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WO2015131357A1 - Procédé et dispositif de contrôle de puissance de transmission - Google Patents

Procédé et dispositif de contrôle de puissance de transmission Download PDF

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Publication number
WO2015131357A1
WO2015131357A1 PCT/CN2014/072928 CN2014072928W WO2015131357A1 WO 2015131357 A1 WO2015131357 A1 WO 2015131357A1 CN 2014072928 W CN2014072928 W CN 2014072928W WO 2015131357 A1 WO2015131357 A1 WO 2015131357A1
Authority
WO
WIPO (PCT)
Prior art keywords
user equipment
transmit power
base station
power
network coverage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2014/072928
Other languages
English (en)
Chinese (zh)
Inventor
黎超
张兴炜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201480001640.2A priority Critical patent/CN105379367B/zh
Priority to PCT/CN2014/072928 priority patent/WO2015131357A1/fr
Publication of WO2015131357A1 publication Critical patent/WO2015131357A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non-transmission
    • H04W52/281—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non-transmission taking into account user or data type priority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/383—TPC being performed in particular situations power control in peer-to-peer links

Definitions

  • the present invention relates to communications technologies, and in particular, to a transmit power control method and device.
  • BACKGROUND With the continuous development of communication technologies, more and more user equipments need close-range data transmission, for example, data sharing, mutual transmission pictures, business cards, etc. are typical short-range communication.
  • D2D Device to Device
  • the first user equipment utilizes the frequency band resource of the cellular communication network to perform direct data transmission with the second user equipment.
  • the first user equipment needs to transmit the data to the second user equipment by using the maximum transmission power in order to ensure that the transmitted data can be received by the second user equipment within 1.7 km.
  • Embodiments of the present invention provide a method and a device for controlling a transmit power to control a transmit power of a user equipment in a D2D communication mode.
  • the embodiment of the present invention provides a user equipment, where the user equipment is a first user equipment, and includes:
  • a determining module configured to determine a transmit power when the first user equipment sends data to the second user equipment
  • the determining module is specifically configured to: determine, according to a communication service type, a transmit power when the first user equipment sends data to the second user equipment;
  • the communication service type includes a public safety emergency service and a non-public security common service, and the transmit power corresponding to the public safety emergency service is a first transmit power level, and the transmit power corresponding to the non-public security common service is a second a transmit power level, the first transmit power level being higher than the second transmit power level.
  • the non-public security common service includes a common service with different quality of service levels, and the second transmit power level And including a plurality of second transmit power sub-levels, where the second transmit power sub-level corresponding to the common service corresponds to the service quality of the common service.
  • the determining module is specifically configured to: determine, according to a communication service mode, a transmit power when the first user equipment sends data to the second user equipment;
  • the communication service mode includes normal mode communication, fallback mode communication, and interference mode communication.
  • the method further includes: a determining module, configured to determine, by the determining module, the first user equipment direction according to the communication service mode Before the transmit power of the second user equipment when transmitting data,
  • Determining whether the available channel is occupied if not, determining that the communication service mode is the normal communication mode, and if so, determining whether the operation on the occupied channel is a public safety emergency service, and if yes, determining the communication service mode Communicating for the fallback mode, if not, determining that the communication service mode is the interference mode communication.
  • the determining module is specifically configured to:
  • the sixth possible implementation manner of the first aspect further includes: a request sending module and a receiving module; a request sending module, configured to: when the first user equipment is located in a coverage area of the mobile communication network, send a power request message to the base station, where the power request message includes channel usage information acquired by the first user equipment, so that Determining, by the base station, the transmit power of the first user equipment according to the channel usage information;
  • the receiving module is configured to receive a power response message sent by the base station, where the power response message includes a transmit power of the first user equipment;
  • the determining module is further configured to: if the transmit power determined by the determining module is different from the transmit power determined by the base station, determine, that the transmit power determined by the base station is a transmit power when transmitting data to the second user equipment .
  • the method further includes: an information sending module, configured to The second user equipment sends the transmit power used by the first user equipment and/or the network coverage information of the first user equipment, so that the second user equipment determines the transmit power.
  • the embodiment of the present invention provides a user equipment, where the user equipment is a second user equipment, including:
  • a receiving module configured to receive network coverage information of the first user equipment sent by the first user equipment
  • a determining module configured to determine, according to the network coverage information of the first user equipment and the network coverage information of the second user equipment, a transmit power when the second user equipment sends data to the first user equipment.
  • the determining module includes:
  • a state determining unit configured to determine, according to network coverage information of the first user equipment and network coverage information of the second user equipment, a mobile network coverage status of the first user equipment and the second user equipment;
  • a power determining unit configured to determine, according to a mobile network coverage status of the first user equipment and the second user equipment, when the second user equipment sends data to the first user equipment Shooting power
  • the mobile network coverage status of the first user equipment and the second user equipment includes any one of the following forms:
  • the first user equipment and the second user equipment are located in a mobile network coverage area; the first user equipment and the second user equipment are not located in a mobile network coverage area; An area, where the second user equipment is not located in a mobile network coverage area;
  • the first user equipment is not located in a mobile network coverage area, and the second user equipment is located in a mobile network coverage area.
  • the power determining unit when the state determining unit determines that the first user equipment and the second user equipment are located in a mobile network a coverage area, where the first user equipment and the second user equipment are served by the first base station, the power determining unit is specifically configured to:
  • the state determining unit determines that the first user equipment and the second user equipment are located in a mobile network a coverage area, where the second user equipment is served by the second base station, and when the first user equipment is served by the third base station, the power determining unit is specifically configured to:
  • the state determining unit determines that the first user equipment and the second user equipment are both When not located in the coverage area of the mobile network
  • the power determining unit is specifically configured to:
  • the transmission power when transmitting data to the first user equipment is determined according to a communication service type or a communication service mode.
  • the power determining unit when the state determining unit determines that the first user equipment is not located in a mobile network coverage area, the power determining unit is specifically configured to:
  • the power determining unit is further configured to:
  • the power determining unit is further configured to:
  • the power determining unit is further configured to:
  • Determining the transmit power usable by the current channel according to the current communication service And determining, according to a transmit power that can be used by the current channel and the limited transmit power, a transmit power when the second user equipment sends data to the first user equipment.
  • the power determining unit when the state determining unit determines that the first user equipment is not located a mobile network coverage area, where the second user equipment is located in a mobile network coverage area, the power determining unit is further configured to:
  • Determining, by the second user equipment, the second user equipment according to the transmit power that can be used on the channel corresponding to the second base station communication, the transmit power allowed by the second user equipment, and the limited transmit power The transmit power of the second base station when transmitting data.
  • the power determining unit when the state determining module determines that the first user equipment is located in a mobile network coverage area, the second user equipment When not located in the mobile network coverage area, the power determining unit is specifically configured to: transmit power adjustment information or transmit resource adjustment information to the first user equipment;
  • an embodiment of the present invention provides a method for controlling a transmit power, including:
  • the determining, by the first user equipment, the transmit power when the first user equipment sends data to the second user equipment includes:
  • the communication service type includes a public safety emergency service and a non-public security common service
  • the transmit power corresponding to the public safety emergency service is a first transmit power level
  • the transmit power corresponding to the non-public security common service is a second a transmit power level, the first transmit power level being higher than the second transmit power level.
  • the non-public security common service includes a common service with different quality of service levels, and the second transmit power level And including a plurality of second transmit power sub-levels, where the second transmit power sub-level corresponding to the common service corresponds to the service quality of the common service.
  • the determining, by the first user equipment, the transmit power when the first user equipment sends data to the second user equipment includes:
  • the communication service mode includes normal mode communication, fallback mode communication, and interference mode communication.
  • the first user equipment determines, according to the communication service mode, that the first user equipment sends data to the second user equipment Before the transmit power, it also includes:
  • the first user equipment determines an available channel for transmitting data to the second user equipment
  • the first user equipment Determining, by the first user equipment, whether the available channel is occupied. If not, the first user equipment determines that the communication service mode is the normal communication mode, and if yes, the first user equipment determines the occupied channel. Whether the first user equipment determines that the communication service mode is the fallback mode communication, and if not, the first user equipment determines that the communication service mode is the interference Mode communication.
  • the first user equipment determines, according to the communication service mode, that the first user equipment sends data to the second user equipment Transmit power, including:
  • the first user equipment determines, according to the type of communication service, the transmit power when the data is sent to the second user equipment, and sends the data to the second user equipment on the available channel that is not occupied. Data; or
  • the first user equipment determines that the transmit power when the data is sent to the second user equipment is lower than the first user equipment sends the data to the second user equipment when performing the public security emergency service. Transmitting power; or
  • the first user equipment determines, according to the interference condition of the available channel, the transmit power when transmitting data to the second user equipment.
  • the first user equipment is located in a mobile communication network coverage In the area, the first user equipment sends a power request message to the base station, where the power request message includes channel usage information acquired by the first user equipment, so that the base station determines the number according to the channel usage information.
  • the transmission power of a user equipment
  • the first user equipment determines that the transmit power determined by the first user equipment is different from the transmit power determined by the base station, the first user equipment determines that the transmit power determined by the base station is to the second user. The transmit power when the device sends data.
  • the method further includes:
  • an embodiment of the present invention provides a method for controlling a transmit power, including:
  • the second user equipment determines, according to network coverage information of the first user equipment and network coverage information of the second user equipment, And the second user equipment determines, according to the network coverage information of the first user equipment and the network coverage information of the second user equipment, that the second user equipment sends the data to the first user equipment. a mobile network coverage status of the first user equipment and the second user equipment;
  • the mobile network coverage status of the first user equipment and the second user equipment includes any one of the following forms:
  • the first user equipment and the second user equipment are located in a mobile network coverage area; the first user equipment and the second user equipment are not located in a mobile network coverage area; An area, where the second user equipment is not located in a mobile network coverage area;
  • the first user equipment is not located in a mobile network coverage area, and the second user equipment is located in a mobile network coverage area.
  • the second user equipment is configured according to the mobile network of the first user equipment and the second user equipment
  • the coverage state, determining the transmit power when the second user equipment sends data to the first user equipment includes:
  • the second user equipment determines that the first user equipment and the second user equipment are located in a mobile network coverage area, where the first user equipment and the second user equipment are served by the first base station, The second user equipment transmits the power adjustment information to the first base station, where the power adjustment information is used to instruct the first base station to adjust the transmit power and/or the time-frequency resource of the first user equipment, and the second user The transmit power and/or time-frequency resources of the device;
  • the second user equipment receives the power adjustment response information sent by the first base station, and determines, according to the power adjustment response information, the transmit power when the second user equipment sends data to the first user equipment.
  • the second user equipment is configured according to the mobile network of the first user equipment and the second user equipment
  • the coverage state, determining the transmit power when the second user equipment sends data to the first user equipment includes:
  • the second user equipment determines that the first user equipment and the second user equipment are located in a mobile network coverage area, the second user equipment is served by a second base station, and the first user equipment is served by a third base station.
  • the second user equipment sends power adjustment information to the second base station, where the power adjustment information is used to instruct the second base station to adjust transmit power and/or time-frequency resources of the first user equipment, and Instructing the second base station to communicate with the third base station, so that the third base station adjusts transmit power and/or time-frequency resources of the first user equipment;
  • the second user equipment receives the power adjustment response information sent by the second base station, and determines, according to the power adjustment response information, a transmit power when the second user equipment sends data to the first user equipment.
  • the second user equipment is configured according to the mobile network of the first user equipment and the second user equipment
  • the coverage state, determining the transmit power when the second user equipment sends data to the first user equipment includes:
  • the second user equipment determines that the first user equipment and the second user equipment are not located in the mobile network coverage area
  • the second user equipment determines to the first according to the communication service type or the communication service mode. Transmit power when the user equipment sends data.
  • the second user equipment is configured according to the mobile network of the first user equipment and the second user equipment
  • the coverage state, determining the transmit power when the second user equipment sends data to the first user equipment includes:
  • the second user equipment determines that the first user equipment is not located in the coverage area of the mobile network, and the second user equipment is located in the coverage area of the mobile network, the second user equipment acquires the transmission used by the first user equipment Power
  • the second user equipment determines, according to the limited transmit power, the second user equipment The transmit power when the first user equipment sends data includes:
  • the second user equipment determines, according to the limited transmit power, the second user equipment The transmit power when the first user equipment sends data includes:
  • the second user equipment sends the limited transmit power and the time-frequency resource limited by the second user equipment to the second base station, where the second base station serves the second user equipment;
  • the second user equipment determines, according to the limited transmit power, the second user equipment The transmit power when the first user equipment sends data includes:
  • the first user equipment is not located in a mobile network coverage area
  • the method further includes:
  • the second user equipment acquires transmit power that can be used on a channel corresponding to the communication with the second base station, transmit power allowed by the second user equipment, and the limited transmit power, where the second base station service station Said second user equipment;
  • the second user equipment is configured according to the mobile network of the first user equipment and the second user equipment
  • the coverage state, determining the transmit power when the second user equipment sends data to the first user equipment includes:
  • the second user equipment determines that the first user equipment is located in a mobile network coverage area, and the second user equipment is not located in a mobile network coverage area, the second user equipment is in the first User equipment transmitting power adjustment information or transmitting resource adjustment information;
  • the second user equipment determines, according to the adjusted transmit power or the adjusted transmit resource of the first user equipment, a transmit power when the second user equipment sends data to the first user equipment.
  • the determining module determines a transmit power when the first user equipment sends data to the second user equipment, and the data sending module sends the data to the second user equipment by using the transmit power, so that the D2D communication can be implemented.
  • the transmit power of the first UE is controlled instead of the inherent maximum transmit power.
  • Embodiment 1 is a schematic structural diagram of Embodiment 1 of a first user equipment according to the present invention
  • Embodiment 2 is a schematic structural diagram of Embodiment 2 of a first user equipment according to the present invention
  • Embodiment 3 is a schematic structural diagram of Embodiment 3 of a first user equipment according to the present invention.
  • Embodiment 4 is a schematic structural diagram of Embodiment 4 of a first user equipment according to the present invention.
  • FIG. 5 is a schematic structural diagram of Embodiment 1 of a second user equipment according to the present invention.
  • Embodiment 2 of a second user equipment according to the present invention.
  • FIG. 7 is a schematic diagram of a coverage state of a user equipment mobile network
  • Embodiment 8 is a schematic flowchart of Embodiment 1 of a method for controlling a transmit power according to the present invention
  • Embodiment 9 is a schematic flowchart of Embodiment 2 of a method for controlling a transmit power according to the present invention.
  • Embodiment 3 is a schematic flowchart of Embodiment 3 of a method for controlling a transmit power according to the present invention
  • Embodiment 5 of a first user equipment according to the present invention.
  • FIG. 12 is a schematic structural diagram of Embodiment 3 of a second user equipment according to the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention. It is clear that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.
  • FIG. 1 is a schematic structural diagram of Embodiment 1 of a first user equipment according to the present invention.
  • the first user equipment in this embodiment may be any user equipment.
  • the user equipment is referred to as a first user equipment.
  • the first user equipment 10 provided by the embodiment of the present invention includes a determining module 101 and a data sending module 102. among them,
  • the determining module 101 is configured to determine a transmit power when the first user equipment sends data to the second user equipment;
  • the data sending module 102 is configured to send data to the second user equipment by using the transmit power.
  • the first user equipment (User Equipment, referred to as UE) in this embodiment is a user equipment in a D2D communication scenario.
  • the first UE may send data to the second UE by means of unicast, multicast, or broadcast, and the second UE may also send data to the first UE by means of unicast, multicast, or broadcast, thereby implementing the first UE and the first UE.
  • Two UE D2D communication A person skilled in the art may understand that, in this embodiment, the process of sending data to the second UE by the first UE may be unicast, multicast, or broadcast, and the second UE sends data to the first UE. The process can also be unicast, multicast or broadcast.
  • the determining module 101 needs to determine the transmit power when the data is transmitted.
  • the determining module 101 can determine the transmit power according to the communication service type or the communication service mode. For example, when the communication service type is public safety emergency service, the determining module 101 determines that the transmission power is the first transmission power level, specifically, the first transmission power level may correspond to the maximum transmission power of the first UE; when the communication service type is non- In the case of public safety general service, the determining module 101 determines that the transmission power is the second transmission power level. Wherein the first transmit power level is higher than the second power transmission level.
  • the data sending module 102 transmits data to the second user equipment using the transmit power.
  • the determining module determines a transmit power when the first user equipment sends data to the second user equipment, and the data sending module sends the data to the second user equipment by using the transmit power, so that the D2D communication can be implemented.
  • the transmit power of the first UE is controlled instead of the inherent maximum transmit power. The process of determining the transmit power by the determining module 101 of the first UE is described below using a specific embodiment.
  • the determining module 101 is specifically configured to: determine, according to a communication service type, a transmit power when the first user equipment sends data to the second user equipment.
  • the communication service type includes a public safety emergency service and a non-public security common service, and the transmit power corresponding to the public safety emergency service is a first transmit power level, and the transmit power corresponding to the non-public security common service is a second a transmit power level, the first transmit power level being higher than the second transmit power level.
  • the current D2D application scenarios mainly include public security emergency services and non-public security common services.
  • Non-Public Security Ordinary Services can be further subdivided according to the Quality of Service (QoS) level. Different QoS levels have different priorities.
  • QoS levels have different priorities.
  • different communication service types correspond to different transmission powers of the first UE, so that a higher-level communication service can obtain a more guaranteed service.
  • the determining module 101 may determine the communication service type according to the communication service type indication; or when the network coverage is present, the determining module 101 obtains the authorization authentication method by transmitting the key used by the public security emergency service to the serving base station. , to gain access to public safety emergency services.
  • the first transmission power level that is, the highest level, is configured for the public safety emergency service.
  • the maximum transmit power value of the first transmit power level corresponding to the operation can be set to 31 dBm, because in the public safety event, it is possible that the existing communication means will fail, such as the earthquake scene, where the traditionally used cellular network may already have can not be used.
  • the determining module 101 determines that the communication service type is non-public In the case of a secure normal service, a second transmit power level is configured for the non-public security common service, the second transmit power level is lower than the first power transmit level, and the allowed maximum transmit power value corresponding to the second transmit power level may be set to 23dBm.
  • non-Public Security common service includes common services of different quality of service levels
  • the second transmit power level includes multiple second transmit power sub-levels
  • the second transmit power sub-level corresponding to the common service corresponds to the service quality of the ordinary service. , as shown in Table 2.
  • the determining module 101 can determine the communication service type according to the communication service type indication.
  • the session service includes voice and video conferencing, and this service has the highest requirements for quality of service and real-time.
  • Streaming services include streaming audio and video, followed by quality of service and real-time requirements.
  • the interactive services include web browsing and other services, and the background business includes emails, short messages, and the like. Interactive business and background business have the lowest requirements for quality of service and real-time.
  • the first public security scenario the first
  • the first UE can use the normal smaller transmit power.
  • each service can select a certain transmit power value under the limit of the maximum transmit power allowed, and when the quality of service cannot meet the requirements, the transmit power can be increased step by step. Or, directly, the first UE starts transmitting signals according to the maximum allowed transmit power value corresponding to its communication service type.
  • the transmit power corresponding to the public safety emergency service has a certain impact on the non-public security common service, and therefore, the non-essential case, the first UE cannot use the transmit power corresponding to the public safety emergency service, public.
  • the time required for safe emergency services needs to be limited.
  • the first user equipment 10 provided by the embodiment of the present invention further includes a determining module 103, as shown in FIG. 2 .
  • FIG. 2 is a schematic structural diagram of Embodiment 2 of a first user equipment according to the present invention.
  • the determining module 101 is specifically configured to: determine, according to the communication service mode, a transmit power when the first user equipment sends data to the second user equipment;
  • the communication service mode includes a normal mode communication, a fallback mode communication, and an interference mode communication.
  • the determining module 103 is configured to: before the determining module 101 determines, according to the communication service mode, the transmit power when the first user equipment sends data to the second user equipment,
  • Determining whether the available channel is occupied if not, determining that the communication service mode is the normal communication mode, and if so, determining whether the operation on the occupied channel is a public safety emergency service, and if yes, determining the communication service mode Communicating for the fallback mode, if not, determining that the communication service mode is the interference mode communication.
  • a channel in which a first UE can transmit data is divided into a plurality of small subchannels in a frequency domain, and different UEs select a partial subchannel to transmit.
  • the available channels involved are specifically available subchannels.
  • the decision module 103 determines all available channels. The method of determining the available channels is: if there is network coverage, the indication signaling of the available channel configuration resources is obtained from the network; if there is no network coverage, the set of all available channels is determined in a predefined manner.
  • the determining module 103 determines whether the available channel is occupied according to the received signal power on the available channel, and the criterion for determining is whether the received signal power is lower than a specific threshold, such as a reference signal on the subcarrier under the LTE system parameter. If the Receive Signal Received Power (RSRP) is not greater than -112dBm, it is considered to be an available channel, otherwise it is considered as an occupied channel. If there is an available channel that is not occupied, the judging module 103 determines that the communication service mode is the normal communication mode.
  • RSRP Receive Signal Received Power
  • the judging module 103 needs to further detect whether a public safety emergency service is being transmitted on the available channel that has been occupied, and if so, the judging module 103 determines that the communication service mode is the fallback mode communication, and if not, the judging module 103
  • the communication service mode is determined to be interference mode communication.
  • the method for judging whether the channel is occupied by the public safety emergency service in addition to determining the RSRP value, further needs to receive the indication signaling of the public safety emergency service used in the high RSRP value channel.
  • the method for judging whether the channel is occupied by the public safety emergency service may also be: reading the indication signaling used by the public safety emergency service of each channel in the broadcast control channel.
  • the method for determining that the current channel is in the interference mode is to determine whether the RSRP value on the detected channel is greater than a specific threshold 1 (eg, -112 dBm) and less than the upper limit 2 of the available RSRP value (eg, -100 dBm), if these conditions are met, It indicates that the channel is in interference mode.
  • a specific threshold 1 eg, -112 dBm
  • the determining module 101 determines, according to the communication service mode, the transmit power when the first user equipment sends data to the second user equipment, according to different communication service modes, specifically
  • the implementation is as follows.
  • the determining module 101 determines the transmit power when the first user equipment sends data to the second user equipment according to the type of communication service, and transmits the data to the second user equipment on the available channel that is not occupied.
  • the determining module 101 determines the transmit power when the first user equipment sends data to the second user equipment according to the type of the communication service. For details, refer to the description of the foregoing embodiment, which is not described herein again.
  • the determining module 101 determines that the transmit power when transmitting data to the second user equipment is lower than the transmit power when the first user equipment transmits data to the second user equipment when performing public safety emergency services.
  • the determining module 101 will try not to use the channel in which the public safety emergency service is in use, and if it cannot be avoided (e.g., all available channels are occupied by the public safety emergency service), the determining module 101 communicates using the back-off mode. In the fallback mode communication, the determining module 101 determines that the transmit power when transmitting data to the second user equipment is lower than the transmit power when the first user equipment transmits data to the second user equipment when performing the public safety emergency service.
  • the determining module 101 determines the transmission power when transmitting data to the second user equipment according to the interference condition of the available channel.
  • the available channel to be used by the determining module 101 has been used by other UEs in normal mode communication. That is, there is interference in this available channel, and the first UE communication service mode belongs to the interference mode communication.
  • the determination module 101 can use a slightly lower transmission power than the normal mode communication to reduce the impact on the UE that is transmitting data.
  • the determining module 101 sets its own transmit power according to the interference condition of the available channel to be transmitted to ensure that the target receiver can obtain a signal of a certain strength.
  • the interference condition includes the interference signal strength.
  • the transmit power of the first UE may be determined according to the foregoing method.
  • FIG. 3 is a schematic structural diagram of Embodiment 3 of a first user equipment according to the present invention.
  • the first user equipment 10 further includes: a request sending module 104 and a receiving module 105, based on the embodiments of FIG. 1 and FIG. 2 . In the present embodiment, on the basis of the embodiment of Fig. 2, Fig. 3 is illustrated.
  • the request sending module 104 is configured to: when the first user equipment is located in a coverage area of the mobile communication network, send a power request message to the base station, where the power request message includes channel usage information acquired by the first user equipment, The base station determines, according to the channel usage information, a transmit power of the first user equipment;
  • the receiving module 105 is configured to receive a power response message sent by the base station, where the power response message includes a transmit power of the first user equipment;
  • the determining module 101 is further configured to: if the transmit power determined by the determining module is different from the transmit power determined by the base station, determine, that the transmit power determined by the base station is a transmit when sending data to the second user equipment power.
  • the request sending module 104 to the base station (including various types of base station equipment, such as a macro station, a micro station, a pico station, and also a relay relay node for relaying) Transmitting a power request message, where the power request message includes channel usage information acquired by the first user equipment (ie, including one or more of the following information: which channels are fully available, and which channels are in an interference state (including a level of interference power), The channel is used by the emergency service, etc., and the base station determines the transmit power of the first user equipment according to the channel usage information.
  • the receiving module 105 receives the power response message sent by the base station, where the power response message includes the transmit power of the first user equipment. If the determining module 101 determines that the transmit power determined by the first user equipment is different from the transmit power determined by the base station, determining that the base station determines The transmit power is the transmit power when transmitting data to the second user equipment.
  • the first user equipment determines the transmit power when the first user equipment sends data to the second user equipment, and the first user equipment sends the data to the second user equipment by using the transmit power,
  • the transmit power of the first UE is controlled instead of the inherent maximum transmit power.
  • FIG. 4 is a schematic structural diagram of Embodiment 4 of a first user equipment according to the present invention.
  • the embodiment of the present invention is based on the embodiment of FIG. 1 to FIG. 3, the first user equipment 10 further includes: an information sending module 106. This embodiment is illustrated on the basis of the embodiment of Fig. 3.
  • the information sending module 106 is configured to send, to the second user equipment, the transmit power used by the first user equipment and/or the network coverage information of the first user equipment, so that the second user equipment determines the transmit power. .
  • the first user equipment provided by the embodiment of the present invention may not only determine the transmit function of the first user equipment.
  • the rate may also cause the second user equipment to determine the transmit power.
  • FIG. 5 is a schematic structural diagram of Embodiment 1 of a second user equipment according to the present invention.
  • the second user equipment in this embodiment may be any user equipment.
  • the user equipment is referred to as a second user equipment.
  • the second user equipment 20 provided by the embodiment of the present invention includes: a receiving module 201 and a determining module 202.
  • the receiving module 201 is configured to receive network coverage information of the first user equipment sent by the first user equipment.
  • the determining module 202 is configured to determine, according to the network coverage information of the first user equipment and the network coverage information of the second user equipment, a transmit power when the second user equipment sends data to the first user equipment.
  • the receiving module 201 receives the D2D signal sent by the first UE.
  • the first UE sends the network coverage information to the second UE by sending a D2D signal.
  • the D2D signal sent by the first UE is sent on the D2D resource, and is different from the uplink signal in the network sent by the first UE.
  • the resources used for sending are different, and the format and mode of the signal when sending are different.
  • the resources of the D2D link are resources taken in the uplink of Long Term Evolution (LTE).
  • LTE Long Term Evolution
  • the first UE transmits a D2D signal on the cellular link, which is also in the uplink, but the location of the time-frequency resource is different from the uplink signal.
  • the second UE detects the existing cellular network and determines whether the local machine has camped under one of the networks. For example, the second UE detects and resides in a network of a Global System for Mobile communication (GSM) network, or a network of the 3rd Generation Mobile Communication (3G), or a long-term The evolution of the Long Term Evolution (LTE) network is equal.
  • GSM Global System for Mobile communication
  • 3G 3rd Generation Mobile Communication
  • LTE Long Term Evolution
  • the determining module 202 determines, according to the network coverage information of the first UE and the network coverage information of the second UE, the mobile network coverage status of the first UE and the UE, and the determining module 202 determines, according to the mobile network coverage status of the first UE and the second UE, The transmit power when the UE sends data to the first UE.
  • the second user equipment provided by the embodiment of the present invention receives, by the receiving module, network coverage information of the first user equipment that is sent by the first user equipment, and the determining module is configured according to the first user equipment.
  • the network coverage information and the network coverage information of the second user equipment determine the transmit power when the second user equipment sends data to the first user equipment, so that the second UE may be controlled to be transmitted in the D2D communication mode. Power, not the inherent maximum transmit power.
  • FIG. 6 is a schematic structural diagram of Embodiment 2 of a second user equipment according to the present invention.
  • the present embodiment is based on the embodiment of FIG. 5, and the determining module 202 includes:
  • a state determining unit 2021 configured to determine, according to network coverage information of the first user equipment and network coverage information of the second user equipment, a mobile network coverage status of the first user equipment and the second user equipment;
  • the power determining unit 2022 is configured to determine, according to the mobile network coverage status of the first user equipment and the second user equipment, a transmit power when the second user equipment sends data to the first user equipment;
  • the mobile network coverage status of the first user equipment and the second user equipment includes any one of the following forms:
  • the first user equipment and the second user equipment are located in a mobile network coverage area; the first user equipment and the second user equipment are not located in a mobile network coverage area; An area, where the second user equipment is not located in a mobile network coverage area;
  • the first user equipment is not located in a mobile network coverage area, and the second user equipment is located in a mobile network coverage area.
  • FIG. 7 is a schematic diagram of the coverage state of the mobile network of the user equipment.
  • each UE is distinguished according to the manner of UE1 to UE6.
  • the mobile network coverage status of the first UE and the second UE includes any one of the following: the first UE (UE4) and the second UE (UE5) are located in a mobile network coverage area;
  • the first UE (UE1) and the second UE (UE3) are not located in the mobile network coverage area; the first UE (UE7) is located in the mobile network coverage area, and the second UE (UE8) is not located in the mobile network coverage area;
  • the first UE (UE1) is not located in the mobile network coverage area, and the second UE (UE2) is located in the mobile network coverage area.
  • the power determining unit 2022 is based on the first The network coverage information of the UE and the network coverage information of the second UE determine the transmission power when the second UE sends data to the first UE, including four cases.
  • the state determining unit 2021 determines that the first UE (UE5) and the second UE (UE4) are located in the mobile network coverage area.
  • the power determining unit 2022 is specifically configured to:
  • the first UE and the second UE are served by the same base station, but the first UE and the second UE belong to different D2D communication groups.
  • the second UE may request the first base station to re-adjust the transmit power used by the first UE and/or the second UE and/or the time-frequency resources used to coordinate the D2D link between the two communication groups.
  • the state determining unit 2021 determines that the first user equipment and the second user equipment are located in a mobile network coverage area, the second user equipment is served by a second base station, where the When a user equipment is served by the third base station (not shown in FIG. 7), the power determining unit 2022 is specifically configured to:
  • the second UE may adjust power and/or the first UE.
  • the request for the time-frequency resource is sent to the second base station, and then the second base station requests the third base station to reconfigure the power and/or the time-frequency resource for the first UE through the X2 interface.
  • the power determining unit 2022 is specifically configured to determine the direction according to the communication service type or the communication service mode. Transmit power when the first UE transmits data.
  • the second UE determines, according to the communication service type or the communication service mode, the implementation manner of the transmit power when the data is sent to the first UE, and determines, according to the communication service type or the communication service mode, the first UE to send to the second UE.
  • the implementation of the transmit power in the data is similar. For details, refer to the foregoing embodiment, and details are not described herein again.
  • the power determining unit 2022 is specifically configured to:
  • the power determining unit 2022 determines the transmission power according to the principle that the second UE tries to avoid interference to the first UE.
  • the calculation method is: when the first UE transmits a signal, it needs to indicate its transmission power Ptx to the second UE that receives the transmission signal. After receiving the information of the transmit power value Ptx indicated by the first UE, the power determining unit 2022 further measures the measured transmit power Rtx from the first UE signal, and the power determining unit 2022 calculates the first UE to the second UE.
  • the power determining unit 2022 determines, according to the limited transmit power, the transmit power when the second UE transmits data to the first UE. It includes the following possible implementations:
  • the power determining unit 2022 is further configured to: send the limited transmit power to a second base station, where the second base station serves the second user equipment; and receive the second base station Transmitted power when the second user equipment sends data to the first user equipment.
  • the power determining unit 2022 is further configured to: send, to the second base station, the limited transmit power and the second user equipment limited time-frequency resource, where the second base station Serving the second user equipment; receiving, by the second base station, a transmit power when the second user equipment sends data to the first user equipment, and a time frequency configured by the second base station for the second user equipment Resources.
  • the power determining unit 2022 reports the limited transmit power value Ptx_m and the corresponding limited time-frequency resource to the second base station, and the second base station re-allocates the time-frequency resource and/or the transmit power value for transmitting for the second UE. .
  • the second base station re-allocates the time-frequency resource and/or the transmit power value for transmitting for the second UE.
  • the second UE may request the second base station to reallocate the available D2D transmission resources for the second UE.
  • the second UE transmits the cellular link, one way is that the second UE can evade the transmission of the D2D link of the first UE on the network by requiring the second base station to exchange time-frequency resources for it.
  • the transmit power of the second UE is adjusted, the Modulation and Coding Scheme (MCS) level that can be supported also changes, and the number of time-frequency resources that need to be used also occurs.
  • the second base station is required to re-assign the time-frequency resources (including the size and location of the resources) for transmission to the second UE.
  • the power determining unit 2022 is further specifically configured to:
  • the second UE determines its own transmit power.
  • the second UE can communicate using two links.
  • One link is a D2D link (UE2-UE1), and under the D2D link, the second UE can directly communicate with the first UE.
  • One is a cellular link (UE2-second).
  • the second base station communicates with the second base station of the second base station of the second UE, and the second UE communicates with the second base station to implement communication between the second UE and other UEs (for example, UE6).
  • the second UE may take the minimum transmit value (Ptx, Ptx) of the transmit power Ptx and the limited transmit power Ptx-m corresponding to the current channel corresponding to the current communication service as its own transmission.
  • Power, BP: Ptx Min(Ptx_c, Ptx m), thereby communicating with the first UE.
  • the power determining unit 2022 when the state determining unit 2021 determines that the first user equipment is not located in the mobile network coverage area, and the second user equipment is located in the mobile network coverage area, the power determining unit 2022 The method is further configured to: obtain transmit power that can be used on a channel corresponding to the second base station, transmit power that is allowed by the second user equipment, and the limited transmit power, where the second base station serves the Two user equipment;
  • Determining, by the second user equipment, the second user equipment according to the transmit power that can be used on the channel corresponding to the second base station communication, the transmit power allowed by the second user equipment, and the limited transmit power The transmit power of the second base station when transmitting data.
  • the second UE For the cellular link, the second UE from the current cellular link, the second UE to each channel, such as a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (Physical Uplink Control Channel) , referred to as: PUCCH), Sounding Reference Signal (SRS), determine the transmit power P alpha that can be used for each channel (here, alpha represents one or more of PUSCH, PUCCH, SRS channel or signal), and What is the allowed transmit power of the UE?
  • PUSCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • SRS Sounding Reference Signal
  • Ptx Min(P CMAx , e , P alpha , Ptx m), so that the transmit power corresponding to the minimum value is used to communicate with the second base station.
  • the power determining unit 2022 is specifically configured to: Transmitting power adjustment information or transmitting resource adjustment information by the first user equipment;
  • the second UE may attempt to establish a D2D link with the first UE, and then the power determining unit 2022 requests the first UE to reconfigure the transmit power or reallocate the transmitted time-frequency resource.
  • the first UE may decide or report the corresponding request information to the serving base station of the local device, and request the serving base station of the local device to help determine whether the request of the second UE is met and how to satisfy the request of the second UE.
  • the second user equipment receives the network coverage information of the first user equipment that is sent by the first user equipment by using the receiving module, and the determining module is configured according to the network coverage information and the information of the first user equipment.
  • the network coverage information of the second user equipment determines the transmit power when the second user equipment sends data to the first user equipment, so that the transmit power of the second UE can be controlled in the D2D communication mode instead of adopting The inherent maximum transmit power.
  • FIG. 8 is a schematic flowchart of Embodiment 1 of a method for controlling transmit power according to the present invention.
  • the execution of the method is any user equipment, and the user equipment can be implemented by any software and/or hardware.
  • the user equipment is referred to as a first user equipment.
  • the transmit power control method provided by this embodiment includes:
  • Step 801 The first user equipment determines a transmit power when the first user equipment sends data to the second user equipment.
  • Step 802 The first user equipment sends data to the second user equipment by using the transmit power.
  • the power control method provided by the embodiment of the present invention can be implemented by the first user equipment provided by the foregoing embodiment, and the implementation principle and the technical effect are similar.
  • the first user equipment determines, according to the type of communication service, a transmit power when the first user equipment sends data to the second user equipment.
  • the communication service type includes a public security emergency service and a non-public security common service
  • the transmit power corresponding to the public safety emergency service is the first transmit power level
  • the transmit power corresponding to the non-public security common service is the second transmit power level
  • the first The transmit power level is higher than the second transmit power level.
  • the non-Public Security Common Service includes a common service of different quality of service levels
  • the second transmit power level includes a plurality of second transmit power sub-levels
  • the second transmit power sub-level corresponding to the common service is The service quality of the general service corresponds.
  • each service can select a certain transmit power value under the limit of the maximum transmit power allowed, and when the quality of service cannot meet the requirement, the transmit power can be increased step by step. or, Directly, the UE starts transmitting signals according to the maximum allowed transmit power value corresponding to its communication service type.
  • the first user equipment determines, according to the communication service mode, a transmit power when the first user equipment sends data to the second user equipment, where the communication service mode includes a normal mode communication, a fallback mode communication, and an interference mode. Communication.
  • FIG. 9 is a schematic flowchart of the second embodiment of the method for controlling the transmission power according to the present invention. The method for determining the communication service mode of the first UE is described. As shown in FIG. 9, the method provided by the embodiment of the present invention includes:
  • Step 901 The first user equipment determines an available channel for sending data to the second user equipment.
  • Step 902 The first user equipment determines whether the available channel is occupied. If not, step 903 is performed, and if yes, step 904 is performed;
  • Step 903 The first user equipment determines that the communication service mode is a normal communication mode.
  • Step 904 The first user equipment determines whether the public security emergency service is running on the occupied channel, and if yes, go to step 905, if no, go to step 906;
  • Step 905 The first user equipment determines that the communication service mode is a fallback mode communication.
  • Step 906 The first user equipment determines that the communication service mode is interference mode communication.
  • the process by which the first user equipment determines the transmit power is as follows:
  • the first user equipment determines, according to the type of communication service, the transmit power when the data is sent to the second user equipment, and sends the data to the second user equipment on the available channel that is not occupied. Data; or
  • the first user equipment determines that the transmit power when the data is sent to the second user equipment is lower than the first user equipment sends the data to the second user equipment when performing the public security emergency service. Transmitting power; or
  • the first user equipment determines, according to the interference condition of the available channel, the transmit power when transmitting data to the second user equipment.
  • the first user equipment when the first user equipment is located in a coverage area of the mobile communication network, the first user equipment sends a power request message to the base station, where the power request message includes the first user equipment acquisition.
  • the channel usage information so that the base station determines the transmit power of the first user equipment according to the channel usage information;
  • the first user equipment determines that the transmit power determined by the first user equipment is different from the transmit power determined by the base station, the first user equipment determines that the transmit power determined by the base station is to the second user. The transmit power when the device sends data.
  • the method further includes:
  • the power control method provided by the embodiment of the present invention can be implemented by the first user equipment provided by the foregoing embodiment, and the implementation principle and the technical effect are similar.
  • FIG. 10 is a schematic flowchart diagram of Embodiment 3 of a method for controlling a transmit power according to the present invention.
  • the execution of the method is any user equipment, and the user equipment can be implemented by any software and/or hardware.
  • the user equipment is referred to as a second user equipment.
  • the transmit power control method provided by this embodiment includes:
  • Step 1001 The second user equipment receives network coverage information of the first user equipment sent by the first user equipment.
  • Step 1002 The second user equipment determines, according to network coverage information of the first user equipment and network coverage information of the second user equipment, when the second user equipment sends data to the first user equipment. power.
  • the power control method provided by the embodiment of the present invention can be implemented by the second user equipment provided by the foregoing embodiment, and the implementation principle and the technical effect are similar.
  • the second user equipment determines, according to the network coverage information of the first user equipment and the network coverage information of the second user equipment, that the second user equipment sends data to the first user equipment.
  • the transmit power at the time including:
  • the mobile network coverage status of the first user equipment and the second user equipment includes any one of the following forms:
  • the first user equipment and the second user equipment are located in a mobile network coverage area; the first user equipment and the second user equipment are not located in a mobile network coverage area; An area, where the second user equipment is not located in a mobile network coverage area;
  • the first user equipment is not located in a mobile network coverage area, and the second user equipment is located in a mobile network coverage area.
  • a specific embodiment is used to determine, according to the network coverage information of the first UE and the network coverage information of the second UE, the second UE, in detail, the transmission power when the second UE sends data to the first UE, including four cases. .
  • the second UE determines that the first UE and the second UE are located in the mobile network coverage area
  • the first user equipment and the second user equipment are first The second user equipment sends the power adjustment information to the first base station, where the power adjustment information is used to instruct the first base station to adjust the transmit power and/or the time-frequency resource of the first user equipment. And the second user equipment receives the power adjustment response information sent by the first base station, and determines the second user according to the power adjustment response information. The transmit power when the device sends data to the first user equipment.
  • the second user equipment determines that the first user equipment and the second user equipment are located in a mobile network coverage area
  • the second user equipment is served by a second base station, where When the user equipment is served by the third base station, the second user equipment sends power adjustment information to the second base station, where the power adjustment information is used to instruct the second base station to adjust the transmit power of the first user equipment.
  • the second user equipment receives the power adjustment response information sent by the second base station, and determines, according to the power adjustment response information, a transmit power when the second user equipment sends data to the first user equipment.
  • the second user equipment determines according to the communication service type or the communication service mode. Transmit power when data is transmitted to the first user equipment.
  • the second user equipment acquires the first The first user equipment is determined according to the transmit power used by the user equipment, and the second user equipment determines the first user equipment according to the transmit power used by the first user equipment and the measured transmit power of the first user equipment obtained by the second user equipment.
  • a path loss when the data is sent to the second user equipment the second user equipment determines a limited transmit power of the second user equipment according to the path loss and the receiving sensitivity of the first user equipment;
  • the second user equipment determines, according to the limited transmit power, a transmit power when the second user equipment sends data to the first user equipment.
  • the second UE determines, according to the limited transmit power, the transmit power when the second UE sends data to the first UE. It includes the following possible implementations:
  • the second user equipment sends the limited transmit power to a second base station, and the second base station serves the second user equipment;
  • the determining, by the second user equipment, the transmit power when the second user equipment sends data to the first user equipment, according to the limited transmit power includes: The user equipment sends the limited transmit power and the time-frequency resource limited by the second user equipment to the second base station, where the second base station serves the second user equipment;
  • the determining, by the second user equipment, the transmit power when the second user equipment sends data to the first user equipment, according to the limited transmit power includes: Determining, by the user equipment, the transmit power that can be used by the current channel according to the current communication service; the second user equipment determining, according to the transmit power that can be used by the current channel and the limited transmit power, that the second user equipment is to the first Transmit power when the user equipment sends data.
  • the method further includes: the second user equipment acquiring, at a transmit power that is available on a channel corresponding to the second base station, the second The transmit power allowed by the user equipment and the limited transmit power, the second base station serving the second user equipment;
  • the second user equipment determines that the first user equipment is located in a mobile network coverage area, and the second user equipment is not located in a mobile network coverage area, the second user equipment is in the first User equipment transmitting power adjustment information or transmitting resource adjustment information;
  • the second user equipment determines, according to the adjusted transmit power or the adjusted transmit resource of the first user equipment, a transmit power when the second user equipment sends data to the first user equipment.
  • the power control method provided by the embodiment of the present invention can be implemented by the second user equipment provided by the foregoing embodiment, and the implementation principle and the technical effect are similar.
  • FIG. 11 is a schematic structural diagram of Embodiment 5 of a first user equipment according to the present invention.
  • the first user equipment in this embodiment may be any user equipment.
  • the user equipment is referred to as a first user equipment.
  • the first user equipment 110 provided by the embodiment of the present invention includes a processor 1101, a transmitter 1102, and a receiver 1103. among them,
  • the processor 1101 is configured to determine a transmit power when the first user equipment sends data to the second user equipment.
  • the transmitter 1102 is configured to send data to the second user equipment by using the transmit power.
  • the first user equipment provided by the embodiment of the present invention is similar to the first user equipment provided in the foregoing embodiment, and details are not described herein again.
  • the processor 1101 is specifically configured to:
  • the communication service type includes a public safety emergency service and a non-public security common service, and the transmit power corresponding to the public safety emergency service is a first transmit power level, and the transmit power corresponding to the non-public security common service is a second Transmit power level, the first transmit power level is high At the second transmit power level.
  • the non-Public Security Common Service includes a common service of different quality of service levels
  • the second transmit power level includes a plurality of second transmit power sub-levels
  • the second transmit power sub-level corresponding to the common service is The service quality of the general service corresponds.
  • the processor 1101 is specifically configured to:
  • the communication service mode includes normal mode communication, fallback mode communication, and interference mode communication.
  • the processor 1101 is further configured to: before determining, according to the communication service mode, the transmit power when the first user equipment sends data to the second user equipment, the first user equipment determines to send data to the second user equipment. Available channel;
  • the first user equipment determines that the communication service mode is the normal communication mode, and if yes, determining whether the operation on the occupied channel is a public safety emergency service, and if so, Determining that the communication service mode is the fallback mode communication, and if not, determining that the communication service mode is the interference mode communication.
  • the processor 1101 is specifically configured to:
  • the transmitter 1102 is configured to: when the first user equipment is located in a coverage area of the mobile communication network, send a power request message to the base station, where the power request message includes the channel acquired by the first user equipment. Using information, so that the base station determines the transmit power of the first user equipment according to the channel usage information;
  • the receiver 1103 is further configured to receive a power response message sent by the base station, where the power is The response message includes a transmit power of the first user equipment;
  • the processor 1101 is further configured to: if the first user equipment determines that the transmit power determined by the first user equipment is different from the transmit power determined by the base station, determine that the transmit power determined by the base station is Transmit power when the second user equipment transmits data.
  • the transmitter 1102 is further configured to: send, to the second user equipment, transmit power used by the first user equipment and/or network coverage information of the first user equipment, to enable the The two user equipment determines the transmit power.
  • the first user equipment provided by the embodiment of the present invention is similar to the first user equipment provided in the foregoing embodiment, and details are not described herein again.
  • FIG. 12 is a schematic structural diagram of Embodiment 3 of a second user equipment according to the present invention.
  • the second user equipment in this embodiment may be any user equipment.
  • the user equipment is referred to as a second user equipment.
  • the second user equipment 120 provided by the embodiment of the present invention includes: a receiver 1201, a processor 1202, and a transmitter 1203. among them,
  • the receiver 1201 is configured to receive network coverage information of the first user equipment sent by the first user equipment.
  • the processor 1202 is configured to determine, according to the network coverage information of the first user equipment and the network coverage information of the second user equipment, a transmit power when the second user equipment sends data to the first user equipment.
  • the second user equipment provided by the embodiment of the present invention is similar to the second user equipment provided in the foregoing embodiment, and details are not described herein again.
  • the processor 1202 is specifically configured to:
  • the mobile network coverage status of the first user equipment and the second user equipment includes any one of the following forms:
  • the first user equipment and the second user equipment are located in a mobile network coverage area; the first user equipment and the second user equipment are not located in a mobile network coverage area; Area, the second user equipment is not located Mobile network coverage area;
  • the first user equipment is not located in a mobile network coverage area, and the second user equipment is located in a mobile network coverage area.
  • the processor 1202 is specifically configured to:
  • the second user equipment determines that the first user equipment and the second user equipment are located in a mobile network coverage area, where the first user equipment and the second user equipment are served by the first base station, The second user equipment transmits the power adjustment information to the first base station, where the power adjustment information is used to instruct the first base station to adjust the transmit power and/or the time-frequency resource of the first user equipment, and the second user The transmit power and/or time-frequency resources of the device;
  • the second user equipment receives the power adjustment response information sent by the first base station, and determines, according to the power adjustment response information, the transmit power when the second user equipment sends data to the first user equipment.
  • the processor 1202 is specifically configured to:
  • the second user equipment determines that the first user equipment and the second user equipment are located in a mobile network coverage area, the second user equipment is served by a second base station, and the first user equipment is served by a third base station.
  • the second user equipment sends power adjustment information to the second base station, where the power adjustment information is used to instruct the second base station to adjust transmit power and/or time-frequency resources of the first user equipment, and Instructing the second base station to communicate with the third base station, so that the third base station adjusts transmit power and/or time-frequency resources of the first user equipment;
  • the second user equipment receives the power adjustment response information sent by the second base station, and determines, according to the power adjustment response information, the transmit power when the second user equipment sends data to the first user equipment.
  • the processor 1202 is specifically configured to:
  • the second user equipment determines that the first user equipment and the second user equipment are not located in the mobile network coverage area
  • the second user equipment determines to the first according to the communication service type or the communication service mode. Transmit power when the user equipment sends data.
  • the receiver 1201 is further configured to acquire the The transmit power used by the first user equipment
  • the processor 1202 is specifically configured to: according to the transmit power and location used by the first user equipment Determining, by the second user equipment, the measured transmit power of the first user equipment, and determining a path loss when the first user equipment sends data to the second user equipment;
  • the transmitter 1203 is further configured to:
  • the receiver 1201 is further configured to: receive, by the second base station, a transmit power when the second user equipment sends data to the first user equipment.
  • the transmitter 1203 is further configured to: send the limited transmit power and the second user equipment limited time-frequency resource to the second base station, where the second base station serves the second user
  • the receiver 1201 is further configured to: receive, by the second base station, a transmit power when the second user equipment sends data to the first user equipment, and configure, by the second base station, the second user equipment Time-frequency resources.
  • the processor 1202 is specifically configured to: determine, according to the current communication service, a transmit power that can be used by the current channel;
  • the processor 1202 is further configured to:
  • Determining, by the second user equipment, the second user equipment according to the transmit power that can be used on the channel corresponding to the second base station communication, the transmit power allowed by the second user equipment, and the limited transmit power The transmit power of the second base station when transmitting data.
  • the transmitter 1203 is further configured to: Transmitting power adjustment information or transmitting resource adjustment information by the first user equipment;
  • the processor 1202 is specifically configured to: determine, according to the adjusted transmit power or the adjusted transmit resource of the first user equipment, a transmit power when the second user equipment sends data to the first user equipment.
  • the second user equipment provided by the embodiment of the present invention is similar to the second user equipment provided in the foregoing embodiment, and details are not described herein again.
  • the disclosed apparatus, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit or module is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection between the various components shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the program when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un dispositif de contrôle d'une puissance de transmission. Le procédé comprend les étapes suivantes : un premier dispositif d'utilisateur détermine une puissance de transmission au moment où le premier dispositif d'utilisateur envoie des données à un second dispositif d'utilisateur ; et le premier dispositif d'utilisateur utilise la puissance de transmission pour envoyer des données au second dispositif d'utilisateur. Grâce à l'invention, la puissance de transmission du premier dispositif d'utilisateur est contrôlée dans un mode de communication D2D (dispositif à dispositif).
PCT/CN2014/072928 2014-03-05 2014-03-05 Procédé et dispositif de contrôle de puissance de transmission Ceased WO2015131357A1 (fr)

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PCT/CN2014/072928 WO2015131357A1 (fr) 2014-03-05 2014-03-05 Procédé et dispositif de contrôle de puissance de transmission

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WO2022000359A1 (fr) * 2020-07-01 2022-01-06 Qualcomm Incorporated Commande de puissance basée sur la réciprocité pour une interférence de liaison croisée

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CN109856984B (zh) * 2019-03-04 2022-07-15 深圳供电局有限公司 用电管理方法、装置、计算机设备和存储介质
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CN110267236B (zh) * 2019-06-24 2023-02-28 奇点新源国际技术开发(北京)有限公司 一种基于物联网的无线网络功率控制方法及系统

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