CN106612166B - A kind of method and apparatus of narrow band transmission - Google Patents
A kind of method and apparatus of narrow band transmission Download PDFInfo
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- CN106612166B CN106612166B CN201510701403.3A CN201510701403A CN106612166B CN 106612166 B CN106612166 B CN 106612166B CN 201510701403 A CN201510701403 A CN 201510701403A CN 106612166 B CN106612166 B CN 106612166B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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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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Abstract
The invention discloses a kind of method and apparatus of narrow band transmission.As one embodiment, UE receives the first signaling in step 1, and the first signaling indicates L narrow-band in system bandwidth.The bandwidth of the narrow-band is no more than the bandwidth of a PRB.L child resource is determined in step 2, the L child resource is the L occupied running time-frequency resource of narrowband signal specific respectively, and L narrowband signal specific is transmitted in the L narrow-band respectively.Wherein, the L is positive integer, and the narrowband signal specific includes the narrow band signal that sends without the scheduling of narrowband physical layer control signaling, and the first signaling is for the ordinary terminal except narrowband terminal.The present invention provides service using idle narrowband resource for ordinary terminal, and flexible dispatching is used for the time quantum of NB-IOT communication in the time domain, adapts to different TBS.In addition, the present invention reduces the payload size of the control signaling for scheduling time unit, efficiency of transmission is improved.
Description
Technical field
The present invention relates to the transmission plans in wireless communication system, more particularly to the cellular network communication of compatible narrow band transmission
Method and apparatus.
Background technique
In 3GPP (3rd Generation Partner Project, third generation cooperative partner program) RAN (Radio
Access Network, wireless access network) in #69 plenary session, NB-IOT (NarrowBand Internet of Things, it is narrow
Band Internet of Things) it is set up the project.NB-IOT supports 3 kinds of different operational modes (RP-151621):
1. independent (Stand-alone) operation, is disposed on the frequency spectrum that GERAN system uses.
2. protection band is run, disposed on the not used resource block in the protection band of LTE carrier wave
3. being disposed on the resource block on LTE carrier wave with interior operation
Further, in NB-IOT, UE (User Equipment, user equipment) supports 180kHz in uplink and downlink
RF (Radio Frequency, radio frequency) bandwidth, i.e. a PRB (Physical Resource Block, Physical Resource Block).
A feature of NB-IOT is that terminal quantity is very huge, therefore, for interior operational mode, LTE carrier wave
In there may be multiple narrowbands for being used for NB-IOT.
Summary of the invention
For with interior operational mode, an intuitive idea is that (i.e. RF ability is more than that the tradition of 180kHz is whole to ordinary terminal
End) signal is not received on NB-IOT frequency band, because ordinary terminal supports more efficient scheduling strategy (such as frequency selectivity tune
Degree, frequency diversity), more fully system information can be received, supports more efficient transmission mode (such as closed-loop MIMO-Multiple
Input Multiple Output).Inventors discovered through research that when the narrowband (band of a corresponding PRB for NB-IOT
It is wide) when quantity is more or the business of NB-IOT is more idle, if ordinary terminal can transmit on the narrowband of NB-IOT
Wireless signal can then effectively improve efficiency of transmission.Inventor through further research, it has been found that, ordinary terminal is in the narrowband of NB-IOT
On the wireless signal that receives or sends may mutually conflict with certain common signals of NB-IOT, and then generate interference.
The present invention, aiming to the above problems, provides solutions.It should be noted that in the absence of conflict, the application
UE (User Equipment, user equipment) in embodiment and embodiment in feature can be applied in base station, it is on the contrary
?.Further, in the absence of conflict, the feature in embodiments herein and embodiment can arbitrarily mutual group
It closes.
A method of in the UE being mutually compatible with narrow band communication, wherein include the following steps:
Step A. receives the first signaling, and the first signaling indicates L narrow-band in system bandwidth.The bandwidth of the narrow-band
The bandwidth of no more than one PRB (Physical Resource Block, Physical Resource Block)
Step B. determines that L child resource, the L child resource are the occupied time-frequency money of L narrowband signal specific respectively
Source, L narrowband signal specific are transmitted in the L narrow-band respectively.
Wherein, the L is positive integer, and the narrowband signal specific includes the scheduling without narrowband physical layer control signaling
And the narrow band signal sent, the first signaling are for the ordinary terminal except narrowband terminal.
In the above method, the UE is ordinary terminal, and the narrow-band is the frequency band for disposing NB-IOT.The above method
Essence be that ordinary terminal identifies the narrow-band in system bandwidth, and then determines the institute of the narrowband signal specific in narrow-band
The resource of occupancy.
The above method ensures that the UE can be avoided and occupies the occupied resource of narrowband signal specific.
As one embodiment, the bandwidth of one PRB is 180kHz (kHz).
As one embodiment, the first signaling identifies L PRB from the corresponding all PRB of system bandwidth, and the L is a
Narrow-band respectively corresponds the L PRB.
As one embodiment, the bandwidth of the system bandwidth is a LTE system bandwidth.
As one embodiment, the first signaling is high-level signaling.
As one embodiment, the first signaling is RRC (Radio Resource Control, wireless resource management) letter
It enables.
As one embodiment, in a PRB pair, the narrowband signal specific occupies PDSCH (Physical
Downlink Shared Channel, Physical Downlink Shared Channel) in portion of time frequency resources.
As one embodiment, in a PRB pair, the narrowband signal specific occupies PUSCH (Physical
Uplink Shared Channel, Physical Uplink Shared Channel) portion of time frequency resources.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
Step C. receives the second signaling, the transmission of the second signaling scheduling target data
Step D. receives target data, and the second signaling is descending scheduling signaling；Or send target data, the second signaling
It is uplink scheduling signaling.
Wherein, the second signaling is for the ordinary terminal except narrowband terminal.
As one embodiment, running time-frequency resource scheduled in the second signaling and the L child resource have overlapping, the target
The occupied running time-frequency resource of data is the time-frequency money among running time-frequency resource scheduled in the second signaling and except the L child resource
Source.
As one embodiment, running time-frequency resource scheduled in the second signaling includes among Q narrow-band the and described L son
Running time-frequency resource except resource, the occupied running time-frequency resource of target data are running time-frequency resource scheduled in the second signaling, institute
State the subset that Q narrow-band is the L narrow-band.
Running time-frequency resource scheduled in second signaling is for common UE.Above-mentioned aspect and embodiment ensure common UE
Interference is not generated mutually between narrowband signal specific.Further, it is contemplated that scheduler latency (the i.e. narrowband physics of narrow band signal
Layer control signaling is to the delay between the data accordingly dispatched) it is typically larger than the scheduler latency of common UE, base station can be sent out in time
The narrow-band resource for sending the second signaling scheduling to be not used by, improves efficiency of transmission.
As one embodiment, running time-frequency resource scheduled in second signaling is according to traditional LTE standard, the second signaling
Scheduled can be used for transmission PDSCH's (Physical Downlink Shared Channel, Physical Downlink Shared Channel)
RE。
As one embodiment, running time-frequency resource scheduled in second signaling is according to traditional LTE standard, the second signaling
The scheduled RE that can be used for transmission PUSCH.
Specifically, according to an aspect of the present invention, which is characterized in that the step includes the following steps:
Step B1. receives L narrow band information in the L narrow-band respectively, is distinguished according to the L narrow band information
Determine the L child resource.
Wherein, the narrow band information includes that { narrow band sync sequence, Narrowcasting signaling, narrowband reference signal, narrowband are high-rise
Signaling } one of or it is a variety of.
As one embodiment, the narrow band sync sequence include { ZadoffChu sequence, pseudo-random sequence } at least
One of.
As one embodiment, the carrying logic channel of the Narrowcasting signaling is BCCH.
As one embodiment, the carrying transmission channel of the Narrowcasting signaling is DL-SCH.
As one embodiment, the Narrowcasting signaling include { index of current narrowband frame, system information } in extremely
One of few, the narrowband frame is made of positive integer LTE subframe.As one embodiment, the narrowband frame is LTE radio frames.
Specifically, according to an aspect of the present invention, which is characterized in that the step includes the following steps:
Step B2. receives third signaling, determines the L child resource according to third signaling.
Wherein, third signaling is for the ordinary terminal except narrowband terminal.
Specifically, according to an aspect of the present invention, which is characterized in that the narrowband signal specific includes { narrowband physics
Layer control signaling, narrow band sync sequence, Narrowcasting signaling, narrowband reference signal, uplink random access sequence at least it
One.
As one embodiment, the uplink random access sequence includes ZadoffChu sequence.
As one embodiment, the narrowband reference signal is that cell is public, all in cell can have NB-IOT
UE be received.
The invention discloses a kind of methods in base station being mutually compatible with narrow band communication, wherein includes the following steps:
Step A. sends the first signaling, and the first signaling indicates L narrow-band in system bandwidth.The bandwidth of the narrow-band
No more than the bandwidth of a PRB
Step B. indicates that L child resource, the L child resource are the occupied time-frequency money of L narrowband signal specific respectively
Source, L narrowband signal specific are transmitted in the L narrow-band respectively.
Wherein, the L is positive integer, and the narrowband signal specific includes the scheduling without narrowband physical layer control signaling
And the narrow band signal sent, the first signaling are for the ordinary terminal except narrowband terminal.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
Step C. sends the second signaling, the transmission of the second signaling scheduling target data
Step D. sends target data, and the second signaling is descending scheduling signaling；Or receive target data, the second signaling
It is uplink scheduling signaling.
Wherein, the second signaling is for the ordinary terminal except narrowband terminal.
As one embodiment, running time-frequency resource scheduled in the second signaling and the L child resource have overlapping, the target
The occupied running time-frequency resource of data is the time-frequency money among running time-frequency resource scheduled in the second signaling and except the L child resource
Source.
As one embodiment, running time-frequency resource scheduled in the second signaling includes among Q narrow-band the and described L son
Running time-frequency resource except resource, the occupied running time-frequency resource of target data are running time-frequency resource scheduled in the second signaling, institute
State the subset that Q narrow-band is the L narrow-band.
Specifically, according to an aspect of the present invention, which is characterized in that the step includes the following steps:
Step B1. sends L narrow band information respectively in the L narrow-band, and the L narrow band information indicates respectively
The L child resource.
Wherein, the narrow band information includes that { narrow band sync sequence, Narrowcasting signaling, narrowband reference signal, narrowband are high-rise
Signaling } one of or it is a variety of.
Specifically, according to an aspect of the present invention, which is characterized in that the step includes the following steps:
Step B2. sends third signaling, and third signaling indicates the L child resource.
Wherein, third signaling is for the ordinary terminal except narrowband terminal.
Specifically, according to an aspect of the present invention, which is characterized in that the narrowband signal specific includes { narrowband physics
Layer control signaling, narrow band sync sequence, Narrowcasting signaling, narrowband reference signal, uplink random access sequence at least it
One.
The invention discloses a kind of user equipmenies being mutually compatible with narrow band communication, wherein including following module:
First module: for receiving the first signaling, the first signaling indicates L narrow-band in system bandwidth.The narrow-band
Bandwidth be no more than a PRB bandwidth
Second module: for determining that L child resource, the L child resource are that L narrowband signal specific is occupied respectively
Running time-frequency resource, L narrowband signal specific are transmitted in the L narrow-band respectively.
Third module: for receiving the second signaling, the transmission of the second signaling scheduling target data
4th module: for receiving target data, the second signaling is descending scheduling signaling；Or target data is sent, the
Two signalings are uplink scheduling signalings.
Wherein, the L is positive integer, and the narrowband signal specific includes the scheduling without narrowband physical layer control signaling
And the narrow band signal sent, the first signaling are for the ordinary terminal except narrowband terminal.Second signaling is whole for narrowband
Ordinary terminal except end.Running time-frequency resource scheduled in second signaling and the L child resource have overlapping, the target data
Occupied running time-frequency resource is the running time-frequency resource among running time-frequency resource scheduled in the second signaling and except the L child resource；
Or second running time-frequency resource scheduled in signaling include running time-frequency resource except among Q narrow-band the and described L child resource,
The occupied running time-frequency resource of target data is running time-frequency resource scheduled in the second signaling, and the Q narrow-band is the L
The subset of narrow-band.
As one embodiment, above-mentioned user equipment is characterized in that, the second module is used for following one:
- receives L narrow band information in the L narrow-band respectively, determines institute respectively according to the L narrow band information
State L child resource
- receives third signaling, determines the L child resource according to third signaling.
Wherein, the narrow band information includes that { narrow band sync sequence, Narrowcasting signaling, narrowband reference signal, narrowband are high-rise
Signaling } one of or it is a variety of, third signaling is for the ordinary terminal except narrowband terminal.
The invention discloses a kind of base station equipments being mutually compatible with narrow band communication, wherein including following module:
First module: for sending the first signaling, the first signaling indicates L narrow-band in system bandwidth.The narrow-band
Bandwidth be no more than a PRB bandwidth
Second module: being used to indicate L child resource, and the L child resource is that L narrowband signal specific is occupied respectively
Running time-frequency resource, L narrowband signal specific are transmitted in the L narrow-band respectively.
Third module: for sending the second signaling, the transmission of the second signaling scheduling target data
4th module: for sending target data, the second signaling is descending scheduling signaling；Or target data is received, the
Two signalings are uplink scheduling signalings.
Wherein, the L is positive integer, and the narrowband signal specific includes the scheduling without narrowband physical layer control signaling
And the narrow band signal sent, the first signaling are for the ordinary terminal except narrowband terminal.Second signaling is whole for narrowband
Ordinary terminal except end.Running time-frequency resource scheduled in second signaling and the L child resource have overlapping, the target data
Occupied running time-frequency resource is the running time-frequency resource among running time-frequency resource scheduled in the second signaling and except the L child resource；
Or second running time-frequency resource scheduled in signaling include running time-frequency resource except among Q narrow-band the and described L child resource,
The occupied running time-frequency resource of target data is running time-frequency resource scheduled in the second signaling, and the Q narrow-band is the L
The subset of narrow-band.
As one embodiment, above-mentioned base station equipment is characterized in that, the second module is used for following one:
- sends L narrow band information respectively in the L narrow-band, and the L narrow band information indicates respectively the L
Child resource
- sends third signaling, and third signaling indicates the L child resource.
Wherein, the narrow band information includes that { narrow band sync sequence, Narrowcasting signaling, narrowband reference signal, narrowband are high-rise
Signaling } one of or it is a variety of, third signaling is for the ordinary terminal except narrowband terminal.
Compared to existing public technology, the present invention has following technical advantage:
- provides service using idle narrowband resource for ordinary terminal
Flexible dispatching is used for the time quantum that NB-IOT is communicated to-in the time domain, adapts to different TBS (Transport
Block Size, transport block size)
- reduces the payload size of the control signaling for scheduling time unit, improves efficiency of transmission.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent:
Fig. 1 shows the flow chart that ordinary terminal according to an embodiment of the invention occupies narrowband resource；
Fig. 2 shows downlink narrowband according to an embodiment of the invention signal specifics to occupy inside a PRB pair
The schematic diagram of all running time-frequency resources that can be used for PDSCH；
Fig. 3 shows narrowband signal specific according to an embodiment of the invention in a PRB pair (Pair)
Inside occupies the schematic diagram that part can be used for the running time-frequency resource of PUSCH；
Fig. 4 shows narrowband signal specific according to an embodiment of the invention and occupies part inside a PRB pair
It can be used for the schematic diagram of the running time-frequency resource of PDSCH；
Fig. 5 shows time of the downlink narrowband according to an embodiment of the invention signal specific inside a PRB pair
Select the schematic diagram of running time-frequency resource；
Fig. 6 shows the structural block diagram of the processing unit in UE according to an embodiment of the invention；
Fig. 7 shows the structural block diagram of the processing unit in base station according to an embodiment of the invention；
Fig. 8 shows in system bandwidth according to an embodiment of the invention that there are the schematic diagrames of 2 narrow-bands；
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with attached drawing, it should be noted that do not rushing
In the case where prominent, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.
Embodiment 1
Embodiment 1 illustrates the flow chart that ordinary terminal occupies narrowband resource, as shown in Fig. 1.In attached drawing 1, base station N1
The step of being the maintenance base station of the serving cell of UE U2, identifying in box F1 and F2, does not occur simultaneously.The step identified in box F1
It is rapid to occur and do not occur the step of mark in box F2；Or the step that the step of identifying in box F2 occurs and identifies in box F1
Suddenly do not occur.UE U2 is common UE (non-narrowband UE), i.e. RF ability is more than 180kHz.
ForBase station N1, the first signaling is sent in step s101, and the first signaling indicates L narrow-band in system bandwidth.
The bandwidth of the narrow-band is no more than the bandwidth of a PRB.Send L respectively in the L narrow-band in step s 102
Narrow band information, or send third signaling.The second signaling, the biography of the second signaling scheduling target data are sent in step s 103
It is defeated.If the second signaling is descending scheduling signaling, base station N1 sends target data in step S104；On if the second signaling is
Row dispatch, base station N1 receive target data in step s105.
ForUE U2, the first signaling is received in step s 201.In step S202 in the L narrow-band respectively
L narrow band information is received, or receives third signaling.The second signaling is received in step S203.If the second signaling is downlink
Dispatch, UE U2 receive target data in step S204；If the second signaling is uplink scheduling signaling, UE U2 is in step
Target data is sent in S205.
In embodiment 1, the L is positive integer, and the narrowband signal specific includes without narrowband physical layer control signaling
Scheduling and the narrow band signal that sends, the first signaling are for the ordinary terminal except narrowband terminal.The L narrow band information
Indicate respectively the L child resource, third signaling indicates the L child resource.The narrow band information includes { narrow band sync sequence
Column, Narrowcasting signaling, narrowband reference signal, narrowband high-level signaling } one of or it is a variety of, third signaling is whole for narrowband
Ordinary terminal except end.The L child resource is the L occupied running time-frequency resource of narrowband signal specific respectively, and the L is a
Narrowband signal specific is transmitted in the L narrow-band respectively.Second signaling is for the ordinary terminal except narrowband terminal.
Running time-frequency resource scheduled in second signaling and the L child resource have overlapping, and the occupied running time-frequency resource of target data is
Running time-frequency resource among running time-frequency resource scheduled in second signaling and except the L child resource；Or second scheduled in signaling
Running time-frequency resource include running time-frequency resource except among Q narrow-band the and described L child resource, occupied by the target data
Running time-frequency resource be running time-frequency resource scheduled in the second signaling, the Q narrow-band is the subset of the L narrow-band.
As the sub- embodiment 1 of embodiment 1, the narrowband signal specific further includes by narrowband physical layer control signaling
Semi-persistent scheduling and the narrow band signal sent
As the sub- embodiment 2 of embodiment 1, the second signaling be DCI (Downlink Control Information, under
One of row control information) format { 0,1,1a, 1b, 1c, 1d, 2,2a, 2b, 2c, 2d, 4 }.
As the sub- embodiment 3 of embodiment 1, the first signaling is RRC common signaling or system information block (System
Information Block) in IE (Information Element, information unit).
As the sub- embodiment 4 of embodiment 1, the L is greater than 1.
Embodiment 2
Embodiment 2 illustrates downlink narrowband signal specific and occupies all time-frequencies that can be used for PDSCH inside a PRB pair
The schematic diagram of resource, as shown in Fig. 2.In attached drawing 2, the grid of oblique line mark is the occupied time-frequency money of narrowband signal specific
Source, the grid of backslash mark are the occupied running time-frequency resources of target data, and the grid of grey filling is broadband PDCCH
(Physical Downlink Control Channel, Physical Downlink Control Channel) occupied running time-frequency resource, thick line collimation mark
The grid of knowledge is running time-frequency resource scheduled in the second signaling.
In embodiment 2, the second signaling is descending scheduling signaling, and { 0,1,2,3 ..., 8 } respectively correspond 9 LTE (Long
Term Evolution, long term evolution) subframe, the second signaling transmits on PDCCH, the second signaling to scheduled running time-frequency resource
Relationship as shown in arrow R3.Running time-frequency resource scheduled in second signaling and the occupied running time-frequency resource of narrowband signal specific have weight
Folded-such as oblique line identifies, and the occupied running time-frequency resource of target data is among running time-frequency resource scheduled in the second signaling and narrow
It is identified with such as backslash of the running time-frequency resource-except the occupied running time-frequency resource of signal specific.
As the sub- embodiment 1 of embodiment 2, the narrowband signal specific includes that { narrowband physical layer control signaling, narrowband are same
One of step sequence, Narrowcasting signaling }.
As the sub- embodiment 2 of embodiment 2, PRB pair scheduled in the second signaling is continuous multiple PRB on frequency domain
It is right, and the occupied PRB pair of narrowband signal specific is a PRB pair (the i.e. center frequency on non-boundary in the multiple PRB pair
Rate is not highest nor minimum in the centre frequency of the multiple PRB pair).The advantages of embodiment is, completely
The resource distribution mode of compatible existing continuous P RB scheduling, does not influence dispatching flexibility because of narrow band transmission.
As the sub- embodiment 3 of embodiment 2, minimum frequency domain unit scheduled in the second signaling is a RBG (Resource
Block Group, resource block group), and the occupied PRB pair of narrowband signal specific is a PRB on non-boundary in RBG
It is right.The advantages of embodiment, is, completely compatible existing using RBG as the resource distribution mode of smallest particles degree, not because narrowband passes
It is defeated and influence dispatching flexibility (such as avoiding dispatching corresponding RBG).
Embodiment 3
Embodiment 3 illustrates narrowband signal specific and occupies the running time-frequency resource that part can be used for PUSCH inside a PRB pair
Schematic diagram, as shown in Fig. 3.In attached drawing 3, the grid of oblique line mark is the occupied running time-frequency resource of narrowband signal specific, instead
The grid of oblique line mark is the occupied running time-frequency resource of target data, when the grid of bold box mark is scheduled in the second signaling
Frequency resource.
In embodiment 3, the second signaling is uplink scheduling signaling, and the subcarrier spacing that narrowband uplink communication uses is 2.5kHz
(subcarrier spacing in the corresponding system bandwidth of broadband connections is 15kHz), correspondingly, a narrow band communication subframe is 6 corresponding
LTE subframe.
In embodiment 3, although narrowband signal specific has only taken up a part of narrowband frequency domain resource, occupied by target data
Running time-frequency resource be the part removed in running time-frequency resource scheduled in the second signaling except whole narrowbands frequency domain resources.The reason is that narrow
Subcarrier spacing with uplink and broadband upstream is incompatible.
As the sub- embodiment 1 of embodiment 3, the narrowband signal specific includes { narrowband upstream data, narrowband random access
At least one of sequence, narrowband physical layer uplink control channel }.
Embodiment 4
Embodiment 4 illustrates narrowband signal specific and occupies the running time-frequency resource that part can be used for PDSCH inside a PRB pair
Schematic diagram, as shown in Fig. 4.In attached drawing 4, the grid of oblique line mark is the occupied running time-frequency resource of narrowband signal specific, instead
The grid of oblique line mark is the occupied running time-frequency resource of target data, when the grid of grey filling is broadband PDCCH occupied
The grid of frequency resource, bold box mark is running time-frequency resource scheduled in the second signaling.
In embodiment 4, narrowband signal specific includes the narrowband physical layer control signaling transmitted on N-PDCCH, N-PDCCH
It is counterpart of the PDCCH in narrow band communication, N-PDCCH is characterized in being configured (all tools i.e. in cell by cell common signaling
The UE of standby narrow band communication ability can be received).
In embodiment 4, the running time-frequency resource composition one of occupancy of the narrowband signal specific in LTE subframe # { 0,1,2,3,4,5 }
A search space N-PDCCH, the narrowband physical layer control signaling in the search space N-PDCCH can dispatch in LTE subframe #6
Narrow band data transmission-scheduling relationship as shown in dotted arrow R1.
In embodiment 4, base station not sent narrowband physical layer control signaling in above-mentioned N-PDCCH, but in LTE subframe #6
On PDCCH in have sent PDSCH-in the second signaling scheduling LTE subframe #6 as shown by an arrowr.In order to avoid with keep for
Narrow band signal on N-PDCCH interferes, and the target data of the second signaling scheduling is actually only in the time-frequency of backslash mark
Transmitted over resources.
In embodiment 4, the scheduler latency of narrow band communication is longer compared to the scheduler latency of broadband connections-and base station the latest will be
The scheduling for being directed to LTE subframe #6 is completed before LTE subframe #0, and to complete to be directed to LTE subframe #6 the latest before LTE subframe #6
Scheduling.Base station can determine that the occupied running time-frequency resource of target data is idle (to be not used for narrow bandpass in LTE subframe #0 the latest
Letter), therefore the scheduling for thering is the sufficient time to complete broadband connections.
Embodiment 5
Embodiment 5 illustrates the schematic diagram of candidate running time-frequency resource of the downlink narrowband signal specific inside a PRB pair, such as
Shown in attached drawing 5.In attached drawing 5, the grid of grey filling is the occupied running time-frequency resource of broadband PDCCH, the grid of cross spider mark
It is CRS (Cell Reference Signal, cell reference signals) occupied RE (Resource Element, resource grains
Son), the grid of bold box mark is DMRS (DeModulation Reference Signal, demodulated reference signal) occupied
RE, other RE are candidate running time-frequency resource of the narrowband signal specific inside a PRB pair.
In existing open source information, it is considered that narrow band signal should evade PDCCH and CRS, and be not directed to DMRS.This implementation
In example, narrowband signal specific evades DMRS and is conducive to base station on narrowband resource to common UE execution pre-encode operation, improves and passes
Defeated efficiency.
Embodiment 6
Embodiment 6 illustrates the structural block diagram of the processing unit in a UE, as shown in Fig. 6.In attached drawing 6, UE processing
Device 200 is mainly by the first module 201, the second module 202, third module 203 and the 4th module 204 composition.
First module 201 indicates L narrow-band in system bandwidth for receiving the first signaling, the first signaling.The narrow frequency
The bandwidth of band is no more than the bandwidth of a PRB.For second module 202 for determining L child resource, the L child resource is L respectively
A occupied running time-frequency resource of narrowband signal specific, L narrowband signal specific are transmitted in the L narrow-band respectively.
Third module 203 is for receiving the second signaling, the transmission of the second signaling scheduling target data.4th module 204 is for receiving mesh
Data are marked, the second signaling is descending scheduling signaling；Or the 4th module 204 for sending target data, the second signaling is uplink
Dispatch.
In embodiment 6, the L is positive integer, and the narrowband signal specific includes without narrowband physical layer control signaling
Scheduling and the narrow band signal that sends, the first signaling are for the ordinary terminal except narrowband terminal.Second signaling is to be directed to
Ordinary terminal except narrowband terminal.Running time-frequency resource scheduled in second signaling and the L child resource have overlapping, the mesh
The mark occupied running time-frequency resource of data is the time-frequency among running time-frequency resource scheduled in the second signaling and except the L child resource
Resource；Or second running time-frequency resource scheduled in signaling include time-frequency except among Q narrow-band the and described L child resource
Resource, the occupied running time-frequency resource of target data is running time-frequency resource scheduled in the second signaling, and the Q narrow-band is institute
State the subset of L narrow-band.First signaling is high-level signaling.
As the sub- embodiment 1 of embodiment 6, the second module for receiving L narrowband letter respectively in the L narrow-band
Breath, determines the L child resource according to the L narrow band information respectively.Wherein, the narrow band information includes { narrow band sync sequence
Column, Narrowcasting signaling, narrowband reference signal, narrowband high-level signaling one of or it is a variety of.
As the sub- embodiment 2 of embodiment 6, the second module determines the L according to third signaling for receiving third signaling
A child resource.Third signaling is for the ordinary terminal except narrowband terminal.Third signaling is high-level signaling.
As the sub- embodiment 3 of embodiment 6, the child resource occupies part (for Conventional wide band UE inside PRB pair
For) RE of PDSCH can be used for, i.e., the RE that the part inside corresponding PRB pair can be used for PDSCH is not occupied by the child resource.
Embodiment 7
Embodiment 7 illustrates the structural block diagram of the processing unit in a base station, as shown in Fig. 7.In attached drawing 7, base station
Processing unit 300 is mainly by the first module 301, the second module 302, third module 303 and the 4th module 304 composition.
First module 301 selects L PRB for sending the first signaling, the first signaling from system bandwidth.The narrow-band
Bandwidth be no more than a PRB bandwidth.Second module 302 is used to indicate L child resource, and the L child resource is L respectively
The occupied running time-frequency resource of narrowband signal specific, L narrowband signal specific are transmitted in the L narrow-band respectively.The
Three modules 303 are for sending the second signaling, the transmission of the second signaling scheduling target data.4th module 304 is for sending target
Data, the second signaling are descending scheduling signalings；Or target data is received, the second signaling is uplink scheduling signaling.
In embodiment 7, the L is positive integer, and the narrowband signal specific includes without narrowband physical layer control signaling
Scheduling and the narrow band signal that sends, the first signaling are for the ordinary terminal except narrowband terminal.Second signaling is to be directed to
Ordinary terminal except narrowband terminal.Running time-frequency resource scheduled in second signaling and the L child resource have overlapping, the mesh
The mark occupied running time-frequency resource of data is the time-frequency among running time-frequency resource scheduled in the second signaling and except the L child resource
Resource；Or second running time-frequency resource scheduled in signaling include time-frequency except among Q narrow-band the and described L child resource
Resource, the occupied running time-frequency resource of target data is running time-frequency resource scheduled in the second signaling, and the Q narrow-band is institute
State the subset of L narrow-band.First signaling is high-level signaling, and the second signaling is physical layer signaling.
As the sub- embodiment 1 of embodiment 7, the second module for sending L narrowband letter respectively in the L narrow-band
Breath, the L narrow band information indicate respectively the L child resource.Wherein, the narrow band information include narrow band sync sequence, it is narrow
Band broadcast signaling, narrowband reference signal, narrowband high-level signaling } one of or it is a variety of.
As the sub- embodiment 2 of embodiment 7, the second module is for sending third signaling, the third signaling instruction L son
Resource.Wherein, the narrow band information includes { narrow band sync sequence, Narrowcasting signaling, narrowband reference signal, narrowband high level letter
Enable } one of or it is a variety of, third signaling is for the ordinary terminal except narrowband terminal.The narrowband reference signal is small
Area is public.
Embodiment 8
Embodiment 8 illustrates in system bandwidth that there are the schematic diagrames of 2 narrow-bands, as shown in Fig. 8.In attached drawing 8, oblique line
The grid of mark is the occupied running time-frequency resource of narrowband signal specific, when the grid of backslash mark is that target data is occupied
Frequency resource, the grid of grey filling are the occupied running time-frequency resources of broadband PDCCH, and the grid of bold box mark is the second signaling institute
The running time-frequency resource of scheduling.
In embodiment 8, the second signaling is descending scheduling signaling, and { 0,1,2,3 ..., 8 } respectively correspond 9 LTE subframes, the
Two signalings are transmitted on PDCCH, and the relationship of the second signaling to scheduled running time-frequency resource is as shown in arrow R4.System bandwidth memory
In L narrow-band-narrowband { #1, #2 }, the L is 2.The L in running time-frequency resource scheduled in second signaling and the present invention
Child resource has overlapping on narrowband #1, is not overlapped on narrowband #2, and the occupied running time-frequency resource of target data is second
Among running time-frequency resource scheduled in signaling and remove narrowband #1 on the occupied running time-frequency resource of narrowband signal specific except when
Frequency resource.
Those of ordinary skill in the art will appreciate that all or part of the steps in the above method can be referred to by program
Related hardware is enabled to complete, described program can store in computer readable storage medium, such as read-only memory, hard disk or light
Disk etc..Optionally, one or more integrated circuit can be used also to realize in all or part of the steps of above-described embodiment.Phase
It answers, each modular unit in above-described embodiment, can be realized using example, in hardware, it can also be by the form of software function module
It realizes, the application is not limited to the combination of the software and hardware of any particular form.UE in the present invention, common UE and ordinary terminal
Including but not limited to mobile phone, tablet computer, notebook, vehicular communication equipment, wireless sensor, the wireless communications such as card of surfing Internet are set
It is standby.Narrowband terminal in the present invention includes but is not limited to internet-of-things terminal, RFID terminal, NB-IOT terminal, MTC (Machine
Type Communication, machine type communication) terminal, the channel radios such as eMTC (enhanced MTC, the MTC of enhancing) terminal
Believe equipment.Base station in the present invention includes but is not limited to macrocell base stations, microcell base station, Home eNodeB, the nothings such as relay base station
Line communication equipment.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification made, equivalent replacement, improve etc., it should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of method in UE being mutually compatible with narrow band communication, wherein include the following steps:
Step A. receives the first signaling, and the first signaling indicates L narrow-band in system bandwidth, each of described L narrow-band
Narrow-band be used to dispose NB-IoT；The bandwidth of the narrow-band is no more than the bandwidth of a PRB；
Step B. determines that L child resource, the L child resource are the L occupied running time-frequency resource of narrowband signal specific respectively,
L narrowband signal specific is transmitted in the L narrow-band respectively；
Step C. receives the second signaling, the transmission of the second signaling scheduling target data；
Step D. receives target data, and the second signaling is descending scheduling signaling；Or target data is sent, on the second signaling is
Row dispatch；
Wherein, the L is positive integer, and the narrowband signal specific includes sending out without the scheduling of narrowband physical layer control signaling
The narrow band signal sent, the first signaling are for the ordinary terminal except narrowband terminal；Second signaling be for narrowband terminal it
Outer ordinary terminal；Running time-frequency resource scheduled in second signaling and the L child resource have an overlapping, shared by the target data
Running time-frequency resource is the running time-frequency resource among running time-frequency resource scheduled in the second signaling and except the L child resource；Or
Running time-frequency resource scheduled in second signaling includes the running time-frequency resource except among Q narrow-band the and described L child resource, described
The occupied running time-frequency resource of target data is running time-frequency resource scheduled in the second signaling, and the Q narrow-band is the L narrow frequencies
The subset of band.
2. the method according to claim 1, wherein the step B one of includes the following steps:
Step B1. receives L narrow band information in the L narrow-band respectively, is determined respectively according to the L narrow band information
The L child resource；
Step B2. receives third signaling, determines the L child resource according to third signaling；
Wherein, the narrow band information includes { narrow band sync sequence, Narrowcasting signaling, narrowband reference signal, narrowband high level letter
Enable } one of or it is a variety of, third signaling is for the ordinary terminal except narrowband terminal.
3. the method according to claim 1, wherein the narrowband signal specific includes { narrowband physical layer control
At least one of signaling, narrow band sync sequence, Narrowcasting signaling, narrowband reference signal, uplink random access sequence }.
4. a method of in the base station being mutually compatible with narrow band communication, wherein include the following steps:
Step A. sends the first signaling, and the first signaling indicates L narrow-band in system bandwidth, each of described L narrow-band
Narrow-band be used to dispose NB-IoT；The bandwidth of the narrow-band is no more than the bandwidth of a PRB；
Step B. indicates L child resource, and the L child resource is the L occupied running time-frequency resource of narrowband signal specific respectively,
L narrowband signal specific is transmitted in the L narrow-band respectively；
Step C. sends the second signaling, the transmission of the second signaling scheduling target data；
Step D. sends target data, and the second signaling is descending scheduling signaling；Or target data is received, on the second signaling is
Row dispatch；
Wherein, the L is positive integer, and the narrowband signal specific includes sending out without the scheduling of narrowband physical layer control signaling
The narrow band signal sent, the first signaling are for the ordinary terminal except narrowband terminal；Second signaling be for narrowband terminal it
Outer ordinary terminal；Running time-frequency resource scheduled in second signaling and the L child resource have an overlapping, shared by the target data
Running time-frequency resource is the running time-frequency resource among running time-frequency resource scheduled in the second signaling and except the L child resource；Or
Running time-frequency resource scheduled in second signaling includes the running time-frequency resource except among Q narrow-band the and described L child resource, described
The occupied running time-frequency resource of target data is running time-frequency resource scheduled in the second signaling, and the Q narrow-band is the L narrow frequencies
The subset of band.
5. according to the method described in claim 4, it is characterized in that, the step B one of includes the following steps:
Step B1. sends L narrow band information respectively in the L narrow-band, and the L narrow band information indicates respectively the L
A child resource；
Step B2. sends third signaling, and third signaling indicates the L child resource；
Wherein, the narrow band information includes { narrow band sync sequence, Narrowcasting signaling, narrowband reference signal, narrowband high level letter
Enable } one of or it is a variety of, third signaling is for the ordinary terminal except narrowband terminal.
6. according to the method described in claim 4, it is characterized in that, the narrowband signal specific includes { narrowband physical layer control
At least one of signaling, narrow band sync sequence, Narrowcasting signaling, narrowband reference signal, uplink random access sequence }.
7. a kind of user equipment being mutually compatible with narrow band communication, wherein including following module:
First module: for receiving the first signaling, the first signaling indicates L narrow-band in system bandwidth, in the L narrow-band
Each narrow-band be used to dispose NB-IoT；The bandwidth of the narrow-band is no more than the bandwidth of a PRB；
Second module: for determining that L child resource, the L child resource are the L occupied time-frequency of narrowband signal specific respectively
Resource, L narrowband signal specific are transmitted in the L narrow-band respectively；
Third module: for receiving the second signaling, the transmission of the second signaling scheduling target data；
4th module: for receiving target data, the second signaling is descending scheduling signaling；Or target data is sent, the second letter
Order is uplink scheduling signaling；
Wherein, the L is positive integer, and the narrowband signal specific includes sending out without the scheduling of narrowband physical layer control signaling
The narrow band signal sent, the first signaling are for the ordinary terminal except narrowband terminal；Second signaling be for narrowband terminal it
Outer ordinary terminal；Running time-frequency resource scheduled in second signaling and the L child resource have an overlapping, shared by the target data
Running time-frequency resource is the running time-frequency resource among running time-frequency resource scheduled in the second signaling and except the L child resource；Or
Running time-frequency resource scheduled in second signaling includes the running time-frequency resource except among Q narrow-band the and described L child resource, described
The occupied running time-frequency resource of target data is running time-frequency resource scheduled in the second signaling, and the Q narrow-band is the L narrow frequencies
The subset of band.
8. user equipment according to claim 7, which is characterized in that the second module is used for following one:
- receives L narrow band information in the L narrow-band respectively, determines the L respectively according to the L narrow band information
Child resource；
- receives third signaling, determines the L child resource according to third signaling；
Wherein, the narrow band information includes { narrow band sync sequence, Narrowcasting signaling, narrowband reference signal, narrowband high level letter
Enable } one of or it is a variety of, third signaling is for the ordinary terminal except narrowband terminal.
9. a kind of base station equipment being mutually compatible with narrow band communication, wherein including following module:
First module: for sending the first signaling, the first signaling indicates L narrow-band in system bandwidth, in the L narrow-band
Each narrow-band be used to dispose NB-IoT；The bandwidth of the narrow-band is no more than the bandwidth of a PRB；
Second module: being used to indicate L child resource, and the L child resource is the L occupied time-frequency of narrowband signal specific respectively
Resource, L narrowband signal specific are transmitted in the L narrow-band respectively；
Third module: for sending the second signaling, the transmission of the second signaling scheduling target data；
4th module: for sending target data, the second signaling is descending scheduling signaling；Or target data is received, the second letter
Order is uplink scheduling signaling；
Wherein, the L is positive integer, and the narrowband signal specific includes sending out without the scheduling of narrowband physical layer control signaling
The narrow band signal sent, the first signaling are for the ordinary terminal except narrowband terminal；Second signaling be for narrowband terminal it
Outer ordinary terminal；Running time-frequency resource scheduled in second signaling and the L child resource have an overlapping, shared by the target data
Running time-frequency resource is the running time-frequency resource among running time-frequency resource scheduled in the second signaling and except the L child resource；Or
Running time-frequency resource scheduled in second signaling includes the running time-frequency resource except among Q narrow-band the and described L child resource, described
The occupied running time-frequency resource of target data is running time-frequency resource scheduled in the second signaling, and the Q narrow-band is the L narrow frequencies
The subset of band.
10. base station equipment according to claim 9, which is characterized in that the second module is used for following one:
- sends L narrow band information respectively in the L narrow-band, and the L narrow band information indicates respectively the L son money
Source；
- sends third signaling, and third signaling indicates the L child resource；
Wherein, the narrow band information includes { narrow band sync sequence, Narrowcasting signaling, narrowband reference signal, narrowband high level letter
Enable } one of or it is a variety of, third signaling is for the ordinary terminal except narrowband terminal.
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| CN107231326B (en) * | 2017-05-19 | 2020-04-14 | 大连理工大学 | Cell search system in NB-IoT system downlink |
| CN109039554B (en) * | 2017-06-09 | 2021-01-26 | 上海朗帛通信技术有限公司 | Method and device in user equipment and base station used for narrow-band communication |
| CN109152001B (en) * | 2017-06-15 | 2021-02-02 | 大唐移动通信设备有限公司 | Time-frequency resource allocation method and device |
| CN109428699B (en) * | 2017-08-28 | 2021-03-09 | 上海朗帛通信技术有限公司 | Method and device in user equipment and base station used for narrow-band communication |
| CN110167150A (en) * | 2018-02-12 | 2019-08-23 | 中兴通讯股份有限公司 | A kind of method and apparatus of resource allocation |
| CN110167165B (en) * | 2018-02-14 | 2021-08-20 | 华为技术有限公司 | Resource allocation method and device |
| WO2019222952A1 (en) * | 2018-05-24 | 2019-11-28 | 南通朗恒通信技术有限公司 | Method and apparatus used in user equipment and in base station for wireless communication |
| CN113379785B (en) * | 2021-06-22 | 2024-03-15 | 辽宁工程技术大学 | Saliency target detection method integrating boundary priori and frequency domain information |
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