Base station, small cell, and method for scheduling communications link resource

Abstract

A base station, a small cell, and a method for scheduling a communications link resources are provided. A first small cell reports load information and channel state information of a channel between the first small cell and a neighboring second small cell to a base station. The first small cell receives link pre-scheduling signaling from the base station. The link pre-scheduling signaling includes wireless resource occupation information that indicates an occupancy of a wireless resource of the first small cell by a backhaul link. The first small cell allocates a first wireless resource in available wireless resources to the backhaul link according to the channel state information and the wireless resource occupation information, and allocates a second wireless resource in the remaining available wireless resources to an access link used for data transmission between the first small cell and a user equipment device.

What is claimed is: 
     
         1 . An access node serving as a small cell, wherein the access node comprises:
 a transmitter, configured to cooperate with a processor to report load information and channel state information of a channel between the small cell and a neighboring small cell to a base station, wherein both a coverage range of the small cell and a coverage range of the neighboring small cell are within a coverage range of the base station;   a receiver, configured to cooperate with the processor to receive link scheduling signaling sent by the base station according to the load information and the channel state information, wherein the link scheduling signaling comprises wireless resource scheduling information, and the wireless resource scheduling information is used to allocate, to the small cell, a first wireless resource required by a wireless backhaul link of the small cell; and   the processor, configured to allocate a second wireless resource on the wireless backhaul link except the first wireless resource to an access link, wherein the access link is used for data transmission between the small cell and user equipment.   
     
     
         2 . The small cell according to  claim 1 , wherein:
 the processor is further configured to determine, according to the load information, whether resource reallocation needs to be performed for the wireless backhaul link; wherein   the transmitter is further configured to: after the processor determines that the resource reallocation needs to be performed for the wireless backhaul link, cooperate with the processor to send information for requesting backhaul link resource reallocation to the base station; and   the receiver is further configured to cooperate with the processor to receive feedback instruction information sent by the base station according to the information for requesting the backhaul link resource reallocation, wherein the feedback instruction information instructs the small cell to report the load information and the channel state information to the base station.   
     
     
         3 . A base station comprising:
 a receiver, configured to cooperate with a processor to receive load information and channel state information that are reported by a small cell; and   a transmitter, configured to cooperate with the processor to send link scheduling signaling to the small cell on a millimetric wave band according to the load information and the channel state information, wherein the link scheduling signaling comprises wireless resource scheduling information, the wireless resource scheduling information indicates a first wireless resource required by the small cell for accessing a wireless backhaul link, and a coverage range of the small cell is within a coverage range of the base station.   
     
     
         4 . The base station according to  claim 3 , wherein the base station further comprises the processor;
 the receiver is further configured to cooperate with the processor to receive information for requesting backhaul link resource reallocation that is sent by the small cell;   the processor is configured to determine, according to load-related information of the wireless backhaul link of the small cell, whether wireless resource reallocation needs to be performed for the wireless backhaul link of the small cell; and   the transmitter is further configured to: when the processor determines that the wireless resource reallocation needs to be performed for the wireless backhaul link of the small cell, cooperate with the processor to send feedback instruction information to a small cell related to the wireless resource reallocation, wherein the feedback instruction information instructs the small cell related to the wireless resource reallocation to report the load information and the channel state information to the base station.   
     
     
         5 . A method for scheduling a communications link resource, the method comprising:
 reporting, by an access node serving as a small cell, load information and channel state information of a channel between the small cell and a neighboring small cell to a base station, wherein both a coverage range of the small cell and a coverage range of the neighboring small cell are within a coverage range of the base station;   receiving, by the small cell, link scheduling signaling sent by the base station according to the load information and the channel state information, wherein the link scheduling signaling comprises wireless resource scheduling information, and the wireless resource scheduling information is used to allocate, to the small cell, a first wireless resource required by a wireless backhaul link of the small cell; and   allocating a second wireless resource in available wireless resources except the first wireless resource to an access link, wherein the access link is used for data transmission between the small cell and user equipment.   
     
     
         6 . The method according to  claim 5 , wherein before reporting the load information and the channel state information, the method further comprises:
 determining, by the access node, a demand for backhaul link resource reallocation according to the load information;   sending information for requesting the backhaul link resource reallocation to the base station; and   receiving feedback instruction information sent by the base station according to the information for requesting the backhaul link resource reallocation, wherein the feedback instruction information instructs the small cell to report the load information and the channel state information to the base station.   
     
     
         7 . A method for scheduling a communications link resource, the method comprising:
 receiving, by a base station, load information and channel state information that are reported by a small cell; and   sending link scheduling signaling to the small cell on a millimetric wave band according to the load information and the channel state information, wherein the link scheduling signaling comprises wireless resource scheduling information, the wireless resource scheduling information indicates a first wireless resource required by the small cell for accessing a wireless backhaul link, and a coverage range of the small cell is within a coverage range of the base station.   
     
     
         8 . The method according to  claim 7 , wherein before receiving the load information and the channel state information, the method further comprises:
 receiving, by the base station, information for requesting backhaul link resource reallocation that is sent by the small cell;   determining, according to load-related information of the wireless backhaul link of the small cell, whether to perform wireless resource reallocation for the wireless backhaul link of the small cell; and   when it is determined to perform the wireless resource reallocation, sending feedback instruction information to a small cell related to the wireless resource reallocation, wherein the feedback instruction information instructs the small cell related to the wireless resource reallocation to report load information and channel state information to the base station.