WO2017020385A1 - 设置发送功率的方法、装置、基站和用户设备 - Google Patents

设置发送功率的方法、装置、基站和用户设备 Download PDF

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Publication number
WO2017020385A1
WO2017020385A1 PCT/CN2015/088490 CN2015088490W WO2017020385A1 WO 2017020385 A1 WO2017020385 A1 WO 2017020385A1 CN 2015088490 W CN2015088490 W CN 2015088490W WO 2017020385 A1 WO2017020385 A1 WO 2017020385A1
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WIPO (PCT)
Prior art keywords
unlicensed
value
transmission power
carrier
carriers
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PCT/CN2015/088490
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English (en)
French (fr)
Inventor
李明菊
朱亚军
张云飞
Original Assignee
宇龙计算机通信科技(深圳)有限公司
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Publication of WO2017020385A1 publication Critical patent/WO2017020385A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/143—Downlink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/346—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading distributing total power among users or channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for setting transmit power on each unlicensed carrier on an unlicensed spectrum, and setting a transmit power on each unlicensed carrier on an unlicensed spectrum.
  • a device, a base station, and a user equipment are examples of communications technologies.
  • 3GPP is discussing how to use unlicensed spectrum, such as the 2.4 GHz and 5 GHz bands, with the help of licensed spectrum.
  • unlicensed spectrum are currently mainly used in systems such as Wi-Fi, Bluetooth, radar, and medical.
  • LAA LTE Assisted Access
  • TDD mode TDD mode
  • LTE systems operating in unlicensed bands have the ability to provide higher spectral efficiency and greater coverage, while relying on the same core network to allow data traffic between licensed and unlicensed bands. Sew switch. For the user, this means a better broadband experience, higher speed, better stability and mobility.
  • Wi-Fi Wireless Fidelity
  • CSMA/CD Carrier Sense Multiple Access/Collision Detection
  • the basic principle of this method is Wi-Fi. Before the AP (Access Point) or the terminal sends signaling or data, it must first monitor whether other APs or other terminals are transmitting/receiving signaling or data. If so, continue to listen until it is monitored. If not, a random number is generated as the backoff time. If no signaling or data transmission is detected during this backoff time, the AP or the terminal may start transmitting signaling or data after the end of the backoff time. The process is shown in Figure 1.
  • the LTE network has good orthogonality to ensure the interference level, the uplink and downlink transmissions between the base station and the user do not need to consider whether other base stations or other users are transmitting data. If LTE is used on an unlicensed band, it does not consider whether other devices are using unlicensed bands nearby, which will cause great interference to Wi-Fi devices. Because LTE transmits as long as there is traffic, there is no monitoring rule, then the Wi-Fi device cannot transmit when LTE has service transmission, and can only detect the channel idle state for data transmission after the LTE service transmission is completed.
  • LTE Long Before Talk
  • the usable state of each carrier on the unlicensed spectrum is dynamically changed.
  • the base station may have three downlink unlicensed carriers available, and five downlink unlicensed carriers may be available in the next time.
  • the following three are proposed in the prior art.
  • Method for allocating transmission power first: the power of all carriers is fixed and averaged; second: the power of all carriers is fixed, unevenly distributed; third, the power of all carriers can be based on the currently available carrier The number changes dynamically.
  • the first two methods have fixed power, and the advantage is to save signaling overhead for notifying the UE power value, but the disadvantage is that the base station power is not fully utilized; the third method power can be dynamically changed, and the advantage is that The transmission power of the base station can be fully utilized, and the transmission power on the available carrier is improved.
  • the disadvantage is that the transmission power on the unlicensed carrier of the UE needs to be dynamically notified, and the signaling overhead of the base station side is increased.
  • the present invention is based on at least one of the above technical problems, and proposes a new scheme for setting the transmission power on each unlicensed carrier on the unlicensed spectrum, so that each of the unlicensed carriers can be adjusted in real time according to the usage of all unlicensed carriers.
  • the value of the transmission power on the unlicensed carrier is used to achieve the purpose of fully utilizing the transmission power of the base station side; at the same time, the signaling overhead of the base station side can be effectively reduced.
  • the present invention provides a method for setting the transmission power on each unlicensed carrier on an unlicensed spectrum, which is applicable to a base station, including: transmitting on each unlicensed carrier in the unlicensed spectrum.
  • the value of the power is set to a fixed value and a variable value; and the CRS (Common Reference Signal) transmission power on each of the unlicensed carriers is calculated according to the fixed value of the transmission power on each of the unlicensed carriers.
  • CRS Common Reference Signal
  • a fixed value and notifying the user equipment of a fixed value of the CRS transmission power on each of the unlicensed carriers; notifying the user equipment of the each non-authentication according to the usage of all the unlicensed carriers in the unlicensed spectrum
  • a variable value of the CRS transmission power on the authorized carrier for the user equipment to use a fixed value of the CRS transmission power on each of the unlicensed carriers and a variable CRS transmission power on each of the unlicensed carriers
  • the value determines the value of the CRS transmission power on each of the unlicensed carriers.
  • the CRS on each unlicensed carrier is determined according to a fixed value of the transmission power on each unlicensed carrier by setting the value of the transmission power on each unlicensed carrier to a fixed value and a variable value. Transmitting a fixed value of power, and notifying the user equipment of a fixed value of CRS transmission power on each unlicensed carrier, and notifying the user equipment of each non-authorized carrier according to the usage of all unlicensed carriers in the unlicensed spectrum
  • the variable value of the CRS transmission power enables real-time adjustment of each unlicensed carrier based on the usage of all unlicensed carriers
  • the value of the transmission power is used to achieve the purpose of making full use of the transmission power of the base station side; at the same time, since only the variable value of the CRS transmission power on each unlicensed carrier is notified each time the user equipment is notified, it can be effective. Reduce the signaling overhead on the base station side.
  • the solution for calculating the fixed value of the transmission power on each unlicensed carrier mainly includes:
  • Solution 1 Calculate a fixed value of the transmit power on each unlicensed carrier according to the number of all unlicensed carriers on the unlicensed spectrum and the total transmit power of the base station.
  • the fixed value of the transmit power on each unlicensed carrier is equal to the total transmit power of the base station divided by the number of all unlicensed carriers, that is, the fixed value of the transmit power on each unlicensed carrier is the same.
  • the fixed values of the transmission power on each unlicensed carrier may be the same or different.
  • the step of notifying the user equipment of the variable value of the CRS transmission power on each of the unlicensed carriers according to the usage of all the unlicensed carriers in the unlicensed spectrum includes: :
  • the user equipment when notifying the user equipment of the variable value of the CRS transmission power on each unlicensed carrier, the user equipment may be notified first whether the CRS transmission power on the unlicensed carrier has a variable value, that is, according to each unlicensed carrier. Whether the upper transmit power has a variable value to determine, if it is determined that the CRS transmit power on any unlicensed carrier has a variable value, the unlicensed carrier is calculated according to the variable value of the transmit power on the unlicensed carrier. The CRS transmits a variable value of power and notifies the user equipment.
  • the user equipment is notified by a RRC (Radio Resource Control) signaling, whether the CRS transmission power on each unlicensed carrier has a variable value; and
  • the downlink control information (Downlink Control Information) signaling notifies the user equipment of the value of the variable value of the CRS transmission power on any of the unlicensed carriers.
  • the value of the variable value of the CRS transmission power on the unlicensed carrier can be adjusted in real time.
  • the method further includes:
  • a fixed value of the transmit power calculates a variable value of the transmit power on each of the unlicensed carriers
  • a variable value of the transmission power on each of the unlicensed carriers is calculated by the ratio of the total transmission power of the base station and the fixed value of the transmission power on each of the unlicensed carriers.
  • the fixed value of the transmission power on any unlicensed carrier in the unlicensed spectrum is a minimum value of the transmission power on the any unlicensed carrier.
  • a device for setting the transmission power on each unlicensed carrier on the unlicensed spectrum which is applicable to the base station, and includes: a first setting unit, configured to use the unlicensed spectrum The value of the transmit power on each of the unlicensed carriers is set to a fixed value and a variable value; the first calculating unit is configured to calculate the non-perform according to a fixed value of the transmit power on each of the unlicensed carriers a fixed value of the CRS transmission power on the authorized carrier; a first notification unit, configured to notify the user equipment of a fixed value of the CRS transmission power on each of the unlicensed carriers; and a second notification unit, configured to Notifying the user equipment of a variable value of CRS transmission power on each of the unlicensed carriers for use by the user equipment according to the usage of all unlicensed carriers in the licensed spectrum
  • a fixed value of the CRS transmission power and a variable value of the CRS transmission power on each of the unlicensed carriers determine a value of the CRS transmission
  • the CRS on each unlicensed carrier is determined according to a fixed value of the transmission power on each unlicensed carrier by setting the value of the transmission power on each unlicensed carrier to a fixed value and a variable value. Transmitting a fixed value of power, and notifying the user equipment of a fixed value of CRS transmission power on each unlicensed carrier, and notifying the user equipment of each non-authorized carrier according to the usage of all unlicensed carriers in the unlicensed spectrum
  • the variable value of the CRS transmission power enables the value of the transmission power on each unlicensed carrier to be adjusted in real time according to the usage of all unlicensed carriers, so as to achieve the purpose of fully utilizing the transmission power of the base station side; When the user equipment is notified, only the variable value of the CRS transmission power on each unlicensed carrier is notified, so that the signaling overhead of the base station side can be effectively reduced.
  • the method further includes:
  • a second calculating unit configured to calculate, according to the number of all unlicensed carriers on the unlicensed spectrum and the total transmit power of the base station, a fixed value of the transmit power on each unlicensed carrier; specifically, each The fixed value of the transmission power on the unlicensed carriers is equal to the total transmission power of the base station divided by the number of all unlicensed carriers, that is, the fixed value of the transmission power on each unlicensed carrier is the same. and / or
  • a second setting unit configured to set a fixed value of the transmit power on each of the unlicensed carriers according to a frequency point where each of the unlicensed carriers is located and/or a situation in which each of the unlicensed carriers is occupied.
  • the second notification unit is specifically configured to: determine, according to usage of all unlicensed carriers in the unlicensed spectrum, whether the transmit power on each unlicensed carrier is variable. a value, and according to the determination result, notifying the user equipment whether the CRS transmission power on each unlicensed carrier has a variable value, and when determining that the transmission power on any unlicensed carrier has a variable value, according to The variable value of the transmit power on the any unlicensed carrier calculates a variable value of the CRS transmit power on the any unlicensed carrier, and notifies the user equipment of the CRS on any of the unlicensed carriers The value of the variable value of the transmission power.
  • the user equipment when notifying the user equipment of the variable value of the CRS transmission power on each unlicensed carrier, the user equipment may be notified first whether the CRS transmission power on the unlicensed carrier has a variable value, that is, according to each unlicensed carrier. Whether the transmit power on the variable has a variable value to determine if When the CRS transmission power on any unlicensed carrier has a variable value, the variable value of the CRS transmission power on the unlicensed carrier is calculated according to the variable value of the transmission power on the unlicensed carrier, and is notified to the user equipment. .
  • the second notification unit is further configured to: notify, by using RRC signaling, the user equipment, whether the CRS transmission power on each unlicensed carrier has a variable value, and is used in Notifying the user equipment of the value of the variable value of the CRS transmission power on any of the unlicensed carriers by DCI signaling.
  • the value of the variable value of the CRS transmission power on the unlicensed carrier can be adjusted in real time.
  • the second notification unit is specifically configured to: when the transmission power on each unlicensed carrier is the same, according to the number of unlicensed carriers that are idle on the unlicensed spectrum, Calculating a variable value of the transmission power on each of the unlicensed carriers by using a bandwidth, a total transmission power of the base station, and a fixed value of the transmission power on each of the unlicensed carriers;
  • a variable value of the transmission power on each of the unlicensed carriers is calculated by the ratio of the total transmission power of the base station and the fixed value of the transmission power on each of the unlicensed carriers.
  • the fixed value of the transmission power on any unlicensed carrier in the unlicensed spectrum is a minimum value of the transmission power on the any unlicensed carrier.
  • a base station comprising: means for setting, by a base station, a transmission power on each unlicensed carrier on an unlicensed spectrum, as described in any one of the foregoing technical solutions.
  • a method for setting a transmission power on each unlicensed carrier on an unlicensed spectrum includes: receiving each of the unlicensed spectrums notified by the base station A fixed value of the CRS transmission power on the unlicensed carrier, and receiving, by the base station, the CRS transmission power on the unlicensed carrier to the user equipment according to the usage of all the unlicensed carriers in the unlicensed spectrum a variable value; determining a value of CRS transmission power on each of the unlicensed carriers based on the fixed value and the variable value.
  • the base station notifies the CRS transmission power on each unlicensed carrier by receiving a fixed value of the CRS transmission power on each unlicensed carrier notified by the base station, and the base station notifying the user equipment according to the usage of all the unlicensed carriers.
  • the variable value is used to determine the value of the CRS transmission power on each unlicensed carrier, so that the base station side can adjust the value of the CRS transmission power on each unlicensed carrier according to the usage of all the unlicensed carriers in real time, so as to fully utilize the base station side.
  • the purpose of the transmission power at the same time, since only the variable value of the CRS transmission power on each unlicensed carrier is notified every time the user equipment is notified, the signaling overhead of the base station side can be effectively reduced.
  • the determining, by the fixed value and the variable value, the value of the CRS transmission power on each of the unlicensed carriers includes:
  • a value of the value of the variable value and the fixed value is used as a value of a CRS transmission power on each unlicensed carrier, that is, a value that is increased based on a fixed value;
  • variable value is a multiple of a fixed value.
  • a device for setting the transmission power on each unlicensed carrier on the unlicensed spectrum which is applicable to the user equipment, and includes: a receiving unit, configured to receive the non- Authorizing a fixed value of CRS transmission power on each unlicensed carrier in the spectrum, and receiving the base station to notify the user equipment of each unlicensed carrier according to usage of all unlicensed carriers in the unlicensed spectrum a variable value of the CRS transmission power; a processing unit, configured to determine a value of the CRS transmission power on each of the unlicensed carriers according to the fixed value and the variable value.
  • the base station notifies the CRS transmission power on each unlicensed carrier by receiving a fixed value of the CRS transmission power on each unlicensed carrier notified by the base station, and the base station notifying the user equipment according to the usage of all the unlicensed carriers.
  • the variable value is used to determine the value of the CRS transmission power on each unlicensed carrier, so that the base station side can adjust the value of the CRS transmission power on each unlicensed carrier according to the usage of all the unlicensed carriers in real time, so as to fully utilize the base station side.
  • the purpose of the transmission power at the same time, since only the variable value of the CRS transmission power on each unlicensed carrier is notified every time the user equipment is notified, the signaling overhead of the base station side can be effectively reduced.
  • the processing unit is specifically configured to: use a value of the variable value and a value of the fixed value as a value of a CRS transmission power on each unlicensed carrier, That is, the variable value is a value that is added based on a fixed value; or
  • variable value is a multiple of a fixed value.
  • a user equipment comprising: setting, according to any one of the foregoing technical solutions, the transmission power on each unlicensed carrier on an unlicensed spectrum applicable to the user equipment. Device.
  • the value of the transmission power on each unlicensed carrier can be adjusted according to the usage of all the unlicensed carriers in real time, so as to fully utilize the transmission power of the base station side; and the signaling on the base station side can be effectively reduced. Overhead.
  • FIG. 1 is a schematic diagram showing an interference avoidance rule of a Wi-Fi system
  • FIG. 2 shows a schematic flow diagram of a method of setting transmit power on each unlicensed carrier on an unlicensed spectrum, in accordance with one embodiment of the present invention
  • FIG. 3 shows a schematic block diagram of an apparatus for setting transmit power on each unlicensed carrier on an unlicensed spectrum, in accordance with one embodiment of the present invention
  • FIG. 4 shows a schematic flow chart of a method of setting transmit power on each unlicensed carrier on an unlicensed spectrum, in accordance with another embodiment of the present invention
  • FIG. 5 shows a schematic block diagram of an apparatus for setting transmit power on each unlicensed carrier on an unlicensed spectrum, in accordance with another embodiment of the present invention.
  • FIG. 2 shows a schematic flow diagram of a method of setting transmit power on each unlicensed carrier over an unlicensed spectrum, in accordance with one embodiment of the present invention.
  • a method for setting a transmission power on each unlicensed carrier on an unlicensed spectrum is applicable to a base station, including: Step 202, each of the unlicensed spectrums The value of the transmit power on the unlicensed carrier is set to a fixed value and a variable value; and in step 204, the CRS transmit power on each unlicensed carrier is calculated according to the fixed value of the transmit power on each unlicensed carrier.
  • step 206 notifying the user equipment according to the usage of all the unlicensed carriers in the unlicensed spectrum Determining a variable value of CRS transmission power on each unlicensed carrier, for the user equipment to send according to a fixed value of CRS transmission power on each unlicensed carrier and CRS on each unlicensed carrier
  • the variable value of the power determines the value of the CRS transmission power on each of the unlicensed carriers.
  • the CRS on each unlicensed carrier is determined according to a fixed value of the transmission power on each unlicensed carrier by setting the value of the transmission power on each unlicensed carrier to a fixed value and a variable value. Transmitting a fixed value of power, and notifying the user equipment of a fixed value of CRS transmission power on each unlicensed carrier, and notifying the user equipment of each non-authorized carrier according to the usage of all unlicensed carriers in the unlicensed spectrum
  • the variable value of the CRS transmission power enables the value of the transmission power on each unlicensed carrier to be adjusted in real time according to the usage of all unlicensed carriers, so as to achieve the purpose of fully utilizing the transmission power of the base station side; When the user equipment is notified, only the variable value of the CRS transmission power on each unlicensed carrier is notified, so that the signaling overhead of the base station side can be effectively reduced.
  • the solution for calculating the fixed value of the transmission power on each unlicensed carrier mainly includes:
  • Solution 1 Calculate a fixed value of the transmit power on each unlicensed carrier according to the number of all unlicensed carriers on the unlicensed spectrum and the total transmit power of the base station.
  • the fixed value of the transmit power on each unlicensed carrier is equal to the total transmit power of the base station divided by the number of all unlicensed carriers, that is, the fixed value of the transmit power on each unlicensed carrier is the same.
  • the fixed values of the transmission power on each unlicensed carrier may be the same or different. Specifically, for example, if the frequency is high, the transmission power is fixed at a high value; if the surrounding system uses the carrier more, the fixed value of the transmission power on the carrier is high.
  • the step of notifying the user equipment of the variable value of the CRS transmission power on each of the unlicensed carriers according to the usage of all the unlicensed carriers in the unlicensed spectrum includes: :
  • the user equipment when notifying the user equipment of the variable value of the CRS transmission power on each unlicensed carrier, the user equipment may be notified first whether the CRS transmission power on the unlicensed carrier has a variable value, that is, according to each unlicensed carrier. Whether the upper transmit power has a variable value to determine, if it is determined that the CRS transmit power on any unlicensed carrier has a variable value, the unlicensed carrier is calculated according to the variable value of the transmit power on the unlicensed carrier. The CRS transmits a variable value of power and notifies the user equipment.
  • the user equipment is notified by the RRC signaling whether the CRS transmission power on each of the unlicensed carriers has a variable value; and the DCI (Downlink Control Information) is passed through DCI (Downlink Control Information)
  • the signaling notifies the user equipment of the value of the variable value of the CRS transmission power on any of the unlicensed carriers.
  • the value of the variable value of the CRS transmission power on the unlicensed carrier can be adjusted in real time.
  • the method further includes:
  • the transmission power on each unlicensed carrier is the same, according to the unlicensed spectrum Calculating a variable value of the transmission power on each of the unlicensed carriers by using a number of unlicensed carriers that are idle, a bandwidth, a total transmission power of the base station, and a fixed value of the transmission power on each of the unlicensed carriers;
  • a variable value of the transmission power on each of the unlicensed carriers is calculated by the ratio of the total transmission power of the base station and the fixed value of the transmission power on each of the unlicensed carriers.
  • the fixed value of the transmission power on any unlicensed carrier in the unlicensed spectrum is a minimum value of the transmission power on the any unlicensed carrier.
  • FIG. 3 shows a schematic block diagram of an apparatus for setting transmit power on each unlicensed carrier over an unlicensed spectrum, in accordance with one embodiment of the present invention.
  • an apparatus 300 for setting a transmission power on an unlicensed carrier on an unlicensed spectrum is applicable to a base station, and includes: a first setting unit 302, and a first calculating unit 304.
  • the first setting unit 302 is configured to set a value of the transmission power on each unlicensed carrier in the unlicensed spectrum to a fixed value and a variable value.
  • the first calculating unit 304 is configured to A fixed value of the transmit power on the unlicensed carrier is used to calculate a fixed value of the CRS transmit power on each of the unlicensed carriers;
  • the first notification unit 306 is configured to notify the user equipment of each of the unlicensed carriers a fixed value of the CRS transmission power;
  • the second notification unit 308, configured to notify the user equipment of the CRS transmission power on each unlicensed carrier according to the usage of all the unlicensed carriers in the unlicensed spectrum And determining, by the user equipment, the each non-authorized carrier according to a fixed value of CRS transmission power on each unlicensed carrier and a variable value of CRS transmission power on each unlicensed carrier. The value of the CRS transmission power on.
  • the CRS on each unlicensed carrier is determined according to a fixed value of the transmission power on each unlicensed carrier by setting the value of the transmission power on each unlicensed carrier to a fixed value and a variable value. Transmitting a fixed value of power, and notifying the user equipment of a fixed value of CRS transmission power on each unlicensed carrier, and notifying the user equipment of each non-authorized carrier according to the usage of all unlicensed carriers in the unlicensed spectrum Variable CRS transmit power The value enables the value of the transmission power on each unlicensed carrier to be adjusted in real time according to the usage of all unlicensed carriers, so as to achieve the purpose of fully utilizing the transmission power of the base station side; meanwhile, only notification is notified each time the user equipment is notified
  • the variable value of the CRS transmission power on each unlicensed carrier can effectively reduce the signaling overhead of the base station side.
  • the method further includes:
  • the second calculating unit 310 is configured to calculate, according to the number of all unlicensed carriers on the unlicensed spectrum and the total transmit power of the base station, a fixed value of the transmit power on each unlicensed carrier; specifically, The fixed value of the transmission power on each unlicensed carrier is equal to the total transmission power of the base station divided by the number of all unlicensed carriers, that is, the fixed value of the transmission power on each unlicensed carrier is the same. and / or
  • the second setting unit 312 is configured to set a fixed value of the transmission power on each of the unlicensed carriers according to the frequency point where the unlicensed carrier is located and/or the occupied condition of each of the unlicensed carriers. Specifically, for example, if the frequency is high, the transmission power is fixed at a high value; if the surrounding system uses the carrier more, the fixed value of the transmission power on the carrier is high.
  • the second notification unit 308 is specifically configured to: determine, according to usage of all unlicensed carriers in the unlicensed spectrum, whether the transmit power on each unlicensed carrier has a And changing, according to the determination result, to the user equipment, whether the CRS transmission power on each unlicensed carrier has a variable value, and when determining that the transmission power on any unlicensed carrier has a variable value, Calculating a variable value of CRS transmission power on the any unlicensed carrier according to a variable value of the transmission power on the any unlicensed carrier, and notifying the user equipment of the non-authorized carrier The value of the variable value of the CRS transmission power.
  • the user equipment when notifying the user equipment of the variable value of the CRS transmission power on each unlicensed carrier, the user equipment may be notified first whether the CRS transmission power on the unlicensed carrier has a variable value, that is, according to each unlicensed carrier. Whether the upper transmit power has a variable value to determine, if it is determined that the CRS transmit power on any unlicensed carrier has a variable value, the unlicensed carrier is calculated according to the variable value of the transmit power on the unlicensed carrier. The CRS transmits a variable value of power and notifies the user equipment.
  • the second notification unit 308 is further used to: Notifying the user equipment whether the CRS transmission power on each unlicensed carrier has a variable value, and using the DCI signaling to notify the user equipment of the CRS on any of the unlicensed carriers.
  • the value of the variable value of the transmission power is further used to: Notifying the user equipment whether the CRS transmission power on each unlicensed carrier has a variable value, and using the DCI signaling to notify the user equipment of the CRS on any of the unlicensed carriers.
  • the value of the variable value of the CRS transmission power on the unlicensed carrier can be adjusted in real time.
  • the second notification unit 308 is specifically configured to: when the transmission power on each unlicensed carrier is the same, according to the number of unlicensed carriers that are idle on the unlicensed spectrum channel Calculating a variable value of the transmission power on each of the unlicensed carriers, a bandwidth, a total transmission power of the base station, and a fixed value of the transmission power on each of the unlicensed carriers;
  • a variable value of the transmission power on each of the unlicensed carriers is calculated by the ratio of the total transmission power of the base station and the fixed value of the transmission power on each of the unlicensed carriers.
  • the fixed value of the transmission power on any unlicensed carrier in the unlicensed spectrum is a minimum value of the transmission power on the any unlicensed carrier.
  • the present invention also proposes a base station (not shown) comprising: means 300 for setting the transmit power on each unlicensed carrier on the unlicensed spectrum as shown in FIG.
  • FIG. 4 shows a schematic flow diagram of a method of setting transmit power on each unlicensed carrier over an unlicensed spectrum, in accordance with another embodiment of the present invention.
  • a method for setting a transmission power on an unlicensed carrier on an unlicensed spectrum is applicable to a user equipment, including: Step 402: Receive the non-notified by the base station Authorizing a fixed value of CRS transmission power on each unlicensed carrier in the spectrum, and receiving the base station to notify the user equipment of each unlicensed carrier according to usage of all unlicensed carriers in the unlicensed spectrum a variable value of the CRS transmission power on the upper; step 404, determining a value of the CRS transmission power on each of the unlicensed carriers according to the fixed value and the variable value.
  • the base station notifies the user equipment of the fixed value of the CRS transmission power on each unlicensed carrier notified by the base station, and the base station notifies the user equipment according to the usage of all the unlicensed carriers.
  • the variable value of the CRS transmission power on the unlicensed carrier determines the value of the CRS transmission power on each unlicensed carrier, so that the base station side can adjust the CRS on each unlicensed carrier according to the usage of all the unlicensed carriers in real time.
  • the value of the transmission power is used to achieve the purpose of fully utilizing the transmission power of the base station side; at the same time, since only the variable value of the CRS transmission power on each unlicensed carrier is notified every time the user equipment is notified, it can effectively reduce Signaling overhead on the base station side.
  • the determining, by the fixed value and the variable value, the value of the CRS transmission power on each of the unlicensed carriers includes:
  • a value of the value of the variable value and the fixed value is used as a value of a CRS transmission power on each unlicensed carrier, that is, a value that is increased based on a fixed value;
  • variable value is a multiple of a fixed value.
  • FIG. 5 shows a schematic block diagram of an apparatus for setting transmit power on each unlicensed carrier on an unlicensed spectrum, in accordance with another embodiment of the present invention.
  • an apparatus 500 for setting transmission power on each unlicensed carrier on an unlicensed spectrum is applicable to a user equipment, including: a receiving unit 502 and a processing unit 504.
  • the receiving unit 502 is configured to receive a fixed value of CRS transmission power on each unlicensed carrier in the unlicensed spectrum that is notified by the base station, and receive, by the base station, all unlicensed carriers in the unlicensed spectrum. Notifying the user equipment of the variable value of the CRS transmission power on each of the unlicensed carriers; the processing unit 504, configured to determine the each unlicensed carrier according to the fixed value and the variable value The value of the CRS transmission power on.
  • the base station notifies the CRS transmission power on each unlicensed carrier by receiving a fixed value of the CRS transmission power on each unlicensed carrier notified by the base station, and the base station notifying the user equipment according to the usage of all the unlicensed carriers.
  • the variable value is used to determine the value of the CRS transmission power on each unlicensed carrier, so that the base station side can adjust the value of the CRS transmission power on each unlicensed carrier according to the usage of all the unlicensed carriers in real time, so as to fully utilize the base station side.
  • the purpose of the transmission power at the same time, since only the variable value of the CRS transmission power on each unlicensed carrier is notified every time the user equipment is notified, the signaling on the base station side can be effectively reduced. Overhead.
  • the processing unit 504 is specifically configured to: use a value of the variable value and a value of the fixed value as a value of a CRS transmission power on each unlicensed carrier. , that is, a variable is a value added based on a fixed value; or
  • variable value is a multiple of a fixed value.
  • the present invention also proposes a user equipment (not shown) comprising: means 500 for setting the transmission power on each unlicensed carrier on the unlicensed spectrum as shown in FIG.
  • the technical solution of the present invention is mainly directed to a power allocation method and indication signaling on an unlicensed carrier, and the specific solution is as follows:
  • the transmission power of each unlicensed carrier is divided into two parts, one part is a fixed value part, and one part is a variable value part.
  • the fixed value part uses the RRC signaling to notify the UE (User Equipment), using a conventional method: indicating the transmission power of the CRS.
  • the power of the PDSCH (Physical Downlink Shared Channel) is indicated by the relative value parameters Pa and Pb.
  • the Pa value is a power ratio of the power of the PDSCH in the symbol (symbol) without the CRS to the power of the CRS; and Pb is the ratio of the power of the PDSCH in the symbol with the CRS to the power of the PDSCH in the symbol without the CRS.
  • the value of the fixed value part can be determined by the following scheme:
  • the fixed value of each carrier is the same, that is, the fixed value of the power of each carrier is equal to the total power of the base station divided by the total number of carriers.
  • the fixed value of each carrier is different, and the transmit power value of each carrier may be determined according to the frequency of the carrier and the use of the carrier by other systems such as Wi-Fi or other operators. For example, if the frequency is high, the transmission power is high; if the surrounding system uses more carriers, the transmission power on the carrier is high.
  • the notification signaling of the variable value part consists of two parts:
  • the first part is to use RRC signaling to notify whether there is a variable value part.
  • a new bool type variable can be designed. True is a variable value part, and the identifier supports the dynamic change of the transmission power. False; false is the non-variable value part, and the identification transmission power value is fixed.
  • the value of the variable value part is notified to the UE by using DCI signaling (ie, the second part), and a new DCI signaling bit for indicating the transmission power needs to be designed, if it is variable.
  • DCI signaling ie, the second part
  • a new DCI signaling bit for indicating the transmission power needs to be designed, if it is variable.
  • M M optional values in the value part, and the number of bits is log2(M).
  • both the CRS power and the PDSCH power increase that is, the Pa for the UE and the Pb for the cell remain unchanged.
  • variable value part is that the absolute value of the CRS transmission power of the carrier at the current time is transmitted for the absolute value of the power of the CRS (ie, the fixed value part) in the RRC signaling, and may be in two forms of realization: one is in the RRC letter.
  • the absolute value of the CRS power in the order is given an added value; the other is to give a multiple value based on the absolute value of the CRS power in the RRC signaling.
  • variable value part is determined by the number of carriers being used:
  • the current transmit power of each carrier is the total power of the base station divided by the number of carriers being used, and the CRS transmission power on the carrier is further calculated according to the current carrier transmit power. If the variable value is an added value, it is equal to the CRS transmit power on the currently calculated carrier-the absolute value of the CRS power in the RRC signaling; if the variable value is a multiple value, it is equal to the CRS transmission on the currently calculated carrier. The absolute value of CRS power in power/RRC signaling.
  • the CRS transmission power of each current carrier is allocated according to the ratio of the absolute value of the CRS of each carrier in the RRC signaling, and then the value of the variable value portion is confirmed.
  • variable values can be limited, for example, limited to 2 (requires 1 bit of DCI signaling indication) below or 4 (requires 2 bit of DCI signaling indication) or less or 8 (requires 3 bit DCI signaling indication) Below.
  • the present invention proposes a new scheme for setting the transmission power on each unlicensed carrier on the unlicensed spectrum, so that the usage of all unlicensed carriers can be determined in real time.
  • the value of the transmission power on each unlicensed carrier is adjusted to achieve the purpose of fully utilizing the transmission power of the base station side; and the signaling overhead of the base station side can be effectively reduced.

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Abstract

本发明提供了一种在非授权频谱上设置每个非授权载波上的发送功率的方法、装置、基站和用户设备，其中，适用于基站的在非授权频谱上设置每个非授权载波上的发送功率的方法，包括：将非授权频谱中的每个非授权载波上的发送功率的值设置为固定值和可变值；根据每个非授权载波上的发送功率的固定值计算每个非授权载波上的CRS发送功率的固定值，并向用户设备通知每个非授权载波上的CRS发送功率的固定值；根据非授权频谱中的所有非授权载波的使用情况向用户设备通知每个非授权载波上的CRS发送功率的可变值，以供用户设备确定每个非授权载波上的CRS发送功率的值。本发明的技术方案能够在充分利用基站侧的发送功率的前提下，有效减少基站侧的信令开销。

Description

设置发送功率的方法、装置、基站和用户设备 技术领域
本发明涉及通信技术领域，具体而言，涉及一种在非授权频谱上设置每个非授权载波上的发送功率的方法、一种在非授权频谱上设置每个非授权载波上的发送功率的装置、一种基站和一种用户设备。
背景技术
随着通信业务量的急剧增加，3GPP的授权频谱越来越不足以提供更高的网络容量。为了进一步提高频谱资源的利用率，3GPP正讨论如何在授权频谱的帮助下使用未授权频谱，如2.4GHz和5GHz频段。这些未授权频谱目前主要是Wi-Fi、蓝牙、雷达、医疗等***在使用。
通常情况下，为已授权频段设计的接入技术，如LTE(Long Term Evolution，长期演进)不适合在未授权频段上使用，因为LTE这类接入技术对频谱效率和用户体验优化的要求非常高。然而，载波聚合(Carrier Aggregation，CA)功能让将LTE部署于非授权频段变为可能。3GPP提出了LAA(LTE Assisted Access，LTE辅助接入)的概念，借助LTE授权频谱的帮助来使用未授权频谱。而未授权频谱可以有两种工作方式，一种是补充下行(SDL，Supplemental Downlink)，即只有下行传输子帧；另一种是TDD模式，既包含下行子帧、也包含上行子帧。补充下行这种情况只能是借助载波聚合技术使用。而TDD模式除了可以借助载波聚合技术使用外，还可以借助DC(Dual Connectivity，双连通)使用，也可以独立使用。
相比于Wi-Fi***，工作在未授权频段的LTE***有能力提供更高的频谱效率和更大的覆盖效果，同时基于同一个核心网让数据流量在授权频段和未授权频段之间无缝切换。对用户来说，这意味着更好的宽带体验、更高的速率、更好的稳定性和移动便利。
现有的在非授权频谱上使用的接入技术，如Wi-Fi，具有较弱的抗干扰能力。为了避免干扰，Wi-Fi***设计了很多干扰避免规则，如CSMA/CD(Carrier Sense Multiple Access/Collision Detection，载波监听多路访问/冲突检测方法)，这种方法的基本原理是Wi-Fi的AP(Access Point，接入点)或者终端在发送信令或者数据之前，要先监听检测周围是否有其他AP或者其他终端在发送/接收信令或数据，若有，则继续监听，直到监听到没有为止；若没有，则生成一个随机数作为退避时间，在这个退避时间内，如果没检测到有信令或数据传输，那么在退避时间结束之后，AP或终端可以开始发送信令或数据。该过程如图1所示。
但是，LTE网络中由于有很好的正交性保证了干扰水平，所以基站与用户的上下行传输不用考虑周围是否有其他基站或其他用户在传输数据。如果LTE在非授权频段上使用时也不考虑周围是否有其他设备在使用非授权频段，那么将对Wi-Fi设备带来极大的干扰。因为LTE只要有业务就进行传输，没有任何监听规则，那么Wi-Fi设备在LTE有业务传输时就不能传输，只能等到LTE业务传输完成，才能检测到信道空闲状态以进行数据传输。
可见，LTE网络在使用非授权频段时，最主要的关键点之一是确保LAA能够在公平友好的基础上和现有的接入技术(比如Wi-Fi)共存。而传统的LTE***中没有LBT(Listen Before Talk，先听后说)的机制来避免碰撞，为了与Wi-Fi更好的共存，相关技术中提出了用于LTE网络的LBT机制，以确保LTE网络在非授权频谱上检测到信道忙时，不占用该频段，如果检测到信道闲，才能占用。
由于LTE网络采用了先听后说机制，所以非授权频谱上的每个载波的可使用状态是动态变化的。具体地，在当前时间内，基站端可能有3个下行的非授权载波可用，接下来的时间中可能有5个下行的非授权载波可用，针对这种情况，现有技术中提出了以下三种发送功率的分配方法：第一种：所有载波的功率固定，且平均分配；第二种：所有载波的功率固定，不平均分配；第三种，所有载波的功率可以根据当前可使用的载波数来动态变化。
以上三种方法都有优缺点：前两种方法功率固定，优点在于节省通知UE功率值的信令开销，但缺点在于基站端功率没能充分利用；第三种方法功率可动态变化，优点在于可充分利用基站端的发送功率，提高了可使用载波上的发送功率，而缺点在于需要动态通知UE每个非授权载波上的发送功率，增加了基站侧的信令开销。
因此，如何能够在充分利用基站侧的发送功率的前提下，减少基站侧的信令开销成为亟待解决的技术问题。
发明内容
本发明正是基于上述技术问题至少之一，提出了一种新的在非授权频谱上设置每个非授权载波上的发送功率的方案，使得能够实时根据所有非授权载波的使用情况调整每个非授权载波上的发送功率的值，以实现充分利用基站侧的发送功率的目的；同时能够有效减少基站侧的信令开销。
有鉴于此，本发明提出了一种在非授权频谱上设置每个非授权载波上的发送功率的方法，适用于基站，包括：将所述非授权频谱中的每个非授权载波上的发送功率的值设置为固定值和可变值；根据所述每个非授权载波上的发送功率的固定值计算所述每个非授权载波上的CRS(Common Reference Signal，公共参考信号)发送功率的固定值，并向用户设备通知所述每个非授权载波上的CRS发送功率的固定值；根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值，以供所述用户设备根据所述每个非授权载波上的CRS发送功率的固定值和所述每个非授权载波上的CRS发送功率的可变值确定所述每个非授权载波上的CRS发送功率的值。
在该技术方案中，通过将每个非授权载波上的发送功率的值设置为固定值和可变值，根据每个非授权载波上的发送功率的固定值确定每个非授权载波上的CRS发送功率的固定值，并向用户设备通知每个非授权载波上的CRS发送功率的固定值，以及根据非授权频谱中的所有非授权载波的使用情况向用户设备通知每个非授权载波上的CRS发送功率的可变值，使得能够实时根据所有非授权载波的使用情况调整每个非授权载波上 的发送功率的值，以实现充分利用基站侧的发送功率的目的；同时，由于每次向用户设备通知时仅仅通知的是每个非授权载波上的CRS发送功率的可变值，因此能够有效减少基站侧的信令开销。
计算所述每个非授权载波上的发送功率的固定值的方案主要包括：
方案一：根据所述非授权频谱上的所有非授权载波的数量和所述基站的发送总功率，计算所述每个非授权载波上的发送功率的固定值。
具体地，每个非授权载波上的发送功率的固定值等于基站的发送总功率除以所有非授权载波的数量，即每个非授权载波上的发送功率的固定值相同。
方案二：
根据所述每个非授权载波所在的频点和/或所述每个非授权载波被占用情况设置所述每个非授权载波上的发送功率的固定值。该方案中，每个非授权载波上的发送功率的固定值可以相同也可以不同。
在上述技术方案中，优选地，根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值的步骤具体包括：
根据所述非授权频谱中的所有非授权载波的使用情况确定所述每个非授权载波上的发送功率是否具有可变值，并根据确定结果向所述用户设备通知所述每个非授权载波上的CRS发送功率是否具有可变值；以及在确定任一非授权载波上的发送功率具有可变值时，根据所述任一非授权载波上的发送功率的可变值计算所述任一非授权载波上的CRS发送功率的可变值，并向所述用户设备通知所述任一非授权载波上的CRS发送功率的可变值的取值。
具体地，在向用户设备通知每个非授权载波上的CRS发送功率的可变值时可以先通知用户设备该非授权载波上的CRS发送功率是否具有可变值，即根据每个非授权载波上的发送功率是否具有可变值来确定，若确定任一非授权载波上的CRS发送功率具有可变值时，根据该非授权载波上的发送功率的可变值计算出该非授权载波上的CRS发送功率的可变值并通知给用户设备。
在上述技术方案中，优选地，通过RRC(Radio Resource Control，无线资源控制协议)信令向所述用户设备通知所述每个非授权载波上的CRS发送功率是否具有可变值；以及通过DCI(Downlink Control Information，下行控制信令)信令向所述用户设备通知所述任一非授权载波上的CRS发送功率的可变值的取值。
具体地，由于DCI信令可随时进行发送，因此可以实时调整非授权载波上的CRS发送功率的可变值的取值。
在上述技术方案中，优选地，还包括：
若所述每个非授权载波上的发送功率相同，则根据所述非授权频谱上信道空闲的非授权载波的数量、带宽、所述基站的发送总功率和所述每个非授权载波上的发送功率的固定值计算所述每个非授权载波上的发送功率的可变值；
若所述每个非授权载波上的发送功率不相同，则根据所述非授权频谱上信道空闲的非授权载波的数量、带宽、所述每个非授权载波上的发送功率的固定值之间的比例和所述基站的发送总功率和所述每个非授权载波上的发送功率的固定值，计算所述每个非授权载波上的发送功率的可变值。
在上述技术方案中，优选地，所述非授权频谱中的任一非授权载波上的发送功率的固定值为所述任一非授权载波上的发送功率的最小值。
根据本发明的第二方面，还提出了一种在非授权频谱上设置每个非授权载波上的发送功率的装置，适用于基站，包括：第一设置单元，用于将所述非授权频谱中的每个非授权载波上的发送功率的值设置为固定值和可变值；第一计算单元，用于根据所述每个非授权载波上的发送功率的固定值计算所述每个非授权载波上的CRS发送功率的固定值；第一通知单元，用于并向用户设备通知所述每个非授权载波上的CRS发送功率的固定值；第二通知单元，用于根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值，以供所述用户设备根据所述每个非授权载波上的CRS发送功率的固定值和所述每个非授权载波上的CRS发送功率的可变值确定所述每个非授权载波上的CRS发送功率的值。
在该技术方案中，通过将每个非授权载波上的发送功率的值设置为固定值和可变值，根据每个非授权载波上的发送功率的固定值确定每个非授权载波上的CRS发送功率的固定值，并向用户设备通知每个非授权载波上的CRS发送功率的固定值，以及根据非授权频谱中的所有非授权载波的使用情况向用户设备通知每个非授权载波上的CRS发送功率的可变值，使得能够实时根据所有非授权载波的使用情况调整每个非授权载波上的发送功率的值，以实现充分利用基站侧的发送功率的目的；同时，由于每次向用户设备通知时仅仅通知的是每个非授权载波上的CRS发送功率的可变值，因此能够有效减少基站侧的信令开销。
在上述技术方案中，优选地，还包括：
第二计算单元，用于根据所述非授权频谱上的所有非授权载波的数量和所述基站的发送总功率，计算所述每个非授权载波上的发送功率的固定值；具体地，每个非授权载波上的发送功率的固定值等于基站的发送总功率除以所有非授权载波的数量，即每个非授权载波上的发送功率的固定值相同。和/或
第二设置单元，用于根据所述每个非授权载波所在的频点和/或所述每个非授权载波被占用情况设置所述每个非授权载波上的发送功率的固定值。
在上述技术方案中，优选地，所述第二通知单元具体用于：根据所述非授权频谱中的所有非授权载波的使用情况确定所述每个非授权载波上的发送功率是否具有可变值，并根据确定结果向所述用户设备通知所述每个非授权载波上的CRS发送功率是否具有可变值，并用于在确定任一非授权载波上的发送功率具有可变值时，根据所述任一非授权载波上的发送功率的可变值计算所述任一非授权载波上的CRS发送功率的可变值，并向所述用户设备通知所述任一非授权载波上的CRS发送功率的可变值的取值。
具体地，在向用户设备通知每个非授权载波上的CRS发送功率的可变值时可以先通知用户设备该非授权载波上的CRS发送功率是否具有可变值，即根据每个非授权载波上的发送功率是否具有可变值来确定，若确 定任一非授权载波上的CRS发送功率具有可变值时，根据该非授权载波上的发送功率的可变值计算出该非授权载波上的CRS发送功率的可变值并通知给用户设备。
在上述技术方案中，优选地，所述第二通知单元具体还用于：通过RRC信令向所述用户设备通知所述每个非授权载波上的CRS发送功率是否具有可变值，并用于通过DCI信令向所述用户设备通知所述任一非授权载波上的CRS发送功率的可变值的取值。
具体地，由于DCI信令可随时进行发送，因此可以实时调整非授权载波上的CRS发送功率的可变值的取值。
在上述技术方案中，优选地，所述第二通知单元具体用于：在所述每个非授权载波上的发送功率相同时，根据所述非授权频谱上信道空闲的非授权载波的数量、带宽、所述基站的发送总功率和所述每个非授权载波上的发送功率的固定值计算所述每个非授权载波上的发送功率的可变值；以及
在所述每个非授权载波上的发送功率不相同时，根据所述非授权频谱上信道空闲的非授权载波的数量、带宽、所述每个非授权载波上的发送功率的固定值之间的比例和所述基站的发送总功率和所述每个非授权载波上的发送功率的固定值，计算所述每个非授权载波上的发送功率的可变值。
在上述技术方案中，优选地，所述非授权频谱中的任一非授权载波上的发送功率的固定值为所述任一非授权载波上的发送功率的最小值。
根据本发明的第三方面，还提出了一种基站，包括：如上述任一项技术方案中所述的适用于基站的在非授权频谱上设置每个非授权载波上的发送功率的装置。
根据本发明的第四方面，还提出了一种在非授权频谱上设置每个非授权载波上的发送功率的方法，适用于用户设备，包括：接收基站通知的所述非授权频谱中每个非授权载波上的CRS发送功率的固定值，并接收所述基站根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值；根据所述固定值和所述可变值确定所述每个非授权载波上的CRS发送功率的值。
在该技术方案中，通过接收基站通知的每个非授权载波上的CRS发送功率的固定值和基站根据所有非授权载波的使用情况向用户设备通知每个非授权载波上的CRS发送功率的可变值来确定每个非授权载波上的CRS发送功率的值，使得基站侧能够实时根据所有非授权载波的使用情况调整每个非授权载波上的CRS发送功率的值，以实现充分利用基站侧的发送功率的目的；同时，由于每次向用户设备通知时仅仅通知的是每个非授权载波上的CRS发送功率的可变值，因此能够有效减少基站侧的信令开销。
在上述技术方案中，优选地，根据所述固定值和所述可变值确定所述每个非授权载波上的CRS发送功率的值具体包括：
将所述可变值的取值和所述固定值的和值作为所述每个非授权载波上的CRS发送功率的值，即可变值是在固定值的基础上增加的一个值；或
将所述可变值的取值和所述固定值的乘积作为所述每个非授权载波上的CRS发送功率的值，即可变值是固定值的一个倍数值。
根据本发明的第五方面，还提出了一种在非授权频谱上设置每个非授权载波上的发送功率的装置，适用于用户设备，包括：接收单元，用于接收基站通知的所述非授权频谱中每个非授权载波上的CRS发送功率的固定值，并接收所述基站根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值；处理单元，用于根据所述固定值和所述可变值确定所述每个非授权载波上的CRS发送功率的值。
在该技术方案中，通过接收基站通知的每个非授权载波上的CRS发送功率的固定值和基站根据所有非授权载波的使用情况向用户设备通知每个非授权载波上的CRS发送功率的可变值来确定每个非授权载波上的CRS发送功率的值，使得基站侧能够实时根据所有非授权载波的使用情况调整每个非授权载波上的CRS发送功率的值，以实现充分利用基站侧的发送功率的目的；同时，由于每次向用户设备通知时仅仅通知的是每个非授权载波上的CRS发送功率的可变值，因此能够有效减少基站侧的信令开销。
在上述技术方案中，优选地，所述处理单元具体用于：将所述可变值的取值和所述固定值的和值作为所述每个非授权载波上的CRS发送功率的值，即可变值是在固定值的基础上增加的一个值；或
将所述可变值的取值和所述固定值的乘积作为所述每个非授权载波上的CRS发送功率的值，即可变值是固定值的一个倍数值。
根据本发明的第六方面，还提出了一种用户设备，包括：如上述任一项技术方案中所述的适用于用户设备的在非授权频谱上设置每个非授权载波上的发送功率的装置。
通过以上技术方案，使得能够实时根据所有非授权载波的使用情况调整每个非授权载波上的发送功率的值，以实现充分利用基站侧的发送功率的目的；同时能够有效减少基站侧的信令开销。
附图说明
图1示出了Wi-Fi***的干扰避免规则的示意图；
图2示出了根据本发明的一个实施例的在非授权频谱上设置每个非授权载波上的发送功率的方法的示意流程图；
图3示出了根据本发明的一个实施例的在非授权频谱上设置每个非授权载波上的发送功率的装置的示意框图；
图4示出了根据本发明的另一个实施例的在非授权频谱上设置每个非授权载波上的发送功率的方法的示意流程图；
图5示出了根据本发明的另一个实施例的在非授权频谱上设置每个非授权载波上的发送功率的装置的示意框图。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用其他不同于在此描述的其他方式来实施，因此，本发明 的保护范围并不受下面公开的具体实施例的限制。
图2示出了根据本发明的一个实施例的在非授权频谱上设置每个非授权载波上的发送功率的方法的示意流程图。
如图2所示，根据本发明的一个实施例的在非授权频谱上设置每个非授权载波上的发送功率的方法，适用于基站，包括：步骤202，将所述非授权频谱中的每个非授权载波上的发送功率的值设置为固定值和可变值；步骤204，根据所述每个非授权载波上的发送功率的固定值计算所述每个非授权载波上的CRS发送功率的固定值，并向用户设备通知所述每个非授权载波上的CRS发送功率的固定值；步骤206，根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值，以供所述用户设备根据所述每个非授权载波上的CRS发送功率的固定值和所述每个非授权载波上的CRS发送功率的可变值确定所述每个非授权载波上的CRS发送功率的值。
在该技术方案中，通过将每个非授权载波上的发送功率的值设置为固定值和可变值，根据每个非授权载波上的发送功率的固定值确定每个非授权载波上的CRS发送功率的固定值，并向用户设备通知每个非授权载波上的CRS发送功率的固定值，以及根据非授权频谱中的所有非授权载波的使用情况向用户设备通知每个非授权载波上的CRS发送功率的可变值，使得能够实时根据所有非授权载波的使用情况调整每个非授权载波上的发送功率的值，以实现充分利用基站侧的发送功率的目的；同时，由于每次向用户设备通知时仅仅通知的是每个非授权载波上的CRS发送功率的可变值，因此能够有效减少基站侧的信令开销。
计算所述每个非授权载波上的发送功率的固定值的方案主要包括：
方案一：根据所述非授权频谱上的所有非授权载波的数量和所述基站的发送总功率，计算所述每个非授权载波上的发送功率的固定值。
具体地，每个非授权载波上的发送功率的固定值等于基站的发送总功率除以所有非授权载波的数量，即每个非授权载波上的发送功率的固定值相同。
方案二：
根据所述每个非授权载波所在的频点和/或所述每个非授权载波被占用情况设置所述每个非授权载波上的发送功率的固定值。该方案中，每个非授权载波上的发送功率的固定值可以相同也可以不同。具体地，比如频点高，则发送功率固定值高；周围***使用该载波较多，则该载波上发送功率固定值高。
在上述技术方案中，优选地，根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值的步骤具体包括：
根据所述非授权频谱中的所有非授权载波的使用情况确定所述每个非授权载波上的发送功率是否具有可变值，并根据确定结果向所述用户设备通知所述每个非授权载波上的CRS发送功率是否具有可变值；以及在确定任一非授权载波上的发送功率具有可变值时，根据所述任一非授权载波上的发送功率的可变值计算所述任一非授权载波上的CRS发送功率的可变值，并向所述用户设备通知所述任一非授权载波上的CRS发送功率的可变值的取值。
具体地，在向用户设备通知每个非授权载波上的CRS发送功率的可变值时可以先通知用户设备该非授权载波上的CRS发送功率是否具有可变值，即根据每个非授权载波上的发送功率是否具有可变值来确定，若确定任一非授权载波上的CRS发送功率具有可变值时，根据该非授权载波上的发送功率的可变值计算出该非授权载波上的CRS发送功率的可变值并通知给用户设备。
在上述技术方案中，优选地，通过RRC信令向所述用户设备通知所述每个非授权载波上的CRS发送功率是否具有可变值；以及通过DCI(Downlink Control Information，下行控制信令)信令向所述用户设备通知所述任一非授权载波上的CRS发送功率的可变值的取值。
具体地，由于DCI信令可随时进行发送，因此可以实时调整非授权载波上的CRS发送功率的可变值的取值。
在上述技术方案中，优选地，还包括：
若所述每个非授权载波上的发送功率相同，则根据所述非授权频谱上 信道空闲的非授权载波的数量、带宽、所述基站的发送总功率和所述每个非授权载波上的发送功率的固定值计算所述每个非授权载波上的发送功率的可变值；
若所述每个非授权载波上的发送功率不相同，则根据所述非授权频谱上信道空闲的非授权载波的数量、带宽、所述每个非授权载波上的发送功率的固定值之间的比例和所述基站的发送总功率和所述每个非授权载波上的发送功率的固定值，计算所述每个非授权载波上的发送功率的可变值。
在上述技术方案中，优选地，所述非授权频谱中的任一非授权载波上的发送功率的固定值为所述任一非授权载波上的发送功率的最小值。
图3示出了根据本发明的一个实施例的在非授权频谱上设置每个非授权载波上的发送功率的装置的示意框图。
如图3所示，根据本发明的一个实施例的在非授权频谱上设置每个非授权载波上的发送功率的装置300，适用于基站，包括：第一设置单元302、第一计算单元304、第一通知单元306和第二通知单元308。
其中，第一设置单元302，用于将所述非授权频谱中的每个非授权载波上的发送功率的值设置为固定值和可变值；第一计算单元304，用于根据所述每个非授权载波上的发送功率的固定值计算所述每个非授权载波上的CRS发送功率的固定值；第一通知单元306，用于并向用户设备通知所述每个非授权载波上的CRS发送功率的固定值；第二通知单元308，用于根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值，以供所述用户设备根据所述每个非授权载波上的CRS发送功率的固定值和所述每个非授权载波上的CRS发送功率的可变值确定所述每个非授权载波上的CRS发送功率的值。
在该技术方案中，通过将每个非授权载波上的发送功率的值设置为固定值和可变值，根据每个非授权载波上的发送功率的固定值确定每个非授权载波上的CRS发送功率的固定值，并向用户设备通知每个非授权载波上的CRS发送功率的固定值，以及根据非授权频谱中的所有非授权载波的使用情况向用户设备通知每个非授权载波上的CRS发送功率的可变 值，使得能够实时根据所有非授权载波的使用情况调整每个非授权载波上的发送功率的值，以实现充分利用基站侧的发送功率的目的；同时，由于每次向用户设备通知时仅仅通知的是每个非授权载波上的CRS发送功率的可变值，因此能够有效减少基站侧的信令开销。
在上述技术方案中，优选地，还包括：
第二计算单元310，用于根据所述非授权频谱上的所有非授权载波的数量和所述基站的发送总功率，计算所述每个非授权载波上的发送功率的固定值；具体地，每个非授权载波上的发送功率的固定值等于基站的发送总功率除以所有非授权载波的数量，即每个非授权载波上的发送功率的固定值相同。和/或
第二设置单元312，用于根据所述每个非授权载波所在的频点和/或所述每个非授权载波被占用情况设置所述每个非授权载波上的发送功率的固定值。具体地，比如频点高，则发送功率固定值高；周围***使用该载波较多，则该载波上发送功率固定值高。
在上述技术方案中，优选地，所述第二通知单元308具体用于：根据所述非授权频谱中的所有非授权载波的使用情况确定所述每个非授权载波上的发送功率是否具有可变值，并根据确定结果向所述用户设备通知所述每个非授权载波上的CRS发送功率是否具有可变值，并用于在确定任一非授权载波上的发送功率具有可变值时，根据所述任一非授权载波上的发送功率的可变值计算所述任一非授权载波上的CRS发送功率的可变值，并向所述用户设备通知所述任一非授权载波上的CRS发送功率的可变值的取值。
具体地，在向用户设备通知每个非授权载波上的CRS发送功率的可变值时可以先通知用户设备该非授权载波上的CRS发送功率是否具有可变值，即根据每个非授权载波上的发送功率是否具有可变值来确定，若确定任一非授权载波上的CRS发送功率具有可变值时，根据该非授权载波上的发送功率的可变值计算出该非授权载波上的CRS发送功率的可变值并通知给用户设备。
在上述技术方案中，优选地，所述第二通知单元308具体还用于：通 过RRC信令向所述用户设备通知所述每个非授权载波上的CRS发送功率是否具有可变值，并用于通过DCI信令向所述用户设备通知所述任一非授权载波上的CRS发送功率的可变值的取值。
具体地，由于DCI信令可随时进行发送，因此可以实时调整非授权载波上的CRS发送功率的可变值的取值。
在上述技术方案中，优选地，所述第二通知单元308具体用于：在所述每个非授权载波上的发送功率相同时，根据所述非授权频谱上信道空闲的非授权载波的数量、带宽、所述基站的发送总功率和所述每个非授权载波上的发送功率的固定值计算所述每个非授权载波上的发送功率的可变值；以及
在所述每个非授权载波上的发送功率不相同时，根据所述非授权频谱上信道空闲的非授权载波的数量、带宽、所述每个非授权载波上的发送功率的固定值之间的比例和所述基站的发送总功率和所述每个非授权载波上的发送功率的固定值，计算所述每个非授权载波上的发送功率的可变值。
在上述技术方案中，优选地，所述非授权频谱中的任一非授权载波上的发送功率的固定值为所述任一非授权载波上的发送功率的最小值。
本发明还提出了一种基站(图中未示出)，包括：如图3所示的在非授权频谱上设置每个非授权载波上的发送功率的装置300。
图4示出了根据本发明的另一个实施例的在非授权频谱上设置每个非授权载波上的发送功率的方法的示意流程图。
如图4所示，根据本发明的另一个实施例的在非授权频谱上设置每个非授权载波上的发送功率的方法，适用于用户设备，包括：步骤402，接收基站通知的所述非授权频谱中每个非授权载波上的CRS发送功率的固定值，并接收所述基站根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值；步骤404，根据所述固定值和所述可变值确定所述每个非授权载波上的CRS发送功率的值。
在该技术方案中，通过接收基站通知的每个非授权载波上的CRS发送功率的固定值和基站根据所有非授权载波的使用情况向用户设备通知每 个非授权载波上的CRS发送功率的可变值来确定每个非授权载波上的CRS发送功率的值，使得基站侧能够实时根据所有非授权载波的使用情况调整每个非授权载波上的CRS发送功率的值，以实现充分利用基站侧的发送功率的目的；同时，由于每次向用户设备通知时仅仅通知的是每个非授权载波上的CRS发送功率的可变值，因此能够有效减少基站侧的信令开销。
在上述技术方案中，优选地，根据所述固定值和所述可变值确定所述每个非授权载波上的CRS发送功率的值具体包括：
将所述可变值的取值和所述固定值的和值作为所述每个非授权载波上的CRS发送功率的值，即可变值是在固定值的基础上增加的一个值；或
将所述可变值的取值和所述固定值的乘积作为所述每个非授权载波上的CRS发送功率的值，即可变值是固定值的一个倍数值。
图5示出了根据本发明的另一个实施例的在非授权频谱上设置每个非授权载波上的发送功率的装置的示意框图。
如图5所示，根据本发明的另一个实施例的在非授权频谱上设置每个非授权载波上的发送功率的装置500，适用于用户设备，包括：接收单元502和处理单元504。
其中，接收单元502，用于接收基站通知的所述非授权频谱中每个非授权载波上的CRS发送功率的固定值，并接收所述基站根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值；处理单元504，用于根据所述固定值和所述可变值确定所述每个非授权载波上的CRS发送功率的值。
在该技术方案中，通过接收基站通知的每个非授权载波上的CRS发送功率的固定值和基站根据所有非授权载波的使用情况向用户设备通知每个非授权载波上的CRS发送功率的可变值来确定每个非授权载波上的CRS发送功率的值，使得基站侧能够实时根据所有非授权载波的使用情况调整每个非授权载波上的CRS发送功率的值，以实现充分利用基站侧的发送功率的目的；同时，由于每次向用户设备通知时仅仅通知的是每个非授权载波上的CRS发送功率的可变值，因此能够有效减少基站侧的信令 开销。
在上述技术方案中，优选地，所述处理单元504具体用于：将所述可变值的取值和所述固定值的和值作为所述每个非授权载波上的CRS发送功率的值，即可变值是在固定值的基础上增加的一个值；或
将所述可变值的取值和所述固定值的乘积作为所述每个非授权载波上的CRS发送功率的值，即可变值是固定值的一个倍数值。
本发明还提出了一种用户设备(图中未示出)，包括：如图5所示的在非授权频谱上设置每个非授权载波上的发送功率的装置500。
以下详细说明本发明的技术方案。
本发明的技术方案主要针对非授权载波上的功率分配方法和指示信令，具体方案如下：
1、将每个非授权载波的发送功率分成两个部分，一个部分是固定值部分，一个部分是可变值部分。
2、固定值部分用RRC信令通知UE(User Equipment，用户设备)，使用传统的方法：指示CRS的发送功率。
PDSCH(Physical Downlink Shared Channel，物理下行共享信道)的功率用相对值参数Pa和Pb来指示。其中，Pa值是没有CRS的symbol(符号)中的PDSCH的功率与CRS的功率比值；Pb是有CRS的symbol中的PDSCH的功率与没有CRS的symbol中的PDSCH的功率比值。
固定值部分的值可以用以下方案来确定：
方案一，每个载波的固定值相同，即每个载波的功率固定值部分等于基站发送总功率除以总载波数。
方案二，每个载波的固定值不相同，可以根据载波所在频点、载波被其它***如Wi-Fi或其它运营商的使用情况来决定每个载波的发送功率值。比如频点高，则发送功率高；周围***使用该载波较多，则该载波上发送功率高。
3、可变值部分的通知信令包含两个部分：
第一部分是用RRC信令通知是否有可变值部分，具体可以设计一个新的bool类型的变量，true为有可变值部分，标识支持发送功率的动态变 化；false为无可变值部分，标识发送功率值固定。
当RRC信令标识有可变值部分时，可变值部分的取值用DCI信令通知UE(即第二部分)，需要设计新的用于指示发送功率的DCI信令bit，如果可变值部分的可选值有M个，则bit数为log2(M)。
需要注意的是：
1)当功率发生变化时，CRS功率和PDSCH功率都增加，也就是说保持针对UE的Pa和针对cell的Pb不变。
2)可变值部分是当前时刻该载波的CRS发送功率绝对值针对RRC信令中的CRS(即固定值部分)的功率绝对值发送变化，可以有两种变现形式：一种是在RRC信令中的CRS功率绝对值基础上给一个增加值；另一种是在RRC信令中的CRS功率绝对值基础上给一个倍数值。
3)可变值部分的大小由正在使用的载波数决定：
如果每个正在使用的载波的功率一样，则每个载波当前的发送功率为基站总功率除以正在使用的载波数，进一步根据当前的载波发送功率计算出该载波上的CRS发送功率。若可变值是增加值，则等于当前计算出来的载波上的CRS发送功率－RRC信令中的CRS功率绝对值；若可变值是倍数值，则等于当前计算出来的载波上的CRS发送功率/RRC信令中的CRS功率绝对值。
如果每个正在使用的载波的功率不一样，则遵循RRC信令中的每个载波的CRS绝对值的比例分配当前每个载波的CRS发送功率，之后确认可变值部分的取值。
4)可变值的数目可以进行限制，比如限制为2个(需要1bit的DCI信令指示)以下或4(需要2bit的DCI信令指示)个以下或8(需要3bit的DCI信令指示)个以下。
以上结合附图详细说明了本发明的技术方案，本发明提出了一种新的在非授权频谱上设置每个非授权载波上的发送功率的方案，使得能够实时根据所有非授权载波的使用情况调整每个非授权载波上的发送功率的值，以实现充分利用基站侧的发送功率的目的；同时能够有效减少基站侧的信令开销。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (18)

  1. 一种在非授权频谱上设置每个非授权载波上的发送功率的方法，适用于基站，其特征在于，包括：
    将所述非授权频谱中的每个非授权载波上的发送功率的值设置为固定值和可变值；
    根据所述每个非授权载波上的发送功率的固定值计算所述每个非授权载波上的CRS发送功率的固定值，并向用户设备通知所述每个非授权载波上的CRS发送功率的固定值；
    根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值，以供所述用户设备根据所述每个非授权载波上的CRS发送功率的固定值和所述每个非授权载波上的CRS发送功率的可变值确定所述每个非授权载波上的CRS发送功率的值。
  2. 根据权利要求1所述的在非授权频谱上设置每个非授权载波上的发送功率的方法，其特征在于，还包括：
    根据所述非授权频谱上的所有非授权载波的数量和所述基站的发送总功率，计算所述每个非授权载波上的发送功率的固定值；和/或
    根据所述每个非授权载波所在的频点和/或所述每个非授权载波被占用情况设置所述每个非授权载波上的发送功率的固定值。
  3. 根据权利要求1所述的在非授权频谱上设置每个非授权载波上的发送功率的方法，其特征在于，根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值的步骤具体包括：
    根据所述非授权频谱中的所有非授权载波的使用情况确定所述每个非授权载波上的发送功率是否具有可变值，并根据确定结果向所述用户设备通知所述每个非授权载波上的CRS发送功率是否具有可变值；以及
    在确定任一非授权载波上的发送功率具有可变值时，根据所述任一非授权载波上的发送功率的可变值计算所述任一非授权载波上的CRS发送 功率的可变值，并向所述用户设备通知所述任一非授权载波上的CRS发送功率的可变值的取值。
  4. 根据权利要求3所述的在非授权频谱上设置每个非授权载波上的发送功率的方法，其特征在于，通过RRC信令向所述用户设备通知所述每个非授权载波上的CRS发送功率是否具有可变值；以及
    通过DCI信令向所述用户设备通知所述任一非授权载波上的CRS发送功率的可变值的取值。
  5. 根据权利要求3所述的在非授权频谱上设置每个非授权载波上的发送功率的方法，其特征在于，还包括：
    若所述每个非授权载波上的发送功率相同，则根据所述非授权频谱上信道空闲的非授权载波的数量、带宽、所述基站的发送总功率和所述每个非授权载波上的发送功率的固定值计算所述每个非授权载波上的发送功率的可变值；
    若所述每个非授权载波上的发送功率不相同，则根据所述非授权频谱上信道空闲的非授权载波的数量、带宽、所述每个非授权载波上的发送功率的固定值之间的比例和所述基站的发送总功率和所述每个非授权载波上的发送功率的固定值，计算所述每个非授权载波上的发送功率的可变值。
  6. 根据权利要求1至5中任一项所述的在非授权频谱上设置每个非授权载波上的发送功率的方法，其特征在于，所述非授权频谱中的任一非授权载波上的发送功率的固定值为所述任一非授权载波上的发送功率的最小值。
  7. 一种在非授权频谱上设置每个非授权载波上的发送功率的方法，适用于用户设备，其特征在于，包括：
    接收基站通知的所述非授权频谱中每个非授权载波上的CRS发送功率的固定值，并接收所述基站根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值；
    根据所述固定值和所述可变值确定所述每个非授权载波上的CRS发送功率的值。
  8. 根据权利要求7所述的在非授权频谱上设置每个非授权载波上的发送功率的方法，其特征在于，根据所述固定值和所述可变值确定所述每个非授权载波上的CRS发送功率的值具体包括：
    将所述可变值的取值和所述固定值的和值作为所述每个非授权载波上的CRS发送功率的值；或
    将所述可变值的取值和所述固定值的乘积作为所述每个非授权载波上的CRS发送功率的值。
  9. 一种在非授权频谱上设置每个非授权载波上的发送功率的装置，适用于基站，其特征在于，包括：
    第一设置单元，用于将所述非授权频谱中的每个非授权载波上的发送功率的值设置为固定值和可变值；
    第一计算单元，用于根据所述每个非授权载波上的发送功率的固定值计算所述每个非授权载波上的CRS发送功率的固定值；
    第一通知单元，用于并向用户设备通知所述每个非授权载波上的CRS发送功率的固定值；
    第二通知单元，用于根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值，以供所述用户设备根据所述每个非授权载波上的CRS发送功率的固定值和所述每个非授权载波上的CRS发送功率的可变值确定所述每个非授权载波上的CRS发送功率的值。
  10. 根据权利要求9所述的在非授权频谱上设置每个非授权载波上的发送功率的装置，其特征在于，还包括：
    第二计算单元，用于根据所述非授权频谱上的所有非授权载波的数量和所述基站的发送总功率，计算所述每个非授权载波上的发送功率的固定值；和/或
    第二设置单元，用于根据所述每个非授权载波所在的频点和/或所述每个非授权载波被占用情况设置所述每个非授权载波上的发送功率的固定值。
  11. 根据权利要求9所述的在非授权频谱上设置每个非授权载波上的 发送功率的装置，其特征在于，所述第二通知单元具体用于：
    根据所述非授权频谱中的所有非授权载波的使用情况确定所述每个非授权载波上的发送功率是否具有可变值，并根据确定结果向所述用户设备通知所述每个非授权载波上的CRS发送功率是否具有可变值，
    并用于在确定任一非授权载波上的发送功率具有可变值时，根据所述任一非授权载波上的发送功率的可变值计算所述任一非授权载波上的CRS发送功率的可变值，并向所述用户设备通知所述任一非授权载波上的CRS发送功率的可变值的取值。
  12. 根据权利要求11所述的在非授权频谱上设置每个非授权载波上的发送功率的装置，其特征在于，所述第二通知单元具体还用于：
    通过RRC信令向所述用户设备通知所述每个非授权载波上的CRS发送功率是否具有可变值，并用于通过DCI信令向所述用户设备通知所述任一非授权载波上的CRS发送功率的可变值的取值。
  13. 根据权利要求11所述的在非授权频谱上设置每个非授权载波上的发送功率的装置，其特征在于，所述第二通知单元具体用于：
    在所述每个非授权载波上的发送功率相同时，根据所述非授权频谱上信道空闲的非授权载波的数量、带宽、所述基站的发送总功率和所述每个非授权载波上的发送功率的固定值计算所述每个非授权载波上的发送功率的可变值；以及
    在所述每个非授权载波上的发送功率不相同时，根据所述非授权频谱上信道空闲的非授权载波的数量、带宽、所述每个非授权载波上的发送功率的固定值之间的比例和所述基站的发送总功率和所述每个非授权载波上的发送功率的固定值，计算所述每个非授权载波上的发送功率的可变值。
  14. 根据权利要求9至13中任一项所述的在非授权频谱上设置每个非授权载波上的发送功率的装置，其特征在于，所述非授权频谱中的任一非授权载波上的发送功率的固定值为所述任一非授权载波上的发送功率的最小值。
  15. 一种基站，其特征在于，包括：如权利要求9至14中任一项所述的在非授权频谱上设置每个非授权载波上的发送功率的装置。
  16. 一种在非授权频谱上设置每个非授权载波上的发送功率的装置，适用于用户设备，其特征在于，包括：
    接收单元，用于接收基站通知的所述非授权频谱中每个非授权载波上的CRS发送功率的固定值，并接收所述基站根据所述非授权频谱中的所有非授权载波的使用情况向所述用户设备通知所述每个非授权载波上的CRS发送功率的可变值；
    处理单元，用于根据所述固定值和所述可变值确定所述每个非授权载波上的CRS发送功率的值。
  17. 根据权利要求16所述的在非授权频谱上设置每个非授权载波上的发送功率的装置，其特征在于，所述处理单元具体用于：
    将所述可变值的取值和所述固定值的和值作为所述每个非授权载波上的CRS发送功率的值；或
    将所述可变值的取值和所述固定值的乘积作为所述每个非授权载波上的CRS发送功率的值。
  18. 一种用户设备，其特征在于，包括：如权利要求16或17所述的在非授权频谱上设置每个非授权载波上的发送功率的装置。
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US20130343288A1 (en) * 2012-06-21 2013-12-26 Nokia Corporation Power Control For LTE Deployment In Unlicensed Band

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