 Resource Block, the mapping relations of the running time-frequency resource that can take to dispersion transmission user according to the time scale that presets and frequency domain ratio then, and can obtaining dispersion transmission user, to take the situation of running time-frequency resource as shown in Figure 4.
The mapping relations of step 603, the band resource that can take to dispersion transmission user according to the dispatch frequency range that presets, the frequency resource that acquisition is scheduled.
Illustrate, specific dispersion transmission user receives the physical layer scheduling control signaling in the zero hour of a sub-frame, has confirmed that the time that self is scheduled is this subframe.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to accomplish through program; This program can be stored in the computer read/write memory medium; As: ROM/RAM, disk, CD etc.
Consult Fig. 7, the embodiment of the invention four provides a kind of network element device, and this network element device can be the base station, and this network element device comprises:
Time-frequency percent information transmitting element 701 is used to send the time-frequency percent information that is used to notify time scale and frequency domain ratio;
Running time-frequency resource obtains unit 702, the mapping relations of the time resource that can take to dispersion transmission user according to time scale, the time resource that the acquisition dispersion transmission user can take; The mapping relations of the band resource that can take to dispersion transmission user according to the frequency domain ratio obtain the band resource that dispersion transmission user can take;
Scheduling unit 703 is used in the time resource that dispersion transmission user can take, and gives the specific dispersion transmission user allocation schedule time that needs scheduling; In the band resource that dispersion transmission user can take, give specific dispersion transmission user allocation schedule frequency band;
Physical layer scheduling control signaling transmitting element 704 is used to send the physical layer scheduling control signaling that is used to notify scheduling time and dispatch frequency range.
Acquiring unit 705 is used to obtain the running time-frequency resource size that dispersion transmission user need be dispatched in the quasistatic announcement period;
Time-frequency ratio computing unit 706 is used for ratio and frequency domain ratio computing time, makes the product of time scale and frequency domain ratio be greater than or equal to the running time-frequency resource size that dispersion transmission user need be dispatched;
Time-frequency percent information dispensing unit 707 is used for time scale and the frequency domain ratio calculated according to time-frequency ratio computing unit 706, and the time-frequency percent information is set.
This equipment also comprises:
The first mapping relations memory cell 708, be used for the time resource that ratio can take to dispersion transmission user memory time mapping relations and, the mapping relations of the band resource that the frequency domain ratio can take to dispersion transmission user.
The time-frequency percent information that time-frequency percent information dispensing unit 707 is provided with: use a bit represents that has mapping relations with time scale and frequency domain ratio;
This equipment also comprises: the second mapping relations memory cell 709,
The second mapping relations memory cell 709 is used for the mapping relations of stored bits position section to time ratio and frequency domain ratio.
The time-frequency percent information that said time-frequency percent information dispensing unit 707 is provided with: with the bit represents of difference scale instruction time and frequency domain scale.
Above technical scheme can find out that the embodiment of the invention has following technique effect:
1, at the dispersion transmission user number more after a little while through dispersion transmission user was assembled on the time that the time-frequency percent information is confirmed; Increased dispersion transmission user shared frequency domain resource in this time, thereby can satisfy through the channeling between dispersion transmission user that to use less physical layer scheduling control signaling be that the user distributes more excellent resource;
Suppose in broadcast channel with 10ms to be the cycle to send the time-frequency percent information to dispersion transmission user; And have 10 dispersion transmission users to be scheduled in the cycle at current 10ms, wherein 9 users need the running time-frequency resource of 1 Resource Block * 1ms, 1 user to need the running time-frequency resource of 6 Resource Block * 1ms respectively.During automatic re-transmission situation, theoretic optimal scheduling expense is 10 physical layer scheduling control signalings and 15 running time-frequency resource units when not considering to make mistakes; The technical scheme of utilizing prior art one to provide, in order to save the physical layer scheduling control signaling, scheduling overhead is 10 physical layer scheduling control signalings and 60 running time-frequency resource units, the data resource waste is more serious; Perhaps, in order to save the data resource expense, scheduling overhead is 12 physical layer scheduling control signalings and 20 running time-frequency resource units, and the waste of physical layer scheduling control signaling is more serious; Use the technical scheme of the embodiment of the invention; The time scale that possibly distribute is 2 sub-frame; The frequency domain ratio is 8 Resource Block, thereby the dispersion transmission user of the running time-frequency resource of 1 Resource Block * 1ms of 7 needs can be dispatched in the base station in first subframe of distributing; The dispersion transmission user of the running time-frequency resource of the dispersion transmission user of the running time-frequency resource of 1 Resource Block * 1ms of 2 needs of scheduling and 6 Resource Block * 1ms of 1 needs in second sub-frame of distributing; At this moment, scheduling overhead is 10 physical layer scheduling control signalings and 16 running time-frequency resource units, and is visible; The optimal scheduling expense of the scheduling overhead of the technical scheme that the embodiment of the invention provides on can well approximation theory, the contrast table of scheduling overhead is as shown in table 1:
2, be used to notify the time-frequency percent information of time scale and frequency domain ratio through transmission; Make dispersion transmission user only need in the subframe of confirming by time scale, monitor the physical layer CCCH; Whether be scheduled for to watch; Need all not monitor physical layer control channel in all subframes in the quasistatic announcement period, help dispersion transmission user equipment savings energy;
3, at the dispersion transmission user number more after a little while through dispersion transmission user was assembled on the time that the time-frequency percent information is confirmed; Increase dispersion transmission user shared frequency domain resource in this time, thereby can obtain frequency diversity gain preferably through the channeling between dispersion transmission user.
More than the method for a kind of scheduling dispersion transmission user provided by the present invention, the method and the network element device of data communication have been carried out detailed introduction; Used concrete example among this paper principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (16)
1. the method for a scheduling dispersion transmission user is characterized in that, this method comprises:
The dispersion transmission user of base station in the sub-district sends the time-frequency percent information that is used to notify time scale and frequency domain ratio;
The mapping relations of the time resource that said base station can take to dispersion transmission user according to said time scale obtain the time resource that said dispersion transmission user can take; The mapping relations of the band resource that said base station can take to dispersion transmission user according to said frequency domain ratio obtain the band resource that said dispersion transmission user can take;
The specific dispersion transmission user allocation schedule time that needs scheduling is given in said base station in the time resource that said dispersion transmission user can take;
Said specific dispersion transmission user allocation schedule frequency band is given in said base station in the band resource that said dispersion transmission user can take;
The physical layer scheduling control signaling that is used to notify said scheduling time and said dispatch frequency range is sent in said base station.
2. method according to claim 1 is characterized in that, further comprises:
Said base station obtains the running time-frequency resource size that said dispersion transmission user need be dispatched in the quasistatic announcement period;
Said time scale and said frequency domain ratio are calculated in said base station, make the product of said time scale and said frequency domain ratio be greater than or equal to said running time-frequency resource size;
Said base station is provided for notifying the time-frequency percent information of said time scale and said frequency domain ratio.
3. method according to claim 2 is characterized in that:
Said time scale is the timeslot number in the communication system of the automatic repeat requests structure of the mixing of branch time slot.
4. method according to claim 2 is characterized in that:
Said base station is provided for notifying the mode of the time-frequency percent information of said time scale and said frequency domain ratio to be:
Said base station is provided with uses the time-frequency percent information that all has a bit represents of mapping relations with said time scale and said frequency domain ratio.
5. method according to claim 2 is characterized in that:
Said base station is provided for notifying the mode of the time-frequency percent information of said time scale and said frequency domain ratio to be:
Said base station is provided with the time-frequency percent information with two bit represents of difference ratio instruction time and frequency domain ratio.
6. method according to claim 5 is characterized in that:
Said instruction time, the bit section of ratio was the time scale size, or, the time that exists the said dispersion transmission user of mapping relations to take with said time scale, or, there is the numerical value of mapping relations with said time scale size.
7. method according to claim 6 is characterized in that:
The time that exists the said dispersion transmission user of mapping relations to take with said time scale is: the timeslot number in the communication system of mixing automatic repeat requests structure of branch time slot;
The said mode that the time-frequency percent information of two bit represents using ratio and the frequency domain ratio of instruction time respectively is set is:
According to the mapping relations of said time scale and said timeslot number, be provided with the time-frequency percent information of said timeslot number with the bit represents of indication frequency domain ratio;
This method also comprises:
The mapping relations of said time scale and said timeslot number are preset in said base station.
8. method according to claim 2 is characterized in that:
The mode that the dispersion transmission user of said base station in the sub-district sends the time-frequency percent information be used to notify time scale and frequency domain ratio is:
The above top signaling of physical layer of carrying said time-frequency percent information is sent in said base station, perhaps carries the physical layer control signaling of said time-frequency percent information.
9. method according to claim 8 is characterized in that:
The above top signaling of said physical layer is the broadcast message in the broadcast channel.
10. a data communications method is characterized in that, this method comprises:
Specific dispersion transmission user receives the time-frequency percent information that is used to notify time scale and frequency domain ratio;
The mapping relations of the time resource that can take to dispersion transmission user according to said time scale, said specific dispersion transmission user obtains the time resource that said dispersion transmission user can take; The mapping relations of the band resource that can take to dispersion transmission user according to said frequency domain ratio obtain the band resource that said dispersion transmission user can take;
Said specific dispersion transmission user receives the physical layer scheduling control signaling that is used to notify scheduling time and dispatch frequency range from network element device in said time resource;
The mapping relations of the band resource that said specific dispersion transmission user can take to said dispersion transmission user according to the said dispatch frequency range that presets, the frequency resource that acquisition is scheduled;
Said specific dispersion transmission user uses said frequency resource that is scheduled and said network element device to communicate in said scheduling time.
11. method according to claim 10 is characterized in that:
This method also comprises:
Said specific dispersion transmission user presets the mapping relations of the time resource that said time scale can take to dispersion transmission user;
Said specific dispersion transmission user presets the mapping relations of the band resource that said frequency domain ratio can take to dispersion transmission user.
12. a network element device is characterized in that, this equipment comprises:
Time-frequency percent information transmitting element is used to send the time-frequency percent information that is used to notify time scale and frequency domain ratio;
Running time-frequency resource obtains the unit, and the mapping relations of the time resource that is used for taking to dispersion transmission user according to said time scale obtain the time resource that said dispersion transmission user can take; The mapping relations of the band resource that can take to dispersion transmission user according to said frequency domain ratio obtain the band resource that said dispersion transmission user can take;
Scheduling unit is used in the time resource that said dispersion transmission user can take, and gives the specific dispersion transmission user allocation schedule time that needs scheduling; In the band resource that said dispersion transmission user can take, give said specific dispersion transmission user allocation schedule frequency band;
Physical layer scheduling control signaling transmitting element is used to send the physical layer scheduling control signaling that is used to notify said scheduling time and said dispatch frequency range.
13. equipment according to claim 12 is characterized in that:
Acquiring unit is used to obtain the running time-frequency resource size that said dispersion transmission user need be dispatched in the quasistatic announcement period;
Time-frequency ratio computing unit is used to calculate said time scale and said frequency domain ratio, makes the product of said time scale and said frequency domain ratio be greater than or equal to said running time-frequency resource size;
Time-frequency percent information dispensing unit is used for time scale and the frequency domain ratio calculated according to said time-frequency ratio computing unit, and said time-frequency percent information is set.
14. equipment according to claim 13 is characterized in that:
This equipment also comprises:
The first mapping relations memory cell, be used to store the time resource that said time scale can take to dispersion transmission user mapping relations and, the mapping relations of the band resource that said frequency domain ratio can take to dispersion transmission user.
15. equipment according to claim 14 is characterized in that:
The time-frequency percent information that said time-frequency percent information dispensing unit is provided with: use a bit represents that all has mapping relations with said time scale and said frequency domain ratio;
This equipment also comprises: the second mapping relations memory cell,
The second mapping relations memory cell is used to store the mapping relations of said bit section to said time scale and said frequency domain ratio.
16. equipment according to claim 14 is characterized in that:
The time-frequency percent information that said time-frequency percent information dispensing unit is provided with: with two bit represents of difference ratio instruction time and frequency domain ratio.
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| CN108738137B (en) * | 2017-04-14 | 2021-08-03 | 普天信息技术有限公司 | Processing method and device for sending PBCH |
| CA3062807A1 (en) | 2017-05-02 | 2019-11-28 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for transmitting signal, network device and terminal device |
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| US20050201476A1 (en) * | 2004-03-12 | 2005-09-15 | Samsung Electronics Co., Ltd. | Method and apparatus for allocating subcarriers in a broadband wireless communication system using multiple carriers |
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| WO2005086384A1 (en) * | 2004-03-05 | 2005-09-15 | Samsung Electronics Co., Ltd. | Method for allocating a subchannel in an orthogonal frequency division multiple access cellular communication system |
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