CN108347775A - A kind of method for transmitting signals in communication system - Google Patents
A kind of method for transmitting signals in communication system Download PDFInfo
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- CN108347775A CN108347775A CN201710060703.7A CN201710060703A CN108347775A CN 108347775 A CN108347775 A CN 108347775A CN 201710060703 A CN201710060703 A CN 201710060703A CN 108347775 A CN108347775 A CN 108347775A
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- common control
- control channel
- time slot
- transmission direction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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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
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/0008—Wavelet-division
-
- 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
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0092—Indication of how the channel is divided
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
-
- 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
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
This application discloses the method for transmitting signals in a kind of communication system, including：Receiving common control channels information, and according to the downstream transmission direction for indicating to determine the corresponding M time slot of the common control channel of common control channel；Signal transmission is carried out according to determining downstream transmission direction；Wherein, in the time domain in addition to assigned timeslot, using first time slot position in every M continuous slot as common control channel, for the M continuous slot as the corresponding M time slot of the common control channel, M is positive integer.Using the application, propagation delay time can be reduced.
Description
Technical field
This application involves the communication technology, more particularly to the method for transmitting signals in a kind of communication system.
Background technology
With the sustainable development of mobile Internet and Internet of Things, the 5th generation (5G) technology is also according to ever-increasing demand pair
The development of itself proposes corresponding requirement, in 5G technologies, is divided to mobile communication scene according to existing demand,
The scenes such as including eMBB, mMTC and URLLC, research direction is mainly mobile broadband, magnanimity machine communication and the superelevation enhanced can
It is communicated by low time delay.
In LTE communication system, several semi-static uplink and downlinks proportionings of time division duplex (TDD) pattern definition are quiet by half
The method of state configuration realizes the transmission of uplink and downlink business.Nevertheless, the mode being semi-statically configured can not adapt to happen suddenly completely
The variability of business, in the eIMTA scenes (enhancement uplink and downlink interference management and traffic adaptation) of lte-a system, in order to meet
The demand that real time business flexibly changes uses the mode that seven kinds of candidate uplink and downlink proportioning dynamics change, as shown in Figure 1.And
In 5G communication systems, the index request of the flexibility of traffic scheduling, scheduling delay and user's average throughput is more harsh, original
The demand that cannot be satisfied 5G systems in terms of time delay, handling capacity and the flexible row of scheduling by the way of changing uplink and downlink proportioning,
Therefore in order to meet the index request of 5G communication systems, 3GPP tissues, which determine, uses more flexible dual-mode, logical to reduce
Believe time delay, improves the handling capacity of system.
In the last RAN1 meetings, further determines and dynamic uplink and downlink switching side at least is used to data service
The flexible dual-mode of formula, and how to switch over and need to be further discussed.
Invention content
The application provides the method for transmitting signals in a kind of communication system, can reduce propagation delay time.
To achieve the above object, the application uses technical solution as above：
A kind of method for transmitting signals in communication system, including：
Receiving common control channels information, and determine that the common control channel corresponds to according to the instruction of common control channel
M time slot downstream transmission direction；
Signal transmission is carried out according to determining downstream transmission direction；
Wherein, in the time domain in addition to assigned timeslot, using first time slot position in every M continuous slot as public control
Channel processed, for the M continuous slot as the corresponding M time slot of the common control channel, M is positive integer.
Preferably, this method further comprises：It is configured according to high-level signaling, determines currently used dual-mode；When true
When fixed dual-mode is the dynamic dual-mode, executes the receiving common control channels and determine the downstream transmission
The processing in direction；
Wherein, the dual-mode is semi-static duplex or dynamic dual-mode；
Preferably, the common control channel is scrambled by the RNTI in current transmission direction.
Preferably, when the M time slot includes fixed descending time slot, the fixed descending time slot is skipped.
Preferably, if current system is FDD system, the downstream transmission of common control channel instruction
Direction is the downstream transmission direction of the M time slot of current downlink carrier or up-link carrier.
Preferably, the common control channel is located at first character position of first time slot, subcarrier in frequency domain
Interval configuration uses the subcarrier spacing configuration identical with synchronizing signal within the scope of current system bandwidth, and the public control
The frequency domain position of channel immobilizes.
Preferably, the common control channel includes 2*M bit, each two successive bits are used to indicate time slot
Downstream transmission direction mode.
Preferably, determine the M according to the broadcast of high-level signaling, and/or, according to be semi-statically configured determine and update described in
M。
Preferably, the assigned timeslot is the fixed time slot for being used for transmission synchronizing signal and MIB signals.
It as seen from the above technical solution,, will be in every M continuous slot in the time domain in addition to assigned timeslot in the application
First time slot position is determined as common control channel, receiving common control channels according to the instruction of common control channel
The downstream transmission direction of continuous N time slot carries out signal transmission according to the downstream transmission direction determined.By at this
Reason, is capable of the uplink and downlink ratio of flexible configuration time slot, adapts to the diversified demand of 5G, reduces propagation delay time.
Description of the drawings
Fig. 1 is the instance graph that uplink and downlink switches in eIMTA scenes；
Fig. 2 is the basic procedure schematic diagram of method for transmitting signals in the application；
The schematic diagram of uplink and downlink timeslot transmission direction when Fig. 3 is M=2 in the application.
Specific implementation mode
In order to make the purpose, technological means and advantage of the application be more clearly understood, the application is done below in conjunction with attached drawing
It is further described.
In this application, most basic method for transmitting signals includes：
Receiving common control channels, and when determining that common control channel is M corresponding according to the instruction of common control channel
The downstream transmission direction of gap；Signal transmission is carried out according to determining downstream transmission direction.Wherein, when removing specified in the time domain
Outside gap, using first time slot position in every M continuous slot as common control channel, M continuous slot is as public control
The corresponding M time slot of channel processed, M is positive integer.
In above-mentioned transmission method, the downstream transmission direction of M time slot is determined according to the instruction of common control channel, to
Make downstream transmission direction that can greatly strengthen the flexibility of uplink-downlink configuration with dynamic change.Furthermore, it is contemplated that different demands
And backward compatibility, it is preferable that can be configured previously according to high-level signaling, determine current system using semi-static dual-mode still
Dynamic dual-mode determines uplink and downlink when determining using dynamic dual-mode according still further to the mode of above-mentioned common signal channel instruction
Otherwise transmission direction determines downstream transmission direction according to existing semi-static mode.Illustrate this below by specific embodiment
The specific implementation of application.
Fig. 2 is the flow diagram of method for transmitting signals in the embodiment of the present application.As shown in Fig. 2, this method includes：
Step 201, high-level signaling configuration is received, determines the dual-mode that current system uses.
Wherein, dual-mode can be semi-static dual-mode or dynamic dual-mode, and semi-static dual-mode is half quiet
The dual-mode that state mode configures, downstream transmission direction are semi-statically configured, and existing way may be used.The duplexing mould of dynamic
Formula is the dual-mode that the application proposes.
When the dual-mode determined is dynamic dual-mode, step 202 is executed.
Step 202, receiving common control channels information determines common control channel pair according to the instruction of common control channel
The downstream transmission direction for the M time slot answered.
Specifically, in the time domain, it removes assigned timeslot and (such as fixed is used for transmission the necessary letter such as synchronizing signal, MIB signals
The time slot of breath) outside, per M continuous slot, in first time slot position, common control channel is placed, which is used to indicate it
The downstream transmission direction of the M continuous slot at place.Wherein it is preferred to if M time slot includes fixed descending time slot,
The time slot is skipped, several time slots after M time slot are filled into, such common control channel instruction is still M time slot
Downstream transmission direction；The RNTI that current transmission direction may be used in common control channel is scrambled.
At specific determining downstream transmission direction, if current system is TDD system, common control channel directly refers to
What is shown is the downstream transmission direction of current M time slot；
If current system is FDD system, M time slot of common control channel instruction current downlink carrier can be selected
Downstream transmission direction；Alternatively, can also select the common control channel indicate current up-link carrier M time slot up and down
Row transmission direction, specific choice mode can be configured by high-level signaling or be determined by other means (such as first passes through association in advance
View setting).
The time-domain position of common control channel can be located at first sign bit of first time slot in M continuous slot
It sets, the configuration of subcarrier in frequency domain interval uses the subcarrier spacing configuration identical with synchronizing signal within the scope of current system bandwidth,
And the frequency domain position of common control channel immobilizes, and can be preset, such as pass through protocol.
At specifically instruction downstream transmission direction, the information in downstream transmission direction is used to indicate in common control channel
Can include 2*M bit, wherein each two successive bits are used to indicate the downstream transmission direction of a time slot, refer specifically to
The mode of showing can be as shown in table 1：
Table 1
The value of M is positive integer, and specific method of determination can be broadcasted by high-level signaling, alternatively, can also carry out
The value of semi-static adjustment, M is 1~N, and N is preset positive integer.Fig. 3 is subcarrier spacing when being 60kHz, when M is 2 on
The schematic diagram of downlink transmission direction.
From the foregoing, it can be seen that the common control channel transmission information bit for being used for transmission downstream transmission directional information is as follows：
Slot transmission direction instruction domain：
Transmission direction instructions field 1, transmission direction instructions field 2 ..., transmission direction domain M.
Filling bit：Filling 0 makes common control channel length and defined length be aligned.
Here, since common control channel has its defined channel length, when transmitting downstream transmission directional information, if
2*M bit cannot reach defined length, then increase filling bit behind slot transmission direction instruction domain, make entire public control
Channel length processed is identical as specific length.
Step 203, signal transmission is carried out according to determining downstream transmission direction.
So far, the method for transmitting signals in the application terminates.
By the method for transmitting signals of above-mentioned the application, uplink-downlink configuration is carried out using dynamical fashion, to greatly improve
The flexibility of uplink-downlink configuration.In NR communication systems, URLLC scene user plane time delays require to be 0.5ms, therefore using dynamic
Morphotype formula can be by reducing time domain scheduling time (Frame alignment time) to reduce propagation delay time；In addition certain
Under scene, such as the fewer Microcell of user is covered, the variation of uplink and downlink portfolio is bigger, can be into one using dynamic dispatching
Step increases the average throughput of user, improves the utilization rate of frequency spectrum.
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 (9)
1. the method for transmitting signals in a kind of communication system, which is characterized in that including：
Receiving common control channels information, and the corresponding M of the common control channel is determined according to the instruction of common control channel
The downstream transmission direction of a time slot；
Signal transmission is carried out according to determining downstream transmission direction；
Wherein, in the time domain in addition to assigned timeslot, using first time slot position in every M continuous slot as common control channel
Road, for the M continuous slot as the corresponding M time slot of the common control channel, M is positive integer.
2. according to the method described in claim 1, it is characterized in that, this method further comprises：It is configured according to high-level signaling, really
Fixed currently used dual-mode；When determining dual-mode is the dynamic dual-mode, the public control of reception is executed
Channel processed and the processing for determining the downstream transmission direction；
Wherein, the dual-mode is semi-static duplex or dynamic dual-mode.
3. according to the method described in claim 1, it is characterized in that, the common control channel by current transmission direction RNTI
It is scrambled.
4. according to the method described in claim 1, it is characterized in that, when the M time slot includes fixation descending time slot, incite somebody to action
The fixed descending time slot is skipped.
If 5. according to the method described in claim 1, it is characterized in that, current system be FDD system, the public affairs
The downstream transmission direction of control channel instruction is that the uplink and downlink of the M time slot of current downlink carrier or up-link carrier passes altogether
Defeated direction.
6. according to the method described in claim 1, it is characterized in that, the common control channel is located at first time slot
First character position, the configuration of subcarrier in frequency domain interval is using the sub- load identical with synchronizing signal within the scope of current system bandwidth
Wave spacing configures, and the frequency domain position of the common control channel immobilizes.
7. according to the method described in claim 1, it is characterized in that, the common control channel includes 2*M bit, each two
Successive bits are used to indicate the downstream transmission direction mode of a time slot.
8. according to the method described in claim 1, it is characterized in that, determine the M according to the broadcast of high-level signaling, and/or, root
The M is determined and updates according to being semi-statically configured.
9. according to the method described in claim 1, it is characterized in that, the assigned timeslot is used for transmission synchronizing signal to be fixed
With the time slot of MIB signals.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710060703.7A CN108347775A (en) | 2017-01-25 | 2017-01-25 | A kind of method for transmitting signals in communication system |
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| CN201710060703.7A CN108347775A (en) | 2017-01-25 | 2017-01-25 | A kind of method for transmitting signals in communication system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113873551A (en) * | 2018-08-03 | 2021-12-31 | 北京小米移动软件有限公司 | Parameter set acquisition method and device |
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Cited By (2)
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| CN113873551A (en) * | 2018-08-03 | 2021-12-31 | 北京小米移动软件有限公司 | Parameter set acquisition method and device |
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Application publication date: 20180731 |