A method for PDCCH authorization confirmation with semi-persistent scheduling identifier scrambling

Abstract

The invention discloses a method for confirming physical downlink control channel (PDCCH) authorization of semi-static scheduling identifier scrambling. The method comprises the following steps: A, a base station confirms that a new service applicable to semi-static scheduling or a semi-static scheduling reconfiguration service arrives, carries out resource allocation for the service and sends PDCCH authorization of semi-static scheduling identifier scrambling of a user to which the service belongs after resource allocation is carried out successfully; and B, the base station judges whether initial transmission data corresponding to the PDCCH authorization obtains feedback configuration, the base station uses the same resource location and the same modulation coding mode as initial transmission to carry out data transmission and ends the process at the moment when a semi-static scheduling period arrives if the initial transmission data corresponding to the PDCCH authorization obtains feedback configuration, or the base station uses initially-distributed resources to send the PDCCH authorization, the same with the initial authorization, of semi-static scheduling identifier scrambling and returns to step B when subsequent next semi-static scheduling periodic data arrives. The method can ensure normal communication of services using semi-static scheduling and effectively avoid the waste of system resources.

Description

technical field [0001] The present application relates to the technical field of mobile communication, and in particular to a method for PDCCH grant confirmation with semi-persistent scheduling identifier scrambling. Background technique [0002] With the rapid development of mobile communication, the radio resources of the air interface have become one of the main bottlenecks in the further development of mobile communication systems. On the one hand, the research on physical layer technology, such as efficient coding technology, modulation technology, diversity technology, etc., is crucial to the improvement of system capacity; on the other hand, how to reasonably schedule, configure and manage wireless resources is of great importance to It is also very important to maximize system capacity and meet system requirements as much as possible. [0003] The dynamic shared resource scheduling mode adopted in the LTE system greatly optimizes the allocation of system resources. ...

AI Technical Summary

Problems solved by technology

[0011] The protocol does not protect against the loss of SPS C-RNTI scrambled PDCCH authorization after transmission. If data packets are lost on the air interface or the UE cannot correctly decode the PDCCH authorization, the base station will send SPS C-RNTI scrambled After the PDCCH is granted, at the periodic data arrival time of the downlink service, the adaptive retransmission time of the uplink service, and the periodic data arrival time, the resource location and modulation and coding method allocated for the initial transmission are used for transmission, but the UE will not When receiving or sending on the corresponding resources at the corresponding time, these resources will be wasted, and there is no way to guarantee the business that is suitable for SPS scheduling

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