64results about How to "Control transmit power" patented technology

The invention provides a downstream HS-SCCH power control method and a device for carrying out the same. In the state of CELL_FACH, the method controls the emission power of the an HS-SCCH by using signal-to-noise Ec / Io information of a downstream CPICH which is reported by a UE through an RACH, thereby realizing the power control of the downstream HS-SCCH under the condition of enhanced CELL_FACH, and ensuring that the UE in enhanced CELL_FACH condition can correctly receive BCCH and CCCH information.

The invention discloses a cognitive ratio power control method. The method improves a revenue function on the basis of a non-cooperative game power control algorithm proposed by D.Goodman, and provides a new power control algorithm based on non-cooperative game; and simultaneously, for improving the searching precision of the power control algorithm, the invention further provides an improved shuffled frog leaping algorithm. The cognitive radio power control method of the invention has higher calculation accuracy, implements effective control on transmitting power of users, and can improve system performance obviously.

The invention discloses a method for improving the performance of cell edge users by using a multi-objective genetic algorithm, and relates to the field of communication. The method for improving the performance of the cell edge users by using the multi-objective genetic algorithm can reduce the number of edge users to the greatest extent and greatly improve the service quality and the satisfaction degree of the users. The method comprises the following steps: enabling a base station to judge whether a user is a cell edge user or not according to measurement reports of the user; enabling the base station to determine the geographical positions of the edge users in coverage; enabling the base station to determine the base station which is in the vicinity of a cell edge user set according to the geographical positions of the edge users and the geographical position of the base station; enabling the base station to exchange information with the neighboring base station through X2; and enabling the base station to generate a coverage adjusting strategy through the multi-objective genetic algorithm according to the obtained information, and adjusting the activation and the closing of an RRU (radio remote unit), the transmission power and the declination angle and the azimuth angle of an antenna to change the coverage, thereby ensuring that users in the inter-cell overlapping region are as few as possible.

The invention discloses a power control method of user facility, which comprises the following steps: recoverying and carrying out ascending DPCCH (private physics control channel) launching; checking descending control channel of base station; adjusting the ascending DPCCH sending power according to the result of descending control channel. The invention can control UE sending power when the DPCCH recovers, which improves the system capacitance.

The invention discloses a method and a system for controlling power of a common channel. The method comprises the following steps that: if user equipment determines that the quality of a current wireless coverage cannot meet a requirement, a communication request signal is transmitted to system equipment; and an access entity of the system equipment controls the transmitting power of the common channel according to the received communication request signal. By adopting the technical scheme, the transmitting power of the common channel can be reasonably controlled according to the actual need of the user equipment; the energy consumption of the whole wireless communication network is reduced, and the radio frequency pollution and the radio frequency interference of the whole network coverage area are reduced; and the interference between the access entities can be reduced and the system gain is obtained.

The present invention is applicable to the communication field, and provides an uplink channel power control method and device, comprising: comparing a preamble transmission parameter with at least one preset parameter threshold to obtain a comparison result, and determining a channel priority according to the comparison result; When multiple uplink channels need to be transmitted at the same time, the transmit power of the multiple uplink channels is controlled according to the channel priority; the multiple uplink channels include the PRACH. The present invention adopts a non-fixed strategy for the ranking of PRACH in the channel priority, by comparing the transmission parameter of the preamble with the preset parameter threshold, or according to the signaling of the receiving base station to determine the ranking of the PRACH in the channel priority, thereby Power control is performed on uplink channel transmission, which avoids the situation that the UE transmit power exceeds its maximum transmit power or reaches the interference level, and can prevent power limitation and interference limitation.

The embodiment of the invention discloses a pre-coding method, which comprises the steps: performing pre-coding preorder processing on a signal to be transmitted, wherein the power of the signal to be transmitted is increased by the preorder processing; selecting a power limitation algorithm according to a selection rule; performing power limitation operation on the signal subjected to preorder processing according to the selected power limitation algorithm; and generating a pre-coded signal according to the signal after the power limitation operation. The embodiment of the invention also discloses a transmitter, a receiver and a pre-coding system. By using the pre-coding method, the transmitter, the receiver and the pre-coding system, the adverse effect of the power limitation operation on the signal transmission can be reduced as much as possible while the transmitting power is limited by using the power limitation operation.

Interference that occurs during wireless communication may be managed through the use of fractional reuse and other techniques. In some aspects fractional reuse may relate to HARQ interlaces, portions of a timeslot, frequency spectrum, and spreading codes. Interference may be managed through the use of a transmit power profile and / or an attenuation profile. Interference also may be managed through the use of power management-related techniques.

A sum of transmission powers for all channels for transmissions from a base station to mobile stations is controlled to constant. Specifically, the transmission power for a high speed and high capacity shared channel is controlled such that a sum of transmission powers for individual channels for individual mobile stations, and the shared channel is always constant. With this constitution, an interference wave power from neighboring cells becomes constant, an average data transfer rate of the shared channel becomes constant, a prediction precision for a wait time for sending / receiving data increases, a lower limit for an actual data transfer rate becomes high, and the number of users in a service quality assurance type service increases. Additionally, when the number of individual channels in use is low, the transmission power for shared channel can increase, and the transmission rate increases and the time decreases when a best effort type service is provided.

Interference that occurs during wireless communication may be managed through the use of fractional reuse and other techniques. In some aspects fractional reuse may relate to HARQ interlaces, portions of a timeslot, frequency spectrum, and spreading codes. Interference may be managed through the use of a transmit power profile and / or an attenuation profile. Interference also may be managed through the use of power management-related techniques.

The invention relates to a novel mobile phone burglar alarm system. The novel mobile phone burglar alarm system comprises a hardware module and a software module. The hardware module is a set of wireless communication equipment and comprises a near monitor and a plurality of short-range transponders. The monitor is composed of a power supply, a host, a link management unit, a host interface unit, a link control unit, a wireless unit and an alarm unit. Each transponder is composed of a power supply, a host, a link management unit, a host interface unit, a link control unit and a wireless unit. The novel mobile phone burglar alarm system is characterized in that the effective signal transmission distance of the wireless units can be adjusted, and an undetachable small power supply needs to be additionally arranged inside a mobile phone. The novel mobile phone burglar alarm system can solve the technical problem that with a traditional mobile phone burglary prevention scheme, real-time and on-site burglary prevention can not be achieved.

The invention discloses a method for improving the performance of cell edge users by using a multi-objective genetic algorithm, and relates to the field of communication. The method for improving the performance of the cell edge users by using the multi-objective genetic algorithm can reduce the number of edge users to the greatest extent and greatly improve the service quality and the satisfaction degree of the users. The method comprises the following steps: enabling a base station to judge whether a user is a cell edge user or not according to measurement reports of the user; enabling the base station to determine the geographical positions of the edge users in coverage; enabling the base station to determine the base station which is in the vicinity of a cell edge user set according to the geographical positions of the edge users and the geographical position of the base station; enabling the base station to exchange information with the neighboring base station through X2; and enabling the base station to generate a coverage adjusting strategy through the multi-objective genetic algorithm according to the obtained information, and adjusting the activation and the closing of an RRU (radio remote unit), the transmission power and the declination angle and the azimuth angle of an antenna to change the coverage, thereby ensuring that users in the inter-cell overlapping region are as few as possible.

The invention discloses a data transfer and control method in mobile communication, which builds an operation route in advance; the invention comprises the following steps: a network control device decides time reference information for a wireless transfer channel, and then the operation data from network side and the decided time reference information are transmitted to a base station through a share channel; the base station transmits the operation data from the network control device to user device through the wireless transfer channel included in the pre-set operation route according to the received time reference information. The invention also discloses a data transfer and control system in mobile communication. The invention provides the interior maintained time reference information of each wireless transfer channel to the base station; and then the base station transmits the operation data to the user device respectively through each wireless transfer channel according to thetime reference information of each wireless transfer channel; in this way, the invention can guarantee the time requirement for the wireless transfer channel in the process of data transfer.

The invention discloses a multi-AP cooperation power control method and system of an electric power emergency communication system, relates to the field of wireless communication, solves the problems of low data transmission capability and small signal coverage range of the electric power emergency communication system, and improves the data transmission capability of the electric power emergency communication system by increasing user types in a wireless access process and adjusting part of protocol frame structures. According to the method, the related field is used for indicating the newly added user type, a spectrum resource allocation method and an AP center power control method are designed in combination with the AP cooperation technology and the soft frequency reuse technology, and compared with the prior art, the data transmission capacity is effectively improved, and the signal coverage range is enlarged under the condition that the station bearing capacity is similar.