Cross-carrier scheduling method and device
A cross-carrier scheduling and carrier technology, applied in the field of communication, can solve the problems of UT throughput and rate performance degradation of aggregated carriers, no technical support, etc.
Inactive Publication Date: 2011-11-09
ZTE CORP
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Problems solved by technology
However, the current carrier aggregation discussed in LTE-Advanced does not take into account the impact of inter-cell interference, which plays an important role in inter-cell user terminal (UT) throughput and user terminal (UT) average throughput. Inter-cell interference, even if a larger bandwidth is obtained, the throughput and rate performance of UTs using this part of the aggregated carrier will be severely degraded due to severe inter-cell interference, thus offsetting the benefits of carrier aggregation
[0004] In order to avoid the occurrence of the above problems, it is necessary to perform cross-carrier scheduling for UE, but there is no specific related technical support at present
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[0035] In general, the present invention relates to a wireless communication network. Carrier aggregation is a key technology for supporting larger bandwidth in future wireless communication systems. Different carriers are aggregated to form carriers with larger bandwidth. Since there are multiple different component carriers during carrier aggregation, that is, in order to meet the bandwidth requirement of the UE, the component carriers may span carriers. According to the propagation conditions (such as line-of-sight transmission, non-line-of-sight transmission, etc.) and performance requirements (such as interference status, rate, throughput, etc.) of different component carriers, the component carriers are divided into multiple control area configuration groups; and, the BS The resources of the common control area are reserved for different control area configuration groups, or the resources of the joint control area are set between the control area configuration groups acco...
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The invention discloses a cross-carrier scheduling method and a cross-carrier scheduling device. The method comprises the following steps of: dividing carrier resources by taking a control area configuration group as a unit, and allocating carrier resources in proper control area configuration groups to users for communication; and performing cross-carrier scheduling to the reserved resources of a public control area and / or a joint control area on the carrier resources allocated to the users when current communication quality is determined to be unfavorable for the communication of the users. By the cross-carrier scheduling method and the cross-carrier scheduling device provided by the invention, the cross-carrier scheduling for the users can be realized in a carrier aggregation environment.
Description
technical field [0001] The present invention relates to the communication field, in particular to a cross-carrier scheduling method and device. Background technique [0002] In the next-generation broadband wireless communication network, how to support a larger bandwidth in the wireless communication network under the bandwidth of the current wireless communication system becomes a key factor in improving the throughput of user terminals between cells and the average throughput of user terminals. Facing severe challenges. [0003] At present, in the Long Term Evolution (LTE) of the Third Generation Partnership Project, it is proposed to use carrier aggregation to effectively support a larger bandwidth in the current wireless communication system, so as to meet the new generation of wireless standards. The requirements for indicators such as throughput and peak rate. Carrier aggregation is a key technology to support larger bandwidth in future wireless communication system...
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Login to View More IPC IPC(8): H04W72/08H04W72/12
Inventor 魏巍
Owner ZTE CORP