CN108616993A - A kind of dispatching method and device of physical channel resources - Google Patents
A kind of dispatching method and device of physical channel resources Download PDFInfo
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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
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
This application discloses a kind of dispatching method of physical channel resources and devices, are applied to narrowband Internet of Things, the method includes：Base station obtains the covering grade of M user equipment, and M is positive integer；The base station determines the starting resource scheduling offset time and scheduling range of each user equipment according to the covering grade of the M user equipment；The base station dispatches offset time according to the starting resource of each user equipment and scheduling range determines the corresponding scheduling interval of each user equipment；The base station is the dispatching user facility narrowband Physical Downlink Control Channel NPDCCH in the corresponding scheduling interval of each user equipment.
Description
Technical field
This application involves wireless communication field more particularly to the dispatching methods and device of a kind of physical channel resources.
Background technology
In general, internet of things equipment can be divided into three classes：1. being not necessarily to mobility, big data quantity (uplink) needs wider frequency section,
Such as supervision of the cities camera.2. mobility is strong, frequent switching, small data quantity, such as fleet's tracking and managing need to be executed.3. being not necessarily to
Mobility, small data quantity is insensitive to time delay, such as intelligent meter data recording.NB-IoT is precisely in order to 3. internet of things equipment is planted in reply the
And it gives birth to.The sources NB-IoT arise from following several big demands of Internet of Things at this stage：Coverage enhancement (enhancing 20dB)；Support connects on a large scale
It connects, 100K terminals/200KHz cells；Super low-power consumption, 10 years battery lifes；Ultra Low Cost minimizes signaling overheads, especially empty
Mouth signaling overheads；Ensure the safety of whole system, includes the safety of core net；Support IP and non-IP data transmissions；It supports
Short message (optional deployment) etc..
It is mutual to become all things on earth based on cellular narrowband Internet of Things (Narrow Band Internet of Things, NB-IoT)
One important branch of networking network.NB-IoT is mainly directed towards low cost, low-power consumption, low rate, the internet of things service extensively covered, such as
Sensor class, meter reading class, logistics monitoring, tracking class etc..NB-IoT is implemented in cellular network, only consumes the band of about 180KHz
Width, uplink and downlink peak rate are no more than 250kbit/s.It can be deployed directly into GSM network, UMTS network or LTE network, to reduce
Lower deployment cost realizes smooth upgrade.
For existing LTE network, the above demand can not be fully met.Even LTE-A, the mainly carrier wave of concern is poly-
The functions such as conjunction, dual link and D2D, there is no consider Internet of Things.For example, in covering, by taking water meter as an example, present position wireless ring
Border is poor, and compared with smart mobile phone, difference in height leads to signal difference 4dB, while closeing the lid again, additional to increase about 10dB or so damages
Consumption, so needing to enhance 20dB.In extensive connection, internet of things equipment is too many, if going to connect this with existing LTE network
A little bulk devices can lead to network over loading.In addition, the characteristics of NB-IoT has oneself, for example there is no QoS, because at this stage
The data packet of NB-IoT not transfer delay sensitivities, for example, the equipment of IMS one kind in real time, is not in NB-IoT networks.
NB-IoT by be repeated several times send improve its covering (maximum coupling loss (Maximum Coupling Loss,
MCL), the path loss from antenna for base station port to terminal antenna port), it may be implemented than traditional coverage enhancement 20dB.
Time division multiplexing is used between down physical channel, since resource is limited and supports to repeatedly transmit, NB-IoT
Uplink and downlink all use asynchronous adaptive HARQ, i.e., according to DCI (the Downlink Control that newly receive
Information it) determines to retransmit.In addition, in order to reduce the complexity of terminal, NB-IoT only supports a HARQ procedure, and
And the UE decoding times for allowing NPDCCH and NPDSCH longer.DCI can be used for dispatching downlink data or upstream data.Scheduling life
The DCI by being carried on NPDCH is enabled to transmit, NPDCH is transmitted using aggregation level (aggregation levels, AL) 1 or AL2
DCI.For AL1, two DCI multiplexings only carry a DCI (i.e. AL2) in a subframe or a subframe, to reduce encoding rate
It is covered with being promoted.By retransmitting enhancing covering, retransmits occupy a subframe every time.
Therefore, narrowband Physical Downlink Control Channel (the Narrow Physical for the users that difference covers in NB-IoT
Downlink Control Channel, NPDCCH), narrowband Physical Downlink Shared Channel (Narrow Physical
Downlink Shared Channel, NPDSCH) and narrowband Physical Uplink Shared Channel (Narrow Physical uplink
Shared Channel, NPUSCH) the continuous transmission time and the initial time of transmission may have very big difference.And existing skill
For the allocation plan of NPDCCH, NPDSCH or NPUSCH in art, it is easy to cause different user in time domain scheduling process, go out
The case where existing network resources waste so that the utilization rate of NPDCCH resources is relatively low, even results in the use for covering big duration length
The data at family are more difficult to be sent, and then leads to network congestion, and dispatching efficiency is relatively low.
Invention content
The embodiment of the present application provides a kind of dispatching method and device of physical downlink control channel resource, existing for solving
The problem for having the utilization rate of PDCCH resource present in technology low.
The embodiment of the present application provides a kind of dispatching method of physical channel resources, is applied to narrowband Internet of Things, including：
Base station obtains the covering grade of M user equipment, and M is positive integer；
The base station determines the starting resource scheduling of each user equipment according to the covering grade of the M user equipment
Offset time and scheduling range；
The base station dispatches offset time according to the starting resource of each user equipment and scheduling range determines often
The corresponding scheduling interval of a user equipment；
The base station is dispatching user facility narrowband physical down in the corresponding scheduling interval of each user equipment
Control channel NPDCCH.
The embodiment of the present application obtains the covering grade of M user equipment by base station, and M is the integer more than 0；The base station
The user equipment of identical covering grade will be belonged in the M user equipment as one group, and determined and every group of user equipment
The corresponding starting resource scheduling offset time of covering grade and scheduling range；The base station is in every group of corresponding of user equipment
It is the dispatching user facility NPDCCH in beginning scheduling of resource offset time and the corresponding scheduling interval of scheduling range.It can be with
Realize the resource that NPDCCH is allocated according to the user equipment of different covering grades so that the small user equipment of resource requirement obtains
Less PDCCH resource, the big user equipment of resource requirement is taken to obtain more PDCCH resource, avoid the wave of PDCCH resource
Take, improves the utilization rate of PDCCH resource.In addition, the scheduling interval, which includes multiple covering grades, corresponds to the narrow of distribution
Search space with Physical Downlink Control Channel NPDCCH.Ensure that within a dispatching cycle, the M user equipment can be
All scheduling is completed in corresponding scheduling interval, and in scheduling process, it is only necessary to the NPDCCH in the corresponding scheduling interval of search
Scheduling can be completed, greatly improve dispatching efficiency.
A kind of possible realization method, the base station determine each user according to the covering grade of the M user equipment
The starting resource of equipment dispatches offset time, including：
The base station is if it is determined that the corresponding covering grade of the first user is less than the corresponding covering grade of second user, then by institute
The starting resource scheduling offset time for stating the corresponding covering grade of second user is set greater than or is equal to first user couple
The end time for the corresponding scheduling interval of covering grade answered.
By the above method, the scheduling interval of different covering grades can be staggered in time domain space, to avoid dispatching
Occur the problem that dispatching efficiency is low and resource utilization is low when the user equipment of various durations, it can be to avoid low covering etc.
The re-transmission fragment of grade user causes higher covering user to distribute unsuccessful phenomenon, while reducing user resources search arithmetic amount.
A kind of possible realization method, the base station determine each user according to the covering grade of the M user equipment
The scheduling range of equipment, including：
The base station determines the corresponding search of the covering grade according to the corresponding covering grade of the M user equipment
The size of the number in space and each search space；
The base station according to the size of the number and each search space of the search space of the covering grade, determine described in
The scheduling range of covering grade；
Wherein, the size of the search space of the covering grade and the covering grade positive correlation；Described search space is
The base station is the minimum period that the user equipment distributes NPDCCH.
According to the above method, as the processing time of user equipment searches resource and it can be distributed into power using active balance, carried
High allocative efficiency reduces distribution time delay.
A kind of possible realization method, the base station determine each user according to the covering grade of the M user equipment
The scheduling range of equipment, including：
The quantity for the user equipment that the base station is dispatched according to the search capability and needs of the base station, determines the tune
Spend range.
By the above method, it can determine scheduling range according to the ability of base station and user demand, reduce base station
A variety of scheduling ranges are set for scheduling range, reduces the treating capacity of base station, is adjusted in addition, being determined according to the quantity of user equipment
Range is spent, resource utilization can be further improved, improve the efficiency of resource allocation.
A kind of possible realization method, the method further include：
If the base station in the scheduling interval, does not find available NPDCCH, then the base station sets the user
Standby be added is scheduled next dispatching cycle.
Next dispatching cycle is added in the user equipment, and the priority of the user equipment can be turned up, with to the greatest extent
The data transmission of the user equipment is gone out soon, improves the efficiency of the scheduling of resource of user equipment.
The embodiment of the present application provides a kind of dispatching device of physical channel resources, is applied to narrowband Internet of Things, including：
Acquiring unit, the covering grade for obtaining M user equipment, M are positive integer；
Processing unit determines the starting resource of each user equipment for the covering grade according to the M user equipment
Dispatch offset time and scheduling range；Offset time and scheduling model are dispatched according to the starting resource of each user equipment
It encloses and determines the corresponding scheduling interval of each user equipment；In the corresponding scheduling interval of each user equipment, set for the user
Standby scheduling narrowband Physical Downlink Control Channel NPDCCH.
A kind of possible realization method, the processing unit are specifically used for：
If it is determined that the corresponding covering grade of the first user is less than the corresponding covering grade of second user, then described second is used
The starting resource scheduling offset time of the corresponding covering grade in family is set greater than or is equal to the corresponding covering of first user
The end time of the corresponding scheduling interval of grade.
A kind of possible realization method, the processing unit are specifically used for：
According to the corresponding covering grade of the M user equipment, the number of the corresponding search space of the covering grade is determined
The size of mesh and each search space；According to the size of the number of the search space of the covering grade and each search space,
Determine the scheduling range of the covering grade；Wherein, the size of the search space of the covering grade and the covering grade be just
It is related；Described search space is the minimum period that the base station is the user equipment distribution NPDCCH.
A kind of possible realization method, the processing unit are specifically used for：
According to the quantity for the user equipment that the search capability of the base station and needs are dispatched, the scheduling range is determined.
A kind of possible realization method, the processing unit are additionally operable to：
If in the scheduling interval, available NPDCCH is not found, then under the user equipment is added for the base station
One dispatching cycle is scheduled.
Description of the drawings
Fig. 1 is a kind of flow diagram of the dispatching method of physical channel resources of the embodiment of the present application；
Fig. 2 is a kind of structural schematic diagram of the dispatching method of physical channel resources of the embodiment of the present application；
Fig. 3 is a kind of structural schematic diagram of the dispatching device of physical channel resources of the embodiment of the present application.
Specific implementation mode
As shown in Figure 1, the embodiment of the present application provides a kind of dispatching method of physical channel resources, it is applied to narrowband Internet of Things
Net includes the following steps：
Step 101：Base station obtains the covering grade of M user equipment, and M is positive integer；
Step 102：The base station determines the starting of each user equipment according to the covering grade of the M user equipment
Scheduling of resource offset time and scheduling range；
Step 103：The base station offset time and scheduling model are dispatched according to the starting resource of each user equipment
It encloses and determines the corresponding scheduling interval of each user equipment；
Step 104：The base station is the dispatching user facility narrowband in the corresponding scheduling interval of each user equipment
Physical Downlink Control Channel NPDCCH.
By the above method, the resource that NPDCCH is allocated according to the user equipment of different covering grades may be implemented,
So that the small user equipment of resource requirement obtains less PDCCH resource, the big user equipment of resource requirement obtains more
PDCCH resource avoids the waste of PDCCH resource, improves the utilization rate of PDCCH resource.So that enhancing covering grade user,
The user of especially high covering grade is easy to dispatch successfully, and reduces scheduling delay.In addition, the scheduling interval includes
Multiple covering grades correspond to the search space of the narrowband Physical Downlink Control Channel NPDCCH of distribution.Ensure to dispatch at one
The M user equipment can all scheduling be completed in corresponding scheduling interval in period, and in scheduling process, it is only necessary to
Scheduling can be completed in NPDCCH in the corresponding scheduling interval of search, improves scheduling and distributes the treatment effeciency of resource, reaches high
Effect scheduling and reduction scheduling delay effect, greatly improve dispatching efficiency.
Since NB-IoT need to realize that the longer time is standby.Usually can by energy-saving mode (Power Saving Mode,
PSM it) is realized with overlength discontinuous reception (Enhanced Discontinuous Reception, eDRX), for example, PSM patterns
Under, user equipment is still registered in net, but signaling is unreachable, thereby using family equipment can reside in for more time deep sleep with
Achieve the purpose that power saving.EDRX further extends the sleep cycle of user equipment at the idling mode, reduces in user equipment
The unnecessary startup of receiving unit.
In a kind of possible realization method, user equipment, which can be set, starts the period, only is needing to be transmitted data
When, user equipment is actuated for registering, at this point, the user equipment needs to carry out the scheduling of NPDCCH.
In a step 101, the base station can determine the M user when reaching dispatching cycle according to preset rules
Equipment.
Wherein, dispatching cycle can be 1ms, 2ms etc., specifically, can be according to base station processing capacity and user equipment
Delay requirement is configured, to ensure to complete the M dispatching user facility within dispatching cycle.
In NB-IoT systems, uplink and downlink resource scheduling information (such as：The letters such as resource allocation result, code modulation mode
Breath) all it is to be carried by NPDCCH.And DCI (Downlink Control Information, downlink control in NPDCCH
Information) contain resource allocation on one or more user equipment and other control information.Each user equipment is obtaining
After getting NPDCCH, by demodulate NPDCCH in DCI, determine be used for transmission downlink data (including broadcast message, paging, UE
Data etc.) the corresponding resource locations of NPDSCH, and determine the corresponding resource-niches of NPUSCH for being used for transmission upstream data
It sets.NPDCCH contains UL grant, used resource when indicating UE transmitting uplink datas.
The preset rules include：According to the priority of user equipment, the industry of the scheduling delay of user equipment, user equipment
Service type etc. determines the M user equipment.For different upstream and downstream data volume demands and period, it may be determined that one
M user equipment in a dispatching cycle.For example, autonomous exception reporting type of service.Such as smog alarm detector, intelligent electric meter
The notice etc. of power failure, the minimum data volume demand of upstream data (crossed joint magnitude), the period can be as unit of year, the moon.2) autonomous
Periodic report type of service.Such as intelligent common cause (coal gas/water/electricity) measurement report, reading intelligent agriculture, intelligent environment, uplink
Compared with small data quantity demand (hundred byte magnitudes), the period can be by day, as unit of hour.3) network instruction type of service.As open/
Close, equipment triggering sends uplink report, request meter reading, the minimum data volume demand of downlink (crossed joint magnitude), the period can be with
It, hour be unit.4) software upgrading type of service.Such as software patch/update, upstream and downstream larger data amount demand (K word
Save magnitude), the period can be by day, as unit of hour.
As can be seen that in time domain scheduling process, different types of user equipment differs greatly in data volume demand, because
This, needs in current dispatching cycle in the user equipment dispatched, according to the processing capacity of base station and the business of user equipment
The rules such as type carry out M user equipment of selection and are scheduled, can the balanced base station dispatching, reduce to dispatch and gather around
Plug improves dispatching efficiency.
In specific implementation process, resource allocation can be carried out according to the M user equipment of selection, be set by user
The mode of standby priority or poll, sorts to user equipment, and M user equipment carries out prioritized resources distribution before selection, to improve
Resource utilization.
NB-IoT by be repeated several times send improve its covering (maximum coupling loss (Maximum Coupling Loss,
MCL), the path loss from antenna for base station port to terminal antenna port), it may be implemented than traditional coverage enhancement 20dB.With
For water meter, present position wireless environment is poor, and compared with smart mobile phone, difference in height leads to signal difference 4dB, while covering again
Lid, it is additional to increase about 10dB or so losses, so needing coverage enhancement.
For example, the covering grade (Coverage Enhancement Level, CE Level), can be divided into three
A grade, respectively correspondence can fight 144dB, 154dB, 164dB signal decaying.Meeting between base station and the user equipment of NB-IoT
Corresponding Information Repeater number is selected according to the covering grade where it.Wherein, the covering grade of the user equipment can
To be determined when user equipment accesses, details are not described herein for specific method of determination.
NB-IoT is using centralized control management enode (Evolved Node Base station, eNB) and use
Between the equipment of family, the radio resource needed for data transmission.Identical as LTE system, UE transmission or reception data are all accepted in eNB
Instruction is respectively that downlink transmission distribution (Downlink Assignment) authorizes (Uplink with uplink transmission
Grant)；That is downlink transmission control instruction (Downlink Control Indicator, DCI), uplink part use DCI
Format, downlink part are DCI N1 formats, and paging (Paging) part then uses DCI N2 formats.
UE is in the region that can periodically monitor/monitor (Monitor) DCI transmission with the process of base station chaining, i.e., narrow frequency
Physical down controls channel (NPDCCH), also known as search space (Search Space).After UE receives one's own DCI, then
It is indicated to corresponding data delivery area according to its content, i.e., narrow frequency physical down shares channel (NPDSCH) and receives data.Not
Each subframe has NPDCCH, but periodically occurs.Each search space has wireless heterogeneous networks (RRC) configuration corresponding
Maximum number of repetitions Rmax, the appearance period size of search space are a parameter of corresponding Rmax and rrc layer configuration
Product.In one DCI can with the DCI number of retransmissions and DCI transmit after to its scheduling NPDSCH or
Delay time needed for NPUSCH at the beginning of the user equipment of NB-IoT is the search space where this DCI can be used, comes
At the beginning of calculating the end time of DCI and the data of scheduling, to carry out the transmission or reception of data.
In addition, in time domain scheduling process, NB-IoT is FDD half-duplex type-B patterns.I.e. uplink and downlink are in frequency
Upper to separate, user equipment will not be handled and be sended and received simultaneously, and user equipment only needs a switch that change is gone to send and receive
Pattern.Therefore, different uplink duration and different downlink transfer duration can all influence base station and set to user
The scheduling of standby NPDCCH.For low covering grade user, data transmission can be carried out by DL Gap or UL GAP mechanism.
In a step 102, the starting resource of the corresponding covering grade of the user equipment dispatches offset time, is base station needle
Scheduling instance in the dispatching cycle is started, the time after a preset offset time；Such as, however, it is determined that the base
That stands starts at the time of scheduling to be T0, then it is t1 to pass through the first covering grade preset offset time, then the first covering grade
It is T0+t1 that starting resource, which dispatches offset time,.
To improve the resource utilization of NPDCCH, resource fragmentation, a kind of possible realization method, the starting resource are reduced
Dispatching offset time can also be according to the covering grade and the signal to be sent of the corresponding user equipment of the covering grade
Duration is configured.
For example, it is assumed that the first user equipment and second user equipment correspond to the first covering grade, third user equipment corresponds to
Second covering grade；A length of 1ms when the signal to be sent of the first user equipment, when signal to be sent of second user equipment, are a length of
2ms；
If it is determined that the corresponding starting resource scheduling offset time of first covering grade is 10ms, the first covering grade
Ranging from 12ms is dispatched, then the starting resource scheduling offset time that second covering grade can be arranged is 10ms+12ms+
2ms=24ms.
A kind of possible realization method, the base station determine each user according to the covering grade of the M user equipment
The starting resource of equipment dispatches offset time, may include：
The base station is if it is determined that the corresponding covering grade of the first user is less than the corresponding covering grade of second user, then by institute
The starting resource scheduling offset time for stating the corresponding covering grade of second user is set greater than or is equal to first user couple
The end time for the corresponding scheduling interval of covering grade answered.
Such as, however, it is determined that the preset offset time of the first covering grade be t1, the scheduling ranging from T1 of the first covering grade,
Then the initial time of the scheduling interval of the first covering grade is that the starting resource of first covering grade dispatches offset time T0+
The end time of t1, the scheduling interval of the first covering grade are T0+t1+T1.The preset offset time of second covering grade can be with
Starting resource scheduling offset time for t2, the second covering grade can be T0+t1+T1+t2.If the scheduling of the second covering grade
Ranging from T2, then the end time of the scheduling interval of the second covering grade is T0+t1+T1+t2+T2.
By the above method, the scheduling interval of different covering grades can be staggered in time domain space, to avoid dispatching
Occur the problem that dispatching efficiency is low and resource utilization is low when the user equipment of various durations, it can be to avoid low covering etc.
The re-transmission fragment of grade user causes higher covering user to distribute unsuccessful phenomenon, while reducing user resources search arithmetic amount.Example
Such as, for the small user of covering grade, the duration for sending NPDSCH is smaller, is set in the smaller different user of covering grade
Between the standby NPDSCH occupied, the larger user equipment of covering grade cannot be distributed to, causes the covering grade big duration long
The data of user equipment can only come position further below and attempt to send, and then block, influence the efficiency of scheduling；Separately
Outside, it is relatively easy to resource fragmentation occur, causes resource utilization relatively low.
In a step 102, it finishes, and can close to ensure that the M user equipment can be dispatched within dispatching cycle
Reason utilizes resource.A kind of possible realization method, the base station determine each according to the covering grade of the M user equipment
The scheduling range of user equipment may include：
The base station determines the corresponding search of the covering grade according to the corresponding covering grade of the M user equipment
The size of the number in space and each search space；
The base station according to the size of the number and each search space of the search space of the covering grade, determine described in
The scheduling range of covering grade；
Wherein, the search space of the covering grade and the covering grade positive correlation；Described search space is the base
It stands as the minimum period of the NPDCCH of user equipment distribution.
In specific implementation process, search space of the scheduling ranging from according to the corresponding NPDCCH of the covering grade
Size and described search space number, i.e. searching times determine.If for example, the corresponding covering grade of user equipment
The searching times of NPDCCH are set as 10, then can deviate the corresponding starting resource scheduling biasing of the covering grade by scheduling instance
At the time of time corresponds to, the search spaces NPDCCH of 10 correspondence covering grades are searched for, as the covering grade
Scheduling range.
For example, as shown in Fig. 2, being one specific embodiment of the application, covering grade includes the first covering grade,
Second covering grade, third covering grade, first covering grade starting resource scheduling offset time be t1, described second
The starting resource scheduling offset time of covering grade is t2, and the starting resource scheduling offset time of the third covering grade is
T3, scheduling ranging from n1 × pp1 of first covering grade, the scheduling ranging from n2 of second covering grade 202 ×
Pp2, scheduling ranging from n3 × pp3 of the third covering grade.Wherein, the n1, n2, n3 are the scheduling of corresponding covering grade
The searching times of search space in range；The pp1, pp2, pp3 are that the search in the scheduling range of corresponding covering grade is empty
Between duration, could be provided as pp3>pp2>pp1；For example, the number n1 of the search space of the first covering grade can be
3, each search space, the i.e. minimum period of NPDCCH can be 1s.The starting resource of different covering grades dispatches offset time
Between relationship can be expressed as：t2≥t1+n1×pp1；t3≥t2+n2×pp2；First covering in next dispatching cycle etc.
The starting resource scheduling offset time t1 of grade could be provided as t1 >=t3+n3 × pp3.
According to the above method, as the processing time of user equipment searches resource and it can be distributed into power using active balance, carried
High allocative efficiency reduces distribution time delay.
A kind of possible realization method, the base station determine each user according to the covering grade of the M user equipment
The scheduling range of equipment can also include：
The quantity for the user equipment that the base station is dispatched according to the search capability and needs of the base station, determines the tune
Spend range.
In specific implementation process, the base station is according to the processing capacity and memory space of the CPU of the base station, really
Surely the maximum magnitude that can search for, for example, the scheduling may range from 1 hour；It can also be according to the user for needing to dispatch
The quantity of equipment determines the scheduling range, such as, however, it is determined that the negligible amounts of the user equipment, the scheduling range can
To be set as the duration of at least one search space.
Furthermore it is also possible to which the corresponding scheduling interval of the covering grade is arranged according to other modes, do not limit herein.
By the above method, it can determine scheduling range according to the ability of base station and user demand, reduce base station
A variety of scheduling ranges are set for scheduling range, reduces the treating capacity of base station, is adjusted in addition, being determined according to the quantity of user equipment
Range is spent, resource utilization can be further improved, improve the efficiency of resource allocation.
In step 103, the starting resource of covering grade is dispatched offset time as the covering grade by the base station
The initial time of corresponding scheduling interval, the time using the scheduling range of the covering grade plus initial time are covered as described in
The end time of the scheduling interval of lid grade.
For example, the starting resource that the initial time of the scheduling interval of the first covering grade is first covering grade is dispatched
The end time of offset time T0+t1, the scheduling interval of the first covering grade are T0+t1+T1.
At step 104, the embodiment of the present application further includes：According to the allocation result of NPDCCH, distribution NPDSCH and
NPUSCH。
The subframe structure of NPDSCH is as NPDCCH.NPDSCH be for transmitting downlink data and system information,
The occupied bandwidth of NPDSCH is an entire PRB sizes.One transmission block (Transport Block, TB) is according to used in
Modulation and coding strategy (MCS), it may be necessary to it is transmitted using more than one subframe, therefore received in NPDCCH
Can include that the corresponding number of subframes of a TB and number of retransmissions indicate in Downlink Assignment.
NPUSCH is used for transmission upstream data and ascending control information.Single-frequency or multifrequency can be used to pass for NPUSCH transmission
It is defeated.The minimum unit for being mapped to transmission block is resource unit (resource unit, RU), it is by NPUSCH formats and subcarrier
Space determines.NB-IoT is used as the base unit of resource allocation according to subcarrier and number of time slot.Since a TB may be needed
In addition to indicating upstream data in the Uplink Grant that transmitted using multiple resource units, therefore be received in NPDCCH
Transmission used in resource units subcarrier index (Index), also can include the corresponding resource units numbers of a TB with
And number of retransmissions instruction.
It therefore,, can basis when needing to carry out the distribution of NPDSCH or NPUSCH after determining assignable NPDCCH
The sequential relationship of NPDCCH and NPDSCH or NPUSCH, i.e., according to the time delay (delay) and resource element of NPDSCH or NPUSCH
(Resource Element, RE) is determined.
For example, offset time is dispatched in the base station according to the starting resource of the corresponding covering grade of user equipment, meter is determined
Beginning scheduling instance is counted, while according to the scheduling range of the covering grade, searching N number of available NPDCCH；According to
The sequential relationship of NPDCCH and NPDSCH or NPUSCH traverse the corresponding NPDSCH or NPUSCH resources of N number of NPDCCH resources.If
The corresponding NPDSCH or NPUSCH resources of one of NPDCCH resources are determined there are no occupied, then by the NPDCCH resources
And the NPDSCH lives NPUSCH resource allocations to the user equipment.In specific implementation process, for low covering grade
User can carry out data transmission by DL Gap or UL GAP mechanism.
According to the above method, the user of higher covering grade can be reduced to avoid the re-transmission fragment of low covering grade user
Equipment distributes unsuccessful problem, while it is search arithmetic amount when user equipment distributes resource to reduce base station, improves scheduling effect
Rate.
After the user equipment distributes the NPDCCH successes, starts the resource allocation of next user equipment, distribute
Mode may refer to the above method, and details are not described herein.
At step 104, the method further includes：Offset time and described is dispatched in the starting resource in the base station
It dispatches in the corresponding scheduling interval of range, does not find available NPDCCH, then the base station user equipment is added next
A dispatching cycle is scheduled.
In conjunction with the example above, when the user equipment can successfully divide in 10 search spaces of corresponding covering grade
With NPDCCH resources, it is determined that the NPDCCH resource allocations success of the user equipment, if not, it is determined that the user equipment
NPDCCH resource allocations fail.
Alternatively, the user equipment is being implemented to search N number of available NPDCCH resources in scheduling interval, but the N
The corresponding NPDSCH or NPUSCH resources of a available NPDCCH resources are all unavailable, then it is assumed that are distributed to institute without available resources
State user equipment, it is determined that the user equipment dispatches failure within the dispatching cycle, the user equipment is added next
Dispatching cycle, and the priority of the user equipment can be turned up, the data transmission of the user equipment to be gone out as early as possible,
Improve the efficiency of the scheduling of resource of user equipment.
As shown in figure 3, the embodiment of the present application provides a kind of dispatching device of physical channel resources, it is applied to narrowband Internet of Things
Net, including：
Acquiring unit 301, the covering grade for obtaining M user equipment, M are positive integer；
Processing unit 302 determines the starting of each user equipment for the covering grade according to the M user equipment
Scheduling of resource offset time and scheduling range；Offset time and tune are dispatched according to the starting resource of each user equipment
Degree range determines the corresponding scheduling interval of each user equipment；It is the use in the corresponding scheduling interval of each user equipment
Family equipment scheduling narrowband Physical Downlink Control Channel NPDCCH.
A kind of possible realization method, processing unit 302 are specifically used for：
If it is determined that the corresponding covering grade of the first user is less than the corresponding covering grade of second user, then described second is used
The starting resource scheduling offset time of the corresponding covering grade in family is set greater than or is equal to the corresponding covering of first user
The end time of the corresponding scheduling interval of grade.
A kind of possible realization method, processing unit 302 are specifically used for：
According to the corresponding covering grade of the M user equipment, the number of the corresponding search space of the covering grade is determined
The size of mesh and each search space；According to the size of the number of the search space of the covering grade and each search space,
Determine the scheduling range of the covering grade；Wherein, the size of the search space of the covering grade and the covering grade be just
It is related；Described search space is the minimum period that the base station is the user equipment distribution NPDCCH.
A kind of possible realization method, processing unit 302 are specifically used for：
According to the quantity for the user equipment that the search capability of the base station and needs are dispatched, the scheduling range is determined.
A kind of possible realization method, processing unit 302 are additionally operable to：
If in the scheduling interval, available NPDCCH is not found, then under the user equipment is added for the base station
One dispatching cycle is scheduled.
The embodiment of the present application obtains the covering grade of M user equipment by base station, and M is the integer more than 0；The base station
The user equipment of identical covering grade will be belonged in the M user equipment as one group, and determined and every group of user equipment
The corresponding starting resource scheduling offset time of covering grade and scheduling range；The base station is in every group of corresponding of user equipment
It is the dispatching user facility NPDCCH in beginning scheduling of resource offset time and the corresponding scheduling interval of scheduling range.It can be with
Realize the resource that NPDCCH is allocated according to the user equipment of different covering grades so that the small user equipment of resource requirement obtains
Less PDCCH resource, the big user equipment of resource requirement is taken to obtain more PDCCH resource, avoid the wave of PDCCH resource
Take, improves the utilization rate of PDCCH resource.In addition, the scheduling interval, which includes multiple covering grades, corresponds to the narrow of distribution
Search space with Physical Downlink Control Channel NPDCCH.Ensure that within a dispatching cycle, the M user equipment can be
All scheduling is completed in corresponding scheduling interval, and in scheduling process, it is only necessary to the NPDCCH in the corresponding scheduling interval of search
Scheduling can be completed, greatly improve dispatching efficiency.
It will be understood by those skilled in the art that embodiments herein can be provided as method, apparatus (equipment) or computer
Program product.Therefore, in terms of the application can be used complete hardware embodiment, complete software embodiment or combine software and hardware
Embodiment form.Moreover, the application can be used in one or more wherein include computer usable program code meter
The computer journey implemented in calculation machine usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of sequence product.
The application is flow chart of the reference according to method, apparatus (equipment) and computer program product of the embodiment of the present application
And/or block diagram describes.It should be understood that each flow in flowchart and/or the block diagram can be realized by computer program instructions
And/or the combination of the flow and/or box in box and flowchart and/or the block diagram.These computer programs can be provided to refer to
Enable the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate
One machine so that by the instruction that computer or the processor of other programmable data processing devices execute generate for realizing
The device for the function of being specified in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although the preferred embodiment of the application has been described, created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out the application essence of the various modification and variations without departing from the application
God and range.In this way, if these modifications and variations of the application belong to the range of the application claim and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (10)
1. a kind of dispatching method of physical channel resources, which is characterized in that it is applied to narrowband Internet of Things, including：
Base station obtains the covering grade of M user equipment, and M is positive integer；
The base station determines the starting resource scheduling biasing of each user equipment according to the covering grade of the M user equipment
Time and scheduling range；
The base station dispatches offset time according to the starting resource of each user equipment and scheduling range determines each use
The corresponding scheduling interval of family equipment；
The base station controls in the corresponding scheduling interval of each user equipment for dispatching user facility narrowband physical down
Channel NPDCCH.
2. the method as described in claim 1, which is characterized in that the base station according to the covering grade of the M user equipment,
Determine the starting resource scheduling offset time of each user equipment, including：
The base station is if it is determined that the corresponding covering grade of the first user is less than the corresponding covering grade of second user, then by described the
The corresponding covering grade of two users starting resource scheduling offset time be set greater than or equal to first user it is corresponding
The end time of the corresponding scheduling interval of covering grade.
3. method as claimed in claim 1 or 2, which is characterized in that the base station is according to the covering etc. of the M user equipment
Grade, determines the scheduling range of each user equipment, including：
The base station determines the corresponding search space of the covering grade according to the corresponding covering grade of the M user equipment
Number and each search space size；
The base station determines the covering according to the size of the number and each search space of the search space of the covering grade
The scheduling range of grade；
Wherein, the size of the search space of the covering grade and the covering grade positive correlation；Described search space is described
Base station is the minimum period that the user equipment distributes NPDCCH.
4. method as claimed in claim 1 or 2, which is characterized in that the base station is according to the covering etc. of the M user equipment
Grade, determines the scheduling range of each user equipment, including：
The quantity for the user equipment that the base station is dispatched according to the search capability and needs of the base station determines the scheduling model
It encloses.
5. method as claimed in claim 1 or 2, which is characterized in that the method further includes：
If the base station in the scheduling interval, does not find available NPDCCH, then the base station adds the user equipment
Enter and is scheduled next dispatching cycle.
6. a kind of dispatching device of physical channel resources, which is characterized in that it is applied to narrowband Internet of Things, including：
Acquiring unit, the covering grade for obtaining M user equipment, M are positive integer；
Processing unit determines the starting resource scheduling of each user equipment for the covering grade according to the M user equipment
Offset time and scheduling range；Offset time is dispatched according to the starting resource of each user equipment and scheduling range is true
Determine the corresponding scheduling interval of each user equipment；It is the user equipment tune in the corresponding scheduling interval of each user equipment
Spend narrowband Physical Downlink Control Channel NPDCCH.
7. device as claimed in claim 6, which is characterized in that the processing unit is specifically used for：
If it is determined that the corresponding covering grade of the first user is less than the corresponding covering grade of second user, then by the second user pair
The starting resource scheduling offset time for the covering grade answered is set greater than or is equal to the corresponding covering grade of first user
The end time of corresponding scheduling interval.
8. device as claimed in claims 6 or 7, which is characterized in that the processing unit is specifically used for：
According to the corresponding covering grade of the M user equipment, determine the corresponding search space of the covering grade number and
The size of each search space；According to the size of the number of the search space of the covering grade and each search space, determine
The scheduling range of the covering grade；Wherein, the size of the search space of the covering grade and the covering grade positive correlation；
Described search space is the minimum period that the base station is the user equipment distribution NPDCCH.
9. device as claimed in claims 6 or 7, which is characterized in that the processing unit is specifically used for：
According to the quantity for the user equipment that the search capability of the base station and needs are dispatched, the scheduling range is determined.
10. device as claimed in claims 6 or 7, which is characterized in that the processing unit is additionally operable to：
If in the scheduling interval, available NPDCCH is not found, then the base station user equipment is added next
Dispatching cycle is scheduled.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810436465.XA CN108616993B (en) | 2018-05-09 | 2018-05-09 | Scheduling method and device of physical channel resources |
| PCT/CN2018/125401 WO2019214264A1 (en) | 2018-05-09 | 2018-12-29 | Physical channel resource scheduling method, apparatus, and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810436465.XA CN108616993B (en) | 2018-05-09 | 2018-05-09 | Scheduling method and device of physical channel resources |
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| CN108616993A true CN108616993A (en) | 2018-10-02 |
| CN108616993B CN108616993B (en) | 2021-03-19 |
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| WO (1) | WO2019214264A1 (en) |
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| CN109548167A (en) * | 2018-12-10 | 2019-03-29 | 京信通信系统（中国）有限公司 | Coverage area self-adapting regulation method, device, computer storage medium and equipment |
| WO2019214264A1 (en) * | 2018-05-09 | 2019-11-14 | 京信通信系统（中国）有限公司 | Physical channel resource scheduling method, apparatus, and base station |
| CN111107631A (en) * | 2018-10-26 | 2020-05-05 | 财团法人资讯工业策进会 | Internet of things base station and resource arrangement method thereof |
| WO2020164138A1 (en) * | 2019-02-15 | 2020-08-20 | 华为技术有限公司 | Monitoring method and apparatus |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2019214264A1 (en) | 2019-11-14 |
| CN108616993B (en) | 2021-03-19 |
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