A d2d communication resource scheduling method and device
A communication resource and scheduling method technology, applied in the field of D2D communication resource scheduling, can solve the problems of insufficient RB number, poor channel gain, and inability to guarantee the real-time performance of the resource scheduling and allocation process, achieve a good balance of index performance, reduce signaling overhead, Effectiveness of resolving inequities and resource conflicts
Active Publication Date: 2021-05-11
中国移动通信集团陕西有限公司 +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] However, in practical applications, in scenarios where there are more D2D users than cellular users, such as shopping malls and stadiums, under the existing resource allocation model, the number of RBs that can be reused by D2D users is insufficient, which will cause The problem of resource scarcity makes some D2D users unable to obtain resources; and the allocation method of maximizing system throughput makes D2D users with better channel gain have higher scheduling priority, while users located in weak coverage areas at the edge are due to channel gain Poor, the probability of obtaining resources is small, resulting in the problem of unfair resource scheduling; moreover, the existing resource model summarizes the resource scheduling problem as a combinatorial optimization problem, and the centralized solution by the base station has high complexity. When the user When the number grows exponentially, the real-time performance of the resource scheduling and allocation process cannot be guaranteed
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0109] The present invention provides a D2D communication resource scheduling method and device, which has better balance index performance, solves the problem of unfair resource scheduling and resource conflict, reduces signaling overhead, and greatly reduces the computational complexity of resource allocation models , which ensures the real-time performance of the resource scheduling and allocation process.
[0110] In a common cellular network under the LTE system, a cell is equipped with a base station, and the network uses OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) technology to divide spectrum resources into a series of orthogonal subcarrier allocations to different cellular users. Such as figure 1As shown, it is a schematic diagram of the cellular communication and D2D communication link model. The cellular user 11 and the cellular user 12 communicate through the base station 10. The cellular communication process is d...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a D2D communication resource scheduling method and device, which solves the problem of unfair resource scheduling and reduces signaling overhead. The D2D communication resource scheduling method includes: determining the rate gain factor and the service quality factor of each D2D user group to be scheduled in any time slot included in the current scheduling period, and the rate gain factor is used to characterize the D2D user group The rate gain after multiplexing RB, the service quality factor is used to characterize the demand rate satisfaction of the D2D user group on the current time slot; for each D2D user group, determine the D2D user group according to the rate gain factor and the service quality factor Scheduling priority of user groups; according to the scheduling priority of each D2D user group, select the first N / n D2D user groups in order of priority from high to low, where N is the number of D2D user groups to be scheduled; The selected D2D user group allocates available RBs included in the current time slot.
Description
technical field [0001] The present invention relates to the field of mobile communication technologies, in particular to a D2D communication resource scheduling method and device. Background technique [0002] The D2D (Device-to-Device, device-to-device) communication technology is a technology that allows terminals to communicate directly by multiplexing cell resources under the control of an LTE (Long Term Evolution, long-term evolution) system. D2D communication technology is one of the foreground technologies of mobile cellular networks, which can be applied to mobile cellular networks to improve resource utilization and network capacity. In D2D communication, the communication data between adjacent mobile terminals does not need to be forwarded by the base station, but under the control of the base station, the spectrum resources of the cellular network are allowed to directly establish a local link communication, so as to reduce the load bottleneck of the relay forward...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & AuthorityPatents(China)
IPC IPC(8): H04W4/70H04W72/12
CPCH04W72/1263H04W72/569H04W72/20
Inventor滑维鑫周艳丽郭锐赖晓龙
Owner中国移动通信集团陕西有限公司