Resource allocation method and device in OFDM (orthogonal frequency division multiplexing) system
A resource allocation and orthogonal frequency division technology, applied in the field of communication, can solve problems such as low spectrum utilization efficiency
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Embodiment 1
[0022] figure 1 It is a flowchart of a resource allocation method in an OFDM system according to a method embodiment of the present invention. Such as figure 1 As shown, this embodiment includes:
[0023] Step S102, in the set of RB frequency bands of resource blocks with optional system bandwidth, allocate the RB frequency band that satisfies the largest SINR value of the frequency domain signal-to-interference-plus-noise ratio as the RB resource allocation frequency band of the UE to be scheduled.
[0024] A specific flow for implementing the above method is given below, but the present invention is not limited to using this method for resource allocation. Allocating the RB frequency band that satisfies the maximum SINR value in the frequency domain as the RB resource allocation of the UE to be scheduled may specifically include: specifying the reference RB position in the set of RB frequency bands with optional system bandwidth; the reference RB position slides according ...
Embodiment 2
[0027] figure 2 It is a flowchart of a method for allocating resources in an OFDM system according to Embodiment 2 of the method of the present invention. Such as figure 2 As shown, this embodiment includes:
[0028] Step S202, determining the retransmission UE in the cell and the number of RBs and frequency bands occupied by the retransmission UE;
[0029] Step S204, referring to the number of RBs and the frequency band of the retransmitting UE, determine the number of RBs and the frequency band available to the newly transmitting UE for this transmission;
[0030] Step S206, perform priority processing on all newly transmitted UEs in the cell, and obtain the priority queue of the UE in the cell. The priority processing methods include PF algorithm, MAXC / I algorithm, RR algorithm, etc. For the method used for priority calculation, here no limit;
[0031] Step S208: Allocate the number of RBs to all scheduled UEs. There are many ways to allocate the number of RBs to UEs,...
Embodiment 3
[0043] Under ICIC conditions, High Interference Indication (HII for short) information needs to be considered. The HII information is a strong interference indication, indicating that the serving cell will schedule UEs on the edge of the cell on the indicated Physical Resource Block (PRB) (that is, it is easy to generate strong interference on these PRBs), and the cell that receives the HII avoids Cell edge UEs are scheduled on these PRBs. The HII information includes information of each PRB on the entire system bandwidth, preferably, the HII information includes PRB0 to PRB109. Among them, "1" indicates a strong interference sensitive indication, that is, this PRB is occupied by a cell edge UE, and is likely to cause strong interference to adjacent cells; The cell generates strong interference.
[0044] Under ICIC conditions, the HII processing module outputs the high interference indication (HII new ) and the sum of high interference indications from neighboring cells W...
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