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

Abstract

The invention discloses a method and a system for increasing the quantity of a physical layer control channel resource. The method comprises the following steps: 1) a Z-RNTI distributes a vUE to a RNTI, an eUE is provided with the Z-RNTI; 2) a base station dispatches the idle resource of a subframe to an expansion control area, and maps a PDCCH (Physical Downlink Control Channel) of the eUE to the expansion control area; 3) the base station maps the PDCCHs of a tUE and a vUE to the control area of the subframe; 4) the base station uses the Z-RNTI to transmit the PDCCH data of the vUE including resource allocation information, and uses a C-RNTI to transmit the PDCCH of the eUE; and 5) the eUE decodes the PDCCH data of the vUE according to the Z-RNTI, and detects the PDCCH in a search space of the expansion control area. The invention can increase the resource distributed to the physical layer control channel, and reduces the probability of resource conflicts.

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. 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 orthogonal sub-channels...

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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