CN107483163A - A kind of common pilot dispatching method and device - Google Patents
A kind of common pilot dispatching method and device Download PDFInfo
- Publication number
- CN107483163A CN107483163A CN201610404281.6A CN201610404281A CN107483163A CN 107483163 A CN107483163 A CN 107483163A CN 201610404281 A CN201610404281 A CN 201610404281A CN 107483163 A CN107483163 A CN 107483163A
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- symbols
- port
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- symbol
- common pilot
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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
- H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
Abstract
This application provides a kind of common pilot dispatching method, this method includes：Base station is when configuring the common pilot of 2 symbols, and for port 0 and port 1, the character position for adding pilot cell is respectively on the 3rd symbol, the 10th symbol and the 14th symbol, and port 0 and port 1 are added the sub-carrier positions of pilot cell and differed；When sending data to terminal, it is scheduled according to the common pilot for 2 symbols being locally configured, the data that the base station for making terminal be received according to the 2 symbol common pilots demodulation being locally configured is sent, the common pilot of 2 symbols of the terminal configuration are identical with the common pilot for 2 symbols that the base station configures.Based on same inventive concept, the application also provides a kind of common pilot dispatching device, can reduce time delay of averagely eating dishes without rice or wine, and effectively reduces detection complexity of the terminal when carrying out data demodulation.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of common pilot dispatching method and device.
Background technology
With the universal commercialization of Long Term Evolution (LTE), explosive growth is also presented in wireless data service.Increase in data service
While long quick, more types of service are supported also to bring challenge to present LTE network.These challenges are increasingly becoming
The Main way of LTE network evolution.
Wherein, an important directions are exactly the shortening of time delay.For being wirelessly transferred, present LTE basic scheduling unit
(TTI) length is 1ms, and the average delay of a data transfer is in 10ms or so.According to newest ITU wanting for future network
Ask, one-way data service will meet 1ms mean transit delay.
In order to preferably lift Consumer's Experience, and meet e-learning quality needs as far as possible, LTE also will progressively support shorter
TTI, when 1ms (14 symbol) TTI is reduced into 2 symbols, the scheduling mode of common pilot is not provided in existing realization.
The content of the invention
In view of this, the application provides a kind of common pilot dispatching method and device, can reduce when averagely eating dishes without rice or wine
Prolong, and effectively reduce detection complexity of the terminal when carrying out data demodulation.
In order to solve the above technical problems, what the technical scheme of the application was realized in：
A kind of common pilot dispatching method, the common pilot applied to 2 symbols are dispatched, and this method includes：
When configuring the common pilot of 2 symbols, for port 0 and port 1, the character position for adding pilot cell divides for base station
Wei not be on the 3rd symbol, the 10th symbol and the 14th symbol, and the sub-carrier positions of pilot cell are added in port 0 and port 1
Differ；
When sending data to terminal, it is scheduled according to the common pilot for 2 symbols being locally configured, makes terminal according to this
The data that the base station that the 2 symbol common pilots demodulation of ground configuration receives is sent, the common pilot of 2 symbols of the terminal configuration
It is identical with the common pilot of 2 symbols of base station configuration.
A kind of common pilot dispatching device, applied to carry out 2 symbols common pilot scheduling base station on, the device bag
Include：Dispensing unit and transmitting element；
The dispensing unit, for when configuring the common pilot of 2 symbols, for port 0 and port 1, adding pilot tone list
The character position of member is respectively on the 3rd symbol, the 10th symbol and the 14th symbol, and pilot tone list is added in port 0 and port 1
The sub-carrier positions of member differ；
The transmitting element, for when sending data to terminal, 2 symbols that are locally configured according to the dispensing unit
Common pilot is scheduled, the data that the base station for making terminal be received according to the 2 symbol common pilots demodulation being locally configured is sent,
The common pilot of 2 symbols of the terminal configuration is identical with the common pilot for 2 symbols that the base station configures.
As can be seen from the above technical solution, in the application by the common pilot of 2 symbols configured on base station and terminal,
The common pilot of 2 symbols can be supported to dispatch.The realization of the program can reduce time delay of averagely eating dishes without rice or wine, and effectively reduce terminal and exist
Carry out detection complexity during data demodulation.
Brief description of the drawings
Fig. 1 is existing common pilot structural representation；
Fig. 2 is common pilot structural representation when basic scheduling unit is 2 symbols；
Fig. 3 is common pilot scheduling flow schematic diagram in the embodiment of the present application；
Fig. 4 is a kind of common pilot structural representation in the present embodiment；
Fig. 5 is the apparatus structure schematic diagram for being applied to above-mentioned technology in the embodiment of the present application.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and examples,
Technical scheme is described in detail.
Existing LTE protocol, the common pilot for supporting 2 ports (port 0 and port 1) to send.A LTE RB is by 144
Basic resource unit (RE) composition, 14 symbols of time domain, 12 symbols of frequency domain.
Referring to Fig. 1, Fig. 1 is existing common pilot structural representation.Wherein, the pilot cell of port 0 is distributed by horizontal line side
Frame represents that the pilot cell distribution of port 1 is represented by vertical line square frame.The existing schedule element time length of LTE is 1ms, in 1ms
There are 14 symbols.It can be seen that existing pilot tone time domain layout pitch is 3-4 symbol.
Referring to Fig. 2, Fig. 2 is common pilot structural representation when basic scheduling unit is 2 symbols.Basic in Fig. 2
Scheduling unit be changed into 2 symbols, no pilot tone is deposited in sTTI2, sTTI5 and sTTI7 in such 2 symbol pilot configuration
.
The embodiment of the present application makes to exist in the basic scheduling unit (sTTI) of each shortening by way of adding pilot tone
Pilot tone, so as to ensure demodulation performance.
With reference to specific embodiment, describe how the application carries out the configuration of common pilot in detail, and how to carry out
Data transfer.
When the application implements, the public of 2 symbols can be respectively configured on base station and terminal with the base station communication
It pilot tone, can also configure, be reinformed to the terminal communicated with base station.Exemplified by being hereafter respectively configured by base station and terminal,
In a word, reach and identical common pilot structure is stored in base station and the terminal that communicates with, when sending data to terminal in base station,
Terminal can be demodulated normally.
Referring to Fig. 3, Fig. 3 is common pilot scheduling flow schematic diagram in the embodiment of the present application.Concretely comprise the following steps：
Step 301, base station is when configuring the common pilot of 2 symbols, for port 0 and port 1, adds the symbol of pilot cell
Number position is respectively on the 3rd symbol, the 10th symbol and the 14th symbol, and the son of pilot cell is added in port 0 and port 1
Carrier position differs.
It is identical or different in the sub-carrier positions of distinct symbols addition pilot cell for port 0；
It is identical or different in the sub-carrier positions of distinct symbols addition pilot cell for port 1.
Due to for port 0 and port 1, add the character position of pilot cell the 3rd symbol, the 10th symbol and
On 14th symbol, the sub-carrier positions of pilot cell are added for a port can also be differed with identical, still,
The position for the subcarrier for adding pilot cell for port 0 and port 1 differs, that is, adds the position of the subcarrier of pilot cell
It is misaligned.
Port 0 is such as directed to, the character position for adding pilot cell is the 3rd symbol, and carrier position is the 2nd subcarrier, then
For port 1, when the character position for adding pilot cell is the 3rd symbol, carrier position cannot be the 2nd subcarrier, can be with
It is any subcarrier outside the 2nd subcarrier, such as subcarrier 3.
In the TTI using 2 symbol lengths, when adding pilot cell, more pilot cells can be added, can be certain
Ensure solution tonality in degree, but the expense that pilot tone is brought in itself will also decrease resource utilization.In view of existing pilot density
Very high, for the application in configuration pilot configuration, addition pilot tone, few addition pilot cell, specific as follows as far as possible：
For port 0, and port 1, the character position of pilot tone addition is when on a symbol, a corresponding subcarrier,
Port 0 is directed to, when adding pilot cell on a symbol, only adds a pilot cell, i.e., only on one sub-carrier
Add pilot cell.
Referring to Fig. 4, Fig. 4 is a kind of common pilot structural representation in the present embodiment.Given in Fig. 4 in a symbol
A kind of implementation of one pilot cell of upper addition, in specific implementation, it is not limited to which the pilot configuration provided in Fig. 4 is matched somebody with somebody
Put mode.
In Fig. 4, for port 0, respectively in the 9th symbol (symbol 3) of subcarrier (subcarrier 9) the 3rd, the 9th subcarrier
10 symbols, the symbol of the 6th subcarrier the 14th addition pilot cell.
For port 1, respectively in the symbol of the 6th subcarrier the 3rd, the symbol of the 6th subcarrier the 10th, the symbol of the 9th subcarrier the 14th
Add pilot cell.
Step 302, the base station is adjusted when sending data to terminal according to the common pilot for 2 symbols being locally configured
Degree, the data that the base station for making terminal be received according to the 2 symbol common pilots demodulation being locally configured is sent.
Base station is scheduled the data to be sent using the structure of the common pilot of 2 symbols of configuration, and terminal uses configuration
The structures of common pilot of 2 symbols be demodulated.
STTI2 after progress pilot tone addition, sTTI5, sTTI7 have pilot distribution.As can see addition pilot tone in Fig. 4
Position afterwards is the 3rd, 10 and 14 symbol.It is respectively that 2 ports add 1 pilot cell on per symbol.
The configuration of such pilot configuration, in sTTI2, sTTI5, sTTI7 pilot frequency character density are less than other sTTI；And
And single RB 2 symbol sTTI are demodulated, the pilot density is also than relatively low (only containing 1 pilot tone) in 2 symbols.Therefore, for such a
Configuration needs to consider multiple RB and multiple symbols joint demodulation, and multiple symbol joint demodulations refer to that current sTTI demodulation can make
With above pilot tone aids in being demodulated in sTTI.I.e. when dispatching common pilot, for a sTTI, 2 symbols are dispatched not every time
Less than preset value RB.
Here preset value can configure according to practical application, and such as 10,20 etc..
A kind of common pilot dispatching device is also proposed based on same inventive concept, in the application specific embodiment.Referring to
Fig. 5, Fig. 5 are the apparatus structure schematic diagram for being applied to above-mentioned technology in the embodiment of the present application.The device includes：Dispensing unit 501
With transmitting element 502；
Dispensing unit 501, for when configuring the common pilot of 2 symbols, for port 0 and port 1, adding pilot cell
Character position be respectively that and pilot cell is added in port 0 and port 1 on the 3rd symbol, the 10th symbol and the 14th symbol
Sub-carrier positions differ；
Transmitting element 502, for terminal send data when, the public affairs for 2 symbols being locally configured according to dispensing unit 501
It is scheduled with pilot tone, the data that the base station for making terminal be received according to the 2 symbol common pilots demodulation being locally configured is sent, institute
The common pilot for stating 2 symbols of terminal configuration is identical with the common pilot for 2 symbols that the base station configures.
It is preferred that
Dispensing unit 501, during common pilot for configuring 2 symbols, for port 0, pilot tone list is added in distinct symbols
The sub-carrier positions of member are identical or different；It is identical or not in the sub-carrier positions of distinct symbols addition pilot cell for port 1
Together.
It is preferred that
Dispensing unit 501, for configure 2 symbols common pilot when, for port 0, and port 1, in a symbol
One pilot cell of upper addition.
The character position of pilot tone addition is when on a symbol, a corresponding subcarrier.
It is preferred that
Transmitting element 502, for when dispatching common pilot, 2 symbols to be dispatched not less than default every time for a sTTI
Value RB.
The unit of above-described embodiment can be integrated in one, and can also be deployed separately；A unit is can be merged into, also may be used
To be further split into multiple subelements.
In summary, the common pilot of 2 symbols configured on base station and terminal, Neng Gouzhi are passed through in the embodiment of the present application
Hold the common pilot scheduling of 2 symbols.The realization of the program can reduce time delay of averagely eating dishes without rice or wine, and can reach 1ms or so, and effectively drop
Detection complexity of the low terminal when carrying out data demodulation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements done etc., should be included within the scope of protection of the invention with principle.
Claims (8)
1. a kind of common pilot dispatching method, it is characterised in that the common pilot applied to 2 symbols is dispatched, and this method includes：
When configuring the common pilot of 2 symbols, for port 0 and port 1, the character position for adding pilot cell is respectively for base station
On 3rd symbol, the 10th symbol and the 14th symbol, and the sub-carrier positions of pilot cell not phase is added in port 0 and port 1
Together；
When sending data to terminal, it is scheduled according to the common pilot for 2 symbols being locally configured, terminal is matched somebody with somebody according to local
The data that the base station that the 2 symbol common pilots demodulation put receives is sent, the common pilot of 2 symbols of the terminal configuration and institute
The common pilot for stating 2 symbols of base station configuration is identical.
2. according to the method for claim 1, it is characterised in that
It is identical or different in the sub-carrier positions of distinct symbols addition pilot cell for port 0；
It is identical or different in the sub-carrier positions of distinct symbols addition pilot cell for port 1.
3. according to the method for claim 1, it is characterised in that
For port 0, and port 1, a pilot cell is added on a symbol.
4. according to the method described in claim 1-3 any one, it is characterised in that
When dispatching common pilot, for a basic scheduling unit sTTI shortened, the scheduling of 2 symbols is not less than preset value every time
Individual resource block RB.
A kind of 5. common pilot dispatching device, it is characterised in that on the base station dispatched applied to the common pilot for carrying out 2 symbols,
The device includes：Dispensing unit and transmitting element；
The dispensing unit, for when configuring the common pilot of 2 symbols, for port 0 and port 1, adding pilot cell
Character position is respectively on the 3rd symbol, the 10th symbol and the 14th symbol, and pilot cell is added in port 0 and port 1
Sub-carrier positions differ；
The transmitting element, for when sending data to terminal, 2 symbols that are locally configured according to the dispensing unit it is public
Pilot tone is scheduled, the data that the base station for making terminal be received according to the 2 symbol common pilots demodulation being locally configured is sent, described
The common pilot of 2 symbols of terminal configuration is identical with the common pilot for 2 symbols that the base station configures.
6. device according to claim 5, it is characterised in that
The dispensing unit, during common pilot for configuring 2 symbols, for port 0, in distinct symbols addition pilot cell
Sub-carrier positions are identical or different；It is identical or different in the sub-carrier positions of distinct symbols addition pilot cell for port 1.
7. device according to claim 5, it is characterised in that
The dispensing unit, for configure 2 symbols common pilot when, for port 0, and port 1, add on a symbol
Add a pilot cell.
8. according to the device described in claim 5-7 any one, it is characterised in that
The transmitting element, for when dispatching common pilot, for basic scheduling unit sTTI 2 symbols every time of a shortening
Scheduling is not less than preset value resource block RB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610404281.6A CN107483163A (en) | 2016-06-08 | 2016-06-08 | A kind of common pilot dispatching method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610404281.6A CN107483163A (en) | 2016-06-08 | 2016-06-08 | A kind of common pilot dispatching method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107483163A true CN107483163A (en) | 2017-12-15 |
Family
ID=60593770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610404281.6A Pending CN107483163A (en) | 2016-06-08 | 2016-06-08 | A kind of common pilot dispatching method and device |
Country Status (1)
| Country | Link |
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| CN (1) | CN107483163A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101043297A (en) * | 2006-03-20 | 2007-09-26 | 华为技术有限公司 | Method and system for transmitting signal in multi-antenna communication |
| CN101540690A (en) * | 2008-03-21 | 2009-09-23 | 华为技术有限公司 | Method and system for MIMO communication of multicast service |
| CN102187630A (en) * | 2008-10-16 | 2011-09-14 | 交互数字专利控股公司 | Method and apparatus for wireless transmit/receive unit specific pilot signal transmission and wireless transmit/receive unit specific pilot signal power boosting |
-
2016
- 2016-06-08 CN CN201610404281.6A patent/CN107483163A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101043297A (en) * | 2006-03-20 | 2007-09-26 | 华为技术有限公司 | Method and system for transmitting signal in multi-antenna communication |
| CN101540690A (en) * | 2008-03-21 | 2009-09-23 | 华为技术有限公司 | Method and system for MIMO communication of multicast service |
| CN102187630A (en) * | 2008-10-16 | 2011-09-14 | 交互数字专利控股公司 | Method and apparatus for wireless transmit/receive unit specific pilot signal transmission and wireless transmit/receive unit specific pilot signal power boosting |
Non-Patent Citations (1)
| Title |
|---|
| HUAWEI, HISILICON: "Discussion on DL RS for short TTI", 《3GPP TSG RAN WG1 MEETING #84，R1-160293》 * |
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Application publication date: 20171215 |
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