WO2014110766A1

WO2014110766A1 - Method for measuring channel quality, user equipment, and base station

Info

Publication number: WO2014110766A1
Application number: PCT/CN2013/070623
Authority: WO
Inventors: 李宏超; 周华; 吴建明
Original assignee: 富士通株式会社
Priority date: 2013-01-17
Filing date: 2013-01-17
Publication date: 2014-07-24
Also published as: CN104854808A

Abstract

Embodiments of the present invention provide a method for measuring channel quality, a user equipment, and a base station. The measuring method comprises: a user equipment measuring signals and noises from another user equipment on a preset resource; and reporting a measurement result to a base station. The embodiments of the present invention can meet requirements of different scenarios.

Description

Channel quality measurement method, user equipment, and base station

The present invention relates to the field of communications, and in particular, to a channel quality measurement method, a user equipment, and a base station. The device-to-device (D2D) communication refers to direct communication between user equipments (UEs), which can effectively improve the spectrum efficiency of the wireless system and reduce the control signaling overhead.

Through the discovery mechanism, the user equipment UE1 and the user equipment UE2 report potential UEs that can perform D2D communication with themselves. According to the reported result, when the network side knows that the channel condition between UE1 and UE2 is suitable for D2D mode communication, the base station can configure UE1 and UE2 to perform direct data transmission without passing through the core network. The control signaling supporting D2D communication is still sent by the eNB.

On the other hand, in order to improve the cell coverage and user experience under the LTE-A (long term evaluation advanced) system, and improve the throughput of the system and the data transmission rate of the user, a plurality of small cell (small cell) dense deployment scenarios, And the transmission/reception technology compatible with it will be introduced. This technology can enhance the coverage of the network, improve the reuse rate of resources and system throughput, and control the total energy consumption of the access network based on a certain network capacity.

However, the inventors have found that in the existing scheme, the measurement of the channel quality is generally performed between the user equipment and the base station. For the scenario of the D2D or the small cell, the existing measurement scheme cannot obtain a better effect.

It should be noted that the above description of the technical background is only for the purpose of facilitating the clear and complete description of the technical solutions of the present invention, and is convenient for understanding by those skilled in the art. The above technical solutions are not considered to be well known to those skilled in the art simply because these aspects are set forth in the background section of the present invention. Summary of the invention

Embodiments of the present invention provide a channel quality measurement method, a user equipment, and a base station. The purpose is to perform signal measurement between the user equipment and the user equipment, or between the base station and the base station, thereby meeting different scenarios.

According to an aspect of the embodiments of the present invention, a channel quality measurement method is provided, where the measurement method includes:

The user equipment measures signals and noise from other user equipment on predetermined resources;

The result of the measurement is reported to the base station serving the user equipment.

According to another aspect of the embodiments of the present invention, a channel quality measurement method is provided, where the measurement method includes:

Receiving, by the base station, a measurement result sent by the user equipment, where the measurement result is obtained by the user equipment measuring a signal from other user equipment and noise on a predetermined resource;

The user equipment is configured according to the measurement result.

The base station measures signals and noise from other base stations on predetermined resources. According to another aspect of the embodiments of the present invention, a user equipment is provided, where the user equipment includes:

a measuring unit that measures signals and noise from other user equipment on predetermined resources;

The reporting unit reports the measured result to the base station.

According to another aspect of the present invention, a base station is provided, where the base station includes: a receiving unit, receiving a measurement result sent by a user equipment, where the measurement result is used by the user equipment on a predetermined resource from another user. Obtained by measuring the signal and noise of the device;

The first configuration unit configures the user equipment according to the measurement result.

According to another aspect of the embodiments of the present invention, a base station is provided, where the base station includes: a measurement unit that performs signals on other predetermined base stations on a predetermined resource, and noise, in accordance with another aspect of an embodiment of the present invention, a communication system including the user equipment as described above, and as described above Base station.

According to still another aspect of the embodiments of the present invention, a computer readable program is provided, wherein when the program is executed in a user equipment, the program causes a computer to execute a channel as described in the above embodiment in the user equipment Quality measurement method.

According to still another aspect of an embodiment of the present invention, a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a channel quality measuring method as described in the above embodiments in a user equipment.

According to still another aspect of an embodiment of the present invention, a computer readable program is provided, wherein when the program is executed in a base station, the program causes a computer to perform channel quality measurement as described in the above embodiment in the base station method.

According to still another aspect of an embodiment of the present invention, a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a channel quality measuring method as described in the above embodiments in a base station.

The beneficial effects of the embodiments of the present invention are that channel quality measurement is performed by signals between user equipments or between base stations, which can meet different scenarios.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings. It should be understood that the embodiments of the invention are not limited in scope. The embodiments of the present invention include many variations, modifications, and equivalents within the scope of the appended claims.

Features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, in combination with, or in place of, features in other embodiments. .

It should be emphasized that the term "comprising" or "comprising", when used herein, refers to the presence of a feature, component, step or component, but does not exclude the presence or addition of one or more other features, components, steps or components. DRAWINGS Many aspects of the invention can be better understood with reference to the following drawings. The components in the figures are not drawn to scale, but only to illustrate the principles of the invention. In order to facilitate the illustration and description of some parts of the invention, the corresponding parts in the figures may be enlarged or reduced.

Elements and features described in one of the figures or an embodiment of the invention may be combined with elements and features illustrated in one or more other figures or embodiments. In the accompanying drawings, like reference numerals refer to the

1 is a flowchart of a channel quality measurement method according to Embodiment 1 of the present invention;

2 is a schematic flow chart of D2D discovery according to Embodiment 1 of the present invention;

3 is a schematic diagram of a scenario of D2D discovery according to Embodiment 1 of the present invention;

4 is a schematic diagram of orthogonal resources according to Embodiment 1 of the present invention;

FIG. 5 is a schematic flowchart of radio resource management according to Embodiment 1 of the present invention; FIG.

FIG. 6 is a schematic diagram of another process of the radio resource management according to Embodiment 1 of the present invention; FIG. 7 is a schematic diagram of a D2D connection according to Embodiment 1 of the present invention;

8 is a flowchart of a channel quality measurement method according to Embodiment 2 of the present invention;

9 is a flowchart of a channel quality measurement method according to Embodiment 3 of the present invention;

FIG. 10 is a schematic structural diagram of a user equipment according to Embodiment 4 of the present invention; FIG.

11 is another schematic structural diagram of a user equipment according to Embodiment 4 of the present invention;

FIG. 12 is a schematic diagram of another configuration of a user equipment according to Embodiment 4 of the present invention; FIG.

13 is a schematic diagram of another configuration of a user equipment according to Embodiment 4 of the present invention;

14 is a schematic diagram of another configuration of a user equipment according to Embodiment 4 of the present invention;

Figure 15 is a block diagram showing the structure of a base station according to Embodiment 5 of the present invention;

Figure 16 is a block diagram showing the configuration of a base station according to a sixth embodiment of the present invention.

detailed description

The foregoing and other features of the invention will be apparent from the The specific embodiments of the present invention are disclosed in the specification and the drawings, which are illustrated in the embodiments of the invention The invention includes all modifications, variations and equivalents falling within the scope of the appended claims. In this embodiment, device-to-device communication (also referred to as peer-to-peer communication, or D2D communication) is a more direct form of interaction and communication between user devices. Without the support of a network-side infrastructure, D2D is more like an ad hoc network.

If there is network side support, such as D2D integration into the cellular communication network, then at least the following benefits and applications: D2D discovery (discovery) can serve the application of neighboring devices, this feature of neighboring users can serve For a variety of business applications. D2D communication can be used when neighboring users have communication requirements. This communication method can increase system throughput, reduce user power consumption, and reduce load off from the eNodeB side. ₀ Use D2D as a relay. Technology, enhanced cell coverage. In D2D discovery and D2D communication, UE-side measurements can provide the necessary information for user discovery and maintenance of communication connections (eg, setup, suspension, etc.).

On the other hand, in order to improve the cell coverage and user experience in the LTE-A system, and improve the throughput of the system and the data transmission rate of the user, a plurality of small cell (small cell:) dense deployment scenarios can be introduced, and Compatible transmission/reception technology. This technology can enhance the coverage of the network, improve the reuse rate of resources and system throughput, and control the total energy consumption of the access network based on a certain network capacity.

By using low-power nodes such as Pico eNodeB, RRH (Remote Radio Head) and Home eNodeB, small cells and small cell clusters can be deployed according to the needs of operators and the regional characteristics of services. In order to adapt the air interface and access network technologies to this channel condition and environmental characteristics, some new functions and features will be introduced.

The embodiment of the present invention provides a corresponding measurement method for the above two scenarios, and the scenario 1 (D2D) can be applied to the terminal, that is, between the user equipments. For scenario 2 (small cell) can be applied between terminals or between base stations. However, the present invention is not limited thereto, and a specific application scenario may be determined according to actual conditions. Example 1

A channel quality measurement method is applied to a user equipment side according to an embodiment of the present invention. 1 is a flowchart of a channel quality measurement method according to an embodiment of the present invention; as shown in FIG. 1, the channel quality measurement method includes:

Step 101: A user equipment signals signals from other user equipments on a predetermined resource, and Noise is measured;

Step 102: The user equipment reports the measured result to the base station serving the user equipment. In this embodiment, the user equipment may receive the transmitted signal of other user equipment, and may perform channel quality measurement on a predetermined resource; and may also measure the received signal and the received noise (eg, interference signal). . The noise can be from other user equipment or from other equipment such as base stations.

In this embodiment, the predetermined resource may be: one of a time-frequency resource, a reference symbol, and a spreading code sequence, or a combination thereof. It can be one of them, or it can be more than one of them; specific resources can be determined according to actual conditions.

The predetermined resource may be configured by the base station side or may be predetermined. Receive power measurements or interference measurements may be performed on certain time-frequency resources, reference symbols, and/or spreading code sequences.

Taking the D2D scenario as an example, for the D2D application scenario, the resource corresponding to the measurement should be based on the uplink resource of the cellular communication system to which the user equipment belongs, and is based on D2D discovery, and/or D2D communication (D2D communication). The time-frequency resources used in the phase; the despreading code or reference symbol sequence and the time-frequency position used in the measurement may also be specified.

In this embodiment, the signal and noise of other user equipments in the vicinity are measured in step 101, which may specifically include: a received power of the signal, or a ratio of received power of the signal to thermal noise, or reception of the signal. The ratio of the sum of power and thermal noise to thermal noise, or the interference power of the signal, or the ratio of the interference power of the signal to the thermal noise, or the ratio of the sum of the interference power and thermal noise of the signal to the thermal noise.

Specifically, the measured amount may be the power of the received signal, the ratio of the received signal power to the thermal noise, the interference power, or the ratio of the interference power to the thermal noise; however, the present invention is not limited thereto.

For example, a linear average I of all received powers is measured on a particular uplink resource of the cellular network; or a ratio of received power average I and thermal noise N, say I/N or (I+N)/N. The measured power value or interference value can be used as part of the measurement, say S/(I+N) _; where S can be the received power of a reference symbol or the received signal strength. Although specific measurement values have been exemplified above, the present invention is not limited thereto. In this embodiment, for the application scenario of the D2D, when the D2D communication or the discovery signaling/RS/Beacon performs the channel quality measurement in the uplink resource, the user may further perform the following processing according to the measurement result: Proximity discovery, Radio Resource Management (RRM), Channel State Information (CSI), and power control.

In one embodiment, the user equipment performs D2D discovery using the measured results, and the determination can be made on the user equipment side. Fig. 2 is a flow chart showing the D2D discovery of the embodiment of the present invention. As shown in Figure 2, the method includes:

Step 201: The user equipment measures signals and noises from other user equipments on predetermined resources.

Step 202: The user equipment determines whether the measurement result value is greater than a preset threshold; if yes, executing step 203; otherwise, the current D2D discovery process;

Step 203: Determine that other user equipments are located nearby to implement D2D discovery.

In a specific implementation, for example, if one or more of the following conditions are met, it may be determined that there is an adjacent user equipment:

I > Threshold;

I/N > Threshold;

(I+N)/N > Threshold.

Threshold represents a preset threshold. When the measured value exceeds this threshold, it can be judged that there is a neighboring user equipment.

Step 204: The user equipment reports the result of the D2D discovery to the base station.

FIG. 3 is a schematic diagram of a scenario of D2D discovery according to an embodiment of the present invention. As shown in Figure 3, UE1 and UE2 need to transmit high-power signals to compensate for large channel loss (Pass Loss). UE2 received

After the signals of UE1 and UE3, the channel quality measurement can be performed, and the D2D discovery judgment is performed according to the measured result.

In this embodiment, the predetermined resource is an orthogonal resource configured by the base station; and, the user equipment measures the signal from the other user equipment according to the orthogonal resource. Before the measurement, the base station side can also perform orthogonal resource configuration on different user equipments to achieve better detection results. 4 is a schematic diagram of orthogonal resources in an embodiment of the present invention. As shown in FIG. 4, the configuration of resources may include resource configurations such as a time-frequency domain, a reference symbol port, or a different code sequence. The orthogonal resources may be one or more, and the base station side may allocate the foregoing resource configuration to different user equipments, or user groups, so that the configured user equipment or user group sends signals according to the resources allocated as shown in FIG. 4.

In the present embodiment, the determination of the D2D discovery can also be performed by the base station side. When performing channel quality measurement, the user equipment can report the measured value and the resources associated with it (for example, on which resources) to the base station. Based on the resource configuration information previously sent to the user equipment, the base station side can determine which neighboring user equipments exist in the vicinity of the reported user equipment.

In another embodiment, the user equipment uses the results of the measurements to reflect the channel quality of the D2D connection for DRM of the D2D. Specifically, after the user equipment performs channel quality measurement, the measurement result can reflect the channel quality of the D2D connection. The measurement results can be directly indicated as channel quality or as part of calculating channel quality.

In this embodiment, during the initial establishment phase of the connection, the channel quality can be used as a basis for establishing a D2D connection. FIG. 5 is a schematic flow chart of radio resource management according to an embodiment of the present invention. As shown in Figure 5, the method includes:

Step 501: The user equipment measures signals and noises from other user equipments on predetermined resources.

Step 502: The user equipment determines whether the measurement result value is greater than a preset threshold, or is greater than a channel quality value of a cellular connection between the user equipment and the base station; if yes, executing step 503, if not, performing step 504.

Step 503: Determine a D2D connection between the user equipment and other user equipments.

In a specific implementation, for example, if one or more of the following conditions are met, a D2D connection can be performed:

Where Q _D represents the measured result value or the channel quality value calculated by the measurement; Q _C represents the cellular connection link quality value of the cellular communication; Q _T is a preset threshold value of the link quality.

Step 504: Determine that no D2D connection is performed between the user equipment and other user equipments. Step 505: The user equipment sends the connection information to the base station.

In this embodiment, after the D2D link is established, the link quality of the D2D may change with time, so the above measurement or the channel quality calculated by the measurement may be used as between the D2D connection and the cellular communication connection. The parameters of the switch.

FIG. 6 is another schematic flowchart of radio resource management according to an embodiment of the present invention. As shown in Figure 6, the method includes:

Step 601: The user equipment measures signals and noises from other user equipments on predetermined resources.

Step 602: The user equipment determines whether the measurement result value is less than a preset threshold, or is smaller than a channel quality value of a cellular connection between the user equipment and the base station; if yes, executing step 603, if not, performing step 604.

Step 603: Determine that the user equipment switches from the D2D connection to the cellular connection.

In a specific implementation, for example, if one or more of the following conditions are met, the D2D link can be switched to the cellular link:

Where Q _D represents the above measurement, or the channel quality calculated from the measured quantity; Q _C represents the link quality of the cellular communication; Q _T is a preset threshold value of the link quality.

Step 604: Determine that the user equipment does not switch from the D2D connection to the cellular connection.

Step 605: The user equipment sends the connection information to the base station.

In the present embodiment, the determination of the D2D connection or handover can also be performed by the base station side. After the channel quality measurement is performed, the user equipment can report the measured value to the base station. The base station side judges the D2D connection or the D2D switch based on the measurement result.

FIG. 7 is a schematic diagram of a scenario of a D2D connection according to an embodiment of the present invention. As shown in FIG. 7, UE1 and UE2 perform D2D communication, and UE3 needs to transmit a high-power signal to compensate for large channel loss (Pass Loss). After receiving the signals of UE1 and UE3, UE2 may perform channel quality measurement, and perform D2D connection or D2D handover determination according to the measurement result.

In another embodiment, the user equipment adjusts the Modulation and Coding Schemes (MCS) level or the transmission mode used according to the result of the measurement to adapt to changes in the channel. Specifically, using the measurement as described above, the user can adjust the MCS level used to adapt to the channel change, or the user reports the measurement value to the base station, and the base station adjusts the MCS level used for D2D communication.

Similarly, the user can adjust the transmission mode used to adapt to the channel change, or the user reports the measurement value to the base station, and the base station adjusts the transmission mode used by the D2D.

In another embodiment, the user equipment performs power control based on the results of the measurements. Specifically, in D2D communication, power control (Power Control) is indispensable. In closed loop or open loop power control, the above measurement results can be used as input parameters for calculating the transmit power of D2D communication. One of the principles can be: The transmit power or target receive power should be proportional to the measured interference value, and / or proportional to the set target power value. For example, the D2D target receive power can be calculated as follows:

Po = (I+N)* SINR— target

Where Po is the target received power of D2D communication, (I+N) can be obtained by measurement, and SINR_target is the set target signal-to-noise ratio. The transmit power and the target receive power should be proportional.

In this embodiment, the base station side needs to configure a corresponding measurement object, event, and time period for the D2D user equipment (for example, a measurement gap; that is, the user can only perform this measurement for a specific period of time if necessary).

If the measurements are made on a particular resource as described above, and/or some reference symbols are involved, the base station side needs to configure (interfere) the measurement resources and/or reference symbols to the user. When D2D communication and cellular communication share resources, the measurement needs to be performed on the uplink time slot or the uplink frequency band of the cellular communication system; when D2D communication and cellular communication use their respective independent resources, the measurement resource does not have this limitation.

It can be seen from the foregoing embodiment that the user equipment can measure signals and noises from other user equipments on predetermined resources, and can perform processes such as D2D discovery, RRM measurement, CSI measurement, and power control, thereby satisfying different scenarios. . Example 2

A channel quality measurement method is applied to the base station side in the embodiment of the present invention, and the same content as that on the user equipment side in Embodiment 1 is not described herein. FIG. 8 is a flowchart of a channel quality measurement method according to an embodiment of the present invention; as shown in FIG. 8, the channel quality measurement method includes:

Step 801: The base station receives a measurement result sent by the user equipment, where the measurement result is obtained by measuring, by the user equipment, a signal and noise from other user equipment on a predetermined resource;

Step 802: Configure the user equipment according to the measurement result.

In a specific implementation, the predetermined resource may be: one or a combination of time-frequency resources, reference symbols, and spreading code sequences configured or predetermined by the base station side. However, the present invention is not limited thereto, and a specific embodiment may be determined according to actual conditions.

In an embodiment, configuring the user equipment according to the measurement result in step 802 may specifically include: performing D2D discovery processing on the user equipment. The judgment can be made on the base station side.

Specifically, the base station may determine whether the measurement result is greater than a preset threshold; and, when the threshold is greater than a preset threshold, perform D2D discovery processing on the user equipment.

Further, the base station can configure orthogonal resources for the user equipment and other user equipments before the user equipment performs measurements. Thereby, a better detection effect can be obtained.

In another embodiment, the user equipment is configured according to the measurement result in step 802, and specifically, the method includes: the base station performs D2D radio resource management on the user equipment by using the measurement result.

Specifically, the base station may determine whether the measurement result value is greater than a preset threshold, or is greater than a channel quality value of a cellular connection between the user equipment and the base station; and when the determination result is greater than, the user equipment performs a D2D connection with other user equipments.

Specifically, the base station may determine whether the measurement result value is less than a preset threshold, or is smaller than a channel quality value of the cellular connection between the user equipment and the base station; when the judgment result is less than, the user equipment is switched from the D2D connection to the cellular connection.

In another embodiment, the user equipment is configured according to the measurement result in step 802, and specifically includes: the base station adjusts the MCS level or the transmission mode used by the D2D according to the measurement result.

In another embodiment, configuring the user equipment according to the measurement result in step 802 may include: performing, by the base station, power control on the user equipment according to the measurement result. It can be seen from the foregoing embodiment that the user equipment can measure signals and noises from other user equipments on predetermined resources, and can perform processes such as D2D discovery, RRM measurement, CSI measurement, and power control, thereby satisfying different scenarios. . Example 3

A channel quality measurement method is applied to a base station side according to an embodiment of the present invention. 9 is a flowchart of a channel quality measurement method according to an embodiment of the present invention; as shown in FIG. 9, the channel quality measurement method includes:

Step 901: The base station performs signal and noise from other base stations on a predetermined resource. In this embodiment, the signals from other base stations may include: a component carrier used by the neighboring base station, or a component carrier that is blindly detected.

In this embodiment, the method may further include: performing, by the base station, the discovery of the neighboring cell according to the measured result, or acquiring resource usage information of the neighboring cell, or performing radio resource management.

Specifically, the foregoing measurement may be used to serve the discovery of the cell, obtain the resource usage of the neighboring cell, and determine the RRM of the cell, including resource allocation and traffic offloading.

As can be seen from the above embodiments, the base station can measure signals and other noises from other base stations on predetermined resources, and can perform processing such as cell discovery and RRM measurement, thereby satisfying different scenarios. Example 4

The embodiment of the present invention provides a user equipment, which corresponds to the method on the user equipment side in Embodiment 1, and the same content is not described herein.

FIG. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 10, the user equipment 1000 includes a measurement unit 1001 and a reporting unit 1002. For other parts of the user equipment 1000, reference may be made to the prior art, and details are not described herein again.

The measuring unit 1001 measures signals and noises from other user equipments on a predetermined resource; the reporting unit 1002 reports the measured result to the base station.

FIG. 11 is another schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in Figure 11, The user equipment 1100 includes a measurement unit 1001 and a reporting unit 1002, as described above.

As shown in FIG. 11, the user equipment 1100 may further include: a discovery unit 1103, performing device-to-device discovery using the measured result.

Specifically, the discovery unit 1103 may include: a first determination unit and a first determination unit. The first determining unit is configured to determine whether the measured result value is greater than a preset threshold. The first determining unit is configured to determine that other user equipments are located nearby to achieve D2D discovery when the threshold is greater than a preset threshold.

In addition, in the present embodiment, the reporting unit 1002 may report the D2D discovery information determined by the discovery unit 1103 to the base station.

In this embodiment, the predetermined resource may be an orthogonal resource configured by the base station; and, the measuring unit 1001 may measure the signal from other user equipments and the noise according to the orthogonal resource.

FIG. 12 is another schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 12, the user equipment 1200 includes a measurement unit 1001 and a reporting unit 1002, as described above.

As shown in FIG. 12, the user equipment 1200 may further include: a management unit 1203, which uses the measured result to reflect the channel quality of the D2D connection, and performs radio resource management of the D2D.

Specifically, the management unit 1203 may include: a second determining unit and a second determining unit, where the second determining unit is configured to determine whether the measured result value is greater than a preset threshold, or a channel quality of a cellular connection between the user equipment and the base station The second determining unit is configured to determine, when the determination result is greater than, perform a D2D connection between the user equipment and other user equipments.

Specifically, the management unit 1203 may include: a third determining unit and a third determining unit, where the third determining unit is configured to determine whether the measured result value is less than a preset threshold, or a channel quality of a cellular connection between the user equipment and the base station The third determining unit is configured to determine that the user equipment switches from the D2D connection to the cellular connection when the determination result is less than.

In addition, in the present embodiment, the reporting unit 1002 may report the D2D connection information or the handover information determined by the management unit 1203 to the base station.

FIG. 13 is another schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 13, the user equipment 1300 includes a measuring unit 1001 and a reporting unit 1002, as described above.

As shown in FIG. 13, the user equipment 1300 may further include: an adjusting unit 1303, which adjusts the MCS level or the used transmission mode according to the result of the measurement to adapt to the change of the channel.

FIG. 14 is another schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in Figure 14, The user equipment 1400 includes a measurement unit 1001 and a reporting unit 1002, as described above.

As shown in FIG. 14, the user equipment 1400 may further include: a control unit 1403 that performs power control according to the result of the measurement.

It is to be noted that FIGS. 11 to 14 only show the case where one of the discovery unit 1103, the management unit 1203, the adjustment unit 1303, and the control unit 1403 is separately included, but the present invention is not limited thereto, and may further include the above unit. Various combinations can be determined according to actual conditions.

It can be seen from the foregoing embodiment that the user equipment can measure signals and noises from other user equipments on predetermined resources, and can perform processes such as D2D discovery, RRM measurement, CSI measurement, and power control, thereby satisfying different scenarios. . Example 5

The embodiment of the present invention provides a base station, which corresponds to the method of the base station side in Embodiment 2, and the same content is not described herein again.

FIG. 15 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 15, the base station 1500 includes a receiving unit 1501 and a first configuration unit 1502. Other parts of the base station 1500 can refer to the prior art, and details are not described herein again.

The receiving unit 1501 receives the measurement result sent by the user equipment, where the measurement result is obtained by the user equipment measuring the signal and the noise from the other user equipment on the predetermined resource; the first configuration unit 1502 performs the user equipment according to the measurement result. Configuration.

In an embodiment, the first configuration unit 1502 is specifically configured to: perform D2D discovery processing on the user equipment.

Specifically, the first configuration unit 1502 may include: a fourth determining unit and a first processing unit. The fourth determining unit is configured to determine whether the measurement result is greater than a preset threshold; when the first processing unit is greater than the preset threshold, performing D2D discovery processing on the user equipment.

In this embodiment, the base station 1500 may further include: a second configuration unit; configured orthogonal resources for the user equipment and other user equipments. The user equipment is caused to measure signals of other user equipment according to orthogonal resources.

In another embodiment, the first configuration unit 1502 is specifically configured to: perform D2D radio resource management on the user equipment by using the measurement result. Specifically, the first configuration unit 1502 may include: a fifth determining unit and a second processing unit. The fifth determining unit is configured to determine whether the measured result value is greater than a preset threshold, or a channel quality value of a cellular connection between the user equipment and the base station; and when the determining result is greater than the user equipment and other users, the second processing unit The device performs a D2D connection.

Specifically, the first configuration unit 1502 may include: a sixth determining unit and a third processing unit. The sixth determining unit is configured to determine whether the measured result value is less than a preset threshold, or a channel quality value of a cellular connection between the user equipment and the base station; and the third processing unit connects the user equipment from the D2D when the determination result is less than Switch to the cellular connection.

In another embodiment, the first configuration unit 1502 is specifically configured to: adjust an MCS level or a transmission mode used by the D2D according to the measurement result.

In another embodiment, the first configuration unit 1502 is specifically configured to: perform power control on the user equipment according to the measurement result.

It can be seen from the foregoing embodiment that the user equipment can measure signals and noises from other user equipments on predetermined resources, and can perform processes such as D2D discovery, RRM measurement, CSI measurement, and power control, thereby satisfying different scenarios. . Example 6

The embodiment of the present invention provides a base station, which corresponds to the method of the base station side in Embodiment 3, and the same content is not described herein again.

FIG. 16 is a schematic diagram of a structure of a base station according to an embodiment of the present invention. As shown in FIG. 16, the base station 1600 includes: a measuring unit 1601. Other parts of the base station 1600 can refer to the prior art, and details are not described herein again.

The measuring unit 1601 measures signals and noises from other base stations on predetermined resources.

In this embodiment, the base station 1600 may further include: a processing unit, performing discovery of the neighboring cell according to the measurement result, or acquiring resource usage information of the neighboring cell, or performing radio resource management.

It can be seen from the above embodiments that the base station can measure the signals and noises from other base stations on the predetermined resources, and can perform processes such as cell discovery and RRM measurement, thereby satisfying different scenarios. The embodiment of the present invention further provides a communication system, which includes the user equipment as described in Embodiment 4 and the base station as described in Embodiment 5; or the communication system includes the base station as described in Embodiment 6.

The embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a user equipment, the program causes a computer to perform a channel quality measurement method as described in Embodiment 1 above in the user.

An embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform the channel quality measurement method described in Embodiment 1 above in a user equipment.

The embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a base station, the program causes a computer to perform a channel quality measurement method as described in Embodiment 2 or 3 above in the base station.

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform the channel quality measurement method described in Embodiment 2 or 3 above in a base station.

The above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software. The present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or a step. The present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein. An application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof. One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

The present invention has been described in connection with the specific embodiments thereof, and it should be understood by those skilled in the art that these descriptions are illustrative and not restrictive. A person skilled in the art can make various modifications and changes to the invention in accordance with the spirit and the principles of the invention, which are also within the scope of the invention.

Claims

claims

1. A channel quality measurement method, the measurement method includes:

User equipment measures signals and noise from other user equipment on predetermined resources;

The measurement results are reported to the base station serving the user equipment.

2. The method according to claim 1, wherein the predetermined resources are: one or a combination of time-frequency resources, reference symbols and spreading code sequences configured or predetermined by the base station side.

3. The method according to claim 1, wherein measuring signals and noise from other user equipment specifically includes:

The received power of the signal, or the ratio of the received power of the signal to thermal noise, or the ratio of the sum of the received power of the signal and thermal noise to the thermal noise, or the interference power of the signal, or the The ratio of the interference power of the signal to the thermal noise is measured, or the ratio of the sum of the interference power of the signal and the thermal noise to the thermal noise.

4. The method according to any one of claims 1 to 3, wherein the method further includes: the user equipment uses the measurement result to perform device-to-device discovery.

5. The method according to claim 4, wherein the method includes:

Determine whether the measurement result value is greater than the preset threshold;

When it is greater than the preset threshold, it is determined that the other user equipment is located nearby to implement device-to-device discovery.

6. The method according to claim 5, wherein the predetermined resources are orthogonal resources configured by the base station;

Furthermore, the user equipment measures signals and noise from other user equipment according to the orthogonal resources.

7. The method according to any one of claims 1 to 3, wherein the method further includes: the user equipment using the measurement result to reflect the channel quality of the device-to-device connection for device-to-device communication. Wireless resource management.

8. The method according to claim 7, wherein the method includes:

Determine whether the measurement result value is greater than a preset threshold, or whether the user equipment and the base station The channel quality value of the cellular connection between;

When the judgment result is greater than, it is determined that a device-to-device connection is made between the user equipment and the other user equipment.

9. The method according to claim 7, wherein the method further includes: determining whether the measurement result value is less than a preset threshold, or a channel quality value of the cellular connection between the user equipment and the base station;

When the judgment result is less than, it is determined that the user equipment switches from a device-to-device connection to a cellular connection.

10. The method according to any one of claims 1 to 3, wherein the method further includes: the user equipment adjusts the modulation and coding scheme level or the transmission mode used according to the measurement result to adapt to the channel. Variety.

11. The method according to any one of claims 1 to 3, wherein the method further includes: the user equipment performs power control according to the measurement result.

12. A channel quality measurement method, the measurement method includes:

The base station receives the measurement results sent by the user equipment, where the measurement results are obtained by the user equipment measuring signals and noise from other user equipment on predetermined resources;

The user equipment is configured according to the measurement results.

13. The method according to claim 12, wherein the predetermined resources are: one or a combination of time-frequency resources, reference symbols and spreading code sequences configured or predetermined by the base station side.

14. The method according to claim 12 or 13, wherein configuring the user equipment according to the measurement results specifically includes: performing device-to-device discovery processing on the user equipment.

15. The method according to claim 14, wherein the method further includes: determining whether the measurement result is greater than a preset threshold;

And, when the value is greater than a preset threshold, device-to-device discovery processing is performed on the user equipment.

16. The method according to claim 14, wherein the method further includes: the base station configuring orthogonal resources for the user equipment and the other user equipment.

17. The method according to claim 12 or 13, wherein configuring the user equipment according to the measurement results specifically includes: the base station using the measurement results to perform wireless device-to-device communication on the user equipment. Resource management.

18. The method according to claim 17, wherein the method includes:

Determine whether the measurement result value is greater than a preset threshold or the channel quality value of the cellular connection between the user equipment and the base station;

When the judgment result is greater than, perform a device-to-device connection between the user equipment and the other user equipment.

19. The method according to claim 17, wherein the method includes:

Determine whether the measurement result value is less than a preset threshold or the channel quality value of the cellular connection between the user equipment and the base station;

When the judgment result is less than, the user equipment is switched from a device-to-device connection to a cellular connection.

20. The method according to claim 12 or 13, wherein configuring the user equipment according to the measurement results specifically includes: the base station determines the modulation and coding scheme level used for device-to-device communication according to the measurement results. Or adjust the transmission mode.

21. The method according to claim 12 or 13, wherein configuring the user equipment according to the measurement results specifically includes: the base station performing power control on the user equipment according to the measurement results.

22. A channel quality measurement method, the measurement method includes:

The base station measures signals and noise from other base stations on predetermined resources. 23. The method according to claim 22, wherein the signals from other base stations include: component carriers used by neighboring base stations, or component carriers of blind detection.

24. The method according to claim 22 or 23, wherein the method further includes: the base station discovers neighboring cells according to the measurement results, or obtains resource usage information of neighboring cells, or performs radio resource management. .

25. A user equipment, the user equipment includes:

The measurement unit measures signals and noise from other user equipment on predetermined resources;

The reporting unit reports the measurement results to the base station.

26. The user equipment according to claim 25, wherein the user equipment further includes: a discovery unit that uses the measurement results to perform device-to-device discovery.

27. The user equipment according to claim 26, wherein the discovery unit includes: a first judgment unit that judges whether the measurement result value is greater than a preset threshold;

The first determination unit, when greater than the preset threshold, determines that the other user equipment is located nearby to implement device-to-device discovery.

28. The user equipment according to claim 27, wherein the predetermined resources are orthogonal resources configured by the base station;

Furthermore, the measurement unit measures signals and noise from other user equipments according to the orthogonal resources.

29. The user equipment according to claim 25, wherein the user equipment further includes: a management unit that uses the measurement results to reflect the channel quality of the device-to-device connection to perform wireless resource management of device-to-device communication. .

30. The user equipment according to claim 29, wherein the management unit includes: a second judgment unit to judge whether the measurement result value is greater than a preset threshold, or the cellular connection between the user equipment and the base station is Channel quality value;

The second determination unit determines that a device-to-device connection is made between the user equipment and the other user equipment when the judgment result is greater than.

31. The user equipment according to claim 29, wherein the management unit includes: a third judgment unit to judge whether the measurement result value is less than a preset threshold, or the cellular connection between the user equipment and the base station is Channel quality value;

The third determination unit determines that the user equipment switches from a device-to-device connection to a cellular connection when the judgment result is less than.

32. The user equipment according to claim 25, wherein the user equipment further includes: an adjustment unit that adjusts the modulation and coding scheme level or the used transmission mode according to the measurement results to adapt to changes in the channel.

33. The user equipment according to claim 25, wherein the user equipment further includes: a control unit configured to perform power control according to the measurement result.

34. A base station, the base station includes:

The receiving unit receives the measurement results sent by the user equipment, where the measurement results are generated by the user equipment. The user equipment is obtained by measuring signals and noise from other user equipment on predetermined resources;

35. The base station according to claim 34, wherein the first configuration unit is specifically configured to: perform device-to-device discovery processing on the user equipment.

36. The base station according to claim 35, wherein the first configuration unit includes: a fourth judgment unit that judges whether the measurement result is greater than a preset threshold;

The first processing unit performs device-to-device discovery processing on the user equipment when the value is greater than the preset threshold.

37. The base station according to claim 36, wherein the base station further includes: a second configuration unit configured to configure orthogonal resources for the user equipment and the other user equipment.

38. The base station according to claim 34, wherein the first configuration unit is specifically configured to: use the measurement results to perform wireless resource management for device-to-device communication on the user equipment.

39. The base station according to claim 38, wherein the first configuration unit includes: a fifth judgment unit to judge whether the measurement result value is greater than a preset threshold, or the cellular connection between the user equipment and the base station channel quality value;

The second processing unit, when the judgment result is greater than, performs a device-to-device connection between the user equipment and the other user equipment.

40. The base station according to claim 38, wherein the first configuration unit includes: a sixth judgment unit to judge whether the measurement result value is less than a preset threshold, or the cellular connection between the user equipment and the base station channel quality value;

The third processing unit, when the judgment result is less than, switches the user equipment from a device-to-device connection to a cellular connection.

41. The base station according to claim 34, wherein the first configuration unit is specifically configured to: adjust the modulation and coding scheme level or transmission mode used for device-to-device communication according to the measurement results.

42. The base station according to claim 34, wherein the first configuration unit is specifically configured to: perform power control on the user equipment according to the measurement results.

43. A base station, the base station includes: The measurement unit measures signals and noise from other base stations on predetermined resources.

44. The base station according to claim 43, wherein the base station further includes: a processing unit configured to discover neighboring cells, obtain resource usage information of neighboring cells, or perform wireless resource management according to the measurement results.

45. A communication system, the communication system including the user equipment according to any one of claims 25 to 33, and the base station according to any one of claims 34 to 42; or the communication system includes the user equipment according to any one of claims 34 to 42; A base station as claimed in claim 43 or 44.

46. A computer-readable program, wherein when the program is executed in the user equipment, the program causes the computer to perform the signal measurement method according to any one of claims 1 to 11 in the user equipment.

47. A storage medium storing a computer-readable program, wherein the computer-readable program causes the computer to execute the signal measurement method according to any one of claims 1 to 11 in the user equipment.

48. A computer-readable program, wherein when the program is executed in a base station, the program causes the computer to execute the signal measurement method according to any one of claims 12 to 24 in the base station.

49. A storage medium storing a computer-readable program, wherein the computer-readable program causes the computer to execute the signal according to any one of claims 12 to 24 in the base station