CN104717047B - Symbol cut-off method and device - Google Patents
Symbol cut-off method and device Download PDFInfo
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- CN104717047B CN104717047B CN201310688145.0A CN201310688145A CN104717047B CN 104717047 B CN104717047 B CN 104717047B CN 201310688145 A CN201310688145 A CN 201310688145A CN 104717047 B CN104717047 B CN 104717047B
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0226—Channel estimation using sounding signals sounding signals per se
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
- H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention proposes symbol cut-off method and device.Method includes：Baseband processing unit BBU periodically checks distribution of the business datum to be sent in time domain and frequency domain on each Physical Resource Block PRB；Total number of timeslots P with business datum to be sent in the entire time domain and frequency domain of the PRB is counted for each PRB, BBU；Q=┌ is calculated for each PRB, BBU（P/n）┐, wherein ┌ ┐ expressions round up, and n is the sub-carrier number on the frequency domain of the PRB；BBU selects q time-domain symbol on the PRB, and the business datum to be sent in the entire time domain of the PRB is adjusted in selected q time-domain symbol, closes the power amplifier PA of time-domain symbol non-selected on the PRB.The present invention improves the gain that shutdown time-domain symbol is brought.
Description
Technical field
The present invention relates to wireless technical field more particularly to symbol cut-off methods and device.
Background technology
LTE（Long Term Evolution, long term evolution）System introduces OFDM（Orthogonal Frequency
Division Multiplexing, orthogonal frequency division multiplexing）With multiple antennas MIMO（Multiple-Input Multiple-
Output, multiple-input, multiple-output）Etc. critical transmissions technology, spectrum efficiency and message transmission rate are significantly increased, to physical layer resources
From the point of view of, minimum distribution and thread are PRB（Physical Resource Block, Physical Resource Block）Rank, i.e. time domain
12 subcarriers on upper minimum 7 symbols, frequency domain, if Fig. 1 is LTE TDD（Time-division duplex, time division duplex）
A typical system-frame configuration example, wherein GP is protection interval, and DwPTS is descending pilot frequency time slot, and UpPTS is uplink
Pilot time slot.
Since the bandwidth of LTE system is larger, transmission power is higher, larger to the energy consumption of single carrier.In order to save
Energy consumption has begun in equipment to realize that symbol shutdown electricity-saving function specifically carries out symbol shutdown in the case where there：
For certain subframes, if within the scope of whole bandwidth, there is no business datum transmission in the subframe, includes only CRS
（Common reference signal, public reference signal）When equal common signals, then：In addition to the CRS in the subframe when
PA on domain（Power Amplifier, power amplifier）Work, remaining time close PA, and concrete operations are such as：Close the biasing of PA
The devices such as voltage or grid voltage.
It is arranged using the shutdown of subframe time rank in existing scheme, only when frequency all on a certain subframe time
On domain all without signal when just can close PA in corresponding time-domain symbol, therefore, only just will produce when load is extremely low
Significant gain, when load is more than 15%, almost without big gain.
Invention content
The present invention provides symbol cut-off method and device, to improve the gain that symbol shutdown generates.
The technical proposal of the invention is realized in this way：
A kind of symbol cut-off method, this method include：
Baseband processing unit BBU periodically check the business datum to be sent on each Physical Resource Block PRB in time domain and
Distribution on frequency domain；
It is total that time slot with business datum to be sent in the entire time domain and frequency domain of the PRB is counted for each PRB, BBU
Number P；
Q=┌ is calculated for each PRB, BBU（P/n）┐, wherein ┌ ┐ expressions round up, and n is on the frequency domain of the PRB
Sub-carrier number；BBU selects q time-domain symbol on the PRB, by the business datum tune to be sent in the entire time domain of the PRB
It is whole in selected q time-domain symbol, close the power amplifier PA of time-domain symbol non-selected on the PRB.
Further comprise before the distribution of the business datum to be sent in time domain and frequency domain checked on each PRB：
BBU judges whether the adjacent area interference that this current cell is subject to is less than default interference threshold, if so, being looked into described in executing
See the action of distribution of the business datum to be sent in time domain and frequency domain on each PRB.
The BBU selected on the PRB q time-domain symbol for：
BBU is according to the time-domain symbol information of the adjacent area BBU that each adjacent area BBU the is sent recently PRB closed, preferential selection
The time-domain symbol for the PRB that adjacent area BBU is closed.
The PA that the BBU closes time-domain symbol non-selected on the PRB further comprises later：
The time-domain symbol information of the PRB of closing is notified each adjacent area BBU of itself by BBU.
The BBU is located in orthogonal frequency division multiplex OFDM system.
A kind of symbol cutoff device, including：
Business datum is distributed enquiry module：Periodically check the business datum to be sent on each PRB in time domain and frequency domain
On distribution the total number of timeslots with business datum to be sent in the entire time domain and frequency domain of the PRB is counted for each PRB
P values are sent to symbol and turn off processing module by P；
Symbol turns off processing module：For each PRB, q=┌ is calculated（P/n）┐, wherein ┌ ┐ expressions round up, n
For the sub-carrier number on the frequency domain of the PRB；Q time-domain symbol is selected on the PRB, it will be pending in the entire time domain of the PRB
It send business datum to be adjusted in selected q time-domain symbol, closes the PA of time-domain symbol non-selected on the PRB.
The business datum distribution enquiry module checks the business datum to be sent on each PRB in time domain and frequency domain
It is further used for before distribution,
Judge whether the adjacent area interference that this current cell is subject to is less than default interference threshold, if so, being checked described in executing
The action of distribution of the business datum to be sent in time domain and frequency domain on each PRB.
Symbol shutdown processing module selected on the PRB q time-domain symbol for：
According to the time-domain symbol information for the PRB that the adjacent area that each adjacent area is sent recently is closed, each adjacent area is preferentially selected to close
The time-domain symbol of the PRB closed.
The PA that the symbol shutdown processing module closes time-domain symbol non-selected on the PRB is further used for later,
The time-domain symbol information of the PRB of closing is notified to the adjacent area of this cell.
Described device is located in BBU.
As it can be seen that the present invention when dispatching PRB resources can in the time domain it is vacant go out more resources, so as to close these sky
The PA of remaining resource improves gain to reduce energy consumption.
Description of the drawings
Fig. 1 is a typical system-frame configuration example of existing LTE TDD；
Fig. 2 is the symbol cut-off method flow chart in the system provided in an embodiment of the present invention based on OFDM；
Fig. 3 is the composition schematic diagram of symbol cutoff device provided in an embodiment of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further described in more detail.
Fig. 2 is the symbol cut-off method flow chart in the system provided in an embodiment of the present invention based on OFDM, such as Fig. 2 institutes
Show, is as follows：
Step 201：BBU in system（Base Band Unit, baseband processing unit）Periodically check on each PRB
Distribution of the business datum to be sent in time domain and frequency domain.
In this step, before BBU checks distribution of the business datum to be sent in time domain and frequency domain on each PRB,
It can first judge whether the adjacent area interference that this current cell is subject to is less than default interference threshold, if so, carrying out this implementation
The follow-up step of example；Otherwise, it is not for further processing, i.e., step follow-up without the present embodiment.
Step 202：Each PRB, BBU, which are counted, has business datum to be sent in the entire time domain and frequency domain of the PRB
Total number of timeslots P.
If the PRB in the time domain have m symbol, on frequency domain have n subcarrier, then the PRB entire time domain with
Total number of timeslots on frequency domain is m*n.
Step 203：Q=┌ is calculated for each PRB, BBU（P/n）┐.Wherein, ┌ ┐ expressions round up, and n is the PRB
Sub-carrier number on frequency domain, q are the time domain symbolic number for being adjusted to the business datum to be sent in entire time domain and frequency domain.
Step 204：BBU selects q time-domain symbol on the PRB, will be to be sent in the entire time domain and frequency domain of the PRB
Business datum is adjusted in selected q time-domain symbol.
Here, it when selecting q time-domain symbol, can arbitrarily select；Alternatively, in order to provide the transmission effect of whole network
Rate can will be closed after some or the PA of certain time-domain symbols for having turned itself off some or certain PRB between adjacent BBU
PRB marks and time domain symbol logo be sent to each adjacent area BBU, in this way, in this step, BBU when selecting q time-domain symbol,
First to inquire the PRB marks and time domain symbol logo that the adjacent area BBU that each adjacent area BBU is sent recently is closed, then preferential selection
The time-domain symbol for the PRB that adjacent area BBU has been switched off, so that the time-domain symbol used between adjacent area differs as possible.
Step 205：BBU closes the PA of time-domain symbol non-selected on the PRB.
Here, the prior art can be used in the mode for closing PA, such as：Close the devices such as bias voltage or the grid voltage of PA.
The application example of the present invention is given below：
If the business datum to be sent distribution on a PRB is as shown in table 1.Wherein, abscissa expression time domain, length 7,
Unit is symbol；Ordinate indicates frequency domain, and length 10, unit is subcarrier.As it can be seen that each grid represents on a symbol
One time slot.* number business datum to be sent is indicated.
Business datum to be sent distribution on 1 one PRB of table
As it can be seen from table 1 the PRB upper one, which is shared on 42 time slots, business datum to be sent.
Then calculate q=┌（42/10）┐=5, then on the PRB select 5 time-domain symbols, if selected symbol 0,1,2,3,
5, then this 42 business datum blocks to be sent are adjusted on symbol 0,1,2,3,5, after adjustment as shown in table 2.
After the program, scheduling mode is updated to：
| * | * | * | * | |||
| * | * | * | * | |||
| * | * | * | * | |||
| * | * | * | * | |||
| * | * | * | * | |||
| * | * | * | * | * | ||
| * | * | * | * | * | ||
| * | * | * | * |
| * | * | * | * | |||
| * | * | * | * |
The business datum to be sent distribution on PRB after applying the present invention of table 2
From table 2 it can be seen that after applying the present invention, it is vacant go out two symbols 4,6, then two symbols 4,6 are carried out
PA is turned off.
From embodiment illustrated in fig. 2 as can be seen that the invention has the advantages that：
When dispatching PRB resources can in the time domain it is vacant go out more resources, to close the PA of these vacant resources,
To reduce energy consumption, gain is improved.
Fig. 3 is the composition schematic diagram of symbol cutoff device provided in an embodiment of the present invention, as shown in figure 3, it includes mainly：
Business datum is distributed enquiry module 31 and symbol turns off processing module 32, wherein：
Business datum is distributed enquiry module 31：Periodically check the business datum to be sent on each PRB in time domain and frequency
It is total to count the time slot with business datum to be sent in the entire time domain and frequency domain of the PRB for each PRB for distribution on domain
P values are sent to symbol and turn off processing module 32 by number P.
Symbol turns off processing module 32：The P values for receiving each PRB that business datum distribution enquiry module 31 is sent, for every
A PRB calculates q=┌（P/n）┐, wherein ┌ ┐ expressions round up, and n is the sub-carrier number on the frequency domain of the PRB；At this
Q time-domain symbol is selected on PRB, and the business datum to be sent in the entire time domain and frequency domain of the PRB is adjusted to selected q
In a time-domain symbol, the PA of time-domain symbol non-selected on the PRB is closed.
Business datum distribution enquiry module 31 checks point of the business datum to be sent on each PRB in time domain and frequency domain
It is further used for before cloth, judges whether the adjacent area interference that this current cell is subject to is less than default interference threshold, if so, executes
The action of the distribution of the business datum to be sent in time domain and frequency domain checked on each PRB.
Symbol shutdown processing module 32 selected on the PRB q time-domain symbol for：The neighbour sent recently according to each adjacent area
The time-domain symbol information for the PRB that area closes preferentially selects the time-domain symbol of the PRB of each adjacent area closing.
Symbol shutdown processing module 32 is closed on the PRB to be further used for after the PA of non-selected time-domain symbol, will be closed
The time-domain symbol information of the PRB closed notifies the adjacent area of this cell.
Fig. 3 shown devices can be located in BBU, which can be located in ofdm system.
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
With within principle, any modification, equivalent substitution, improvement and etc. done should be included within the scope of protection of the invention god.
Claims (8)
1. a kind of symbol cut-off method, which is characterized in that this method includes：
Baseband processing unit BBU periodically checks the business datum to be sent on each Physical Resource Block PRB in time domain and frequency domain
On distribution；
Total number of timeslots P with business datum to be sent in the entire time domain and frequency domain of the PRB is counted for each PRB, BBU；
Q=┌ (P/n) ┐ is calculated for each PRB, BBU, wherein ┌ ┐ expressions round up, and n is on the frequency domain of the PRB
Sub-carrier number；BBU selects q time-domain symbol on the PRB, and the business datum to be sent in the entire time domain of the PRB is adjusted
Onto selected q time-domain symbol, the power amplifier PA of time-domain symbol non-selected on the PRB is closed；
The BBU selected on the PRB q time-domain symbol for：
BBU preferentially selects adjacent area according to the time-domain symbol information of the adjacent area BBU that each adjacent area BBU the is sent recently PRB closed
The time-domain symbol for the PRB that BBU is closed.
2. according to the method described in claim 1, it is characterized in that, the business datum to be sent checked on each PRB exists
Further comprise before distribution in time domain and frequency domain：
BBU judges whether the adjacent area interference that this current cell is subject to is less than default interference threshold, if so, being checked described in executing every
The action of distribution of the business datum to be sent in time domain and frequency domain on a PRB.
3. according to the method described in claim 1, it is characterized in that, the BBU closes time-domain symbol non-selected on the PRB
Further comprise after PA：
The time-domain symbol information of the PRB of closing is notified each adjacent area BBU of itself by BBU.
4. according to the method described in claim 1, it is characterized in that, the BBU is located in orthogonal frequency division multiplex OFDM system.
5. a kind of symbol cutoff device, which is characterized in that including：
Business datum is distributed enquiry module：Periodically check the business datum to be sent on each Physical Resource Block PRB in time domain
With the distribution on frequency domain, for each PRB, count in the entire time domain and frequency domain of the PRB with business datum to be sent when
P values are sent to symbol and turn off processing module by gap sum P；
Symbol turns off processing module：For each PRB, q=┌ (P/n) ┐ is calculated, wherein ┌ ┐ expressions round up, and n is should
Sub-carrier number on the frequency domain of PRB；Q time-domain symbol is selected on the PRB, by the industry to be sent in the entire time domain of the PRB
It is engaged on data point reuse to selected q time-domain symbol, closes the power amplifier PA of time-domain symbol non-selected on the PRB；
Symbol shutdown processing module selected on the PRB q time-domain symbol for：
According to the time-domain symbol information for the PRB that the adjacent area that each adjacent area is sent recently is closed, each adjacent area is preferentially selected to close
The time-domain symbol of the PRB.
6. device according to claim 5, which is characterized in that the business datum distribution enquiry module checks each PRB
On distribution of the business datum to be sent in time domain and frequency domain before be further used for,
Judge whether the adjacent area interference that this current cell is subject to is less than default interference threshold, if so, being checked described in executing each
The action of distribution of the business datum to be sent in time domain and frequency domain on PRB.
7. device according to claim 5, which is characterized in that the symbol shutdown processing module is closed unselected on the PRB
It is further used for after the PA for the time-domain symbol selected,
The time-domain symbol information of the PRB of closing is notified to the adjacent area of this cell.
8. device according to claim 5, which is characterized in that described device is located in baseband processing unit BBU.
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| CN201310688145.0A CN104717047B (en) | 2013-12-16 | 2013-12-16 | Symbol cut-off method and device |
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| CN201310688145.0A CN104717047B (en) | 2013-12-16 | 2013-12-16 | Symbol cut-off method and device |
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| CN104717047B true CN104717047B (en) | 2018-09-25 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106550436A (en) * | 2015-09-21 | 2017-03-29 | 大唐移动通信设备有限公司 | A kind of symbol shut-off collocation method and management equipment |
| CN113890573A (en) * | 2020-06-17 | 2022-01-04 | 中兴通讯股份有限公司 | Radio frequency unit power control method, electronic device and storage medium |
| CN114070696B (en) * | 2020-07-31 | 2023-03-10 | 上海华为技术有限公司 | Signal transmission method and related equipment thereof |
| CN112867113B (en) * | 2021-01-15 | 2022-05-20 | 深圳国人无线通信有限公司 | Energy-saving method and energy-saving system of communication base station |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009041871A1 (en) * | 2007-09-28 | 2009-04-02 | Telefonaktiebolaget Lm Ericsson (Publ) | A method and device for power reduction in an lte system |
| CN101699904A (en) * | 2009-10-27 | 2010-04-28 | 华为技术有限公司 | Method for saving energy and system thereof |
| CN102131211A (en) * | 2010-12-27 | 2011-07-20 | 大唐移动通信设备有限公司 | Method and device for shutting off downlink service time slot in TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system |
| CN102340854A (en) * | 2010-07-20 | 2012-02-01 | 电信科学技术研究院 | Mobile communication system base station energy-saving method and device |
| CN103313417A (en) * | 2012-03-16 | 2013-09-18 | 北京新岸线移动多媒体技术有限公司 | Resource scheduling method, device and system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7286606B2 (en) * | 2003-12-04 | 2007-10-23 | Intel Corporation | System and method for channelization recognition in a wideband communication system |
-
2013
- 2013-12-16 CN CN201310688145.0A patent/CN104717047B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009041871A1 (en) * | 2007-09-28 | 2009-04-02 | Telefonaktiebolaget Lm Ericsson (Publ) | A method and device for power reduction in an lte system |
| CN101699904A (en) * | 2009-10-27 | 2010-04-28 | 华为技术有限公司 | Method for saving energy and system thereof |
| CN102340854A (en) * | 2010-07-20 | 2012-02-01 | 电信科学技术研究院 | Mobile communication system base station energy-saving method and device |
| CN102131211A (en) * | 2010-12-27 | 2011-07-20 | 大唐移动通信设备有限公司 | Method and device for shutting off downlink service time slot in TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system |
| CN103313417A (en) * | 2012-03-16 | 2013-09-18 | 北京新岸线移动多媒体技术有限公司 | Resource scheduling method, device and system |
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