CN101848498B - Resource allocation method and base station of high speed downlink packet access - Google Patents
Resource allocation method and base station of high speed downlink packet access Download PDFInfo
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Abstract
The invention relates to a resource allocation method and a base station of high speed downlink packet access. One embodiment of the resource allocation method of high speed downlink packet access comprises the following steps of: presetting a corresponding relationship between a speed range and the maximum code channel number in a time slot; calculating the movement speed of a user terminal by the base station; determining the maximum code channel number in the time slot by the base station according to the preset corresponding relationship when the movement speed of the terminal is in the preset speed range; allocating maximum time slots which can be applied to transmission service channels; allocating code channel resources by a code division mode; setting the code channel number occupied by each time slot not to exceed the maximum code channel number; and scheduling the user terminal by the base station by using the allocated resource.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of high speed downlink packet inserts (HighSpeed Downlink Packet Access, resource allocation methods and base station in HSDPA).
Background technology
In wireless communication system, base station (NodeB) need be user terminal (User Equipment, UE) distribution physical resource, thereby the physical resource transmitting data that is distributing.In the TD-SCDMA system, physical resource not only has the notion of code channel, and (visible its resource allocation is two-dimentional for Time Slot, notion TS) to also have time slot.And the physical resource of base station assigns can change in certain limit.
HSDPA with TD-SCDMA is an example, and mainly (HighSpeed Downlink Sharing CHannel HS-DSCH) strengthens the transmittability of air interface through introducing high speed descending sharing channel for it.HS-DSCH is a shared high-speed down data passage, can share the HS-DSCH channel through time division multiplexing or code division multiplexing to different UE.HS-DSCH is a transmission channel, and it is mapped to the physical channel high-speed physical downlink shared channel (HS-PDSCH), and (High Speed Physical Downlink Sharing CHannel transmits after HS-PDSCH).
Resource allocation methods during prior art high speed downlink grouped inserts can be as shown in Figure 1, comprising:
S110: the base station is through High-Speed Shared Control Channel (High Speed Sharing Control CHannel; HS-SCCH) indication of transport format resource in (Transport Format Resource Information, TFRI) the field physical resource that will use to UE indication HS-DSCH.
The TFRI field comprises structure as shown in Figure 2.In Fig. 2, the initial code channel that this UE of Strt code indication takies, the termination code channel that this UE of Stop code indication takies, the shared code channel of UE is continuous on numbering.TS2 indicates UE to take which time slot in the time slot 2 to 6 respectively to TS6.In the occupied time slot, the code channel from Start code to Stop code will carry the descending shared data of this UE.That is, it is identical that the code channel of the shared time slot of UE distributes, and is continuous.UE need monitor the physical resource of indicating among the HS-SCCH, and promptly monitored base stations is physical resources such as HS-DSCH distributed time slot and code channel, thus the data on can be in the subsequent process correct parsing HS-DSCH of UE.
S120:UE goes up the physical resource information of the HS-DSCH use of indication according to the HS-SCCH that receives; Measure the channel quality on this physical resource; Obtain channel quality indication (Channel QualityIndicator; CQI) information is fed back this CQI through high speed uplink control channel (HS-SICH) and is given the base station.
UE is at each Transmission Time Interval (Transmission Time Interval; TTI) produce the corresponding CQI of a channel quality; If base station indication HS-DSCH is configured on a plurality of time slots, the CQI that then produces is the value of CQI after average treatment of each time slot in these a plurality of time slots.HS-DSCH is configured in the situation on a plurality of time slots, and is concrete, uses the mean value of the channel quality of each time slot to produce a CQI; Here said channel quality; Be signal-to-jamming ratio (Signal Noise Ratio, SNR), the process that produces CQI can obtain through mapping; Promptly, obtain corresponding CQI by mapping table according to the SNR that measures.CQI comprise recommendation transmission block size (Transfer Block Size, TBS) and recommend modulation format.
S130: follow-up scheduling and the transfer of data on the HS-PDSCH are carried out according to the CQI of feedback in the base station.
In this step, the base station adopts the resource of TFRI field indication at the HS-PDSCH transmitting data, and wherein, the TBS of the The data of transmission and modulation format are confirmed with reference to the feedback among the CQI.
Time division way is adopted in the base station in the prior art when Resources allocation, as far as possible all code channel resources in the time slot is distributed to a UE, and so generally speaking this UE can take fewer time slot.This mode is only applicable to the scene that UE is in low-speed motion, and is not suitable for the scene that UE is in high-speed motion.This is because in the scene of UE low-speed motion, channel variation is slow; The channel quality of certain time slot changes in a bit of time subsequently not quite; Thereby the time division way that adopts during for the prior art Resources allocation, that no matter produce is the corresponding CQI of a channel quality, still each time slot channel quality CQI after average treatment of a plurality of time slots; Can not lose efficacy, actual channel situation matches basically when promptly sending data with subsequent base stations.And under UE high-speed motion scene; Channel variation is then very fast, and promptly quality of channel differs in very little moment maybe difference very big in front and back, if still adopt existing time division way; Because it is less to distribute to the time slot of UE; UE only carries out measurement and report to the CQI of less time slot (like one or two time slot), and when then subsequent base stations was sent data, bigger variation had taken place actual channel conditions probably; Thereby differ greatly with the CQI that UE before reports, thereby can cause the deterioration of subsequent data transmission process performance.Sometimes, this species diversity or even reciprocal variation, for example; Adopt the time-division scheduling mode, a time slot has been distributed to UE in the base station, when UE detects channel quality; Detect good channel quality (less), thereby the CQI that reports embodies a good channel quality, and the base station is after obtaining the CQI of terminal to report like channel fading; When further this UE being carried out follow-up scheduling, channel circumstance changes (bigger like fading ratio), at this moment; The actual data transfer poor-performing will be caused as also adopting the CQI transmission data of feedback in the base station.
Summary of the invention
The purpose of the embodiment of the invention provides resource allocation methods and the base station in a kind of high speed downlink packet access, with the performance of data transmission procedure under the scene that guarantees the UE high-speed motion.
For solving the problems of the technologies described above, the embodiment of the invention provides resource allocation methods and the base station in a kind of high speed downlink packet access to be achieved in that
Resource allocation methods embodiment during a kind of high speed downlink packet inserts, the corresponding relation of maximum code channel number in pre-set velocity interval and the time slot, and comprise:
The translational speed of user terminal is calculated in the base station;
When portable terminal speed fell into preset speed interval, maximum code channel number in the time slot was confirmed according to preset corresponding relation in the base station;
The base station is that user terminal adopts following mode Resources allocation: distribute the maximum time slots that can be used for the transport service channel; Adopt sign indicating number branch mode to distribute code channel resource; The code channel number of setting each Time Slot Occupancy is no more than said maximum code channel number;
The base station utilizes the scheduling of resource user terminal of said distribution.
A kind of base station embodiment comprises:
The speed calculation unit is used to calculate the translational speed of user terminal;
Maximum code channel number is confirmed the unit, when portable terminal speed falls into preset speed interval, is used for confirming the time slot maximum code channel number according to preset corresponding relation;
Resource allocation unit is used to user terminal and adopts following mode Resources allocation: distribute the maximum time slots that can be used for the transport service channel; Adopt sign indicating number branch mode to distribute code channel resource; The code channel number of setting each Time Slot Occupancy is no more than said maximum code channel number;
Scheduling unit is used to utilize the scheduling of resource user terminal of said distribution.
Technical scheme by the above embodiment of the invention provides is visible, the corresponding relation of maximum code channel number in pre-set velocity interval and the time slot, and the translational speed of user terminal is calculated in the base station; When portable terminal speed fell into preset speed interval, maximum code channel number in the time slot was confirmed according to preset corresponding relation in the base station; The base station is that user terminal adopts following mode Resources allocation: distribute the maximum time slots that can be used for the transport service channel; Adopt sign indicating number branch mode to distribute code channel resource; The code channel number of setting each Time Slot Occupancy is no more than said maximum code channel number; The base station utilizes the scheduling of resource user terminal of said distribution, like this, can adapt to the resource allocation demand under the scene that UE is in high-speed motion, thereby can guarantee the performance of data transmission procedure.
Description of drawings
In order to be illustrated more clearly in the application embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment that put down in writing among the application, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the resource allocation methods flow chart during prior art high speed downlink grouped inserts;
Fig. 2 is the structure chart of TFRI field in the prior art;
Fig. 3 is the flow chart of the resource allocation methods embodiment in the access of the present invention's one high speed downlink packet;
Fig. 4 is the sketch map of slow fading of the present invention and rapid fading;
Fig. 5 is the block diagram of the present invention one base station embodiment.
Embodiment
The embodiment of the invention provides resource allocation methods and the base station in a kind of high speed downlink packet access.
In order to make those skilled in the art person understand the technical scheme among the application better; To combine the accompanying drawing among the application embodiment below; Technical scheme among the application embodiment is carried out clear, intactly description; Obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all should belong to the scope of the present invention's protection.
As previously mentioned; For the resource distribution mode of time division way in the prior art, because channel variation is very fast, the actual channel conditions of the CQI that only one or two time slot is measured when sending data afterwards differs greatly when UE is in the scene of high-speed mobile; Sometimes or even reciprocal variation; Therefore, such time division way causes CQI to lose efficacy, on the contrary degrade performance.
And if the employing sign indicating number divides the code channel resource of mode to distribute; What then the measurement of SNR embodied is the mean value of a plurality of time slots, under high-speed case, measures for the SNR that obtains according to a plurality of time slot average computation; Timeslot number is many more; The CQI of feedback can reflect the variation of channel circumstance more exactly, correspondingly, more can accurately reflect the actual conditions in the following transmission data moment according to the CQI value of feedback of this mean value calculation.
So be in the resource distribution mode of considering in the high-speed mobile scene based on the sign indicating number branch at UE among the application.
When sign indicating number divides the mode dispatched users, different UEs will take different code channel resources, and different UEs can adopt different spreading codes.In actual environment, because the interference of noise and adjacent other UE of sub-district, can not be complete quadrature between the used spreading code of different code channels, but certain correlation is arranged.Like this; When resolving the information of a code channel, because the spreading code on this code channel and the non-complete quadrature of the spreading code on other code channel, so other code channel will cause certain interference to this code channel; And the more interference between mutually of the code channel of configuration are just big more.From the above, if more than one of the code channel of configuration, then the interference meeting between the UE increases along with the increase of code channel number, causes the mis-behave of transfer of data.Be in the scene of high-speed mobile at UE, it is even more serious that this point influence will embody.This be because, be to carry out channel estimating among the TD-SCDMA with midamble, resolve the data symbol at midamble two ends then.In the process of resolution data symbol, can utilize the corresponding channel estimation results of each code channel to carry out interference eliminated, to disturb between the code channel of offsetting part.Be in the scene of high-speed mobile at UE, because the channel fading variation is very fast, and the decline of distinct symbols position is all different in the same time slot; The channel estimation results that then utilizes midamble partly to obtain can't accurately embody the channel quality of data symbol part; So other code channel to the interference of this code channel, especially to the interference of this code channel data symbolic component, can't be eliminated clean through the channel estimation results that is partly obtained by midamble; Otherwise the residual meeting of this interference is bigger.So, being in the compared that low speed moves with UE, UE disturbs more obvious between the code channel under the high-speed moving state.
By on can know, maximum code channel number in the time slot that needs restraint, and maximum code channel number is relevant with the translational speed of UE in the time slot, therefore, can the interval time slot corresponding of pre-set velocity in maximum code channel number.Corresponding content that should be preset can (Radio Network Controller RNC) sets, and also can be set by the base station by radio network controller.
Below provide object lesson.
Can be divided into 5 sections like speed interval, be respectively in the 100km/h, 100km/h～200km/h, 200km/h～300km/h, 300km/h～400km/h, more than the 400km/h.Then maximum code channel number can be as shown in table 1 below in the interval time slot corresponding of friction speed:
| Speed interval | Maximum code channel number in the time slot |
| In the 100km/h | 16 |
| 100km/h～200km/h | 16 |
| 200km/h～300km/h | 12 |
| 300km/h～400km/h | 8 |
| More than the 400km/h | 8 |
Maximum code channel number corresponding relation example in table 1. speed interval and the time slot
Visible by top table 1, under the low speed (in the 100km/h), maximum code channel number is 16 in the time slot, promptly can take code channel resources all in the time slot; At a high speed down (in this example in the correspondence table 1 greater than each speed interval of 100km/h), maximum code channel number is for example got recommendations such as 12,8 smaller or equal to 16 in the time slot, specifically can confirm according to the scope of speed interval.Special, when speed was higher than 200km/h, maximum code channel number was less than 16 in the time slot.Therefore, can find out that when preset speed interval was on predetermined speed, maximum code channel number was smaller or equal to 16 in the time slot corresponding.Need to prove, above only be an example shown in the table 1, in fact, the acquisition of N value can obtain according to simulating, verifying, also can obtain through the real system test, but also be not limited to this dual mode.
The above-mentioned corresponding example that has provided maximum code channel number in preset several speed intervals and the time slot.When the translational speed that detects UE falls into preset a certain speed interval, can obtain maximum code channel number in the time slot corresponding.
Based on above-mentioned preset content, Fig. 3 shows the flow chart of resource allocation methods one embodiment in the high speed downlink packet access, comprising:
S310: the translational speed of UE is calculated in the base station.
There is multiple mode can realize calculating the translational speed of UE, as calculating the translational speed of UE according to user's channel relevancy, the contents such as path loss metrical information of terminal to report.Below provide a kind of mode of calculating the UE translational speed according to the variable quantity of frequency deviation in the unit interval.
When UE was in mobile status, aerial signal can add Doppler frequency deviation, and base station transmit signals can produce certain Doppler frequency deviation owing to the translational speed of UE with the reception signal, thereby can calculate user's movement velocity according to this Doppler frequency deviation information.The concrete operation principle of this method is following:
Suppose that the base station transmit signals frequency is f
BS_TX=f
0, the Doppler frequency deviation that produces during the UE high-speed motion is Δ f, then the signal frequency that receives of terminal is f
UE_RX=f
0+ Δ f, UE is according to this receive frequency adjustment terminal local oscillator, and the terminal emission signal frequency also maintains f
UE_TX=f
0+ Δ f.
The terminal signaling that the base station receives is again through a Doppler frequency deviation, so the reception signal frequency of base station is f
NB_RX=f
0+ 2 Δ f
So the base station can be according to receiving Doppler frequency deviation measured value that signal and the difference on the frequency that transmits obtain shown in formula (1):
Δf＝(f
BS_RX-f
BS_TX)/2 (1)
Further, can access user's normal movement velocity according to Doppler frequency deviation, shown in formula (2):
v＝c×(Δf/f
0) (2)
Wherein, c is the light velocity 3 * 10
8M/s.Can find out, as Δ f=800Hz (being that frequency deviation is 800Hz), f
0During=2GHz, can obtain moving velocity of terminal and be about 430km/h.
Thus it is clear that, can calculate the UE translational speed by the variable quantity of frequency deviation in the unit interval.
S320: when portable terminal speed fell into preset speed interval, maximum code channel number in the time slot was confirmed according to predetermined corresponding relation in the base station.
For example, speed interval preset in the aforementioned base station is 100km/h～200km/h, if among the S310, the translational speed that calculates UE is 150km/h, and then the base station speed that can judge UE falls into preset speed and goes to see.And the corresponding maximum code channel number of speed interval that should be preset is 16, and therefore, the base station can confirm as that maximum code channel number is 16 in this UE distributed time slot.
Again for example, speed interval preset in the aforementioned base station is 200km/h～300km/h, if among the S310, the translational speed that calculates UE is 250km/h, and then the base station speed that can judge UE falls into preset speed and goes to see.And the corresponding maximum code inverse of speed interval that should be preset is 12, and therefore, the base station can confirm as that maximum code channel number is 12 in this UE distributed time slot.
Again for example, speed interval preset in the aforementioned base station is 300km/h～400km/h, if among the S310, the translational speed that calculates UE is 350km/h, and then the base station speed that can judge UE falls into preset speed and goes to see.And the corresponding maximum code inverse of speed interval that should be preset is 8, and therefore, the base station can confirm as that maximum code channel number is 8 in this UE distributed time slot.
Again for example, speed interval preset in the aforementioned base station is more than the 400km/h, if among the S310, the translational speed that calculates UE is 450km/h, and then the base station speed that can judge UE falls into preset speed and goes to see.And the corresponding maximum code inverse of speed interval that should be preset is 8, and therefore, the base station can confirm as that maximum code channel number is 8 in this UE distributed time slot.
In a word, can preset maximum code corresponding relation reciprocal in speed interval and the time slot of UE, when portable terminal speed fell into preset speed interval, maximum code channel number in the time slot can be confirmed according to predetermined corresponding relation in the base station.
And preset speed interval can comprise a plurality of intervals, and correspondingly, each in these preset a plurality of speed intervals can a corresponding maximum code channel number.
S330: the base station is that user terminal adopts following mode Resources allocation: distribute the maximum time slots that can be used for the transport service channel; Adopt sign indicating number branch mode to distribute code channel resource; The code channel number of setting each Time Slot Occupancy is no more than said maximum code channel number.
The base station is that UE distributes the maximum time slots that can be used for the transport service channel; With HSDPA is example, among the HS-DSCH data block has been adopted interleaving treatment, and the time slot that data block takies is many more; The gain that interweaves that can access is just big more, thereby helps improving data transmission performance.Therefore, in the present embodiment, the base station is that UE distributes the maximum time slots that can be used for transmitting HS-PDSCH.
The front is mentioned, and the available technology adopting time division way is distributed to the less time slot of UE, is in the scene of high-speed mobile at UE, can cause CQI to lose efficacy, and worsens the performance of transfer of data.And adopt sign indicating number to divide the code channel resource of mode to distribute in the present embodiment, can make the CQI value of feedback of calculating under the situation of UE high-speed mobile reflect the following data actual conditions constantly of sending more accurately.Therefore, proposing the base station in this step is that the mode that UE adopts sign indicating number to divide is distributed code channel resource.
Aforementioned mentioning preestablished maximum code channel number in a certain speed interval time slot corresponding, therefore, after obtaining the translational speed of UE, in this step, can learn maximum code channel number in the UE time slot corresponding.So base station sets UE is no more than said maximum code channel number at the code channel number of each Time Slot Occupancy in this step.
The translational speed that for example obtains UE is 150km/h, then can be learnt by above-mentioned predetermined corresponding relation, falls into the speed interval of 100km/h～200km/h, is 16 thereby can obtain corresponding maximum code channel number.Then can set UE and be no more than 16 at the code channel number of each Time Slot Occupancy.
S340: the base station utilizes the scheduling of resource user terminal of said distribution.
In this step, the base station utilizes the maximum time slots that are used for the transport service channel, the code channel resource of above-mentioned distribution, the code channel number of every Time Slot Occupancy that UE is dispatched.
In the HSDPA of TD-SCDMA, can dispatch through HS-SCCH, then said Traffic Channel is HS-PDSCH.
In addition, among the S330, the base station is the UE Resources allocation, can also be included as UE and take all code channels distribution maximum powers.
No matter to be in high-speed mobile still be the low speed mobile status at the terminal, how many code channels the code channel configuration be at most, if when all requiring the terminal to adopt the maximum code channel number of aforesaid way configuration, and the transmission of employing full power.
Below provide the reason of this method of salary distribution.At first explanation, power resource is the same with code channel resource, also belongs to a part of content of resource allocation.The front is mentioned, and the base station adopted sign indicating number branch mode to distribute code channel resource when UE was in the high-speed mobile scene, and for UE code channel number in every time slot is set to be no more than the corresponding maximum code channel number of this UE translational speed, promptly can not adopt full code channel resource configuration mode.Like this; According to original principle, promptly distribute how much power to depend on and distributed how many code channels, then to UE; Only under situation, be only maximum power transmission for all code channel resources of UE configuration; And all equal proportion downward modulations under other situation are under the situation of not all code channel of UE configuration, can not be maximum power transmission.And be under the scene of high-speed mobile at UE; Code channel resource is owing to the interference between code channel can not utilize fully, but power resource can all utilize, therefore; Here provide with UE low-speed motion scene in the different power resource distribution mode, can improve the level of resources utilization.In other words, in the present embodiment,, all the code channel that distributes is distributed full transmitting power no matter whether the code channel that distributes is whole code channels.Correspondingly, the power of each code channel can be had any different because of the difference of aforementioned preset maximum code channel number.Concrete, in the present embodiment power of each code channel can for maximum transmission power divided by preset maximum code channel number, rather than the power of each code channel is that total transmitting power is divided by 16 code channels in the prior art.
Then correspondingly, the base station utilizes the scheduling of resource user terminal of said distribution among the S340, and the resource of wherein distributing is included as the maximum power that all code channels that UE takies distribute.
As previously mentioned; After UE receives the schedule information of sending the base station; After going up the physical resource information that the HS-DSCH of indication uses like UE among the HSDPA of TD-SCDMA according to the HS-SCCH that receives, UE measures the channel quality on this physical resource, obtains CQI and gives the base station through this CQI of HS-SICH feedback.Afterwards, UE produces the corresponding CQI of channel quality and feeds back to the base station at each TTI.
In the present embodiment, the base station can also comprise after receiving the CQI of UE feedback:
S350: smoothing processing is done to the CQI that UE reports in the base station.
Smoothing processing is done to the CQI that UE reports in the base station, can reduce the fluctuation that SNR measures.
Below provide a kind of concrete mode of smoothing processing:
Suppose that current subframe numbers is n, then smoothing processing is:
CQI(n)＝(1-p)*CQI(n-1)+p*CQI(n)
Get different values according to p and can obtain different smoothing processing effects.If p=1 is not then for making smoothing processing.
The decline of channel comprises rapid fading and two kinds of decline patterns of slow fading, mixes, and the characteristics of rapid fading are that fading frequency is very fast, and along with the increase of speed, frequency is faster, and the correlation of front and back subframe is lower; The characteristics of slow fading are that decline is slow, belong to path loss, and Fig. 4 shows the sketch map of slow fading and rapid fading.Here, the purpose of smoothing processing is exactly the fast-changing influence of offsetting rapid fading.
Reduce the fluctuation that SNR measures, can reduce the influence of channel circumstance rapid fading, and mainly consider the slow fading factor the CQI feedback.This is because slow fading has certain correlation within a period of time, more accurate with reference to CQI when making follow-up scheduling.
Visible by the foregoing description, the corresponding relation of maximum code channel number in pre-set velocity interval and the time slot, the translational speed of user terminal is calculated in the base station; When portable terminal speed fell into preset speed interval, maximum code channel number in the time slot was confirmed according to preset corresponding relation in the base station; The base station is that user terminal adopts following mode Resources allocation: distribute the maximum time slots that can be used for the transport service channel; Adopt sign indicating number branch mode to distribute code channel resource; The code channel number of setting each Time Slot Occupancy is no more than said maximum code channel number; The base station utilizes the scheduling of resource user terminal of said distribution, like this, can adapt to the resource allocation demand under the scene that UE is in high-speed motion, thereby can guarantee the performance of data transmission procedure.
Below introduce the embodiment of the present invention one base station, Fig. 5 shows the block diagram of this base station embodiment, and like figure, this base station embodiment can comprise:
Speed calculation unit 51 is used to calculate the translational speed of user terminal;
Maximum code channel number is confirmed unit 52, when portable terminal speed falls into preset speed interval, is used for confirming the time slot maximum code channel number according to preset corresponding relation;
Resource allocation unit 53 is used to user terminal and adopts following mode Resources allocation: distribute the maximum time slots that can be used for the transport service channel; Adopt sign indicating number branch mode to distribute code channel resource; The code channel number of setting each Time Slot Occupancy is no more than said maximum code channel number;
Scheduling unit 54 is used to utilize the scheduling of resource user terminal of said distribution.
Said speed calculation unit 51 can calculate the translational speed of UE according to user's channel relevancy, the contents such as path loss metrical information of terminal to report, also can calculate the UE translational speed by the variable quantity of frequency deviation in the unit interval.The latter's concrete account form as previously mentioned.
Preferably, said base station can also comprise:
Corresponding relation is preset unit 50, is used for the corresponding relation of pre-set velocity interval and the maximum code channel number of time slot.
Preferably, the corresponding relation of maximum code channel number in said preset speed interval and the time slot can comprise:
When preset speed interval when predetermined speed is above, maximum code channel number is smaller or equal to 16 in the time slot corresponding.As when the speed of 100km/h is above, maximum code channel number is smaller or equal to 16 in the time slot corresponding.
Concrete, an example of preset corresponding relation can be shown in the table 1 of front.
Said resource allocation unit 53 can also be used to all code channels distribution maximum powers that user terminal takies.
Preferably, said base station can also comprise:
Smoothing processing unit 55 is used for smoothing processing is done in the channel quality indication of user terminal to send up.
Utilize the realization resource allocation methods of above-mentioned base station in high speed downlink packet inserts, embodiment is similar with preceding method, repeats no more at this.
For the convenience of describing, be divided into various unit with function when describing above the device and describe respectively.Certainly, when embodiment of the present invention, can in same or a plurality of softwares and/or hardware, realize the function of each unit.
Description through above execution mode can know, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product; This computer software product can be stored in the storage medium, like ROM/RAM, magnetic disc, CD etc., comprises that some instructions are with so that a computer equipment (can be a personal computer; Server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses all is the difference with other embodiment.Especially, for system embodiment, because it is basically similar in appearance to method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
The present invention can describe in the general context of the computer executable instructions of being carried out by computer, for example program module.Usually, program module comprises the routine carrying out particular task or realize particular abstract, program, object, assembly, data structure or the like.Also can in DCE, put into practice the present invention, in these DCEs, by through communication network connected teleprocessing equipment execute the task.In DCE, program module can be arranged in this locality and the remote computer storage medium that comprises memory device.
Though described the present invention through embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, hope that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (9)
1. the resource allocation methods during a high speed downlink packet inserts is characterized in that, the corresponding relation of maximum code channel number in pre-set velocity interval and the time slot, and comprise:
The translational speed of user terminal is calculated in the base station;
When portable terminal speed fell into preset speed interval, maximum code channel number in the time slot was confirmed according to preset corresponding relation in the base station;
The base station is that user terminal adopts following mode Resources allocation: distribute the maximum time slots that can be used for the transport service channel; Adopt sign indicating number branch mode to distribute code channel resource; The code channel number of setting each Time Slot Occupancy is no more than said maximum code channel number;
The base station utilizes the scheduling of resource user terminal of said distribution.
2. the method for claim 1 is characterized in that, maximum code channel number in the interval time slot corresponding of said pre-set velocity is realized by radio network controller or base station.
3. the method for claim 1 is characterized in that, the corresponding relation of maximum code channel number in said preset speed interval and the time slot comprises:
When preset speed interval was on predetermined speed, maximum code channel number was smaller or equal to 16 in the time slot corresponding.
4. the method for claim 1 is characterized in that, said base station is the mode of user terminal Resources allocation, can also comprise:
All code channels that take for user terminal distribute maximum power.
5. the method for claim 1 is characterized in that, said base station utilizes the scheduling of resource user terminal of said distribution also to comprise afterwards:
Smoothing processing is done to the channel quality indication of user terminal to send up in the base station.
6. a base station is characterized in that, comprising:
The speed calculation unit is used to calculate the translational speed of user terminal;
Corresponding relation is preset the unit, is used for the corresponding relation of pre-set velocity interval and the maximum code channel number of time slot;
Maximum code channel number is confirmed the unit, when portable terminal speed falls into preset speed interval, is used for confirming the time slot maximum code channel number according to preset corresponding relation;
Resource allocation unit is used to user terminal and adopts following mode Resources allocation: distribute the maximum time slots that can be used for the transport service channel; Adopt sign indicating number branch mode to distribute code channel resource; The code channel number of setting each Time Slot Occupancy is no more than said maximum code channel number;
Scheduling unit is used to utilize the scheduling of resource user terminal of said distribution.
7. base station as claimed in claim 6 is characterized in that, the corresponding relation of maximum code channel number in said preset speed interval and the time slot comprises:
When preset speed interval when predetermined speed is above, maximum code channel number is smaller or equal to 16 in the time slot corresponding.
8. base station as claimed in claim 6 is characterized in that, said resource allocation unit also is used to all code channels distribution maximum powers that user terminal takies.
9. base station as claimed in claim 6 is characterized in that, said base station also comprises:
The smoothing processing unit is used for smoothing processing is done in the channel quality indication of user terminal to send up.
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| CN114501486B (en) * | 2020-11-12 | 2023-08-15 | 中国移动通信集团浙江有限公司 | Cell parameter configuration method and device under high-speed mobile scene and computing equipment |
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