WO2015070457A1

WO2015070457A1 - Method for improving accuracy of channel measurement, base station and user equipment

Info

Publication number: WO2015070457A1
Application number: PCT/CN2013/087332
Authority: WO
Inventors: 杨晶; 杨敬
Original assignee: 华为技术有限公司
Priority date: 2013-11-18
Filing date: 2013-11-18
Publication date: 2015-05-21
Also published as: CN103797837A; CN103797837B

Abstract

Provided are a method for improving accuracy of channel measurement, a base station and a user equipment. The method is used for channel measurement of paired user equipment (UE), wherein the paired UE comprises a first UE and a second UE. The method comprises: generating, by a base station, configuration information, wherein the configuration information indicates time frequency resources where the first UE performs interference measurement (101); sending, by the base station, the above-generated configuration information to the first UE (102); and sending, by the base station, data to the second UE over the time frequency resources indicated by the configuration information (103). By means of the present invention, the problem of channel measurement being inaccurate which exists in the prior art can be solved.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a method, a base station, and a user equipment for improving channel measurement accuracy. Background technique

As the cell traffic increases, the multi-sector networking mode becomes a scheme for improving cell coverage and capacity without increasing the site address, for example, in a Long Term Evolution (LTE) communication system. The three-sector networking mode. However, as the number of sectors increases, the user equipment (User Equipment, UE) needs to frequently switch between cells, thereby affecting the user experience, causing dropped calls, decreased transmission rate, etc. In order to solve this problem, a virtual sector is introduced. concept.

Since the Active Antenna System (AAS) can form some differently directed beams, multiple virtual sectors can be divided according to different beams in the same physical sector, and each beam covers one virtual sector. The UEs belonging to different virtual sectors can multiplex the same time-frequency resources. The UEs at the virtual sector boundary can be jointly sent by multiple beams. The effective multiplexing resources can improve the system capacity and reduce the sector boundary users. The interference also avoids frequent switching problems caused by sectorization. A UE that multiplexes the same block of time-frequency resources for data transmission is called a paired UE, and the paired UEs use the same block of time-frequency resources for data transmission during data transmission, which may cause interference with each other, but the current channel measurement method does not reflect The effect of interference between paired UEs on the measurement results in inaccurate channel measurements. Summary of the invention

Embodiments of the present invention provide a method, a base station, and a user equipment for improving channel measurement accuracy, It is used to solve the problem of inaccurate channel measurement existing in the prior art.

In order to achieve the above object, embodiments of the present invention use the following technical solutions:

In a first aspect, an embodiment of the present invention provides a method for improving channel measurement accuracy, which is used for channel measurement of a user equipment UE. The paired UE includes a first UE and a second UE, and includes: a base station generates configuration information, where The configuration information indicates a time-frequency resource where the first UE performs interference measurement;

Sending the configuration information to the first UE;

And transmitting data to the second UE on the time-frequency resource indicated by the configuration information. With reference to the first aspect, in a first possible implementation manner of the first aspect, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is occupied by a pilot that is sent to the first UE. The first time-frequency resource, and after the base station sends the configuration information to the first UE, the method further includes:

Transmitting a pilot to the first terminal on the first time-frequency resource.

With reference to the first aspect, in a second possible implementation manner of the first aspect, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is the second time-frequency resource where the interference management resource IMR is located, and The configuration information further includes a first time-frequency resource that is used by the pilot that is sent to the first UE, and after the base station sends the configuration information to the first UE, the method further includes:

And transmitting, on the first time-frequency resource, a pilot to the first UE.

In conjunction with the second possible implementation of the first aspect, in a third possible implementation manner of the first aspect, the first time-frequency resource is not used to send data of the second UE. With reference to the first aspect, or any one of the first to the third possible implementation manners of the first aspect, in the fourth possible implementation manner of the foregoing aspect, the generating, by the base station, the configuration information includes:

Determining, by the base station, a location of the first UE, where the location of the first UE includes a location of a virtual sector or a boundary of a partial virtual sector of all virtual sectors corresponding to the base station; And generating the configuration information according to the location of the first UE.

With reference to the first aspect, or any one of the first possible implementation to the fourth possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, the pilot It is a channel state information reference signal CSI-RS.

In a second aspect, a method for improving channel measurement accuracy includes: receiving, by a first user equipment, UE, configuration information that is sent by a base station, where the configuration information indicates that the first UE performs time-frequency resources in which interference measurement is performed, and the time is The frequency resource is further configured to send data of the second UE, where the first UE and the second UE form a paired UE;

The first UE performs interference measurement on a time-frequency resource indicated by the configuration information.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is occupied by a pilot that is sent to the first UE. The first time-frequency resource, and the first UE performs interference measurement on the time-frequency resource indicated by the configuration information, including:

The first UE performs channel measurement on the pilot transmitted by the base station on the first time-frequency resource, and obtains a channel measurement result including the second UE interference.

With reference to the second aspect, in a second possible implementation manner of the second aspect, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is occupied by a pilot that is sent to the first UE. The first time-frequency resource, and the first UE performs interference measurement on the time-frequency resource indicated by the configuration information, including:

With the second possible implementation of the second aspect, in a third possible implementation manner of the second aspect, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is the interference management resource IMR. The second time-frequency resource, and the configuration information further indicates a first time-frequency resource that is used by the pilot that is sent to the first UE, and the method further includes: The first UE performs signal measurement on the pilot sent by the base station on the first time-frequency resource;

Based on the results of the interference measurement and signal measurement, a channel measurement result including the second UE interference is obtained. In a third aspect, a base station is configured to improve accuracy of channel measurement of a paired user equipment UE, where the paired UE includes a first UE and a second UE, and includes: a generating unit, configured to generate configuration information, where the configuration The information indicating the time-frequency resource where the first UE performs interference measurement, and the sending unit, configured to send information to the paired UE;

a control unit, configured to control, by the sending unit, the configuration information generated by the generating unit to the first UE, and control the sending unit to send to the second UE on a time-frequency resource indicated by the configuration information send data.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is occupied by a pilot that is sent to the first UE. a first time-frequency resource, and the control unit is further configured to: after the sending unit sends configuration information to the first UE, control, by the sending unit, on the first time-frequency resource, to the first The UE sends a pilot.

With reference to the third aspect, in a second possible implementation manner of the third aspect, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is the second time-frequency resource where the interference management resource IMR is located, and The configuration information further indicates a first time-frequency resource occupied by a pilot that is sent to the first UE, and the control unit is further configured to: after the sending unit sends configuration information to the first UE, The transmitting unit sends a pilot to the first UE on the first time-frequency resource.

In conjunction with the second possible implementation of the third aspect, in a third possible implementation manner of the third aspect, the control unit is further configured to control, by the first time-frequency resource, data that is not used to send the second UE. .

Combining the third aspect or the first possible implementation of the third aspect to the third possible implementation In a fourth implementation manner of the third aspect, the base station further includes: a location determining unit, configured to determine a location of the first UE, a location of the first UE Included within the interior of a virtual sector or at a junction of a portion of all virtual sectors corresponding to the base station;

The generating unit is configured to generate the configuration information according to the location of the first UE. With reference to the third aspect, or the first possible implementation manner of the third aspect, to any one of the fourth possible implementation manners, in a fifth possible implementation manner of the third aspect, the pilot is The channel state information reference signal CSI-RS. In a fourth aspect, a user equipment is provided, including: a receiving unit, configured to receive configuration information sent by a base station, where the configuration information indicates a time-frequency resource where the user equipment of the first user equipment UE performs interference measurement, and The time-frequency resource is further configured to send data of the second UE, where the first UE and the second UE form a paired UE;

And an interference measurement unit, configured to perform interference measurement on the time-frequency resource indicated by the configuration information. With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is occupied by a pilot that is sent to the first UE. a first time-frequency resource, and the interference measurement unit is configured to: perform channel measurement on the pilot sent by the base station on the first time-frequency resource, to obtain a channel measurement result including the second UE interference. . With reference to the fourth aspect, in a second possible implementation manner of the fourth aspect, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is the second time-frequency resource where the interference management resource IMR is located, and The configuration information further indicates a first time-frequency resource that is used by the pilot that is sent to the first UE, and the base station further includes: a signal measurement unit, configured to perform on the first time-frequency resource Deriving a pilot transmitted by the base station to perform signal measurement;

a measurement result acquisition unit, configured to perform interference measurement and the signal according to the interference measurement unit As a result of the signal measurement of the measurement unit, a channel measurement result including the second UE interference is obtained.

A method for improving channel measurement accuracy, a base station, and a user equipment are provided for channel measurement of a user equipment UE, where the paired UE includes a first UE and a second UE, and the base station generates configuration information and The first UE sends the configuration information, where the configuration information indicates the time-frequency resource where the first UE performs the interference measurement, and the base station sends the data to the second UE on the time-frequency resource indicated by the configuration information, where the first UE is Interference measurement is performed on the time-frequency resource indicated by the configuration information. Compared with the prior art, the interference measurement result of the first UE is more accurate because the interference of the first UE with the same time-frequency resource is multiplexed by the second UE and the first UE in the data transmission process. . 1 is a flowchart of a method for improving channel measurement accuracy according to an embodiment of the present invention; FIG. 2 is a flowchart of a method for improving channel measurement accuracy according to another embodiment of the present invention; A signaling diagram of a method for improving channel measurement accuracy according to another embodiment of the present invention; FIG. 4 is a signaling diagram of a method for improving channel measurement accuracy according to another embodiment of the present invention; FIG. A schematic diagram 1 of a base station provided;

FIG. 6 is a schematic structural diagram 2 of a base station according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram 1 of a user equipment according to an embodiment of the present disclosure;

FIG. 8 is a second schematic diagram of a result of a user equipment according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a base station according to another embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a user equipment according to another embodiment of the present invention. The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and Not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

First, the concept of pilots to be used in the following embodiments will be described.

Time-frequency resources, also known as resource elements (Resource Element, RE). In an LTE communication system, one subcarrier on the frequency domain and one symbol (symbol) on the time domain form an RE.

The pilot, which may also be referred to as a pilot signal or a reference signal (Reference Signal, RS), is provided by the transmitting end (base station) to the receiving end (UE) for channel measurement (or referred to as channel estimation). signal. Currently, commonly used pilots mainly include the following three types:

Cell-specific reference signal (CRS): Also known as a common pilot, it is currently broadcast to all users in the cell. CRS is very versatile, including channel estimation demodulation for control channels, measurement and demodulation in certain transmission modes (eg TM4);

UE-specific RS (UE-specific RS): For data demodulation in certain transmission modes (eg TM8, TM9);

Channel State Information Reference Signal (CSI-RS): Used for channel state information (CSI) measurements, referred to as channel measurements.

Currently, in virtual sectorization schemes, channel measurements are based on CRS. The CRS can only be transmitted by broadcast (that is, all beams are transmitted together), and no resource multiplexing is performed, and the transmitted data is transmitted by using a beam. In this case, when the UEs in different virtual sectors multiplex the same time-frequency resources, the measurement results are not accurate because the interference between the paired UEs (that is, the UEs that multiplex the same time-frequency resources) is not considered during the measurement. The signal to interference plus noise ratio (SINR) level and the beam characteristics at the time of receiving the reaction data seriously affect the performance of the virtual sectorization.

For this reason, in the following embodiments, when the base station configures the time-frequency resources of the pilots for the paired UEs, the time-frequency resources between them are coordinated, so that the time-frequency resources occupied by the pilots are staggered, and the time-frequency corresponding to the interference is measured. At the location of the resource, data is transmitted, thereby introducing interference between the paired UEs during measurement, which improves the accuracy of channel measurement.

It should be noted that the paired UE may also include two or more UEs, and the implementation is similar, that is, Any one of the paired UEs can be used as a measurement UE. The base station transmits data to other UEs at the location of the time-frequency resource that measures the measurement interference of the UE, thereby introducing interference between the paired UEs during measurement, and improving channel measurement. The accuracy. For the sake of understanding, in the following embodiments, the paired UE includes the first UE and the second UE as an example, where the first UE and the second UE are both used as measurement UEs, where the first UE is used. For the measurement of the UE as an example, the description is made. Of course, the second UE can also be used as the measurement UE. The implementation of the scheme is similar to that of the first UE as the measurement UE, and is merely a simple reconciliation, and will not be described in detail herein.

Referring to FIG. 1, an embodiment of the present invention provides a method for improving channel measurement accuracy, which is related to a base station side, and the method includes:

101. The base station generates configuration information, where the configuration information indicates a time-frequency resource where the first UE performs interference measurement.

102. The base station sends the configuration information generated by the foregoing to the first UE.

103. The base station sends data to the second UE on the time-frequency resource indicated by the configuration information.

The base station sends data to the second UE on the time-frequency resource where the interference measurement is performed, where the first UE performs the channel measurement, and the second UE pair can be measured on the time-frequency resource where the interference measurement is performed. Interference from the first UE.

In addition, as shown in FIG. 2, the embodiment of the present invention further provides a method for improving channel measurement accuracy, involving a UE-side, including:

201. The first UE receives the configuration information sent by the base station, where the configuration information indicates the time-frequency resource where the first UE performs the interference measurement. It should be noted that the time-frequency resource where the first UE performs the interference measurement is also used to carry the data sent to the second UE.

202. The first UE performs interference measurement on a time-frequency resource indicated by the configuration information. The base station is still in the second time on the time-frequency resource where the interference measurement is performed by the configuration information.

The UE sends the data, so that the first UE can measure the interference of the second UE to the first UE on the time-frequency resource where the interference measurement is performed when the channel measurement is performed. A method for improving channel measurement accuracy is provided for the channel measurement of a paired UE, where the paired UE includes a first UE and a second UE, and the base station sends configuration information to the first UE, where the configuration information is Instructing the first UE to perform time-frequency resources in which the interference measurement is performed; the base station sends data to the second UE on the time-frequency resource indicated by the configuration information, and the first UE performs interference measurement on the time-frequency resource indicated by the configuration information. . Compared with the prior art, the interference measurement result of the first UE is more accurate because the interference of the first UE with the same time-frequency resource is multiplexed between the second UE and the first UE in the data transmission process. .

The above method for improving channel measurement accuracy will be described in detail below by taking a specific embodiment as an example. On the one hand, as shown in FIG. 3, an embodiment of the present invention provides a method for improving channel measurement accuracy, including:

301. The base station sends configuration information to the first UE, where the configuration information indicates a first time-frequency resource occupied by a pilot that is sent to the first UE.

302. Send, on the first time-frequency resource, a pilot to the first UE, and send data to the second UE on the first time-frequency resource.

The first UE and the second UE multiplex the same time-frequency resource, that is, the first UE and the second UE are paired UEs.

303. The first UE performs channel measurement on the pilot transmitted by the base station on the first time-frequency resource, and obtains a channel measurement result that includes interference of the second UE.

304. The first UE sends the obtained channel measurement result to the base station. The pilot described in the embodiment shown in FIG. 3 may specifically be a CSI-RS. A method for improving channel measurement accuracy according to an embodiment of the present invention is used for channel measurement of a paired UE, where the base station sends configuration information to the first UE, where the configuration information indicates the pilot that is sent to the first UE. a first time-frequency resource, and transmitting a pilot to the first UE on the first time-frequency resource, and transmitting data to the second UE; the first UE performs channel measurement on the pilot on the first time-frequency resource, because the base station passes the The first time frequency resource sends a pilot to the first UE and sends data to the second UE, and the first UE sends a message. The channel measurement can obtain a channel measurement result including the second UE interference. Compared with the prior art, the interference measurement result of the first UE is more accurate because the interference of the first UE with the same time-frequency resource is multiplexed between the second UE and the first UE in the data transmission process. .

It should be noted that, since the first UE and the second UE are paired UEs, they are located at different locations, for example, in different virtual sectors, or one is located at a boundary of multiple virtual sectors, and the other is located in a virtual sector. Within; or at the junction of different virtual sectors. Therefore, on the first time-frequency resource, the base station sends a pilot to the first UE and uses a different beam for transmitting data to the second UE. For example, the base station sends a pilot to the first UE by using the first beam on the first time-frequency resource; and transmitting data to the second UE by using the second beam on the first time-frequency resource.

The first beam may be one or more. For example, if the first UE is at the intersection of multiple virtual sectors, the pilots are transmitted by using multiple beams corresponding to the virtual sectors; if the first UE is located inside a virtual sector, the virtual sector is utilized. The beam transmits the pilot.

The second beam may be one or multiple. For example, if the second UE is at the intersection of multiple virtual sectors, the data is sent to the second UE by using multiple beams corresponding to the virtual sectors; if the second UE is located inside a virtual sector, the virtual is utilized. The beam corresponding to the sector transmits data to the second UE. Certainly, the second UE may be multiple, and belong to different virtual sectors, and jointly cause interference to the first UE. Further, when generating the configuration information, the base station may consider the location of the first UE to generate different configuration information for the UEs in different locations, so the process of generating the configuration information by the base station includes:

51. The base station determines a location of the first UE. The location of the first UE may include a plurality of possible conditions, such as being within a virtual sector, or at the junction of a portion of all virtual sectors in the virtual sector corresponding to the base station, and the like.

52. Determine configuration information according to the location of the first UE.

The determining, by the base station, the location of the first UE may be implemented by receiving an uplink response received power of the first UE. Specifically, the process of determining the location of the first UE is described in detail by taking three beams as an example: The base station has three beams in one physical sector, and each beam corresponds to one virtual sector. The three beams are sequentially numbered as a beam Α, a beam Β, and a beam C. The uplink response power of the first UE on the beam 统计 in the statistical time period 为 is A1, and the first UE is uplinked on the beam B in the statistical time period K. The response received power is B1, and the uplink response power of the first UE on the beam C in the statistical time period K is C1, and the preset threshold is set to Th1.

Case 1: If Al-Bl>Thl, and Bl-Cl>Thl, the base station determines that the first UE is located in the coverage area of the beam A; if Al-B Thl, and CI-B>Thl, the first UE is located The coverage area of the beam C; if Al-BKThl, and B1-Cl>Thl, the first UE bit is described in the coverage area of the beam B.

Case 2: If abs (Al-Bl) ≤ Thl and abs (Bl-Cl) > Thl, the base station determines that the first UE is located in a common coverage area of the beam A and the beam B; if abs ( Bl- Cl )< Thl and abs (Al−Bl )>Thl , the first UE is located in a common coverage area of the beam B and the beam C; if abs (Al—Cl)≤Thl and abs (Bl-Cl) >Thl, the first UE is located in a common coverage area of the beam A and the beam C.

Case 3: If ^8(8-81)≤1111, and abs(Bl-Cl)≤Thl, and abs(Al-Cl)<Thl, the base station determines that the first UE is located in beam VIII, beam B, beam C Common junction area. The uplink response received power is a channel sounding reference signal power sent by the first UE received by the base station.

Case 2 and Case 3 are both common boundary areas for multiple beams, except that the common junction area of several beams in the second case is not the common junction area of all beams; and the third case is for all beams. Common junction area.

It should be noted that when the first UE is in the common border zone of all the beams described in Case 3 (ie, the common boundary of all virtual sectors), the CRS of the prior art may be used for channel measurement. The reason is that the CRS is transmitted by all beams together. According to the foregoing case 1 to case 3, there may be multiple cases where the first UE is located. The pilot transmitted by the base station to the first UE is also different according to the location of the location. Assuming that the pilot is specifically CSI-RS, there are three virtual sectors, namely virtual sector 1, virtual sector 2 and virtual sector 3. Then there are at most seven possibilities for the location where the first UE is located: inside virtual sector 1, inside virtual sector 2, inside virtual sector 3, at the junction of virtual sector 1 and virtual sector 2, virtual sector 1 and The junction of virtual sector 3, the junction of virtual sector 2 and virtual sector 3, the common junction of virtual sectors 1, 2 and 3.

As described above, when the first UE is in the common boundary area of all the beams (ie, the common boundary of all the virtual sectors), the CRS of the prior art can be used for channel measurement, so the following six location cases are performed. Description.

If the first UE is in the virtual sector 1, the base station sends the CSI-RS of the configuration 1 to the first UE; if the first UE is in the virtual sector 2, the base station is to the first UE. Transmitting the CSI-RS of configuration 2; if the first UE is in the virtual sector 3, the base station sends the CSI-RS of configuration 3 to the first UE. If the first UE is at the boundary between the virtual sector 1 and the virtual sector 2, the base station sends the CSI-RS of the configuration 4 to the first UE, where the CSI-RS of the configuration 4 is the beam corresponding to the virtual sector 1 The beam corresponding to the virtual sector 2 is jointly sent to the first UE; if the first UE is at the boundary of the virtual sector 2 and the virtual sector 3, the base station sends the CSI-RS of the configuration 5 to the first UE, first Sending by the UE; if the first UE is at the boundary of the virtual sector 1 and the virtual sector 3, the base station sends the CSI-RS of the configuration 6 to the first UE, where the CSI-RS of the configuration 6 is corresponding to the virtual sector 1 The beam corresponding to the virtual sector 3 is transmitted to the first UE in common.

In summary, the base station indicates different configured CSI-RSs to the first UE according to the location of the first UE, and ensures that different configured CSI-RSs occupy different time-frequency resources. On the other hand, as shown in FIG. 4, the embodiment of the present invention further provides another method for improving channel measurement accuracy, including:

401. The base station sends configuration information to the first UE, where the configuration information indicates that the first time-frequency resource occupied by the pilot sent to the first UE and the second time-frequency resource where the IMR is located. Different from the embodiment shown in FIG. 3, two time-frequency resources are indicated in the configuration information sent by the base station in step 401: the first time-frequency resource occupied by the pilot transmitted to the first UE, and the interference management The second time-frequency resource where the resource (IMR) is located.

The pilot described in the embodiment shown in FIG. 4 may specifically be a CSI-RS. Before transmitting the configuration information to the first UE, the base station determines the location of the first UE, and determines the configuration information according to the location of the first UE. For a detailed description of the location of the first UE by the base station, refer to the descriptions of the first case, the case 2 and the case 3 in the foregoing embodiments of the present invention, and details are not described herein again. The base station is different from the first UE configured and transmitted in different locations. For details, refer to the foregoing description of the embodiments of the present invention.

402. The base station sends a pilot to the first UE on the first time-frequency resource. It should be noted that the base station does not send data to the second UE on the first time-frequency resource. The specific implementation manner may be that the base station sends a zero transmission power CSI-RS to the second UE on the first time-frequency resource. Before transmitting the zero transmission power CSI-RS, the base station indicates, in the configuration information sent to the second UE, that the location of the first time-frequency resource is zero transmission power CSI-RS. In this case, the base station sends a pilot to the first UE on the first time-frequency resource, and does not send data to the second UE on the first time-frequency resource, and the first UE performs signal measurement according to the received pilot. For example, the first UE and the second UE are paired users. The first UE is located in virtual sector 1 and the second UE is located in virtual sector 2. Virtual sector 1 corresponds to beam 1 of the base station, and virtual sector 2 corresponds to beam 2 of the base station. The base station transmits the CSI-RS to the first UE through the beam 1, but on the same time-frequency resource, the base station does not send data to the second UE of the virtual sector 2 through the beam 2, that is, the virtual sector 2 is silent (mute).

403. The first UE performs signal measurement on the pilot sent by the base station on the first time-frequency resource.

404. The base station sends data to the second UE on the second time-frequency resource.

405. The first UE performs interference measurement on the second time-frequency resource.

The base station sends data to the second UE on the second time-frequency resource, and the first UE receives the configuration information, and the After the time-frequency resource of the IMR is located, the interference measurement is performed on the time-frequency resource, and the interference measurement can reflect the interference of the second UE that multiplexes the second time-frequency resource with the first UE.

406. Obtain a channel measurement result including the second UE interference according to the result of the interference measurement and the signal measurement.

407. The first UE sends the obtained channel measurement result to the base station. A method for improving channel measurement accuracy according to an embodiment of the present invention is used for channel measurement of a paired UE, where the base station sends configuration information to the first UE, where the configuration information indicates the pilot that is sent to the first UE. a first time-frequency resource and a second time-frequency resource in which the IMR is located, and the base station sends a pilot to the first UE on the first time-frequency resource, and does not send data to the second UE on the first time-frequency resource, the first UE The pilot is channel measured on the first time-frequency resource. The base station also sends data to the second UE on the second time-frequency resource, and the first UE performs interference measurement on the second time-frequency resource. Finally, the first UE obtains a channel measurement result including the second UE interference according to the result of the interference measurement and the signal measurement, and feeds back to the base station. Since the base station sends data to the second UE through the second time-frequency resource, the first UE performs the interference measurement to obtain the interference situation of the second UE. Compared with the prior art, the interference measurement result of the first UE is more accurate because the interference of the first UE with the same time-frequency resource is multiplexed between the second UE and the first UE in the data transmission process. . Corresponding to the foregoing method, as shown in FIG. 5, an embodiment of the present invention further provides a base station, configured to perform channel measurement on a paired UE, where the paired UE includes a first UE and a second UE, where the base station includes: generating a unit 51, a control unit 52, and a sending unit 53, wherein the generating unit 51 is configured to generate configuration information, where the configuration information indicates a time-frequency resource where the first UE performs interference measurement, and the sending unit 53 is configured to send to the paired UE. Information

The control unit 52 is configured to trigger the sending unit 53 to send the configuration information generated by the generating unit 51 to the first UE, and control the sending unit 53 to use the time-frequency resource indicated by the configuration information according to the configuration information generated by the generating unit 51. Sending data to the second UE. In a specific implementation manner of the embodiment of the present invention, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is the first time-frequency resource occupied by the pilot that is sent to the first UE. In this case, the control unit 52 is further configured to control, after the sending unit 53 sends the configuration information to the first UE, the sending unit 53 to the first time-frequency resource, to the first A UE transmits a pilot.

In another specific implementation manner of the embodiment of the present invention, the time-frequency resource where the first UE performs the interference measurement is the second time-frequency resource where the IMR is located, and the configuration information is further sent to the The first time-frequency resource occupied by the pilot of the first UE. In this case, the control unit 52 is further configured to control, after the sending unit 53 sends the configuration information to the first UE, the sending unit 53 to the first time-frequency resource, to the first The UE transmits a pilot. It should be noted that the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is the second time-frequency resource where the IMR is located, and the configuration information further indicates the pilot that is sent to the first UE. In the case of the first time-frequency resource, the control unit 52 is further configured to control that the first time-frequency resource is not used to send data of the second UE.

Further, as shown in FIG. 6, the base station further includes: a location determining unit 54 configured to determine a location of the first UE, where the location of the first UE includes an internal of a virtual sector or the base station corresponds to The intersection of some of the virtual sectors in all virtual sectors.

The generating unit 51 is further configured to generate the configuration information according to the location of the first UE determined by the location determining unit 54.

The pilot mentioned above may specifically be a CSI-RS.

It should be noted that the sending unit in the embodiment of the present invention may be a transmitter of the base station; the generating unit may be a separately set processor, or may be integrated in a processor of the base station, and may also be in program code. The form is stored in the memory of the base station, and is called by one of the base stations and performs the functions of the above generating unit. The implementation of the control unit and the location determining unit is the same as the generating unit, and may be integrated with the generating unit or independently. The processor described here can be a Central Processing Unit (CPU) or a specific integration. An Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention.

On the other hand, the embodiment of the present invention further provides a user equipment, as shown in FIG. 7, including: a receiving unit 71, configured to receive configuration information sent by a base station, where the configuration information indicates that the user equipment that is the first UE performs interference. The time-frequency resource is measured, and the time-frequency resource is further used to send data of the second UE; wherein the first UE and the second UE form a paired UE.

The interference measurement unit 72 is configured to perform interference measurement on the time-frequency resource indicated by the configuration information. In an implementation manner of the embodiment of the present invention, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is the first time-frequency resource occupied by the pilot that is sent to the first UE, and the interference The measuring unit 72 is specifically configured to: perform channel measurement on the pilot sent by the base station on the first time-frequency resource, to obtain a channel measurement result including the second UE interference.

In another implementation manner of the embodiment of the present invention, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is the second time-frequency resource where the interference management resource IMR is located, and the configuration information further indicates The first time-frequency resource occupied by the pilot that is sent to the first UE. In this case, as shown in FIG. 8, the user equipment further includes: a signal measuring unit 73, configured to perform signal measurement on the pilot sent by the base station on the first time-frequency resource.

The measurement result obtaining unit 74 is configured to obtain a channel measurement result including the second UE interference according to the interference measurement of the interference measurement unit 72 and the signal measurement result of the signal measurement unit 73.

It should be noted that, in the embodiment of the present invention, the receiving unit of the user equipment may be a receiver of the user equipment; the interference measuring unit may be a separately set processor, or may be integrated into one processor of the user equipment, and It can also be stored in the memory of the user equipment in the form of program code, and is called by one of the processors of the user equipment and performs the functions of the above interference measuring unit. The implementation of the signal measurement unit and the measurement result acquisition unit is the same as that of the interference measurement unit, and can be integrated with the interference measurement unit (for example, the signal measurement unit and the interference measurement unit base set) Together, it can also be implemented independently. The processor described herein can be a CPU, or an ASIC, or one or more integrated circuits configured to implement embodiments of the present invention. The base station and the user equipment provided by the embodiment of the present invention are configured to implement channel measurement of the paired UE, and the base station sends configuration information to the first UE, where the configuration information indicates the first time frequency occupied by the pilot that is sent to the first UE. Generating a pilot to the first UE on the first time-frequency resource, and transmitting data to the second UE; the first UE performs channel measurement on the pilot on the first time-frequency resource, because the base station passes the first time-frequency resource Both the pilot is sent to the first UE and the data is sent to the second UE. The channel measurement by the first UE can obtain the channel measurement result including the second UE interference. Compared with the prior art, the interference measurement result of the first UE is more accurate because the interference of the first UE with the same time-frequency resource is multiplexed between the second UE and the first UE in the data transmission process. .

In addition, an embodiment of the present invention further provides a base station. As shown in FIG. 9, the base station includes: a transmitter 91 and a processor 92. The processor 92 is configured to generate configuration information, where the configuration information indicates a time-frequency resource where the first UE performs interference measurement. Transmitter 91 is operative to transmit information to the paired UE. The processor 92 is further configured to control the transmitter 91 to send configuration information generated by the processor 92 to the first UE, and control the transmitter 91 to send data to the second UE on the time-frequency resource indicated by the configuration information.

In one case, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is the first time-frequency resource occupied by the pilot that is sent to the first UE, and the processor 92 further uses After the transmitter 91 sends the configuration information to the first UE, the control transmitter 91 sends a pilot to the first terminal on the first time-frequency resource.

In another case, the time-frequency resource where the first UE performs the interference measurement indicated by the configuration information is the second time-frequency resource where the IMR is located, and the configuration information further indicates the pilot that is sent to the first UE. The first time-frequency resource. The processor 92 is further configured to: after the transmitter 91 sends the configuration information to the first UE, control the transmitter 91 to send a pilot to the first UE on the first time-frequency resource. And the processor 92 is further configured to control that the first time-frequency resource is not used for sending Two UE data. The processor 92 is further configured to determine a location of the first UE, where the location of the first UE includes an internal of a virtual sector or a boundary of a partial virtual sector of all virtual sectors corresponding to the base station.

The processor 92 is further configured to generate the configuration information according to the location of the first UE.

The pilot in the embodiment of the present invention may be a CSI-RS.

In addition, the base station also includes components such as a receiver, a memory, and a bus, which are not shown in FIG. The receiver and transmitter can form a transceiver. The memory can be used to store executable program code, including computer operating instructions. The bus can be connected to components such as receivers, transmitters, and memories.

In addition, a user equipment is provided, as shown in FIG. 10, including: a receiver 1001, and a processor 1002. The receiver 1001 is configured to receive configuration information sent by the base station, where the configuration information indicates a time-frequency resource where the user equipment of the first UE performs interference measurement, and the time-frequency resource is further used to send data of the second UE. The first UE and the second UE form a paired UE.

The processor 1002 is configured to perform interference measurement on the time-frequency resource indicated by the configuration information. The time-frequency resource in which the first UE performs the interference measurement indicated by the configuration information is the first time-frequency resource occupied by the pilot that is sent to the first UE, and the processor 1002 is specifically configured to: Performing channel measurement on the pilot transmitted by the base station on the first time-frequency resource, and obtaining a channel measurement result including the second UE interference.

The time-frequency resource where the first UE performs the interference measurement is the second time-frequency resource where the IMR is located, and the configuration information further indicates the first time occupied by the pilot that is sent to the first UE. a frequency resource, and the processor 1002 is further configured to perform signal measurement on the pilot sent by the base station on the first time-frequency resource, and obtain, according to a result of the signal measurement of the interference measurement, the second Channel measurement results of UE interference.

The base station and the user equipment provided by the embodiments of the present invention are used to implement channel measurement of the paired UE. The station sends the configuration information to the user equipment that is the first UE, in the configuration information, the first time-frequency resource that is used by the pilot that is sent to the first UE, and sends the first time-frequency resource to the first UE on the first time-frequency resource. Frequency, transmitting data to the second UE; the first UE performs channel measurement on the pilot on the first video resource, and the base station sends a pilot to the first UE and sends data to the second UE by using the first time-frequency resource, The first UE performs channel measurement to obtain a channel measurement result including the second UE interference. Compared with the prior art, the interference measurement result of the first UE is more accurate because the interference of the first UE with the same time-frequency resource is multiplexed between the second UE and the first UE in the data transmission process. .

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

claims

1. A method for improving channel measurement accuracy, used for channel measurement of paired user equipment UE, where the paired UE includes a first UE and a second UE, characterized by including: a base station generating configuration information, the configuration information Indicate the time-frequency resource where the first UE performs interference measurement;

Send the configuration information to the first UE;

Send data to the second UE on the time-frequency resource indicated by the configuration information.

2. The method according to claim 1, characterized in that, the time-frequency resource where the first UE performs interference measurement indicated by the configuration information is the first time-frequency occupied by the pilot sent to the first UE. resources, and after the base station sends the configuration information to the first UE, the method further includes: sending a pilot to the first terminal on the first time-frequency resource.

3. The method according to claim 1, wherein the time-frequency resource where the first UE performs interference measurement indicated by the configuration information is the second time-frequency resource where the interference management resource IMR is located, and the configuration information It also indicates the first time-frequency resource occupied by the pilot sent to the first UE, and after the base station sends the configuration information to the first UE, the method further includes: on the first time-frequency resource. , sending a pilot to the first UE.

4. The method according to claim 3, characterized in that the first time-frequency resource is not used to send data of the second UE.

5. The method according to any one of claims 1 to 4, characterized in that the base station generates configuration information, including:

The base station determines the location of the first UE, and the location of the first UE includes the interior of a virtual sector or the junction of some virtual sectors among all virtual sectors corresponding to the base station;

The configuration information is generated according to the location of the first UE.

6. The method according to any one of claims 1 to 5, characterized in that the pilot is a channel Status information reference signal CSI-RS.

7. A method for improving channel measurement accuracy, characterized by comprising: a first user equipment UE receiving configuration information sent by a base station, the configuration information indicating the time-frequency resource where the first UE performs interference measurement, and The time-frequency resource is also used to send data of the second UE; wherein the first UE and the second UE form a paired UE; the first UE performs interference measurement on the time-frequency resource indicated by the configuration information .

8. The method according to claim 7, characterized in that, the time-frequency resource where the first UE performs interference measurement indicated by the configuration information is the first time-frequency occupied by the pilot sent to the first UE. resources, and, the first UE performs interference measurement on the time-frequency resources indicated by the configuration information, including:

The first UE performs channel measurement on the pilot sent by the base station on the first time-frequency resource to obtain a channel measurement result including interference from the second UE.

9. The method according to claim 7, wherein the time-frequency resource where the first UE performs interference measurement indicated by the configuration information is the second time-frequency resource where the interference management resource IMR is located, and the configuration information It also indicates the first time-frequency resource occupied by the pilot sent to the first UE, and the method further includes: the first UE responds to the pilot sent by the base station on the first time-frequency resource. Perform signal measurement at a frequency; obtain a channel measurement result including interference from the second UE based on the results of the interference measurement and signal measurement.

10. A base station used to improve the accuracy of channel measurement of paired user equipment UE. The paired UE includes a first UE and a second UE, characterized in that it includes: a generating unit configured to generate configuration information, the The configuration information indicates the time-frequency resource where the first UE performs interference measurement; a sending unit, configured to send information to the paired UE; A control unit configured to control the sending unit to send the configuration information generated by the generating unit to the first UE, and control the sending unit to send the configuration information to the second UE on the time-frequency resource indicated by the configuration information. send data.

11. The method according to claim 10, characterized in that, the time-frequency resource where the first UE performs interference measurement indicated by the configuration information is the first time-frequency occupied by the pilot sent to the first UE. resources, and the control unit is also configured to control the sending unit to send a pilot to the first UE on the first time-frequency resource after the sending unit sends the configuration information to the first UE. .

12. The base station according to claim 10, wherein the time-frequency resource where the first UE performs interference measurement indicated by the configuration information is the second time-frequency resource where the interference management resource IMR is located, and the configuration information It also indicates the first time-frequency resource occupied by the pilot sent to the first UE, and the control unit is also configured to control the sending unit after the sending unit sends the configuration information to the first UE. On the first time-frequency resource, a pilot is sent to the first UE.

13. The base station according to claim 12, wherein the control unit is further configured to control the first time-frequency resource not to be used for sending data of the second UE.

14. The base station according to any one of claims 10 to 13, characterized in that, the base station further includes: a location determination unit, configured to determine the location of the first UE, and the location of the first UE includes a inside the virtual sector or at the junction of some virtual sectors among all virtual sectors corresponding to the base station; and the generating unit is configured to generate according to the position of the first UE determined by the position determining unit. The configuration information.

15. The base station according to any one of claims 10 to 14, characterized in that the pilot is a channel state information reference signal CSI-RS.

16. A user equipment, characterized in that it includes: a receiving unit, configured to receive configuration information sent by a base station, where the configuration information indicates that as a first user The time-frequency resource where the user equipment of the user equipment UE performs interference measurement, and the time-frequency resource is also used to send data of the second UE; wherein the first UE and the second UE form a paired UE; Interference measurement A unit configured to perform interference measurement on the time-frequency resources indicated by the configuration information.

17. The user equipment according to claim 16, wherein the time-frequency resource in which the first UE performs interference measurement indicated by the configuration information is the first time-frequency resource occupied by the pilot sent to the first UE. frequency resource, and the interference measurement unit is specifically configured to: perform channel measurement on the pilot sent by the base station on the first time-frequency resource, and obtain a channel measurement result including interference from the second UE.

18. The user equipment according to claim 16, wherein the time-frequency resource where the first UE performs interference measurement indicated by the configuration information is the second time-frequency resource where the interference management resource IMR is located, and the configuration The information also indicates the first time-frequency resource occupied by the pilot sent to the first UE, and the base station further includes:

A signal measurement unit, configured to perform signal measurement on the pilot sent by the base station on the first time-frequency resource;

A measurement result acquisition unit, configured to obtain a channel measurement result including interference from the second UE based on the interference measurement results of the interference measurement unit and the signal measurement results of the signal measurement unit.