CN100518357C - A test method for testing the influence of interference between mobile communication systems - Google Patents

Abstract

The invention relates to a test method for testing interference influence between mobile communication systems, which is used for a TD-SCDMA system and comprises at least 4 base stations, a plurality of terminal devices and an Iub interface signaling monitor; at least more than 3 base stations are used for simulating an interference system; the test method mainly carries out system loading according to a pair of service time slots consisting of an uplink service time slot and a downlink service time slot, and carries out various interference tests on the premise of the loading. The invention comprehensively constructs the conditions of TD-SCDMA inter-base station interference, inter-base station-terminal interference, inter-terminal interference and the like, comprehensively considers two relations of the same and different configurations of the uplink and downlink service time slots of an interference system and an interfered system, considers different space distances among equipment, carries out comparison and comparison tests, can comprehensively evaluate the interference influence, directly obtains the conclusion of interference avoidance measures including frequency interval and/or space distance and the like through the tests and guides network deployment.

Description

A test method for testing the influence of interference between mobile communication systems

technical field

The present invention relates to a kind of test method for testing the influence of interference between mobile communication systems, and in particular to a test method for testing the influence of interference between Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) systems method.

Background technique

Research on the interference caused by unwanted radiation, blocking, etc. within the wireless communication system and between systems, evaluate the degree of interference, and find effective measures to avoid interference, so as to efficiently and reliably use precious frequency resources and provide wireless communication services , has always been an important content in the research and application of wireless communication systems.

Since the 3rd Generation cellular mobile communication system (the 3rd Generation) (hereinafter referred to as 3G) was put forward by the standard, due to various 3G standards (including TD-SCDMA, Wideband Code Division Multiple Access (WCDMA), code Multiple Access 2000 (CodeDivision Multiple Access 2000, referred to as CDMA2000)) needs to coexist with each other, and the 3G system also needs to coexist with other wireless communication systems such as the existing second-generation cellular mobile communication system, so the interference related to the 3G system is abnormal complex. International and domestic standardization organizations such as the International Telecommunication Union (ITU for short), the 3rd Generation Partnership Project (3GPP for short), and the China Communications Standards Association (CCSA for short) are formulating 3G-related standards. During the process, an in-depth study was carried out on 3G-related interference issues. However, this kind of research mainly adopts the method of qualitative analysis calculation or Monte Carlo simulation. The reliability of qualitative analysis calculation results depends heavily on the determination of technical indicators or models such as equipment performance and wireless environment parameters. Generally, it is only suitable for analyzing the interference between base stations and base stations, and in most cases the results tend to be pessimistic. Monte Carlo simulation is a statistical simulation method. Using this method to evaluate the interference impact is equivalent to obtaining a statistical data on the interference impact under the given network deployment model and equipment performance conditions. Therefore, there are certain specific The possibility of "covering" very serious interference in the scene without being noticed by researchers cannot fully and truly reflect various interference situations and their impact.

Compared with qualitative analysis calculation or Monte Carlo simulation, constructing an actual wireless communication system and testing interference is also an important method to evaluate the impact of interference. Due to the complexity of the operation, the interference test generally uses a small number of users relative to the system capacity as the system load, so it cannot reflect the interference generated by the system to other systems or the interference suffered by the system at or near full load. .

The general interference test method mainly uses special instruments such as spectrum analyzers and signal analyzers to measure the signal strength of useful signals and interference signal strength. After obtaining these measured values, it is combined with specific wireless communication system equipment indicators and network parameters. Indicators to further analyze the degree of influence of interference, so the results are not intuitive enough.

Contents of the invention

In view of the above, the purpose of the present invention is to provide a test method for testing the influence of interference between TD-SCDMA systems.

The unique problem of TD-SCDMA inter-system interference impact test is that TD-SCDMA is a Time Division Duplex (TDD for short) system, and the uplink business time slot (Time Slot, TS for short) in the TD-SCDMA system The conversion point between downlink service time slots can be flexibly configured. When the configuration of the switching point between the uplink service time slot and the downlink service time slot of two TD-SCDMA systems is the same, the interference between the systems is mainly the interference between the terminal equipment and the base station equipment. And when the configuration of the switching point between the uplink service time slot and the downlink service time slot of the two TD-SCDMA systems is different, for example, the configuration of one TD-SCDMA system in the six service time slots of TS1-TS6 (that is, the uplink and downlink The business time slot configuration ratio is 3:3) is:

TS1, TS2, TS3: uplink service time slots,

TS4, TS5, TS6: time slots for downlink services,

And the service time slot configuration of another TD-SCDMA system covering the same area (that is, the ratio of uplink and downlink service time slot configuration is 2:4) is:

TS1, TS2: Uplink service time slots,

TS3, TS4, TS5, TS6: downlink service time slots.

In this case, among the interference between the two systems, the base station-base station interference and the terminal-terminal interference will be the main interference, which will have a great impact on the normal operation of the two TD-SCDMA systems. Considering that there are multiple possibilities for the configuration of business time slots in each system, the combination relationship between the configurations of business time slots of the two TD-SCDMA systems is even more diverse. In order to reduce the complexity of the test as much as possible, the present invention avoids various configuration relationships, and the uplink and downlink service time slot configurations of the two TD-SCDMA systems are both 3:3, one is 3:3 and the other system is 2:4 For these two configurations, corresponding interference tests are carried out, and the results can reflect various possible system configurations.

The invention proposes to load the TD-SCDMA system according to a pair of service time slots composed of one uplink service time slot and one downlink service time slot, such as TS3/TS6, and carry out various interference tests under the loading premise. In this way, using a small number of terminals, for example, 8 terminals to carry out Adaptive Multi Rate (Adaptive Multi Rate) (hereinafter referred to as AMR) voice service can achieve the full load or close to full load of the service time slot pair, which is simple and feasible, and can reflect the system or The degree of interference impact of the network at full load and therefore closer to the actual application of the network.

The present invention proposes to directly use public measurement and special measurement (such as Received Total Wideband Power) (hereinafter referred to as RTWP) and time slot interference signal code domain power (Interference Signal Code Power) (hereinafter referred to as RTWP) of the base station equipment to the cell in the interference test. ISCP for short) and traffic channel code domain transmit power, etc.), measurement of terminal equipment (such as downlink block error rate, signal to interference ratio (Signal to Interference Ratio) of downlink traffic channel (hereinafter referred to as SIR), terminal transmit power, etc.) , to evaluate the impact of interference signals on base station equipment or terminal equipment, and directly reflect the degree of interference.

In order to achieve the above object, a kind of test system of the present invention that tests the influence of interference between mobile communication systems is suitable for TD-SCDMA systems, including: at least 4 base stations, a plurality of terminal equipment and an Iub interface signaling monitor; wherein the above-mentioned The base station is used to simulate the interfering and interfered system, and at least three of the above-mentioned base stations are used to simulate the interfering system to generate interference signals.

Wherein, the above-mentioned Iub interface signaling monitor is used for monitoring on the Iub interface between the above-mentioned interfered system base station and a radio network controller (Radio Network Controller, RNC for short). In addition, the spatial distance and distribution relationship between the base station of the interfered system and the base stations of the interfering system, as well as the working frequency interval can be determined and configured according to specific test requirements.

In order to achieve the above object, a test method for testing the influence of interference between mobile communication systems of the present invention is applicable to TD-SCDMA systems, and the configuration of the switching point between the uplink and downlink service time slots of the interfering system and the interfered system is different, including the following step:

Step 1. Configure the uplink and downlink service time slots of the interfering system and the interfered system respectively, and the resource allocation strategy of the interfering system and the interfered system is to set a pair of services consisting of an uplink service time slot and a downlink service time slot The time slot has the highest priority;

Step 2. Adjust the interference protection band between the above-mentioned interfering system and the interfered system and test each base station, and select a test location in the adjacent coverage area of the above-mentioned interfering system base station and the interfered system base station;

Step 3. Determine whether the above-mentioned inter-system interference is inter-terminal interference or inter-base station interference. If it is inter-terminal interference, perform step 4; if it is inter-base station interference, perform step 6;

Step 4. Close the above-mentioned interfering system base station, use the terminal to initiate a call in the above-mentioned interfered system base station and keep it, use the terminal to measure and record the relevant parameter values on the terminal side, and use the Iub interface signaling monitor to measure and record the relevant parameters on the base station side value;

Step 5. Turn on the base station of the above-mentioned interference system, and load multiple terminals on a pair of service time slots formed by an uplink service time slot and a downlink service time slot of the interference system set in the above step 1 to perform AMR voice services. Full load; use the terminal in the above-mentioned interfered system base station to initiate and maintain the AMR voice service, and measure the relevant parameter values of the terminal side and the relevant parameter values of the base station side described in step 4 within a period of time; then perform step 8;

Step 6, the above-mentioned interfering system base station is closed, use a plurality of terminals in the above-mentioned interfered system base station to carry out the AMR voice service and keep, utilize the Iub interface signaling monitor to measure and record the relevant parameter values of the base station side;

Step 7. Turn on the base station of the above-mentioned interference system, and load multiple terminals on a pair of service time slots formed by an uplink service time slot and a downlink service time slot of the interference system set in the above step 1 to perform AMR voice services. Full load; use multiple terminals in the above-mentioned interfered system base station to initiate an AMR voice call, observe whether the call can be established, and record the number of calls that can be successfully established and maintained stably, and continue to measure and record the correlation between the base station side described in step 6 parameter value for a period of time;

Step 8, end.

Further, the above test method also includes: the same service time slot in a pair of service time slots composed of an uplink service time slot and a downlink service time slot of the above-mentioned interfering system and the interfered system set in the above step 1, Uplink service time slots for the interfering system and downlink service time slots for the interfered system, or downlink service time slots for the interfering system and uplink service time slots for the interfered system.

Select other test sites to re-test with the above test method, and compare the mean and variance of the measured values of each test site, and use one or any combination of table, bar graph or line graph to represent the differences between the test sites.

Further, if the above-mentioned inter-system interference is inter-terminal interference, the above-mentioned test method also includes changing the operating frequency point interval and the spatial distance between the terminals configured by the above-mentioned interfering system base station and the interfered system base station, and performing the above-mentioned test method multiple times Test; if it is inter-base station interference, the above test method also includes changing the working frequency point interval, and performing multiple tests with the above test method for different spatial distances between the above-mentioned interfering system base station and the interfered system base station.

In order to achieve the above object, a test method for testing the influence of interference between mobile communication systems of the present invention is suitable for TD-SCDMA systems, and the configuration of the switching point between the uplink and downlink service time slots of the interfering system and the interfered system is the same, including the following step:

Step 1. Configure the uplink and downlink service time slots of the interfering system and the interfered system respectively, and the resource allocation strategy of the interfering system and the interfered system is to set a pair of services consisting of an uplink service time slot and a downlink service time slot The time slot has the highest priority;

Step 2. Commissioning the base stations between the interfering system and the interfered system, and selecting a test location in the adjacent coverage area of the interfering system base station and the interfered system base station;

Step 3, shut down the above-mentioned interfering system base station, use multiple terminals in the above-mentioned interfered system base station to carry out the AMR voice service and keep it, use the terminal to measure and record the relevant parameter values of the terminal side, and use the Iub interface signaling monitor to measure and record Related parameter values at the base station side;

Step 4. Turn on the base station of the above-mentioned interference system, and load multiple terminals on a pair of service time slots formed by an uplink service time slot and a downlink service time slot of the interference system set in the above step 1 to perform AMR voice services to achieve Full load; use multiple terminals in the above-mentioned interfered system base station to initiate an AMR voice call, observe whether the call can be established, and record the number of calls that can be successfully established and maintained stably, and continue to measure and record the related information on the terminal side described in step 3. Parameter values and related parameter values at the base station side for a period of time;

Step 5, end.

Further, the above test method further includes: a pair of service time slots consisting of an uplink service time slot and a downlink service time slot of the interfering system and the interfered system set in the above step 1 are the same.

Select other test sites to re-test with the above test method, and compare the mean and variance of the measured values of each test site, and use one or any combination of table, bar graph or line graph to represent the differences between the test sites.

Further, the above test method also includes:

Change the working frequency point interval, and perform multiple tests with the above test method for the different spatial distances between the base stations of the interfering system and the interfered system, and the different spatial distances between terminals.

Further, the terminal-side related parameter values measured and recorded by the terminal include at least one or any combination of the downlink block error rate, the SIR of the downlink traffic channel, and the transmit power of the terminal within a period of time; The base station-side related parameter values measured and recorded by the monitor include at least one or any combination of RTWP, service time slot ISCP and service channel code domain transmit power measured by the base station within a period of time; the number of the above-mentioned multiple terminals is 8 .

The present invention comprehensively constructs situations including interference between TD-SCDMA base station equipment, interference between base station and terminal equipment, interference between terminal equipment, etc., and fully considers different frequency intervals between TD-SCDMA systems, and inter-base station equipment, terminal equipment and base station Different spatial distances from terminal equipment are compared and controlled to test, so that the impact of interference can be comprehensively evaluated, and the conclusion of interference avoidance measures including frequency separation and/or spatial distance can be obtained directly through the test to guide network deployment.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are described below in detail with accompanying drawings.

Description of drawings

Fig. 1 is the built test system of a preferred embodiment of the present invention;

Fig. 2 is the flow chart of the testing method of the present invention when the switching point configuration is different between uplink and downlink service time slots between TD-SCDMA systems;

Fig. 3 is a flow chart of the test method of the present invention when the configuration of the switching points between uplink and downlink service time slots between TD-SCDMA systems is the same.

Detailed ways

The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings.

Fig. 1 is the built test system of a preferred embodiment of the present invention; It comprises 4 base stations, wherein 3 base stations are used for simulating interference system to produce interference signal (base station 2, base station 3 and base station 4 among the figure), in addition A base station is used to simulate the interfered system (base station 1 in the figure). In addition to the base station, the test system also includes a certain number of terminal equipment and Iub interface signaling monitors.

Fig. 2 is the flow chart of the test method of the present invention when the uplink and downlink service time slot switching point configurations between TD-SCDMA systems are different; the interference under the different conditions of two TD-SCDMA system service time slot switching point configurations is mainly There are two cases of inter-terminal interference and inter-base station interference. The test methods for different cases are described below in conjunction with FIG. 2 .

The test method for inter-terminal interference includes the following steps:

Step 101, configure the uplink and downlink service time slots of the interfering system to be 3:3, and set the resource allocation strategy of the interfering system to TS3/TS6 service time slot pair with the highest priority; configure the uplink and downlink service time slots of the interfered system 2:4, and set the resource allocation strategy of the above-mentioned interfered system to be the highest priority for the TS1/TS3 service time slot pair;

Step 102. Adjust the interference protection bands between the above-mentioned interfering system and the interfered system, and test each base station to make it work normally; select a test location in the adjacent coverage area of the above-mentioned interfered system base station and the interfered system base station;

Step 103, shut down the base station of the above-mentioned interfering system, use the terminal to initiate and maintain the call in the base station of the above-mentioned interfered system, use the terminal to measure and record the downlink block error rate, SIR of the downlink traffic channel, terminal transmit power, etc. within a period of time, Use the Iub interface signaling monitor to record the RTWP, service time slot ISCP and service channel code domain transmit power measured by the base station;

Step 104, turn on the above-mentioned interfering system base station, and load 8 terminals on the TS3/TS6 service time slot pair of the above-mentioned interfering system to perform AMR voice services to reach full load; use terminals in the above-mentioned interfered system base station to initiate AMR voice services and Hold, measure each value described in above-mentioned step 103 in a period of time;

Step 105, select other test sites to re-test with the above-mentioned test method, and compare the mean value and variance of the measured values of each test site, and express the difference between each test site in the form of a table, a bar graph or a broken line graph;

Step 106: Change the working frequency point interval and the spatial distance between terminals configured by the base station of the interfering system and the base station of the interfered system, and perform multiple tests again with the above test method.

The test method for interference between base stations includes the following steps:

Step 201, configure the uplink and downlink service time slots of the interfering system to be 2:4, and set the resource allocation strategy of the interfering system as TS1/TS3 service time slot pair with the highest priority; configure the uplink and downlink service time slots of the interfered system 3:3, and set the resource allocation strategy of the above-mentioned interfered system to be the highest priority for the TS3/TS6 service time slot pair;

Step 202, adjust the interference protection band between the above-mentioned interfering system and the interfered system, and test each base station to make it work normally; select a test location in the adjacent coverage area of the above-mentioned interfered system base station and the interfered system base station;

Step 203, shut down the above-mentioned interfering system base station, use 8 terminals in the above-mentioned interfered system base station to carry out AMR voice service and keep it, and use the Iub interface signaling monitor to record the RTWP, service time slot ISCP and service measured by the base station within a period of time Channel code domain transmit power, etc.;

Step 204, turn on the base station of the interfering system, and load 8 terminals on the TS1/TS3 service time slot pair of the interfering system to perform AMR voice services to reach full load; use 8 terminals in the base station of the interfered system to initiate an AMR voice call , observe whether the call can be established, record the number of calls that can be successfully established and maintained stably, and continuously measure and record the above values for a period of time when the base station of the interference system is turned off;

Step 205, select other test sites to re-test with the above test method, and compare the mean value and variance of the measured values at each test site, and express the differences between the test sites in the form of tables, bar graphs or line graphs;

Step 206 , according to the different spatial distances between the base station of the interfered system and the base station of the interfering system, and changing the interval of operating frequency points, perform multiple tests again with the above test method.

Fig. 3 is the flow chart of the test method of the present invention when the uplink and downlink service time slot switching point configurations between TD-SCDMA systems are the same; the interference under the same condition of two TD-SCDMA system service time slot switching point configurations is mainly the base station -Inter-terminal interference, below in conjunction with Fig. 3, the test method to base station-inter-terminal interference comprises the following steps at this moment:

Step 301, configure the uplink and downlink service time slots of the interfering system and the interfered system to be the same, and both are 3:3; and set the resource allocation strategy of the interfering system and the interfered system to be TS3/TS6 service time slot pair with the highest priority ;

Step 302, commissioning the above-mentioned interfering system and each base station between the interfered system to make it work normally; in the adjacent coverage area of the above-mentioned interfered system base station and the interfering system base station, select a test location;

Step 303, turn off the base station of the interfering system, use 8 terminals in the base station of the interfered system to perform AMR voice services and keep them, and use the terminals to measure and record the downlink block error rate, SIR of the downlink traffic channel, and terminal transmission power for a period of time etc., use the Iub interface signaling monitor to record the RTWP, service time slot ISCP and service channel code domain transmit power measured by the base station within a period of time;

Step 304, turn on the base station of the interfering system, and load 8 terminals on the TS3/TS6 service time slot pair of the interfering system to perform AMR voice services to reach full load; use 8 terminals in the base station of the interfered system to initiate an AMR voice call , observe whether the call can be established, record the number of calls that can be successfully established and maintained stably, and continuously measure and record the above values for a period of time when the base station of the interference system is turned off;

Step 305, select other test sites to re-test with the above test method, and compare the mean value and variance of the measured values at each test site, and express the differences between the test sites in the form of tables, bar graphs or line graphs;

Step 306: Change the working frequency point interval, and perform multiple tests again with the above test method for the different spatial distances between the base stations of the interfering system, the base stations of the interfered system, and the different spatial distances between the terminals.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some changes and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the claims.

Claims (8)

1. a method of testing of testing effects of interference between mobile communication systems is applicable to TDS-CDMA system, and the transfer point configuration is different between the up and downlink business time slot of EVAC (Evacuation Network Computer Model) and disturbed system, it is characterized in that comprising the following steps:

Step 1, dispose the up of EVAC (Evacuation Network Computer Model) and disturbed system and downlink business time slot respectively, and the resource allocation policy of above-mentioned EVAC (Evacuation Network Computer Model) and disturbed system is that a pair of business time-slot priority that a uplink service time slot and downlink business time slot formed is set is the highest;

Step 2, interference protection band and the accent adjusted between above-mentioned EVAC (Evacuation Network Computer Model) and disturbed system are surveyed each base station, and select testing location in the neighboring coverage areas of above-mentioned EVAC (Evacuation Network Computer Model) base station and disturbed system base-station;

Disturbing between step 3, judgement said system is that terminal room disturbs or inter base station interference, if terminal room disturbs, then execution in step 4; If inter base station interference, then execution in step 6;

Step 4, above-mentioned EVAC (Evacuation Network Computer Model) base station is closed, the use terminal makes a call and keeps in above-mentioned disturbed system base-station, utilize terminal to measure and record end side related parameter values, and utilize Iub interface monitoring signaling instrument to measure and record base station side related parameter values;

Step 5, above-mentioned EVAC (Evacuation Network Computer Model) base station is opened, and load a plurality of terminals on a pair of business time-slot formed of uplink service time slot of the EVAC (Evacuation Network Computer Model) that in above-mentioned steps 1, is provided with and a downlink business time slot and carry out the adaptive multi-rate voice service and reach full load; In above-mentioned disturbed system base-station, use terminal to initiate adaptive multi-rate voice service and maintenance, measure end side related parameter values and base station side related parameter values described in the step 4 in a period of time; Execution in step 8 afterwards;

Step 6, above-mentioned EVAC (Evacuation Network Computer Model) base station is closed, in above-mentioned disturbed system base-station, used a plurality of terminals to carry out the adaptive multi-rate voice service and keep, utilize Iub interface monitoring signaling instrument to measure and record base station side related parameter values;

Step 7, above-mentioned EVAC (Evacuation Network Computer Model) base station is opened, and load a plurality of terminals on a pair of business time-slot formed of uplink service time slot of the EVAC (Evacuation Network Computer Model) that in above-mentioned steps 1, is provided with and a downlink business time slot and carry out the adaptive multi-rate voice service and reach full load; In above-mentioned disturbed system base-station, use a plurality of terminals to initiate the adaptive multi-rate voice call, observe and call out and to set up, and record can successfully be set up and the stable number of calls that keeps, and base station side related parameter values a period of time described in test constantly and the recording step 6;

Step 8, end.

2. method of testing according to claim 1 is characterized in that

Same business time-slot in a pair of business time-slot that uplink service time slot of above-mentioned EVAC (Evacuation Network Computer Model) that is provided with in the above-mentioned steps 1 and disturbed system and downlink business time slot are formed, EVAC (Evacuation Network Computer Model) is the uplink service time slot, is the downlink business time slot to disturbed system, or EVAC (Evacuation Network Computer Model) is the downlink business time slot, is the uplink service time slot to disturbed system;

The above-mentioned end side related parameter values of utilizing terminal to measure and write down comprises down link Block Error Rate, the signal interference ratio of downlink traffic channel and a kind of or combination in any in the terminal transmit power in a period of time at least;

Above-mentionedly utilize Iub interface monitoring signaling instrument to measure and the base station side related parameter values of record comprises a kind of or combination in any in reception gross power, slot interfering signal of time code domain power and the Traffic Channel sign indicating number territory transmitting power of base station measurement in a period of time at least;

The number of above-mentioned a plurality of terminals is 8.

3. method of testing according to claim 2 is characterized in that also comprising:

Select other testing location to test with above-mentioned method of testing again, and the relatively average and the variance of each testing location measured value, represent difference between each testing location with a kind of or combination in any in form, bar chart or the broken line graph.

4. according to claim 2 or 3 described method of testings, it is characterized in that also comprising:

As if disturbing between said system is that terminal room disturbs, and then also comprises the working frequency points interval, the terminal room space length that change above-mentioned EVAC (Evacuation Network Computer Model) base station and the configuration of disturbed system base-station, repeatedly tests with above-mentioned method of testing again;

If inter base station interference then also comprises changing working frequency points at interval, and at different spaces distance between above-mentioned EVAC (Evacuation Network Computer Model) base station and disturbed system base-station, repeatedly tests with above-mentioned method of testing again.

5. a method of testing of testing effects of interference between mobile communication systems is applicable to TDS-CDMA system, and the transfer point configuration is identical between the up and downlink business time slot of EVAC (Evacuation Network Computer Model) and disturbed system, it is characterized in that comprising the following steps:

Step 1, dispose the up of EVAC (Evacuation Network Computer Model) and disturbed system and downlink business time slot respectively, and the resource allocation policy of above-mentioned EVAC (Evacuation Network Computer Model) and disturbed system is that a pair of business time-slot priority that a uplink service time slot and downlink business time slot formed is set is the highest;

Step 2, accent are surveyed each base station between above-mentioned EVAC (Evacuation Network Computer Model) and disturbed system, and select testing location in the neighboring coverage areas of above-mentioned EVAC (Evacuation Network Computer Model) base station and disturbed system base-station;

Step 3, above-mentioned EVAC (Evacuation Network Computer Model) base station is closed, in above-mentioned disturbed system base-station, use a plurality of terminals to carry out adaptive multi-rate voice service and maintenance, utilize terminal to measure and record end side related parameter values, and utilize Iub interface monitoring signaling instrument to measure and record base station side related parameter values;

Step 4, above-mentioned EVAC (Evacuation Network Computer Model) base station is opened, and load a plurality of terminals on a pair of business time-slot formed of uplink service time slot of the EVAC (Evacuation Network Computer Model) that in above-mentioned steps 1, is provided with and a downlink business time slot and carry out the adaptive multi-rate voice service and reach full load; In above-mentioned disturbed system base-station, use a plurality of terminals to initiate the adaptive multi-rate voice call, observe and call out and to set up, and record can successfully be set up and the stable number of calls that keeps, and end side related parameter values and base station side related parameter values a period of time described in test constantly and the recording step 3;

Step 5, end.

6. method of testing according to claim 5 is characterized in that

Uplink service time slot of above-mentioned EVAC (Evacuation Network Computer Model) that is provided with in the above-mentioned steps 1 and disturbed system is identical with a pair of business time-slot that a downlink business time slot is formed;

The above-mentioned end side related parameter values of utilizing terminal to measure and write down comprises down link Block Error Rate, the signal interference ratio of downlink traffic channel and a kind of or combination in any in the terminal transmit power in a period of time at least;

Above-mentionedly utilize Iub interface monitoring signaling instrument to measure and the base station side related parameter values of record comprises a kind of or combination in any in reception gross power, slot interfering signal of time code domain power and the Traffic Channel sign indicating number territory transmitting power of base station measurement in a period of time at least;

The number of above-mentioned a plurality of terminals is 8.

7. method of testing according to claim 6 is characterized in that also comprising:

Select other testing location to test with above-mentioned method of testing again, and the relatively average and the variance of each testing location measured value, represent difference between each testing location with a kind of or combination in any in form, bar chart or the broken line graph.

8. according to claim 6 or 7 described method of testings, it is characterized in that also comprising:

Change working frequency points at interval, and, repeatedly test with above-mentioned method of testing again at different spaces distance, terminal room different spaces distance between above-mentioned EVAC (Evacuation Network Computer Model) base station and disturbed system base-station.

Images