Patent ID: 9642151
Date: 2017-05-02
CPC Classifications: H04W

Claim:
1. A radio resource adaptation method using a first and a second communication link for two-way communications between a first communication device and a second communication device utilizing Frequency Division Duplex (FDD) or Time Division Duplex (TDD) operating with a fixed bandwidth or fixed time slot for the two-way communication, wherein a fixed first portion of the fixed bandwidth or the fixed time slot is allocated for the first communication link and wherein a fixed second portion of the fixed bandwidth or the fixed time slot is allocated for the second communication link, comprising: receiving, by the first communication device, fed-back information in an unused part of radio resource allocated to the second communication link from the second communication device to the first communication device, the fed-back information enabling utilization efficiency enhancement of radio resource allocated to the first communication link from the first communication device to the second communication device, wherein the fed-back information includes at least one of: detection candidate sequences calculated from a signal received by the second communication device from the first communication device for data recovery, in a case where a payload data error occurs during transmission of the signal: at least one of signal measurements and link quality measured at the second communication device; and inter-cell interference information detected at the second communication device, in a case where the first communication device is a base station and the second communication device is a user equipment; and performing, by the first communication device, resource-efficient information transmission or retransmission on the radio resource of the first communication link, based on the fed-back information, by performing at least one of: transmitting data with an adjustable target error rate, which is adjusted according to amount of the unused part of the radio resource of the second communication link; retransmitting a part of the signal whose previous transmission has a signal measurement lower than other parts of the signal; retransmitting the signal and performing adaptive power allocations for parts of the retransmitted signal; and retransmitting the signal with a reduced transmission power, if a mean of the signal measurements is above a threshold.