Resource distribution method of transmission time interval (TTI) Bundling in long term evolution (LTE) system

Abstract

The invention discloses a resource distribution method of transmission time interval (TTI) Bundling in a long term evolution (LTE) system. The method comprises the following steps: 1, obtaining cell bandwidth and related configuration information of a physical uplink control channel (PUCCH) and a physical random access channel (PRACH) in cell configuration or reconfiguration; 2, calculating physical resource positions of the PUCCH and the PRACH according to the configuration information; 3, determining the maximal resource block (RB) quantity capable of being occupied by a message (MSG)3 according to the cell bandwidth; 4, working out the resource distribution ranges of the MSG3 and a TTI Bundling user in the scheduling process; 5, carrying out RB distribution of the MSG3 and the TTI Bundling user according to the result in the step 4 in the scheduling. By adopting the resource distribution method, uplink physical resources are divided from a frequency band by limiting respective resource distribution range, so that the resource distribution conflict caused by respective occupied time inconsistence in resource distribution is solved, and meanwhile, the resource distribution process in the scheduling process is simplified.

Description

Technical field [0001] The present invention relates to the field of mobile communications, and in particular to a physical resource allocation method for ensuring TTI bundling (uplink subframe bundling) in an LTE (Long Term Evolution) system. Background technique [0002] In the LTE system, when a user is at the edge of a cell, the uplink transmission power of the user is limited to a limit due to poor channel quality, which makes the uplink rate of the user at the cell edge very low. In order to solve this problem, the LTE system adopts a method of bundling TTI bundling of uplink subframes to assign 4 consecutive TTIs (Transmission Time Interval, transmission time interval, in the LTE system, one TTI is 1 millisecond) to the edge users. Resource, let the user send the same uplink data with different redundancy versions (versions 0, 2, 3, 1) in 4 consecutive TTIs, and the base station uses different redundancy versions when demodulating the data The combined decoding gains the ...

AI Technical Summary

Problems solved by technology

[0002] In the LTE system, when the user is at the edge of the cell, due to the poor channel quality, the user's uplink transmission power is limited to the limit, so that the user's uplink rate at the cell edge is very low

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