CN105072641A - Carrier aggregation cell discovery method and apparatus - Google Patents
Carrier aggregation cell discovery method and apparatus Download PDFInfo
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- CN105072641A CN105072641A CN201510423111.8A CN201510423111A CN105072641A CN 105072641 A CN105072641 A CN 105072641A CN 201510423111 A CN201510423111 A CN 201510423111A CN 105072641 A CN105072641 A CN 105072641A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention provides a carrier aggregation cell discovery method and apparatus. The method comprises: according to recorded road test data, in a time quantum T2-T1 of accessing a road test terminal to a cell P, if the RRC layer connection reconfiguration signaling issued by a base station and carrying the PCI and frequency point of an auxiliary cell is determined to be not received, searching the road test data obtained by a sweepr during the time quantum T1-t and T2+t for the road test data when the distance between the sweeper and the road test terminal is smaller than a preset distance; and if discovering a frequency point in the searched road test data not equal to the frequency point of the cell P, and a cell S, the frequency point interval of which with the cell P is times of 300kHz, determining the probability in which the cell P and the cell S are carrier aggregation cells to be Q1, wherein Q1 is greater than 0, and smaller than 100%. The scheme can discover a carrier aggregation cell as much as possible in a hierarchical way.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of carrier aggregation subdistrict discover method and device.
Background technology
The development of mobile Internet makes mobile communication data business amount promote at double, and the peak rate of traditional second generation (2G) and the third generation (3G) cellular network cannot meet the demand of diversified business.
So on December 4th, 2013, the Ministry of Industry and Information Technology issued the operation licence plate of time division duplex LTE (TD-LTE) to China Mobile, CHINAUNICOM and China Telecom simultaneously.On February 27th, 2105, the Ministry of Industry and Information Technology has issued again the operation licence plate of Frequency Division Duplexing (FDD) (LTEFDD) to CHINAUNICOM and China Telecom.As forth generation (4G) mobile communication technology, TD-LTE/LTEFDD down peak magnitude is respectively up to 110Mbps, 150Mbps.
On this basis, third generation partner program (3GPP) has done further enhancing to LTE technology, wherein one of most important technology is exactly carrier aggregation, namely by adopting multiple carrier wave section to be 1 user's service simultaneously, under the prerequisite that need not promote spectrum efficiency, promote terminal peak speed at double.International and domestic mainstream carrier very payes attention to carrier aggregation technology, and the leading operator of part has completed commercial deployment.
Drive test is the important means of carrier network planning, optimization.By adopting sweep generator or drive test terminal to coordinate drive test software, record the information such as the frequency of network small area, Physical Cell Identifier (PCI), Reference Signal Received Power (RSRP), longitude and latitude and Signal Interference and Noise Ratio (SINR).Then background analysis is carried out to it, provide the network coverage, Capacity Assessment result and Optimizing Suggestions.
But due to the restriction of sweep generator equipment, the down-going synchronous with multiple base station can only be completed, receive the data of the broadcast channel that base station issues, and measurement assessment is carried out to reference signal, can not access network.Therefore, sweep generator cannot trigger data business, is in idle state all the time, can not knowing in network which cell configuration carrier aggregation function, can only treat there being the community of carrier aggregation to be considered as individual cell.
Be different from sweep generator, drive test terminal can complete access network, can be in radio resource control and connect (RRC_Connected) state, and trigger data descending with upload.By monitoring rrc layer Signalling exchange, know the carrier aggregation subdistrict that network side configures.But drive test terminal can only be monitored and be recorded the information such as the frequency of Serving cell, PCI, when not carrying out mobility flow process, cannot obtain the information of adjacent area.
Summary of the invention
In view of this, the application provides a kind of carrier aggregation subdistrict discover method and device, can classify and farthest find carrier aggregation subdistrict.
For solving the problems of the technologies described above, the technical scheme of the application is achieved in that
A kind of carrier aggregation subdistrict discover method, the method comprises:
Record drive test terminal and sweep generator carry out drive test data during drive test in LTE-A outfield, and described drive test data comprises: the Physical Cell Identifier PCI of community, frequency; Wherein, described drive test terminal is when accessing community and carrying out drive test, and trigger network configures carrier aggregation function, and record starts access the time T1 of this community and leave the time T2 of this community;
According to the drive test data of record, in the time period T2-T1 of described drive test terminal access community P, do not receive the PCI carrying auxiliary community that base station issues if determine and be connected reprovision signaling with the radio resource control rrc layer of frequency, in the drive test data then obtained in time period T1-t to T2+t at sweep generator, find drive test data when sweep generator and drive test terminal distance are less than predeterminable range value; Wherein, t is according to the speed configuration of drive test terminal movement;
If there is the frequency that frequency is not equal to community P in the drive test data found, the community S of the integral multiple of 300kHz is spaced apart with the frequency of described community P, and the frequency of the frequency of community P and community S is carrier aggregation frequency range in third generation partner program 3GPP specification combines, then determine that community P and community S be the probability of carrier aggregation subdistrict is Q1, wherein, Q1 is greater than 0, and is less than 100%.
A kind of carrier aggregation subdistrict finds device, and this device comprises: record cell and determining unit;
Described record cell, for recording drive test data when drive test terminal and sweep generator carry out drive test in LTE-A outfield, described drive test data comprises: the Physical Cell Identifier PCI of community, frequency; Wherein, described drive test terminal is when accessing community and carrying out drive test, and trigger network configures carrier aggregation function, and record starts access the time T1 of this community and leave the time T2 of this community;
Described determining unit, for according to the drive test data of described recording unit records in the time period T2-T1 of described drive test terminal access community P, do not receive the PCI carrying auxiliary community that base station issues if determine and be connected reprovision signaling with the radio resource control rrc layer of frequency, in the drive test data then obtained in time period T1-t to T2+t at sweep generator, find drive test data when sweep generator and drive test terminal distance are less than predeterminable range value; Wherein, t is according to the speed configuration of drive test terminal movement; If there is the frequency that frequency is not equal to community P in the drive test data found, the community S of the integral multiple of 300kHz is spaced apart with the frequency of described community P, and the frequency of the frequency of community P and community S is carrier aggregation frequency range in third generation partner program 3GPP specification combines, then determine that community P and community S be the probability of carrier aggregation subdistrict is Q1, wherein, Q1 is greater than 0, and is less than 100%.
From technical scheme above, drive test data by obtaining when outfield drive test drive test terminal and sweep generator in the application, merge, obtain the information being configured with the community of carrier aggregation function in network, realize the drive test process of LTE-A carrier aggregation function.Can be classified by the program and farthest find carrier aggregation subdistrict.
Accompanying drawing explanation
Fig. 1 is driver test system schematic diagram in the embodiment of the present application;
Fig. 2 is that in the embodiment of the present application one, carrier aggregation subdistrict finds schematic flow sheet;
Fig. 3 is that in the embodiment of the present application two, carrier aggregation subdistrict finds schematic flow sheet;
Fig. 4 is the apparatus structure schematic diagram being applied to above-mentioned technology in the embodiment of the present application.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, to develop simultaneously embodiment below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail.
Propose a kind of carrier aggregation subdistrict discover method in the embodiment of the present application, the method can support that Long Term Evolution strengthens the outfield drive test of (LTE-A) carrier aggregation function, first needs to obtain the drive test data when carrying out outfield drive test, specific as follows:
Drive test is carried out respectively by sweep generator and drive test terminal in the drive test process of outfield.In the drive test process of outfield, the position of sweep generator and drive test terminal is close as much as possible, to reduce drive test error.
Physical Cell Identifier (PCI) and the frequency of multiple community, its position is obtained by sweep generator, and global positioning system (GPS) information when carrying out drive test;
Drive test terminal obtains frequency, the PCI of Serving cell (community of the current access of this drive test terminal) and starts access the time T1 of each community and leave the time T2 of this community.
Drive test terminal is when accessing community and carrying out drive test, and trigger network configuration carrier aggregation function, so that the rrc layer receiving the PCI and frequency that carry auxiliary community that base station issues is connected reprovision signaling; Whether issuing this signaling as base station, is not that this drive test terminal controls.
The PCI that physical record can access successively for drive test terminal is i
1, i
2..., i
c, drive test terminal accesses the corresponding time period of each PCI successively.When recording period, two moment records can be passed through, namely a PCI and two moment leaving this PCI are accessed, in the present embodiment, the subscript 1 of i represents mark to the sequence number accessing PCI successively to C, and the mark of fict PCI, the subscript for time period t represents the time period of which PCI of access, wherein, C is total number of PCI of drive test terminal access in drive test process, C be greater than 2 integer.
When specific implementation, according to actual needs, can also record other drive test information, frequency RSRP and SINR, multipath number, time delay and channel signal as corresponding in PCI each in each time period, carry out performance evaluation after determining carrier aggregation subdistrict.
During the drive test of outfield, can use the equipment installing drive test software, as a PC etc., the relevant drive test data of record, for determining whether there is carrier aggregation subdistrict.Hereafter for convenience, the equipment of this installation drive test software is called testing equipment.
Be driver test system schematic diagram in the embodiment of the present application see Fig. 1, Fig. 1.In Fig. 1, testing equipment is connected with sweep generator with drive test terminal, and road measuring device record drive test terminal and sweep generator carry out drive test data during drive test, and analyze, to determine whether there is the community that the community accessed with drive test terminal is carrier aggregation subdistrict.
Below in conjunction with accompanying drawing, describe the process determining whether there is carrier aggregation subdistrict in the embodiment of the present application in detail.
Embodiment one
See Fig. 2, Fig. 2 be in the embodiment of the present application one carrier aggregation subdistrict find schematic flow sheet.Concrete steps are:
Step 201, testing equipment record drive test terminal and sweep generator carry out drive test data during drive test in LTE-A outfield.
Described drive test data comprises: the PCI of community, frequency; Wherein, described drive test terminal is when accessing community and carrying out drive test, and trigger network configures carrier aggregation function, and record starts access the time T1 of this community and leave the time T2 of this community.
When accessing certain community and carrying out drive test, if when the rrc layer receiving the PCI and frequency that carry auxiliary community that base station issues is connected reprovision signaling, also needs to record reception and be this signaling, and the PCI of community that carries of this signaling and frequency.
Step 202, this testing equipment is according to the drive test data of record, in the time period T2-T1 of described drive test terminal access community P, the rrc layer not receiving the PCI and frequency that carry auxiliary community that base station issues if determine is connected reprovision signaling, in the drive test data then obtained in time period T1-t to T2+t at sweep generator, find drive test data when sweep generator and drive test terminal distance are less than predeterminable range value.
Wherein, t is according to the speed configuration of drive test terminal movement;
When carrying out drive test, drive test terminal can access a community according to actual drive test and carry out drive test, also can access multiple community successively and carry out drive test.Determining whether there is respectively with it for each community of drive test terminal access in the embodiment of the present application is the community of carrier aggregation subdistrict.
The drive test data of record also comprises: GPS information;
Distance between sweep generator and drive test terminal is determined according to the GPS information in drive test data.
Step 203, if there is the frequency that frequency is not equal to community P in the drive test data that this testing equipment finds, the community S of the integral multiple of 300kHz is spaced apart with the frequency of described community P, and the frequency of the frequency of community P and community S is carrier aggregation frequency range in third generation partner program (3GPP) specification combines, then determine that community P and community S be the probability of carrier aggregation subdistrict is Q1.
Wherein, Q1 is greater than 0, and is less than 100%.
Community P and community S is the probability of carrier aggregation subdistrict when being Q1, and indicating cell P and community S is doubtful carrier aggregation subdistrict.
Embodiment two
See Fig. 3, Fig. 3 be in the embodiment of the present application two carrier aggregation subdistrict find schematic flow sheet.Concrete steps are:
Step 301, the drive test data that testing equipment record drive test terminal and sweep generator obtain in drive test process.
Step 302, this testing equipment, according to described drive test data, in the time period T2-T1 of described drive test terminal access community P, determines whether that the rrc layer receiving the PCI and frequency that carry auxiliary community that base station issues is connected reprovision signaling, if so, performs step 303; Otherwise, perform step 304.
Step 303, this testing equipment determines that described rrc layer connects the PCI that carries in code reassignment signaling and community R corresponding to frequency, and the probability being carrier aggregation subdistrict with community P is 100%, process ends.
Step 304, in the drive test data that this testing equipment obtains at sweep generator in time period T1-t to T2+t, the distance found between sweep generator and drive test terminal is less than drive test data during predeterminable range value.
Step 305, drive test data when this testing equipment determines whether that the distance of searching between sweep generator and drive test terminal is less than predeterminable range value, if so, performs step 306; Otherwise, perform step 312.
Step 306, this testing equipment determines whether to exist in the drive test data found the frequency that frequency is not equal to community P, if so, performs step 307; Otherwise, perform step 312.
Step 307, this testing equipment determines whether there is the community S being spaced apart the multiple of 300kHz with the frequency of described community P, if so, performs step 308; Otherwise, perform step 312.
Step 308, this testing equipment determines that whether the frequency of the frequency of community P and community S is that carrier aggregation frequency range in third generation partner program (3GPP) specification combines, and if so, performs step 309; Otherwise, perform step 312.
Step 309, this testing equipment determines that whether the PCI of community S is identical with the PCI of community P, if so, performs step 310; Otherwise, perform step 311.
Step 310, this testing equipment determines that community P and community S be the probability of carrier aggregation subdistrict is Q2, process ends.
The value of the Q2 configured in the present embodiment is greater than Q1, and therefore, when probability is Q2, Liang Ge community is more doubtful carrier aggregation subdistrict.
Step 311, this testing equipment determines that community P and community S be the probability of carrier aggregation subdistrict is Q1, process ends.
Step 312, it is the community of carrier aggregation subdistrict that this testing equipment is determined not exist with community P.
Q1 and Q2 in the embodiment of the present application when specific implementation, according to determining in practical application that whether Liang Ge community is that the degree of doubtful carrier aggregation subdistrict is configured.
Determine the carrier aggregation subdistrict determined, doubtful carrier aggregation subdistrict, more doubtful carrier aggregation subdistrict in the embodiment of the present application, based on the drive test data of sweep generator, the covering, function, performance etc. of LTE-A carrier aggregation network can be analyzed further.
The existing drive test terminal of LTE-A and the sweep generator equipment of LTE is utilized in the embodiment of the present application, complete the drive test process of LTE-A carrier aggregation function, do not need to develop new test instrumentation equipment, consider drive test terminal and sweep generator data, the measure error introduced by equipment can be reduced.And according to information such as drive test terminal rrc layer signaling, community PCI, frequencies, community being mapped as carrier aggregation subdistrict, doubtful carrier aggregation subdistrict and more doubtful carrier aggregation subdistrict, graduation farthest finds carrier aggregation subdistrict.
Based on same inventive concept, the application also proposes a kind of carrier aggregation subdistrict and finds device.It is the apparatus structure schematic diagram being applied to above-mentioned technology in the embodiment of the present application see Fig. 4, Fig. 4.This device comprises: record cell 401 and determining unit 402;
Record cell 401, for recording drive test data when drive test terminal and sweep generator carry out drive test in LTE-A outfield, described drive test data comprises: the PCI of community, frequency; Wherein, described drive test terminal is when accessing community and carrying out drive test, and trigger network configures carrier aggregation function, and record starts access the time T1 of this community and leave the time T2 of this community;
Determining unit 402, for the drive test data that records according to record cell 401 in the time period T2-T1 of described drive test terminal access community P, the rrc layer not receiving the PCI and frequency that carry auxiliary community that base station issues if determine is connected reprovision signaling, in the drive test data then obtained in time period T1-t to T2+t at sweep generator, find drive test data when sweep generator and drive test terminal distance are less than predeterminable range value; Wherein, t is according to the speed configuration of drive test terminal movement; If there is the frequency that frequency is not equal to community P in the drive test data found, the community S of the integral multiple of 300kHz is spaced apart with the frequency of described community P, and the frequency of the frequency of community P and community S is carrier aggregation frequency range in third generation partner program (3GPP) specification combines, then determine that community P and community S be the probability of carrier aggregation subdistrict is Q1, wherein, Q1 is greater than 0, and is less than 100%.
Preferably,
Determining unit 402, determines that if be further used for the PCI of community S is identical with the PCI of community P, then determine that community P and community S be the probability of carrier aggregation subdistrict is Q2, wherein, Q2 is greater than Q1, and is less than 100%.
Preferably,
Determining unit 402, be further used in the time period T2-T1 of described drive test terminal access community P, if the rrc layer receiving the PCI and frequency that carry auxiliary community that base station issues is connected reprovision signaling, then determine that described rrc layer connects the PCI that carries in code reassignment signaling and community R corresponding to frequency, the probability being carrier aggregation subdistrict with community P is 100%.
Preferably,
Determining unit 402, be further used for determining described sweep generator and drive test terminal distance according to the GPS information in drive test data, described drive test data also comprises: GPS information.
The unit of above-described embodiment can be integrated in one, and also can be separated deployment; A unit can be merged into, also can split into multiple subelement further.
In sum, the application, by the drive test data obtained when outfield drive test drive test terminal and sweep generator, merges, obtains the information being configured with the community of carrier aggregation function in network, realize the drive test process of LTE-A carrier aggregation function.Can be classified by the program and farthest find carrier aggregation subdistrict.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (8)
1. a carrier aggregation subdistrict discover method, is characterized in that, the method comprises:
Record drive test terminal and sweep generator strengthen in LTE-A outfield drive test data when carrying out drive test at Long Term Evolution, and described drive test data comprises: the Physical Cell Identifier PCI of community, frequency; Wherein, described drive test terminal is when accessing community and carrying out drive test, and trigger network configures carrier aggregation function, and record starts access the time T1 of this community and leave the time T2 of this community;
According to the drive test data of record, in the time period T2-T1 of described drive test terminal access community P, do not receive the PCI carrying auxiliary community that base station issues if determine and be connected reprovision signaling with the radio resource control rrc layer of frequency, in the drive test data then obtained in time period T1-t to T2+t at sweep generator, find drive test data when sweep generator and drive test terminal distance are less than predeterminable range value; Wherein, t is according to the speed configuration of drive test terminal movement;
If there is the frequency that frequency is not equal to community P in the drive test data found, the community S of the integral multiple of 300kHz is spaced apart with the frequency of described community P, and the frequency of the frequency of community P and community S is carrier aggregation frequency range in third generation partner program 3GPP specification combines, then determine that community P and community S be the probability of carrier aggregation subdistrict is Q1, wherein, Q1 is greater than 0, and is less than 100%.
2. method according to claim 1, is characterized in that, describedly determines that community P and community S is that after the probability of carrier aggregation subdistrict is Q1, described method comprises further:
If determine, the PCI of community S is identical with the PCI of community P, then determine that community P and community S be the probability of carrier aggregation subdistrict is Q2, wherein, Q2 is greater than Q1, and is less than 100%.
3. method according to claim 1, is characterized in that, described method comprises further:
In the time period T2-T1 of described drive test terminal access community P, if the rrc layer receiving the PCI and frequency that carry auxiliary community that base station issues is connected reprovision signaling, then determine that described rrc layer connects the PCI that carries in code reassignment signaling and community R corresponding to frequency, the probability being carrier aggregation subdistrict with community P is 100%.
4. the method according to claim 1-3 any one, is characterized in that, described drive test data also comprises: global position system GPS information;
Described sweep generator and drive test terminal distance are determined according to the GPS information in drive test data.
5. carrier aggregation subdistrict finds a device, and it is characterized in that, this device comprises: record cell and determining unit;
Described record cell, strengthen in LTE-A outfield drive test data when carrying out drive test for recording drive test terminal and sweep generator at Long Term Evolution, described drive test data comprises: the Physical Cell Identifier PCI of community, frequency; Wherein, described drive test terminal is when accessing community and carrying out drive test, and trigger network configures carrier aggregation function, and record starts access the time T1 of this community and leave the time T2 of this community;
Described determining unit, for according to the drive test data of described recording unit records in the time period T2-T1 of described drive test terminal access community P, do not receive the PCI carrying auxiliary community that base station issues if determine and be connected reprovision signaling with the radio resource control rrc layer of frequency, in the drive test data then obtained in time period T1-t to T2+t at sweep generator, find drive test data when sweep generator and drive test terminal distance are less than predeterminable range value; Wherein, t is according to the speed configuration of drive test terminal movement; If there is the frequency that frequency is not equal to community P in the drive test data found, the community S of the integral multiple of 300kHz is spaced apart with the frequency of described community P, and the frequency of the frequency of community P and community S is carrier aggregation frequency range in third generation partner program 3GPP specification combines, then determine that community P and community S be the probability of carrier aggregation subdistrict is Q1, wherein, Q1 is greater than 0, and is less than 100%.
6. device according to claim 5, is characterized in that,
Described determining unit, determines that if be further used for the PCI of community S is identical with the PCI of community P, then determine that community P and community S be the probability of carrier aggregation subdistrict is Q2, wherein, Q2 is greater than Q1, and is less than 100%.
7. device according to claim 5, is characterized in that,
Described determining unit, be further used in the time period T2-T1 of described drive test terminal access community P, if the rrc layer receiving the PCI and frequency that carry auxiliary community that base station issues is connected reprovision signaling, then determine that described rrc layer connects the PCI that carries in code reassignment signaling and community R corresponding to frequency, the probability being carrier aggregation subdistrict with community P is 100%.
8. the device according to claim 5-7 any one, is characterized in that,
Described determining unit, be further used for determining described sweep generator and drive test terminal distance according to the global position system GPS information in drive test data, described drive test data also comprises: GPS information.
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