CN105612777B

CN105612777B - Measure method, user equipment and the transmitting terminal of channel quality

Info

Publication number: CN105612777B
Application number: CN201480000299.9A
Authority: CN
Inventors: 温容慧; 周明宇; 孙伟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2014-03-28
Filing date: 2014-03-28
Publication date: 2019-03-26
Anticipated expiration: 2034-03-28
Also published as: CN105612777A; WO2015143690A1

Abstract

The invention discloses a kind of method, user equipment and transmitting terminals for measuring channel quality.This method comprises: the first UE receives the first reference signal that transmitting terminal is sent；First UE according to first reference signal determine the transmitting terminal to the first UE channel first kind channel quality；First UE receives the second reference signal that the 2nd UE is sent, wherein the 2nd UE is the neighbouring UE of the first UE；First UE according to first reference signal and second reference signal determine the transmitting terminal to the first UE channel the second class channel quality, wherein, which indicates using the 2nd UE as the channel quality of the channel of transmitting terminal when interference source to the first UE；First UE sends the first kind channel quality and the second class channel quality to the transmitting terminal.Method, user equipment and the transmitting terminal of the measurement channel quality of the embodiment of the present invention, can be improved transmission quality.

Description

Method for measuring channel quality, user equipment and sending terminal

Technical Field

The present invention relates to the field of communications, and more particularly, to a method, user equipment and transmitting end for measuring channel quality

Background

A Long Term Evolution (LTE) system supports Time Division Duplex (TDD) and Frequency Division Duplex (FDD) modes. However, as the demand for traffic rises, the spectrum resources are increasingly strained, and new technologies are continuously introduced to improve the utilization rate of the existing resources.

In an FDD system, uplink and downlink bandwidths are equal, but uplink and downlink traffic volumes are not necessarily symmetrical, and downlink traffic is generally larger than uplink traffic, which results in resource waste. The prior art supports that a station with a large downlink service requirement can dynamically transmit downlink data by using an idle uplink frequency band to fully utilize resources. However, the surrounding cells may still maintain the original transmission direction of the frequency band resource, resulting in different signal transmission directions of the neighboring cells. If the signal transmission directions of User Equipment (UE) belonging to different cells in the edge area of the adjacent cells are different. Because the two UEs are close to each other, the UE sending the uplink signal has strong interference to the UE receiving the downlink signal.

The LTE TDD system can dynamically or semi-statically adjust the uplink and downlink resource allocation according to the change of the uplink and downlink service requirements, that is, a "dynamic TDD system". In the dynamic TDD system, there are also different UE signal transmission directions belonging to different cells in the edge area of adjacent cells at the same time.

When the transmission directions of the adjacent cells are different, the user receiving the downlink signal is interfered by the user sending the uplink signal by the adjacent cell. The strength of the interference of neighboring users is related to the distance between users and the transmission power of the interfering users. Generally, the transmitting power of a user close to a base station is lower, the distance from the user adjacent to the base station is longer, and the interference to the user receiving downlink signals in the adjacent area is smaller; the transmitting power of the user far away from the base station is higher, the distance from the user adjacent to the base station is shorter, and the interference to the user receiving the downlink signal in the adjacent area is larger; in particular, the interference strength of a user sending an uplink signal in an edge area to a downlink receiving user in the same edge area is extremely large. When the transmission directions of the adjacent cells are the same, the user measures the quality of the downlink channel, and the interference source is the adjacent cell base station, which can be considered as small interference fluctuation. When the transmission directions of neighboring cells are different, if the measured transmission directions of the neighboring cells are the same, the measured channel quality may have a large deviation from the actual channel quality, which may cause inaccurate Modulation and Coding Scheme (MCS) adopted during scheduling, thereby affecting the transmission quality.

Disclosure of Invention

The embodiment of the invention provides a method for measuring channel quality, user equipment and a sending end, which can improve transmission quality.

In a first aspect, a method for measuring channel quality is provided, including:

a first UE receives a first reference signal sent by a sending end;

the first UE determines the first type of channel quality of a channel from the sending end to the first UE according to the first reference signal;

the first UE receives a second reference signal sent by a second UE, wherein the second UE is a UE adjacent to the first UE;

the first UE determines a second type of channel quality of a channel from the sending end to the first UE according to the first reference signal and the second reference signal, wherein the second type of channel quality represents the channel quality of the channel from the sending end to the first UE when the second UE is used as an interference source;

and the first UE sends the first type of channel quality and the second type of channel quality to the sending end.

With reference to the first aspect, in a first possible implementation manner, before the first UE receives the second reference signal sent by the second UE, the method further includes:

the first UE acquires reference signal information of the second UE;

the first UE receiving a second reference signal sent by a second UE, including:

the first UE receives the second reference signal according to the reference signal information of the second UE.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the receiving, by the first UE, the second reference signal according to the reference signal information of the second UE includes:

the first UE receives the second reference signal on a subband corresponding to the second reference signal at the sending time of the second reference signal according to the reference signal information of the second UE;

the first UE determines a second type of channel quality of a channel from the transmitting end to the first UE according to the first reference signal and the second reference signal, including:

and the first UE determines the second type of channel quality of the channel from the transmitting end to the first UE on the sub-band at the transmitting moment according to the first reference signal and the second reference signal.

With reference to the first or second possible implementation manner of the first aspect, in a third possible implementation manner, the acquiring, by the first UE, the reference signal information of the second UE includes:

and the first UE receives the reference signal information of the second UE sent by the base station.

With reference to the first aspect or any one of the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner, before the first UE receives the second reference signal sent by the second UE, the method further includes:

the first UE receives a notification of reporting two types of channel quality sent by a base station, where the notification is used to instruct the first UE to send the first type of channel quality and the second type of channel quality to the sending end.

In a second aspect, a method for measuring channel quality is provided, including:

a sending end sends a first reference signal to a first UE;

the sending end receives first-class channel quality and second-class channel quality of a channel from the sending end to the first UE, wherein the first-class channel quality is determined by the first UE according to the first reference signal, the second-class channel quality is determined by the first UE according to the first reference signal and the second reference signal, the second reference signal is sent by a second UE, the second UE is a UE adjacent to the first UE, and the second-class channel quality represents the channel quality of the channel from the sending end to the first UE when the second UE is used as an interference source;

and the sending end sends data to the first UE according to the first type of channel quality or the second type of channel quality.

With reference to the second aspect, in a first possible implementation manner, before the sending end sends data to the first UE according to the first type of channel quality or the second type of channel quality, the method further includes:

the sending end obtains the scheduling information of the second UE;

the sending end sends data to the first UE according to the first type of channel quality or the second type of channel quality, including:

and the sending end selects to send data to the first UE according to the first type of channel quality or the second type of channel quality according to the scheduling information of the second UE.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner, the selecting, by the sending end, to send data to the first UE according to the first type of channel quality or the second type of channel quality according to the scheduling information of the second UE includes:

if the second UE sends data when the sending end sends data to the first UE, the sending end determines a modulation and coding strategy to send data to the first UE according to the second type of channel quality; or,

if the second UE does not send data when the sending end sends data to the first UE, the sending end determines a modulation and coding strategy to send data to the first UE according to the first type of channel quality.

With reference to the first or second possible implementation manner of the second aspect, in a third possible implementation manner, the acquiring, by the sending end, the scheduling information of the second UE includes:

the sending end receives the scheduling information of the second UE sent by the serving base station of the second UE.

With reference to the second aspect or any one possible implementation manner of the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner, the sending end is a serving base station of the first UE;

the method further comprises the following steps:

the sending end sends the reference signal information of the second UE to the first UE, and the reference signal information of the second UE is used for the first UE to receive the second reference signal according to the reference signal information of the second UE.

With reference to the second aspect or any one possible implementation manner of the first to fourth possible implementation manners of the second aspect, in a fifth possible implementation manner, the sending end is a serving base station of the first UE;

the method further comprises the following steps:

the sending end sends a notification reporting two types of channel quality to the first UE, wherein the notification is used for indicating the first UE to send the first type of channel quality and the second type of channel quality to the sending end.

In a third aspect, a UE is provided, including:

a receiving module, configured to receive a first reference signal sent by a sending end and receive a second reference signal sent by a second UE, where the second UE is a UE adjacent to the UE;

a determining module, configured to determine a first type of channel quality of a channel from the transmitting end to the UE according to the first reference signal, and determine a second type of channel quality of the channel from the transmitting end to the UE according to the first reference signal and the second reference signal, where the second type of channel quality indicates the channel quality of the channel from the transmitting end to the UE when the second UE is used as an interference source;

and the sending module is used for sending the first type of channel quality and the second type of channel quality to the sending end.

With reference to the third aspect, in a first possible implementation manner, the UE further includes:

an obtaining module, configured to obtain reference signal information of the second UE;

the receiving module is specifically configured to receive the second reference signal according to the reference signal information of the second UE.

With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner, the receiving module is specifically configured to receive, according to the reference signal information of the second UE, the second reference signal on a subband corresponding to the second reference signal at the time of sending the second reference signal;

the determining module is specifically configured to determine, according to the first reference signal and the second reference signal, the second type of channel quality of a channel from the transmitting end to the first UE on the sub-band at the transmitting time.

With reference to the first or second possible implementation manner of the third aspect, in a third possible implementation manner, the receiving module is further configured to receive reference signal information of the second UE sent by the base station;

the obtaining module is specifically configured to obtain the reference signal information of the second UE received by the receiving module.

With reference to the third aspect or any one possible implementation manner of the first to third possible implementation manners of the third aspect, in a fourth possible implementation manner, the receiving module is further configured to receive a notification that reports two types of channel qualities, where the notification is used to instruct the UE to send the first type of channel quality and the second type of channel quality to the sending end.

In a fourth aspect, a transmitting end is provided, including:

a sending module, configured to send a first reference signal to a first user equipment UE;

a receiving module, configured to receive a first type of channel quality and a second type of channel quality of a channel from the sending end to the first UE, where the first type of channel quality is determined by the first UE according to the first reference signal, the second type of channel quality is determined by the first UE according to the first reference signal and a second reference signal, the second reference signal is sent by a second UE, the second UE is a UE adjacent to the first UE, and the second type of channel quality indicates a channel quality of a channel from the sending end to the first UE when the second UE is used as an interference source;

the sending module is further configured to send data to the first UE according to the first type of channel quality or the second type of channel quality.

With reference to the fourth aspect, in a first possible implementation manner, the sending end further includes:

an obtaining module, configured to obtain scheduling information of the second UE;

the sending module is specifically configured to select to send data to the first UE according to the first type of channel quality or the second type of channel quality according to the scheduling information of the second UE.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the sending module is specifically configured to,

if the second UE sends data when sending data to the first UE, determining a modulation and coding strategy according to the second type of channel quality to send data to the first UE; or,

and if the second UE does not send data when sending data to the first UE, determining a modulation and coding strategy according to the first type of channel quality to send data to the first UE.

With reference to the first or second possible implementation manner of the fourth aspect, in a third possible implementation manner, the receiving module is further configured to receive scheduling information of the second UE, which is sent by a serving base station of the second UE;

the obtaining module is specifically configured to obtain the scheduling information of the second UE received by the receiving module.

With reference to the fourth aspect or any one possible implementation manner of the first to third possible implementation manners of the fourth aspect, in a fourth possible implementation manner, the sending end is a serving base station of the first UE;

the sending module is further configured to send the reference signal information of the second UE to the first UE, where the reference signal information of the second UE is used for the first UE to receive the second reference signal according to the reference signal information of the second UE.

With reference to the fourth aspect or any one possible implementation manner of the first to fourth possible implementation manners of the fourth aspect, in a fifth possible implementation manner, the sending end is a serving base station of the first UE;

the sending module is further configured to send a notification reporting two types of channel qualities to the first UE, where the notification is used to instruct the first UE to send the first type of channel quality and the second type of channel quality to the sending end.

Based on the above technical solution, the embodiment of the present invention determines the first type of channel quality according to the first reference signal sent by the sending end, and determines the second type of channel quality according to the first reference signal and the second reference signal sent by the neighboring UE, so as to obtain accurate channel quality and improve transmission quality.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1A to 1D are schematic views of scenes to which the embodiment of the present invention can be applied.

Fig. 2 is a schematic flow chart of a method of measuring channel quality according to an embodiment of the present invention.

Fig. 3 is a diagram illustrating a method of measuring channel quality of a corresponding sub-band according to an embodiment of the present invention.

Fig. 4 is a schematic flow chart of a method of measuring channel quality according to another embodiment of the present invention.

Fig. 5 is a schematic block diagram of a UE according to an embodiment of the present invention.

Fig. 6 is a schematic block diagram of a transmitting end of an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a UE according to another embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a transmitting end according to another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical scheme of the embodiment of the invention can be applied to systems with different transmission directions of adjacent cells or adjacent UE.

For example, fig. 1A to 1D are schematic diagrams of scenarios to which embodiments of the present invention may be applied.

In fig. 1A, the UE102 served by the base station 104 is located in the edge area of the cell of the base station 104 and is closer to the UE101 served by the base station 103, i.e. the UE102 is a neighboring UE of the UE 101. When the transmission directions of the UE101 and the UE102 are different, for example, at the same time, the UE101 receives a downlink signal transmitted by the base station 103, the UE102 transmits an uplink signal to the base station 104, and the uplink signal transmitted by the UE102 interferes with the reception of the downlink signal by the UE 101.

In fig. 1B, base station 113 and base station 114 are adjacent to each other, UE111 is located in the edge area of the cell of base station 113, UE112 is located in the edge area of the cell of base station 114, and UE111 and UE112 are closer to each other and are adjacent to each other. When the transmission directions of UE111 and UE112 are different, for example, at the same time, UE111 receives the downlink signal transmitted by base station 113, UE112 transmits the uplink signal to base station 114, and the uplink signal transmitted by UE112 interferes with the reception of the downlink signal by UE 111.

In fig. 1C, the base station 123 is a full duplex base station, i.e., the base station 123 can randomly schedule two different users on the same resource at the same time within its coverage area. For example, if the base station 123 transmits downlink information to the UE121 at the frequency f1 and the scheduled UE122 transmits uplink information to the base station 123 at the frequency f1, the uplink signal transmitted by the UE122 may affect the UE121 to demodulate the downlink signal.

In fig. 1D, UE131 and UE133 are Device to Device (D2D) users. When UE131 and UE133 transmit signals to each other in the uplink frequency band, the transmission of uplink signals by neighboring UE132 may cause interference to the communication between UE131 and UE 133. UE131 and UE133 may interfere with UE132 receiving downlink signals when they transmit signals to each other in the downlink frequency band.

In the embodiment of the present invention, a User Equipment (UE) may be referred to as a Terminal (Terminal), a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), and the like, and the User Equipment may communicate with one or more core networks through a Radio Access Network (RAN), for example, the User Equipment may be a Mobile phone (or referred to as a "cellular phone"), a computer with a Mobile Terminal, and the like, and for example, the User Equipment may also be a portable, pocket, handheld, computer-embedded, or vehicle-mounted Mobile device, and they exchange voice and/or data with the RAN.

In the embodiment of the present invention, the Base station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base station (NodeB, NB) in WCDMA, or an evolved Node B (ENB or e-NodeB) in LTE, which is not limited in the present invention. For convenience of description, the following embodiments will be described by taking a base station and a user equipment UE as examples.

Fig. 2 shows a schematic flow diagram of a method 200 of measuring channel quality according to an embodiment of the invention. As shown in fig. 2, the method 200 includes:

s210, a first UE receives a first reference signal sent by a sending end;

s220, the first UE determines the first type of channel quality of the channel from the sending end to the first UE according to the first reference signal;

s230, the first UE receives a second reference signal sent by a second UE, where the second UE is a neighboring UE of the first UE;

s240, the first UE determines a second type of channel quality of a channel from the transmitting end to the first UE according to the first reference signal and the second reference signal, where the second type of channel quality indicates the channel quality of the channel from the transmitting end to the first UE when the second UE is used as an interference source;

s250, the first UE sends the first type of channel quality and the second type of channel quality to the sending end.

In this embodiment of the present invention, the first UE of the execution main body of the method 200 is a UE that needs to receive data from a transmitting end. For example, the first UE may be UE101 in fig. 1A, UE111 in fig. 1B, UE121 in fig. 1C, or UE131 in fig. 1D, the corresponding transmitting end is base station 103, base station 113, base station 123, or UE133, and the corresponding second UE is UE102, UE112, UE122, or UE 132.

In the embodiment of the present invention, the first-type channel quality represents a channel quality determined only from a reference signal (denoted as a first reference signal) transmitted by a transmitting end; the second type of channel quality represents a channel quality determined from the first reference signal and a reference signal (denoted as a second reference signal) transmitted by the second UE, with the second UE (neighboring UE) as an interference source. The second UE is a neighboring UE of the first UE, that is, signal transmission of the second UE may cause interference to signal reception of the first UE.

In the embodiment of the present invention, a first UE determines a first type of channel quality of a channel from a transmitting end to the first UE according to a first reference signal sent by the transmitting end, receives a second reference signal sent by a second UE, determines a second type of channel quality of the channel from the transmitting end to the first UE according to the first reference signal and the second reference signal, and then sends the first type of channel quality and the second type of channel quality to the transmitting end. The second type of channel quality is more accurate in case of interference of the second UE with the first UE receiving data. The sending end can adopt the first kind of channel quality or the second kind of channel quality to determine the MCS used for sending data according to different conditions, thereby improving the transmission quality.

Therefore, the method for measuring channel quality according to the embodiment of the present invention determines the first type of channel quality according to the first reference signal sent by the sending end, and determines the second type of channel quality according to the first reference signal and the second reference signal sent by the neighboring UE, so that accurate channel quality can be obtained, and transmission quality can be improved.

In this embodiment of the present invention, optionally, before the first UE receives the second reference signal sent by the second UE, the method 200 further includes:

the first UE acquires reference signal information of the second UE;

The reference signal of the second UE may be a Sounding Reference Signal (SRS) transmitted by the second UE. It should be understood that the reference signal of the second UE may also be another reference signal transmitted by the second UE, and the present invention is not limited thereto. The reference signal information of the second UE includes: reference signal starting resource location, comb, cyclic shift, period or frequency hopping parameter, etc. The first UE firstly acquires the reference signal information of the second UE, and then receives a second reference signal sent by the second UE according to the reference signal information of the second UE.

In this embodiment of the present invention, optionally, the acquiring, by the first UE, the reference signal information of the second UE includes:

Specifically, a first UE acquires reference signal information of a second UE from a serving base station. In the case where the first UE and the second UE have a common serving base station, the serving base station may directly transmit reference signal information of the second UE to the first UE. For example, in the scenario shown in fig. 1C, the base station 123 acquires the reference information signal of the UE122, and sends the reference information signal of the UE122 to the UE 121; in the scenario shown in fig. 1D, the base station 134 acquires the reference information signal of the UE132 and sends the reference information signal of the UE132 to the UE 131.

In the case that the first UE and the second UE do not have a common serving base station, the serving base station of the first UE may receive the reference signal information of the second UE from the serving base station of the second UE, and then send the reference signal information of the second UE to the first UE. For example, in the scenario shown in fig. 1B, the base station 123 receives the reference signal information of the UE112 from the base station 124, and transmits the reference signal information of the UE112 to the UE 111.

In the scenario shown in fig. 1A, both the base station 103 and the base station 104 may send signals to the UE101, and therefore, the base station 104 may directly send the reference signal information of the UE102 to the UE101, or may send the reference signal information of the UE102 to the base station 103, and then the base station 103 sends the reference signal information of the UE102 to the UE 101.

In the embodiment of the present invention, optionally, before acquiring the reference signal information of the second UE, the base station determines the second UE first. In other words, the base station determines UEs that may cause interference to the first UE receiving data. Optionally, in case the first UE and a possible second UE have a common serving base station, the serving base station may determine the second UE; in the case where the first UE and the possible second UE do not have a common serving base station, the serving base station of the possible second UE may determine the second UE.

Taking the scenario shown in fig. 1A as an example, the base station 104 determines a UE that may cause interference to downlink transmission of the base station 103 (the UE101 receives data transmitted by the base station 103). If a certain UE within the cell of the base station 104 may cause interference to the cell of the base station 103, it may be determined that it should be in the edge area of the cell of the base station 104 and adjacent to the cell of the base station 103. The base station 104 may determine whether the UE is an interfering UE according to Reference Signal Receiving Power (RSRP) reported by the UE. For example, if the RSRP of the base station 103 measured by the UE is greater than a certain threshold or the difference between the RSRP of the base station 104 measured by the UE and the RSRP of the base station 103 is less than a certain threshold, it is determined that the UE is an interference source of the cell of the base station 103, i.e., it is determined as the second UE.

In this embodiment of the present invention, optionally, the receiving, by the first UE, the second reference signal according to the reference signal information of the second UE includes:

and the first UE receives the second reference signal on the subband corresponding to the second reference signal at the sending time of the second reference signal according to the reference signal information of the second UE.

In this case, the determining, by the first UE, the second type of channel quality of the channel from the transmitting end to the first UE according to the first reference signal and the second reference signal includes:

Specifically, the second reference signal sent by the second UE may be frequency hopped, and each time only occupies a smaller bandwidth, so that the first UE needs to receive the second reference signal sent by the second UE on a corresponding sub-band at the sending time of the second reference signal according to the frequency hopping parameter of the second UE, and then determine the second type of channel quality on the sub-band at the sending time by using the second UE as an interference source.

For example, as shown in fig. 3, at time 1, the first UE measures the second reference signal on the corresponding sub-band (sub-band 1, sub-band 2, sub-band 3) according to the reference signal information of the second UE (UE1 and UE2) acquired in advance, and determines the second type channel quality of the 3 sub-bands according to the measured second reference signal;

at time 2, the first UE measures a second reference signal on subband 2 and determines therefrom a second type of channel quality for subband 2;

at time 3, the first UE measures the second reference signal on subband 3, subband 6, subband 7 and determines therefrom the second type of channel quality for these 3 subbands.

Optionally, when determining the second-type channel quality, the first UE may receive the first reference signal sent by the sending end at the current measurement time, or store the first reference signal after receiving at other times.

Optionally, the subband width at which the first UE measures and reports the second type of channel quality is in accordance with the bandwidth design of the second reference signal.

Taking the SRS as an example, since the transmission bandwidth of the SRS is a multiple of 4 Resource Blocks (RBs), the subband width for the first UE to measure and report the second type of channel quality is consistent with the bandwidth design of the SRS (multiple of 4 RBs).

In this embodiment, the base station notifies the first UE to measure and report two types of channel quality, and the first UE receives the second reference signal and determines the second type of channel quality based on the notification of the base station.

It should be understood that the base station may not send the above-mentioned notification to the first UE, in which case the first UE may receive the second reference signal and determine the second type of channel quality after receiving the reference signal information of the second UE sent by the base station.

And the first UE takes the second UE as an interference source and determines the second type of channel quality according to the first reference signal and the second reference signal. After obtaining the first-type channel quality and the second-type channel quality, the first UE reports the first-type channel quality and the second-type channel quality to the sending end. Alternatively, the first UE may report after each measurement, or periodically. In the case where there are multiple subbands for the second UE, the reporting may be in a pre-agreed order.

And after receiving the first-class channel quality and the second-class channel quality reported by the first UE, the sending end updates the corresponding channel quality. For example, when the first UE reports the second type of channel quality of multiple sub-bands, the transmitting end updates the channel quality of the corresponding sub-band according to the frequency hopping parameter of the second UE.

When a sending end sends data to a first UE, according to whether a second UE sends the data, the MCS used for sending the data to the first UE is determined by adopting the first type of channel quality or the second type of channel quality.

For example, if the second UE transmits data when the transmitting end transmits data to the first UE, the transmitting end determines an MCS according to the second type of channel quality to transmit data to the first UE. If the second UE does not send data when the sending end sends data to the first UE, the sending end determines the MCS to send data to the first UE according to the first type of channel quality. Thus, the first UE can also accurately receive the data of the transmitting end under the condition that the second UE interferes the first UE to receive the data.

According to the method for measuring the channel quality, the first type of channel quality is determined according to the first reference signal sent by the sending end, and the second type of channel quality is determined according to the first reference signal and the second reference signal sent by the adjacent UE, so that the accurate channel quality can be obtained, the sending end sends data according to the accurate channel quality, and the transmission quality can be improved.

The method of measuring channel quality according to an embodiment of the present invention is described in detail above from the perspective of the first UE, and the method of measuring channel quality according to an embodiment of the present invention is described below from the perspective of the transmitting end.

Fig. 4 shows a schematic flow diagram of a method 400 of measuring channel quality according to an embodiment of the invention. As shown in fig. 4, the method 400 includes:

s410, a sending end sends a first reference signal to a first UE;

s420, the transmitting end receives a first type of channel quality and a second type of channel quality of a channel from the transmitting end to the first UE, where the first type of channel quality is determined by the first UE according to the first reference signal, the second type of channel quality is determined by the first UE according to the first reference signal and the second reference signal, the second reference signal is transmitted by a second UE, the second UE is a UE adjacent to the first UE, and the second type of channel quality indicates a channel quality of a channel from the transmitting end to the first UE when the second UE is used as an interference source;

s430, the sending end sends data to the first UE according to the first type of channel quality or the second type of channel quality.

In this embodiment of the present invention, the sender, which is the execution subject of the method 400, is a device that sends data to the first UE. For example, the first UE may be UE101 in fig. 1A, UE111 in fig. 1B, UE121 in fig. 1C, or UE131 in fig. 1D, the corresponding transmitting end is base station 103, base station 113, base station 123, or UE133, and the corresponding second UE is UE102, UE112, UE122, or UE 132.

In the embodiment of the invention, a sending end receives the first type channel quality and the second type channel quality sent by the first UE. The first type of channel quality is determined by the first UE according to a first reference signal sent by a sending end, and the second type of channel quality is determined by the first UE according to the first reference signal and a second reference signal sent by the second UE. When sending data to the first UE, the sending end may send data to the first UE according to the first type of channel quality or the second type of channel quality according to different situations.

Therefore, the method for measuring channel quality according to the embodiment of the present invention may send data to the first UE according to the accurate channel quality by receiving the first type of channel quality determined according to the first reference signal of the sending end and the second type of channel quality determined according to the first reference signal and the second reference signal sent by the neighboring UE, which are sent by the first UE, so that the transmission quality may be improved.

In this embodiment of the present invention, optionally, in a case that the sending end is a serving base station of the first UE, the method 400 further includes:

The transmitting end may be a serving base station of the first UE (e.g., the scenarios shown in fig. 1A, 1B, and 1C), or may be a UE in D2D communication with the first UE (e.g., the scenario shown in fig. 1D).

Under the condition that a sending end is a service base station of first UE, the sending end sends reference signal information of second UE to the first UE; in the case that the transmitting end is not the serving base station of the first UE, the first UE acquires reference signal information of the second UE from its serving base station.

The reference signal of the second UE may be an SRS transmitted by the second UE. It should be understood that the reference signal of the second UE may also be another reference signal transmitted by the second UE, and the present invention is not limited thereto. The reference signal information of the second UE includes: reference signal starting resource location, comb, cyclic shift, period or frequency hopping parameter, etc.

Under the condition that a sending end is a service base station of first UE, the sending end (base station) informs the first UE to measure and report two types of channel quality; in case that the transmitting end is not the serving base station of the first UE, the serving base station of the first UE notifies the first UE to measure and report two types of channel quality. The first UE receives a second reference signal based on the notification and determines a second type of channel quality.

The first UE determines a first type of channel quality from the first reference signal. And the first UE takes the second UE as an interference source and determines the second type of channel quality according to the first reference signal and the second reference signal. After obtaining the first-type channel quality and the second-type channel quality, the first UE reports the first-type channel quality and the second-type channel quality to the sending end. And after receiving the first type of channel quality and the second type of channel quality sent by the first UE, the sending end sends data to the first UE according to the first type of channel quality or the second type of channel quality.

In this embodiment of the present invention, optionally, before the sending end sends data to the first UE according to the first type of channel quality or the second type of channel quality, the method 400 further includes:

the sending end obtains the scheduling information of the second UE;

Specifically, the sending end sends data to the first UE according to the scheduling information of the second UE and the first type channel quality and the second type channel quality reported by the first UE. For example, if the second UE sends data when the sending end sends data to the first UE, the sending end determines a modulation and coding strategy according to the second type of channel quality to send data to the first UE. If the second UE does not send data when the sending end sends data to the first UE, the sending end determines a modulation and coding strategy to send data to the first UE according to the first type of channel quality. That is, when transmitting data to the first UE, if the second UE is transmitting data, the transmitting end determines the MCS used for transmitting data to the first UE according to the second type of channel quality, and transmits data to the first UE using the MCS; and if the second UE does not send data, determining the MCS used for sending the data to the first UE according to the first type of channel quality, and sending the data to the first UE by using the MCS.

In the embodiment of the present invention, if the sending end is a serving base station of a second UE (for example, the scenario shown in fig. 1C), the sending end may directly obtain scheduling information of the second UE. If the transmitting end is not the serving base station of the second UE (e.g., the scenarios shown in fig. 1A, fig. 1B, and fig. 1D), the transmitting end may receive the scheduling information of the second UE sent by the serving base station of the second UE, that is, the transmitting end may obtain the scheduling information of the second UE from the serving base station of the second UE.

It should be understood that, in the embodiment of the present invention, the interaction between the devices described by the first UE side and the related characteristics, functions, and the like correspond to the description of the sending end side, and for brevity, the description is not repeated herein.

According to the method for measuring the channel quality, the first type of channel quality which is sent by the first UE and determined according to the first reference signal of the sending end and the second type of channel quality which is sent by the first reference signal and the second reference signal sent by the adjacent UE are received, data can be sent to the first UE according to the accurate channel quality, and therefore the transmission quality can be improved.

It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

Having described the method of measuring channel quality according to an embodiment of the present invention in detail above, a UE and a transmitting end according to an embodiment of the present invention will be described below.

Fig. 5 shows a schematic block diagram of a UE500 according to an embodiment of the invention. As shown in fig. 5, the UE500 includes:

a receiving module 510, configured to receive a first reference signal sent by a sending end, and receive a second reference signal sent by a second UE, where the second UE is a UE adjacent to the UE;

a determining module 520, configured to determine a first type of channel quality of a channel from the transmitting end to the UE according to the first reference signal, and determine a second type of channel quality of the channel from the transmitting end to the UE according to the first reference signal and the second reference signal, where the second type of channel quality indicates the channel quality of the channel from the transmitting end to the UE when the second UE is used as an interference source;

a sending module 530, configured to send the first type of channel quality and the second type of channel quality to the sending end.

According to the UE provided by the embodiment of the invention, the first type of channel quality is determined according to the first reference signal sent by the sending end, and the second type of channel quality is determined according to the first reference signal and the second reference signal sent by the adjacent UE, so that the accurate channel quality can be obtained, and the transmission quality can be improved.

In this embodiment of the present invention, optionally, the UE500 further includes:

the receiving module 510 is specifically configured to receive the second reference signal according to the reference signal information of the second UE.

In this embodiment of the present invention, optionally, the receiving module 510 is specifically configured to receive, according to the reference signal information of the second UE, the second reference signal on a subband corresponding to the second reference signal at the sending time of the second reference signal;

the determining module 520 is specifically configured to determine the second type of channel quality of the sub-band of the channel from the transmitting end to the first UE at the transmitting time according to the first reference signal and the second reference signal.

In this embodiment of the present invention, optionally, the receiving module 510 is further configured to receive reference signal information of the second UE sent by the base station;

the obtaining module is specifically configured to obtain the reference signal information of the second UE received by the receiving module 510.

In this embodiment of the present invention, optionally, the receiving module 510 is further configured to receive a notification sent by a base station to report two types of channel qualities, where the notification is used to instruct the UE to send the first type of channel quality and the second type of channel quality to the sending end.

The UE500 according to the embodiment of the present invention may correspond to the first UE in the method for measuring channel quality according to the embodiment of the present invention, and the above and other operations and/or functions of each module in the UE500 are respectively corresponding processes of the foregoing methods, and are not described herein again for brevity.

Fig. 6 shows a schematic block diagram of a transmitting end 600 according to an embodiment of the present invention. As shown in fig. 6, the transmitting end 600 includes:

a sending module 610, configured to send a first reference signal to a first user equipment UE;

a receiving module 620, configured to receive a first type of channel quality and a second type of channel quality of a channel from the sending end to the first UE, where the first type of channel quality is determined by the first UE according to the first reference signal, the second type of channel quality is determined by the first UE according to the first reference signal and a second reference signal, the second reference signal is sent by a second UE, the second UE is a UE adjacent to the first UE, and the second type of channel quality indicates a channel quality of a channel from the sending end to the first UE when the second UE is used as an interference source;

the sending module 610 is further configured to send data to the first UE according to the first type of channel quality or the second type of channel quality.

The transmitting end of the embodiment of the invention can transmit data to the first UE according to accurate channel quality by receiving the first type of channel quality which is transmitted by the first UE and determined according to the first reference signal of the transmitting end and the second type of channel quality which is transmitted by the first UE and determined according to the first reference signal and the second reference signal transmitted by the adjacent UE, thereby improving the transmission quality.

In this embodiment of the present invention, optionally, the sending end 600 further includes:

the sending module 610 is specifically configured to select to send data to the first UE according to the first type of channel quality or the second type of channel quality according to the scheduling information of the second UE.

In this embodiment of the present invention, optionally, the sending module 610 is specifically configured to,

In this embodiment of the present invention, optionally, the receiving module 620 is further configured to receive scheduling information of the second UE sent by the serving base station of the second UE;

the obtaining module is specifically configured to obtain the scheduling information of the second UE received by the receiving module 620.

In this embodiment of the present invention, optionally, the sending end 600 is a serving base station of the first UE;

the sending module 610 is further configured to send the reference signal information of the second UE to the first UE, where the reference signal information of the second UE is used for the first UE to receive the second reference signal according to the reference signal information of the second UE.

the sending module 610 is further configured to send a notification reporting two types of channel qualities to the first UE, where the notification is used to instruct the first UE to send the first type of channel quality and the second type of channel quality to the sending end.

The transmitting end 600 according to the embodiment of the present invention may correspond to a transmitting end in the method for measuring channel quality according to the embodiment of the present invention, and the above and other operations and/or functions of each module in the transmitting end 600 are respectively corresponding processes of the foregoing methods, and are not described herein again for brevity.

Fig. 7 shows a structure of a UE according to another embodiment of the present invention, which includes at least one processor 702 (e.g., CPU), at least one network interface 705 or other communication interfaces, a memory 706, and at least one communication bus 703 for implementing connection communication among these components. The processor 702 is configured to execute executable modules, such as computer programs, stored in the memory 706. The Memory 706 may comprise a high-speed Random Access Memory (RAM), and may also include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection with at least one other network element is realized through at least one network interface 705 (which may be wired or wireless).

In some embodiments, the memory 706 stores the program 7061, and the processor 702 executes the program 7061 for:

receiving a first reference signal sent by a sending end through a network interface;

determining the first type of channel quality of a channel from the sending end to the UE according to the first reference signal;

receiving a second reference signal sent by a second UE through a network interface, wherein the second UE is a UE adjacent to the UE;

determining a second type of channel quality of a channel from the transmitting end to the UE according to the first reference signal and the second reference signal, wherein the second type of channel quality represents the channel quality of the channel from the transmitting end to the UE when the second UE is used as an interference source;

and sending the first type of channel quality and the second type of channel quality to the sending end through a network interface.

Optionally, the processor is further configured to obtain reference signal information of the second UE;

the processor is specifically configured to receive the second reference signal according to the reference signal information of the second UE.

Optionally, the processor is specifically configured to receive, according to the reference signal information of the second UE, the second reference signal on a subband corresponding to the second reference signal at the sending time of the second reference signal;

and determining the second type of channel quality of the channel from the transmitting end to the UE on the sub-band at the transmitting moment according to the first reference signal and the second reference signal.

Optionally, the processor is specifically configured to receive, through a network interface, reference signal information of the second UE sent by a base station.

Optionally, the processor is further configured to receive, through a network interface, a notification that reports two types of channel qualities, where the notification is used to instruct the UE to send the first type of channel quality and the second type of channel quality to the sending end.

As can be seen from the above technical solutions provided in the embodiments of the present invention, the first type of channel quality is determined according to the first reference signal sent by the sending end, and the second type of channel quality is determined according to the first reference signal and the second reference signal sent by the neighboring UE, so that accurate channel quality can be obtained, and transmission quality can be improved.

Fig. 8 shows a structure of a transmitting end according to still another embodiment of the present invention, which includes at least one processor 802 (e.g., a CPU), at least one network interface 805 or other communication interface, a memory 806, and at least one communication bus 803 for implementing connection communication between these components. The processor 802 is operable to execute executable modules, such as computer programs, stored in the memory 806. The memory 806 may comprise a high-speed Random Access Memory (RAM) and may also comprise a non-volatile memory, such as at least one disk memory. The communication connection with at least one other network element is realized through at least one network interface 805 (which may be wired or wireless).

In some embodiments, the memory 806 stores a program 8061, and the processor 802 executes the program 8061 to perform the following operations:

transmitting a first reference signal to a first UE through a network interface;

receiving, by a network interface, a first type of channel quality and a second type of channel quality of a channel from the transmitting end to the first UE, where the first type of channel quality is determined by the first UE according to the first reference signal, the second type of channel quality is determined by the first UE according to the first reference signal and a second reference signal, the second reference signal is transmitted by a second UE, the second UE is a UE adjacent to the first UE, and the second type of channel quality indicates a channel quality of a channel from the transmitting end to the first UE when the second UE is used as an interference source;

and sending data to the first UE through a network interface according to the first type of channel quality or the second type of channel quality.

Optionally, the processor is further configured to obtain scheduling information of the second UE;

the processor is specifically configured to select, according to the scheduling information of the second UE, to send data to the first UE according to the first type of channel quality or the second type of channel quality.

Optionally, the processor is specifically configured to, if the second UE sends data when the sending end sends data to the first UE, determine, according to the second type of channel quality, a modulation and coding strategy to send data to the first UE; or,

and if the second UE does not send data when the sending end sends data to the first UE, determining a modulation and coding strategy according to the first type of channel quality to send data to the first UE.

Optionally, the processor is specifically configured to receive scheduling information of the second UE sent by a serving base station of the second UE.

Optionally, the sending end is a serving base station of the first UE;

the processor is further configured to send, to the first UE through a network interface, reference signal information of the second UE, where the reference signal information of the second UE is used for the first UE to receive the second reference signal according to the reference signal information of the second UE.

Optionally, the sending end is a serving base station of the first UE;

the processor is further configured to send a notification reporting two types of channel qualities to the first UE through a network interface, where the notification is used to instruct the first UE to send the first type of channel quality and the second type of channel quality to the sending end.

As can be seen from the above technical solutions provided in the embodiments of the present invention, by receiving a first type of channel quality determined according to a first reference signal of a transmitting end and a second type of channel quality determined according to the first reference signal and a second reference signal sent by a neighboring UE, which are sent by a first UE, the embodiments of the present invention can send data to the first UE according to an accurate channel quality, thereby improving transmission quality.

It should be understood that, in the embodiment of the present invention, the term "and/or" is only one kind of association relation describing an associated object, and means that three kinds of relations may exist. For example, a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of measuring channel quality, comprising:

a first User Equipment (UE) receives a first reference signal sent by a sending end;

the first UE determines second-type channel quality of a channel from the transmitting end to the first UE according to the first reference signal and the second reference signal, wherein the second-type channel quality represents the channel quality of the channel from the transmitting end to the first UE when the second UE is used as an interference source;

2. The method of claim 1, wherein before the first UE receives a second reference signal transmitted by a second UE, the method further comprises:

the first UE acquires reference signal information of the second UE;

and the first UE receives the second reference signal according to the reference signal information of the second UE.

3. The method of claim 2, wherein the first UE receives the second reference signal according to the reference signal information of the second UE, comprising:

the first UE determines a second type of channel quality of a channel from the transmitting end to the first UE according to the first reference signal and the second reference signal, and the method comprises the following steps:

and the first UE determines the second type of channel quality of a channel from the transmitting end to the first UE on the sub-band at the transmitting moment according to the first reference signal and the second reference signal.

4. The method of claim 2 or 3, wherein the obtaining, by the first UE, the reference signal information of the second UE comprises:

5. The method of any of claims 1-4, wherein before the first UE receives a second reference signal transmitted by a second UE, the method further comprises:

and the first UE receives a notification of reporting two types of channel quality sent by a base station, wherein the notification is used for indicating the first UE to send the first type of channel quality and the second type of channel quality to the sending end.

6. A method of measuring channel quality, comprising:

a sending end sends a first reference signal to first User Equipment (UE);

7. The method of claim 6, wherein before the transmitting end transmits data to the first UE according to the first type of channel quality or the second type of channel quality, the method further comprises:

the sending end obtains the scheduling information of the second UE;

the sending end sends data to the first UE according to the first type of channel quality or the second type of channel quality, and the sending end comprises the following steps:

8. The method of claim 7, wherein the selecting, by the sending end, to send data to the first UE according to the first type of channel quality or the second type of channel quality according to the scheduling information of the second UE comprises:

and if the second UE does not send data when the sending end sends data to the first UE, the sending end determines a modulation and coding strategy to send data to the first UE according to the first type of channel quality.

9. The method according to claim 7 or 8, wherein the acquiring, by the transmitting end, the scheduling information of the second UE comprises:

and the sending end receives the scheduling information of the second UE sent by the service base station of the second UE.

10. The method according to any of claims 6 to 9, wherein the transmitting end is a serving base station of the first UE;

the method further comprises the following steps:

11. The method according to any of claims 6 to 10, wherein the transmitting end is a serving base station of the first UE;

the method further comprises the following steps:

and the sending end sends a notification for reporting two types of channel quality to the first UE, wherein the notification is used for indicating the first UE to send the first type of channel quality and the second type of channel quality to the sending end.

12. A User Equipment (UE), comprising:

a sending module, configured to send the first type of channel quality and the second type of channel quality to the sending end.

13. The UE of claim 12, wherein the UE further comprises:

14. The UE of claim 13, wherein the receiving module is specifically configured to receive, according to the reference signal information of the second UE, the second reference signal on a subband corresponding to the second reference signal at the time of transmitting the second reference signal;

the determining module is specifically configured to determine, according to the first reference signal and the second reference signal, the second type of channel quality of a channel from the transmitting end to the UE on the sub-band at the transmitting time.

15. The UE of claim 13 or 14, wherein the receiving module is further configured to receive reference signal information of the second UE sent by a base station;

16. The UE according to any one of claims 12 to 15, wherein the receiving module is further configured to receive a notification sent by a base station to report two types of channel qualities, and the notification is used to instruct the UE to send the first type of channel quality and the second type of channel quality to the sending end.

17. A transmitting end, comprising:

a receiving module, configured to receive a first type of channel quality and a second type of channel quality of a channel from the sending end to the first UE, where the first type of channel quality is determined by the first UE according to the first reference signal, the second type of channel quality is determined by the first UE according to the first reference signal and the second reference signal, the second reference signal is sent by a second UE, the second UE is a UE adjacent to the first UE, and the second type of channel quality indicates a channel quality of a channel from the sending end to the first UE when the second UE is used as an interference source;

18. The transmitter according to claim 17, wherein the transmitter further comprises:

the sending module is specifically configured to select, according to the scheduling information of the second UE, to send data to the first UE according to the first type of channel quality or the second type of channel quality.

19. The transmitting end according to claim 18, wherein the transmitting module is specifically configured to,

20. The transmitting end according to claim 18 or 19, wherein the receiving module is further configured to receive scheduling information of the second UE sent by a serving base station of the second UE;

21. The transmitting end according to any of claims 17 to 20, wherein the transmitting end is a serving base station of the first UE;

the sending module is further configured to send reference signal information of the second UE to the first UE, where the reference signal information of the second UE is used for the first UE to receive the second reference signal according to the reference signal information of the second UE.

22. The transmitting end according to any of claims 17 to 21, wherein the transmitting end is a serving base station of the first UE;