Apparatus and method for spectrum management, apparatus and method for base station side and user equipment side

Abstract

A first spectrum management apparatus that includes circuitry that acquires spectrum utilization information, determines a probability of getting spectrum resources, determines, based on the probability, adjusted spectrum sensing parameters to be used by the first wireless communication system, the adjusted spectrum sensing parameters including an energy detection threshold for spectrum sensing, transmits, to the first wireless communication system, an instruction to change original spectrum sensing parameters of the first wireless communication system to the adjusted spectrum sensing parameters, receives, from a second spectrum management apparatus that manages a second wireless communication system, spectrum sensing parameters changing feedback indicating that the second wireless communication system has been influenced by the first wireless communication system using the adjusted spectrum sensing parameters, and transmits, to the first wireless communication system, another instruction to change the adjusted spectrum sensing parameters back to the original spectrum sensing parameters.

1 . An electronic device, comprising:
 circuitry configured to:
 acquire spectrum utilization information on a predetermined bandwidth from a user equipment (UE); 
 determine, according to the spectrum utilization information, probability information indicating a probability of getting spectrum resources on the predetermined bandwidth; and 
 adjust, based on the probability information, spectrum sensing parameters on the predetermined bandwidth for the UE, wherein 
   the spectrum sensing parameters comprise an energy detection threshold for spectrum sensing, and   the spectrum utilization information indicates adjacent channel interference.   
     
     
         2 . The electronic device according to  claim 1 , wherein the circuitry is further configured to configure the UE to measure the spectrum utilization information. 
     
     
         3 . The electronic device according to  claim 1 , wherein the circuitry is further configured to acquire the spectrum utilization information by measuring received signal power on preconfigured Orthogonal Frequency Division Multiplexing (OFDM) symbols. 
     
     
         4 . The electronic device according to  claim 1 , wherein the circuitry is configured to acquire the spectrum utilization information from the UE in a predetermined region. 
     
     
         5 . The electronic device according to  claim 4 , wherein the spectrum utilization information comprises at least one of: information of actual activation status of each cell in the predetermined region after spectrum sensing, throughput in the predetermined region, and a signal to noise ratio in the predetermined region. 
     
     
         6 . The electronic device according to  claim 1 , wherein the spectrum sensing parameters further comprise at least one of: time duration for spectrum sensing, the number of nodes involved in sensing, and a judgment criterion of spectrum sensing in a case of distributed spectrum sensing. 
     
     
         7 . The electronic device according to  claim 4 , wherein
 the circuitry is further configured to:
 acquire information indicating an identifier of each cell in the predetermined region; and 
 determine, based on the information indicating the identifier of each cell, whether a cell in an active state and a cell failing to be activated are systems of a same type, and 
   the adjusting is performed in a case of determining that the cell in the active state and the cell failing to be activated are the systems of the same type.   
     
     
         8 . The electronic device according to  claim 4 , wherein the circuitry is further configured to adjust, in a case that the probability deviates from an expected value, the spectrum sensing parameters in the predetermined region. 
     
     
         9 . The electronic device according to  claim 8 , wherein the circuitry is further configured to perform the adjusting based on a preset system model. 
     
     
         10 . The electronic device according to  claim 9 , wherein the preset system model comprises at least one of: a channel model, a service model, a model of probability for spectrum activation of the UE in the predetermined region, and a geographical location model. 
     
     
         11 . The electronic device according to  claim 8 , wherein different expected values of probability are set for wireless communication systems with different priority levels of utilizing a spectrum. 
     
     
         12 . The electronic device according to  claim 8 , wherein the circuitry is further configured to:
 in a case of the probability being higher than the expected value, decrease the energy detection threshold.   
     
     
         13 . The electronic device according to  claim 8 , wherein the circuitry is further configured to:
 in a case of the probability being lower than the expected value, increase the energy detection threshold.   
     
     
         14 . The electronic device according to  claim 1 , wherein
 the predetermined bandwidth is an unlicensed frequency band, and   the circuitry is further configured to acquire the spectrum utilization information via wireless communication in a licensed frequency band.   
     
     
         15 . The electronic device according to  claim 1 , wherein the circuitry is further configured to transmit, to the UE, an instruction to change original spectrum sensing parameters of the UE to the adjusted spectrum sensing parameters. 
     
     
         16 . The electronic device according to  claim 1 , wherein the circuitry is further configured to receive, from a spectrum management apparatus that manages a wireless communication system, spectrum sensing parameters changing feedback indicating that the wireless communication system has been influenced by the UE using the adjusted spectrum sensing parameters. 
     
     
         17 . The electronic device according to  claim 16 , wherein the circuitry is further configured to, in response to receiving the spectrum sensing parameters changing feedback, transmit, to the UE, an instruction to change the adjusted spectrum sensing parameters back to an original spectrum sensing parameters of the UE. 
     
     
         18 . A spectrum management method, comprising:
 acquiring spectrum utilization information on a predetermined bandwidth from a user equipment (UE);   determining, using circuitry, according to the spectrum utilization information, probability information indicating a probability of getting spectrum resources on the predetermined bandwidth; and   adjusting, using the circuitry, based on the probability information, spectrum sensing parameters on the predetermined bandwidth for the UE, wherein   the spectrum sensing parameters comprise an energy detection threshold for spectrum sensing, and   the spectrum utilization information indicates adjacent channel interference.