Method and system for increasing quantity of physical layer control channel resource in mobile communication

Abstract

The invention discloses a method and a system for increasing the quantity of a physical layer control channel resource in mobile communication. The method comprises the steps that a base station utilizes a Z-RNTI to map a PDCCH (Physical Downlink Control Channel) of a vUE to a control area of a subframe; an expansion control area is distributed in a data area of the subframe; and the PDCCH data of the vUE contains resource distribution information for indicating the expansion control area. In the expansion control area, the base station utilizes the Z-RNTI to map the PDCCH of the vUE once again, and newly points to a new PDSCH (Physical Downlink Control Channel) area as a new expansion control area, and the like, when the N time expansion is performed, a newly distributed expansion control area is ensured to be located in an idle PDSCH area during the N-1 time expansion. The invention can increase the resource distributed in the physical layer control channel, and reduces the probability of resource conflict.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and a system for expanding the quantity of physical layer control channel resources in mobile communication. Background technique [0002] The LTE (Long Term Evolution) project is an evolution of 3G, which improves and enhances the air access technology of 3G. Using OFDM (Orthogonal Frequency Division Multiplexing) and MIMO (Multiple-Input Multiple-Out-put) as the only standards for its wireless network evolution. Under the 20MHz spectrum bandwidth, it can provide the peak rate of downlink 100Mbit / s and uplink 50Mbit / s. It improves the performance of cell edge users, increases cell capacity, and reduces system delay. The LTE system described in the present invention includes its subsequent evolution version such as LTE-A. [0003] The OFDM used by LTE in the downlink direction is an efficient data transmission method. Its basic idea is to divide a given channel into multiple...

AI Technical Summary

Problems solved by technology

For example, if the new DCI is used to reduce the bearer bits, the information bits may need to be redefined for specific services, which will affect the operation of the service. At the same time, the terminal also needs to perform blind detection on the new DCI size; the introduction of empty The sub-technology may design a new demodulation reference signal and demodulation method for this new demodulation method, and solve the RRE (remote radio equipment) position occupied by PDCCH when a group of users occupy the same time / frequency resource A series of related mapping problems; using a differential method to reduce the size of the payload of each PDCCH requires that the channel and business between the UE and the eNB (evolved base station) remain unchanged for a certain period of time, and this is for In practice, it is difficult to realize, because the actual channel and the service state of the user are time-varying, so it will affect the flexibility of scheduling, and it will not be able to make the PDCCH adapt to the channel condition of the UE to the greatest extent.

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