Method, apparatus, and system for communication information transmission

Abstract

A method, apparatus, and system for communication information transmission are provided in the embodiments of the present invention. The method comprises: communication information is transmitted to a base station (BS); when the communication information fails to be transmitted to the BS, a first backoff upper limit is obtained according to the number of times the transmission has failed; a backoff upper limit is determined according to the first backoff upper limit, and a backoff time of retransmitting the communication information is selected according to the backoff upper limit. In the embodiments of the present invention, terminal can obtain the proper backoff upper limit according to the number of times it has failed to transmit the communication information, thereby reducing the latency of its uplink data transmission.

What is claimed is: 
     
         1 . A method for communication information transmission, characterized in comprising:
 transmitting communication information to a base station;   obtaining a first backoff upper limit, when the communication information fails to be transmitted to the base station, according to the number of times the transmission has failed; and   determining a backoff upper limit according to the first backoff upper limit, and selecting a backoff time for retransmitting the communication information according to the backoff upper limit;   wherein a numerical value of the first backoff upper limit decreases with an increase in the number of times the transmission has failed.   
     
     
         2 . The method for communication information transmission according to  claim 1 , characterized in that the step of determining a backoff upper limit according to the first backoff upper limit comprises:
 receiving a second backoff upper limit transmitted from the base station when the communication information fails to be transmitted to the base station; and   taking a minimum value from the first backoff upper limit and the second backoff upper limit as the backoff upper limit.   
     
     
         3 . The method for communication information transmission according to  claim 1 , characterized in that the communication information comprises a random access signal, scheduling request resource signaling or service data. 
     
     
         4 . The method for communication information transmission according to  claim 1 , characterized in that, when the numerical value of the first backoff upper limit decreases with an increase in the number of times the transmission has failed, the step of obtaining a first backoff upper limit according to the number of times the transmission has failed comprises:
 obtaining a first time already taken to transmit the communication information and a delay requirement corresponding to transmission of the communication information; and   obtaining the first backoff upper limit according to the first time and the delay requirement.   
     
     
         5 . The method for communication information transmission according to  claim 4 , characterized in that the first backoff upper limit is equal to a difference between the delay requirement and the first time. 
     
     
         6 . The method for communication information transmission according to  claim 1 , characterized in further comprising obtaining a backoff lower limit for transmitting the communication information; wherein
 the step of selecting a backoff time for retransmitting the communication information according to the backoff upper limit comprises:   selecting the backoff time for retransmitting the communication information according to the backoff upper limit and the backoff lower limit.   
     
     
         7 . The method for communication information transmission according to  claim 6 , characterized in that the step of obtaining a backoff lower limit for transmitting the communication information comprises:
 receiving the backoff lower limit transmitted from the base station; or   obtaining the backoff lower limit according to an instruction of an application layer; or   obtaining the backoff lower limit according to the backoff upper limit and a backoff time window transmitted from the base station.   
     
     
         8 . The method for communication information transmission according to  claim 1 , characterized in further comprising, prior to the step of transmitting communication information to a base station:
 receiving one or more competed resources transmitted from the base station for transmitting the communication information; and   selecting at least one competed resource from the one or more competed resources to transmit the communication information.   
     
     
         9 . The method for communication information transmission according to  claim 8 , characterized in that the step of receiving one or more competed resources transmitted from the base station for transmitting the communication information comprises:
 receiving one or more competed resources transmitted from the base station for transmitting the communication information according to resource identities allocated by the base station to terminals, wherein each terminal is allocated by the base station with at least one resource identity, and each resource identity corresponds to at least one competed resource.   
     
     
         10 . The method for communication information transmission according to  claim 8 , characterized in that the step of selecting at least one competed resource from the one or more competed resources to transmit the communication information comprises:
 randomly selecting at least one competed resource from the one or more competed resources to transmit the communication information; or   acquiring a modulus of the number of the one or more competed resources with respect to a numerical value of identity information of a current terminal to obtain a first remainder, and selecting a competed resource that corresponds to the first remainder to transmit the communication information.   
     
     
         11 . An apparatus for communication information transmission, characterized in comprising:
 a transmitting module, configured to transmit communication information to a base station;   an upper limit obtaining module, configured to obtain a first backoff upper limit, when the transmitting module fails to transmit the communication information to the base station, according to the number of times the transmission has failed; and   a first selecting module, configured to determine a backoff upper limit according to the first backoff upper limit obtained by the upper limit obtaining module, and selecting a backoff time for retransmitting the communication information according to the backoff upper limit;   wherein a numerical value of the first backoff upper limit decreases with an increase in the number of times the transmission has failed.   
     
     
         12 . The apparatus for communication information transmission according to  claim 11 , characterized in that the first selecting module comprises:
 an upper limit receiving unit, configured to receive a second backoff upper limit transmitted from the base station when the communication information fails to be transmitted to the base station; and   a first selecting unit, configured to take a minimum value from the first backoff upper limit and the second backoff upper limit as the backoff upper limit, and selecting the backoff time for retransmitting the communication information according to the backoff upper limit.   
     
     
         13 . The apparatus for communication information transmission according to  claim 11 , characterized in further comprising a lower limit obtaining module, configured to obtain a backoff lower limit for transmitting the communication information; wherein
 the first selecting module is specifically configured to determine the backoff upper limit according to the first backoff upper limit obtained by the upper limit obtaining module, and selecting the backoff time for retransmitting the communication information according to the backoff upper limit and the backoff lower limit obtained by the lower limit obtaining module.   
     
     
         14 . The apparatus for communication information transmission according to  claim 13 , characterized in that the lower limit obtaining module comprises:
 a lower limit receiving unit, configured to receive the backoff lower limit transmitted from the base station;   a first lower limit obtaining unit, configured to obtain the backoff lower limit according to an instruction of an application layer; or   a second lower limit obtaining unit, configured to obtain the backoff lower limit according to the backoff upper limit and a backoff time window transmitted from the base station.   
     
     
         15 . The apparatus for communication information transmission according to  claim 11 , characterized in further comprising:
 a resource receiving module, configured to receive one or more competed resources transmitted from the base station for transmitting the communication information before the transmitting module transmits the communication information to the base station; and   a resource selecting module, configured to select one competed resource from the one or more competed resources to transmit the communication information; wherein   the transmitting module is specifically configured to use the competed resource selected by the resource selecting module to transmit the communication resources.   
     
     
         16 . The apparatus for communication information transmission according to  claim 15 , characterized in that the resource receiving module is specifically configured to receive, before the transmitting module transmits the communication information to the base station, one or more competed resources transmitted from the base station for transmitting the communication information according to resource identities allocated by the base station to terminals, wherein each terminal is allocated by the base station with at least one resource identity, and each resource identity corresponds to at least one competed resource.