CN102497661A - Heterogeneous network selection method based on transmitting power of terminal - Google Patents
Heterogeneous network selection method based on transmitting power of terminal Download PDFInfo
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- CN102497661A CN102497661A CN2011104252953A CN201110425295A CN102497661A CN 102497661 A CN102497661 A CN 102497661A CN 2011104252953 A CN2011104252953 A CN 2011104252953A CN 201110425295 A CN201110425295 A CN 201110425295A CN 102497661 A CN102497661 A CN 102497661A
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Abstract
The invention relates to a heterogeneous network selection method based on the transmitting power of a terminal. The method comprises the following steps: when a user has a service connection request, detecting the performance parameters of a network covering the user terminal by a user terminal so as to form a network performance parameter list; at the same time, carrying out judgment on service types so as to obtain the threshold requirements of a service on the performance parameters of the network; according to the performance parameters (obtained through detection) of the network and the threshold requirements of the service on the performance parameters of the network, screening networks, comparing the network performance parameters with the threshold requirements of the service on each parameter, and taking a network of which each performance parameter meets parameter threshold requirements as an alternative network; and according to the current situation of each alternative network and the performance parameters of the network, respectively calculating the transmitting power of a required user terminal in each alternative network, and selecting a network with the minimum transmitting power required for completing the service as the final selected network. By using the method disclosed by the invention, the transmitting power of a user terminal can be reduced, and the requirement of green communication can be satisfied under the premise that the quality of a communication service is met.
Description
Technical field
The invention belongs to heterogeneous network integration technology field, particularly a kind of heterogeneous network system of selection based on terminal transmit power.
Background technology
In recent years, wireless communication technology has obtained good development, has increasing cordless communication network standard to be born, and the developing goal of following radio communication is to make up one based on the heterogeneous network all-IP agreement, that merge different type network.The user selects optimum access network to be linked in the core network, the enjoy high quality communication service in a plurality of networks while region covered.Compare with homogeneous network, heterogeneous network is because the diversity that inserts, thereby derived the network selecting problem.In existing heterogeneous network selection algorithm; Mainly carry out network selecting according to parameters such as network environment, systematic function, charges, user preferences; All obtain certain achievement in research; But ignored an important parameter---the transmitting power of user terminal, in existing network selecting algorithm, the transmitting power of user terminal has not been considered fully.
Along with the increase of multimedia service, multiple business types such as video, audio frequency, data on the basis of traditional voice service, have been increased.At present, 3GPP has done concrete definition to the type of service of 3G system, according to the inherent specification requirement of business the 3G business is divided into 4 types: session service, streaming media service, interaction service and background business.Receive the influence of 4 types of business self QoS characteristics, the main flow business of 4 kinds of types of service has different qualities.Require time delay low like the voice communication in the session service, only need lower channel width; And the ftp file transport service in the streaming media service is had relatively high expectations to the error rate, allows a fixed response time, and is high to bandwidth requirement.Therefore, different service has different requirement to network performance parameter, just can reach the telecommunication service quality demand.
In addition, for same professional the connection, the various network situation can cause different user's terminal transmitting power demands, and for example from the distance of base station, distance is far away more, and electromagnetic wave attenuation is fast more, and path loss is big more, and needed transmitting power is just big more; In the big channel of signal to noise ratio, need bigger transmitting power just can make the base station carry out correct reception.On the contrary, the transmitting power of user terminal is crossed the battery consumption that conference increases the terminal, and human body and wireless environment are on every side impacted.In addition; The transmitting power of the user terminal that requires for the different communication technical system is also different; For example in cdma system, the transmitting power of user terminal is big more, and is big more to the interference of wireless environment on every side; Will cause the decline of network capacity, therefore need the transmitting power of strict control user terminal.Therefore; In the network service process of reality; Carry out the communication quality demand of network screening to guarantee that this is professional according to type of service, the transmitting power with user terminal is that parameter is carried out network selecting again, selects suitable user's terminal transmitting power to have great importance.
Summary of the invention
Main purpose of the present invention is to solve when the user is in multiple heterogeneous network and covers simultaneously, how to carry out the problem of network selecting, proposes a kind of heterogeneous network system of selection based on terminal transmit power; This method is selected as far as possible little transmitting power network under the prerequisite that satisfies the user communication quality demand, thereby reduces the energy consumption of user terminal; Prolong terminal service time; Simultaneously, reduce electromagnetic wave, meet the demand of green communications to the radiation of human body and to the interference of wireless environment on every side.
A kind of heterogeneous network system of selection based on terminal transmit power that the present invention proposes is characterized in that, at first in the embedded network test program of user terminal, is used to detect real-time network performance parameter; And, mainly comprise of the threshold value requirement of each business in the tabulation to network performance parameter in of the requirement tabulation of user terminal stored miscellaneous service to network performance parameter; This method mainly may further comprise the steps:
1) when the user has service connection request, user terminal begins to detect the performance parameter of the network that covers this user terminal, forms the network performance parameter tabulation; Simultaneously type of service is judged, obtained of the threshold value requirement of this business network performance parameter;
2) network performance parameter that obtains according to detection and should business the threshold value of network performance parameter be required the screening network; With network performance parameter and this business threshold to each parameter; Each network performance parameter all meets the network of parameter threshold requirement; Promptly belong to the network that meets the communication quality demand, will meet a plurality of networks of network communication quality demand, as a plurality of alternative network;
3) user terminal obtains the transmitting power of required user terminal in each alternative network respectively according to the power control techniques of each alternative network, forms the required terminal transmit power tabulation of alternative network;
4) from the alternative network power list, select to accomplish the minimum network of the required transmitting power of this business and select network, thereby accomplish final network selecting as final.
Above-mentioned steps 1) concrete steps comprise:
1-1) when the user has service connection request, user terminal utilizes the network test program to carry out network measuring, obtains the performance parameter of each overlay network according to detection, writes down the testing result of each performance parameters, forms the network performance parameter tabulation;
1-2) according to this type of service, search the business of storing in the user terminal network performance parameter threshold value is required tabulation, obtain of the threshold value requirement of this business to network performance parameter.
Characteristics of the present invention and beneficial effect
The advantage based on the heterogeneous network system of selection of terminal transmit power that the present invention proposes is: compare with existing heterogeneous network selection algorithm; The present invention has not only considered the influence to network selecting of real-time network condition and different service demand; And more comprehensively considered the transmitting power problem of user terminal, be perfect to the existing network algorithm.Consider that in the present invention the various network selection has different requirement to user's terminal transmitting power; The transmitting power of user terminal is carried out network selecting as the major parameter of network selecting method, make the user under the prerequisite that satisfies the telecommunication service quality demand, be linked into network with as far as possible little transmitting power; Thereby reduced the energy consumption of user terminal; Prolonged the service time of user terminal, reduced user terminal simultaneously, met the demand of green communications the influence of wireless environment on every side.
Description of drawings
Fig. 1 is diverse network and the isomerism network structure sketch map deposited;
Fig. 2 is the network selecting FB(flow block) of the inventive method.
Embodiment
The present invention proposes a kind of network selecting method based on user's terminal transmitting power; When user terminal (UE) is in multiple heterogeneous network and covers simultaneously; As shown in Figure 1; User terminal (UE) is in wireless network: 2G (GSM), 3G (cdma2000, WCDMA, TD-SCDMA), LTE, WLAN, WiMAX etc. and covers simultaneously, and then the user can select optimum heterogeneous network to be connected in the IP kernel heart net as access network, thereby obtains the corresponding communication service.
In order to realize the inventive method, at first need user terminal to possess following function:
A) the embedded network test program of user terminal is used to detect real-time network performance parameter;
B) because type of service is different; For insuring telecommunication service quality; Different business is different to the requirement of network performance parameter; Therefore user terminal need be stored the requirement tabulation of miscellaneous service to network performance parameter, mainly comprises the threshold value requirement of each business to network performance parameter in the tabulation, and is as shown in table 1:
Table 1 different business requires tabulation to the threshold value of network performance parameter
| ? | Minimum-rate | The maximum network time-delay | Maximum packet loss | Maximum jitter |
| Voice communication | 9.6kbps | 100ms | 10％ | 80ms |
| The video stream media program request | 250kbps | 200ms | 15％ | 100ms |
| …… | ? | ? | ? | ? |
Represented mainly in the table 1 that voice communication service and video stream media demand (telecommunication) service for insuring telecommunication service quality, to the threshold value requirement of heterogeneous networks performance parameter, mainly considered the threshold value requirement of speed, network delay, packet loss and shake in the table.
The idiographic flow of the inventive method is as shown in Figure 2, mainly may further comprise the steps:
1) when the user has service connection request, user terminal begins to detect the performance parameter of overlay network, forms the network performance parameter tabulation; Simultaneously type of service is judged, obtained of the threshold value requirement of this business network performance parameter; Concrete steps comprise:
1-1) when the user has business (for example voice communication service) connection request; User terminal utilizes the network test program to carry out network measuring; Obtain the performance parameter of each overlay network according to detection: like speed, time delay, shake, packet loss etc.; Write down the testing result of each performance parameters, form the network performance parameter tabulation, as shown in table 2:
The tabulation of table 2 network performance parameter
| ? | Speed | Network delay | Packet loss | Shake |
| GSM | 13kbps | 30ms | 0.08 | 50ms |
| TD-SCDMA | 200kbps | 55ms | 0.02 | 65ms |
| LTE | 2Mbps | 30ms | 0.05 | 40ms |
[0030]?
| WLAN | 5Mbps | 260ms | 0.15 | 80ms |
| WiMAX | 3Mbps | 150ms | 0.18 | 65ms |
Mainly represented to be in the detected network performance parameter value of user terminal that GSM, TD-SCDMA, LTE, WLAN, five kinds of heterogeneous networks of WiMAX cover simultaneously in the table 2; The network parameter that mainly comprises speed, network delay, packet loss and shake aspect forms the network performance parameter tabulation;
1-2) according to this type of service; Search the business of storing in the user terminal network performance parameter threshold value is required tabulation; Obtain this business and the threshold value of network performance parameter is required (for example for voice communication service, requiring minimum-rate is 9.6kbps, and the maximum network time-delay is 100ms; Maximum packet loss is 10%, and maximum jitter is 80ms).
1) network performance parameter that obtains according to detection and should business the threshold value of network performance parameter be required the screening network: with network performance parameter and this business threshold to each parameter; Each network performance parameter all meets the network of parameter threshold requirement; Promptly belong to the network that meets the communication quality demand; A plurality of networks that will meet the network communication quality demand are as a plurality of alternative network.(for example, for voice communication service, the GSM that filters out, TD-SCDMA, LTE network can both satisfy the corresponding communication QoS requirement, thereby as alternative network)
2) user terminal obtains the transmitting power of required user terminal in each alternative network respectively according to the power control techniques of each alternative network, forms the required terminal transmit power tabulation of alternative network, and is as shown in table 3:
Table 3 alternative network power list
| ? | Required terminal transmit power |
| GSM | 0.2W |
| TD-SCDMA | 0.15W |
| LTE | 0.18W |
Main expression is the alternative network power list to voice communication service filtered out in the table 3.
3) from the alternative network power list, select to accomplish the minimum network of the required transmitting power of this business and select network, thereby accomplish final network selecting as final.(, finally selecting the minimum TD-SCDMA network of required user's terminal transmitting power) for example for above-mentioned voice communication service.
Claims (1)
1. the heterogeneous network system of selection based on terminal transmit power is characterized in that, at first in the embedded network test program of user terminal, is used to detect real-time network performance parameter; And, mainly comprise of the threshold value requirement of each business in the tabulation to network performance parameter in of the requirement tabulation of user terminal stored miscellaneous service to network performance parameter; This method mainly may further comprise the steps:
1) when the user has service connection request, user terminal begins to detect the performance parameter of the network that covers this user terminal, forms the network performance parameter tabulation; Simultaneously type of service is judged, obtained of the threshold value requirement of this business network performance parameter;
2) network performance parameter that obtains according to detection and should business the threshold value of network performance parameter be required the screening network; With network performance parameter and this business threshold to each parameter; Each network performance parameter all meets the network of parameter threshold requirement; Promptly belong to the network that meets the communication quality demand, will meet a plurality of networks of network communication quality demand, as a plurality of alternative network;
3) user terminal obtains the transmitting power of required user terminal in each alternative network respectively according to the power control techniques of each alternative network, forms the required terminal transmit power tabulation of alternative network;
4) from the alternative network power list, select to accomplish the minimum network of the required transmitting power of this business and select network, thereby accomplish final network selecting as final.
Above-mentioned steps 1) concrete steps comprise:
1-1) when the user has service connection request, user terminal utilizes the network test program to carry out network measuring, obtains the performance parameter of each overlay network according to detection, writes down the testing result of each performance parameters, forms the network performance parameter tabulation;
1-2) according to this type of service, search the business of storing in the user terminal network performance parameter threshold value is required tabulation, obtain of the threshold value requirement of this business to network performance parameter.
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Application publication date: 20120613 |