WO2014183727A1

WO2014183727A1 - Communication interference measurement method, device and system

Info

Publication number: WO2014183727A1
Application number: PCT/CN2014/080009
Authority: WO
Inventors: 刘星; 李岩; 王斌; 任龙涛
Original assignee: 中兴通讯股份有限公司
Priority date: 2013-11-25
Filing date: 2014-06-16
Publication date: 2014-11-20
Also published as: CN104660354B; CN104660354A

Abstract

The present invention discloses a communications interference measurement method, device and system, said method comprising: a first category of network node separates an amount of time-frequency resources on a main system idle frequency spectrum; indication information is generated and sent in accordance with the time-frequency resources; measurement results are received.

Description

Communication interference measurement method, device and system

The present invention relates to wireless communication technologies, and in particular, to a communication interference measurement method, apparatus and system. Background technique

With the continuous advancement of radio technology, a variety of radio services have emerged, and the spectrum resources supported by the radio service are limited. In the face of increasing demand for bandwidth, spectrum resources are extremely tight; On the other hand, in the traditional fixed spectrum allocation mode, the utilization of spectrum resources is not high. In a sense, this spectrum allocation system that is fixedly assigned to the authorization system creates a situation in which the spectrum resources are extremely tight. Cognitive radio technology breaks the traditional fixed spectrum allocation system, dynamically allocates spectrum between systems, and improves the efficiency of spectrum utilization. Typically, as people's daily communication needs continue to increase, they are not satisfied with simple voice data communication. The proportion of video streaming services in people's communication life is increasing, which requires greater bandwidth as a support, international mobile phones. (International Mobile Telecom, IMT) The system shows an unprecedented spectrum tension, and for the broadcast television system (Television, TV), there is a large amount of available space for spectrum resources, such as the spectrum of some broadcast TV systems. It has not been used in some areas; some broadcast TV system spectrums are covered in some areas, but they are not used at certain moments, and the overall utilization rate is low. The fixed spectrum allocation method makes the above unused spectrum resources unable to be reused, for example, cannot be used by the IMT system. Through the cognitive radio technology IMT system, by acquiring the information of the broadcast television system, it is waiting for the unused spectrum resources of the radio and television system in space and time, namely the TV white space (TVWS), thereby improving the spectrum of the broadcast television system. Utilization rate has improved the spectrum tension of the IMT system. This secondary system opportunistically occupies the spectrum usage of the spectrum resources of the main system, and must ensure effective protection for the primary user. That is, when the secondary system uses the spectrum resources of the primary system, it cannot cause harmful interference to the primary system user. This is cognitive radio. Prerequisites that technology can achieve. In order to achieve such a goal, the secondary system optionally uses spectrum sensing technology to monitor the presence of the primary user, so that when the primary user on the spectrum resource occupied by the secondary system is found to reappear, the spectrum resource is promptly withdrawn, avoiding The interference of the primary user.

In the prior art, the protection of the main system is realized by the limitation of the maximum transmission power, that is, the main system is interfered by the secondary system within a certain range, and the digital television (DTV) system is taken as an example, and the position probability of the DTV system is generally considered. A loss of less than 0.1% means no interference. If the maximum power limit is too wide, primary system protection may not be possible; if the maximum power limit is too strict, it may cause the secondary system to have no TVWS spectrum available. Therefore, how to accurately know the interference relationship between the secondary system base station and the reference point of the coverage of the primary system becomes an inevitable basic technical problem, which is the premise of accurately obtaining the maximum transmission power limit. See Figure 1 for the relationship between the secondary system base station and the reference point of the primary system coverage. However, at present, the prior art cannot accurately know the interference relationship of the secondary system base station to the reference point of the coverage of the primary system.

In addition, another necessary condition that TVWS can use is that each secondary system can coexist on TVWS, and use TVWS resources without interference, that is, interference between them is within tolerance. The interference relationship between the base stations of each secondary system is shown in Figure 2. Since the system cannot know the interference relationship between cells in advance before configuring the operating parameters of TVWS, the spectrum allocation and power allocation cannot be accurately determined. Decision making, in turn, cannot guarantee the coexistence of secondary system cells. Summary of the invention

In order to solve the existing technical problems, the embodiments of the present invention mainly provide a communication interference measurement method, apparatus, and system.

The technical solution of the embodiment of the present invention is implemented as follows: An embodiment of the present invention provides a communication interference measurement method, where the method includes:

The first type of network node divides a time-frequency resource on the idle spectrum of the primary system;

Generating indication information according to the time-frequency resource and transmitting the indication information;

Receive measurement results.

The embodiment of the present invention further provides a communication interference measurement method, where the method includes: receiving, by a second type of network node, indication information;

Performing a transmitting operation according to the indication information, and/or measuring interference between the second type of network nodes according to the indication information, and transmitting the measurement result.

The invention also provides a communication interference measurement method, the method comprising:

The first type of network node generates the indication information according to the time-frequency resource and sends the indication information;

The second type of network node receives the indication information;

The second type of network node performs a transmitting operation according to the indication information;

The second type of network node measures the interference between the second type of network nodes according to the indication information, and sends the measurement result;

The first type of network node receives the measurement result.

The embodiment of the present invention provides a network node, where the network node is a first type of network node, and the network node includes:

The dividing unit is configured to allocate a time-frequency resource on the idle spectrum of the primary system; the processing unit is configured to generate indication information according to the time-frequency resource and send the indication information;

The first receiving unit is configured to receive the measurement result.

The embodiment of the present invention further provides a network node, where the network node is a second type of network node, and the network node includes:

a second receiving unit, configured to receive indication information;

a first execution unit configured to perform a transmitting operation according to the indication information; and/or, The second execution unit is configured to measure interference between the second type of network nodes according to the indication information, and send the measurement result.

It can be seen that the technical solution of the embodiment of the present invention includes: the first type of network node divides a time-frequency resource on the idle spectrum of the primary system; generates the indication information according to the time-frequency resource and sends the received information; and receives the measurement result. Therefore, the embodiment of the present invention can accurately obtain the interference relationship between the secondary system base stations by transmitting the indication information generated according to the time-frequency resource and receiving the measurement result. DRAWINGS

Figure 1 is a schematic diagram of interference between the secondary system and the primary system;

Figure 2 is a schematic diagram of coexistence of interference between secondary systems;

FIG. 3 is a schematic flowchart of an embodiment of a communication interference measurement method according to an embodiment of the present invention;

4 is a schematic flowchart of another embodiment of a method for measuring communication interference according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of another embodiment of a method for measuring communication interference according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of an embodiment of a network node according to an embodiment of the present invention; FIG. 7 is a schematic structural diagram of another embodiment of a network node according to an embodiment of the present invention; A schematic structural diagram of an embodiment of a communication interference measurement system;

FIG. 9 is a schematic flow chart of a first embodiment of a communication interference measurement method according to the present invention; FIG.

10 is a schematic flow chart of a second embodiment of a method for measuring communication interference according to the present invention;

FIG. 11 is a schematic diagram of an interference measurement scenario of a third and sixth embodiment of a communication interference measurement method according to the present invention; FIG. FIG. 12 is a schematic flowchart diagram of a third embodiment of a method for measuring communication interference according to the present invention; FIG.

FIG. 13 is a schematic diagram of an interference measurement scenario of a fourth embodiment of a communication interference measurement method according to the present invention; FIG.

14 is a schematic flow chart of a fourth embodiment of a method for measuring communication interference according to the present invention;

15 is a schematic diagram of an interference measurement scenario of a fifth embodiment of a communication interference measurement method according to the present invention;

16 is a schematic flow chart of a fifth embodiment of a communication interference measurement method according to the present invention;

FIG. 17 is a schematic flow chart of a sixth embodiment of a method for measuring communication interference according to the present invention. detailed description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The embodiments of the present invention relate to two types of network nodes, namely: a first type of network node and a second type of network node; in an actual network, the first type of network node may be: a primary user protection management node or a management secondary system inter-communication coexistence a reconfiguration management node; wherein the primary user protection management node may be a geo-location database (Database, DB), and the reconfiguration management node that manages coexistence of inter-system interference may be: Spectrum Controller (SC), Central Control Point (CCP), Reconfiguration Management Module, Reconfiguration Function Module, Reconfiguration Entity, Advanced Positioning entities, advanced positioning features, coexistence capabilities. The second type of network node may be one of the following network elements: a base station, an access point, a terminal, and a measurement node specifically set for measurement.

Typical primary system idle spectrum resources, such as TVWS spectrum, ie 470MHz-790MHz Spectrum resources not used by the main system.

An embodiment of a communication interference measurement method provided by the present invention, as shown in FIG. 3, the method includes:

301. The first type of network node divides a time-frequency resource on the idle spectrum of the primary system;

302. Generate indication information according to the time-frequency resource and send the indication information.

303. Receive measurement results.

Preferably, the dividing the time-frequency resource includes:

Selecting an idle spectrum in the idle spectrum of the primary system as a measurement-specific spectrum for interference measurement, and configuring an occupation time of the measurement-dedicated spectrum.

Preferably, the size of the measurement dedicated spectrum is:

System bandwidth of the primary system; or

An integer multiple of the system bandwidth of the primary system; or,

The system bandwidth of the secondary system.

Preferably, the indication information comprises a transmission parameter and/or a measurement parameter.

Preferably, the transmitting parameter includes at least one of the following: a radio frequency point, a bandwidth, a transmit power of a transmitting cell, a radio signal sequence transmitted by a transmitting cell, a cell serial number (ID) of a transmitting cell, and a radio access technology of a transmitting cell. , starting time of launch time, launch period, launch duration, time offset.

Preferably, the measurement parameter includes at least one of the following: a measurement frequency point, a bandwidth, a radio signal sequence transmitted by the measured cell, a cell ID of the measured cell, a radio access technology of the measured cell, a measurement time start point, and a measurement period. , measurement duration, time offset.

Another communication interference measurement method provided by the embodiment of the present invention, as shown in FIG. 4, the method includes:

401. The second type network node receives the indication information.

402. Perform a transmitting operation according to the indication information. 403. Measure, according to the indication information, interference between the second type of network nodes, and send the measurement result.

Here, the measurements include measurements of interference between secondary user equipment, and/or measurements of interference to primary users by secondary user equipment.

Here, the second type of network node forms the measurement result into feedback signaling and sends it to the first type of network node and/or other second type of network node.

In practical applications, another communication interference measurement method may include only step 401 and step 402, or only step 401 and step 403.

Preferably, the transmitting operation comprises: generating a wireless signal sequence according to the indication information, and transmitting.

Here, the indication information includes a transmission parameter;

The transmitting operation includes: generating a wireless signal sequence according to a transmission parameter in the indication information, and transmitting.

Preferably, the method further includes: receiving a wireless signal sequence;

Correspondingly, the measuring comprises: measuring, according to the indication information, a wireless signal transmitted by a second type of network node transmitting the wireless signal sequence.

Here, the indication information includes a measurement parameter; the measurement includes: measuring, according to the measurement parameter in the indication information, a wireless signal transmitted by a second type of network node that transmits the wireless signal sequence.

Preferably, the measurement result includes at least one of the following: a frequency point, a bandwidth, an ID of the measured cell, an ID of the measured cell, a location of the measured cell, a location of the measured cell, an actual interference generated by the measured cell, and a measured cell. The actual interference received, measuring the interference margin that the cell can tolerate.

Another communication interference measurement method provided by the embodiment of the present invention, as shown in FIG. 5, the method includes:

501. The first type of network node divides a time-frequency resource on the idle spectrum of the primary system; 502. The first type of network node generates the indication information according to the time-frequency resource and sends the indication information.

503. The second type network node receives the indication information.

504. The second type of network node performs a transmitting operation according to the indication information.

505. The second type of network node measures the interference between the second type of network nodes according to the indication information, and sends the measurement result.

506. The first type of network node receives the measurement result.

A network node is provided in the embodiment of the present invention. As shown in FIG. 6, the network node includes: a dividing unit 601 configured to allocate a time-frequency resource on a primary system idle spectrum; and the processing unit 602 is configured as a data base. The time-frequency resource generates indication information and sends the information; the first receiving unit 603 is configured to receive the measurement result.

Preferably, the dividing unit 601 is configured to select an idle spectrum in the idle spectrum of the primary system as a measurement-dedicated spectrum for interference measurement, and configure an occupation time of the measurement-dedicated spectrum.

Another network node provided by the embodiment of the present invention, as shown in FIG.

The second receiving unit 701 is configured to receive indication information;

The first executing unit 702 is configured to perform a transmitting operation according to the indication information;

The second executing unit 703 is configured to measure the interference between the second type of network nodes according to the indication information, and send the measurement result.

In a practical application, another network node may include only the second receiving unit 701 and the first executing unit 702, or may only include the second receiving unit 701 and the second executing unit 703.

Preferably, the first execution unit 702 is configured to generate a wireless signal sequence according to the indication information, and transmit.

Preferably, the second executing unit 703 is configured to receive a wireless signal sequence, and measure, according to the indication information, a wireless signal transmitted by a second type of network node that transmits the wireless signal sequence. A communication interference measurement system according to an embodiment of the present invention, as shown in FIG. 8, the system includes a first type of network node 801 and a second type of network node 802, and the first type of network node 801 is at least one. At least one of the second type of network nodes 802 is shown.

Embodiment 1

In this embodiment, the first type of network node is the SC, and the SC transmits the measurement configuration to each of the subordinate cells to obtain the interference relationship between the cells. The process is as shown in FIG. 9. The embodiment includes the following steps:

901. The SC allocates a time-frequency resource on the idle spectrum of the primary system.

Specifically, an idle spectrum is selected in the idle spectrum of the primary system as a measurement-specific spectrum for interference measurement, and an occupation time of the measurement-dedicated spectrum is configured.

Here, since the frequency range of 470MHz-790MHz can be used to calculate the interference relationship on different spectrums of the entire frequency band based on the interference measurement results on a certain idle spectrum, only one idle spectrum is needed as the measurement-dedicated spectrum.

902. The SC divides the cell in the coverage into a plurality of clusters.

For example, the SC covers eight cells (celll, cell2, cell3, cell4, cell5, cell6, cell7, and cell8), and is divided into two clusters according to distance division. Assume that cell 1 -cell 4 - clusters; cell 5-cell 8 - clusters. The cells in each cluster have non-negligible interference with each other, and the small clusters of different clusters interfere with each other to negligible interference. Each cluster has a measurement-specific spectrum {chl , ch2 } in the frequency domain of 470MHz-790MHz. The bandwidth of the two measurement-dedicated spectrums is {5MHz, 5MHz}.

903. The SC sends a transmission parameter to the second type of network node, that is, the base station (BS 1-BS 8 ) of the eight cells. The transmission parameters are shown in Table 1. Table 1

In an actual application, the sc may also send a measurement command to each base station, where the measurement command is used to command each base station to perform measurement at a time other than the transmission time in the transmission period; For example, BS1 is a measurement period from 20ms to 80ms in the transmission period, and the measurement results are divided into three segments: 20ms~40ms, 40ms~60ms, 60ms~80ms. The statistical results are used as interference values of BS1, BS3, and BS4 for BS1, respectively.

904. Each base station generates a radio signal sequence according to a requirement of a transmission parameter, and transmits the radio signal sequence.

905. Each base station performs measurement, and the measurement result is performed, and the measurement result is shown in Table 2. Wherein, the symbol indicates the actual interference generated by the cell with the ID of m to the cell with the ID n, for example, the actual interference value generated by the cell 2 to the cell 1; and the symbol indicates the total interference of all the measured cells actually received by the cell n; For example, ^J i represents the total interference from the measured cells 2, 3, 4 actually received by the cell 1; ^Δ "represents the interference margin that can be tolerated by the measurement cell η, that is, the interference value that can be tolerated in addition to the actual interference.

Here, taking the case of BS1 as an example, the actual interference received by the measurement is Il=-40dBm, and the total interference value acceptable to BS1 minus the current actual interference is the tolerable interference margin. A ll = -40 dBm is obtained. The situation of other BSs is similar.

Table 2

Embodiment 2

In this embodiment, the first type of network node is the SC, and the SC transmits measurement configuration to each subordinate cell, distinguishes the interference source, and acquires the interference relationship between the cells. The process is shown in FIG. 10, and the following is specifically described:

1001, SC determines a measurement-specific spectrum in the frequency domain range of 470 MHz-790 MHz. 1002. The SC will divide the 8 cells in the coverage into two clusters according to the distance. Cell 1-cell 4 one cluster; cell 5-cell 8 one cluster. Each cluster is incompatible with each other, and cells of different clusters can interfere with each other. Each cluster is in the frequency range of 470MHz-790MHz There is a measurement-specific spectrum {chl , ch2 }. The bandwidth of the two measurement-specific spectrums is {5MHz, 5MHz}.

1003. The SC sends the transmission parameters and the measurement parameters to the second type of network node, that is, the base stations (BS 1-BS 8 ) of the eight cells. The transmission parameters are shown in Table 3, and the measurement parameters are shown in Table 4.

table 3

Table 4: Measurement of the non-periodic offset time-bandwidth rate of the sequence cell area of the frequency measurement of the measured frequency of the measured cell of the measured cell in the corresponding measured cell

Zone ID technology

BS 1 5MH fl=530 Pl=40dB {s2,s3,s4 2,3,4 LTE 80ms 20ms 60ms z MHz m }

BS 2 5MH fl P2=40dB {sl,s3,s4 1,3,4 LTE 80ms 40ms 60ms zm } BS 3 5MH fl P3=40dB {sl,s2,s4 1,2,4 LTE 80ms 60ms 60ms zm }

BS 4 5MH fl P4=40dB {sl,s2,s3 1,2,3 LTE 80ms Oms 60ms z m }

BS 5 5MH fl P5=40dB {s6,s7,s8 6,7,8 LTE 80ms 20ms 60ms z m }

BS 6 5MH fl P6=40dB {s5,s7,s8 5,7,8 LTE 80ms 40ms 60ms z m }

BS 7 5MH fl P7=40dB {s5,s6,s8 5,6,8 LTE 80ms 60ms 60ms z m }

BS 8 5MH fl P8=40dB {s5,s6,s7 5,6,7 LTE 80ms Oms 60ms z m } transmitting; and performing measurements;

1005. Reporting the measurement result, and the measurement result is shown in Table 5. The symbol indicates the actual interference generated by the cell with the ID of m to the cell with the ID n, for example, the actual interference value generated by the cell 2 to the cell 1; the symbol indicates the total interference of the measured cell actually measured by the cell n; for example, ^Ζ ι Representing the total interference from the measured cells 2, 3, 4 actually received by the measurement cell 1;

^Δ " represents the interference margin that the measurement cell n can tolerate, that is, the interference value that can be withstood by the current actual interference. table 5

Embodiment 3

The DB needs to determine the transmission parameter limit of the primary user for the BS 1. The DB obtains the interference relationship with the primary user by transmitting the measurement configuration to the subordinate radio access network (RAN) side cell, thereby determining the transmission of the BS1. Restricted, the interference measurement scenario is shown in Figure 11, where BS1 is the base station pre-configured with TVWS resources, and BS2 is the selected measurement base station. The process is shown in Figure 12, which is described in detail below: 1201. The DB determines a measurement-specific spectrum in the frequency domain range of 470 MHz-790 MHz. 1202: The DB selects a measurement base station BS2 around a reference point relative to the BS1, where the reference point is located at a coverage edge of the primary system, and is a location point where the interference of the BS1 is the strongest interference within the coverage of the primary system.

1203. The DB sends a transmission parameter to the BS1, and the transmission parameters are shown in Table 6.

1204. BS1 generates a wireless signal sequence according to the requirements of the transmission parameters, and transmits.

Table 6

1205, the DB sends measurement parameters to the measurement node BS2, and the measurement parameters are shown in Table 7.

Table 7

1206, BS2 performs measurement;

1207. The measurement result is reported, and the measurement result is shown in Table 8. The symbol indicates the actual interference generated by the cell with the ID of m to the cell with the ID n, for example, the actual interference value generated by the cell 1 to the cell 2; The symbol "represents the total interference of the measured cell that the cell n is actually subjected to; in this embodiment, it indicates that the total interference actually received by the cell BS2 is measured;

^Δ " represents the interference margin that the primary user represented by the measurement cell n can tolerate, that is, the interference value that can be withstood by the current actual ij interference.

Table 8

Embodiment 4

The DB needs to determine the transmission parameter limit of the primary user for the BS 1, and the DB obtains the interference relationship between the base station of the multiple secondary system and the primary user by using the transmission measurement configuration of the subordinate RAN side cell, thereby obtaining the transmission limitation of the BS1, and the interference. The measurement scenario is shown in Figure 13, where BS1, BS2, and BS3 are base stations pre-configured with TVWS resources, and BS4 is the selected measurement base station. The process is shown in Figure 14.

1401. The DB determines a measurement-specific spectrum in the frequency domain of 470 MHz-790 MHz.

1402. The DB selects a measurement base station BS4 around a reference point relative to three interfering base stations, where the reference point is located at a coverage edge of the main system, and the interference points generated by the BS1, BS2, and BS3 are the strongest interference in the coverage of the main system. .

1403. The DB sends the transmission parameters to BS1, BS2, and BS3 respectively. The transmission parameters are shown in Table 9.

1404. The BS1 generates a wireless signal sequence according to the requirements of the transmission parameters, and transmits. Table 9

1405. The DB sends a measurement parameter to the measurement node BS4, and the measurement parameter is shown in Table 10

1406, BS4 performs measurement;

1407. The measurement result is reported, and the measurement result is shown in Table 11.

The symbol indicates the actual interference generated by the cell with ID m to the cell with ID n, for example, ^ represents the actual interference value generated by cell 1 for cell 2.

The symbol indicates that the total interference of the measured cell actually received by the cell n is measured; in this embodiment, / ₄ = / ₄ + / ₄ + represents the total interference actually received by the measurement cell BS4; Table 11

Embodiment 5

The DB needs to determine the transmission parameter limit for the primary user for the BS1, obtains the interference configuration for the primary system by transmitting the transmission configuration to the sub-preconfigured TVWS resource, and transmits the measurement configuration to the plurality of measurement base stations, thereby determining the interference relationship of the primary system. The transmission limitation, the interference measurement scenario is shown in Figure 15, where BS1 is the base station pre-configured with TVWS resources, and BS2, BS3, and BS4 are selected measurement base stations. The process is shown in Figure 16.

1601. The DB determines a measurement-specific spectrum in the frequency domain of 470 MHz-790 MHz. 1602: The DB selects the measurement base station BS2 around the reference point relative to the interfering base station BS1.

BS3, BS4, the reference point is located at the edge of the coverage of the main system, and is the location where the interference of BS1 is the strongest interference within the coverage of the main system.

1603. The DB sends a transmission parameter to the BS1, and the transmission parameters are shown in Table 12.

1604. The BS1 generates a wireless signal sequence according to the requirements of the transmission parameters, and transmits. Table 12

Transmitting corresponding frequency point Transmitting cell transmitting Transmitting transmitting Small transmission time Frequency spectrum Spectrum Transmitting power Cell-free cell area Non-periodic offset Optical bandwidth No small line access Time Line Technology Technology Long code sequence ID

Column

BS 1 5MHz fl=530MHz Pl=40dBm {si } 1 LTE 20ms 0ms 20 ms 1605. The DB sends measurement parameters to the measurement nodes BS2, BS3, and BS4. The measurement parameters are shown in Table 13.

Table 13

1606, BS2, BS3, BS4 perform measurements;

1607. The measurement result is reported, and the measurement result is shown in Table 14. The symbol indicates the actual interference generated by the cell with the ID of m to the cell with the ID n, for example, the actual interference value generated by the cell 1 to the cell 2; the symbol indicates the total interference of the measured cell actually measured by the cell n; for example, this embodiment Among them, there is only one interference source BS 1 , so ^{4 = /} ;

Table 14 Measurement frequency Corresponding measured cell ID of the measured cell. Measurement cell actual spectrum bandwidth Frequency point Small area Actual interference Interference

ID

BS2 5MHz fl {1} Location 2 A 12

BS 3 5MHz fl {1} Location 3 ι\ 13

BS4 5MHz fl {1} Location 4 ι\ 14 1608. After receiving the measurement results sent by the BS2, the BS3, and the BS4, the DB may perform a fusion process of the measurement result, for example, the average value of the actual interference value measured by BS2, BS3, and BS4 is used as a reference of the interference value of the primary system by BS1; Or the lowest value of the actual interference value measured by BS2, BS3, and BS4 is used as a reference for BS 1 to the main system interference value.

Embodiment 6

The DB determines the transmission parameter limit of the primary user for the BS 1, and the SC measures the transmission measurement of the subordinate RAN side cell according to the reference point information provided by the DB, acquires the interference relationship with the primary user, and further determines the transmission limit of the BS 1. The interference measurement scenario is shown in Figure 11, where BS 1 is the base station pre-configured with TVWS resources, and BS2 is the selected measurement base station. The flow is shown in Figure 17, which is described in detail below:

1701: The DB sends the reference point location information relative to the BS 1 to the SC; the reference point is a location point where the interference generated by the BS 1 is the strongest in the coverage of the primary system.

The 1702, SC determines a measurement-specific spectrum in the frequency domain of 470 MHz-790 MHz.

1703. The SC selects the measurement base station BS2 around the reference point of the primary user coverage edge relative to the BS 1.

1704, the SC sends a transmission parameter to the BS 1, and the transmission parameter is shown in Table 15.

1705. The BS 1 generates a wireless signal sequence according to the requirements of the transmission parameters, and transmits.

Table 15

1706. The SC sends measurement parameters to the measurement node BS2, and the measurement parameters are shown in Table 16. Table 16

1707, BS2 performs measurement;

1708, and 8 (upper 3⁄4 measurement result, the measurement result is shown in Table 17. The symbol indicates the actual interference generated by the cell with ID m to the cell with ID n, for example, ^ indicates that cell 1 generates cell 2 The actual interference value; the symbol indicates that the total interference of the measured cell actually received by the cell n is measured; in this embodiment, 7ι = indicates that the total interference actually received by the measurement cell BS2 is detected;

^Δ " represents the interference margin that the primary user represented by the measurement cell n can tolerate, that is, the interference value that can be withstood by the current actual interference.

Table 17

1709, SC to the DB 4 艮 measurement results, for DB as a reference for determining BS1 emission parameters. Industrial applicability

By the method of the invention, the wireless communication system can accurately obtain the secondary system for the primary system The amount of interference, and thus the high-level node can accurately allocate the primary system idle spectrum to the secondary system, as well as the accurate maximum power limit, to achieve primary system protection and efficient use of the primary system idle spectrum.

In addition, by the method of the invention, the wireless communication system can accurately obtain the mutual interference relationship between the secondary system sites, and the high-level node can use the data to achieve effective secondary system inter-communication coexistence, improve the performance of the secondary system, and provide the primary system idle. The spectral efficiency of the spectrum.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included. Within the scope of protection of the present invention.

Claims

Claim

A communication interference measurement method, the method comprising:

Receive measurement results.

The method according to claim 1, wherein the dividing a time-frequency resource comprises: selecting a free spectrum in the idle spectrum of the primary system as a measurement-specific spectrum for interference measurement, and configuring the measurement-dedicated spectrum Occupation time.

3. The method according to claim 2, wherein the size of the measurement-dedicated spectrum is: a system bandwidth of the primary system; or

An integer multiple of the system bandwidth of the primary system; or,

The system bandwidth of the secondary system.

4. The method according to claim 1, wherein the indication information comprises a transmission parameter and/or a measurement parameter.

5. The method according to claim 4, wherein the transmission parameter comprises at least one of: a radio frequency point, a bandwidth, a transmit power of a transmitting cell, a radio signal sequence transmitted by a transmitting cell, and a cell serial number ID of a transmitting cell. The radio access technology of the transmitting cell, the starting time of the transmitting time, the transmitting period, the transmitting duration, and the time offset.

The method according to claim 4, wherein the measurement parameter comprises at least one of: a measurement frequency point, a bandwidth, a radio signal sequence transmitted by the measured cell, a cell ID of the measured cell, and a radio of the measured cell. Access technology, measurement time start, measurement period, measurement duration, time offset.

7. A method for measuring communication interference, the method comprising:

The second type of network node receives the indication information;

Performing a transmitting operation according to the indication information, and/or according to the indication information to the second type of network node The interference is measured and the measurement results are sent.

8. The method according to claim 7, wherein the transmitting operation comprises: generating a wireless signal sequence according to the indication information, and transmitting.

9. The method according to claim 7, wherein the method further comprises: receiving a wireless signal sequence;

10. The method according to claim 7, wherein the measurement result comprises at least one of: a frequency point, a bandwidth, an ID of a measurement cell, an ID of a measured cell, a location of a measurement cell, a location of the measured cell, The actual interference generated by the measured cell, the actual interference received by the measured cell, and the interference margin that the measured cell can tolerate.

11. A method of measuring communication interference, the method comprising:

The second type of network node receives the indication information;

The first type of network node receives the measurement result.

12. A network node, the network node comprising:

The first receiving unit is configured to receive the measurement result.

The network node according to claim 12, wherein the dividing unit is configured to select a free spectrum in the idle spectrum of the primary system as a measurement dedicated frequency for interference measurement. Spectrum, and configure the occupancy time of the measurement-specific spectrum.

14. A network node, the network node comprising:

a second receiving unit, configured to receive indication information;

a first execution unit configured to perform a transmitting operation according to the indication information; and/or,

The second execution unit is configured to measure the interference between the second type of network nodes according to the indication information, and send the measurement result.

The network node according to claim 14, wherein the first execution unit is configured to generate a wireless signal sequence according to the indication information and transmit.

The network node according to claim 14, wherein the second execution unit is configured to receive a wireless signal sequence, and measure a wireless signal transmitted by the second type network node that transmits the wireless signal sequence according to the indication information.

A communication interference measurement system, the system comprising at least one network node according to claim 12 or 13, and at least one network node according to any one of claims 14 to 16.