Wireless resource scheduling method and wireless resource scheduling system
A wireless resource scheduling and resource technology, applied in the field of wireless resource scheduling methods and systems, can solve the problems of tens of kilobits to several megabits, insufficient data transmission, large overhead of control channel PDCCH, etc., to improve utilization rate, save the number of transmissions, and reduce the effect of control channel overhead
Inactive Publication Date: 2014-03-19
沈阳市联盛科技有限公司
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Problems solved by technology
For example, when users use MSN, Tencent QQ and other instant messaging tools, they need to stay online all the time, and the amount of information that needs to be transmitted occasionally is generally on the order of tens of kilobits to several megabits, and its data arrival time characteristics do not meet the requirements of semi-persistent scheduling. requirements, only dynamic scheduling can be used
However, the resources allocated by one PDCCH dynamic scheduling instruction are not enough to transmit all data, because currently one PDCCH dynamic scheduling can only allocate one TTI physical downlink shared channel (PDSCH) resource or one TTI physical uplink shared channel (PUSCH) resource, Multiple PDCCHs are often required to complete the transmission of all data
The problem with such multiple dynamic scheduling is that the control channel PDCCH has a large overhead, which is not conducive to the rational use of wireless resources.
[0008] It can be seen that for always-on services, the existing dynamic scheduling methods and semi-persistent scheduling methods cannot achieve efficient use of wireless resources
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[0026] exist figure 1 In the situation shown, the base station already knows in advance that it takes 4 subframes to complete sending the data to be transmitted, but 4 PDCCH schedulings are still required. In this case, if the base station is allowed to allocate all shared channel resources (PDSCH or PUSCH) of 4 subframes to the UE on the PDCCH of subframe 0, the latter 3 PDCCHs can be saved, and the control channel overhead can be greatly reduced. save.
[0027] Based on the above considerations, the present invention proposes a new wireless resource scheduling method based on the existing dynamic scheduling and semi-persistent scheduling methods, which is called a multi-subframe scheduling method. The basic idea of this method is to allow the base station to The PDCCH channel allocates physical downlink shared channel (PDSCH) or physical uplink shared channel (PUSCH) resources on a limited number of subframes to save the number of times the control channel PDCCH is sent, ...
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The invention discloses a wireless resource scheduling method and a wireless resource scheduling system. The wireless resource scheduling method comprises the following steps: a base station distributes N subframes for a user equipment UE according to the volume of downlink / uplink data to be transmitted; N is a natural number larger than 1; the base station sends a subframe interval parameter S to the UE; the base station sends the number N of subframes distributed for the UE to the UE through a physical downlink control channel PDCCH; the UE determines the corresponding N subframes according to the number N of subframes and the subframe interval parameter S and transmits the downlink / uplink data on a physical downlink shared channel PDSCH resource / physical uplink shared channel PUSCH resource for the determined N subframes. The technical scheme of the invention can effectively improve the utilization factor of the wireless resources.
Description
technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a wireless resource scheduling method and system. Background technique [0002] In the existing Long Term Evolution (LTE) system, two wireless resource scheduling methods are provided, namely, a dynamic scheduling method and a semi-persistent scheduling method. [0003] Dynamic scheduling mode: The base station (eNode B) allocates corresponding wireless resources to UEs in real time according to the uplink and downlink traffic volume, and each scheduling behavior only allocates wireless resources used within the Transmission Time Interval (TTI, Transmission Time Interval) for UEs. If the resources scheduled in one TTI cannot accommodate all the cached data, more resources need to be continuously scheduled in subsequent TTIs until all the cached data is correctly transmitted. The advantage of this method is that resource allocation is flexible, but the disadv...
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IPC IPC(8): H04W72/12
Inventor 常永宏商志平
Owner 沈阳市联盛科技有限公司