Method and system for coordinated scheduling based on cell priority

1. A method for coordinated scheduling based on cell priority, which is applied to a system using coordinated multiple point transmission (CoMP) technology, comprising:

performing priority sequencing on each coordinated cell according to historical and/or current information of each coordinated cell; and

successively finishing scheduling of each coordinated cell in an order according to priority from high to low;

wherein,

the historical information comprises one or any combination of following information: service volume, business intensity and type of served service of the present coordinated cell;

the current information comprises one or any combination of following information: number of the user to be scheduled, current channel status information and data type of the user in the present coordinated cell;

wherein,

when the method is applied in a centralized coordinated network,

the step of successively finishing scheduling of each coordinated cell in an order according to priority from high to low comprises taking any coordinated cell or one coordinated cell confirmed according to service volume or business status in each coordinated cell in the network as a central control cell, which finishes the scheduling of each coordinated cell, and sends the scheduling result to each coordinated cell respectively;

when the method is applied in a distributed coordinated network,

the method further comprises each coordinated cell sending the historical and current information of the present cell to all other coordinated cells, and meanwhile, each coordinated cell also receiving the historical and current information of the cell sent by other coordinated cells;

the step of performing priority sequencing on each coordinated cell according to historical and/or current information of each coordinated cell comprises each coordinated cell performing the priority sequencing according to the historical and/or relevant information of all coordinated cells;

the step of successively finishing scheduling of each coordinated cell in an order according to priority from high to low comprises: a high priority coordinated cell, after finishing the scheduling, notifying all low priority coordinated cells of the scheduling result; and the low priority cell receiving the scheduling result sent by the high priority cell.

2. The method according to claim 1 , wherein,

the step of successively finishing scheduling of each coordinated cell in an order according to priority from high to low comprises: after finishing scheduling of a high priority coordinated cell, performing scheduling on a low priority coordinated cell according to a scheduling result of the high priority coordinated cell;

the scheduling result comprises: scheduling user information, and weight information of the scheduling user.

3. The method according to claim 2 , wherein,

the step of successively finishing scheduling of each coordinated cell in an order according to priority from high to low further comprises: when scheduling one coordinated cell, according to channel feedback information of each user to be scheduled and finished data throughput of each user to be scheduled in that coordinated cell, preferentially selecting a user to be scheduled whose finished data throughput is little and current channel quality is high to perform the scheduling.

4. The method according to claim 2 , wherein,

the step of performing scheduling on a low priority coordinated cell according to a scheduling result of the high priority coordinated cell comprises:

when scheduling the coordinated cell, if interference of a user to be scheduled to a user for which scheduling is already finished is beyond a preset interference strength threshold value, then giving up scheduling the user.

5. The method according to claim 1 , wherein,

when scheduling the coordinated cell, if the coordinated cell supports a multi-user multiple input multiple output (MU-MIMO) multiple antenna mode, and channel condition allows, a plurality of users to be scheduled in the coordinated cell are scheduled; if the coordinated cell supports a single-user multiple input multiple output (SU-MIMO) mode, and under the case that the channel condition allows, a plurality of flows are used for the users to be scheduled which are scheduled by the coordinated cell.

6. The method according to claim 1 , further comprising:

performing the priority sequencing to each coordinated cell again at each coordinated moment or according to a preset cycle.