CN111083745B - Scheduling method and device - Google Patents
Scheduling method and device Download PDFInfo
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- CN111083745B CN111083745B CN201811219613.9A CN201811219613A CN111083745B CN 111083745 B CN111083745 B CN 111083745B CN 201811219613 A CN201811219613 A CN 201811219613A CN 111083745 B CN111083745 B CN 111083745B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/26—Resource reservation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/365—Power headroom reporting
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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
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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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
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application discloses a scheduling method and a scheduling device, which comprise the following steps: when each scheduling time arrives, determining whether a private network voice user with limited transmission power exists in users needing scheduling currently; when the private network voice user exists, resources are firstly distributed to the private network voice user by utilizing the narrow-band NB reserved resources; and then, distributing resources for other users to be scheduled at the scheduling time according to a preset resource use principle by utilizing the remaining system uplink NB resources after the distribution, wherein the NB reserved resources belong to a part of the system uplink NB resources, and the resource use principle comprises that eMTC users cannot use the NB reserved resources. By adopting the method and the device, the problem of uplink voice interference of the eMTC UE to the private network cluster can be solved, and the voice quality is effectively improved.
Description
Technical Field
The present invention relates to mobile communication technologies, and in particular, to a scheduling method and apparatus.
Background
In a private network broadband cluster network, enhanced machine communication (eMTC) characteristics need to be deployed to carry services with characteristics of the internet of things in various private networks.
The maximum bandwidth supported by the eMTC customer premise equipment (UE) is 1.4MHz, that is, the bandwidth corresponding to the maximum 6RB, the maximum uplink/downlink TBS are 1000, the number of antennas is 1, and the maximum uplink transmit power is 20dBm (optional).
Because the baseband and radio frequency bandwidth of the eMTC UE is 1.4MHz, 3GPP defines non-overlapping continuous 6 PRBs as a narrow band (narrow band, NB for short), the system bandwidth is divided into a plurality of NBs, and the eMTC UE is restricted by the NB and cannot be scheduled across the NB.
In order to take the Coverage depth and capacity performance of eMTC UEs into account, the 3GPP protocol introduces a Coverage Enhancement class (CE for short). 4 different coverage levels (CE Level 0-3) are divided in an idle state, and different coverage levels can be selected by the idle state eMTC UE according to actually measured RSRP. For the connected state, two coverage modes of CE Mode A and CE Mode B are divided, a corresponding mapping relation exists between the coverage level of the idle state and the coverage Mode of the connected state, and the overhead can be greatly saved through differential management of different coverage levels.
eMTC features are currently generally deployed on private network LTE broadband clusters. In order to ensure deep coverage, the eMTC protocol specifies that, for the eMTC UE of the CE Mode B, the maximum transmission power is used for transmission, and at this time, the eMTC UE may interfere with the uplink main speech of the private network cluster, and may cause the problems of speech loss and the like, and in a serious case, the private network cluster speech may be unavailable.
Disclosure of Invention
In view of this, the present invention mainly aims to provide a scheduling method and apparatus, which can solve the problem of uplink voice interference of eMTC UEs to a private network cluster.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a method of scheduling, comprising:
when each scheduling time arrives, determining whether a private network voice user with limited transmission power exists in users needing scheduling currently;
when the private network voice user exists, resources are firstly distributed to the private network voice user by utilizing the narrow-band NB reserved resources; and then, distributing resources for other users to be scheduled at the scheduling time according to a preset resource use principle by utilizing the remaining system uplink NB resources after the distribution, wherein the NB reserved resources belong to a part of the system uplink NB resources, and the resource use principle comprises that eMTC users cannot use the NB reserved resources.
Preferably, the method further comprises:
and when the private network voice user does not exist, allocating resources for the user to be scheduled at the scheduling moment by utilizing NB resources of the system.
Preferably, the determining whether there is a private network voice user with limited transmission power among users that need to be scheduled at the scheduling time includes:
judging whether a private network voice user exists in users needing to be scheduled at the scheduling moment, if not, judging that the private network voice user with limited transmitting power does not exist; if the power headroom report PHR exists, judging whether the private network voice user has power headroom according to the power headroom report PHR reported by the private network voice user for each private network voice user, if not, judging that the user belongs to the private network voice user with limited transmission power, otherwise, judging that the user does not belong to the private network voice user with limited transmission power.
Preferably, the resource usage principle further includes: non-private network voice users may not use the NB to reserve resources.
A scheduling apparatus, comprising:
the judging unit is used for determining whether a private network voice user with limited transmitting power exists in the users needing to be scheduled at present when each scheduling time arrives;
a resource allocation unit, configured to, when the private network voice user exists, first allocate resources to the private network voice user by using narrowband NB reserved resources; and then, distributing resources for other users to be scheduled at the scheduling time according to a preset resource use principle by utilizing the remaining system uplink NB resources after the distribution, wherein the NB reserved resources belong to a part of the system uplink NB resources, and the resource use principle comprises that eMTC users cannot use the NB reserved resources.
Preferably, the resource allocation unit is further configured to allocate resources to the user to be scheduled at the scheduling time by using NB resources of the system when the private network voice user does not exist.
Preferably, the determining unit is configured to determine whether a dedicated network voice user exists in users that need to be scheduled at the scheduling time, and if not, determine that the dedicated network voice user with the limited transmission power does not exist; if the power headroom report PHR exists, judging whether the private network voice user has power headroom according to the power headroom report PHR reported by the private network voice user for each private network voice user, if not, judging that the user belongs to the private network voice user with limited transmission power, otherwise, judging that the user does not belong to the private network voice user with limited transmission power.
Preferably, the resource usage principle further includes: non-private network voice users may not use the NB to reserve resources.
A scheduling apparatus, comprising:
a memory; and a processor coupled to the memory, the processor configured to perform the method as described above based on instructions stored in the memory.
A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, carries out the above-mentioned method.
In summary, the scheduling method and apparatus provided by the present invention allocate resources to power-limited private network voice users by using reserved uplink NB resources, and prohibit the eMTC users from using the reserved uplink NB resources, so that the private network voice users at the edge point and the eMTC UEs can be staggered in the frequency domain, thereby reducing uplink voice interference of the eMTC UEs to the private network cluster, improving voice quality, and effectively solving the uplink voice interference problem of the eMTC UEs to the private network cluster.
Drawings
FIG. 1 is a schematic flow chart of a method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic flowchart of a method according to an embodiment of the present invention, and as shown in fig. 1, a scheduling method implemented by the embodiment mainly includes:
Considering that the voice users affected by the eMTC UE are usually the voice users at the edge, since these users are at the edge, the used transmission power tends to reach the maximum power value for normal communication, i.e. belongs to the power-limited users. Therefore, in this step, when each scheduling time arrives, a dedicated network voice user with limited transmission power needs to be identified from users to be scheduled, so that resources of the user are staggered from resources of the eMTC user in the frequency domain during scheduling, so as to reduce interference of the eMTC user on the dedicated network voice user.
Here, the scheduling time is a scheduling subframe.
Preferably, the following method may be specifically adopted to determine whether there is a dedicated network voice user with limited transmission power among users that need to be scheduled at the scheduling time:
judging whether a private network voice user exists in users needing to be scheduled at the scheduling moment, if not, judging that the private network voice user with limited transmitting power does not exist; if the Power Headroom Report (PHR) exists, judging whether the private network voice user has power headroom according to the Power Headroom Report (PHR) reported by the private network voice user for each private network voice user, if not, judging that the user belongs to the private network voice user with limited transmission power, otherwise, judging that the user does not belong to the private network voice user with limited transmission power.
102, when the private network voice user exists, allocating resources for the private network voice user by utilizing NB reserved resources; and then, distributing resources for other users to be scheduled at the scheduling time according to a preset resource use principle by utilizing the remaining system uplink NB resources after the distribution, wherein the NB reserved resources belong to a part of the system uplink NB resources, and the resource use principle comprises that eMTC users cannot use the NB reserved resources.
As described above, here, the preset NB is used to reserve resources, resources are allocated to the private network voice user whose transmission power is limited, and then the remaining system NB resources (including the remaining resources in the uplink NB resources preset for the private network voice after the allocation) are used to allocate resources to other users to be scheduled, and when the remaining system NB resources are used to schedule other users, the eMTC UE is prevented from using the NB reserved resources. Therefore, on one hand, the resources of the private network voice user with limited sending power and the eMTC UE are staggered on the frequency domain, so that the interference of the eMTC UE on the private network voice user is reduced, and the voice quality is effectively improved; on the other hand, the reserved NB resources left after the resources are allocated to the private network voice users can also be allocated to other LTE users except eMTC UE, so that the resource utilization rate can be fully improved.
In practical application, other users except the private network voice user can be limited to use the reserved resource of the NB, so that the voice quality of the private network voice user can be improved to the maximum extent. That is, preferably, the resource usage principle further includes: non-private network voice users may not use the NB to reserve resources.
In practical applications, those skilled in the art can set the amount of the reserved resources of the NB according to practical needs. For example, a parameter speakrrsvnbcount may be set for each cell, where the parameter indicates the number of reserved resources for the NB, and may be set to 1, and the default is from a low frequency, and for the NB, eMTC and other private network services cannot be used.
In practical applications, when the private network voice user does not exist, a conventional scheduling method may be adopted, that is, an existing scheduling method may be adopted, and NB resources of the system are utilized to allocate resources to the user to be scheduled at the scheduling time, which is not described herein again.
Fig. 2 is a schematic structural diagram of a scheduling apparatus corresponding to the foregoing method, and as shown in fig. 2, the apparatus includes:
the judging unit is used for determining whether a private network voice user with limited transmitting power exists in the users needing to be scheduled at present when each scheduling time arrives;
a resource allocation unit, configured to, when the private network voice user exists, first allocate resources to the private network voice user by using narrowband NB reserved resources; and then, distributing resources for other users to be scheduled at the scheduling time according to a preset resource use principle by utilizing the remaining system uplink NB resources after the distribution, wherein the NB reserved resources belong to a part of the system uplink NB resources, and the resource use principle comprises that eMTC users cannot use the NB reserved resources.
Preferably, the resource allocation unit is further configured to allocate resources to the user to be scheduled at the scheduling time by using NB resources of the system when the private network voice user does not exist.
Preferably, the determining unit is configured to determine whether a dedicated network voice user exists in users that need to be scheduled at the scheduling time, and if not, determine that the dedicated network voice user with the limited transmission power does not exist; if the power headroom report PHR exists, judging whether the private network voice user has power headroom according to the power headroom report PHR reported by the private network voice user for each private network voice user, if not, judging that the user belongs to the private network voice user with limited transmission power, otherwise, judging that the user does not belong to the private network voice user with limited transmission power.
Preferably, the resource usage principle further includes: non-private network voice users may not use the NB to reserve resources.
A scheduling apparatus, comprising:
a memory; and a processor coupled to the memory, the processor configured to perform the method as described above based on instructions stored in the memory.
A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, carries out the above-mentioned method.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method of scheduling, comprising:
when each scheduling time arrives, determining whether a private network voice user with limited transmission power exists in users needing scheduling currently;
when the private network voice user exists, resources are firstly distributed to the private network voice user by utilizing the narrow-band NB reserved resources; and then, distributing resources for other users to be scheduled at the scheduling time according to a preset resource use principle by utilizing the remaining system uplink NB resources after the distribution, wherein the NB reserved resources belong to a part of the system uplink NB resources, and the resource use principle comprises that eMTC users cannot use the NB reserved resources.
2. The method of claim 1, further comprising:
and when the private network voice user does not exist, allocating resources for the user to be scheduled at the scheduling moment by using the uplink NB resources of the system.
3. The method of claim 1, wherein the determining whether there is a dedicated voice user with limited transmission power among the users to be scheduled at the scheduling time comprises:
judging whether a private network voice user exists in users needing to be scheduled at the scheduling moment, if not, judging that the private network voice user with limited transmitting power does not exist; if the power headroom report PHR exists, judging whether the private network voice user has power headroom according to the power headroom report PHR reported by the private network voice user for each private network voice user, if not, judging that the user belongs to the private network voice user with limited transmission power, otherwise, judging that the user does not belong to the private network voice user with limited transmission power.
4. The method of claim 1, wherein the resource usage rules further comprise: non-private network voice users may not use the NB to reserve resources.
5. A scheduling apparatus, comprising:
the judging unit is used for determining whether a private network voice user with limited transmitting power exists in the users needing to be scheduled at present when each scheduling time arrives;
a resource allocation unit, configured to, when the private network voice user exists, first allocate resources to the private network voice user by using narrowband NB reserved resources; and then, distributing resources for other users to be scheduled at the scheduling time according to a preset resource use principle by using the remaining system uplink NB resources after the distribution, wherein the NB reserved resources belong to a part of the system uplink NB resources, and the resource use principle comprises that eMTC users cannot use the NB reserved resources.
6. The apparatus of claim 5, wherein the resource allocation unit is further configured to allocate resources to the user to be scheduled at the current scheduling time by using NB resources of a system when the private network voice user does not exist.
7. The apparatus according to claim 5, wherein the determining unit is configured to determine whether a dedicated network voice user exists in users that need to be scheduled at the scheduling time, and if not, determine that the dedicated network voice user with limited transmission power does not exist; if the power headroom report PHR exists, judging whether the private network voice user has power headroom according to the power headroom report PHR reported by the private network voice user for each private network voice user, if not, judging that the user belongs to the private network voice user with limited transmission power, otherwise, judging that the user does not belong to the private network voice user with limited transmission power.
8. The apparatus of claim 5, wherein the resource usage rules further comprise: non-private network voice users may not use the NB to reserve resources.
9. A scheduling apparatus, comprising:
a memory; and a processor coupled to the memory, the processor configured to perform the method of any of claims 1-4 based on instructions stored in the memory.
10. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the method of any one of claims 1-4.
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