CN104244390A - Open loop joint power control method and device of wireless body area network - Google Patents
Open loop joint power control method and device of wireless body area network Download PDFInfo
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- CN104244390A CN104244390A CN201310239273.7A CN201310239273A CN104244390A CN 104244390 A CN104244390 A CN 104244390A CN 201310239273 A CN201310239273 A CN 201310239273A CN 104244390 A CN104244390 A CN 104244390A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000005259 measurement Methods 0.000 claims description 9
- 230000002452 interceptive effect Effects 0.000 claims description 6
- 230000003993 interaction Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000011217 control strategy Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 2
- 238000013480 data collection Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006266 hibernation Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
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Abstract
The invention discloses an open loop joint power control method of a wireless body area network. The open loop joint power control method the wireless body area network comprises the steps that in the interaction process of nodes, frame data carrying out interaction carry the level grade of self transmitting power of the nodes; a local node controls the self transmitting power according to the level grade, carried by the received frame data, of the transmitting power of a correspondent node. The invention further discloses an open loop joint power control device of the wireless body area network. By means of the open loop joint power control method and device of the wireless body area network, dynamic power control over the wireless body area network can be realized.
Description
Technical field
The present invention relates to short distance broadband wireless communications field, refer to a kind of open loop associating power control method and device of wireless body area network especially.
Background technology
Wireless body area network (WBAN, Wireless Body Area Network) technology is the fusion of micro sensing technology, biomedical technology and wireless communication technology, the key technology becoming Internet of Things due to features such as its low-power consumption, high reliability, high throughputs supports, ubiquitous medical services can be provided, become the focus of medical profession, business circles and academia's extensive concern.
WBAN system belongs to short range communication systems, there is following characteristics: WBAN system is mainly used in grouped data collection or the monitoring of local conditions in medical treatment or non-medical field at present, take human body as channel, especially implanting device, changeable tissue parameter result in complicated channel conditions, and human body is very sensitive to electromagnetic reaction, so essential to the control of equipment transmitted power; When equipment implant into body, the volume of battery and life problems are outstanding difficult problems for system; And traditional fixed step size Poewr control method not only follow-up control is poor, but also power loss unnecessary under stable channels situation can be caused; WBAN system group network is flexible, and the star topology formed with everyone with it hub and several node is for elementary cell, and the irregular motion of this topology unit makes the topological structure of system flexible and changeable, causes received power unstable.Therefore, while considering the performance characteristics such as the reliability of WBAN system, multiplicity of network and mobility, effectively process power consumption issues has become one of significant challenge that WBAN technology faces.
IEEE802.15.6 defines the Energy Saving Strategy of wireless body area network from macroscopic perspective, gives the method that power consumption is saved in " dormancy " and " hibernation " two kinds, but dynamic power control strategy is still blank.
Summary of the invention
In view of this, main purpose of the present invention is the open loop associating power control method and the device that provide a kind of wireless body area network, controls with the dynamic power realizing wireless body area network.
For achieving the above object, technical scheme of the present invention is achieved in that
An open loop associating power control method for wireless body area network, the method comprises:
Time mutual between node, carrying out the level grade of carrying described node its own transmission power in mutual frame data;
Local node, according to the level grade of the peer node transmitting power of carrying in the frame data received, carries out the control of its own transmission power.
Preferably, described local node, according to the level grade of the peer node transmitting power of carrying in the frame data received, carries out the control of its own transmission power, comprising:
Described local node, according to the level grade from the peer node transmitting power of carrying in the frame data of peer node, determines the transmitting power of described peer node;
Described local node obtains the received power of described local node by the measurement of physical layer;
Described local node, according to the received power of the transmitting power of described peer node and described local node, calculates under meeting normal running conditions situation, the minimum emissive power level needed for described local node;
Described local node, according to the power level grade preset, determines the power level grade that described minimum emissive power level is corresponding;
Described local node carries determined power level grade in the frame data sent to described peer node, and continues to send data to described peer node with described power level grade, until described power level grade changes.
Preferably, under described local node calculates in the following manner and meets normal running conditions situation, the minimum emissive power level needed for described local node:
Wherein, P
minrepresent described minimum emissive power level, P
trepresent the transmitting power of described peer node, P
trrepresent that described local node can correctly detect and the power threshold of decoded signal, P
rrepresent the received power of described local node, c represents pre-adjustment coefficient.
An open loop joint Power control device for wireless body area network, comprising:
Interactive module, for when carrying out mutual between node, is carrying out the level grade of carrying described node its own transmission power in mutual frame data;
Power control module, for the level grade according to the peer node transmitting power of carrying in the frame data received, carries out the control of local node transmitting power.
Preferably, described power control module comprises:
Opposite end transmitting power determination submodule, for according to the level grade from the peer node transmitting power of carrying in the frame data of peer node, determines the transmitting power of described peer node;
Received power measures submodule, for being obtained the received power of described local node by the measurement of physical layer;
Minimum emissive power calculating sub module, for according to the transmitting power of described peer node and the received power of described local node, calculates under meeting normal running conditions situation, the minimum emissive power level needed for described local node;
Level grade determination submodule, for according to the power level grade preset, determines the power level grade that described minimum emissive power level is corresponding;
Power control module, for notifying that described interactive module carries determined power level grade in the frame data sent to described peer node, and continue to send data to described peer node with described power level grade, until described power level grade changes.
Preferably, under described minimum emissive power calculating sub module calculates in the following manner and meets normal running conditions situation, the minimum emissive power level needed for described local node:
Wherein, P
minrepresent described minimum emissive power level, P
trepresent the transmitting power of described peer node, P
trrepresent that described local node can correctly detect and the power threshold of decoded signal, P
rrepresent the received power of described local node, c represents pre-adjustment coefficient.
The open loop associating power control method of a kind of wireless body area network that the present invention proposes and device, the dynamic power achieving wireless body area network controls, and has filled up the blank of the dynamic power control strategy in wireless body area network standard; Open loop associating power control method is simple, little to overhead requirements, is suitable for the short range communication systems that this power conservation requirement of wireless body area network is high.
Accompanying drawing explanation
The schematic flow sheet one of the open loop associating power control method of a kind of wireless body area network that Fig. 1 provides for the embodiment of the present invention;
The schematic flow sheet two of the open loop associating power control method of a kind of wireless body area network that Fig. 2 provides for the embodiment of the present invention;
The composition structural representation of the open loop joint Power control device of a kind of wireless body area network that Fig. 3 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the present invention is further elaborated.
The open loop associating power control method of a kind of wireless body area network that the embodiment of the present invention provides, as shown in Figure 1, mainly comprises:
Step 101, time mutual between node, is carrying out the level grade of carrying described node its own transmission power in mutual frame data.
The transmitted power level of preset power level grade and correspondence on each node, when certain node transmission frame data, described node carries the information of level grade corresponding to transmitting power in the frame data sent, with the transmitting power of node when sending described frame data described in the recipient informing frame data.
Step 102, local node, according to the level grade of the peer node transmitting power of carrying in the frame data received, carries out the control of its own transmission power.
Specifically comprise:
Local node, according to the level grade from the peer node transmitting power of carrying in the frame data of peer node, determines the transmitting power of described peer node;
Described local node obtains the received power of described local node by the measurement of physical layer;
Described local node, according to the received power of the transmitting power of described peer node and described local node, calculates under meeting normal running conditions situation, the minimum emissive power level needed for described local node;
Described local node, according to the power level grade preset, determines the power level grade that described minimum emissive power level is corresponding;
Described local node carries determined power level grade in the frame data sent to described peer node, and continues to send data to described peer node with described power level grade, until described power level grade changes.
Wherein, under described local node calculates in the following manner and meets normal running conditions situation, the minimum emissive power level needed for described local node:
Wherein, P
minrepresent described minimum emissive power level, P
trepresent the transmitting power of described peer node, P
trrepresent that described local node can correctly detect and the power threshold of decoded signal, P
rrepresent the received power of described local node, c represents pre-adjustment coefficient, and c determines by experiment method.
It should be noted that, the basic thought that the open loop joint Power of the embodiment of the present invention controls is: when channel conditions deteriorate, meet the transmitting power that radiant power improves node in safe range, to ensure that packet is correctly received in guarantee; When channel condition meets transmission reliability, suitably can reduce the transmitting power of node to save energy, extend the working life of node, and then extend the life span of network.Therefore, the embodiment of the present invention proposes the joint Power control strategy of medium education (MAC)/physics (PHY) layer.
It is estimate path loss and interference level according to measurement result that open loop joint Power controls, thus calculates transmitting power.It is the hypothesis that downlink loss and uplink loss are close that open loop joint Power controls, according to this hypothesis, local node estimates the path loss of the signal sent from peer node according to the gross power received, and then the transmitting power estimating that local node is follow-up when launching.Open loop power control method is simple, little to overhead requirements, is suitable for the short range communication systems that this power conservation requirement of wireless body area network is high.
When adopting power control techniques, when node 1 knows the transmitted power P of node 2
tand self can correctly detect and the power threshold P of decoded signal
tr, and the power P of Received signal strength can be measured
rtime, node 1 just can calculate minimum emissive power level needed for sending node according to following formula:
Wherein, c represents pre-adjustment coefficient, and c determines by experiment method.
The selection of transmission power level can have influence on a lot of aspects of network, needs the support of physical layer.After node 1 receives the frame data of node 2, the size of received power can be obtained by the measurement of physical layer, and in the frame data of node 2 transmission, carrying the level grade of the transmitting power of node 2, such node 1 just can determine required minimum emissive power level.Upon receipt of the signals, can received signal strength be known, and power level rank can be obtained.After determining the Minimum Power Level needed for transmission frame data, physical layer is wanted can with these discrete power level rank transmission frame data, and meanwhile, physical layer wants the power can informing the frame data that MAC layer receives.The process that node 1 calculates required minimum emissive power is carried out in MAC layer, reaches the object of node being carried out to power control by the cooperation of physical layer and MAC layer.
Concrete implementation step as shown in Figure 2, mainly comprises:
Step 201, node 2 carries the level class information of its transmitting power in the frame data sent to node 1.Level grade directly can converse actual transmitting power.
Step 202, in physical layer, node 1 obtains received power according to mode by measurement.
Step 203, in MAC layer, under node 1 is met normal running conditions situation according to above-mentioned formulae discovery, the minimum emissive power level needed for node 1.
Step 204, according to M the power level grade preset, node 1 judges the power level grade that minimum emissive power level is corresponding.
Step 205, carries power level grade in the frame data that node 1 sends to node 2.
Step 206, node 1 continues to send data with the power of these level, until power level grade changes.
Carry out in the process of service interaction at node 2 and node 1, no matter be in competition phase or non-competing phase, when needs carry out power control (channel communication quality improves or is deteriorated), the power level class information that node 2 or node 1 can carry by carrying out mutual frame carries out power control, thus improves or reduce the power level of current use.
The embodiment of the present invention also provides a kind of open loop joint Power control device of wireless body area network, as shown in Figure 3, comprising:
Interactive module 10, for when carrying out mutual between node, is carrying out the level grade of carrying described node its own transmission power in mutual frame data;
Power control module 20, for the level grade according to the peer node transmitting power of carrying in the frame data received, carries out the control of local node transmitting power.
Preferably, power control module 20 comprises:
Opposite end transmitting power determination submodule 210, for according to the level grade from the peer node transmitting power of carrying in the frame data of peer node, determines the transmitting power of described peer node;
Received power measures submodule 220, for being obtained the received power of described local node by the measurement of physical layer;
Minimum emissive power calculating sub module 230, for according to the transmitting power of described peer node and the received power of described local node, calculates under meeting normal running conditions situation, the minimum emissive power level needed for described local node;
Level grade determination submodule 240, for according to the power level grade preset, determines the power level grade that described minimum emissive power level is corresponding;
Power control module 250, for notifying that described interactive module 10 carries determined power level grade in the frame data sent to described peer node, and continue to send data to described peer node with described power level grade, until described power level grade changes.
Preferably, under minimum emissive power calculating sub module 230 calculates in the following manner and meets normal running conditions situation, the minimum emissive power level needed for described local node:
Wherein, P
minrepresent described minimum emissive power level, P
trepresent the transmitting power of described peer node, P
trrepresent that described local node can correctly detect and the power threshold of decoded signal, P
rrepresent the received power of described local node, c represents pre-adjustment coefficient.
In sum, the dynamic power that the embodiment of the present invention achieves wireless body area network controls, and has filled up the blank of the dynamic power control strategy in wireless body area network standard; Open loop associating power control method is simple, little to overhead requirements, is suitable for the short range communication systems that this power conservation requirement of wireless body area network is high.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (6)
1. an open loop associating power control method for wireless body area network, it is characterized in that, the method comprises:
Time mutual between node, carrying out the level grade of carrying described node its own transmission power in mutual frame data;
Local node, according to the level grade of the peer node transmitting power of carrying in the frame data received, carries out the control of its own transmission power.
2. the open loop associating power control method of wireless body area network according to claim 1, is characterized in that, described local node, according to the level grade of the peer node transmitting power of carrying in the frame data received, carries out the control of its own transmission power, comprising:
Described local node, according to the level grade from the peer node transmitting power of carrying in the frame data of peer node, determines the transmitting power of described peer node;
Described local node obtains the received power of described local node by the measurement of physical layer;
Described local node, according to the received power of the transmitting power of described peer node and described local node, calculates under meeting normal running conditions situation, the minimum emissive power level needed for described local node;
Described local node, according to the power level grade preset, determines the power level grade that described minimum emissive power level is corresponding;
Described local node carries determined power level grade in the frame data sent to described peer node, and continues to send data to described peer node with described power level grade, until described power level grade changes.
3. the open loop associating power control method of wireless body area network according to claim 2, is characterized in that, under described local node calculates in the following manner and meets normal running conditions situation, and the minimum emissive power level needed for described local node:
Wherein, P
minrepresent described minimum emissive power level, P
trepresent the transmitting power of described peer node, P
trrepresent that described local node can correctly detect and the power threshold of decoded signal, P
rrepresent the received power of described local node, c represents pre-adjustment coefficient.
4. an open loop joint Power control device for wireless body area network, is characterized in that, comprising:
Interactive module, for when carrying out mutual between node, is carrying out the level grade of carrying described node its own transmission power in mutual frame data;
Power control module, for the level grade according to the peer node transmitting power of carrying in the frame data received, carries out the control of local node transmitting power.
5. the open loop joint Power control device of wireless body area network according to claim 4, it is characterized in that, described power control module comprises:
Opposite end transmitting power determination submodule, for according to the level grade from the peer node transmitting power of carrying in the frame data of peer node, determines the transmitting power of described peer node;
Received power measures submodule, for being obtained the received power of described local node by the measurement of physical layer;
Minimum emissive power calculating sub module, for according to the transmitting power of described peer node and the received power of described local node, calculates under meeting normal running conditions situation, the minimum emissive power level needed for described local node;
Level grade determination submodule, for according to the power level grade preset, determines the power level grade that described minimum emissive power level is corresponding;
Power control module, for notifying that described interactive module carries determined power level grade in the frame data sent to described peer node, and continue to send data to described peer node with described power level grade, until described power level grade changes.
6. the open loop joint Power control device of wireless body area network according to claim 5, it is characterized in that, under described minimum emissive power calculating sub module calculates in the following manner and meets normal running conditions situation, the minimum emissive power level needed for described local node:
Wherein, P
minrepresent described minimum emissive power level, P
trepresent the transmitting power of described peer node, P
trrepresent that described local node can correctly detect and the power threshold of decoded signal, P
rrepresent the received power of described local node, c represents pre-adjustment coefficient.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310239273.7A CN104244390A (en) | 2013-06-17 | 2013-06-17 | Open loop joint power control method and device of wireless body area network |
| PCT/CN2013/082502 WO2013189449A2 (en) | 2013-06-17 | 2013-08-28 | Open-loop joint power control method and device for wireless body area network |
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| CN201310239273.7A CN104244390A (en) | 2013-06-17 | 2013-06-17 | Open loop joint power control method and device of wireless body area network |
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| CN104244390A true CN104244390A (en) | 2014-12-24 |
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| WO (1) | WO2013189449A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110720241A (en) * | 2018-08-07 | 2020-01-21 | Oppo广东移动通信有限公司 | Information transmission method and device, and terminal |
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| CN1344445A (en) * | 1999-03-22 | 2002-04-10 | 交互数字技术公司 | Weighted open-loop power control in time-division multiplexing communication systems |
| US20070258507A1 (en) * | 2006-04-26 | 2007-11-08 | Qualcomm Incorporated | Inter-pulse duty cycling |
| CN101309097A (en) * | 2008-05-23 | 2008-11-19 | 深圳先进技术研究院 | Method and apparatus for implementing power control and method for managing neighbor list |
| CN102511186A (en) * | 2010-02-05 | 2012-06-20 | 华为技术有限公司 | System and method for power control in distributed network |
| CN102894963A (en) * | 2012-10-25 | 2013-01-30 | 南京邮电大学 | Bluetooth-based medical information acquisition system and acquisition method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340838B (en) * | 2011-07-18 | 2013-11-06 | 西安电子科技大学 | Medium access control method for prolonging network lifetime in wireless body area network |
-
2013
- 2013-06-17 CN CN201310239273.7A patent/CN104244390A/en not_active Withdrawn
- 2013-08-28 WO PCT/CN2013/082502 patent/WO2013189449A2/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1344445A (en) * | 1999-03-22 | 2002-04-10 | 交互数字技术公司 | Weighted open-loop power control in time-division multiplexing communication systems |
| US20070258507A1 (en) * | 2006-04-26 | 2007-11-08 | Qualcomm Incorporated | Inter-pulse duty cycling |
| CN101309097A (en) * | 2008-05-23 | 2008-11-19 | 深圳先进技术研究院 | Method and apparatus for implementing power control and method for managing neighbor list |
| CN102511186A (en) * | 2010-02-05 | 2012-06-20 | 华为技术有限公司 | System and method for power control in distributed network |
| CN102894963A (en) * | 2012-10-25 | 2013-01-30 | 南京邮电大学 | Bluetooth-based medical information acquisition system and acquisition method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110720241A (en) * | 2018-08-07 | 2020-01-21 | Oppo广东移动通信有限公司 | Information transmission method and device, and terminal |
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| Publication number | Publication date |
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| WO2013189449A3 (en) | 2014-05-08 |
| WO2013189449A2 (en) | 2013-12-27 |
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