CN108093464B - Resource allocation method and device - Google Patents

Resource allocation method and device Download PDF

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Publication number
CN108093464B
CN108093464B CN201611035126.8A CN201611035126A CN108093464B CN 108093464 B CN108093464 B CN 108093464B CN 201611035126 A CN201611035126 A CN 201611035126A CN 108093464 B CN108093464 B CN 108093464B
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service
resource
resource pool
pools
allocation
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CN201611035126.8A
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CN108093464A (en
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张二青
周欣
解芳
姜春霞
胡炜
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Potevio Information Technology Co Ltd
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Potevio Information Technology Co Ltd
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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
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • 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
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
    • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application discloses a resource allocation method and a device, wherein the method comprises the following steps: the base station periodically allocates resource pools for V2P service and P2V service according to a preset resource pool adjustment period and a resource pool allocation principle, wherein the resource pool allocation principle comprises: the resource pools of the V2P service and the resource pools of the P2V service do not overlap in time; when the base station needs to allocate resources for the V2P service or the P2V service, selecting idle resources from the resource pool allocated for the corresponding service in the current resource pool adjustment period for allocation, and notifying the allocation result to the corresponding terminal. The invention can reduce the energy consumption of the pedestrian terminal and ensure the normal operation of the V2P and P2V services.

Description

Resource allocation method and device
Technical Field
The present invention relates to mobile communication technologies, and in particular, to a resource allocation method and apparatus.
Background
With the rapid development of modern automotive industry technology, the automotive industry is becoming one of the pillar industries that promote the development of the whole society and economy. The increase of the number of the automobiles brings great convenience to production and life of people, promotes the improvement of productivity, and greatly improves the traveling environment of people. However, the problem caused by the explosive increase of the number of vehicles has been increasing in recent years, and traffic accidents and traffic jams have seriously affected traffic safety. At present, most of work is also post-processing (such as calling for an alarm after a car collision, and then processing), and safety monitoring and early warning work is still insufficient, so that the development of a wireless communication technology between vehicles and the construction of an intelligent traffic system become a research hotspot in the information field.
The Vehicle-road cooperation V2X (Vehicle to X) technology comprises Vehicle-Vehicle (V2V), Vehicle-person (V2P), Vehicle-road (V2I) and other technologies, and means that the technologies such as wireless communication, sensing detection and the like are used for collecting information of vehicles, roads, environments and the like, and full-time and reliable traffic information is provided for traffic participants through real-time, efficient and bidirectional information interaction and sharing among the vehicles, the vehicles and any surrounding nodes, so that the safety of a road system is effectively improved, the traffic jam is relieved, and the traffic environment is improved. V2P is a technology of vehicle-to-pedestrian communication in V2X, and compared with technologies such as V2V and V2I/N, the energy consumption of equipment of a pedestrian terminal is an important problem to be solved urgently in order to guarantee normal communication between the vehicle and the pedestrian due to the fact that the energy of the pedestrian handheld terminal is limited.
At present, no configuration scheme of V2X resources is provided, which can reduce the energy consumption of pedestrian terminals and ensure the normal operation of V2P and P2V services.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a resource allocation method and apparatus, which can reduce energy consumption of a pedestrian terminal and ensure normal operation of V2P and P2V services.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a method of resource allocation, comprising:
the base station periodically allocates resource pools for V2P service and P2V service according to a preset resource pool adjustment period and a resource pool allocation principle, wherein the resource pool allocation principle comprises: the resource pools of the V2P service and the resource pools of the P2V service do not overlap in time;
when the base station needs to allocate resources for the V2P service or the P2V service, selecting idle resources from the resource pool allocated for the corresponding service in the current resource pool adjustment period for allocation, and notifying the allocation result to the corresponding terminal.
A resource configuration apparatus, comprising:
a resource pool configuration unit, configured to periodically allocate resource pools for V2P services and P2V services according to a preset resource pool adjustment period and a resource pool allocation principle, where the resource pool allocation principle includes: the resource pools of the V2P service and the resource pools of the P2V service do not overlap in time;
and the resource allocation unit is used for selecting idle resources from the resource pools allocated to the corresponding services in the current resource pool adjustment period to allocate when the base station needs to allocate resources for the V2P service or the P2V service, and notifying the allocation result to the corresponding terminal.
In summary, the resource allocation method and apparatus provided by the present invention periodically allocate resources for V2P service or P2V service, and ensure that the resource pools used by V2P and P2V service do not overlap in time, so that the resource pools of V2P service and P2V service can be flexibly adjusted according to actual service requirements, and further resource utilization rate can be improved, and meanwhile, the resource pools of V2P service and P2V service do not overlap in time, and therefore sleep time of a pedestrian terminal can be prolonged, and energy consumption of the terminal can be significantly reduced, thereby ensuring normal operation of V2P and P2V services.
Drawings
FIG. 1 is a schematic flow chart of a method according to an embodiment of the present invention;
FIG. 2 is a first diagram illustrating resource pool configuration according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a resource pool configuration according to an embodiment of the present invention;
FIG. 4 is a third schematic diagram of resource pool configuration according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus 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.
The core idea of the invention is as follows: the configuration of the V2X resource is carried out periodically, and the resource pools used by the V2P and P2V services are ensured not to overlap in time, so that the sleep time of the pedestrian terminal equipment is longer, and the energy expenditure of the pedestrian terminal equipment is effectively reduced.
Fig. 1 is a schematic flowchart of a method according to an embodiment of the present invention, and as shown in fig. 1, the resource allocation method implemented in the embodiment mainly includes:
step 101, a base station periodically allocates resource pools for V2P service and P2V service according to a preset resource pool adjustment period and a resource pool allocation principle, wherein the resource pool allocation principle includes: the resource pools of V2P traffic and P2V traffic do not overlap in time.
Preferably, the resource pool adjustment period satisfies: t is less than or equal to min (T)P2V，TV2P). Wherein T is the resource pool adjustment period, TP2VFor the transmission period, T, of P2V trafficV2PIs the transmission period of the V2P traffic. Specifically, those skilled in the art can meet the requirement that T is less than or equal to min (T) according to actual needsP2V，TV2P) On the premise of (1), setting a proper value of T.
In this step, by periodically allocating resource pools for the V2P service and the P2V service, the resource pools for the V2P service and the P2V service can be dynamically adjusted according to actual service requirements, so that the resource utilization rate can be improved.
On the other hand, by not overlapping the resource pools of the V2P service and the P2V service in terms of time, the sleep time of the pedestrian terminal can be prolonged, and the energy consumption of the terminal is obviously reduced. The specific analysis is as follows:
according to the setting condition of the resource pool adjustment period, the following conditions can be obtained: sleep time T of Pedestrian (PUE) terminal in one resource pool adjustment perioddCan be determined by the formula: t isd＝T-tV2P-tPTIs calculated to obtain, wherein tPTRepresents the sending time, t, of P2V service in one resource pool adjustment periodV2PThe length of time the V2P message was received for the PUE.
Thus, the Pedestrian (PUE) terminal only needs to be in a part of the time (t) in each resource periodV2P) The V2P message is received, and the rest of the time (excluding P2V transmission time t)PT) Can be in a sleep state, so that the energy consumption can be significantly reduced.
In practical application, when allocating resource pools for the V2P service and the P2V service in each resource pool adjustment period, according to different transmission characteristics of an actual scenario, on the premise that a resource pool satisfying the V2P service and a resource pool satisfying the P2V service are not overlapped in time, a relationship between the resource pools for the V2P service and the P2V service and resource pools for other V2X services is further configured in the resource pool allocation principle. Specifically, the following resource pool allocation principles may be adopted to configure the resource pool:
the first resource pool allocation principle comprises: the resource pools of V2P traffic and P2V traffic do not overlap in time; the resource pool of the V2P service is not overlapped with the resource pools of other V2X services in time; the resource pool of P2V traffic does not overlap in time with the resource pools of other V2X traffic.
Based on a first resource pool allocation principle, independent special resource pools are respectively configured for P2V and V2P, and the scheme is suitable for scenes such as pedestrian traffic road sections of densely-populated urban areas and intersections with pedestrian crosswalks. Specifically the time domain resource configuration is shown in fig. 2.
The second resource pool allocation principle includes: the resource pools of V2P traffic and P2V traffic do not overlap in time; the resource pool of the P2V service is not overlapped with the resource pools of other V2X services in time.
Based on the second resource pool allocation principle, an independent resource pool is configured for P2V service, and the resource pool configured for V2P service is a subset of the other V2X resource pools except for V2P and P2V services (in other words, the resource pools have overlapping portions), but the time resources of P2V and V2P are still required to be not overlapped with each other, and the scheme is suitable for pedestrian-dense roads and other scenes. Specifically, the time domain resource configuration is shown in fig. 3.
The third resource pool allocation principle includes: the resource pools of V2P traffic and P2V traffic do not overlap in time; the resource pools of the V2P service and the resource pools of the P2V service are respectively different subsets of a designated resource pool set, and the resource pool set is composed of resource pools of other V2X services except for the V2P service and the P2V service.
Based on the third resource pool allocation principle, the P2V and V2P resource pools are configured as different subsets of the V2X resource pools except for the V2P and P2V services, and the time resources of P2V and V2P are still required to be not overlapped with each other, so that the scheme is suitable for the occasions such as a highway with few pedestrians and suburbs. Specifically, the time domain resource configuration is shown in fig. 4.
Compared with the first and second resource pool allocation principles, the third resource pool allocation principle can significantly improve the resource utilization rate and maximally save the power consumption of the PUE because both P2V and V2P can overlap with other V2X resources except for V2P and P2V services, but the first and second resource pool allocation principles can better ensure the reliability of the P2V service because the P2V resource pool is configured separately. In addition, the second resource pool allocation principle realizes compromise between PUE energy consumption and system resource utilization rate on the basis of ensuring P2V service performance.
In a specific implementation, a person skilled in the art may select an appropriate resource pool allocation principle according to an actual scenario.
In addition, in terms of the configuration signaling of the resource pool, the signaling configuration of the sending pool and the receiving pool (the signaling configuration method is suitable for the first, second, and third resource pool allocation principles) can be implemented in the following manner: for the UE in the RRC connection state, the network side carries out configuration through SIB messages and RRC proprietary messages; for the UE in RRC-idle state, the configuration is carried out by SIB message. Specifically, the configuration of V2P, P2V and V2X reception pool information other than V2P and P2V services is transmitted by a broadcast message SIBx, and at the same time, each transmission pool is configured by an RRC Connection Reconfiguration message or an SIB message.
The specific resource pool configuration information includes a frequency domain resource indication of the resource pool and a time domain resource indication of the resource pool. Wherein the frequency domain resource indication information may indicate available frequency domain resources of the V2P, P2V, and other V2X resource pools except for V2P and P2V traffic; the time domain resource indication information includes a P2V time domain resource indication, a V2P time domain resource indication, and time domain resource indication information of other V2X resource pools except for V2P and P2V traffic. It can indicate the available time domain information of V2P, P2V and other V2X resource pools except for V2P and P2V traffic in the form of bitmap or in the form of jointly using a start position and a time length.
102, when the base station needs to allocate resources for the V2P service or the P2V service, selecting idle resources from the resource pool allocated for the corresponding service in the current resource pool adjustment period for allocation, and notifying the corresponding terminal of the allocation result.
In this step, when resources need to be allocated for the V2P service or the P2V service, resources in the resource pool corresponding to the service are allocated, and a specific allocation method may be implemented by using an existing method, which is not described herein again.
Fig. 5 is a schematic structural diagram of a resource allocation apparatus corresponding to the above method, and as shown in fig. 5, the apparatus includes:
a resource pool configuration unit, configured to periodically allocate resource pools for V2P services and P2V services according to a preset resource pool adjustment period and a resource pool allocation principle, where the resource pool allocation principle includes: the resource pools of the V2P service and the resource pools of the P2V service do not overlap in time;
and the resource allocation unit is used for selecting idle resources from the resource pools allocated to the corresponding services in the current resource pool adjustment period to allocate when the base station needs to allocate resources for the V2P service or the P2V service, and notifying the allocation result to the corresponding terminal.
Preferably, the resource pool allocation principle further includes:
the resource pool of the V2P service is not overlapped with the resource pools of other V2X services in time; the resource pool of the P2V service is not overlapped with the resource pools of other V2X services in time.
Preferably, the resource pool allocation principle further includes:
the resource pool of the P2V service is not overlapped with the resource pools of other V2X services in time.
Preferably, the resource pool allocation principle further includes:
the resource pools of the V2P service and the resource pools of the P2V service are respectively different subsets of a designated resource pool set, and the resource pool set is composed of resource pools of other V2X services except for the V2P service and the P2V service.
Preferably, the resource pool adjustment period satisfies: t is less than or equal to min (T)P2V，TV2P) (ii) a Wherein T is the resource pool adjustment period, TP2VFor the transmission period, T, of P2V trafficV2PIs the transmission period of the V2P traffic.
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 (8)

1. A method for resource allocation, comprising:
the base station periodically allocates resource pools for V2P service and P2V service according to a preset resource pool adjustment period and a resource pool allocation principle, wherein the resource pool allocation principle comprises: the resource pools of the V2P service and the resource pools of the P2V service do not overlap in time; the resource pool adjusting period satisfies:
T≤min(TP2V，TV2P) (ii) a Wherein T is the resource pool adjustment period, TP2VFor the transmission period, T, of P2V trafficV2PIs the transmission period of the V2P traffic;
when the base station needs to allocate resources for the V2P service or the P2V service, selecting idle resources from the resource pool allocated for the corresponding service in the current resource pool adjustment period for allocation, and notifying the allocation result to the corresponding terminal.
2. The method of claim 1, wherein the resource pool allocation principle further comprises:
the resource pool of the V2P service is not overlapped with the resource pools of other V2X services in time; the resource pool of the P2V service is not overlapped with the resource pools of other V2X services in time.
3. The method of claim 1, wherein the resource pool allocation principle further comprises:
the resource pool of the P2V service is not overlapped with the resource pools of other V2X services in time.
4. The method of claim 1, wherein the resource pool allocation principle further comprises:
the resource pools of the V2P service and the resource pools of the P2V service are respectively different subsets of a designated resource pool set, and the resource pool set is composed of resource pools of other V2X services except for the V2P service and the P2V service.
5. A resource allocation apparatus, comprising:
a resource pool configuration unit, configured to periodically allocate resource pools for V2P services and P2V services according to a preset resource pool adjustment period and a resource pool allocation principle, where the resource pool allocation principle includes: the resource pools of the V2P service and the resource pools of the P2V service do not overlap in time; the resource pool adjusting period satisfies:
T≤min(TP2V，TV2P) (ii) a Wherein T is the resource pool adjustment period, TP2VFor the transmission period, T, of P2V trafficV2PIs the transmission period of the V2P traffic;
and the resource allocation unit is used for selecting idle resources from the resource pools allocated to the corresponding services in the current resource pool adjustment period to allocate when the base station needs to allocate resources for the V2P service or the P2V service, and notifying the allocation result to the corresponding terminal.
6. The apparatus of claim 5, wherein the resource pool allocation principle further comprises:
the resource pool of the V2P service is not overlapped with the resource pools of other V2X services in time; the resource pool of the P2V service is not overlapped with the resource pools of other V2X services in time.
7. The apparatus of claim 5, wherein the resource pool allocation principle further comprises:
the resource pool of the P2V service is not overlapped with the resource pools of other V2X services in time.
8. The apparatus of claim 5, wherein the resource pool allocation principle further comprises:
the resource pools of the V2P service and the resource pools of the P2V service are respectively different subsets of a designated resource pool set, and the resource pool set is composed of resource pools of other V2X services except for the V2P service and the P2V service.
CN201611035126.8A 2016-11-23 2016-11-23 Resource allocation method and device Expired - Fee Related CN108093464B (en)

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