WO2016180077A1

WO2016180077A1 - Control method, terminal, base station and system for uplink power and computer storage medium

Info

Publication number: WO2016180077A1
Application number: PCT/CN2016/076332
Authority: WO
Inventors: 仲丽媛; 张晨晨; 赵亚军; 刘娟
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-05-14
Filing date: 2016-03-15
Publication date: 2016-11-17
Also published as: CN106304298A

Abstract

Disclosed are a control method, a UE, base station and method for uplink power and a computer storage medium. The method comprises: receiving indication information transmitted by a base station; selecting, according to the indication information transmitted by the base station, a power control mode; and calculating and adjusting transmitting power of a terminal UE according to at least one kind of the following information: the indication information received by the base station, maximum transmitting power of a UE, circular loss, an idle channel evaluation CCA measurement value and a power accumulation sum.

Description

Uplink power control method, terminal, base station and system, computer storage medium

Technical field

The present invention relates to a wireless communication technology, and in particular, to an uplink power control method, a terminal, a base station and a system, and a computer storage medium.

Background technique

In the evolution of Long Term Evolution (LTE) technology, the LTE Rel-13 version began to be researched in September 2014. One of the important contents is that the LTE system works with unlicensed carriers. This technology will enable LTE systems to use existing unlicensed carriers, greatly increasing the potential spectrum resources of LTE systems, enabling LTE systems to achieve lower spectrum costs.

However, LTE faces many problems when using unlicensed carriers for data transmission, some of which are as follows:

The uplink power control in the LTE/LTE-A system is mainly designed to reduce the interference between signals. Generally, it is calculated according to the open-loop closed-loop method. The uplink power control can satisfy the communication performance. In the unlicensed spectrum, in addition to the LTE/LTE-A system, there are other systems such as Wireless Fidelity (WiFi) and Radar (Radar). For fairness, each system needs to adopt the method of listening first. Obtain the resource, that is, listen to the channel before sending the data. When the intercepted interference is less than the threshold, the channel is considered to be idle, and the data can be sent at this time. If the intercepted interference is greater than the threshold, the channel is considered busy. When the data cannot be sent, the interference between the two is basically eliminated. If the uplink power control mode of the LTE/LTE-A system authorized carrier is adopted, the power resources will be wasted and the unlicensed carrier will be disabled. The uplink performance is limited, and the power control of the unlicensed spectrum must consider not only the communication performance, but also the detectable Clear Channel Assessment (CCA) threshold of the neighboring station. Otherwise, the neighboring station may consider the channel to be idle. Occupy the channel will lead The interference is caused, so the power control of the unlicensed spectrum is not as small as possible, and factors such as the CCA threshold need to be considered. There is no specific solution for the uplink power control method of the unlicensed carrier.

Summary of the invention

To solve the above technical problem, an embodiment of the present invention provides an uplink power control method, a terminal, a base station, a system, and a computer storage medium.

The uplink power control method provided by the embodiment of the present invention includes:

Receiving indication information sent by the base station;

Selecting a power control mode according to the indication information sent by the base station;

Calculating and adjusting the transmit power of the UE (User Equipment) according to at least one of the following information: the indication information received from the base station, the maximum transmit power of the UE, the path loss, the CCA measurement value, and the power accumulation sum.

In an embodiment of the present invention, the indication information includes at least one of the following: whether mode configuration signaling, power control mode indication signaling, or presence of CCA is performed in a licensed auxiliary access (LAA) The mode indication signaling, the power coefficient, the number of UEs to be instructed, the number of UEs to be scheduled, the number of UEs to be transmitted, and the number of UEs to be scheduled at the same time. .

In an embodiment of the invention, the selecting a power control mode according to the indication information sent by the base station includes:

When the mode configuration signaling of performing CCA in the LAA in the indication information indicates that CCA is performed in the LAA, selecting a power control mode on the unlicensed carrier;

When the mode configuration signaling of performing CCA in the LAA in the indication information indicates that CCA is not performed in the LAA, the power control mode in the Long Term Evolution LTE/LTE-A protocol is selected.

In an embodiment of the present invention, calculating the transmit power of the UE according to at least one of the following information includes: calculating a transmit power of the UE according to the following formula:

UE transmit power = maximum transmit power of the UE x power factor; or,

The transmit power of the UE = (the maximum transmit power of the UE / the number of RBs on the entire bandwidth) × the number of RBs occupied × the power factor; or

The transmit power of the UE = the maximum transmit power of the UE; or,

The transmit power of the UE = (the maximum transmit power of the UE / the number of RBs on the entire bandwidth) × the number of RBs occupied; or

The transmit power of the UE is the maximum transmit power of the UE/the number of UEs, where the number of UEs is the number of accessed UEs or the number of scheduled UEs or the number of simultaneously transmitted UEs.

In an embodiment of the present invention, the transmit power of the UE is adjusted according to at least one of the following information, including:

When the path loss is higher than the preset threshold, the current transmit power of the UE is increased;

When the CCA measurement value increases, the current transmit power of the UE is decreased; when the CCA measurement value decreases, the current transmit power of the UE is increased.

In an embodiment of the invention, the method further includes:

When the power of the entire bandwidth is accumulated and exceeds the maximum transmit power of the UE, the CCA threshold is adjusted or the transmit power is re-adjusted so that the power of the entire bandwidth is accumulated and does not exceed the maximum transmit power of the UE.

An uplink power control method provided by another embodiment of the present invention includes:

Sending indication information to the UE, so that the UE performs uplink power control according to the indication information;

The indication information includes at least one of the following information: whether to perform CCA mode configuration signaling, power control mode indication signaling, whether there are multiple UEs simultaneously transmitting mode indication signaling, power coefficient, and access in the LAA. The number of UEs indicates signaling, the number of scheduled UEs, the number of UEs that are simultaneously transmitted, and the number of UEs that are scheduled at one time.

In an embodiment of the invention, the sending the indication information to the UE includes:

Sending indication information to the UE through physical layer signaling; or

Sending indication information to the UE through high layer signaling; or

The occupancy signal carrying the indication information is sent to the UE on the unlicensed carrier.

In an embodiment of the present invention, multiple signalings in the indication information sent to the UE may be sent in the same or different manner.

The power factor is calculated based on at least one of the following information:

In an embodiment of the invention, the power coefficient is calculated according to at least one of the following information: the number of accessed UEs, the number of scheduled UEs, the number of UEs scheduled at one time, and the radio resources allocated by each UE. , path loss, CCA measurements, power accumulation over the entire bandwidth.

In an embodiment of the invention, the method further includes: allocating a transmit power spectrum to the UE according to a predetermined manner; or

When the non-resource multiplexing (non-reuse) mode is used for the entire bandwidth, the UE is allocated a transmission power spectrum higher than a predetermined value; when part-reuse mode scheduling is used, the non-reuse UE is allocated. A UE that is resource reused allocates a transmit power spectrum that is lower than a predetermined value for a transmit power spectrum that is higher than a predetermined value.

The UE provided by the embodiment of the present invention includes:

a receiving unit, configured to receive indication information sent by the base station;

The selecting unit is configured to select a power control mode according to the indication information sent by the base station;

The processing unit is configured to calculate and adjust a transmit power of the UE according to at least one of the following information: the indication information received from the base station, the maximum transmit power of the UE, the path loss, the CCA measurement value, and the power accumulation sum.

In an embodiment of the present invention, the indication information includes at least one of the following: an authorization to access the LAA, whether to perform mode configuration signaling of the CCA, power control mode indication signaling, whether multiple UEs are simultaneously transmitted. The mode indicates the signaling, the power coefficient, the number of UEs to be instructed, the number of UEs to be scheduled, the number of UEs to be transmitted, the number of UEs to be transmitted, and the number of UEs to be scheduled at one time.

In an embodiment of the invention, the selecting unit comprises:

a first selection sub-unit, configured to: when a mode configuration signaling of performing CCA in the LAA in the indication information indicates that CCA is performed in the LAA, selecting a power control mode on the unlicensed carrier;

And a second selection sub-unit configured to select a power control mode in the Long Term Evolution (LTE)-LTE-A protocol when the mode configuration signaling of the CCA in the indication information indicates that the CCA is not performed in the LAA.

In an embodiment of the invention, the processing unit includes:

The calculation subunit is configured to calculate the transmit power of the UE according to the following formula:

UE transmit power = maximum transmit power of the UE x power factor; or,

The transmit power of the UE = the maximum transmit power of the UE; or,

In an embodiment of the present invention, the processing unit includes: a control sub-unit configured to: when the path loss is higher than a preset threshold, increase a current transmit power of the UE; when the CCA measurement value increases, the current UE The transmit power is reduced; when the CCA measurement is decreased, the current transmit power of the UE is increased.

In an embodiment of the invention, the processing unit includes: an adjustment subunit configured to adjust a CCA threshold or re-adjust the transmit power when the power of the entire bandwidth is accumulated and exceeds a maximum transmit power of the UE, so that the power of the entire bandwidth is Accumulate and not exceed the maximum transmit power of the UE.

The base station provided by the embodiment of the present invention includes:

The sending unit is configured to send indication information to the UE, so that the UE performs uplink power control according to the indication information;

In an embodiment of the present invention, the sending unit is further configured to send the indication information to the UE by using physical layer signaling; or

Sending indication information to the UE through high layer signaling; or

In an embodiment of the present invention, the base station further includes: a control unit, which allocates a transmit power spectrum to the UE according to a predetermined manner; or, when the non-reuse mode is used for the entire bandwidth, allocates a transmit power higher than a predetermined value to the UE. Spectrum; when using the part-reuse mode scheduling, the non-reuse UE is allocated a transmission power spectrum higher than a predetermined value, and the UE of the reuse is allocated a transmission power spectrum lower than a predetermined value.

The unlicensed resource uplink power control system provided by the embodiment of the present invention includes:

The base station is configured to send indication information to the UE;

The UE is configured to receive the indication information sent by the base station, select a power control mode according to the indication information sent by the base station, and calculate and adjust the transmit power of the UE according to at least one of the following information: the indication information received from the base station, and the UE Maximum transmit power, path loss, idle channel evaluation CCA measurement, power accumulation and.

In an embodiment of the present invention, the base station is further configured to allocate a transmit power spectrum to the UE according to a predetermined manner; or, when the entire bandwidth is scheduled by a non-resource multiplexing (non-reuse) manner, the UE is allocated a higher than predetermined schedule. Transmit power spectrum of values; when part-reuse mode scheduling is used, a non-reuse UE is allocated a transmission power spectrum higher than a predetermined value, and a resource reuse (reuse) UE allocation is lower than a predetermined value. The emission power spectrum.

The computer storage medium provided by the embodiment of the present invention stores a computer program for executing the uplink power control method.

In the technical solution of the embodiment of the present invention, the base station sends the control information to the UE, where the control information includes at least one of the following information: whether the mode of the CCA is configured to perform the CCA mode configuration signaling, the power control mode indication signaling, Mode indication signaling, power coefficient, number of visited UEs indicating signaling, number of scheduled UE indication signaling, number of simultaneously transmitted UE indication signaling, and maximum number of scheduled UEs at a time number. The UE selects a corresponding power control mode according to the indication information of the base station, so as to adjust the power of the UE according to the corresponding power control mode. Specifically, the UE calculates and adjusts the transmit power of the terminal UE according to at least one of the following information: the indication information received from the base station, the maximum transmit power of the UE, the path loss, the idle channel assessment CCA measurement value, and the power accumulation sum. The embodiment of the invention solves the problem that the LTE system wastes the uplink power resources when the LTE system works in the unlicensed carrier frequency band, so that the LTE system can dynamically adjust the transmit power on the unlicensed spectrum, effectively utilize the power resources, and improve the non-authorization. Uplink transmission performance of the spectrum.

DRAWINGS

1 is a schematic flowchart of an uplink power control method according to Embodiment 1 of the present invention;

2 is a schematic flowchart of an uplink power control method according to Embodiment 2 of the present invention;

3 is a schematic flowchart of an uplink power control method according to Embodiment 3 of the present invention;

4 is a schematic flowchart of an uplink power control method according to Embodiment 4 of the present invention;

5 is a schematic flowchart of an uplink power control method according to Embodiment 5 of the present invention;

6 is a schematic flowchart of an uplink power control method according to Embodiment 6 of the present invention;

7 is a schematic flowchart of an uplink power control method according to Embodiment 7 of the present invention;

8 is a schematic flowchart of an uplink power control method according to Embodiment 8 of the present invention;

FIG. 9 is a schematic structural diagram of a structure of a UE according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention; FIG.

FIG. 11 is a schematic structural diagram of an unlicensed resource uplink power control system according to an embodiment of the present invention.

detailed description

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic flowchart of an uplink power control method according to Embodiment 1 of the present invention. As shown in FIG. 1 , the uplink power control method includes the following steps:

Step 101: Receive indication information sent by the base station.

In the embodiment of the present invention, the indication information sent by the base station is received by the UE. Here, the indication information includes at least one of the following information: whether to authorize auxiliary access to the LAA, whether to perform mode configuration signaling of the CCA, power control mode indication signaling, whether there are multiple mode indication signalings simultaneously transmitted by multiple UEs, and power The coefficient, the number of UEs to be instructed, the signaling, the number of scheduled UEs, the number of UEs to be transmitted simultaneously, and the number of UEs to be scheduled at one time.

Here, the power coefficients of different UEs may be the same or different.

In the embodiment of the present invention, the UE may receive the indication information sent by the base station in one of the following manners:

Manner 1: Received by physical layer signaling, where the physical layer signaling includes Downlink Control Information (DCI) signaling.

Manner 2: Received through high-level signaling.

Manner 3: The occupation signal of the bearer indication information is received on the unlicensed carrier that is contending.

In the above solution, multiple signalings in the indication information sent by the UE to the base station may be received in different manners.

In the embodiment of the present invention, the power coefficient is calculated according to at least one of the following information:

The number of UEs to be accessed, the number of UEs scheduled, the number of UEs scheduled at one time, the radio resources allocated by each UE, the path loss, the CCA measurement value, and the power accumulation sum over the entire bandwidth. Here, the CCA measurement is measured by the base station.

In the embodiment of the present invention, the base station allocates a higher transmit power to a specific terminal according to a predetermined manner; or, when the entire bandwidth is scheduled in a non-reuse manner, allocates a higher transmit power spectrum to the corresponding UE; when the part-reuse mode is used for scheduling The non-reuse UE is assigned a higher transmit power spectrum, and the reuse UE is assigned a lower transmit power spectrum. That is, for the UE, when the UE is scheduled in the non-reuse mode, the transmission power spectrum allocated to the UE is higher; and when the UE is scheduled in the reuse mode, the transmission power spectrum allocated to the UE is lower. For example, it is assumed that UE1 occupies subbands 1 to 4, UE2 occupies subbands 5 to 8, subbands 1-4 are non-reuse, subbands 5 to 8 are reuse, and base station allocates higher transmission to UE1 and lower allocation to UE2. The transmit power, for example, the power factor of UE1 is configured to be 1.25, and the UE2 power factor is configured to be 0.8.

Step 102: Select a power control mode according to the indication information sent by the base station.

In the embodiment of the present invention, the mode configuration signaling of the CCA is performed in the LAA in the information, and the power control mode is selected.

Specifically, when mode configuration signaling of performing CCA in the LAA in the indication information indicates that CCA is performed in the LAA, selecting a power control mode on the unlicensed carrier;

When the mode configuration signaling of performing CCA in the LAA in the indication information indicates that CCA is not performed in the LAA, the power control mode in the LTE/LTE-A protocol is selected.

In the foregoing solution, the power control mode on the unlicensed carrier specifically refers to adding on the unlicensed carrier. The power control mode in the LTE/LTE-A protocol refers specifically to the power control mode currently available in the LTE/LTE-A protocol. Of course, the power control mode is not limited to the above two modes, and may be a combination of the existing power control mode in the LTE/LTE-A protocol and the newly added power control mode on the unlicensed carrier, which may be selected according to specific conditions. The corresponding power control method.

Step 103: Calculate and adjust the transmit power of the UE according to at least one of the following information: the indication information received from the base station, the maximum transmit power of the UE, the path loss, the idle channel assessment CCA measurement value, and the power accumulation sum.

In this step, the CCA measurement value is measured by the UE.

In the embodiment of the present invention, calculating the transmit power of the UE may be calculated according to any one of the following formulas (1) to (5):

UE's transmit power = UE's maximum transmit power × power factor (1)

UE's transmit power = (the maximum transmit power of the UE / the number of RBs on the entire bandwidth) × the number of RBs occupied × power factor (2)

UE transmit power = UE's maximum transmit power (3)

UE's transmit power = (the maximum transmit power of the UE / the number of RBs on the entire bandwidth) × the number of RBs occupied (4)

The transmit power of the UE=the maximum transmit power of the UE/the number of UEs, where the number of UEs is the number of visited UEs or the number of scheduled UEs or the number of simultaneously transmitted UEs (5)

In the embodiment of the present invention, adjusting the transmit power of the UE may be adjusted by: when the path loss is higher than the preset threshold, the current transmit power of the UE is increased; when the measured value of the CCA is increased, the current transmit power of the UE is used. Reduced; when the CCA measurement decreases, the current transmit power of the UE is increased. Specifically, in the embodiment of the present invention, when the UE needs to perform carrier sensing, the UE estimates the power accumulation of the entire bandwidth. When the power of the entire bandwidth is accumulated and exceeds the maximum transmit power of the UE, the UE may adopt one of the following to adjust the transmit power. : Adjust the CCA threshold and readjust the launch The power is such that the power of the entire bandwidth is accumulated and does not exceed the maximum transmit power of the UE.

In the embodiment of the present invention, when the power of the entire bandwidth is accumulated and exceeds the maximum transmit power of the UE, the CCA threshold is adjusted or the transmit power is re-adjusted so that the power of the entire bandwidth is accumulated and does not exceed the maximum transmit power of the UE.

In the embodiment of the present invention, when the UE calculates and adjusts the transmit power, it is ensured that the total transmit power of the UE does not exceed the maximum transmit power of the UE specified by the LTE/LTE-A system.

The embodiment of the invention solves the problem that the LTE system wastes the uplink power resources when the LTE system works in the unlicensed carrier frequency band, so that the LTE system can dynamically adjust the transmit power on the unlicensed spectrum, effectively utilize the power resources, and improve the non-authorization. Uplink transmission performance of the spectrum.

FIG. 2 is a schematic flowchart of an uplink power control method according to Embodiment 2 of the present invention. As shown in FIG. 2, the uplink power control method includes the following steps:

Step 201: The base station sends a mode configuration signaling of the CCA to the UE in the LAA.

In the embodiment of the present invention, the base station sends, by using one of the following manners, whether to perform mode configuration signaling of the CCA in the LAA to the UE:

Manner 1: The base station sends the mode configuration signaling of the CCA to the UE in the LAA through physical layer signaling, where the physical layer signaling includes DCI signaling.

Manner 2: The base station sends the mode configuration signaling of the CCA to the UE in the LAA through the high layer signaling.

Manner 3: The base station sends, on the unlicensed carrier that is contending, whether the bearer signal of the mode configuration signaling of the CCA is performed in the bearer LAA to the UE.

Step 202: The UE receives the indication information of the base station, and the UE selects an uplink power control mode according to whether the mode configuration signaling of the CCA is performed in the LAA.

Specifically, when performing CCA in the LAA, the UE selects a new power control mode on the unlicensed carrier; when the CCA is not performed in the LAA, the UE selects an existing power control mode of the LTE/LTE-A system.

The embodiment of the present invention assumes that the CCA is performed in the LAA, and after receiving the indication information of the base station, the UE selects a new power control mode on the unlicensed carrier.

Step 203: The UE calculates the transmit power by using the following formula: UE transmit power = (the maximum transmit power of the UE / the number of RBs on the entire bandwidth) × the number of occupied RBs.

FIG. 3 is a schematic flowchart of an uplink power control method according to Embodiment 3 of the present invention. As shown in FIG. 3, the uplink power control method includes the following steps:

Step 301: The base station sends the indication information to the UE, where the indication information includes: at least whether the CCA mode configuration signaling and the scheduled UE number indication signaling are performed in the LAA.

In the embodiment of the present invention, the manner in which the base station sends the indication information is optional:

Manner 1: The base station sends indication information to the UE through physical layer signaling, where the physical layer signaling includes DCI signaling.

Manner 2: The base station sends the indication information to the UE by using the high layer signaling.

Here, whether the CCA mode configuration signaling and the scheduled UE number indication signaling in the LAA are performed may be sent in the same manner or in different manners, for example, whether the CCA mode configuration signaling is performed in the LAA by the upper layer. Signaling is sent, and the number of scheduled UEs indicates that signaling is sent through physical layer signaling.

Step 302: The UE selects a power control mode according to the indication information of the base station.

Step 303: The UE calculates the transmit power by using the following formula: UE transmit power = maximum transmit power of the UE / number of scheduled UEs.

4 is a schematic flowchart of an uplink power control method according to Embodiment 4 of the present invention. As shown in FIG. 4, the uplink power control method includes the following steps:

Step 401: The base station sends the indication information to the UE, where the indication information includes: whether the CCA mode configuration signaling and the power coefficient are performed in the LAA.

The manner in which the base station sends the indication information is optional:

Manner 1: The base station sends the signal to the UE through physical layer signaling, where the physical layer signaling includes DCI signaling.

Manner 2: The base station sends the UE to the UE through high layer signaling.

The mode configuration signaling and the power coefficient for performing CCA in the LAA may be sent in the same manner or in different manners. For example, whether mode configuration signaling for performing CCA in the LAA is sent by higher layer signaling, and the power coefficient passes through the physical layer. Signaling is sent, either by DCI or by high-level signaling.

Step 402: The UE selects a power control mode according to the indication information of the base station.

Step 403: The UE calculates the transmit power by using the following formula: UE transmit power=the maximum transmit power of the UE×power coefficient.

FIG. 5 is a schematic flowchart of an uplink power control method according to Embodiment 5 of the present invention. As shown in FIG. 5, the uplink power control method includes the following steps:

Step 501: The base station sends the indication information to the UE, where the indication information includes mode configuration signaling for performing CCA in the LAA and the number of indications of the scheduled UE.

Manner 2: The base station sends the UE to the UE through high layer signaling.

The mode configuration signaling for performing CCA in the LAA and the number of indications of the scheduled UE may be sent in the same manner or in different manners. For example, whether mode configuration signaling for performing CCA in the LAA is performed by higher layer signaling. The number of transmitted UEs indicates that the signaling is sent through physical layer signaling.

Step 502: The UE selects a power control mode according to the indication information of the base station.

Step 503: The UE calculates the transmit power by using the following formula: UE transmit power = maximum transmit power of the UE.

Step 504: The UE estimates a power accumulation sum. If the power accumulation sum is greater than the maximum transmission power of the UE, the UE adjusts the CCA threshold to make the power accumulation sum smaller than the maximum transmission power of the UE.

In the embodiment of the present invention, the power accumulation sum (mw)=the maximum transmit power of the UE×the number of scheduled UEs. If the power accumulation sum is greater than the maximum transmit power of the UE UE, the UE adjusts the CCA threshold=-73dBm/MHz+10×lg. (B) +23 dBm - power accumulation sum (dBm); where B represents the bandwidth in MHz.

FIG. 6 is a schematic flowchart of an uplink power control method according to Embodiment 6 of the present invention. As shown in FIG. 6, the uplink power control method includes the following steps:

Step 601: The base station sends the following indication information to the UE by using the high layer signaling: whether the CCA mode configuration signaling, the power coefficient, and the maximum number of UEs scheduled at one time are performed in the LAA.

Step 602: The base station sends the scheduled number of UE indication signaling to the UE by using physical layer signaling.

Step 603: The UE receives the indication information sent by the base station, and the UE selects the power control mode according to whether the CCA mode configuration signaling is performed in the LAA.

The embodiment of the present invention assumes that the CCA is performed in the LAA, and the UE selects a new power control mode on the unlicensed carrier.

Step 604: The UE calculates the transmit power by using the following formula: UE transmit work = maximum transmit power of the UE x power coefficient.

Step 605: The UE adjusts the power coefficient according to the number of scheduled UEs.

For example, when the number of scheduled UEs is equal to 1, the power coefficient may be 1 and when the number of scheduled UEs is greater than 1, the power coefficient notified by the higher layer signaling is adopted.

FIG. 7 is a schematic flowchart of an uplink power control method according to Embodiment 7 of the present invention. As shown in FIG. 7, the uplink power control method includes the following steps:

Step 701: The base station sends indication information to the UE, where the indication information includes a power coefficient.

Step 702: The UE receives the indication information sent by the base station, and the UE determines the power control mode according to the power coefficient.

For example, if the power coefficient is a certain value, for example, the power coefficient is equal to 0, the existing power control mode of the LTE/LTE-A system is selected. When the power coefficient is not equal to 0, the new power control mode on the unlicensed carrier is adopted. Embodiments of the invention assume that the power factor is not equal to zero.

Step 703: The UE calculates the transmit power by using the following formula: UE transmit power = (the maximum transmit power of the UE / the number of RBs on the entire bandwidth) × the number of occupied RBs x the power coefficient.

The present invention further provides an embodiment in which the base station performs scheduling on the UE, and assumes that UE1 occupies sub-bands 1 to 4, UE2 occupies sub-bands 5-8, sub-bands 1 to 4 are non-reuse modes, and sub-bands 5 to 8 are reuse modes. The base station allocates a higher transmission to UE1 and allocates a lower transmission power to UE2. For example, the power coefficient configuration of UE1 is 1.25, and the power coefficient configuration of UE2 is 0.8. The base station transmits the power coefficient to the UE.

The UE receives the power coefficient transmitted by the base station, and calculates the transmission power according to the following formula: UE transmit power = (the maximum transmit power of the UE / the number of RBs on the entire bandwidth) × the number of occupied RBs × the power coefficient.

The unauthenticated resource uplink control method provided by the present invention solves the specific problem that the LTE uplink power resource is wasted when the unlicensed carrier performs uplink data transmission, and improves the uplink transmission performance of the unlicensed spectrum.

FIG. 8 is a schematic flowchart of an uplink power control method according to Embodiment 8 of the present invention. The uplink power control method is applied to a base station side. As shown in FIG. 8, the uplink power control method includes the following steps:

Step 801: Send indication information to the UE, so that the UE performs according to the indication information. Uplink power control.

In the embodiment of the present invention, the sending the indication information to the UE includes:

Sending indication information to the UE through physical layer signaling; or

Sending indication information to the UE through high layer signaling; or

In the above solution, multiple signalings in the indication information sent to the UE may be sent in the same or different manner.

In the embodiment of the present invention, the power coefficient is calculated according to at least one of the following information: the number of accessed UEs, the number of scheduled UEs, the number of UEs scheduled at one time, and the radio resources allocated by each UE. Loss, CCA measurement, power accumulation over the entire bandwidth.

In the embodiment of the present invention, the base station allocates a transmit power spectrum to the UE according to a predetermined manner; or, when the non-reuse mode is used for the entire bandwidth, the UE is allocated a transmit power spectrum higher than a predetermined value; when the part-reuse mode is used for scheduling A non-reuse UE is allocated a transmission power spectrum higher than a predetermined value, and a UE of the reuse is allocated a transmission power spectrum lower than a predetermined value.

FIG. 9 is a schematic structural diagram of a structure of a UE according to an embodiment of the present invention. As shown in FIG. 9, the UE includes:

The receiving unit 91 is configured to receive indication information sent by the base station;

The selecting unit 92 is configured to select a power control mode according to the indication information sent by the base station;

The processing unit 93 is configured to calculate and adjust the transmit power of the UE according to at least one of the following information: the indication information received from the base station, the maximum transmit power of the UE, the path loss, the CCA measurement value, and the power accumulation sum.

In an embodiment of the invention, the selecting unit 92 includes:

The first selection sub-unit 921 is configured to: when the mode configuration signaling of performing CCA in the LAA in the indication information indicates that CCA is performed in the LAA, selecting a power control mode on the unlicensed carrier;

The second selection sub-unit 922 is configured to select a power control mode in the long-term evolution LTE/LTE-A protocol when the mode configuration signaling of performing CCA in the LAA in the indication information indicates that CCA is not performed in the LAA.

In an embodiment of the invention, the processing unit 93 includes:

The calculation subunit 931 is configured to calculate the transmit power of the UE according to the following formula:

UE transmit power = maximum transmit power of the UE x power factor; or,

The transmit power of the UE = the maximum transmit power of the UE; or,

In an embodiment of the present invention, the processing unit 93 includes: a control subunit 932 configured to: when the path loss is higher than a preset threshold, increase the current transmit power of the UE; when the CCA measurement value increases, the UE is configured. The current transmit power is reduced; when the CCA measurement is reduced, the current UE is The transmission power is increased.

In an embodiment of the present invention, the processing unit 93 includes: an adjustment subunit 933 configured to adjust a CCA threshold or re-adjust transmit power when the power of the entire bandwidth is accumulated and exceed the maximum transmit power of the UE, so as to make the entire bandwidth. The power is accumulated and does not exceed the maximum transmit power of the UE.

It should be understood by those skilled in the art that the implementation functions of each unit and its subunits in the UE shown in FIG. 9 can be understood by referring to the related description of the foregoing uplink power control method. The functions of each unit and its subunits in the UE shown in FIG. 9 can be implemented by a program running on a processor, or can be realized by a specific logic circuit.

In practical applications, the functions implemented by each unit in the UE may be implemented by a Central Processing Unit (CPU), a Micro Processor Unit (MPU), or a digital signal processor located in the UE. (Digital Signal Processor, DSP), or Field Programmable Gate Array (FPGA) implementation.

FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 10, the base station includes:

The sending unit 11 is configured to send indication information to the UE, so that the UE performs uplink power control according to the indication information.

The sending unit 11 is further configured to send the indication information to the UE by using physical layer signaling; or

Sending indication information to the UE through high layer signaling; or

The plurality of signalings in the indication information sent to the UE may be sent in the same or different manner.

The power coefficient is calculated according to at least one of the following information: the number of accessed UEs, the number of scheduled UEs, the number of UEs scheduled at one time, the radio resources allocated by each UE, the path loss, the CCA measurement value, The sum of power on the entire bandwidth.

The base station further includes: a control unit 12, which allocates a transmit power spectrum to the UE according to a predetermined manner; or, when the non-reuse mode is used for the entire bandwidth, allocates a transmit power spectrum higher than a predetermined value to the UE; In the mode scheduling, the non-reuse UE is allocated a transmission power spectrum higher than a predetermined value, and the UE of the reuse is allocated a transmission power spectrum lower than a predetermined value.

In practical applications, the functions implemented by each unit in the base station may be implemented by a Central Processing Unit (CPU), a Micro Processor Unit (MPU), or a digital signal processor located in the base station. (Digital Signal Processor, DSP), or Field Programmable Gate Array (FPGA) implementation.

FIG. 11 is a schematic structural diagram of an unlicensed resource uplink power control system according to an embodiment of the present invention. As shown in FIG. 11, the system includes:

The base station 21 is configured to send indication information to the UE.

The UE 22 is configured to receive the indication information sent by the base station 21, select a power control mode according to the indication information sent by the base station 21, and calculate and adjust the transmit power of the UE22 according to at least one of the following information: the indication information received from the base station 21. , UE's maximum transmit power, path loss, idle channel evaluation CCA measurement, power accumulation and.

In an embodiment of the present invention, the base station 21 is further configured to allocate a transmit power spectrum to the UE 22 according to a predetermined manner; or, when the non-reuse manner is used on the entire bandwidth, the UE 22 is allocated a transmit power spectrum higher than a predetermined value. When the part-reuse mode is used for scheduling, the non-reuse UE 22 is allocated a transmission power spectrum higher than a predetermined value, and the UE22 of the reuse is allocated a transmission power spectrum lower than a predetermined value.

The apparatus for tracking the service signaling according to the embodiment of the present invention is implemented in the form of a software function module. It can also be stored on a computer readable storage medium when sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

Correspondingly, an embodiment of the present invention further provides a computer storage medium, wherein a computer program is stored, and the computer program is used to execute an uplink power control method according to an embodiment of the present invention.

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

Industrial applicability

In the technical solution of the embodiment of the present invention, the base station sends control information to the UE. The UE calculates and adjusts the transmit power of the terminal UE according to at least one of the following information: the indication information received from the base station, the maximum transmit power of the UE, the path loss, the idle channel assessment CCA measurement value, and the power accumulation sum. The problem that the LTE system wastes the uplink power resources when the LTE system works in the unlicensed carrier frequency band is solved, so that the LTE system can dynamically adjust the transmission power on the unlicensed spectrum, effectively utilize the power resources, and improve the uplink transmission of the unlicensed spectrum. performance.

Claims

An uplink power control method, the method comprising:

Receiving indication information sent by the base station;

Selecting a power control mode according to the indication information sent by the base station;

The transmit power of the terminal UE is calculated and adjusted according to at least one of the following information: the indication information received from the base station, the maximum transmit power of the UE, the path loss, the idle channel assessment CCA measurement value, and the power accumulation sum.
The uplink power control method according to claim 1, wherein the indication information comprises at least one of the following: an authorization assisting access LAA to perform mode configuration signaling of the CCA, power control mode indication signaling, presence or absence The mode indication signaling, the power coefficient, the number of UEs to be instructed, the number of UEs to be scheduled, the number of UEs to be transmitted, and the number of UEs to be scheduled at the same time. .
The uplink power control method according to claim 2, wherein the selecting a power control mode according to the indication information sent by the base station comprises:

When the mode configuration signaling of performing CCA in the LAA in the indication information indicates that CCA is performed in the LAA, selecting a power control mode on the unlicensed carrier;

When the mode configuration signaling of performing CCA in the LAA in the indication information indicates that CCA is not performed in the LAA, the power control mode in the Long Term Evolution LTE/LTE-A protocol is selected.
The uplink power control method according to claim 2, wherein calculating the transmit power of the UE according to at least one of the following information comprises: calculating a transmit power of the UE according to the following formula:

UE transmit power = maximum transmit power of the UE x power factor; or,

The transmit power of the UE = (the maximum transmit power of the UE / the number of RBs on the entire bandwidth) × the number of RBs occupied × the power factor; or

The transmit power of the UE = the maximum transmit power of the UE; or,

UE transmit power = (the maximum transmit power of the UE / the number of RBs on the entire bandwidth) × occupied The transmit power of the UE is the maximum transmit power of the UE/the number of UEs, where the number of UEs is the number of accessed UEs or the number of scheduled UEs or the number of simultaneously transmitted UEs.
The uplink power control method according to any one of claims 2 to 4, wherein adjusting the transmit power of the UE according to at least one of the following information comprises:

When the path loss is higher than the preset threshold, the current transmit power of the UE is increased;

When the CCA measurement value increases, the current transmit power of the UE is decreased; when the CCA measurement value decreases, the current transmit power of the UE is increased.
The uplink power control method according to any one of claims 2 to 4, wherein the method further comprises:

When the power of the entire bandwidth is accumulated and exceeds the maximum transmit power of the UE, the CCA threshold is adjusted or the transmit power is re-adjusted so that the power of the entire bandwidth is accumulated and does not exceed the maximum transmit power of the UE.
An uplink power control method, the method comprising:

Sending indication information to the UE, so that the UE performs uplink power control according to the indication information;

The indication information includes at least one of the following information: whether to perform CCA mode configuration signaling, power control mode indication signaling, whether there are multiple UEs simultaneously transmitting mode indication signaling, power coefficient, and access in the LAA. The number of UEs indicates signaling, the number of scheduled UEs, the number of UEs that are simultaneously transmitted, and the number of UEs that are scheduled at one time.
The uplink power control method according to claim 7, wherein the sending the indication information to the UE comprises:

Sending indication information to the UE through physical layer signaling; or

Sending indication information to the UE through high layer signaling; or

The occupancy signal carrying the indication information is sent to the UE on the unlicensed carrier.
The uplink power control method according to claim 8, wherein the plurality of signalings in the indication information sent to the UE may be sent in the same or different manner.
The uplink power control method according to claim 7, wherein the power coefficient is calculated according to at least one of the following information: the number of accessed UEs, the number of scheduled UEs, the number of UEs scheduled at one time, and each The radio resources allocated by the UE, the path loss, the CCA measurement value, and the power accumulation sum over the entire bandwidth.
The uplink power control method according to any one of claims 7 to 10, wherein the method further comprises: allocating a transmission power spectrum to the UE according to a predetermined manner; or

When the non-reuse (non-resource multiplexing) mode is used for the entire bandwidth, the UE is allocated a transmission power spectrum higher than a predetermined value; when the part-reuse (partial resource multiplexing) mode is used, the non-reuse UE is allocated. For a transmission power spectrum higher than a predetermined value, a UE of a reuse (resource multiplexing) is allocated a transmission power spectrum lower than a predetermined value.
A UE, the UE includes:

a receiving unit, configured to receive indication information sent by the base station;

The selecting unit is configured to select a power control mode according to the indication information sent by the base station;

The processing unit is configured to calculate and adjust a transmit power of the UE according to at least one of the following information: the indication information received from the base station, the maximum transmit power of the UE, the path loss, the CCA measurement value, and the power accumulation sum.
The UE according to claim 12, wherein the indication information comprises at least one of the following: an authorization to assist the access LAA to perform mode configuration signaling of the CCA, power control mode indication signaling, presence of multiple UEs The mode of the simultaneous transmission indicates the signaling, the power coefficient, the number of UEs to be instructed, the number of UEs to be scheduled, the number of UEs to be transmitted, and the number of UEs to be scheduled at one time.
The UE of claim 13, wherein the selection unit comprises:

a first selection subunit configured to perform CCA in the LAA in the indication information The mode configuration signaling indicates that the power control mode on the unlicensed carrier is selected when performing CCA in the LAA;

And a second selection sub-unit configured to select a power control mode in the Long Term Evolution (LTE)-LTE-A protocol when the mode configuration signaling of the CCA in the indication information indicates that the CCA is not performed in the LAA.
The UE of claim 13, wherein the processing unit comprises:

The calculation subunit is configured to calculate the transmit power of the UE according to the following formula:

UE transmit power = maximum transmit power of the UE x power factor; or,

The transmit power of the UE = (the maximum transmit power of the UE / the number of RBs on the entire bandwidth) × the number of RBs occupied × the power factor; or

The transmit power of the UE = the maximum transmit power of the UE; or,

The transmit power of the UE = (the maximum transmit power of the UE / the number of RBs on the entire bandwidth) × the number of RBs occupied; or

The transmit power of the UE is the maximum transmit power of the UE/the number of UEs, where the number of UEs is the number of accessed UEs or the number of scheduled UEs or the number of simultaneously transmitted UEs.
The UE according to any one of claims 13 to 15, wherein the processing unit comprises: a control subunit configured to increase a current transmit power of the UE when the path loss is higher than a preset threshold; when the CCA measurement is performed When rising, the current transmit power of the UE is reduced; when the CCA measurement is decreased, the current transmit power of the UE is increased.
The UE according to any one of claims 13 to 15, wherein the processing unit comprises: an adjustment subunit configured to adjust a CCA threshold or re-adjust transmission when power of the entire bandwidth is accumulated and exceeds a maximum transmit power of the UE The power is such that the power of the entire bandwidth is accumulated and does not exceed the maximum transmit power of the UE.
A base station, the base station comprising:

a sending unit, configured to send indication information to the UE, so that the UE is configured according to the indication Perform uplink power control;

The indication information includes at least one of the following information: whether to perform CCA mode configuration signaling, power control mode indication signaling, whether there are multiple UEs simultaneously transmitting mode indication signaling, power coefficient, and access in the LAA. The number of UEs indicates signaling, the number of scheduled UEs, the number of UEs that are simultaneously transmitted, and the number of UEs that are scheduled at one time.
The base station according to claim 18, wherein the sending unit is further configured to send the indication information to the UE by using physical layer signaling; or

Sending indication information to the UE through high layer signaling; or

The occupancy signal carrying the indication information is sent to the UE on the unlicensed carrier.
The base station according to claim 19, wherein the plurality of signalings in the indication information sent to the UE may be sent in the same or different manner.
The base station according to claim 18, wherein the power coefficient is calculated according to at least one of the following information: the number of accessed UEs, the number of scheduled UEs, the number of UEs scheduled at one time, and each UE allocation. Radio resources, path loss, CCA measurements, power accumulation over the entire bandwidth.
The base station according to any one of claims 18 to 21, wherein the base station further comprises: a control unit, which allocates a transmit power spectrum to the UE according to a predetermined manner; or, when the entire bandwidth is scheduled in a non-reuse manner, to the UE A transmission power spectrum higher than a predetermined value is allocated; when the part-reuse mode is used for scheduling, a non-reuse UE is allocated a transmission power spectrum higher than a predetermined value, and a UE of the reuse is allocated a transmission power spectrum lower than a predetermined value.
An unlicensed resource uplink power control system, the system comprising:

The base station is configured to send indication information to the UE;

The UE is configured to receive the indication information sent by the base station, select a power control mode according to the indication information sent by the base station, and calculate and adjust the transmit power of the UE according to at least one of the following information: the indication information received from the base station, and the UE Maximum transmit power, path loss, idle channel evaluation CCA measurement, power accumulation and.
The unlicensed resource uplink power control system according to claim 13, wherein

The base station is further configured to allocate a transmit power spectrum to the UE according to a predetermined manner; or, when the non-reuse mode is used for the entire bandwidth, the UE is allocated a transmit power spectrum higher than a predetermined value; when the part-reuse mode is used for scheduling A non-reuse UE is allocated a transmission power spectrum higher than a predetermined value, and a UE of the reuse is allocated a transmission power spectrum lower than a predetermined value.
A computer storage medium having stored therein computer executable instructions configured to perform the uplink power control method of any of claims 1-11.