CN106714321B - The method and device of the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal - Google Patents
The method and device of the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal Download PDFInfo
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- CN106714321B CN106714321B CN201610148075.3A CN201610148075A CN106714321B CN 106714321 B CN106714321 B CN 106714321B CN 201610148075 A CN201610148075 A CN 201610148075A CN 106714321 B CN106714321 B CN 106714321B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
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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
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The invention discloses a kind of method and devices of sub-frame set that transmitting-receiving uplink and downlink signals are determined for terminal.Wherein method includes the configuration information for receiving sub-frame of uplink set and downlink subframe set；Receive the scheduling authorization from base station；The sub-frame set for sending uplink signal and the sub-frame set for receiving downlink signal are determined based on the scheduling authorization.The technical program solves the problems, such as that the existing NB-IOT terminal using HD-FDD mode terminal in the transmission process for carrying out uplink signal may lost the Time and Frequency Synchronization with network, the problem of causing the quality of uplink signal to decline in turn, and then influencing the quality of reception and demodulation performance of the base station side to terminal uplink signal.
Description
Technical field
The present invention relates to narrowband internet of things field more particularly to a kind of determine for terminal to receive and dispatch uplink and downlink signals
The method and device of sub-frame set.
Background technique
Technology of Internet of things is in the ascendant, M2M (machine to machine, between machine and machine) communicate increasingly by
To the attention of communications industry circle, it is anticipated that various intelligence water meters, Intelligent logistics tracking, wearable device, car networking, intelligence
Energy Industry Control etc. will all complete the upgrading of each related industry using technology of Internet of things.In consideration of it, the following internet-of-things terminal
Quantity will reach 10,000,000,000 grades even considerably beyond the terminal quantity of H2H (Human to human, interpersonal) communication
Hundred billion grades.On the other hand, significant component of Internet of Things, which is applied, has data volume small, and, transmission insensitive to propagation delay time has
The features such as periodicity and generally longer period, these features provide possibility for the internet-of-things terminal of developing low-cost, on the other hand
The Terminal Design of low cost is conducive to accelerate the universal of technology of Internet of things.
In the technology of Internet of things application practice of some areas, for example intelligent water power of discovery part Internet of Things application scenarios
Table, the terminal signaling in the intelligent wireless sensor application of basement are blocked by installation site or floor and are influenced, signal by
To great decaying, therefore there is under the premise of not increasing operator's great amount of investment, promoted using coverage enhancement technology
The network coverage meets the network coverage of above-mentioned scene.The target requirement value for the typical coverage enhancement that operator provides at present is 15
~20dB.
To meet the demand, 3GPP provides the scheme of inexpensive internet-of-things terminal and coverage enhancement at present, mainly
For example, by reducing operation bandwidth of terminal, terminal radio frequency receives link number of channels is reduced, terminal peak rate is reduced, is reduced eventually
The modes such as end processing complexity realize inexpensive internet-of-things terminal design.On the other hand, by signal or channel repetition, frequency hopping,
It promotes the modes such as transmission power and realizes coverage enhancement.In 3GPP RELEASE 13, and NB-IOT (Narrow Band-IOT, it is narrow
With Internet of Things) project proposes that the target of the NB-IOT terminal of 180KHz radio frequency bandwidth is only supported in design, and the terminal both can be
Work (such as the carrier wave for reusing existing GSM 200KHz bandwidth) on independent carrier wave, can also be in LTE system bandwidth internal work
Make.
In order to further decrease the cost of terminal, NB-IOT terminal uses HD-FDD mode, in this way, NB-IOT terminal is same
One moment cannot sending and receiving data simultaneously.
As previously mentioned, NB-IOT terminal uses HD-FDD mode, and persistently several hundred thousands of height are needed in low SNR situation
Frame carries out the transmission of uplink signal, and at this moment, if uplink signal is continuously sent for a long time, terminal just loses downlink synchronization tracking
Opportunity, then in the transmission process that terminal carries out uplink signal terminal be possible to lose with the Time and Frequency Synchronization of network (this also by
Generally can also relatively inexpensive device be used to lead to end for example, by using the crystal oscillator for not having temperature compensation function in NB-IOT terminal
The frequency at end is affected by temperature transient change, in addition, however not excluded that the NB-IOT terminal applies field mobile in middle low velocity
Scape), cause the quality of uplink signal to decline, and then influence base station side to the quality of reception of terminal uplink signal and solution tonality
Energy.
Summary of the invention
Problems solved by the invention is the existing NB-IOT terminal using HD-FDD mode in the hair for carrying out uplink signal
Terminal may lost the problem of Time and Frequency Synchronization with network during sending, and then the quality of uplink signal is caused to decline, thus shadow
Base station side is rung to the quality of reception and demodulation performance of terminal uplink signal.
To solve the above problems, the embodiment of the invention provides the sub-frame sets for determining transmitting-receiving uplink and downlink signals for terminal
Method, include the following steps: receive sub-frame of uplink set and downlink subframe set configuration information；Receive the tune from base station
Degree authorization；The sub-frame set for sending uplink signal and the sub-frame set for receiving downlink signal are determined based on the scheduling authorization.
Optionally, the configuration information of the sub-frame of uplink set and downlink subframe set by system broadcast message carry or
Person is established in message by the RRC connection that base station is sent to the terminal and is carried.
Optionally, the sub-frame of uplink in the sub-frame of uplink set and downlink subframe set and downlink subframe are by uplink and downlink
The period that the pattern of sub-frame set and the pattern occur determines.
Optionally, the length that the sub-frame of uplink was integrated into a pattern period is to be based on terminal by base station to keep time-frequency
The synchronous time span factor within acceptable level is determined；
The length that the downlink subframe was integrated into a pattern period is the downlink business load by base station based on terminal
And/or the channel situation factor of terminal is determined；
Optionally, the period of the pattern is determined by the starting radio frames and starting sub-frame offset number of the pattern；Its
In, the starting radio frames and starting sub-frame offset number are determined by following formula:
(SFN × 10+staring_subframe_index-subframe_offset)/period_pattern=0
Wherein, subframe_offset is the sub-frame offset of setting, and period_pattern is the period of the pattern,
"/" is modulo operation；SFN is the starting radio frames that the calculated pattern periodically occurs；Staring_subframe_
Index is the position for originating subframe.
Optionally, the period of the pattern is the timing of the data transmit-receive based on determined by the scheduling authorization described in determination
The starting subframe of pattern and/or based on the time of downstream transmission with the total duration of the determination pattern.
Optionally, the timing of the data transmit-receive based on determined by the scheduling authorization is with starting of the determination pattern
Frame includes: the starting subframe that first subframe sending or receiving of data indicated by scheduling authorization is the pattern；Determine number
First subframe according to transmission is the starting subframe of the sub-frame of uplink part in the pattern；Determine first son of data receiver
Frame is the starting subframe of the downlink subframe part in the pattern.
Optionally, the scheduling authorization includes uplink scheduling authorization and descending scheduling authorization；It is described to be awarded based on the scheduling
Power determines the sub-frame set for sending uplink signal and the sub-frame set for receiving downlink signal includes:
When receiving uplink scheduling authorization and descending scheduling authorization simultaneously, and/or according to the instruction of uplink scheduling authorization,
When terminal needs to carry out the transmission of uplink signal in M sub-frame of uplink for being greater than the first number of subframes thresholding, terminal determines hair
The sub-frame set for sending uplink signal is that only the M sub-frame of uplink in the sub-frame of uplink set, terminal determine that receiving downlink believes
Number sub-frame set be the only subframe in the downlink subframe set；
When only receiving uplink scheduling authorization, and/or according to the instruction of scheduling authorization, terminal needs be greater than the first subframe
When carrying out the transmission of uplink signal in M sub-frame of uplink of number thresholding, terminal determines that the sub-frame set for sending uplink signal is
The only M sub-frame of uplink in the sub-frame of uplink set；
When only receiving descending scheduling authorization, the sub-frame set for the reception downlink signal that terminal determines is only in downlink
Subframe or terminal in frame set are based further on the middle mark bit indication of scheduling authorization to determine the son for receiving downlink signal
Frame set；
Wherein, the first number of subframes thresholding is the length of sub-frame of uplink set in a pattern period.
Optionally, described only to receive uplink scheduling authorization, and/or according to the instruction of scheduling authorization, terminal needs
When greater than the transmission for carrying out uplink signal in M sub-frame of uplink of the first number of subframes thresholding, terminal, which determines, sends uplink signal
Sub-frame set be only M sub-frame of uplink in the sub-frame of uplink set when further include:
After determining the M sub-frame of uplink for sending uplink signal, terminal is tuned to descending carrier again to receive downlink
Signal carries out Time and Frequency Synchronization.
Optionally, when only receiving descending scheduling authorization, the middle identification bit that terminal is based further on scheduling authorization refers to
Show and includes: with the sub-frame set for determining reception downlink signal
If the identification bit is set to 1, terminal determines that the sub-frame set for receiving downlink signal is only in downlink subframe set
In subframe；
If the identification bit is set to 0, the sub-frame set for the reception downlink signal that terminal determines is downlink subframe set
The subframe of subframe and sub-frame of uplink set.
Optionally, the terminal is the NB-IOT terminal using HD-FDD mode.
The embodiment of the invention also provides it is a kind of for terminal determine transmitting-receiving uplink and downlink signals sub-frame set method and
Device, comprising: configuration information reception device, for receiving the configuration information of sub-frame of uplink set and downlink subframe set；Scheduling
Information receiver, for receiving the scheduling authorization from base station；Subframe determining device, for being determined based on the scheduling authorization
It sends the sub-frame set of uplink signal and receives the sub-frame set of downlink signal.
Optionally, the configuration information of the sub-frame of uplink set and downlink subframe set by system broadcast message carry or
Person is established in message by the RRC connection that base station is sent to the terminal and is carried.
Optionally, the sub-frame of uplink in the sub-frame of uplink set and downlink subframe set and downlink subframe are by uplink and downlink
The period that the pattern of sub-frame set and the pattern occur determines.
Optionally, the length that the sub-frame of uplink was integrated into a pattern period is to be based on terminal by base station to keep time-frequency
The synchronous time span factor within acceptable level is determined；
The length that the downlink subframe was integrated into a pattern period is the downlink business load by base station based on terminal
And/or the channel situation factor of terminal is determined；
Optionally, the period of the pattern is determined by the starting radio frames and starting sub-frame offset number of the pattern；Its
In, the starting radio frames and starting sub-frame offset number are determined by following formula:
(SFN × 10+staring_subframe_index-subframe_offset)/period_pattern=0
Wherein, subframe_offset is the sub-frame offset of setting, and period_pattern is the period of the pattern,
"/" is modulo operation；SFN is the frame number for the starting radio frames that the calculated pattern periodically occurs；Staring_
Subframe_index is the position for originating subframe.
Optionally, the period of the pattern is the timing of the data transmit-receive based on determined by the scheduling authorization described in determination
The starting subframe of pattern and/or based on the time of downstream transmission with the total duration of the determination pattern.
Optionally, the timing of the data transmit-receive based on determined by the scheduling authorization is with starting of the determination pattern
Frame includes: the starting subframe that first subframe sending or receiving of data indicated by scheduling authorization is the pattern；Determine number
First subframe according to transmission is the starting subframe of the sub-frame of uplink part in the pattern；Determine first son of data receiver
Frame is the starting subframe of the downlink subframe part in the pattern.
Optionally, the scheduling authorization includes uplink scheduling authorization and descending scheduling authorization；The subframe determination unit packet
It includes:
First subframe determination unit, for when simultaneously receive uplink scheduling authorization and descending scheduling authorization when and/or root
According to the instruction of uplink scheduling authorization, terminal needs to carry out uplink letter in M sub-frame of uplink for being greater than the first number of subframes thresholding
Number transmission when, terminal determines that the sub-frame set for sending uplink signal is that only M uplink in the sub-frame of uplink set is sub
Frame, terminal determine that the sub-frame set for receiving downlink signal is the only subframe in the downlink subframe set；
Second subframe determination unit, for ought only receive uplink scheduling authorization, and/or according to the instruction of scheduling authorization,
When terminal needs to carry out the transmission of uplink signal in M sub-frame of uplink for being greater than the first number of subframes thresholding, terminal determines hair
Send the sub-frame set of uplink signal for the only M sub-frame of uplink in the sub-frame of uplink set；
Third subframe determination unit, for the reception downlink signal that when only receiving descending scheduling authorization, terminal is determined
Sub-frame set be that only the subframe in downlink subframe set or terminal are based further on the middle mark bit indication of scheduling authorization
To determine the sub-frame set for receiving downlink signal；
Wherein, the first number of subframes thresholding is the length of sub-frame of uplink set in a pattern period.
Optionally, the second subframe determination unit includes: frequency modulation unit, for determining the transmission uplink signal
After M sub-frame of uplink, terminal is tuned to descending carrier again to receive downlink signal and carry out Time and Frequency Synchronization.
Optionally, the third subframe determination unit includes:
Mark judges processing unit, if being set to 1 for the identification bit, terminal determines the subframe collection for receiving downlink signal
It is combined into the subframe only in downlink subframe set；If the identification bit is set to 0, the subframe for the reception downlink signal that terminal determines
Collection is combined into the subframe of downlink subframe set and the subframe of sub-frame of uplink set.
Optionally, the terminal is the NB-IOT terminal using HD-FDD mode.
Compared with prior art, technical solution of the present invention has the advantage that
The configuration information of sub-frame of uplink set and downlink subframe set is received using the NB-IOT terminal of HD-FDD mode,
Sub-frame of uplink in middle sub-frame of uplink set and downlink subframe set and downlink subframe be by the pattern of ascending-descending subframes set with
And the period that the pattern occurs determines.Further, terminal is determined according to the situation of the different scheduling authorizations received and is sent
The sub-frame set of uplink signal and the sub-frame set for receiving downlink signal.
This method ensure that when terminal repeats to send upstream data for a long time, under can also being obtained in downlink subframe set
On row synchronous opportunity, to guarantee terminal Time and Frequency Synchronization tracking performance, and then it ensure that the transmission reliability of upstream data, favorably
The upstream data of terminal transmission is correctly demodulated in base station.Meanwhile the opportunity that user equipment downlink synchronizes can be used not only for down time-frequency
It is synchronous to obtain, it can be also used for the reception that terminal carries out downlink data, this aspect improves the working efficiency of system, another party
Face also reduces the time that terminal totally receives downlink signal, reduces the total power consumption of terminal.
Detailed description of the invention
Fig. 1 is a kind of specific implementation of the method for sub-frame set that transmitting-receiving uplink and downlink signals are determined for terminal of the invention
The flow diagram of example；
Fig. 2 is a kind of configuration schematic diagram of ascending-descending subframes set using HD-FDD mode of the invention；
Fig. 3 is the configuration schematic diagram of another kind of the invention using the ascending-descending subframes set of HD-FDD mode；
Fig. 4 is a kind of knot of the device of sub-frame set that transmitting-receiving uplink and downlink signals are determined for terminal of the embodiment of the present invention
Structure schematic diagram.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
A kind of method of sub-frame set determining transmitting-receiving uplink and downlink signals for terminal of the invention as shown in Fig. 1
The flow diagram of specific embodiment.With reference to Fig. 1, this method comprises the following steps:
Step S1: the configuration information of sub-frame of uplink set and downlink subframe set is received；
Step S2: the scheduling authorization from base station is received；
Step S3: the sub-frame set for sending uplink signal and the son for receiving downlink signal are determined based on the scheduling authorization
Frame set.
It in the present embodiment, is described by taking the NB-IOT terminal using HD-FDD mode as an example.
For NB-IOT terminal, base station is the set of its collocating uplink sub-frame set and downlink subframe with confidence in advance
Breath.The configuration information of the sub-frame of uplink set and downlink subframe set in system broadcast message by carrying (such as in SIB message
Middle carrying) or established in message by the RRC connection that base station is sent to the terminal and carry that (in this case, base station can be with
According to the configuration for carrying out terminating stage the case where different terminals).
Sub-frame of uplink and downlink subframe are by ascending-descending subframes set in the sub-frame of uplink set and downlink subframe set
Pattern and the pattern occur period determine.
As shown in Fig. 2 using the configuration schematic diagram of the ascending-descending subframes set of HD-FDD mode.
With reference to Fig. 2, wherein UL subframe (i.e. sub-frame of uplink) set is continuous N_UL sub-frame of uplink composition, DL subframe
(i.e. downlink subframe) set is continuous N_DL downlink subframe composition.Between adjacent UL subframe set and DL subframe set
It also is spaced Hopping time T1 (or T2), wherein T1 is tuned to descending carrier from up-link carrier for terminal, and T2 is used under terminal
Row carrier fm is to up-link carrier.
In general, T1, T2 can be equal to a subframe.Therefore, the period of HD-FDD ascending-descending subframes set is (N_UL
+ N_DL) a subframe+T1+T2.The NB-PUSCH for repeating transmission is transmitted in sub-frame of uplink set, and a NB-PUSCH
(Narrow Band Physical Uplink Shared Channel) can be transmitted, one in multiple sub-frame of uplink set
NB-PDSCH (Narrow Band Physical Downlink Shared Channel) can also be in multiple downlink subframe collection
It is transmitted in conjunction.
For NB-IOT terminal, due to needing support the uplink sub-carrier interval of 3.75KHz, special definition
The slot length of 2ms, therefore more preferably, the length of UL subframe set is the multiple of 2ms.
For in Fig. 2 within a pattern period UL subframe set length, base station configuration when can be considered such as
Lower factor and principle: 1) terminal can keep time span T_ of the Time and Frequency Synchronization within certain acceptable level
maintain；Such as the length of UL subframe set is needed to be less than equal to T_maintain.2) if the length of DL subframe set is
In broadcast message configuration, a fixed value is needed to configure, then needs to consider the demand of most of terminals.
For the length of DL subframe set in a pattern period in Fig. 2, base station can be considered as follows in configuration
Factor and principle:
1) determine that the length of DL subframe set, such as terminal there are more DL data to need to pass based on the type of service of terminal
Defeated, the length of DL subframe set can configure relatively large；
2) need to consider the synchronisation requirement of terminal, if the channel quality of terminal is poor, the signal-to-noise ratio that such as works is very low, then eventually
Hold it is each it is subsynchronous may all take a long time, then at this time DL subframe set can configure as desired it is much longer；
3) if the length of DL subframe set is configured in broadcast message, a fixed value is needed to configure, then needs to examine
Consider the demand of most of terminals.
It should be noted that the downlink subframe in Fig. 2 within a pattern period in DL subframe set can be discontinuously
, for example, DL subframe set can not include base station be configured to MBSFN (Multimedia Broadcast multicast
Service Single Frequency Network, multicast/multicast single-frequency network network) subframe.
In UL/DL configuration period pattern shown in Fig. 2, before UL subframe is integrated into, after DL subframe is integrated into.But
Before can also being integrated into practical application with DL subframe, after UL subframe is integrated into.
Further, base station except need to configure above-mentioned UL subframe set length N_UL, DL subframe set length N_DL and
Outside Hopping time T1 and T2 parameter between UL subframe set and DL subframe set, it is also necessary to configure the pattern and rising for period occur
Beginning position.
Specifically, the period of the pattern is determined by the starting radio frames and starting sub-frame offset number of the pattern；
Wherein, the starting radio frames and starting sub-frame offset number are determined by following formula:
(SFN × 10+staring_subframe_index-subframe_offset)/period_pattern=0
Wherein, subframe_offset is the sub-frame offset of setting；Period_pattern is the period of the pattern,
"/" is modulo operation；SFN is the frame number for the starting radio frames that the calculated pattern periodically occurs；Staring_
Subframe_index is the position for originating subframe.
In other embodiments, the period of the pattern can also the data transmit-receive based on determined by the scheduling authorization it is fixed
When being continued with the starting subframe of the determination pattern and/or based on the time of downstream transmission with the determination pattern total
Between.
Specifically, the period of the pattern can be come into force based on scheduling authorization triggering, i.e., determined based on scheduling authorization
Data transmit-receive timing determination described in pattern starting subframe and/or the total of the pattern is determined based on the time of downstream transmission
Duration.
Wherein, the timing of the data transmit-receive based on determined by the scheduling authorization is with the starting subframe of the determination pattern
It include: the starting subframe that first subframe sending or receiving of data indicated by scheduling authorization is the pattern；Alternatively, determining
First subframe that data are sent is the starting subframe of the sub-frame of uplink part in the pattern；Alternatively, determining data receiver
First subframe is the starting subframe of the downlink subframe part in the pattern.
As shown in figure 3, terminal receives DCI (Downlink Control Information, the downlink control of uplink and downlink scheduling
Information processed) after, the pattern of UL subframe set and DL subframe set is just activated, after the DCI that UL channel authorization is received such as terminal, according to
UL subframe where the timing relationship of determining DCI and NB-PUSCH can determine NB-PUSCH repeats first subframe sent
Position, then the subframe position is just the initial position of pattern (as shown in the first situation in Fig. 3).For another example if terminal is received
Downlink transfer subframe determined by DCI to descending scheduling is in preceding (as shown in the second situation in Fig. 3), then DL in pattern
First subframe in frame set is initial position, and pattern behind is kept for the pattern period completed.Further, in this reality
It applies in example, total entry-into-force time of the pattern is determined by the time of downstream transmission, when the equal end of transmission of uplink and downlink data,
Then pattern fails.
Further, terminal is determined the sub-frame set for sending uplink signal and is connect based on the scheduling authorization received
Receive the sub-frame set of downlink signal.Wherein, the scheduling authorization includes uplink scheduling authorization and descending scheduling authorization according to difference
Scheduling authorization, terminal determines the sub-frame set for sending uplink signal and do not receive the mode of the sub-frame set of downlink signal also not
It is identical to the greatest extent.Specifically,
1) when terminal receives uplink scheduling authorization and descending scheduling authorization simultaneously, and/or according to uplink scheduling authorization
Instruction, when terminal needs to carry out the transmission of upstream data in M sub-frame of uplink for being greater than the first number of subframes thresholding, terminal is true
Surely the reception that the sub-frame set of uplink signal determines for the only M sub-frame of uplink in the sub-frame of uplink set, terminal is sent
The sub-frame set of downlink signal is the only subframe in downlink subframe set.
Wherein, according to the instruction of uplink scheduling authorization, terminal is determining to be needed in the M for being greater than the first number of subframes thresholding terminal
The transmission that upstream data is carried out in a sub-frame of uplink indicates that terminal takes a long time to complete the transmission of all uplink signals,
Therefore need be inserted into uplink transmission process some downlink subframe set for terminal during receiving downlink data into
Row downlink synchronization tracking.Wherein the first number of subframes thresholding can be according to the movement speed of terminal, the setting of the factors such as terminal grade.
Preferably, the first number of subframes thresholding is equal to the length of UL subframe set in one pattern period.
2) when terminal only receives uplink scheduling authorization, and/or according to the instruction of scheduling authorization, terminal needs be greater than first
When carrying out the transmission of uplink signal in M sub-frame of uplink of number of subframes thresholding, terminal determines the subframe collection for sending uplink signal
It is combined into the M sub-frame of uplink only in the sub-frame of uplink set.For this method, further includes: terminal is determining the transmission
After the M sub-frame of uplink of upstream data, terminal is tuned to descending carrier again and goes to receive downlink signal progress Time and Frequency Synchronization, the downlink
Signal includes downlink synchronous signal, broadcast channel and pilot signal etc..
3) when terminal only receives descending scheduling authorization, the sub-frame set for the reception downlink signal that terminal determines is only under
Subframe or terminal in row sub-frame set are based further on the middle mark bit indication of scheduling authorization, determine and receive downlink signal
Sub-frame set.
Wherein, terminal is based further on the middle mark bit indication of scheduling authorization, determines the subframe collection for receiving downlink signal
Conjunction specifically includes: if the identification bit is set to " 1 ", the sub-frame set for the reception downlink signal that terminal determines is only in downlink
The subframe of the set of frame；If the bit is set to " 0 ", the sub-frame set for the reception downlink signal that terminal determines is downlink subframe collection
The subframe of conjunction and the subframe of sub-frame of uplink set.Vice versa.
The embodiment of the invention also provides a kind of configuration devices of ascending-descending subframes set for terminal.As shown in Figure 4
Be the embodiment of the present invention it is a kind of for terminal determine transmitting-receiving uplink and downlink signals sub-frame set device structural schematic diagram.
With reference to Fig. 4, described device 1 includes: configuration information receiving unit 11, for receiving sub-frame of uplink set and downlink subframe set
Configuration information；Scheduling information receiving unit 12, for receiving the scheduling authorization from base station；Subframe determination unit 13 is used for base
The sub-frame set for sending uplink signal and the sub-frame set for receiving downlink signal are determined in the scheduling authorization.
The configuration information of the sub-frame of uplink set and downlink subframe set in system broadcast message by carrying or by base
The RRC connection that station is sent to the terminal, which is established in message, to be carried.
Sub-frame of uplink and downlink subframe in the sub-frame of uplink set and downlink subframe set are by ascending-descending subframes
The period that pattern and the pattern occur determines.
The period of the pattern is determined by the starting radio frames and starting sub-frame offset number of the pattern；Wherein, described
Starting radio frames and starting sub-frame offset number are determined by following formula:
(SFN × 10+staring_subframe_index-subframe_offset)/period_pattern=0
Wherein, subframe_offset is the sub-frame offset of setting, and period_pattern is the period of the pattern,
"/" is modulo operation；SFN is the frame number for the starting radio frames that the calculated pattern periodically occurs；Staring_
Subframe_index is the position for originating subframe.
The period of the pattern is the timing of the data transmit-receive based on determined by the scheduling authorization with the determination pattern
Originate subframe and/or based on the time of downstream transmission with the total duration of the determination pattern.
The data transmit-receive based on determined by scheduling authorization timing includes: with the starting subframe of the determination pattern
First subframe that data indicated by scheduling authorization send or receive is the starting subframe of the pattern；Determine what data were sent
First subframe is the starting subframe of the sub-frame of uplink part in the pattern；Determine that first subframe of data receiver is described
The starting subframe of downlink subframe part in pattern.
The scheduling authorization includes uplink scheduling authorization and descending scheduling authorization；The subframe determination unit 13 includes:
First subframe determination unit (not shown), for uplink scheduling authorization and descending scheduling authorization ought to be received simultaneously
When, and/or according to the instruction of uplink scheduling authorization, terminal needs in M sub-frame of uplink for being greater than the first number of subframes thresholding
When carrying out the transmission of uplink signal, terminal determines that the sub-frame set for sending uplink signal is only in the sub-frame of uplink set
M sub-frame of uplink, terminal determine that the sub-frame set for receiving downlink signal is the only subframe in the downlink subframe set；
Second subframe determination unit (not shown), for ought only receive uplink scheduling authorization, and/or according to scheduling authorization
Instruction, terminal need be greater than the first number of subframes thresholding M sub-frame of uplink in progress uplink signal transmission when, terminal
Determine that the sub-frame set for sending uplink signal is the only M sub-frame of uplink in the sub-frame of uplink set；
Third subframe determination unit (not shown), for the reception that when only receiving descending scheduling authorization, terminal is determined
The sub-frame set of downlink signal is the middle mark that only subframe in downlink subframe set or terminal are based further on scheduling authorization
Bit indication receives the sub-frame set of downlink signal to determine；
Wherein, the first number of subframes thresholding is the length of sub-frame of uplink set in a pattern period.
The second subframe determination unit includes frequency modulation unit (not shown), for determining the transmission uplink signal
After M sub-frame of uplink, terminal is tuned to descending carrier again to receive downlink signal and carry out Time and Frequency Synchronization.
The third subframe determination unit includes that mark judges processing unit (not shown), if being set to for the identification bit
1, then terminal determines that the sub-frame set for receiving downlink signal is the only subframe in downlink subframe set；If the identification bit is set to
0, then the sub-frame set for the reception downlink signal that terminal determines is the subframe of downlink subframe set and the son of sub-frame of uplink set
Frame.
In conclusion the technical program, which solves the existing NB-IOT terminal using HD-FDD mode, is carrying out uplink letter
Number transmission process in terminal the problem of may lost the Time and Frequency Synchronization with network, and then the quality of uplink signal is caused to decline,
To influence base station side to the quality of reception and demodulation performance of terminal uplink signal.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can store in computer readable storage medium, storage
Medium may include: ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (20)
1. a kind of method for the sub-frame set for determining transmitting-receiving uplink and downlink signals for terminal, which comprises the steps of:
Receive the configuration information of sub-frame of uplink set and downlink subframe set；
Receive the scheduling authorization from base station；
The sub-frame set for sending uplink signal and the sub-frame set for receiving downlink signal are determined based on the scheduling authorization；
Sub-frame of uplink and downlink subframe in the sub-frame of uplink set and downlink subframe set are by ascending-descending subframes set
The period that pattern and the pattern occur determines；The period of the pattern is that the data based on determined by the scheduling authorization are received
Hair timing is continued with the starting subframe of the determination pattern and/or based on the time of downstream transmission with the total of the determination pattern
Time.
2. the method for the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as described in claim 1, which is characterized in that
The configuration information of the sub-frame of uplink set and downlink subframe set in system broadcast message by carrying or being sent to by base station
The RRC connection of the terminal, which is established in message, to be carried.
3. the method for the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as claimed in claim 2, which is characterized in that
The length that the sub-frame of uplink was integrated into a pattern period is to be based on terminal by base station to keep Time and Frequency Synchronization that can connect
It is determined by the time span factor within level；
The length that the downlink subframe was integrated into a pattern period be downlink business load by base station based on terminal and/or
The channel situation factor of terminal is determined.
4. the method for the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as described in claim 1, which is characterized in that
The period of the pattern is determined by the starting radio frames and starting sub-frame offset number of the pattern；Wherein, the starting is wireless
Frame and starting sub-frame offset number are determined by following formula:
(SFN × 10+staring_subframe_index-subframe_offset)/period_pattern=0
Wherein, subframe_offset is the sub-frame offset of setting, and period_pattern is the period of the pattern, and "/" is
Modulo operation；SFN is the frame number for the starting radio frames that the calculated pattern periodically occurs；staring _subframe_
Index is the position for originating subframe.
5. the method for the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as described in claim 1, which is characterized in that
The data transmit-receive based on determined by scheduling authorization timing includes: with the starting subframe of the determination pattern
First subframe that data indicated by scheduling authorization send or receive is the starting subframe of the pattern；Or
Determine first subframe that data are sent for the starting subframe of the sub-frame of uplink part in the pattern；Or
First subframe for determining data receiver is the starting subframe of the downlink subframe part in the pattern.
6. the method for the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as described in claim 1, which is characterized in that
The scheduling authorization includes uplink scheduling authorization and descending scheduling authorization；Described determined based on the scheduling authorization sends uplink letter
Number sub-frame set and receive downlink signal sub-frame set include:
When receiving uplink scheduling authorization and descending scheduling authorization simultaneously, and/or according to the instruction of uplink scheduling authorization, terminal
When needing to carry out the transmission of uplink signal in M sub-frame of uplink for being greater than the first number of subframes thresholding, terminal, which determines, to be sent
The sub-frame set of row signal is that only the M sub-frame of uplink in the sub-frame of uplink set, terminal determine reception downlink signal
Sub-frame set is the only subframe in the downlink subframe set；
When only receiving uplink scheduling authorization, and/or according to the instruction of scheduling authorization, terminal needs be greater than the first number of subframes
When carrying out the transmission of uplink signal in M sub-frame of uplink of thresholding, terminal determines that the sub-frame set for sending uplink signal is only to exist
M sub-frame of uplink in the sub-frame of uplink set；
When only receiving descending scheduling authorization, the sub-frame set for the reception downlink signal that terminal determines is only in downlink subframe collection
Subframe or terminal in conjunction are based further on the middle mark bit indication of scheduling authorization to determine the subframe collection for receiving downlink signal
It closes.
7. the method for the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as claimed in claim 6, which is characterized in that
The first number of subframes thresholding is the length of sub-frame of uplink set in a pattern period.
8. the method for the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as claimed in claim 6, which is characterized in that
It is described only to receive uplink scheduling authorization, and/or according to the instruction of scheduling authorization, terminal needs be greater than the first number of subframes
When carrying out the transmission of uplink signal in M sub-frame of uplink of thresholding, terminal determines that the sub-frame set for sending uplink signal is only to exist
When M sub-frame of uplink in the sub-frame of uplink set further include:
After determining the M sub-frame of uplink for sending uplink signal, terminal is tuned to descending carrier again to receive downlink signal
Carry out Time and Frequency Synchronization.
9. the method for the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as claimed in claim 6, which is characterized in that
When only receiving descending scheduling authorization, terminal is based further on the middle mark bit indication of scheduling authorization and receives downlink to determine
The sub-frame set of signal includes:
If the identification bit is set to 1, terminal determines that the sub-frame set for receiving downlink signal is only in downlink subframe set
Subframe；
If the identification bit is set to 0, the sub-frame set for the reception downlink signal that terminal determines is the subframe of downlink subframe set
And the subframe of sub-frame of uplink set.
10. the method for determining the sub-frame set of transmitting-receiving uplink and downlink signals for terminal as described in claim 1, feature exist
In the terminal is the NB-IOT terminal using HD-FDD mode.
11. a kind of device for the sub-frame set for determining transmitting-receiving uplink and downlink signals for terminal characterized by comprising match confidence
Receiving unit is ceased, for receiving the configuration information of sub-frame of uplink set and downlink subframe set；Scheduling information receiving unit, is used for
Receive the scheduling authorization from base station；
Subframe determination unit is believed for being determined to send the sub-frame set of uplink signal and receive downlink based on the scheduling authorization
Number sub-frame set；
Sub-frame of uplink and downlink subframe in the sub-frame of uplink set and downlink subframe set are by ascending-descending subframes set
The period that pattern and the pattern occur determines the period that the pattern of sub-frame set and the pattern occur to determine；The figure
The period of sample is the timing of the data transmit-receive based on determined by the scheduling authorization with the starting subframe and/or base of the determination pattern
In downstream transmission time with the total duration of the determination pattern.
12. the device of the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as claimed in claim 11, which is characterized in that
The configuration information of the sub-frame of uplink set and downlink subframe set in system broadcast message by carrying or being sent to by base station
The RRC connection of the terminal, which is established in message, to be carried.
13. the device of the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as claimed in claim 12, which is characterized in that
The length that the sub-frame of uplink was integrated into a pattern period is to be based on terminal by base station to keep Time and Frequency Synchronization that can connect
It is determined by the time span factor within level；
The length that the downlink subframe was integrated into a pattern period be downlink business load by base station based on terminal and/or
The channel situation factor of terminal is determined.
14. the device of the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as claimed in claim 11, which is characterized in that
The period of the pattern is determined by the starting radio frames and starting sub-frame offset number of the pattern；Wherein, the starting
Radio frames and starting sub-frame offset number are determined by following formula:
(SFN × 10+staring_subframe_index-subframe_offset)/period_pattern=0
Wherein, subframe_offset is the sub-frame offset of setting, and period_pattern is the period of the pattern, and "/" is
Modulo operation；SFN is the frame number for the starting radio frames that the calculated pattern periodically occurs；staring _subframe_
Index is the position for originating subframe.
15. the device of the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as claimed in claim 11, which is characterized in that
The data transmit-receive based on determined by scheduling authorization timing includes: with the starting subframe of the determination pattern
First subframe that data indicated by scheduling authorization send or receive is the starting subframe of the pattern；Or
Determine first subframe that data are sent for the starting subframe of the sub-frame of uplink part in the pattern；Or
First subframe for determining data receiver is the starting subframe of the downlink subframe part in the pattern.
16. the device of the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as claimed in claim 11, which is characterized in that
The scheduling authorization includes uplink scheduling authorization and descending scheduling authorization；The subframe determination unit includes:
First subframe determination unit, for when receiving uplink scheduling authorization and descending scheduling authorization simultaneously, and/or according to upper
The instruction of row scheduling authorization, terminal need to carry out uplink signal in M sub-frame of uplink for being greater than the first number of subframes thresholding
When transmission, terminal determines that the sub-frame set for sending uplink signal is the only M sub-frame of uplink in the sub-frame of uplink set, eventually
End determines that the sub-frame set for receiving downlink signal is the only subframe in the downlink subframe set；
Second subframe determination unit, for ought only receive uplink scheduling authorization, and/or according to the instruction of scheduling authorization, terminal
When needing to carry out the transmission of uplink signal in M sub-frame of uplink for being greater than the first number of subframes thresholding, terminal, which determines, to be sent
The sub-frame set of row signal is the only M sub-frame of uplink in the sub-frame of uplink set；
Third subframe determination unit, for the son for receiving downlink signal that when only receiving descending scheduling authorization, terminal is determined
Frame collection is combined into subframe only in downlink subframe set or terminal is based further on the middle mark bit indication of scheduling authorization with true
Surely the sub-frame set of downlink signal is received.
17. the device of the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as claimed in claim 16, which is characterized in that
The first number of subframes thresholding is the length of sub-frame of uplink set in a pattern period.
18. the device of the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as claimed in claim 16, which is characterized in that
The second subframe determination unit includes: frequency modulation unit, for determine it is described send uplink signal M sub-frame of uplink after,
Terminal is tuned to descending carrier again to receive downlink signal and carry out Time and Frequency Synchronization.
19. the device of the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as claimed in claim 16, which is characterized in that
The third subframe determination unit includes:
Mark judges processing unit, if being set to 1 for the identification bit, terminal determines that the sub-frame set for receiving downlink signal is
The only subframe in downlink subframe set；If the identification bit is set to 0, the sub-frame set for the reception downlink signal that terminal determines
For the subframe of downlink subframe set and the subframe of sub-frame of uplink set.
20. the device of the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal as claimed in claim 11, which is characterized in that
The terminal is the NB-IOT terminal using HD-FDD mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610148075.3A CN106714321B (en) | 2016-03-15 | 2016-03-15 | The method and device of the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610148075.3A CN106714321B (en) | 2016-03-15 | 2016-03-15 | The method and device of the sub-frame set of transmitting-receiving uplink and downlink signals is determined for terminal |
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| CN106714321B true CN106714321B (en) | 2019-06-07 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103201968A (en) * | 2011-03-25 | 2013-07-10 | Lg电子株式会社 | Communication method and device in a wireless communication system |
| CN104303577A (en) * | 2012-05-16 | 2015-01-21 | 瑞典爱立信有限公司 | Method and arrangement in a communications network |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8155032B2 (en) * | 2007-11-16 | 2012-04-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Adaptive scheduling for half-duplex wireless terminals |
| US9749120B2 (en) * | 2014-01-30 | 2017-08-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Uplink/downlink switching in half-duplex frequency division duplex communication |
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2016
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103201968A (en) * | 2011-03-25 | 2013-07-10 | Lg电子株式会社 | Communication method and device in a wireless communication system |
| CN104303577A (en) * | 2012-05-16 | 2015-01-21 | 瑞典爱立信有限公司 | Method and arrangement in a communications network |
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