CN105376039B - The transmission method and device of TDD system signal - Google Patents
The transmission method and device of TDD system signal Download PDFInfo
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- CN105376039B CN105376039B CN201410415236.1A CN201410415236A CN105376039B CN 105376039 B CN105376039 B CN 105376039B CN 201410415236 A CN201410415236 A CN 201410415236A CN 105376039 B CN105376039 B CN 105376039B
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- 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
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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Abstract
The present invention provides a kind of transmission method of TDD system signal and devices; it utilizes the subframe structure that reverse link is embedded into subframe end; therefore in the transmission process of TDD system signal; reduce unnecessary uplink and downlink link switching; and then reduce protection interval and periodically advanced operation, not only reduce power loss, also saves resource overhead; and the present invention will further save resource according to subsequent subframe type flexible configuration reverse link and protection interval.
Description
Technical field
The present invention relates to the subframe structures under time division duplex (TDD) operating mode, and in particular to TDD system signal
Transmission method and device, especially next generation communication system medium-high frequency carrier-wave transmission be directed to TDD optimization subframe structure.
Background technique
Although traditional the third generation wireless communication system defines two kinds of operating modes, frequency division duplex (FDD) and time-division are double
Work (TDD), but FDD operating mode is occupied an leading position, therefore subframe structure design is primarily directed to FDD operating mode.For
TDD operating mode, traditional subframe structure design have it is corresponding slow, the Loop Round Trip Time delay of HARQ process it is long and dependent on it is upper,
The defects of downlink subframe allocation ratio.
Traditional low-frequency range resource is very limited, with the explosive growth of data service, in recent years unlicensed frequency band and
Millimeter wave frequency band increasingly receives significant attention because frequency domain resource is abundant.In order to meet the various demands of future communications business,
Next generation communication system may have the feature that
Support flexible uplink and downlink capacity requirement and asymmetric property.
√ needs to consider for the distinctive optimization design of TDD to efficiently use uplink and downlink non-symmetrical spectrum；
Support low-response time (being lower than 1 millisecond)
√ considers shorter frame length；
√ considers scheduling and the HARQ process design of optimization；
It supports lower power loss, allows longer user's battery life；
A variety of communication links are supported, in addition to traditional uplink and downlink link, also self- of the support base station to base station
The D2D link of backhualing link and user to user
√ needs to consider to eat dishes without rice or wine to design independent of the general of Linktype, as maximized between different radio transmission link
Similitude etc.；
Comprehensively consider factors above, indeed it is contemplated that the 5th generation wireless communication system will be to be eated dishes without rice or wine to set for TDD optimization
Meter.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of transmission methods of TDD system signal
And device.
A kind of transmission method of the TDD system signal provided according to the present invention, in which:
In a downlink wireless subframe, access node sends a signal to equipment end on M1 descending time slot, at M2
The signal from equipment end is received on ascending time slot；It is inserted between the M1 descending time slot and M2 ascending time slot between a protection
Every (Guard Period, GP), M1, M2 are positive integer, and M1 is greater than M2, and M1 and M2's and in the downlink subframe sometimes
The number summation of gap；
In a wireless uplink subframe, equipment end sends a signal to access node on N1 ascending time slot, at N2
The signal from access node is received on descending time slot；A protection is inserted between the N2 descending time slot and N1 ascending time slot
Interval, N1, N2 are positive integer, and N1 is greater than N2, and the sum of N1 and N2 is the number summation of all time slots in the sub-frame of uplink.
The following are adoptable preferred technical characteristics:
The M2 ascending time slot is located at the end of the downlink subframe；
The N2 descending time slot is located at the beginning of the sub-frame of uplink；
In a downlink wireless subframe, the access node successively C1 special descending time slots, M1-C1 it is general under
After sending signal on row time slot, signal is not sent in the protection interval, then signal is received on M2 ascending time slot, C1 is
Positive integer and be less than M1；
Downlink Compliance control signal is sent on the C1 special descending time slots, the specific downgoing control signal of equipment end and
Downlink data signal is sent on M1-C1 general descending time slots, and uplink control signal and uplink reference signals (may also include
Part upstream data signals) it is sent on M2 ascending time slot.
The number M2 of ascending time slot is variable element, variable element M2 minimum zero in the downlink wireless subframe.
The specific value of the variable element M2 is semi-statically configured by high-level signaling.
Whether the variable element M2 is zero by implying configuration with the subsequent subframe being connected of the downlink subframe, if after
Continuous connected subframe is sub-frame of uplink, then M2 is zero.
If the variable element M2 is zero, the protection interval in the downlink subframe is also zero, institute in wireless sub-frame
Having time slot is descending time slot.
The duration of the protection interval is configurable, and the granularity of adjustment is symbol level.
In a wireless uplink subframe, the equipment end successively receives signal on N2 descending time slot, in the guarantor
Shield does not send signal on interval, then sends signal on N1 ascending time slot；
Downlink Compliance control signal is sent on the N2 descending time slot.
The downlink Compliance control signal sent on the N2 descending time slot includes to the upper of current sub-frame of uplink
Row scheduling authorization signaling, to have been received by downlink signal HARQ-ACK/NACK information, for channel measurement descending reference believe
Number, synchronization signal, system information.
The uplink control signal sent on the N1 ascending time slot is distributed in the edge of system bandwidth, upstream data letter
Number it is distributed in the middle part of system bandwidth.
The number N2 of descending time slot is variable element, variable element N2 minimum zero in the wireless uplink subframe.
The specific value of the variable element N2 is semi-statically configured by high-level signaling.
The variable element N2 whether be zero can by with before the sub-frame of uplink to the implicit configuration of the subframe being connected, such as
Before fruit to connected subframe be downlink subframe, then N2 is zero.
If the variable element N2 is zero, and with to the subframe end being connected be sub-frame of uplink before the sub-frame of uplink,
Then the protection interval in the sub-frame of uplink is also zero, and all time slots are ascending time slot in wireless sub-frame.
If the variable element N2 is zero, and with to the subframe end being connected be downlink subframe before the sub-frame of uplink,
Then the protection interval in the sub-frame of uplink moves on to the sub-frame of uplink front end, and all time slots are ascending time slot in subframe.
A kind of transmitting device of the TDD system signal provided according to the present invention, including access node, the access
Node is worked using the transmission method of above-mentioned TDD system signal.
A kind of transmitting device of the TDD system signal provided according to the present invention, including equipment end, the equipment end
It is worked using the transmission method of above-mentioned TDD system signal.
Compared with prior art, the present invention have it is following the utility model has the advantages that
(1) present invention utilizes a kind of subframe structures that reverse link is embedded into subframe end.Due to the present invention when
In the transmission process of division duplex system signal, embedded reverse link is placed on subframe end, is reduced unnecessary upper and lower
Line link switching not only reduces power loss, also saves resource to reduce protection interval and periodically advanced operation
Expense.
(2) present invention will further save money according to subsequent subframe type flexible configuration reverse link and protection interval
Source.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the downlink subframe structure of the TDD optimization utilized in transmission method provided by the invention；
Fig. 2 is the sub-frame of uplink that subsequent subframe is link in the same direction；
Fig. 3 is the sub-frame of uplink that subsequent subframe is reverse link.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
A kind of transmitting device of the TDD system signal provided according to the present invention, including access node and equipment end,
Wherein, the access node and equipment end use the transmission method for being equally a kind of TDD system signal provided by the invention
It works.
Specifically, it in the transmission method of the TDD system signal, adopts the following technical scheme that
In a downlink wireless subframe, access node sends a signal to equipment end on M1 descending time slot, at M2
The signal from equipment end is received on ascending time slot；The M2 ascending time slot is located at the end of the downlink subframe；The M1
Protection interval is inserted between a descending time slot and M2 ascending time slot, M1, M2 are positive integer, and M1 is greater than M2, and M1 and M2
With the number summation for all time slots in the downlink subframe；
In a wireless uplink subframe, equipment end sends a signal to access node on N1 ascending time slot, at N2
The signal from access node is received on descending time slot；The N2 descending time slot is located at the beginning of the sub-frame of uplink；It is described
A protection interval is inserted between N2 descending time slot and N1 ascending time slot, N1, N2 are positive integer, and N1 is greater than N2, and N1 and N2
Sum for all time slots in the sub-frame of uplink number summation.
In a downlink wireless subframe, the access node successively C1 special descending time slots, M1-C1 it is general under
After sending signal on row time slot, signal is not sent in the protection interval, then signal is received on M2 ascending time slot, C1 is
Positive integer and be less than M1；Downlink Compliance control signal is sent on the C1 special descending time slots, the specific downlink control of equipment end
Signal and downlink data signal processed are sent on M1-C1 general descending time slots, and uplink control signal and uplink reference signals (can
Can also include part upstream data signals) it is sent on M2 ascending time slot.
The number M2 of ascending time slot is variable element in the downlink wireless subframe, minimum the zero of variable element M2.Institute
The specific value for stating variable element M2 is semi-statically configured by high-level signaling.The variable element M2 whether be zero by with it is described
The implicit configuration of the subsequent connected subframe of downlink subframe, if subsequent connected subframe is sub-frame of uplink, M2 zero.If described can
Variable element M2 is zero, then the protection interval in the downlink subframe is also zero, and all time slots are descending time slot in wireless sub-frame.
The duration of the protection interval is configurable, and the granularity of adjustment is symbol level.
In a wireless uplink subframe, the equipment end successively receives signal on N2 descending time slot, in the guarantor
Shield does not send signal on interval, then sends signal on N1 ascending time slot；Downlink Compliance control signal is in the N2 downlink
It is sent on time slot.The downlink Compliance control signal sent on the N2 descending time slot includes to current sub-frame of uplink
Uplink scheduling authorization signaling, to have been received by downlink signal HARQ-ACK/NACK information, for channel measurement descending reference believe
Number, synchronization signal, system information.The uplink control signal sent on the N1 ascending time slot is distributed in the side of system bandwidth
Edge, upstream data signals are distributed in the middle part of system bandwidth.
The number N2 of descending time slot is variable element, variable element N2 minimum zero in the wireless uplink subframe.It is described
The specific value of variable element N2 is semi-statically configured by high-level signaling.The variable element N2 whether be zero can by with institute
It is configured before stating sub-frame of uplink to connected subframe is implicit, if forward direction is connected, subframe is downlink subframe, N2 zero.If described
Variable element N2 is zero, and with to the subframe end being connected be sub-frame of uplink before the sub-frame of uplink, then in the sub-frame of uplink
Protection interval be also zero, all time slots are ascending time slot in wireless sub-frame.If the variable element N2 is zero, and with institute
Stating before sub-frame of uplink to connected subframe end is downlink subframe, then the protection interval in the sub-frame of uplink moves on to the uplink
Subframe front end, all time slots are ascending time slot in subframe.
The transmitting device and method of TDD system signal provided by the invention are described above, it is next right
The transmitting device and method based on subframe structure be specifically described.
Present invention utilizes a kind of subframe structures for TDD operation mode optimization, i.e., in a forward link subframe
Embed a reverse link；The forward link can be traditional upstream or downstream link, be also possible to D2D or eNB-to-eNB
Self-backhauling link etc.；The reverse link and forward link are separated by way of the time-division, are generally disposed at son
Frame end, to reduce link switching number, to reduce power loss caused by switching；The reverse link may include number
Control domain is closed in domain, can also only include control domain, and preferable case lower includes control domain；
Wherein, there are two types of the reverse link configuration modes in forward link subframe: one is fixed configurations, i.e., each subframe
Centainly it is furnished with reverse link, subframe each in this way has a unified structure, the Loop Round Trip Time of HARQ process (Round Trip Time,
RTT) fixed, and independent of uplink and downlink link configuration ratio；Another kind is flexible configuration, i.e., the reverse strand in each subframe
Road configures on demand, and structure disunity between such subframe and subframe, the subframe of reverse link can not have more forward links
The configuration of resource, the reverse link can be indicated by following any mode:
A) it can be predefined mode to configure, i.e., network pre-defines specific sub-frame and configures reverse link；
B) it can be semi-statically configured by high-level signaling；
C) it may rely on the type implicit indication of subsequent subframe:
If the link of subsequent subframe and current subframe is on the contrary, the subframe can not configure reverse link；
If the link of subsequent subframe and current subframe is in the same direction, the sub-frame configuration reverse link；
Further, if from downlink handover to uplink, a protection interval is inserted into overcome downlink to pass
Propagation delay in defeated；For downlink subframe, if each sub-frame configuration uplink, downlink subframe structure is unified, all contains
There are a uplink and a GP switched from downstream-to-upstream.For sub-frame of uplink, which is flexibly configurable
: if subsequent subframe is sub-frame of uplink, which includes that a downlink and one cut from downstream-to-upstream
The GP changed；If subsequent subframe is downlink subframe, which includes a downlink, without GP, therefore under
Line link extends to subframe end, to further save resource.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (8)
1. a kind of transmission method of TDD system signal, it is characterised in that:
In a downlink wireless subframe, access node sends a signal to equipment end on M1 descending time slot, in M2 uplink
The signal from equipment end is received on time slot；A protection interval is inserted between the M1 descending time slot and M2 ascending time slot,
M1, M2 are positive integer, and M1 is greater than M2, and the sum of M1 and M2 is the number summation of all time slots in the downlink subframe；
In a wireless uplink subframe, equipment end sends a signal to access node on N1 ascending time slot, in N2 downlink
The signal from access node is received on time slot；It is inserted between the N2 descending time slot and N1 ascending time slot between a protection
Every N1, N2 are positive integer, and N1 is greater than N2, and the sum of N1 and N2 is the number summation of all time slots in the sub-frame of uplink；
In a downlink wireless subframe, the access node is successively in C1 special descending time slots, M1-C1 general downlinks
After sending signal in gap, signal is not sent in the protection interval, then signal is received on M2 ascending time slot, C1 is positive whole
It counts and is less than M1；
Downlink Compliance control signal is sent on the C1 special descending time slots, the specific downgoing control signal of equipment end and downlink
Data-signal is sent on M1-C1 general descending time slots, and uplink control signal and uplink reference signals are in M2 ascending time slot
Upper transmission；
The number M2 of ascending time slot is variable element, variable element M2 minimum zero in the downlink wireless subframe.
2. the transmission method of TDD system signal as described in claim 1, it is characterised in that:
The specific value of the variable element M2 is semi-statically configured by high-level signaling.
3. the transmission method of TDD system signal as described in claim 1, it is characterised in that:
Whether the variable element M2 is zero by implying configuration with the subsequent subframe being connected of the downlink subframe, if subsequent phase
Even subframe is sub-frame of uplink, then M2 is zero.
4. the transmission method of TDD system signal as described in claim 1, it is characterised in that:
If the variable element M2 is zero, the protection interval in the downlink subframe is also zero, and the interior institute of wireless sub-frame is sometimes
Gap is descending time slot.
5. the transmission method of TDD system signal as described in claim 1, it is characterised in that:
The duration of the protection interval is configurable, and the granularity of adjustment is symbol level.
6. the transmission method of TDD system signal as described in claim 1, it is characterised in that:
The M2 ascending time slot is located at the end of the downlink subframe；
The N2 descending time slot is located at the beginning of the sub-frame of uplink.
7. a kind of transmitting device of TDD system signal, including access node, which is characterized in that the access node uses
The transmission method of TDD system signal described in any one of claims 1 to 6 works.
8. a kind of transmitting device of TDD system signal, including equipment end, which is characterized in that the equipment end uses right
It is required that the transmission method of TDD system signal described in any one of 1 to 6 works.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811065300.2A CN109039571B (en) | 2014-08-21 | 2014-08-21 | Transmission method and device for time division duplex system signal |
| CN201811065297.4A CN108923906B (en) | 2014-08-21 | 2014-08-21 | Transmission method and device for time division duplex system signal |
| CN201410415236.1A CN105376039B (en) | 2014-08-21 | 2014-08-21 | The transmission method and device of TDD system signal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410415236.1A CN105376039B (en) | 2014-08-21 | 2014-08-21 | The transmission method and device of TDD system signal |
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| CN201811065300.2A Division CN109039571B (en) | 2014-08-21 | 2014-08-21 | Transmission method and device for time division duplex system signal |
| CN201811065297.4A Division CN108923906B (en) | 2014-08-21 | 2014-08-21 | Transmission method and device for time division duplex system signal |
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| CN105376039B true CN105376039B (en) | 2018-12-18 |
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| CN201811065297.4A Active CN108923906B (en) | 2014-08-21 | 2014-08-21 | Transmission method and device for time division duplex system signal |
| CN201410415236.1A Active CN105376039B (en) | 2014-08-21 | 2014-08-21 | The transmission method and device of TDD system signal |
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| CN201811065297.4A Active CN108923906B (en) | 2014-08-21 | 2014-08-21 | Transmission method and device for time division duplex system signal |
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| US11412410B2 (en) * | 2016-06-10 | 2022-08-09 | Ntt Docomo, Inc. | User terminal and radio communication method |
| CN109995500B (en) * | 2019-03-08 | 2021-10-29 | 北京集创北方科技股份有限公司 | Data transmission method and display control device |
| CN110995428B (en) * | 2019-12-13 | 2020-10-23 | 夏侯淑琴 | Electronic equipment using fusion access and corresponding access method |
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| CN101365187B (en) * | 2007-08-09 | 2011-08-10 | 华为技术有限公司 | Method, base station, and user terminal implementing uplink resource indication |
| CN101414902B (en) * | 2007-10-16 | 2010-05-12 | 大唐移动通信设备有限公司 | Transmission method and apparatus for long term evolution TDD system |
| CN101615947B (en) * | 2008-06-24 | 2016-10-05 | 华为技术有限公司 | Configuration ratio of uplink subframe to downlink subframe method and the method for data transmission, device |
| WO2010095874A2 (en) * | 2009-02-19 | 2010-08-26 | (주)엘지전자 | Method and apparatus for transmitting/receiving data in a relay communication system |
| CN101931456B (en) * | 2010-08-09 | 2016-05-25 | 中兴通讯股份有限公司 | The sending method of measuring reference signals in a kind of GSM |
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- 2014-08-21 CN CN201811065300.2A patent/CN109039571B/en active Active
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| CN101162981A (en) * | 2006-10-12 | 2008-04-16 | 中兴通讯股份有限公司 | Frame structure generating method of TDD communication system |
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| CN101159484A (en) * | 2007-10-28 | 2008-04-09 | 中兴通讯股份有限公司 | TDD system signal transmitting method and frame structure |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108923906A (en) | 2018-11-30 |
| CN109039571A (en) | 2018-12-18 |
| CN109039571B (en) | 2020-12-29 |
| CN108923906B (en) | 2021-01-26 |
| CN105376039A (en) | 2016-03-02 |
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