CN106817205A - Data in special physical data channel dispatching method and device - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0073—Allocation arrangements that take into account other cell interferences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The invention provides a kind of data in special physical data channel dispatching method and device, belong to the communications field.Data in special physical data channel dispatching method includes：Step 1：Acquisition needs to demodulate the TFCI of user；Step 2：Each data frame in TTI selects corresponding time delay, and wherein time delay Tn corresponding moment issue demodulation tasks；Step 3：After the demodulating data of all data frames in having collected TTI, enter row decoding；Step 4：Decoding result is obtained, if decoding is correct, judges that scheduling interference is eliminated；If decoding error, dispatch list to be demodulated is put into；Step 5：If dispatch list non-NULL to be demodulated, remaining demodulation resource is checked, if remaining demodulation resource is sufficient, turn to step 6；Step 6：The restitution delay of each data frame in TTI is checked, 2 are gone to step when at least a frame data restitution delay meets pre-conditioned.Technical scheme can as much as possible reduce processing delay while interference cancellation gain is ensured.
Description
Technical field
The present invention relates to the communications field, a kind of data in special physical data channel dispatching method and dress are particularly related to
Put.
Background technology
The solution of up DPDCH (Dedicated Physical Data Channel, Dedicated Physical Data Channel)
Tune is demodulated immediately after the information for solving control channel, and function is eliminated when interference is introduced in system, on
In order to enjoy the gain that interference is eliminated to the full, fixation uses EDPDCH for the demodulation of row DPDCH
(Enhanced Dedicated Physical Data Channel strengthen Dedicated Physical Data Channel) channel is done
Disturb elimination and terminate rear data demodulation, one frame data of demodulation are issued every time, relative to without introducing Interference Cancellation work(
The time delay more than a frame is increased during energy, causes whole loopback delay to increase, influence ping bags and some speed
The impression of rate user.
The content of the invention
The technical problem to be solved in the present invention be to provide a kind of data in special physical data channel dispatching method and
Device, can as much as possible reduce processing delay while interference cancellation gain is ensured.
In order to solve the above technical problems, embodiments of the invention offer technical scheme is as follows：
On the one hand, there is provided a kind of DPDCH data dispatching methods, including：
Step 1：Acquisition needs to demodulate the transport format combination identifiers TFCI of user；
Step 2：Each data frame in Transmission Time Interval TTI selects corresponding time delay, and wherein
One time delay Tn corresponding moment issues demodulation tasks, wherein n=1,2,3 ..., the time delay of different frame
It is separate；
Step 3：After the demodulating data of all data frames in having collected TTI, enter row decoding；
Step 4：Decoding result is obtained, if decoding is correct, judges that scheduling interference is eliminated；If decoding is wrong
By mistake, it is put into dispatch list to be demodulated；
Step 5：If dispatch list non-NULL to be demodulated, remaining demodulation resource is checked, if remaining solution is raised wages
Source is sufficient, turns to step 6；
Step 6：The restitution delay of each data frame in TTI is checked, in an at least frame data restitution delay
2 are gone to step when meeting pre-conditioned.
Further, the time delay Tn in the step 2 is selected from the following moment：
Get the T1 moment of TFCI information；
High Speed Uplink Packet access HSUPA 10msTTI users once demodulate the T2 that Interference Cancellation terminates
Moment；
Other DPDCH channel disturbances offset the T3 moment for terminating；
The T4 moment that HSUPA 10msTTI user's secondary demodulation Interference Cancellations terminate；
HSUPA 2ms users solve the T5 moment that Interference Cancellation terminates again.
Further, the moment Tn=Ti+ data frame frame length for demodulating for the first time, i=1,2,3,4,5.
Further, the moment Tn of demodulation is Ti+ data frames frame length, antenna data storage length for the first time
Minimum value in degree, i=1,2,3,4,5.
Further, when antenna data memory length is less than TTI length, reserve a length for subframe and make
It is process time, all data frames of TFCI has been demodulated in demodulation TTI, and to the data after demodulation
Stored.
Further, the step 3 also includes：
Demodulating data is cached, and the demodulating data of the TTI complete to enters row decoding.
Further, the step 3 includes：
When a kind of TTI is only existed, if antenna data memory length is more than preset value, to owning in TTI
Data frame is decoded after being demodulated；Or
When there is two or more TTI, the newest demodulating data to each data frame in TTI enters row decoding；
Or
When there is two or more TTI, after the corresponding data frame codings of less TTI are correct, at other
The demodulating data of the less TTI corresponding data frames is used when TTI is decoded；Or
When there is two or more TTI, before each TTI terminates, to all data included in TTI
Frame is demodulated.
Further, the step 6 includes：
Whether the restitution delay of each data frame in TTI is judged more than antenna data memory length, if demodulation
Time delay is more than antenna data memory length, then do not demodulated next time.
Further, the step 6 also includes：
When TTI is more than 10ms, only the second frame data are demodulated next time.
The embodiment of the present invention additionally provides a kind of DPDCH data scheduling devices, including：
Acquisition module, for obtaining the transport format combination identifiers TFCI for needing to demodulate user；
Time delay selecting module, for each data frame selection in Transmission Time Interval TTI it is corresponding when
Prolong, and wherein time delay Tn corresponding moment issue demodulation tasks, wherein n=1,2,3 ...,
The time delay of different frame is separate；
Demodulation module, is demodulated for all data frames in TTI.
Decoding module, for after the demodulating data of all data frames in having collected TTI, entering row decoding；
Interference cancellation module, for when decoding correct, eliminating scheduling interference；
Antenna data memory module, in decoding error, by demodulating data storage in dispatch queue to be demodulated
In table；
Demodulation resource update module, in dispatch list non-NULL to be demodulated, checking remaining demodulation resource；
Demodulating data frame selecting module, the restitution delay for checking each data frame in TTI, judges whether
Meet pre-conditioned in the presence of an at least frame data restitution delay.
Embodiments of the invention have the advantages that：
In such scheme, it is considered in the case of Interference Cancellation opening, change the demodulation dispatching strategy of DPDCH,
While can guarantee that interference cancellation gain, processing delay is reduced as much as possible.
Brief description of the drawings
Fig. 1 is the flow chart of embodiment of the present invention data in special physical data channel dispatching method；
Fig. 2 is the structured flowchart of embodiment of the present invention data in special physical data channel dispatching device；
Fig. 3 is that the embodiment of the present invention is configured and specific dispatching party under demodulation resource sufficiency in two kinds of TTI
Method schematic diagram；
Fig. 4 is that the embodiment of the present invention is configured and specific dispatching party under demodulation resource confined condition in two kinds of TTI
Method schematic diagram；
Fig. 5 is specific dispatching method schematic diagram of the embodiment of the present invention under two kinds of TTI configurations.
Specific embodiment
For the technical problem, technical scheme and the advantage that to be solved embodiments of the invention are clearer, below
To be described in detail in conjunction with the drawings and the specific embodiments.
Embodiments of the invention provide a kind of data in special physical data channel dispatching method and device, Neng Gou
While ensureing interference cancellation gain, processing delay is reduced as much as possible.
Embodiment one
The present embodiment provides a kind of DPDCH data dispatching methods, as shown in figure 1, the present embodiment includes：
Step 1：Acquisition needs to demodulate the transport format combination identifiers TFCI of user；
Step 2：To each number in TTI (Transmission Time Interval, Transmission Time Interval)
Select corresponding time delay according to frame, and wherein time delay Tn corresponding moment issue demodulation tasks, wherein
N=1,2,3 ..., the time delay of different frame is separate；
Step 3：After the demodulating data of all data frames in having collected TTI, enter row decoding；
Step 4：Decoding result is obtained, if decoding is correct, judges that scheduling interference is eliminated；If decoding is wrong
By mistake, it is put into dispatch list to be demodulated；
Step 5：If dispatch list non-NULL to be demodulated, remaining demodulation resource is checked, if remaining solution is raised wages
Source is sufficient, turns to step 6；
Step 6：The restitution delay of each data frame in TTI is checked, in an at least frame data restitution delay
2 are gone to step when meeting pre-conditioned.
The technical scheme consideration of the present embodiment changes the solution key of DPDCH in the case of Interference Cancellation opening
Degree strategy, while can guarantee that interference cancellation gain, reduces processing delay as much as possible.
Further, the time delay Tn in the step 2 is selected from the following moment：
Get TFCI (Transport Format Combination Indicator, transformat combination mark
Symbol) information the T1 moment；
HSUPA (high speed uplink packet access, High Speed Uplink Packet access)
10msTTI user once demodulates the T2 moment that Interference Cancellation terminates；
Other DPDCH channel disturbances offset the T3 moment for terminating；
The T4 moment that HSUPA 10msTTI user's secondary demodulation Interference Cancellations terminate；
HSUPA 2ms users solve the T5 moment that Interference Cancellation terminates again.
The selection principle of demodulation time on deck, can obtain interference cancellation gain for demodulation information needed,
According to present interference cancellation systems, have chosen above time point is demodulated, and above time point can be according to dry
The difference for disturbing counteracting scheduling is increased or decreased, simultaneously for same user, the use feelings according to resource
Condition, the user type in current system etc., traversal above time point are demodulated, or choose wherein one
Point is demodulated between timesharing.
Further, the moment Tn=Ti+ data frame frame length for demodulating for the first time, i=1,2,3,4,5.
TTI configurations according to DPDCH, the time of selection demodulation for the first time, on the border of minimum TTI,
Therefore the time chosen can be (Tn=Ti+ data frames frame length).
Further, the selection of time of demodulation is also limited to the memory length of antenna data for the first time, for the first time
The moment Tn of demodulation is the minimum value in Ti+ data frames frame length, antenna data memory length,
I=1,2,3,4,5.
Further, when antenna data memory length is less than TTI length, reserve a length for subframe and make
It is process time, all data frames of TFCI has been demodulated in demodulation TTI, and to the data after demodulation
Stored.
Further, the step 3 also includes：
Demodulating data is cached, each frame stores the data of newest demodulation, secondary demodulation data cover one
Secondary demodulating data, can be a demodulating data of the first frame during decoding, and the second frame a demodulating data,
One data of complete TTI of composition, feeding decoder enters row decoding.
Further, the step 3 includes：
When a kind of TTI is only existed, if antenna data memory length is more than preset value, to owning in TTI
Data frame is decoded after being demodulated；Or
When there is two or more TTI, the newest demodulating data to each data frame in TTI enters row decoding；
Or
When there is two or more TTI, after the corresponding data frame codings of less TTI are correct, at other
The demodulating data of the less TTI corresponding data frames is used when TTI is decoded；Or
When there is two or more TTI, before each TTI terminates, to all data included in TTI
Frame is demodulated.
To sum up, in specific embodiment, a kind of situation of TTI is being configured, is being judged after result is decoded out
Whether need to be demodulated again, in the case where antenna data length is enough, every time all frames in TTI
It is demodulated；When being configured with various TTI, each TTI decodings result out, is required for judging
Whether it is demodulated again, decoding uses the newest demodulating data of each frame in TTI；It is various for being configured with
The situation of TTI, it is resource-constrained, for including data frame after small TTI decodings correctly, do not carry out again
Demodulation, uses directly to TTI long decodings；When being configured with various TTI, resource is unrestricted,
Before each TTI terminates, all data frames to being included in TTI are demodulated.
Further, the step 6 includes：
Whether the restitution delay of each data frame in TTI is judged more than antenna data memory length, if demodulation
Time delay is more than antenna data memory length, then do not demodulated next time, is otherwise normally carried out demodulating next time.
Further, the step 6 also includes：
When TTI is more than 10ms, due to restitution delay difference, the interference for being received disappears the multiframe in TTI
The gain for removing is also different, and the gain that the first frame is subject to is larger, if in the case where resource is insufficient, can be only
Second frame is demodulated next time.
Embodiment two
A kind of DPDCH data scheduling devices are present embodiments provided, as shown in Fig. 2 the present embodiment includes：
Acquisition module, for obtaining the transport format combination identifiers TFCI for needing to demodulate user；
Time delay selecting module, for each data frame selection in Transmission Time Interval TTI it is corresponding when
Prolong, and wherein time delay Tn corresponding moment issue demodulation tasks, wherein n=1,2,3 ...,
The time delay of different frame is separate；
Demodulation module, is demodulated for all data frames in TTI.
Decoding module, for after the demodulating data of all data frames in having collected TTI, entering row decoding；
Interference cancellation module, for when decoding correct, eliminating scheduling interference；
Antenna data memory module, in decoding error, by demodulating data storage in dispatch queue to be demodulated
In table；
Demodulation resource update module, in dispatch list non-NULL to be demodulated, checking remaining demodulation resource；
Demodulating data frame selecting module, the restitution delay for checking each data frame in TTI, judges whether
Meet pre-conditioned in the presence of an at least frame data restitution delay.
The technical scheme of the present embodiment, it is considered in the case of Interference Cancellation opening, change the demodulation of DPDCH
Scheduling strategy, while can guarantee that interference cancellation gain, reduces processing delay as much as possible.
Embodiment three
Present embodiments provide a kind of configuration two kinds of DPDCH of TTI, two kinds of TTI and be respectively 10msTTI,
The DPDCH of 20msTTI, when demodulation resource is sufficient, specific dispatching method such as Fig. 3 institutes of the present embodiment
Show：
For 10msTTI, demodulation terminate after directly decoding, the decoding error always of frame 0, until at 5
Between put and all carried out demodulation coding；If wherein once decoding correct, follow-up demodulation is not carried out and is translated
Code, frame as shown in Figure 32,3,4,5.
For 20msTTI, frame n, n+1 constitute a complete TTI；
The decoding time of the TTI of the composition of frame 0,1 is as follows：
First time decoding time：When frame 1 issues demodulation completion, the demodulating data with the last time of frame 0
Send into decoder together, that is, frame 1 a demodulation result, and frame 0 the 4th demodulation demodulation together
Feeding decoder enters row decoding.
Second decoding time：2nd demodulation of the 4th demodulation frame 1 of frame 0；
Third time decoding time：2nd demodulation of the 5th demodulation frame 1 of frame 0；
4th decoding time：3rd demodulation of the 5th demodulation frame 1 of frame 0；
5th decoding time：The 4th demodulation of the 5th demodulation frame 1 of frame 0；
6th decoding time：The 5th demodulation of the 5th demodulation frame 1 of frame 0；
As long as above time point once decodes correct, follow-up decoding need not be carried out.
In demodulation resource by limited time, as shown in figure 4, choosing a portion time is demodulated scheduling.
Such as frame 0 only in T1, T3, T5 is demodulated, and other frames also can be according to decoding situation and demodulation
Resource, carries out selectively scheduling demodulation.
Example IV
Present embodiments provide one kind and store 4 frame antenna datas, configure two kinds of DPDCH of TTI, two
Plant TTI and be respectively 20msTTI, 40msTTI, as shown in figure 5, the specific dispatching method bag of the present embodiment
Include following steps:
Step 1：Terminate to obtain the TFCI of 20msTTI in frame 1, as shown in figure 5, issuing the solution of frame 0,1
Adjust, wherein the time delay of frame 0 is (T1+ data frame frame lengths>=T4), the time delay of frame 1 is T1；
Step 2：2 demodulation are carried out to frame 1 at the T2 moment, this time delay of time frame 0 is T2+ data frame frames
It is long, due to T4<(T2+ data frames frame length)<Interval demodulation is no benefited herein for T5, therefore does not carry out frame
The secondary demodulation result of frame 1, is sent into decoder for decoding by 0 demodulation with a demodulation result of frame 0；
Step 3：2 demodulation are carried out to frame 1 at the T3 moment, this time delay of time frame 0 is T3+ data frame frames
It is long, due to T5=<(T3+ data frames frame length), therefore demodulated frames 0 and frame 1 simultaneously, and decode；
Step 4：Get the TFCI of frame 2,3, that is, 40msTTI end, issue the solution of frame 2,3
Adjust；
Step 5：Second demodulation result of frame 0, three demodulation results of frame 1 and the first time of frame 2,3
Demodulation result feeding decoder enters row decoding；
Step 6：40msTTI decoding errors, because the delay of this time frame 0 has been over antenna data
Memory length, therefore, frame 1 dispatches three demodulation, frame 2, the scheduling secondary demodulation of frame 3, frame 0
Secondary demodulation result, three demodulation of frame 1, three demodulation feeding decoders of frame 2,3 enter row decoding, translate
Code is correct, finishing scheduling.
This many functional part described in this description is all referred to as module, specifically to emphasize it
The independence of implementation.
In the embodiment of the present invention, module can be realized with software, so as to by various types of computing devices.
For example, an executable code module for mark can include one or more physics of computer instruction
Or logical block, for example, it can be built as object, process or function.Even so, being marked
The executable code for knowing module need not be physically located together, and can be including storing in difference physically
Different instructions, when being combined together in these command logics, it constitutes module and realizes the module
Regulation purpose.
In fact, executable code module can be individual instructions or the instruction of many bars, and even may be used
To be distributed on multiple different code segments, it is distributed in the middle of distinct program, and is set across multiple memories
Back-up cloth.Similarly, peration data can be identified in module, and can be according to any appropriate shape
Formula is realized and is organized in the data structure of any appropriate type.The peration data can be as single
Data set is collected, or can be distributed on diverse location (be included in different storage device), and
Only can be present in system or network as electronic signal at least in part.
When module can be realized using software, it is contemplated that the level of existing hardware technique, it is possible to soft
The module that part is realized, in the case where cost is not considered, those skilled in the art can build corresponding hard
Part circuit realizes corresponding function, and the hardware circuit includes conventional ultra-large integrated (VLSI) electricity
The existing semiconductor of road or gate array and such as logic chip, transistor etc or other are discrete
Element.Module can also use programmable hardware device, such as field programmable gate array, programmable array to patrol
Volume, programmable logic device etc. realizes.
In each method embodiment of the present invention, the sequence number of each step can not be used to limit the elder generation of each step
Afterwards sequentially, for those of ordinary skill in the art, on the premise of not paying creative work, to each
The priority change of step is also within protection scope of the present invention.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of Dedicated Physical Data Channel DPDCH data dispatching methods, it is characterised in that including：
Step 1：Acquisition needs to demodulate the transport format combination identifiers TFCI of user；
Step 2：Each data frame in Transmission Time Interval TTI selects corresponding time delay, and wherein
One time delay Tn corresponding moment issues demodulation tasks, wherein n=1,2,3 ..., the time delay of different frame
It is separate；
Step 3：After the demodulating data of all data frames in having collected TTI, enter row decoding；
Step 4：Decoding result is obtained, if decoding is correct, judges that scheduling interference is eliminated；If decoding is wrong
By mistake, it is put into dispatch list to be demodulated；
Step 5：If dispatch list non-NULL to be demodulated, remaining demodulation resource is checked, if remaining solution is raised wages
Source is sufficient, turns to step 6；
Step 6：The restitution delay of each data frame in TTI is checked, in an at least frame data restitution delay
2 are gone to step when meeting pre-conditioned.
2. DPDCH data dispatching methods according to claim 1, it is characterised in that the step
Time delay Tn in rapid 2 is selected from the following moment：
Get the T1 moment of TFCI information；
High Speed Uplink Packet access HSUPA 10msTTI users once demodulate the T2 that Interference Cancellation terminates
Moment；
Other DPDCH channel disturbances offset the T3 moment for terminating；
The T4 moment that HSUPA 10msTTI user's secondary demodulation Interference Cancellations terminate；
HSUPA 2ms users solve the T5 moment that Interference Cancellation terminates again.
3. DPDCH data dispatching methods according to claim 2, it is characterised in that for the first time
The moment Tn=Ti+ data frame frame length of demodulation, i=1,2,3,4,5.
4. DPDCH data dispatching methods according to claim 2, it is characterised in that for the first time
The moment Tn of demodulation is the minimum value in Ti+ data frames frame length, antenna data memory length,
I=1,2,3,4,5.
5. DPDCH data dispatching methods according to claim 4, it is characterised in that work as antenna
When data storage length is less than TTI length, a length for subframe is reserved as process time, demodulate TTI
In demodulated all data frames of TFCI, and the data after demodulation are stored.
6. DPDCH data dispatching methods according to claim 1, it is characterised in that the step
Rapid 3 also include：
Demodulating data is cached, and the demodulating data of the TTI complete to enters row decoding.
7. DPDCH data dispatching methods according to claim 1, it is characterised in that the step
Rapid 3 include：
When a kind of TTI is only existed, if antenna data memory length is more than preset value, to owning in TTI
Data frame is decoded after being demodulated；Or
When there is two or more TTI, the newest demodulating data to each data frame in TTI enters row decoding；
Or
When there is two or more TTI, after the corresponding data frame codings of less TTI are correct, at other
The demodulating data of the less TTI corresponding data frames is used when TTI is decoded；Or
When there is two or more TTI, before each TTI terminates, to all data included in TTI
Frame is demodulated.
8. DPDCH data dispatching methods according to claim 1, it is characterised in that the step
Rapid 6 include：
Whether the restitution delay of each data frame in TTI is judged more than antenna data memory length, if demodulation
Time delay is more than antenna data memory length, then do not demodulated next time.
9. DPDCH data dispatching methods according to claim 1, it is characterised in that the step
Rapid 6 also include：
When TTI is more than 10ms, only the second frame data are demodulated next time.
10. a kind of Dedicated Physical Data Channel DPDCH data scheduling devices, it is characterised in that including：
Acquisition module, for obtaining the transport format combination identifiers TFCI for needing to demodulate user；
Time delay selecting module, for each data frame selection in Transmission Time Interval TTI it is corresponding when
Prolong, and wherein time delay Tn corresponding moment issue demodulation tasks, wherein n=1,2,3 ...,
The time delay of different frame is separate；
Demodulation module, is demodulated for all data frames in TTI.
Decoding module, for after the demodulating data of all data frames in having collected TTI, entering row decoding；
Interference cancellation module, for when decoding correct, eliminating scheduling interference；
Antenna data memory module, in decoding error, by demodulating data storage in dispatch queue to be demodulated
In table；
Demodulation resource update module, in dispatch list non-NULL to be demodulated, checking remaining demodulation resource；
Demodulating data frame selecting module, the restitution delay for checking each data frame in TTI, judges whether
Meet pre-conditioned in the presence of an at least frame data restitution delay.
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| CN201510846405.1A CN106817205B (en) | 2015-11-27 | 2015-11-27 | Data scheduling method and device for special physical data channel |
| PCT/CN2016/098216 WO2017088551A1 (en) | 2015-11-27 | 2016-09-06 | Data scheduling method and apparatus for dedicated physical data channel |
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| CN106817205B (en) | 2020-09-15 |
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