CN110535576A - A kind of pilot sending method and equipment of reverse link traffic channel - Google Patents
A kind of pilot sending method and equipment of reverse link traffic channel Download PDFInfo
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- CN110535576A CN110535576A CN201810506082.5A CN201810506082A CN110535576A CN 110535576 A CN110535576 A CN 110535576A CN 201810506082 A CN201810506082 A CN 201810506082A CN 110535576 A CN110535576 A CN 110535576A
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- Prior art keywords
- pilot
- pilot tone
- sequence
- reverse link
- subelement
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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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/04—Error control
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
This application discloses a kind of pilot sending methods of reverse link traffic channel, it include: to occur in the subframe to conflict in reverse link traffic channel with uplink control channel, if the uplink control channel occupies the resource of the reverse link traffic channel pilot tone, it is determined that the available frequency domain resource physical length N of pilot tone；In the subframe for occurring conflicting, pilot frequency sequence is generated according to the frequency domain resource physical length N, and send the pilot frequency sequence of generation.Using the application, system performance can be improved.
Description
Technical field
This application involves the transmission technology of up channel in communication system, in particular to a kind of pilot tone of reverse link traffic channel
Sending method and equipment.
Background technique
In smart grid data collection system, down direction transmits acquisition instructions, and up direction Transmission system acquires big
The various types data of amount, therefore, physical uplink transmission channel (PUSCH) need support big transmission (TB) block of uplink, and single
A TB block may map in multiple radio frames.In addition, uplink TB block can also carry out multiplicating transmission.Meanwhile in order to prop up
Physical Downlink Shared Channel (PDSCH) HARQ is held, needs to feed back the decoding of PDSCH by Physical Uplink Control Channel (PUCCH)
As a result.Based on this, single user/multi-user PUCCH and PUSCH simultaneous transmission can not only make full use of frequency domain resource, but also can subtract
The time delay of few PDSCH HARQ.But PUCCH transmission be likely to it is ongoing with same user or other users
PUSCH transmission generates conflict.Meanwhile PUCCH transmission may occupy the resource for transmitting PUSCH pilot tone originally, influence pilot tone
Length.When no PUCCH is sent, (according to wireless frame scheduling, the number of resource block is N to PUSCH pilot signal schematic diagramRB=2) such as
Shown in Fig. 1.The sub-carrier number of each resource block of 230 systems isEach PUSCH subframe in Fig. 1 includes a column pilot tone
Signal.The PUCCH format that current 230 system includes is as shown in table 1.
1 PUCCH format of table
| PUCCH format | Occupy PUCCH set of symbols number | Occupy SC-FDMA symbolic number |
| 0 | 1 | 4 |
| 1 | 7 | 27 (radio frames) |
| 2 | 14 | 54 (two radio frames) |
| 3 | 2 | 8 |
Other than occupying the PUCCH format of 4 symbols (i.e. 1 set of symbols), 2,7 and 14 set of symbols are occupied
PUCCH can occupy PUSCH pilot resources.By occupy 7 set of symbols PUCCH format for, Fig. 2 be PUSCH pilot tone and
The schematic diagram that PUCCH format 1 conflicts.
From fig. 2 it can be seen that first subband Central Plains is originally due to the presence for the PUCCH for occupying a radio frames
The frequency domain resource of PUSCH pilot tone is occupied by PUCCH, at this point, actual PUSCH pilot resources are long for subframe 2,3 and 4
Degree becomes 11.In current PUSCH pilot transmission, when PUCCH occupies the pilot frequency locations of PUSCH, by PUSCH pilot frequency sequence
It is truncated, with the real resource of PUSCH pilot tone in the case of matching conflict.It finds in practical applications, when PUCCH is occupied
When PUSCH pilot resources, truncation often reduces the performance of system.
Summary of the invention
The application provides a kind of pilot sending method of reverse link traffic channel, can rush in PUCCH and PUSCH pilot resources
System performance is improved when prominent.
To achieve the above object, the application adopts the following technical scheme that
A kind of pilot sending method of reverse link traffic channel, comprising:
Occur in the subframe to conflict in reverse link traffic channel with uplink control channel, if the uplink control channel occupies institute
State the resource of reverse link traffic channel pilot tone, it is determined that the frequency domain resource physical length N for allowing pilot tone to occupy；
In the subframe for occurring conflicting, pilot frequency sequence is generated according to the frequency domain resource physical length N, and send life
At the pilot frequency sequence.
Preferably, described include: according to frequency domain resource physical length N generation pilot frequency sequence
Determine the largest prime number for being less than the NGenerating length isPilot tone basic sequence, to the pilot tone motif
Column carry out cyclic shift and obtain the pilot frequency sequence that physical length is N.
Preferably, determining whether the uplink control channel occupies the mode packet of the resource of the reverse link traffic channel pilot tone
It includes:
When the uplink control channel PUCCH is not format 0, determine that the uplink control channel occupies the upper industry
The resource of business channel pilot frequency.
A kind of pilot tone sending device of reverse link traffic channel, including determination unit, generation unit and transmission unit；
The determination unit, for there is the subframe to conflict with uplink control channel in reverse link traffic channel, if described
Uplink control channel occupies the resource of the reverse link traffic channel pilot tone, it is determined that the frequency domain resource actual (tube) length for allowing pilot tone to occupy
Spend N；
The generation unit is generated for there is the subframe to conflict described according to the frequency domain resource physical length N
Pilot frequency sequence；
The transmission unit, for sending the pilot frequency sequence generated.
Preferably, the generation unit includes that motif column-generation subelement and pilot frequency sequence generate subelement；
The motif column-generation subelement, for determining the largest prime number for being less than the NGenerating length is's
Pilot tone basic sequence；
The pilot frequency sequence generates subelement, and the pilot tone basic sequence generated to the motif column-generation subelement recycles
Displacement obtains the pilot frequency sequence that physical length is N.
Preferably, the determination unit includes judgement subelement and determining subelement；
The judgement subelement works as institute for there is the subframe to conflict with uplink control channel in reverse link traffic channel
When to state uplink control channel PUCCH not be format 0, adjudicate the uplink control channel and occupy the reverse link traffic channel pilot tone
Resource, and notify the determining subelement；
The determining subelement, for determining the frequency for allowing pilot tone to occupy after the notice for receiving the judgement subelement
Domain resource physical length N.
As seen from the above technical solution, in the application, there is the son to conflict with uplink control channel in reverse link traffic channel
On frame, if uplink control channel occupies the resource of the reverse link traffic channel pilot tone, it is determined that the available frequency domain resource of pilot tone is real
Border length N；In the subframe for occurring conflicting, pilot frequency sequence is generated according to frequency domain resource physical length N, and send the pilot tone of generation
Sequence.By the above-mentioned means, being carried out when pilot frequency sequence is generated according to real resource length, so that it is complete for sending pilot frequency sequence
Sequence, rather than be truncated sequence, still retain pilot frequency sequence primary characteristic, so as to greatly promote system performance.
Detailed description of the invention
PUSCH pilot signal schematic diagram when Fig. 1 sends for no PUCCH；
Fig. 2 is schematic diagram when PUCCH format 1 occupies PUSCH pilot resources；
Fig. 3 is the basic procedure schematic diagram of pilot sending method in the application；
Fig. 4 is the flow diagram of reverse link traffic channel pilot sending method in the embodiment of the present application；
Fig. 5 is the schematic diagram of pilot signal when PUCCH occupies eight symbols；
Fig. 6 is the basic structure schematic diagram of pilot tone sending device in the application.
Specific embodiment
In order to which the purpose, technological means and advantage of the application is more clearly understood, the application is done below in conjunction with attached drawing
It is further described.
As stated in the background art, PUCCH transmission is likely to and same user or the ongoing PUSCH of other users
Transmission generates conflict, and in the radio frames of conflict, the subband that PUCCH is occupied cannot be used by any PUSCH, including
PUSCH pilot tone.When PUCCH occupies PUSCH pilot resources and PUSCH pilot length is caused to shorten, existing mode is will to give birth to
At PUSCH pilot frequency sequence be directly truncated, to adapt to the real resource size of PUSCH pilot tone.
However, PUSCH pilot frequency sequence is defined as the cyclic shift of Zadoff-Chu sequence, the perseverance of ZC sequence is mainly considered
After envelope trait, ideal period autocorrelation performance, good cross correlation, low peak average ratio characteristic and Fourier transformation still
It is the characteristics such as ZC sequence.The characteristic that probably will affect ZC sequence after the PUSCH pilot frequency sequence of generation is truncated, for example, just
Hand over characteristic and cubic metric (CM) characteristic.Since ZC sequence characteristic is affected, pilot frequency sequence no longer has original pilots
The superperformance of sequence, causes system performance to be affected.Based on the above analysis, become just because of PUSCH pilot resources
After short, current system is made performance unstable problem occur the truncation of pilot frequency sequence.Based on this, the application provides one
The new pilot sending method of kind, when PUCCH occupies PUSCH pilot resources and actual pilot resource is caused to tail off, according to reality
Pilot resources regenerate pilot frequency sequence, rather than former pilot frequency sequence is truncated, the pilot frequency sequence generated in this way still has
ZC sequence characteristic, so as to guarantee the stability of system performance.
Fig. 3 is the basic procedure schematic diagram of pilot sending method in the application.As shown in figure 3, this method comprises:
Step 301, occur in the subframe to conflict in reverse link traffic channel with uplink control channel, if uplink control channel accounts for
With the resource of reverse link traffic channel pilot tone, it is determined that the available frequency domain resource physical length N of pilot tone.
In the application, reverse link traffic channel, that is, PUSCH, uplink control channel, that is, PUCCH.In some subframe, if PUSCH
Conflict with PUCCH, and PUCCH occupies the pilot resources of PUSCH, then the pilot resources of PUSCH certainly will be caused to reduce, this
When, it is thus necessary to determine that go out the available frequency domain resource physical length N of pilot tone, that is, the frequency domain resource actual (tube) length for allowing pilot tone to occupy
Degree.
Wherein, when determining whether uplink control channel occupies the pilot resources of reverse link traffic channel, it is preferable that can sentence
Whether the format of disconnected PUCCH is format 0, if so, the pilot resources of the vacant PUSCH of PUCCH are determined, otherwise, it determines PUCCH
Occupy the pilot resources of PUSCH.
Step 302, in the subframe for occurring conflicting, pilot frequency sequence is generated according to frequency domain resource physical length N, and send life
At pilot frequency sequence.
After determining the available frequency domain resource physical length N of pilot tone, pilot frequency sequence is generated according to physical length N, i.e.,
The cyclic shift of ZC sequence, and send the pilot frequency sequence of the generation.The specific generating mode of pilot frequency sequence can use existing side
Formula, for example, determining the largest prime number for being less than NRegenerating length isZC sequence, the ZC sequence loops of generation are moved
It is N that length is arrived in position.
By the above-mentioned means, the pilot frequency sequence of appropriate length is generated according to actual pilot resource, no longer by the pilot tone of generation
Sequence truncation, but complete pilot frequency sequence is sent, guarantee that pilot frequency sequence has due characteristic, so that it is guaranteed that system performance is not
It is impacted.
So far, the basic procedure of reverse link traffic channel pilot sending method terminates in the application.It is specific below by one
Embodiment illustrates the specific implementation of the application.
Fig. 4 is the flow diagram of pilot sending method in the embodiment of the present application.As shown in figure 4, this method comprises:
Step 401, in any subframe, judge whether PUSCH and PUCCH conflicts, if so, 402 are thened follow the steps,
It is no to then follow the steps 405.
Step 402, judge whether PUCCH is format 0, if so, thening follow the steps 405, otherwise, execute step 403.
Step 403, the frequency domain resource physical length N that PUSCH pilot tone allows to occupy is determined.
It is assumed that PUCCH occupies M subband in PUSCH, then the practical frequency domain resource length occupied of PUSCH pilot tone is reduced It is the resource block size on frequency domain, the practical frequency domain resource length N occupied of PUSCH pilot tone is
Step 404, the largest prime number for being less than N is calculatedGenerating length isPilot tone basic sequence R, execute step
406。
Step 405, calculating is less thanLargest prime numberGenerating length isPilot tone basic sequence R, hold
Row step 406.
When the vacant PUSCH pilot resources of PUCCH, PUSCH pilot resources size is constant, remains asStill
Pilot tone basic sequence R is so generated using existing way.
Step 406, cyclic shift is carried out to pilot tone basic sequence R, obtains the pilot frequency sequence of matching actual frequency domain resource size.
So far, the pilot sending method in the present embodiment terminates.
A specific example is given below.It is assumed that PUCCH occupies 8 sign resources of PUSCH, Fig. 5 is three subbands
PUCCH occupies the pilot signal schematic diagram of 8 symbols under radio frames dispatch situation.Since the PUCCH of 8 symbols occupies uplink
Frame 1, therefore the actual pilot sequence length of subframe 1 is 11* (3-1), the pilot sequence length of subframe 2 and subframe 3 is not conflicted
Influence, remain as 11*3.For subframe 1, according to the application, the pilot frequency sequence that physical length is 22 is generated, i.e., first
The largest prime number less than 22 is acquired, the pilot tone basic sequence R that length is 19 is generated, cyclic shift then is carried out to basic sequence, is obtained
The actual pilot sequence that length is 22.
Above-mentioned is the specific implementation of pilot sending method in the application.Present invention also provides a kind of reverse link traffic channels
Pilot tone sending device, can be used for implementing the pilot sending method of above-mentioned the application.Fig. 6 is the basic knot of pilot tone sending device
Structure schematic diagram.As shown in fig. 6, the equipment includes determination unit, generation unit and transmission unit.
Wherein it is determined that unit, for there is the subframe to conflict with uplink control channel in reverse link traffic channel, if uplink
Control channel occupies the resource of the reverse link traffic channel pilot tone, it is determined that the frequency domain resource physical length N for allowing pilot tone to occupy.
Generation unit generates pilot frequency sequence according to the frequency domain resource physical length N for there is the subframe to conflict.It sends single
Member, for sending the pilot frequency sequence generated.
In above-mentioned pilot tone sending device, it is preferable that generation unit may further include motif column-generation subelement and
Pilot frequency sequence generates subelement.Wherein, motif column-generation subelement, for determining the largest prime number for being less than the NIt generates
Length isPilot tone basic sequence.Pilot frequency sequence generates subelement, the pilot tone base for generating to motif column-generation subelement
Sequence carries out cyclic shift and obtains the pilot frequency sequence that physical length is N.
Determination unit may further include judgement subelement and determine subelement.Wherein, subelement is adjudicated, is used for
Row Traffic Channel occurs in the subframe to conflict with uplink control channel, when uplink control channel PUCCH is not format 0, judgement
Uplink control channel occupies the resource of the reverse link traffic channel pilot tone, and notifies to determine subelement.It determines subelement, is used for
After the notice for receiving judgement subelement, the frequency domain resource physical length N for allowing pilot tone to occupy is determined.
Above-mentioned is the specific implementation of pilot sending method and equipment in the application.It can by the specific implementation of above-mentioned the application
See, compared with truncation original pilot sequence operation, the pilot sending method of the application can retain pilot frequency sequence primary characteristic (example
Such as CM/PAPR characteristic), improve system performance.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (6)
1. a kind of pilot sending method of reverse link traffic channel characterized by comprising
Occur in the subframe to conflict in reverse link traffic channel with uplink control channel, if the uplink control channel occupies on described
The resource of industry business channel pilot frequency, it is determined that the frequency domain resource physical length N for allowing pilot tone to occupy；
In the subframe for occurring conflicting, pilot frequency sequence is generated according to the frequency domain resource physical length N, and send generation
The pilot frequency sequence.
2. the method according to claim 1, wherein described lead according to frequency domain resource physical length N generation
Frequency sequence includes:
Determine the largest prime number for being less than the NGenerating length isPilot tone basic sequence, to the pilot tone basic sequence carry out
Cyclic shift obtains the pilot frequency sequence that physical length is N.
3. method according to claim 1 or 2, which is characterized in that it is described to determine whether the uplink control channel occupies
The mode of the resource of reverse link traffic channel pilot tone includes:
When the uplink control channel PUCCH is not format 0, determine that the uplink control channel occupies the uplink service letter
The resource of road pilot tone.
4. a kind of pilot tone sending device of reverse link traffic channel, which is characterized in that the equipment include determination unit, generation unit and
Transmission unit；
The determination unit, for there is the subframe to conflict with uplink control channel in reverse link traffic channel, if the uplink
Control channel occupies the resource of the reverse link traffic channel pilot tone, it is determined that the frequency domain resource physical length N for allowing pilot tone to occupy；
The generation unit generates pilot tone according to the frequency domain resource physical length N for there is the subframe to conflict described
Sequence；
The transmission unit, for sending the pilot frequency sequence generated.
5. equipment according to claim 4, which is characterized in that the generation unit includes motif column-generation subelement and leads
Frequency sequence generates subelement；
The motif column-generation subelement, for determining the largest prime number for being less than the NGenerating length isPilot tone base
Sequence；
The pilot frequency sequence generates subelement, and the pilot tone basic sequence for generating to the motif column-generation subelement recycles
Displacement obtains the pilot frequency sequence that physical length is N.
6. equipment according to claim 4 or 5, which is characterized in that the determination unit includes judgement subelement and determination
Subelement；
The judgement subelement, for there is the subframe to conflict with uplink control channel in reverse link traffic channel, on described
When row control channel PUCCH is not format 0, the money that the uplink control channel occupies the reverse link traffic channel pilot tone is adjudicated
Source, and notify the determining subelement；
The determining subelement, for determining that the frequency domain for allowing pilot tone to occupy provides after the notice for receiving the judgement subelement
Source physical length N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810506082.5A CN110535576B (en) | 2018-05-24 | 2018-05-24 | Pilot frequency sending method and device for uplink service channel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810506082.5A CN110535576B (en) | 2018-05-24 | 2018-05-24 | Pilot frequency sending method and device for uplink service channel |
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| CN110535576A true CN110535576A (en) | 2019-12-03 |
| CN110535576B CN110535576B (en) | 2021-11-05 |
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| CN107040349A (en) * | 2016-02-03 | 2017-08-11 | 电信科学技术研究院 | A kind of method and device for being dynamically determined pilot tone pattern |
-
2018
- 2018-05-24 CN CN201810506082.5A patent/CN110535576B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150181624A1 (en) * | 2012-06-27 | 2015-06-25 | Lg Electronics Inc. | Method and terminal for random access to small cell |
| CN103874203A (en) * | 2012-12-11 | 2014-06-18 | 普天信息技术研究院有限公司 | Uplink-channel distribution method for communication system |
| CN104995977A (en) * | 2013-05-09 | 2015-10-21 | 富士通株式会社 | Transmission method, reception method, and device for uplink control channel of radio communication system |
| CN107040349A (en) * | 2016-02-03 | 2017-08-11 | 电信科学技术研究院 | A kind of method and device for being dynamically determined pilot tone pattern |
Non-Patent Citations (1)
| Title |
|---|
| TEXAS INSTRUMENTS: "R1-120462 "Physical layer aspects of multiple timing advance commands"", 《3GPP TSG RAN WG1 #68 R1-120462》 * |
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