CN109803388A - Method, equipment and computer readable storage medium for unlicensed band communication - Google Patents
Method, equipment and computer readable storage medium for unlicensed band communication Download PDFInfo
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- CN109803388A CN109803388A CN201711145620.4A CN201711145620A CN109803388A CN 109803388 A CN109803388 A CN 109803388A CN 201711145620 A CN201711145620 A CN 201711145620A CN 109803388 A CN109803388 A CN 109803388A
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Abstract
Embodiment of the disclosure is related to method, equipment and the computer readable storage medium communicated for unlicensed band.According to the embodiments herein, terminal device determines that the modulation code configuration for being used for multiple uplink subframes, the modulation code configuration indicate at least two Modulation and Coding Scheme in multiple uplink subframes.Terminal device determines the initial position in multiple uplink subframes, and based on the initial position and determined modulation code configuration, executes the uplink transmission.According to the embodiments herein, terminal device uses at least two Modulation and Coding Scheme, uplink transmission is carried out in initial subframe and subsequent subframe, without preparing the uplink transport blocks of multiple versions for multiple possible initial positions, to reduce the implementation complexity of terminal device.Particularly, in the case where the Modulation and Coding Scheme for initial subframe is scheduled low-order-modulated encoding scheme, the uplink receiving success rate at the network equipment will be enhanced.
Description
Technical field
Embodiment of the disclosure relates generally to wireless communication technique, carries out more particularly, to in unlicensed band
Method, equipment and the computer readable storage medium that uplink sends and receives.
Background technique
Unlicensed band communication is the spectrum efficiency for improving wireless network, the key technology for promoting network capacity.Generally,
In authorized frequency bands communication, terminal device is needing to be implemented " listem-before-talk " (LBT) process.Typically, uplink is being carried out
Before transmission, terminal device needs first to carry out signal energy measurement for unlicensed band, is worked as with obtaining about the unlicensed band
The information of preceding service condition.In the case where measured signal energy is lower than certain threshold energy, then the terminal device thinks this
Unlicensed band is in idle condition and accesses the frequency band to be communicated.
In supporting the unlicensed band transmitted from primary uplink communication, terminal device is allowed in preconfigured money
It is transmitted on source, i.e., the terminal device need not all receive individual uplink transmission for the transmission of each uplink and be permitted
It can.In being transmitted from primary uplink, since terminal device can be to avoid transmission uplink scheduling request and reception uplink
Link authorization, therefore propagation delay time can be reduced from primary uplink transmission.Particularly, in high load situations, autonomous uplink
Additional transmitted time delay caused by link transmission can also mitigate due to channel access limitation.
Summary of the invention
In the disclosure in a first aspect, providing a kind of communication means realized at terminal device.This method comprises: really
Surely the modulation code configuration for multiple uplink subframes of unlicensed band communication, modulation code configuration instruction is for being somebody's turn to do
The different Modulation and Coding Scheme of at least two of multiple uplink subframes；From multiple uplink subframe determine for from
The initial position that the uplink of the terminal device to the network equipment is transmitted；And it is compiled based on the initial position and the modulation
Code configuration executes the uplink transmission.
In the second aspect of the disclosure, a kind of communication means realized at the network equipment is provided.This method comprises: really
Surely the modulation code configuration for multiple uplink subframes of unlicensed band communication, modulation code configuration instruction is for being somebody's turn to do
The different Modulation and Coding Scheme of at least two of multiple uplink subframes；From multiple uplink subframe determine for from
The initial position that the uplink of terminal device to the network equipment is transmitted；And based on the modulation code configuration and this is initial
Position receives uplink transmission.
In the third aspect of the disclosure, a kind of terminal device is provided.The terminal device includes: processor, and storage
Device, the memory are stored with instruction, which makes the terminal device execute following movement when being executed by processor: determination is used for
The modulation code configuration of multiple uplink subframes of unlicensed band communication, modulation code configuration instruction is for multiple
The different Modulation and Coding Scheme of at least two of uplink subframe；It determines from multiple uplink subframe for from the terminal
The initial position that the uplink of equipment to the network equipment is transmitted；And it is based on the initial position and the modulation code configuration,
Execute uplink transmission.
The fourth aspect of the disclosure provides a kind of network equipment.The network equipment includes: processor and memory,
The memory is stored with instruction, which makes the network equipment execute following movement when being executed by processor: determining for non-
The modulation code configuration of multiple uplink subframes of authorized frequency bands communication, modulation code configuration instruction are used for multiple uplink
The different Modulation and Coding Scheme of at least two of link subframe；It determines from multiple uplink subframe for from terminal device
The initial position transmitted to the uplink of the network equipment；And it is based on the modulation code configuration and the initial position, it connects
Receive uplink transmission.
At the 5th aspect, embodiment of the disclosure provides a kind of computer readable storage medium.The computer-readable storage
Medium includes the program code being stored thereon, which execute device according to first aspect when being executed by device
Or the method for second aspect.
It should be appreciated that content described in Summary is not intended to limit the key or again of the embodiment of the present disclosure
Feature is wanted, it is also non-for limiting the scope of the present disclosure.The other feature of the disclosure will be easy to understand by description below.
Detailed description of the invention
From following disclosure and claim, the purpose of the present invention, advantage and other features will become brighter
It is aobvious.Here merely for exemplary purpose, the non restrictive description of preferred embodiment is provided with reference to attached drawing, in the accompanying drawings:
Fig. 1 shows the schematic diagram for supporting the example communication system of unlicensed band communication；
Fig. 2 shows the interaction figures transmitted according to the uplink of some embodiments of the disclosure；
Fig. 3 shows the flow chart for the exemplary method of some embodiments according to the disclosure implemented at terminal device；
Fig. 4 shows the flow chart for the exemplary method of some embodiments according to the disclosure implemented at the network equipment；
Fig. 5 A and 5B respectively illustrate the schematic diagram of the uplink transmission process of some embodiments according to the disclosure；
And
Fig. 6 shows the block diagram of communication equipment according to an embodiment of the present disclosure.
In various figures, identical or corresponding reference number indicates same or similar element.
Specific embodiment
Embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the certain of the disclosure in attached drawing
Embodiment, it should be understood that, the disclosure can be realized by various forms, and should not be construed as being limited to this
In the embodiment that illustrates, providing these embodiments on the contrary is in order to more thorough and be fully understood by the disclosure.It should be understood that
It is that the accompanying drawings and embodiments of the disclosure are given for example only effect, is not intended to limit the protection scope of the disclosure.
Term " terminal device " used herein or " user equipment " (UE) be refer between the network equipment or
Any entity or equipment carried out wireless communication each other.As an example, terminal device may include mobile terminal (MT), order
Family platform (SS), portable subscriber platform (PSS), mobile station (MS) or access terminal (AT), vehicle-mounted above equipment and have
Machine or electric appliance of communication function etc..
Term " network equipment " used herein, which refers to, is capable of providing cell or covering so that terminal device can lead to
It is crossed to access network or receive from it any appropriate entity or equipment of service.The example of the network equipment is for example including base
It stands.Term " base station " (BS) used herein can indicate node B (NodeB or NB), evolution node B (eNodeB or
ENB), remote radio unit (RRU), radio-frequency maser (RH), Remote Radio head end (RRH), repeater or such as pico- base
It stands, low power nodes of femto base station etc. etc..
Term " includes " used herein and its deformation are that opening includes, i.e., " including but not limited to ".Term " base
In " it is " being based at least partially on ".Term " one embodiment " expression " at least one embodiment "；Term " another embodiment " table
Show " at least one other embodiment ".Term " first ", " second " etc. are used only for an element and another element area
It separates.And actually the first element can also be referred to as second element, vice versa.The related definition of other terms will be under
It is provided in text description.
For the ease of explaining, some realities for introducing the disclosure herein with wireless communication (such as cellular communication) is background
Example is applied, and using the term in the long term evolution/long term evolution-advanced (LTE/LTE-A) or 5G of such as 3GPP formulation.So
And as will be understood by the skilled person in the art, embodiment of the disclosure is not limited to follow the wireless communication association of 3GPP formulation
The wireless communication system of view, but can be applied in any communication system there are similar problems, such as WLAN, cable modem
Other communication systems etc. of letter system or in the future research and development.
Fig. 1 shows the schematic diagram for supporting the example communication system 100 of unlicensed band communication.In this example, it communicates
System 100 may include the network equipment 110 and terminal device 120,130.In unlicensed band, the network equipment 110 is place
Terminal device 120,130 within its coverage area provides wireless connection.It should be appreciated that the network equipment shown in FIG. 1, terminal
The number of equipment has no intention to limit merely for the sake of illustration purpose.Communication system 100 may include any an appropriate number of
The network equipment and terminal device.
Without loss of generality, the communication in communication system 100 can follow any appropriate wireless communication technique and corresponding
Communication standard.The example of the communication technology includes but is not limited to long term evolution (LTE), LTE- advanced (LTE-A), wideband code division
Multiple access accesses (WCDMA), CDMA (CDMA), global system for mobile communications (GSM), orthogonal frequency division multiple access (OFDM), wireless
Local area network (WLAN), World Interoperability for Microwave Access, WiMax (WiMAX), bluetooth, ZigBee technology, machine type communication (MTC),
D2D or M2M etc..Moreover, communication can be executed according to any suitably communication protocol, these communication protocols include but not
It is limited to, transmission control protocol (TCP)/Internet protocol (IP), hypertext transfer protocol (HTTP), User Datagram Protocol
(UDP), Session Description Protocol (SDP) etc. agreement.
In Fig. 1, communication system 100 operates in unlicensed band, i.e., terminal device 120,130 can share this and non-award
Power frequency band is communicated with the network equipment 110.Term " unlicensed band " used herein refers to that multiple terminal devices can be with
By frequency coexistence technology, to share the unlicensed band to carry out communications.
Typical frequency coexistence technology is, for example, to be based on " listem-before-talk " rule.Specifically, terminal device 120,130 exists
It accesses before unlicensed band, first the signal energy in unlicensed band is measured.If the measurement knot of signal energy
Fruit is lower than threshold energy, then terminal device 120,130 can determine that the unlicensed band is in idle condition, and then can access
The unlicensed band is to carry out uplink transmission.In the case where the measurement result of signal energy is more than threshold energy, terminal
Equipment 120,130 can determine that the unlicensed band is in occupied state, i.e., terminal device 120,130 will not in this case
Access the unlicensed band.
In order to support flexible and efficient uplink to transmit in unlicensed band communicates, the network equipment 110 can be directed to
Terminal device 120,130 configures multiple initial positions in time domain, so that terminal device 120,130 is transmitted in uplink
When, it can be according to the channel occupancy situation of unlicensed band and the multiple initial positions configured, to determine for starting
The specific initial position of uplink transmission.
As an example, terminal device 120,130 is needed based on " listem-before-talk " process in transmitting from primary uplink
Signal energy measurements, to determine the specific initial position for carrying out uplink transmission in multiple uplink subframes.Cause
This, in uplink transport blocks (TB) preparation stage, terminal device 120,130 can not know corresponding to practical initial position just
The time span of beginning subframe.Particularly, typically from primary uplink transmission, the network equipment may be using static or half
The mode of static configuration is terminal equipment configuration one fixed Modulation and Coding Scheme (MCS).In this case, due to end
End equipment needs to punch a part transmission symbol according to initial position, so if terminal device uses the tune of the fixation
Encoding scheme processed carries out uplink transmission, this, which will lead to the network equipment and possibly can not transmit to uplink, be properly received.
In addition, in order to avoid punching caused upstream performance loss, terminal device may need to be directed to multiple upper line home positions
And prepare the transmission block of multiple versions, then it selects the transmission block using which version according to specific initial position, with
It is transmitted as uplink.But this will increase the implementation complexity of terminal device, and lead to additional processing delay.
In order at least be partially solved above-mentioned and other potential problems, embodiment of the disclosure is proposed based on including extremely
The unlicensed band uplink transmission plan of few two coded modulation schemes.
In general, according to embodiment described herein, supporting the unlicensed band transmitted from primary uplink logical
In letter, terminal device 120,130 can determine that the modulating-coding of multiple uplink subframes for unlicensed band communication is matched
It sets, Modulation and Coding Scheme of the modulation code configuration instruction for each subframe of multiple uplink subframes, and it is at least
Including two different Modulation and Coding Scheme.Before carrying out uplink, terminal device 120,130 is for example, by " after first listening
Say " process determine for start carry out uplink transmission initial position.Based on identified modulation code configuration and just
Beginning position, terminal device 120,130 execute uplink transmission since initial position.According to this exemplary method, terminal
Equipment 120,130 may use at least two Modulation and Coding Scheme, with for initial subframe associated with initial position with
And subsequent subframe carries out uplink transmission.
Compared to only with fix a Modulation and Coding Scheme tradition from primary uplink transmission plan, according to the disclosure
In method, terminal device 120,130 can use additional Modulation and Coding Scheme, with the uplink for for example initial subframe
Road transmission, to improve the uplink receiving success rate of the network equipment 110.Particularly, in embodiment of the disclosure, terminal device
120,130 woth no need to prepare the transmission blocks of multiple versions, this will reduce the implementation complexity of terminal device 120,130.Below will
It is unfolded to be described in detail with reference to several example embodiments.Particularly, in order to enable the disclosure principle and spirit by more preferable geographical
Solution may will describe some embodiments with reference to certain specific values (for example, numerical value shown in following table 1 and table 2).But
It is it should be appreciated that these numerical value are only example, it is not intended to limit the scope of the present disclosure in any way.Any other number appropriate
Value may be utilized.
First refering to fig. 2, it illustrates the interaction figures 200 according to the uplink transmission of some embodiments of the disclosure.
For the convenience of description, below with reference in Fig. 1 the network equipment 110 and terminal device 120 be described.
Generally, in accordance with an embodiment of the present disclosure, the network equipment 110 sends 205 to terminal device 120 and is used for multiple
The associated signaling of the modulation code configuration of uplink subframe, modulation code configuration instruction is for multiple uplink subframes
Corresponding Modulation and Coding Scheme, and the modulation code configuration includes at least two Modulation and Coding Scheme different from each other.It is based on
Received signaling, terminal device 120 determine 210 modulation code configurations for being used for multiple uplink subframes.Start into
Before the transmission of row uplink, terminal device 120 is for example according to " listem-before-talk " rule as a result, determine 215 in multiple uplinks
The initial position for starting to carry out uplink transmission for terminal device 120 in link subframe.As an example, the initial position
It can be associated in a time-domain symbol in a subframe in multiple uplink subframes.Terminal device 120 is based on institute really
Fixed modulation code configuration and initial position executes the transmission of 220 uplinks.
In certain embodiments, at least two Modulation and Coding Scheme can be all sent to by the network equipment 110 by signaling
Terminal device 120.Alternatively or in addition to, the network equipment 110 can also be sent out a Modulation and Coding Scheme by signaling
Terminal device 120 is given, and terminal device 120 can be compiled according to scheduled mapping relations based on the modulation received
Code scheme determines other Modulation and Coding Scheme.
It should be appreciated that embodiment according to Fig.2, terminal device 120 utilizes at least two different modulating-coding sides
Case in the initial subframe and its subsequent subframe in multiple uplink subframes, carries out uplink transmission.Therefore, terminal
Equipment 120 is not necessarily to prepare the uplink transmission block of multiple versions, thus when reducing implementation complexity and the processing of terminal device 120
Prolong.In certain embodiments, terminal device 120 can be compiled according to identified modulation code configuration using at least two modulation
A scheduled low-order-modulated encoding scheme in code scheme, carries out uplink in initial subframe relevant to initial position
Transmission, to improve the uplink receiving success rate for being directed to initial subframe at the network equipment 110.
Fig. 3 shows the flow chart for the exemplary method of some embodiments according to the disclosure implemented at terminal device.
In the following description, method 300 shown in Fig. 3 are described using terminal device 120 as example.It should be understood that method 300
It can be executed for example at terminal device 130 or other equipment appropriate.
As shown in figure 3, terminal device 120 determines multiple uplink subframes for unlicensed band communication in frame 310
Modulation code configuration.The modulation code configuration includes at least two different Modulation and Coding Scheme, and the modulating-coding is matched
Set Modulation and Coding Scheme of the instruction for each subframe in multiple uplink subframes.
In certain embodiments, terminal device 120 can receive a signaling (referred to as " the first letter from the network equipment 110
Enable "), which carries the configuration information about two Modulation and Coding Scheme.Terminal device 120 is believed from first received
It enables and determines that two Modulation and Coding Scheme for modulation code configuration (are referred to as " the first Modulation and Coding Scheme " and " second
Modulation and Coding Scheme ").As an example, first signaling can be the Downlink Control Information in Physical Downlink Control Channel
(DCI), media intervention control (MAC) control unit (CE) and such as wireless heterogeneous networks (RRC) signaling contour level signaling.
In addition to it is above-mentioned explicitly obtain the first Modulation and Coding Scheme and the second Modulation and Coding Scheme other than, terminal device
120 are also based on certain implicit to determine the second Modulation and Coding Scheme according to the first Modulation and Coding Scheme.In certain realities
It applies in example, terminal device 120 can receive another signaling (referred to as " the second signaling ") from the network equipment 110, which takes
Information of the band about the first Modulation and Coding Scheme.Terminal device 120 can therefrom determine first based on the second signaling received
Modulation and Coding Scheme.According to determining the first Modulation and Coding Scheme and the first Modulation and Coding Scheme and the second Modulation and Coding Scheme
Between a mapping relations (referred to as " the first mapping relations "), terminal device 120 can determine second Modulation and Coding Scheme.
As an example, second signaling, which is also possible to Downlink Control Information, media in Physical Downlink Control Channel, intervenes control control
Unit and such as radio resource control signaling contour level signaling.
As an example, the first mapping relations between first Modulation and Coding Scheme and the second Modulation and Coding Scheme can be by
Table 1 provides.In table 1, IMCSIndicate the index of the first Modulation and Coding Scheme, and I 'MCSIndicate the second Modulation and Coding Scheme
Index.
Without loss of generality, it is assumed that terminal device 120 determines that the index of the first Modulation and Coding Scheme is from the second signaling
10, then it can determine that the index of the second Modulation and Coding Scheme is 7 according to 1 terminal device 120 of table.Pass through the first mapping in table 1
Relationship, terminal device 120 can determine the second Modulation and Coding Scheme compared to the first Modulation and Coding Scheme more low order, i.e., second
The code efficiency and order of modulation of a Modulation and Coding Scheme are smaller.Particularly as example, terminal device 120 can should
Second Modulation and Coding Scheme of low order is used for the transmission of initial subframe, and the probability that the network equipment 110 is properly received can be improved in this.
It is provided it should be appreciated that these numerical value in table 1 are merely exemplary, and does not imply that any restrictions for disclosure range.
Table 1
| IMCS | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| I′MCS | 0 | 0 | 0 | 1 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| IMCS | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
| I′MCS | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 29 | 30 | 31 |
In certain embodiments, terminal device 120 can also receive another signaling (referred to as " third letter from the network equipment 110
Enable ").Based on the third signaling received, terminal device 120 can therefrom determine the first Modulation and Coding Scheme.According to determining
The first Modulation and Coding Scheme and the first Modulation and Coding Scheme and the second Modulation and Coding Scheme in terms of transport block size index
Another mapping relations (referred to as " the second mapping relations "), terminal device 120 can determine second Modulation and Coding Scheme
Transport block size index.It is indexed according to identified transport block size, terminal device 120 can be determined according to scheduled rule
Second Modulation and Coding Scheme.For example, the third signaling can be the bottoms signaling such as physical layer and media intervention control layer, or
Such as radio resource control signaling contour level signaling.
As an example, the between the transport block size of first Modulation and Coding Scheme and the second Modulation and Coding Scheme index
Two mapping relations can be provided by table 2.In table 2, IMCSIndicate the index of the first Modulation and Coding Scheme, and I 'TBSIndicate the
The index of the corresponding transport block size of two Modulation and Coding Scheme.For example, if terminal device 120 determines first from third signaling
The index of Modulation and Coding Scheme is 10, then the transmission block ruler of the second Modulation and Coding Scheme can be determined according to 1 terminal device 120 of table
Very little index is 6.Based on transport block size index 6, terminal device 120 can be indexed according to such as transport block size and modulating-coding
Corresponding relationship between scheme, to determine the concrete configuration of the second Modulation and Coding Scheme.It should be appreciated that these numerical value in table 2
Also merely exemplary to provide, and do not imply that any restrictions for disclosure range.
Table 2
| IMCS | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| I′TBS | 0 | 0 | 0 | 1 | 1 | 2 | 3 | 4 | 5 | 6 | 6 | 7 | 8 | 9 | 10 | 11 |
| IMCS | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
| I′TBS | 12 | 12 | 13 | 14 | 15 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
In certain embodiments, terminal device 120 can also receive another signaling the (the referred to as the " the 4th from the network equipment 110
Signaling ").According to the 4th signaling received, terminal device 120 can be determined in multiple uplink subframe, with second
The corresponding uplink subframe of Modulation and Coding Scheme.Based on the 4th signaling received, terminal device can also implicitly be known
Dawn uses the first Modulation and Coding Scheme in which uplink subframe.As an example, the second Modulation and Coding Scheme can be phase
Than in the Modulation and Coding Scheme of the first Modulation and Coding Scheme more low order.Terminal device 120 will be in above-mentioned and the second modulating-coding side
In the corresponding uplink subframe of case, uplink is carried out using the second Modulation and Coding Scheme.In addition, terminal device 120 will be
In other sub-frame of uplink except uplink subframe corresponding with the second Modulation and Coding Scheme, using the first Modulation and Coding Scheme
To carry out uplink.
Referring still to Fig. 3, in frame 320, terminal device 120 is determined from multiple uplink subframes and is passed for uplink
Defeated initial position.The initial position instruction terminal equipment 120 carries out uplink transmission since which time-domain position.As
Example, the initial position can be associated with a transmission symbol of a subframe in multiple uplink subframes.For example, initial
It position can be associated with No. 0 in a subframe and No. 7 orthogonal frequency division multiplexing (OFDM) symbol.In such case
Under, terminal device 120 can in a subframe No. 0 OFDM symbol or No. 7 OFDM symbol start carry out uplink
Road transmission.
In certain embodiments, terminal device 120 can measure in unlicensed band in multiple uplink subframes
Signal energy.It is lower than threshold energy in response to the signal energy measured, terminal device 120 determines in this case multiple
The time-domain position of OFDM symbol in uplink subframe, and the initial bit in multiple uplink subframes is determined based on this
It sets.
For example, being the situation of No. 0 and No. 7 OFDM symbol for initial position, if terminal device 120 is at one
Determine that the signal energy measured in unlicensed band is lower than threshold energy before No. 0 OFDM symbol of subframe, then terminal device
120 can be using No. 0 OFDM symbol as initial position.Particularly, such case has corresponded to the uplink transmission of whole frame.?
In this case, terminal device 120 does not need to carry out any punching processing to transmission block.If terminal device 120 is in a son
After No. 0 OFDM symbol of frame, determine the signal energy measured in unlicensed band lower than threshold value before No. 7 OFDM symbol
Energy, then terminal device 120 can be using No. 7 OFDM symbol as initial position.Such case has corresponded to the upper of half of subframe
Uplink transmission, i.e. terminal device 120 may need that the part punching of first half subframe will be corresponded in transmission block, and only transmit
Data in transmission block corresponding to later half a subframe.
In frame 330, modulating-coding of the terminal device 120 based on initial position and for multiple uplink subframes is matched
It sets, starts to execute uplink transmission.
In certain embodiments, terminal device 120 can be received from the network equipment 110 for the multiple of uplink transmission
The configuration of uplink subframe, the configuration instruction terminal device 120 can be attempted to access non-award in which uplink subframe
Frequency band is weighed, to carry out uplink transmission.
In certain embodiments, terminal device 120 can be associated with initial position in multiple uplink subframes
In initial uplink subframe, uplink transmission is executed using the second Modulation and Coding Scheme.As described above, it depends on just
Beginning position, initial uplink subframe may be incomplete subframe.In this case, terminal device 120 is needed to initial
The part of transmission block in uplink subframe is punched (puncturing), i.e., it is initial for example to abandon this for terminal device 120
The part of the transmission block in OFDM symbol in uplink subframe before initial position, this may cause at the network equipment 110
Higher uplink error rate.
Therefore, as an example, compared to the first Modulation and Coding Scheme, the second Modulation and Coding Scheme can be scheduled, more
The Modulation and Coding Scheme of low order, i.e. the second Modulation and Coding Scheme can be imitated using the modulation system and lower coding of more low order
Rate.As an example, second Modulation and Coding Scheme can pass through in the case where considering desired uplink transmission error rates
Link level, system integration project are now netted the modes such as test and are determined in advance, and are explicitly sent to terminal device
120.As another example, as described above, second Modulation and Coding Scheme can also by the first Modulation and Coding Scheme by
Implicitly determine.
In the subframe after initial uplink subframe, terminal device 120 can use the first Modulation and Coding Scheme
Execute uplink transmission.Since the subframe after initial uplink subframe is complete uplink subframe, eventually
End equipment 120 can carry out uplink transmission using the first conventional Modulation and Coding Scheme.
By method 300 shown in Fig. 3, terminal device 120 can be using including at least two different modulating-coding sides
The modulation code configuration of case, to carry out uplink transmission.Particularly, in some embodiments, terminal device 120 can use
Scheduled, low order the second Modulation and Coding Scheme carries out uplink transmission in initial subframe since initial position, this can
To improve the uplink receiving success rate of the network equipment 110 and improve the efficiency of transmission of unlicensed band communication system.
Fig. 4 shows the process for the exemplary method 400 of some embodiments according to the disclosure implemented at the network equipment
Figure.Method 400 shown in Fig. 4 can execute for example at the network equipment 110 or other equipment appropriate.
In frame 410, the network equipment 110 determines the modulating-coding of multiple uplink subframes for unlicensed band communication
Configuration, modulation code configuration instruction are used at least two different Modulation and Coding Scheme of multiple uplink subframes, such as
First Modulation and Coding Scheme and the second Modulation and Coding Scheme described above.
In certain embodiments, the network equipment 110 can send the first signaling to terminal device 120, which refers to
Show the first Modulation and Coding Scheme and the second Modulation and Coding Scheme.In certain embodiments, the network equipment 110 can be set to terminal
Standby 120 send the second signaling, which only indicates the first Modulation and Coding Scheme.In addition, the network equipment 110 can also be to end
End equipment 120 sends the first mapping relations and/or the first modulation between the first Modulation and Coding Scheme and the second Modulation and Coding Scheme
Encoding scheme and second mapping relations of second Modulation and Coding Scheme in terms of transport block size index.About the first mapping relations
With the specific implementation of the second mapping relations, description above can be referred in conjunction with Fig. 3.
In certain embodiments, the network equipment 110 can also send the 4th signaling, the 4th signaling to terminal device 120
Indicate uplink subframe corresponding with second Modulation and Coding Scheme in multiple uplink subframes.As described above, base
In the 4th signaling, terminal device 120, can be in addition to that can determine the uplink subframe using the second Modulation and Coding Scheme
It implicitly determines and uses the first Modulation and Coding Scheme in which subframe.About the detail of the 4th signaling, Fig. 3 can be combined
To refer to description above.
In frame 420, the network equipment 110 is determined from multiple uplink subframes for from terminal device 120 to the network
The initial position of the uplink transmission of equipment 110.As an example, being No. 0 OFDM symbol in a subframe for initial position
Number and the case where No. 7 OFDM symbol, the network equipment 110 can for example pass through detection first half subframe (that is, first time slot)
In such as demodulated reference signal (DMRS) etc signal specific pattern, to determine the practical initial bit of uplink transmission
It sets.
In frame 430, it is based on the modulation code configuration and the initial position, the network equipment 110 receives the uplink and passes
It is defeated.In certain embodiments, the network equipment 110 can be associated with the initial position initial in multiple uplink subframes
In uplink subframe, the second Modulation and Coding Scheme is started with from initial position, receives uplink transmission.It is initial at this
In subframe after uplink subframe, the network equipment 110 can use the first Modulation and Coding Scheme, receive uplink biography
It is defeated.
Fig. 5 A and 5B respectively illustrate the schematic diagram of the uplink transmission process of some embodiments according to the disclosure.
For convenience of description, it is assumed that the network equipment 110 and terminal device 120 are in unlicensed band progress uplink communication.It should be appreciated that Fig. 5 A
And embodiment shown in 5B may include any number of network equipment and terminal device, the scope of the present disclosure is square herein
Face is unrestricted.
In certain embodiments, the network equipment 110 configures multiple from primary uplink (AUL) subframe for terminal device 120.
As shown in Figure 5A, multiple AUL subframes for uplink transmission can be No. 0 to the 2nd work song frame and No. 6 to the 9th
Work song frame.It should be appreciated that above-mentioned sub-frame configuration is merely possible to example and provides, and do not imply that for any of disclosure range
Limitation.
In data preparation stage, terminal device 120 is used for multiple uplinks according to above-mentioned AUL sub-frame configuration and determination
The modulation code configuration of way frame, to prepare four transmission blocks for No. 6 to the 9th work song frame.As an example, the network equipment
110 can with configurating terminal device 120 the 6th work song frame use low order Modulation and Coding Scheme, i.e. the second Modulation and Coding Scheme, and
At No. 7 to the 9th work song frame using conventional Modulation and Coding Scheme, i.e. the first Modulation and Coding Scheme, to be respectively formed in Fig. 5 A
The transmission block for four subframes that " 1 ", " 2 ", " 3 ", " 4 " are identified (is referred to as " No. 1 transmission block ", " No. 2 transmission
Block ", " No. 3 transmission block " and " No. 4 transmission block ").
The stage is transmitted in uplink, terminal device 120 is for example, by execution " listem-before-talk " process, to determine on multiple
Initial position in uplink subframe.Assuming that measurement result of the terminal device 120 according to " listem-before-talk " process, determines the 8th
One initial position of work song frame (that is, initial subframe), and the initial position is, for example, and No. 7 OFDM in the initial subframe
The corresponding time-domain position of symbol.Terminal device 120 is punched for No. 1 transmission block, and in the 8th work song frame, from first
Beginning position starts to transmit through the remaining data in No. 1 transmission block that punch that treated.Due to No. 1 transmission block can use it is low
Second Modulation and Coding Scheme of rank, therefore, even if the network equipment 110 is also likely to just in the case where the transmission block is perforated
The transmission of the initial subframe is really received, to improve the success rate of uplink transmission.
Fig. 5 B shows another illustrative uplink transmission process.In this transmission process, the network equipment 110
It is configured to the Modulation and Coding Scheme of each subframe in multiple AUL subframes, and these Modulation and Coding Scheme are sent to terminal
Equipment 120.After determining that initial position is position in the 8th work song frame, terminal device 120 is to corresponding with the 8th work song frame
No. 3 transmission block punched, and the 8th work song frame transmitted since initial position through punching treated No. 3 biography
Defeated piece of remaining data.In this case, since the network equipment 110 knows for No. 6 each subframe into the 9th work song frame
Modulation and Coding Scheme, even if the network equipment 110 can not determine initial position, which can also be directed to subsequent
Subframe is normally decoded according to corresponding Modulation and Coding Scheme, to reduce the uplink receiving complexity of the network equipment 110.
Fig. 6 shows the block diagram of communication equipment 600 according to an embodiment of the present disclosure.Communication equipment 600 can be used to real
The network equipment 110 or terminal device 120,130 in existing embodiment of the disclosure.
As shown in the example in Fig. 6, communication equipment 600 includes processor 610.The operation of the control equipment 600 of processor 610
And function.For example, in certain embodiments, processor 610 can be by means of the finger that is stored in coupled memory 620
630 are enabled to execute various operations.Memory 620 can be any suitable type suitable for local technical environment, and can
Memory device, magnetic memory to be realized using any suitable data storage technology, including but not limited to based on semiconductor
Part and system, light storage device and system.Although illustrate only a memory cell in Fig. 6, in communication equipment 600
In can have multiple physics different memory cell.
Processor 610 can be any suitable type suitable for local technical environment, and may include but unlimited
In general purpose computer, special purpose computer, microcontroller, digital signal controller (DSP) and based on controller multicore control
One or more cores in device framework.Communication equipment 600 also may include multiple processors 610.Processor 610 can also be with receipts
It sends out device 640 to couple, transceiver 640 can realize the reception of information by means of one or more antennas 650 and/or other component
And transmission.
In accordance with an embodiment of the present disclosure, processor 610 and memory 620 can be with compounding practices, to realize above with reference to Fig. 3
And/or the method 300 and/or 400 of Fig. 4 description.Specifically, when communication equipment 600 serves as terminal device 120,130, when
When instruction 630 in memory 620 is executed by processor 610,600 execution method 300 of communication equipment can be made.Work as communication equipment
600 when serving as the network equipment 110, when the instruction 630 in memory 620 is executed by processor 610, can make communication equipment 600
Execution method 400.It will be understood that above-described all features are suitable for communication equipment 600, details are not described herein.
In general, the various example embodiments of the disclosure can hardware or special circuit, software, logic or its
What implement in combination.Some aspects can be implemented within hardware, and other aspects can by controller, microprocessor or
Other are calculated implements in the firmware or software that equipment executes.When the various aspects of embodiment of the disclosure are illustrated or described as frame
When figure, flow chart or other certain graphical representations of use, it will be understood that box described herein, device, system, techniques or methods can
Using as unrestricted example in hardware, software, firmware, special circuit or logic, common hardware or controller or other in terms of
It calculates and implements in equipment or its certain combination.
As an example, embodiment of the disclosure can also be described in the context of machine-executable instruction, machine can
Execute instruction such as includes in the program module executed in the device on the true or virtual processor of target.It is general and
Speech, program module include routine, program, library, object, class, component, data structure etc., execute specific task or realization
Specific abstract data structure.In embodiments, the function of program module can merge between described program module
Or segmentation.Machine-executable instruction for program module can execute in local or distributed apparatus.In distribution
In equipment, program module can be located locally in remote medium storage the two.
The computer program code of method used to implement the present disclosure can be write with one or more programming languages.These
Computer program code can be supplied to the processing of general purpose computer, special purpose computer or other programmable data processing units
Device so that program code when being executed by computer or other programmable data processing units, cause flow chart and/
Or function/operation specified in block diagram is carried out.Program code can completely on computers, part on computers, conduct
Independent software package, part are on computers and part is held on a remote computer or server on the remote computer or completely
Row.
In the context of the disclosure, machine readable media can be include or storage be used for or about instruction execution system
Any tangible medium of the program of system, device or equipment.Machine readable media can be machine-readable signal medium or machine can
Read storage medium.Machine readable media can include but is not limited to electronics, magnetic, it is optical, electromagnetism, infrared or partly lead
Body system, device or equipment equipment or its any appropriate combination.The more detailed example of machine readable storage medium includes having one
Or the electrical connection of multiple conducting wires, portable computer diskette, hard disk, random access memories (RAM), read-only memory
(ROM), Erasable Programmable Read Only Memory EPROM (EPROM or flash memory), light storage device, magnetic storage apparatus or its is any appropriate
Combination.
In addition, although operation is depicted with particular order, this simultaneously should not be construed and require this generic operation to show
Particular order is completed with sequential order, or executes the operation of all diagrams to obtain expected result.In some cases, more
Task or parallel processing can be beneficial.Similarly, although discussed above contain certain specific implementation details, this is not
It should be interpreted that any invention of limitation or the scope of the claims, and should be interpreted that the specific embodiment that can be directed to specific invention
Description.Certain features described in the context of separated embodiment can also be with combined implementation single real in this specification
It applies in example.Conversely, the various features described in the context of single embodiment can also discretely multiple embodiments or
Implement in any appropriate sub-portfolio.
Although with specific to the language description of structural features and or methods of action theme, but it is to be understood that institute
The theme limited in attached claim is not limited to above-described special characteristic or movement.On the contrary, above-described specific spy
Movement of seeking peace is disclosed as the exemplary forms for realizing claim.
Claims (28)
1. a kind of method realized at terminal device, comprising:
Determine that the modulation code configuration of multiple uplink subframes for unlicensed band communication, the modulation code configuration refer to
Show at least two different Modulation and Coding Scheme for the multiple uplink subframe；
It is determined from the multiple uplink subframe for the uplink transmission from the terminal device to the network equipment
Initial position；And
Based on the initial position and the modulation code configuration, the uplink transmission is executed.
2. according to the method described in claim 1, wherein determining that the modulation code configuration includes:
The first signaling is received from the network equipment；And
The first Modulation and Coding Scheme and the second Modulation and Coding Scheme different from each other are determined from first signaling received.
3. according to the method described in claim 1, wherein determining that the modulation code configuration includes:
The second signaling is received from the network equipment；
The first Modulation and Coding Scheme is determined from second signaling received；And
Based on first Modulation and Coding Scheme and first Modulation and Coding Scheme and the second different Modulation and Coding Scheme
Between the first mapping relations, determine second Modulation and Coding Scheme.
4. according to the method described in claim 1, wherein determining that the modulation code configuration includes:
Third signaling is received from the network equipment；
The first Modulation and Coding Scheme is determined from the third signaling received；
Based on first Modulation and Coding Scheme and second Modulation and Coding Scheme different from first Modulation and Coding Scheme
The second mapping relations in terms of transport block size index determine the transport block size index of second Modulation and Coding Scheme；
And
It is indexed based on the determining transport block size, determines second Modulation and Coding Scheme.
5. according to the method described in claim 1, wherein described at least two different Modulation and Coding Scheme include at least first
Modulation and Coding Scheme and the second Modulation and Coding Scheme, and determine that the modulation code configuration includes:
The 4th signaling is received from the network equipment；
From the 4th signaling received, determine in the multiple uplink subframe with the second Modulation and Coding Scheme phase
Corresponding uplink subframe.
6. being transmitted according to the method described in claim 1, wherein determining in the multiple uplink subframe for uplink
Initial position include:
In the multiple uplink subframe, the signal energy in the unlicensed band is measured；And
Signal energy in response to measuring determines the initial bit in the multiple uplink subframe lower than threshold energy
It sets.
7. according to the method described in claim 1, wherein executing the uplink transmission from the terminal device to the network equipment
Include:
In the multiple uplink subframe in initial uplink subframe associated with the initial position, second is utilized
Modulation and Coding Scheme transmits to execute the uplink；And
In the subframe after the initial uplink subframe, the uplink is executed using the first Modulation and Coding Scheme
Transmission.
8. a kind of method for being realized at the network equipment, comprising:
Determine that the modulation code configuration of multiple uplink subframes for unlicensed band communication, the modulation code configuration refer to
Show at least two different Modulation and Coding Scheme for the multiple uplink subframe；
It is determined from the multiple uplink subframe for from terminal device to the transmission of the uplink of the network equipment
Initial position；And
Based on the modulation code configuration and the initial position, the uplink transmission is received.
9. according to the method described in claim 8, further include:
The terminal device is sent by the modulation code configuration.
10. according to the method described in claim 9, wherein sending the terminal device for the modulation code configuration and including:
Send the first signaling to the terminal device, first signaling indicate the first Modulation and Coding Scheme different from each other and
Second Modulation and Coding Scheme.
11. according to the method described in claim 9, wherein sending the terminal device for the modulation code configuration and including:
The second signaling is sent to the terminal device, second signaling indicates the first Modulation and Coding Scheme；And
At least one of the following is sent to the terminal device:
First mapping relations between first Modulation and Coding Scheme and the second different Modulation and Coding Scheme, and
First Modulation and Coding Scheme and the second different Modulation and Coding Scheme second reflecting in terms of transport block size index
Penetrate relationship.
12. according to the method described in claim 9, wherein described at least two different Modulation and Coding Scheme include at least first
Modulation and Coding Scheme and the second Modulation and Coding Scheme, and the terminal device packet is sent by the modulation code configuration
It includes:
Third signaling is sent to the terminal device, and the third signaling indicates in the multiple uplink subframe with described the
The corresponding uplink subframe of two Modulation and Coding Scheme.
13. according to the method described in claim 8, wherein receiving the uplink from terminal device to the network equipment
Transmission includes:
In the multiple uplink subframe in initial uplink subframe associated with the initial position, second is utilized
Modulation and Coding Scheme receives the uplink transmission；And
In the subframe after the initial uplink subframe, using the first Modulation and Coding Scheme, the uplink is received
Transmission.
14. a kind of terminal device, comprising:
Processor；And
Memory, the memory are stored with instruction, and described instruction holds the terminal device when being executed by the processor
Action is made, and the movement includes:
Determine that the modulation code configuration of multiple uplink subframes for unlicensed band communication, the modulation code configuration refer to
Show at least two different Modulation and Coding Scheme for the multiple uplink subframe；
It is determined from the multiple uplink subframe for the uplink transmission from the terminal device to the network equipment
Initial position；And
Based on the initial position and the modulation code configuration, the uplink transmission is executed.
15. terminal device according to claim 14, wherein determining that the modulation code configuration includes:
The first signaling is received from the network equipment；And
The first Modulation and Coding Scheme and the second Modulation and Coding Scheme different from each other are determined from first signaling received.
16. terminal device according to claim 14, wherein determining that the modulation code configuration includes:
The second signaling is received from the network equipment；
The first Modulation and Coding Scheme is determined from second signaling received；And
Based on first Modulation and Coding Scheme and first Modulation and Coding Scheme and the second different Modulation and Coding Scheme
Between the first mapping relations, determine second Modulation and Coding Scheme.
17. terminal device according to claim 14, wherein determining that the modulation code configuration includes:
Third signaling is received from the network equipment；
The first Modulation and Coding Scheme is determined from the third signaling received；
Based on first Modulation and Coding Scheme and second Modulation and Coding Scheme different from first Modulation and Coding Scheme
The second mapping relations in terms of transport block size index determine the transport block size index of second Modulation and Coding Scheme；
And
It is indexed based on the determining transport block size, determines second Modulation and Coding Scheme.
18. terminal device according to claim 14, wherein described at least two different Modulation and Coding Scheme at least wrap
The first Modulation and Coding Scheme and the second Modulation and Coding Scheme are included, and determines that the modulation code configuration includes:
The 4th signaling is received from the network equipment；
From the 4th signaling received, determine in the multiple uplink subframe with the second Modulation and Coding Scheme phase
Corresponding uplink subframe.
19. terminal device according to claim 14, wherein determining in the multiple uplink subframe for uplink
Road transmission initial position include:
In the multiple uplink subframe, the signal energy in the unlicensed band is measured；And
Signal energy in response to measuring determines the initial bit in the multiple uplink subframe lower than threshold energy
It sets.
20. terminal device according to claim 14, wherein executing the uplink from the terminal device to the network equipment
It transmits on road
In the multiple uplink subframe in initial uplink subframe associated with the initial position, second is utilized
Modulation and Coding Scheme transmits to execute the uplink；And
In the subframe after the initial uplink subframe, the uplink is executed using the first Modulation and Coding Scheme
Transmission.
21. a kind of network equipment, comprising:
Processor；And
Memory, the memory are stored with instruction, and described instruction holds the network equipment when being executed by the processor
Action is made, and the movement includes:
Determine that the modulation code configuration of multiple uplink subframes for unlicensed band communication, the modulation code configuration refer to
Show at least two different Modulation and Coding Scheme for the multiple uplink subframe；
It is determined from the multiple uplink subframe for from terminal device to the transmission of the uplink of the network equipment
Initial position；And
Based on the modulation code configuration and the initial position, the uplink transmission is received.
22. the network equipment according to claim 21, further includes:
The terminal device is sent by the modulation code configuration.
23. the network equipment according to claim 22, wherein sending the terminal device for the modulation code configuration
Include:
Send the first signaling to the terminal device, first signaling indicate the first Modulation and Coding Scheme different from each other and
Second Modulation and Coding Scheme.
24. the network equipment according to claim 22, wherein sending the terminal device for the modulation code configuration
Include:
The second signaling is sent to the terminal device, second signaling indicates the first Modulation and Coding Scheme；And
At least one of the following is sent to the terminal device:
First mapping relations between first Modulation and Coding Scheme and the second different Modulation and Coding Scheme, and
First Modulation and Coding Scheme and the second different Modulation and Coding Scheme second reflecting in terms of transport block size index
Penetrate relationship.
25. the network equipment according to claim 22, wherein described at least two different Modulation and Coding Scheme at least wrap
The first Modulation and Coding Scheme and the second Modulation and Coding Scheme are included, and sends the terminal for the modulation code configuration and sets
It is standby to include:
The 4th signaling is sent to the terminal device, and the third signaling indicates in the multiple uplink subframe with described the
The corresponding uplink subframe of two Modulation and Coding Scheme.
26. the network equipment according to claim 21, wherein receiving on described from terminal device to the network equipment
Uplink transmission includes:
In initial uplink subframe associated with the initial position in the multiple uplink subframe, is utilized
Two Modulation and Coding Scheme receive the uplink transmission；And
In the subframe after the initial uplink subframe, using the first Modulation and Coding Scheme, the uplink is received
Transmission.
27. a kind of computer readable storage medium, including the program code being stored thereon, said program code is held by device
When row, described device is made to execute method described in any one of -7 according to claim 1.
28. a kind of computer readable storage medium, including the program code being stored thereon, said program code is held by device
When row, described device is made to execute the method according to any one of claim 8-13.
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| CN106716911A (en) * | 2015-03-18 | 2017-05-24 | 华为技术有限公司 | Method and device for data transmission |
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| CN106716911A (en) * | 2015-03-18 | 2017-05-24 | 华为技术有限公司 | Method and device for data transmission |
| CN105307180A (en) * | 2015-09-25 | 2016-02-03 | 宇龙计算机通信科技(深圳)有限公司 | Data transmission method and device based on LAA (Licensed-Assisted Access) system |
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