CN108770034A - The low energy consumption multicasting method of multicast cluster is used in a kind of wireless cellular network - Google Patents
The low energy consumption multicasting method of multicast cluster is used in a kind of wireless cellular network Download PDFInfo
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- CN108770034A CN108770034A CN201810472514.5A CN201810472514A CN108770034A CN 108770034 A CN108770034 A CN 108770034A CN 201810472514 A CN201810472514 A CN 201810472514A CN 108770034 A CN108770034 A CN 108770034A
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- 238000005265 energy consumption Methods 0.000 title claims abstract description 30
- 230000001413 cellular effect Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 36
- 238000004891 communication Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/04—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources
- H04W40/10—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources based on available power or energy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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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
- H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
- H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
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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
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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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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- 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 low energy consumption multicasting method of multicast cluster is used in a kind of wireless cellular network, it calculates first when each node forwards data packet as relay node with different transmission powers from one data packet of base station multicast to the total power consumption desired value of all receiving nodes, then choose the transmission power that node and transmission power shelves with minimum total power consumption desired value are used as relay node and it, each data packet of the multicast to node is wanted finally for base station, first the data packet is sent repeatedly from base station to relay node until relay node has correctly received the packet, the data packet is sent until all other receiving node has correctly received the packet with identified transmission power repeatedly by relay node again.The present invention can reduce the total power consumption of multicast node in multicast cluster in wireless cellular network.
Description
Technical Field
The invention relates to a low-energy multicast method for a multicast cluster in a wireless cellular network, which is suitable for data multicast from a base station to a receiving node when a multicast receiving node is positioned in a small area in the wireless cellular network.
Background
With the progress of communication technology, the size of users of mobile wireless networks has increased dramatically, which has resulted in a dramatic increase in data traffic in wireless cellular networks, placing tremendous pressure on base stations in the cellular network.
In wireless cellular networks, there are often some users requesting the same data, such as the latest information distribution and file distribution, so multicast traffic accounts for a large part of the total traffic. In a reliable multicast scheme of a wireless cellular network, a base station repeatedly transmits the same data packet until it is received by all receivers, resulting in a large multicast traffic load borne by the base station and a large amount of reception energy consumption at a node side.
As a technique for effectively reducing the load of a base station in the next generation of mobile communication, device-to-device communication (abbreviated as D2D communication) in a wireless cellular network has been greatly regarded in recent years by the scientific research and industrial fields. Therefore, the design of the multicast method based on the D2D communication has very important significance. From the physical location distribution of multicast users, multicast scenarios can be divided into the following two categories: (1) multicasting data from the BS to users scattered throughout the cell; (2) data is multicast from a BS to a plurality of users in a small area (e.g., an office building) in close proximity to each other, and multicast users that are capable of D2D communication with each other are referred to as a D2D multicast cluster.
The existing multicast method for the D2D multicast cluster does not consider the problem of energy consumption of nodes, and the energy consumption is a very important performance index to be considered in the wireless network. Multicast methods that do not take into account node energy consumption will result in relatively high node-side energy consumption.
Disclosure of Invention
In order to solve the problem that the existing multicast method for the D2D multicast cluster can cause higher energy consumption of node ends, the invention provides a low-energy-consumption multicast method for the multicast cluster in a wireless cellular network, and the method jointly optimizes the selection of relay nodes in the D2D multicast cluster and the selection of transmission power to achieve lower total node energy consumption.
In order to solve the technical problems, the invention provides the following technical scheme:
a low energy multicast method for a multicast cluster in a wireless cellular network, the method comprising the steps of:
1) for a multicast cluster consisting of N receiving nodes adjacent to each other, for i equal to 1,2, …, N, calculating expected receiving energy consumption of the receiving node i for correctly receiving a data packet from the base station according to formula (1)
Wherein, Pi BIs the wireless channel packet reception rate, e, from the base station to the relay node irxEnergy consumption required for a node to receive a data packet;
2)representing the expected number of transmissions per packet when node i acts as a relay node and transmits packets at kth transmission power, K ∈ {1, 2.., K } being the number of steps of transmission power available to the node,
for each pair of i e {1,2, …, N } and K e {1,2
Wherein, I ═ {1, 2.., N },is used when the node i usesThe packet receiving rate when the kth power transmits a data packet to the node j;
3) for 1,2, …, N, the expected total receiving energy consumption of all other receiving nodes when the node i sends a data packet to other receiving nodes with the kth gear sending power is calculated according to the formula (3) as
4) For each pair of i e {1,2, …, N } and K e {1, 2.. multidot.K }, the expected total energy consumption for all nodes to correctly receive a data packet when the node i is used as a relay node and forwards the data packet with the kth gear transmission power is calculated according to formula (4)
Wherein,the transmission energy consumption required by the node to transmit a data packet with the kth transmission power is represented;
5) picking out the value with the minimum in the joint values of all i e {1,2, …, N } and K e {1,2The node i and the transmission power gear k of the value are used as a relay node and the transmission power thereof;
6) for each data packet which is multicast to the node by the base station, the base station repeatedly sends the data packet to the relay node i until the relay node i correctly receives the data packet, and then the relay node i repeatedly sends the data packet by the sending power determined in the previous step until all other receiving nodes correctly receive the data packet.
The invention has the beneficial effects that: the invention optimizes the selection of the relay nodes in the D2D multicast cluster and the selection of the transmission power in a combined manner, so that the total energy consumption of all the nodes in the D2D multicast cluster is minimized, and the effect of energy conservation is achieved.
Drawings
Fig. 1 is a schematic diagram of multicast based device-to-device communication in a wireless cellular network.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1, a low energy multicast method for a multicast cluster in a wireless cellular network, the method comprising the steps of:
1) for a multicast cluster consisting of N receiving nodes adjacent to each other, for i equal to 1,2, …, N, calculating expected receiving energy consumption of the receiving node i for correctly receiving a data packet from the base station according to formula (1)
Wherein, Pi BIs the wireless channel packet reception rate, e, from the base station to the relay node irxEnergy consumption required for a node to receive a data packet;
2)representing the expected number of times of transmission of each packet when the node i is used as a relay node and transmits a data packet with the kth transmission power, wherein K belongs to {1,2The step number of the transmission power is calculated by the following formula (2) for the joint value of each pair i belonging to {1,2, …, N } and K belonging to {1,2
Wherein, I ═ {1, 2.., N },the packet receiving rate is when the node i uses the kth power to send a data packet to the node j;
3) for 1,2, …, N, the expected total receiving energy consumption of all other receiving nodes when the node i sends a data packet to other receiving nodes with the kth gear sending power is calculated according to the formula (3) as
4) For each pair of i e {1,2, …, N } and K e {1, 2.. multidot.K }, the expected total energy consumption for all nodes to correctly receive a data packet when the node i is used as a relay node and forwards the data packet with the kth gear transmission power is calculated according to formula (4)
Wherein,the transmission energy consumption required by the node to transmit a data packet with the kth transmission power is represented;
5) picking out the value with the minimum in the joint values of all i e {1,2, …, N } and K e {1,2The node i and the transmission power gear k of the value are used as a relay node and the transmission power thereof;
6) for each data packet which is multicast to the node by the base station, the base station repeatedly sends the data packet to the relay node i until the relay node i correctly receives the data packet, and then the relay node i repeatedly sends the data packet by the sending power determined in the previous step until all other receiving nodes correctly receive the data packet.
Aiming at a multicast cluster consisting of N nodes, the packet receiving rate of a cellular downlink, the packet receiving rates of the nodes under different transmission power levels and the transmission energy consumption required by the nodes to transmit a data packet with the transmission power of the kth level are knownEnergy consumption e required for a node to receive a data packetrxSpecific embodiments of the present invention are illustrated.
First, for i-1, 2, …, N, the computing node i repeatedly receives a data packet from the base station until the expected value of the reception energy required for successfully receiving the packet
Then, for each pair of i e {1,2, …, N } and K e {1,2
Then, for 1,2, …, N, the expected total receiving energy consumption of all other receiving nodes when the node i sends a data packet to other receiving nodes with the k-th gear sending power is calculated
Picking out the value with the minimum in the joint values of all i e {1,2, …, N } and K e {1,2The value node i and the transmission power level k serve as a relay node and its transmission power.
For each data packet which is multicast to the node by the base station, the base station repeatedly sends the data packet to the relay node i until the relay node i correctly receives the data packet, and then the relay node i repeatedly sends the data packet with the determined sending power until all other receiving nodes correctly receive the data packet.
Claims (1)
1. A low energy multicast method for a multicast cluster in a wireless cellular network, characterized by: the low-energy multicast method for the multicast cluster in the wireless cellular network comprises the following steps:
1) for a multicast cluster consisting of N receiving nodes adjacent to each other, calculating expected receiving energy consumption of the receiving node i for correctly receiving a data packet from the base station according to formula (1) for i 1,2
Wherein, Pi BIs the wireless channel packet reception rate, e, from the base station to the relay node irxEnergy consumption required for a node to receive a data packet;
2)representing the expected number of times of transmission of each packet when the node i acts as a relay node and transmits a data packet with the kth transmission power, K being the number of steps of the transmission power available to the node, and calculating the joint value of the K and K for each pair of i being the number of steps of {1,2
Wherein, I ═ {1, 2.., N },the packet receiving rate is when the node i uses the kth power to send a data packet to the node j;
3) for i 1, 2.. times.n, the expected total receiving energy consumption of all other receiving nodes when the node i sends a data packet to other receiving nodes at the kth transmission power is calculated according to the formula (3) as
4) For each pair of i e {1, 2.,. An } and K e {1, 2.,. An } joint value, the expected total energy consumption of all nodes for correctly receiving a data packet when the node i is used as a relay node and forwards the data packet by using the transmission power of the kth gear is calculated according to the formula (4)
Wherein,the transmission energy consumption required by the node to transmit a data packet with the kth transmission power is represented;
5) picking out the value with the minimum in the joint values of all i e {1, 2.. multidata., N } and K e {1, 2.. multidata., K }The node i and the transmission power gear k of the value are used as a relay node and the transmission power thereof;
6) for each data packet which is multicast to the node by the base station, the base station repeatedly sends the data packet to the relay node i until the relay node i correctly receives the data packet, and then the relay node i repeatedly sends the data packet by the sending power determined in the previous step until all other receiving nodes correctly receive the data packet.
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| US20150023267A1 (en) * | 2012-01-30 | 2015-01-22 | Lg Electronics Inc. | Method for transmitting and receiving feedback information on d2d transmission data in wireless communication system for supporting d2d communication and apparatus therefor |
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