CN106817709B - Method and device for determining switching threshold of different systems - Google Patents

Method and device for determining switching threshold of different systems Download PDF

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CN106817709B
CN106817709B CN201510850210.4A CN201510850210A CN106817709B CN 106817709 B CN106817709 B CN 106817709B CN 201510850210 A CN201510850210 A CN 201510850210A CN 106817709 B CN106817709 B CN 106817709B
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rate
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rsrp
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CN106817709A (en
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张磊
任鹏飞
李�一
张恒
宋春涛
陆钧
杨雨苍
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface

Abstract

The invention discloses a method and a device for determining a switching threshold of a different system, which relate to the technical field of information and can improve the accuracy of determining the switching threshold of the different system. The method comprises the following steps: the method comprises the steps of firstly determining an expected rate of a 4G network before switching, then fitting a relation between Reference Signal Received Power (RSRP) and a downlink Packet Data Convergence Protocol (PDCP) rate, and finally determining a first inter-system switching threshold according to the expected rate of the 4G network before switching and the fitting relation between the RSRP and the downlink PDCP rate, so that the 4G network is switched to a 3G network or a 2G network, wherein the switched network is a second generation mobile communication technology 2G or a third generation mobile communication technology 3G network. The method and the device are suitable for determining the switching threshold of the 4G network and the 2G or 3G network.

Description

Method and device for determining switching threshold of different systems
Technical Field
The present invention relates to the field of information technologies, and in particular, to a method and an apparatus for determining a handover threshold of a different system.
Background
With the development of information technology, fourth Generation mobile communication technology (the 4th Generation mobile communication, abbreviated as 4G) networks have been developed, but due to the coverage quality problem between 4G networks and third Generation mobile communication technology (3G) networks or second Generation mobile communication technology specification (2G networks), the terminal will switch between 4G networks and 2G or 3G networks to ensure good user experience, so that it is necessary to reasonably set a threshold for switching between 4G networks and 2G or 3G networks. At present, a set of reasonable method for determining the switching threshold of the different systems is lacked, and the switching threshold of the different systems is determined only through experience values of various manufacturers.
However, when the inter-system handover threshold unified in the whole network is determined only through an empirical value, since the actual coverage conditions of the 4G network and the 2G or 3G network in each area are not considered, the user may be handed over to the 3G cell or the 2G cell too early or too late in the cell with poor 4G coverage, it is difficult to effectively guarantee the user perception and the network performance, and thus the accuracy of determining the inter-system handover threshold is low.
Disclosure of Invention
The invention provides a method and a device for determining a switching threshold of a different system, which can improve the accuracy of determining the switching threshold of the different system.
The technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a method for determining a handover threshold of a heterogeneous system, including:
determining an expected rate of a fourth generation mobile communication technology 4G network before switching, wherein the expected rate of the 4G network before switching is less than or equal to an average rate of network data services after switching, and the network after switching is a second generation mobile phone communication technology 2G or a third generation mobile communication technology 3G network;
fitting the relation between Reference Signal Received Power (RSRP) and a downlink Packet Data Convergence Protocol (PDCP) rate;
and determining a first inter-system handover threshold according to the expected rate of the 4G network before handover and the fitting relation between the RSRP and the downlink PDCP rate, so that the 4G network is handed over to the 3G network or the 2G network.
In a second aspect, the present invention provides an apparatus for determining a handover threshold of a different system, including:
the determining unit is used for determining the expected rate of a fourth generation mobile communication technology 4G network before switching, wherein the expected rate of the 4G network before switching is less than or equal to the average rate of network data services after switching, and the network after switching is a second generation mobile phone communication technology 2G or a third generation mobile communication technology 3G network;
the fitting unit is used for fitting the relation between the Reference Signal Received Power (RSRP) and the rate of the downlink Packet Data Convergence Protocol (PDCP);
the determining unit is further configured to determine a first inter-system handover threshold according to the expected rate of the 4G network before handover and a fitting relationship between RSRP and downlink PDCP rate, so as to handover from the 4G network to the 3G network or the 2G network.
The method and the device for determining the inter-system switching threshold firstly determine the expected rate of a 4G network before switching, then fit the relation between the Reference Signal Received Power (RSRP) and the downlink Packet Data Convergence Protocol (PDCP) rate, and finally determine the first inter-system switching threshold according to the expected rate of the 4G network before switching and the fit relation between the RSRP and the downlink PDCP rate, so that the 4G network is switched to a 3G network or a 2G network. The switched network is a second generation mobile phone communication technology 2G or a third generation mobile communication technology 3G network. Compared with the method for determining the different-system switching threshold only by experience values, the method for determining the different-system switching threshold determines the first different-system switching threshold by the fitting relation between the actually measured RSRP and the downlink PDCP rate of the existing 4G network and the expected rate of the 4G network before switching determined by the existing 2G or 3G network, and can improve the accuracy of determining the different-system switching threshold because all parameters used for determining the different-system switching threshold are obtained from the existing network.
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In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings used in the description of the present invention or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a flowchart of a method for determining a handover threshold of a different system according to an embodiment of the present invention;
fig. 2 is a flowchart of another method for determining a handover threshold of a different system according to an embodiment of the present invention;
fig. 3 is a flowchart of another method for determining a handover threshold of a different system according to an embodiment of the present invention;
fig. 4 is a flowchart of another method for determining a handover threshold of a different system according to an embodiment of the present invention;
fig. 5 is a flowchart of another method for determining a handover threshold of a different system according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an apparatus for determining a handover threshold of a different system according to an embodiment of the present invention;
fig. 7 is a schematic diagram of another apparatus for determining a handover threshold of a different system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a method for determining a handover threshold of a different system, which can improve accuracy of determining the handover threshold of the different system, as shown in fig. 1, the method includes:
101. the parameter determination device determines a desired rate of the fourth generation mobile communication technology 4G network before handover.
The expected rate of the 4G network before switching is less than or equal to the average rate of the network data service after switching, and the network after switching is a second generation mobile phone communication technology 2G or a third generation mobile communication technology 3G network.
For the embodiment of the present invention, the set inter-system switching threshold must ensure that better service performance can be obtained after the terminal is switched from the 4G network to the 2G or 3G network, that is, it needs to ensure that the obtained data service rate is greater than or equal to the data service rate of the terminal when the 4G network is switched from the 4G network to the 2G or 3G network, that is, the data service rate of the 4G network before switching is less than or equal to the average data service rate of the 2G or 3G network users. In the embodiment of the invention, the user perception situation is considered, and the data service rate of the 4G network before switching is generally ensured to be equal to the average data service rate of the 2G or 3G network user.
102. The parameter determination device fits the relation between the Reference Signal Received Power (RSRP) and the rate of the downlink Packet Data Convergence Protocol (PDCP).
For the embodiment of the invention, the parameter determination equipment performs fitting through all sampling points of the RSRP and the downlink PDCP rate in the drive test data to obtain the corresponding relation between the RSRP and the downlink PDCP rate.
103. The parameter determining device determines a first inter-system handover threshold according to the expected rate of the 4G network before handover and the fitting relation between the RSRP and the downlink PDCP rate, so that the 4G network is handed over to the 3G network or the 2G network.
For the embodiment of the present invention, in step 102, the RSRP and the downlink PDCP rate are fitted to obtain the corresponding relationship between the RSRP and the downlink PDCP rate, and the corresponding RSRP, that is, the first inter-system handover threshold, is determined according to the expected rate of the 4G network before handover.
The method for determining the inter-system handover threshold provided by the embodiment of the invention comprises the steps of firstly determining the expected rate of a 4G network before handover, then fitting the relation between the Reference Signal Received Power (RSRP) and the downlink Packet Data Convergence Protocol (PDCP) rate, and finally determining the first inter-system handover threshold according to the expected rate of the 4G network before handover and the fitting relation between the RSRP and the downlink PDCP rate, so that the 4G network is switched to a 3G network or a 2G network. The switched network is a second generation mobile phone communication technology 2G or a third generation mobile communication technology 3G network. Compared with the method for determining the inter-system switching threshold only by experience values, the embodiment of the invention determines the first inter-system switching threshold by the fitting relation between the actually measured RSRP and the downlink PDCP rate of the existing 4G network and the expected rate of the 4G network before switching determined by the existing 2G or 3G network.
In another possible implementation manner of the embodiment of the present invention, on the basis as shown in fig. 1, step 101 and the parameter determining device determine the desired rate of the 4G network of the fourth generation mobile communication technology before the handover, and step 201 and step 202 shown in fig. 2 are further included before the handover.
201. The parameter determination device acquires drive test data of a 2G or 3G network.
Wherein, the drive test data of the 2G or 3G network comprises: data traffic rate per user in 2G or 3G networks.
202. And the parameter determining equipment determines the average data service rate of the users in the 2G or 3G network according to the data service rate of each user in the 2G or 3G network.
For the embodiment of the invention, the expected rate of the 4G network before switching is determined by determining the average rate of the data service of the 2G or 3G network user according to the drive test data, namely the expected rate of the 4G network before switching is equal to the average rate of the data service of the user in the 2G or 3G network.
For example, the average rate of data traffic for a user in a 2G or 3G network determined from drive test data is 6500kbps, and thus the desired rate for the 4G network prior to handover is 6500 kbps.
Another possible implementation manner of the embodiment of the present invention is that, on the basis shown in fig. 2, step 102 and the parameter determination device fit the relationship between the reference signal received power RSRP and the downlink packet data convergence protocol PDCP rate, and before the step 301 shown in fig. 3, step 102 and the parameter determination device fit the relationship between the reference signal received power RSRP and the downlink packet data convergence protocol PDCP rate, which may specifically include step 302 shown in fig. 3.
301. The parameter determination device acquires drive test data of the 4G network in a specific area.
Wherein the drive test data includes: RSRP and downlink PDCP rate.
For the embodiment of the invention, a specific area is selected first, and the drive test data of the 4G network of the specific area is obtained from the drive test data.
The drive test data is shown in table one.
Watch 1
Index value Device Measuring time Longitude (G) Latitude RSRP Downlink PDCP rate
1 UE1 13:21.0 113.3747 23.06303 -81 29048
2 UE1 13:22.0 113.3747 23.06304 -80.4 25368
3 UE1 13:23.0 113.3747 23.06304 -80.5 24768
4 UE1 13:24.0 113.3747 23.06304 -81.667 22320
5 UE1 13:25.0 113.3747 23.06304 -80 27624
6 UE1 13:26.0 113.3747 23.06304 -79.333 29144
7 UE1 13:27.0 113.3747 23.06304 -78.5 27752
8 UE1 13:28.0 113.3747 23.06305 -78.833 24888
9 UE1 13:29.0 113.3747 23.06305 -83 28000
10 UE1 13:30.0 113.3747 23.06305 -78.833 33272
302. And the parameter determining equipment fits the relation between the RSRP and the downlink PDCP rate to obtain a linear relation Y-A X X + B.
Wherein X is RSRP, Y is downlink PDCP rate, and A and B are coefficients.
For the embodiment of the present invention, a linear relationship between the RSRP and the downlink PDCP rate is obtained by fitting the RSRP and the downlink PDCP rate in the route measurement data, for example, the linear relationship may be: Y523.62X +68051, wherein X is RSRP in dBm, and Y is downlink PDCP rate in kbps, wherein a 523.62 and B68051.
For the embodiment of the invention, the parameter determination device can determine the fitting relation between the RSRP and the downlink PDCP rate through the drive test data of the 4G network, so that the inter-system switching threshold between the 4G network and the 2G or 3G network can be determined, and the accuracy of determining the inter-system switching threshold can be improved because the inter-system switching threshold is obtained through a large amount of drive test data.
In another possible implementation manner of the embodiment of the present invention, on the basis as shown in fig. 3, step 103 and the parameter determining device determine the first inter-system handover threshold according to the expected rate of the 4G network before handover and the fitting relationship between the RSRP and the downlink PDCP rate, so as to handover from the 4G network to the 3G network or the 2G network, which may specifically include step 401 shown in fig. 4.
401. The parameter determination device determines a first inter-system handover threshold according to the expected rate of the 4G network before handover and formula 1, so as to switch from the 4G network to the 3G network or the 2G network.
Wherein, the formula 1 is
Figure BDA0000860671080000061
X is the first inter-system handover threshold, and Y is the expected rate of the 4G network before handover.
For the embodiment of the present invention, the parameter determining device determines, according to the fitting relationship between the RSRP and the downlink PDCP rate and the expected rate of the pre-handover 4G network, the RSRP corresponding to the expected rate of the pre-handover 4G network, where the RSRP is a first inter-system handover threshold.
For example, when a is 523.62, B is 68051, the desired rate of the 4G network before the handover is 6500kbps, and the first inter-system handover threshold is 6500kbps
Figure BDA0000860671080000062
In another possible implementation manner of the embodiment of the present invention, on the basis as shown in fig. 1, step 103 and the parameter determining device determine the first inter-system handover threshold according to the expected rate of the 4G network before handover and the fitting relationship between the RSRP and the downlink PDCP rate, so as to switch from the 4G network to the 3G network or the 2G network, and then may further include step 501 and step 504 as shown in fig. 5.
501. And the parameter determining equipment adjusts the first inter-system switching threshold according to the time delay condition of the inter-system switching process to obtain a second inter-system switching threshold.
And the second inter-system switching threshold is the adjusted inter-system switching threshold.
For the embodiment of the present invention, since the inter-system handover process needs to consume a certain time, the RSRP value corresponding to the actual 4G network handover point is lower than the handover threshold value, and therefore the parameter determination device needs to adjust the first inter-system handover threshold to obtain the second inter-system handover threshold. In the embodiment of the invention, the parameter determination equipment uses the formula RSRP2＝RSRP1+ K, wherein, RSRP1Is the first inter-system handover threshold, RSRP2And K is greater than or equal to 0 for the second inter-system handover threshold. Wherein, in general, K may be greater than or equal to 1dB and less than or equal to 3 dB. The present invention is not limited to the embodiments.
For example, if RSRP1 is-117.5 dBm and K is 1.5dB, RSRP will be the same as RSRP2＝RSRP1+K＝-117.5+1.5＝-116dBm。
For the embodiment of the invention, the parameter determining equipment can adjust the switching threshold of the different system by considering the time delay caused by the switching process of the different system, thereby reducing the error caused by the switching time delay and further improving the accuracy of determining the switching threshold of the different system.
502. The parameter determining device obtains MR data corresponding to each cell.
Wherein the MR data comprises: and sampling points corresponding to different RSRP values.
For the embodiment of the present invention, because the coverage level and the quality of each 4G cell and the 2G/3G cells around the 4G cell are different, the parameter determining device needs to adjust the second inter-system handover threshold according to the MR data corresponding to each 4G cell, so as to determine the inter-system handover threshold corresponding to each cell.
503. And the parameter determining equipment determines the ratio of the number of sampling points of which the RSRP in the MR data respectively corresponding to each 4G cell is smaller than the second system switching threshold to the total number of sampling points of the MR data.
For the embodiment of the present invention, the parameter determining unit needs to determine that the RSRP value in the MR data corresponding to each cell in the selected region is less than the sampling point number of the second inter-system handover threshold and all the sampling point numbers of the MR data corresponding to each cell, and according to a formula P, the first sampling point number of each cell/the total sampling point number of each cell, where the first sampling point number is the sampling point number of the RSRP value in the MR data corresponding to each cell less than the second inter-system handover threshold.
504. And the parameter determining equipment adjusts the second inter-system switching threshold according to the ratio of the number of sampling points of the MR data, corresponding to each cell, of the RSRP smaller than the second inter-system switching threshold to the total number of sampling points of the MR data, so as to obtain the inter-system switching threshold corresponding to each cell.
For the embodiment of the invention, two thresholds are set in the parameter determination device, namely a first threshold T1 and a second threshold T2, wherein T1 is greater than or equal to 0 and T2 is less than or equal to 1.
For the embodiment of the present invention, if P<T1, if the coverage quality of the 4G network is good, the parameter determining device needs to reduce the inter-system handover threshold, that is, RSRP3＝RSRP2+ Δ RSRP; if the T1 is not less than P is not less than T2, the coverage quality of the 4G network is represented to be general, and the parameter determination equipment does not need to adjust the inter-system handover threshold, namely RSRP3＝RSRP2(ii) a If P>T2, if the coverage of the 4G network is poor, the parameter determining device needs to raise the inter-system handover threshold, i.e. RSRP3＝RSRP2-ΔRSRP。
For example, T1-5%, T2-15%, if P<5%, the parameter determining equipment adjusts the inter-system switching threshold to RSRP3＝RSRP2+ Δ RSRP-116 + (-2) -118 dBm; if P is more than or equal to 5% and less than or equal to 15%, the parameter determination equipment adjusts the inter-system switching threshold to RSRP3＝RSRP2+ Δ RSRP-116 + 0-116 dBm, if P>15%, the parameter determining equipment adjusts the inter-system switching threshold to RSRP3＝RSRP2+ΔRSRP＝-116-(-2)＝-114dBm。
For the embodiment of the present invention, the parameter determining unit can adjust the inter-system switching threshold based on the MR data corresponding to each cell by acquiring the MR data of each cell, and acquire the inter-system switching threshold corresponding to each cell, so that the inter-system switching threshold can be adjusted according to the actual network coverage condition of each cell, so that the inter-system switching threshold conforming to each cell can be obtained, and the accuracy of determining the inter-system switching threshold can be further improved.
Furthermore, another method for determining a different system handover threshold is provided in the embodiments of the present invention, where the parameter determining device may determine a fitting relationship between RSRP and a downlink PDCP rate through the drive test data of the 4G network, so as to determine a different system handover threshold between the 4G network and the 2G or 3G network, and since the different system handover threshold is obtained through a large amount of drive test data, the accuracy of determining the different system handover threshold may be improved; the parameter determining equipment can adjust the switching threshold of the different system by considering the time delay caused by the switching process of the different system, thereby reducing the error caused by the switching time delay of the different system and further improving the accuracy of determining the switching threshold of the different system; the parameter determining unit can adjust the inter-system switching threshold by acquiring the MR data on each 4G cell, and acquiring the inter-system switching threshold corresponding to each cell, so that the inter-system switching threshold according with the actual network coverage condition of each cell can be adjusted, the inter-system switching threshold according with the coverage level of each cell can be obtained, and the accuracy of determining the inter-system switching threshold can be further improved.
As an implementation of the methods shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, an embodiment of the present invention further provides an apparatus for determining a handover threshold of a different system, which can improve accuracy of determining the handover threshold of the different system. As shown in fig. 6, the apparatus includes: a determination unit 61 and a fitting unit 62.
A determining unit 61, configured to determine a desired rate of the 4G network of the fourth generation mobile communication technology before handover.
The expected rate of the 4G network before switching is less than or equal to the average rate of the network data service after switching, and the network after switching is a second generation mobile phone communication technology 2G or a third generation mobile communication technology 3G network.
A fitting unit 62, configured to fit a relationship between the reference signal received power RSRP and the downlink packet data convergence protocol PDCP rate.
The determining unit 61 is further configured to determine a first inter-system handover threshold according to the expected rate of the 4G network before handover and a fitting relationship between RSRP and a downlink PDCP rate, so as to enable handover from the 4G network to the 3G network or the 2G network.
Further, as shown in fig. 7, the apparatus further includes: an acquisition unit 71.
An obtaining unit 71, configured to obtain drive test data of a 2G or 3G network.
Wherein, the drive test data of the 2G or 3G network comprises: data traffic rate for each user in a 2G or 3G network;
the determining unit 61 is further configured to determine an average data traffic rate of the users in the 2G or 3G network according to the data traffic rate of each user in the 2G or 3G network.
The obtaining unit 71 is further configured to obtain drive test data of the 4G network in the specific area.
Wherein the drive test data includes: RSRP and downlink PDCP rate;
the fitting unit 62 is specifically configured to fit a relationship between the RSRP and the downlink PDCP rate, so as to obtain a linear relationship Y ═ a × X + B.
Wherein X is RSRP, Y is downlink PDCP rate, and A and B are coefficients.
A determining unit 61, specifically configured to determine a desired rate and a formula of the pre-handover 4G network
Figure BDA0000860671080000091
A first inter-system handover threshold is determined to cause a handover from a 4G network to a 3G network or a 2G network.
Wherein, X is the first inter-system handover threshold, and Y is the expected rate of the 4G network before handover.
Further, as shown in fig. 7, the apparatus further includes: an adjustment unit 72.
The adjusting unit 72 is configured to adjust the first inter-system handover threshold according to a time delay condition of the inter-system handover process, so as to obtain a second inter-system handover threshold.
And the second inter-system switching threshold is the adjusted inter-system switching threshold.
The acquiring unit 71 is further configured to acquire MR data corresponding to each 4G cell.
Wherein the MR data comprises: sampling points corresponding to different RSRP values;
the determining unit 61 is further configured to determine a ratio of the number of sampling points, of which RSRP is smaller than the second inter-system handover threshold, in the MR data corresponding to each 4G cell to the total number of sampling points of the MR data.
The adjusting unit 72 is further configured to adjust the second inter-system handover threshold according to a ratio of the number of sampling points, in the MR data corresponding to each 4G cell, of which RSRP is smaller than the second inter-system handover threshold to the total number of sampling points of the MR data, so as to obtain the inter-system handover threshold corresponding to each cell.
The device for determining the inter-system handover threshold provided by the embodiment of the invention first determines the expected rate of the 4G network before handover, then fits the relationship between the Reference Signal Received Power (RSRP) and the downlink Packet Data Convergence Protocol (PDCP) rate, and finally determines the first inter-system handover threshold according to the expected rate of the 4G network before handover and the fit relationship between the RSRP and the downlink PDCP rate, so that the 4G network is handed over to the 3G network or the 2G network. The switched network is a second generation mobile phone communication technology 2G or a third generation mobile communication technology 3G network. Compared with the method for determining the inter-system switching threshold only by experience values, the embodiment of the invention determines the first inter-system switching threshold by the fitting relation between the actually measured RSRP and the downlink PDCP rate of the existing 4G network and the expected rate of the 4G network before switching determined by the existing 2G or 3G network.
Furthermore, another apparatus for determining a inter-system handover threshold is provided in the embodiments of the present invention, where the parameter determining device may determine a fitting relationship between RSRP and a downlink PDCP rate through the drive test data of the 4G network, so as to determine the inter-system handover threshold between the 4G network and the 2G or 3G network, and since the inter-system handover threshold is obtained through a large amount of drive test data, the accuracy of determining the inter-system handover threshold may be improved; the parameter determining equipment can adjust the switching threshold of the different system by considering the time delay caused by the switching process of the different system, thereby reducing the error caused by the switching time delay of the different system and further improving the accuracy of determining the switching threshold of the different system; the parameter determining unit can adjust the inter-system switching threshold by acquiring the MR data on each 4G cell, and acquiring the inter-system switching threshold corresponding to each cell, so that the inter-system switching threshold according with the actual network coverage condition of each cell can be adjusted, the inter-system switching threshold according with the coverage level of each cell can be obtained, and the accuracy of determining the inter-system switching threshold can be further improved.
It should be noted that, in the apparatus for determining a handover threshold of an inter-system provided in the embodiment of the present invention, other corresponding descriptions corresponding to each unit may refer to corresponding descriptions in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, and are not described herein again.
The device for determining the inter-system handover threshold according to the embodiment of the present invention may implement the method embodiment provided above, and for specific function implementation, reference is made to the description of the method embodiment, which is not described herein again. The method and the device for determining the inter-system handover threshold provided by the embodiment of the invention can be applied to determining the handover thresholds of a 4G network and a 2G or 3G network, but are not limited thereto.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A method for determining a handover threshold for a heterogeneous system, comprising:
determining an expected rate of a fourth generation mobile communication technology 4G network before switching, wherein the expected rate of the 4G network before switching is less than or equal to an average rate of network data services after switching, and the network after switching is a second generation mobile phone communication technology 2G or a third generation mobile communication technology 3G network;
fitting the relation between Reference Signal Received Power (RSRP) and a downlink Packet Data Convergence Protocol (PDCP) rate;
and determining a first inter-system handover threshold according to the expected rate of the 4G network before handover and the fitting relation between the RSRP and the downlink PDCP rate, so that the 4G network is handed over to the 3G network or the 2G network.
2. The method of determining inter-system handover threshold of claim 1, wherein the step of determining the desired rate of the fourth generation 4G network before handover further comprises:
acquiring drive test data of a 2G or 3G network, wherein the drive test data of the 2G or 3G network comprises: the data traffic rate of each user in the 2G or 3G network;
and determining the average data service rate of the users in the 2G or 3G network according to the data service rate of each user in the 2G or 3G network.
3. The method of determining inter-system handover threshold according to claim 2, wherein the step of fitting the relation between the reference signal received power RSRP and the downlink packet data convergence protocol PDCP rate is preceded by the step of:
acquiring drive test data of a 4G network of a specific area, wherein the drive test data comprises: RSRP and downlink PDCP rate;
the step of fitting the relation between the reference signal received power RSRP and the downlink packet data convergence protocol PDCP rate specifically includes:
and fitting the relation between the RSRP and the downlink PDCP rate to obtain a linear relation Y (A X X + B), wherein X is the RSRP, Y is the downlink PDCP rate, and A and B are coefficients.
4. The method according to claim 3, wherein the step of determining a first inter-system handover threshold according to the expected rate of the 4G network before handover and the fitting relationship between RSRP and downlink PDCP rate so as to handover from the 4G network to the 3G network or the 2G network specifically comprises:
according to the expected rate of the 4G network before the switching and a formula
Figure FDA0002155813260000021
Determining the first inter-system handover threshold so as to handover from the 4G network to the 3G network or the 2G network, wherein X is the first inter-system handover threshold, and Y is the expected rate of the 4G network before handover.
5. The method of determining the inter-system handover threshold according to claim 1, wherein the step of determining the first inter-system handover threshold according to the expected rate of the 4G network before handover and the fitted relationship between RSRP and downlink PDCP rate, so that the handover from the 4G network to the 3G network or the 2G network further comprises:
adjusting the first inter-system switching threshold according to the time delay condition of the inter-system switching process to obtain a second inter-system switching threshold, wherein the second inter-system switching threshold is the adjusted inter-system switching threshold;
acquiring MR data corresponding to each 4G cell respectively, wherein the MR data comprises: sampling points corresponding to different RSRP values;
determining the ratio of the number of sampling points of which the RSRP in the MR data respectively corresponding to each 4G cell is smaller than the second inter-system handover threshold to the total number of sampling points of the MR data;
and adjusting the second inter-system switching threshold according to the ratio of the number of sampling points of the MR data, corresponding to each 4G cell respectively, of the RSRP smaller than the second inter-system switching threshold to the total number of sampling points of the MR data, so as to obtain the inter-system switching threshold corresponding to each cell respectively.
6. An apparatus for determining a handover threshold for a heterogeneous system, comprising:
the determining unit is used for determining the expected rate of a fourth generation mobile communication technology 4G network before switching, wherein the expected rate of the 4G network before switching is less than or equal to the average rate of network data services after switching, and the network after switching is a second generation mobile phone communication technology 2G or a third generation mobile communication technology 3G network;
the fitting unit is used for fitting the relation between the Reference Signal Received Power (RSRP) and the rate of the downlink Packet Data Convergence Protocol (PDCP);
the determining unit is further configured to determine a first inter-system handover threshold according to the expected rate of the 4G network before handover and a fitting relationship between RSRP and downlink PDCP rate, so as to handover from the 4G network to the 3G network or the 2G network.
7. The apparatus for determining inter-system handover threshold of claim 6, further comprising: an acquisition unit;
the acquiring unit is configured to acquire drive test data of a 2G or 3G network, where the drive test data of the 2G or 3G network includes: the data traffic rate of each user in the 2G or 3G network;
the determining unit is further configured to determine an average data traffic rate of the users in the 2G or 3G network according to the data traffic rate of each user in the 2G or 3G network.
8. The apparatus for determining inter-system handover threshold of claim 7,
the acquiring unit is further configured to acquire drive test data of a 4G network in a specific area, where the drive test data includes: RSRP and downlink PDCP rate;
the fitting unit is specifically configured to fit a relationship between the RSRP and the downlink PDCP rate to obtain a linear relationship Y ═ a × X + B, where X is the RSRP, Y is the downlink PDCP rate, and a and B are coefficients.
9. The apparatus for determining inter-system handover threshold of claim 6,
the determining unit is specifically configured to determine the expected rate of the pre-handover 4G network according to a formula
Figure FDA0002155813260000031
Determining the first inter-system handover threshold so as to handover from the 4G network to the 3G network or the 2G network, wherein X is the first inter-system handover threshold, and Y is the expected rate of the 4G network before handover.
10. The apparatus for determining inter-system handover threshold of claim 6, further comprising: an adjustment unit;
the adjusting unit is configured to adjust the first inter-system handover threshold according to a time delay condition of an inter-system handover process to obtain a second inter-system handover threshold, where the second inter-system handover threshold is an adjusted inter-system handover threshold;
an obtaining unit, further configured to obtain MR data corresponding to each 4G cell, where the MR data includes: sampling points corresponding to different RSRP values;
the determining unit is further configured to determine a ratio of a number of sampling points, which is smaller than the second inter-system handover threshold, of RSRP in the MR data corresponding to each 4G cell to a total number of sampling points of the MR data;
the adjusting unit is further configured to adjust the second inter-system handover threshold according to a ratio of a number of sampling points, which is smaller than the second inter-system handover threshold, of RSRP in the MR data corresponding to each 4G cell, to a total number of sampling points of the MR data, so as to obtain the inter-system handover threshold corresponding to each cell.
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